FIRSTAR CORP /NEW/
S-3, 1999-06-04
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<PAGE>   1

      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 4, 1999
                                                      REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ----------------------

                                    FORM S-3
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                              FIRSTAR CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

<TABLE>
<S>                                                   <C>
                      WISCONSIN                                            39-1940778
  (STATE OR OTHER JURISDICTION OF INCORPORATION OR            (I.R.S. EMPLOYER IDENTIFICATION NO.)
                    ORGANIZATION)
</TABLE>

                             ----------------------

                              FIRSTAR CORPORATION
                           777 EAST WISCONSIN AVENUE
                           MILWAUKEE, WISCONSIN 53202
                                 (414) 765-4321
         (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING
            AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                             ----------------------

                            JENNIE P. CARLSON, ESQ.
             SENIOR VICE PRESIDENT, GENERAL COUNSEL, AND SECRETARY
                              FIRSTAR CORPORATION
                           777 EAST WISCONSIN AVENUE
                           MILWAUKEE, WISCONSIN 53202
                                 (414) 765-4321
           (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
                   INCLUDING AREA CODE, OF AGENT FOR SERVICE)

                             ----------------------

                                   COPIES TO:

<TABLE>
<S>                                                   <C>
              CRAIG M. WASSERMAN, ESQ.                                 LEE MEYERSON, ESQ.
           WACHTELL, LIPTON, ROSEN & KATZ                          SIMPSON THACHER & BARTLETT
                 51 WEST 52ND STREET                                  425 LEXINGTON AVENUE
                 NEW YORK, NY 10019                                 NEW YORK, NEW YORK 10017
                   (212) 403-1000                                        (212) 455-2000
</TABLE>

                             ----------------------

    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: From time
to time after the Effective Date of this Registration Statement.

    If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  [ ]

    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, please check the following box.  [X]

    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [ ]

    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]

    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [ ]
                             ----------------------

                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
                                                             PROPOSED MAXIMUM          PROPOSED MAXIMUM
  TITLE OF EACH CLASS OF SECURITIES      AMOUNT BEING       AGGREGATE OFFERING        AGGREGATE OFFERING           AMOUNT OF
       BEING REGISTERED(1)(2)             REGISTERED          PRICE PER UNIT                PRICE              REGISTRATION FEE
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                 <C>                    <C>                          <C>
Debt securities, preferred stock, par
  value $1.00 per share, depositary
  shares, common stock, par value
  $0.01 per share(3), and securities
  warrants...........................         --                    --             $1,000,000,000(4)(5)(6)         $278,000
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) Any securities registered hereunder may be sold separately or as units with
    other securities registered hereunder.
(2) Includes such indeterminate number of debt securities, preferred stock and
    common stock as may be issued upon exercise of securities warrants or in
    exchange for, or upon conversion of, securities registered hereunder.
(3) Attached to the common stock are preferred share purchase rights that will
    not be exercisable or evidenced separately from the common stock prior to
    the occurrence of certain events.
(4) Or the equivalent thereof in one or more foreign currencies or composite
    currencies, including Euros.
(5) No separate consideration will be received for common stock, preferred stock
    or depositary shares that are issued upon conversion of debt securities,
    preferred stock or depositary shares.
(6) Calculated pursuant to Rule 457(o) under the Securities Act.
                             ----------------------

    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THIS REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION,
ACTING PURSUANT TO SAID SECTION 8(a), MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2

     THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE
     MAY NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH
     THE SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT
     AN OFFER TO SELL THESE SECURITIES AND IT IS NOT SOLICITING AN OFFER TO BUY
     THESE SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.

                       PRELIMINARY PROSPECTUS SUPPLEMENT
                    (TO PROSPECTUS DATED             , 1999)
                  (SUBJECT TO COMPLETION, DATED JUNE 4, 1999)

                                  $500,000,000

FIRSTAR CORPORATION
                                                                  [FIRSTAR LOGO]

                          MEDIUM-TERM NOTES, SERIES A
                   DUE NINE MONTHS OR MORE FROM DATE OF ISSUE

    We plan to offer and sell notes with various terms, including the following:

- - Ranking as our senior or subordinated indebtedness

- - Stated maturities of 9 months or more from date of issue

- - Redemption and/or repayment provisions, if applicable, whether mandatory or at
  the option of us or the holders of notes

- - Payments in U.S. dollars or one or more foreign currencies

- - Minimum denominations of $1,000 or other specified denominations for foreign
  currencies

- - Book-entry or certificated form
- - Interest at fixed or floating rates, or no interest at all. The floating
  interest rate may be based on one or more of the following indices plus or
  minus a spread and/or multiplied by a spread multiplier:

    - CD rate

    - CMT rate

    - commercial paper rate

    - eleventh district cost of funds rate
    - federal funds rate

    - LIBOR

    - prime rate

    - treasury rate

We will specify the financial terms for each note, which may be different from
the terms described in this prospectus supplement, in the applicable pricing
supplement.

     INVESTING IN NOTES INVOLVES INDEX AND CURRENCY RISKS.  SEE "RISK FACTORS"
ON PAGE S-3.

<TABLE>
<CAPTION>
                                                         PRICE TO                  AGENTS'                 PROCEEDS
                                                         PUBLIC(1)              COMMISSION(1)           TO FIRSTAR (1)
                                                  -----------------------  -----------------------  -----------------------
<S>                                               <C>                      <C>                      <C>
Per note........................................
Total(1)........................................
</TABLE>

- ---------------
(1) Or the equivalent thereof in one or more foreign or composite currencies.

    We may sell notes to the agents referred to below as principal for resale at
varying or fixed offering prices or through the agents using their reasonable
efforts on our behalf. If we sell other securities referred to in the
accompanying prospectus, the aggregate initial offering price of the Notes that
we may offer and sell under this prospectus supplement is subject to reduction.

    Our common stock is listed on the New York Stock Exchange, Inc. (ticker
symbol "FSR"). The address of our principal executive offices is 777 East
Wisconsin Avenue, Milwaukee, Wisconsin, 53202 and our telephone number is (414)
765-4518.

MERRILL LYNCH & CO.
        DONALDSON, LUFKIN & JENRETTE
                  CS FIRST BOSTON
                           BA SECURITIES
                                   GOLDMAN, SACHS & CO.
                                         MORGAN STANLEY & CO.
                                               SALOMON SMITH BARNEY
                                                     LEHMAN BROTHERS INC.
                                                            BEAR STEARNS

          THE DATE OF THIS PROSPECTUS SUPPLEMENT IS           , 1999.
<PAGE>   3

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
PROSPECTUS SUPPLEMENT
About This Prospectus Supplement; Pricing Supplements.......  S-3
Risk Factors................................................  S-3
Description of Notes........................................  S-5
Certain United States Federal Income Tax Consequences.......  S-23
Plan of Distribution........................................  S-31

PROSPECTUS
Firstar.....................................................  2
Where You Can Find More Information.........................  2
Use of Proceeds.............................................  4
Ratios of Earnings to Fixed Charges and to Combined Fixed
  Charges and Preferred Stock Dividends.....................  4
Certain Regulatory Matters..................................  5
Description of Debt Securities..............................  10
Description of Preferred Shares.............................  23
Description of Depositary Shares............................  28
Description of Common Stock.................................  31
Description of Securities Warrants..........................  32
European Monetary Union.....................................  36
Plan of Distribution........................................  37
Validity of Securities......................................  37
Experts.....................................................  37
Forward-Looking Statements..................................  38
</TABLE>

                                       S-2
<PAGE>   4

             ABOUT THIS PROSPECTUS SUPPLEMENT; PRICING SUPPLEMENTS

     We may use this prospectus supplement, together with the attached
prospectus and an attached pricing supplement, to offer our medium-term-notes,
Series A (the "NOTES") from time to time.

     This prospectus supplement sets forth certain terms of the notes that we
may offer. It supplements the description of the debt securities contained in
the attached prospectus. If information in this prospectus supplement is
inconsistent with the prospectus, this prospectus supplement will apply and will
supersede that information in the prospectus.

     Each time we issue notes, we will attach a pricing supplement to this
prospectus supplement. The pricing supplement will contain the specific
description of the notes we are offering and the terms of the offering. The
pricing supplement may also add, update or change information in this prospectus
supplement or the attached prospectus. Any information in the pricing
supplement, including any changes in the method of calculating interest on any
note, that is inconsistent with this prospectus supplement will apply and will
supersede that information in this prospectus supplement.

     It is important for you to read and consider all information contained in
this prospectus supplement and the attached prospectus and pricing supplement in
making your investment decision. You should also read and consider the
information in the documents we have referred you to in "Where You Can Find More
Information" on page   of the attached prospectus.

                                  RISK FACTORS

CURRENCY RISKS

Exchange Rates and Exchange Controls

     Your investment in a note having a specified currency other than U.S.
dollars entails significant risks that are not associated with a similar
investment in a security denominated in U.S. dollars. Those risks include the
possibility of significant changes in rates of exchange between the U.S. dollar
and that specified currency and the possibility of the imposition or
modification of foreign exchange controls with respect to that specified
currency. Those risks generally depend on factors over which we have no control
and which cannot be readily foreseen, such as economic and political events and
the supply of and demand for the relevant currencies. In recent years, rates of
exchange between the U.S. dollar and certain currencies have been highly
volatile, and that volatility may be expected in the future. Fluctuations in any
particular exchange rate that have occurred in the past are not necessarily
indicative, however, of fluctuations in the rate that may occur during the term
of any note. Depreciation of the specified currency for a note against the U.S.
dollar would result in a decrease in the effective yield of that note below its
coupon rate and, in certain circumstances, could result in a substantial loss to
the investor on a U.S. dollar basis.

     Governments have in the past imposed, and may in the future impose,
exchange controls that could affect exchange rates as well as the availability
of a specified currency for making payments in respect of notes denominated in
that currency. At present, we have identified the following currencies in which
payments of principal, premium and interest on notes may be made: Australian
dollars, Canadian dollars, Danish kroner, English pounds sterling, French
francs, German deutsche marks, Italian lire, Japanese yen, New Zealand dollars,
U.S. dollars and Euros. However, we may determine at any time to issue notes
with specified currencies other than those listed. Exchange controls will not
restrict or prohibit payments of principal, premium or interest in any specified
currency. Even if there are no actual exchange controls, it is possible that, on
a payment date, the currency in which amounts then due would not be available to
us. In that event, we will make such payments in the manner set forth under
"Description of Notes -- Payment of Principal and Interest" above.

     This prospectus supplement and the accompanying prospectus do not describe
all the risks of an investment in notes denominated in a currency other than
U.S. dollars, and we disclaim any responsibility

                                       S-3
<PAGE>   5

to advise prospective purchasers of those risks as they exist at the date of
this prospectus supplement or as such risks may change from time to time. You
should consult your own financial and legal advisors as to the risks entailed by
an investment in notes denominated in a currency other than U.S. dollars. Such
notes are not an appropriate investment for persons who are unsophisticated with
respect to foreign currency transactions.

     The information set forth in this prospectus supplement is directed to
prospective purchasers of notes who are U.S. residents, and we disclaim any
responsibility to advise prospective purchasers who are residents of countries
other than the U.S. with respect to any matters that may affect the purchase or
holding of, or receipt of payments of principal, premium or interest in respect
of, notes. Those persons should consult their own advisors with regard to such
matters.

     Any pricing supplement relating to notes having a specified currency other
than U.S. dollars will contain a description of any material exchange controls
affecting such currency and any other required information concerning such
currency.

Payment Currency

     Except as set forth below, if payment in respect of a note is required to
be made in a specified currency other than U.S. dollars and that currency is
unavailable due to the imposition of exchange controls or other circumstances
beyond our control or is no longer used by the government of the country issuing
that currency or for the settlement of transactions by public institutions of or
within the international banking community, then all payments in respect of that
note shall be made in U.S. dollars until that currency is again available or so
used. The amounts so payable on any date in that currency shall be converted
into U.S. dollars on the basis of the most recently available market exchange
rate for that currency or as otherwise indicated in the applicable pricing
supplement. Any payment in respect of that note made under such circumstances in
U.S. dollars will not constitute an Event of Default (as defined in the
Indenture) under the Indenture under which such note shall have been issued.

     All determinations referred to above made by the Trustee or the exchange
rate agent, as the case may be, will be at its sole discretion and will, in the
absence of manifest error, be conclusive for all purposes and binding on holders
of notes.

Foreign Currency Judgments

     The notes will be governed by and construed in accordance with the laws of
the State of New York. Courts in the United States customarily have not rendered
judgments for money damages denominated in any currency other than the U.S.
dollar. A 1987 amendment to the Judiciary Law of the State of New York provides,
however, that an action based upon an obligation denominated in a currency other
than U.S. dollars will be rendered in the foreign currency of the underlying
obligation and converted into U.S. dollars at the rate of exchange prevailing on
the date of the entry of the judgment or decree.

RISKS OF INDEXED NOTES

     An investment in indexed notes may entail significant risks that are not
associated with a similar investment in a debt instrument that has a fixed
principal amount, is denominated in U.S. dollars and bears interest at either a
fixed rate or a floating rate determined by reference to nationally published
interest rate references. The risks of a particular indexed note will depend on
its terms, but may include, among other risks, the possibility of significant
changes in the prices of securities, currencies, intangibles, goods, articles or
commodities or of other objective price, economic or other measures making up
the relevant index. Those risks generally depend on factors over which we have
no control and which cannot readily be foreseen, such as economic and political
events and the supply of and demand on which indices are based. In recent years,
currency exchange rates and prices for various assets on which indices are based
have been highly volatile, and such volatility may be expected in the future.
Fluctuations in any such rates or prices that have occurred in the past are not
necessarily indicative, however, of fluctuations that may occur during the term
of any indexed note.
                                       S-4
<PAGE>   6

     In considering whether to purchase indexed notes, you should be aware that
the calculation of amounts payable in respect of indexed notes may involve
reference to an index determined by an affiliate of ours or to prices which are
published solely by third parties or entities which are not subject to
regulation under the laws of the United States. The risk of loss as a result of
the linkage of principal or interest payments on indexed notes to an index and
to the assets on which indices are based can be substantial. Prospective
purchasers should consult their own financial and legal advisors as to the risks
entailed by an investment in indexed notes.

UNCERTAIN TRADING MARKETS

     We cannot assure you a trading market for your notes will ever develop or
be maintained. Many factors independent of our creditworthiness affect the
trading market. These factors include:

     - the complexity and volatility of the index or formula applicable to
       notes,

     - the method of calculating the principal, premium and interest in respect
       of the notes,

     - the time remaining to the maturity of the notes,

     - the outstanding amount of the notes,

     - the redemption features of the notes,

     - the amount of other debt securities linked to the index or formula
       applicable to the notes, and

     - the level, direction and volatility of market interest rates generally.

     In addition, certain notes have a more limited trading market and
experience more price volatility because they were designed for specific
investment objectives or strategies. There may be a limited number of buyers
when you decide to sell such notes. This may affect the price you receive for
such notes or your ability to sell such notes at all. You should not purchase
notes unless you understand and know you can bear these investment risks.

                              DESCRIPTION OF NOTES

     We have summarized certain terms of the notes, below. The summary below
supplements, and to the extent inconsistent therewith replaces, the description
of the general terms and provisions of the debt securities described in the
prospectus that we refer to in this document.

GENERAL

     We will issue the notes under a senior debt indenture dated
(the "INDENTURE"), with                , as Trustee. At the date of this
prospectus supplement, the notes to be offered pursuant to this prospectus
supplement are limited to an aggregate initial public offering price or purchase
price of up to $500,000,000 or the equivalent of that amount in one or more
foreign or composite currencies, which amount is subject to reduction as a
result of the sale of other securities under the registration statement of which
this prospectus supplement and the accompanying prospectus form a part. We may
increase the aggregate amount of notes in the future. The U.S. dollar equivalent
of the public offering price or purchase price of a note denominated in one or
more foreign currencies or currency units (each a "SPECIFIED CURRENCY") will be
determined on the basis of the noon buying rate in New York City for cable
transfers in foreign currencies as certified for customs purposes by the Federal
Reserve Bank of New York (the "MARKET EXCHANGE RATE") for that specified
currency on the applicable issue date. That determination will be made by us or
            , as exchange rate agent (the "EXCHANGE RATE AGENT"). The notes will
be unsecured, will constitute part of our senior indebtedness and will rank on
an equal basis with all our other senior unsecured debt.

     The notes will be offered on a continuous basis. Each note will be issued
initially as either a book-entry note (a "BOOK-ENTRY NOTE") or, if specified in
the applicable pricing supplement, a certificated note.

                                       S-5
<PAGE>   7

Except as described in the prospectus under "Description of Debt Securities --
Temporary Global Securities," book-entry notes will not be issuable as
certificated notes. See "Book-Entry System" below.

     Unless otherwise specified in the applicable pricing supplement, the
authorized denominations of notes denominated in U.S. dollars will be $1,000 and
any larger amount that is an integral multiple of $1,000, and the authorized
denominations of notes having a specified currency other than U.S. dollars will
be the approximate equivalents of the U.S dollar amount in the specified
currency.

     Unless otherwise specified in the applicable pricing supplement, each note
will mature on a Business Day nine months or more from its date of issue, as
selected by the purchaser of the note and agreed to by us. We may, at our
option, extend the maturity date of the notes. Each note may also be subject to
redemption at our option, or repayment at the option of the holder, prior to the
stated maturity date of the note. Each floating rate note will mature on an
interest payment date for that note.

     The pricing supplement relating to a note will describe the following
terms:

     - the specified currency for that note;

     - whether that note bears interest at a fixed rate, a floating rate or is
       an amortizing note and/or an indexed note;

     - the price (expressed as a percentage of the aggregate principal amount or
       face amount of the note) at which that note will be issued;

     - the date on which that note will be issued (the "ORIGINAL ISSUE DATE");

     - the date of stated maturity of the note;

     - if that note bears interest at a fixed rate, the rate per annum at which
       that note will bear interest, if any, and whether and the manner in which
       that rate may be changed prior to its date of stated maturity;

     - if that note bears interest at a floating rate, the base rate, the
       initial interest rate, the interest reset period or the interest reset
       dates, the interest payment dates, and, if applicable, the index
       maturity, the maximum interest rate, the minimum interest rate, the
       spread or spread multiplier, and any other terms relating to the
       particular method of calculating the interest rate for that note and
       whether and the manner in which the spread or spread multiplier may be
       changed prior to its date of stated maturity;

     - whether that note is an original issue discount note;

     - if that note is an amortizing note, the terms for repayment prior to its
       stated maturity date;

     - if that note is an indexed interest rate note, the manner in which the
       amount of any interest payment will be determined;

     - if that note is an indexed principal note, its face amount and the manner
       in which the principal amount payable at the stated maturity date of the
       note will be determined;

     - whether that note may be redeemed at our option, or repaid at the option
       of the holder, prior to the stated maturity date as described under
       "-- Optional Redemption, Repayment and Repurchase" below and, if so, the
       provisions relating to that redemption or repayment, including, in the
       case of an original issue discount note or indexed note, the information
       necessary to determine the amount due upon redemption or repayment;

     - whether that note is subject to an optional extension beyond its stated
       maturity date as described under "-- Extension of Maturity" below; and

     - any other terms of that note not inconsistent with the provisions of the
       indenture under which that note will be issued.

                                       S-6
<PAGE>   8

     We may use the term "BUSINESS DAY" to mean any day, other than a Saturday
or Sunday, that is neither a legal holiday nor a day on which commercial banks
are authorized or required by law, regulation or executive order to close in The
City of New York; provided, however, that, with respect to foreign currency
notes, a "Business Day" does not include a day on which commercial banks are
authorized or required by law, regulation or executive order to close in the
principal financial center of the country issuing the specified currency (or, if
the specified currency is Euro, that day is also a day on which the
Trans-European Automated Real-Time Gross Settlement Express Transfer (TARGET)
System is open); provided, further, that, with respect to notes as to which
LIBOR is an applicable interest rate basis, that day is also a London Business
Day. "LONDON BUSINESS DAY" means a day on which commercial banks are open for
business (including dealings in the Designated LIBOR Currency) in London.

     We may use the term "PRINCIPAL FINANCIAL CENTER" to mean (a) the capital
city of the country issuing the specified currency, or (b) the capital city of
the country to which the Designated LIBOR Currency relates, as applicable,
except, in the case of (a) or (b) above, that with respect to U.S. dollars,
Australian dollars, Canadian dollars, Deutsche marks, Dutch guilders, Portuguese
escudos, South African rand and Swiss francs, the "principal financial center"
shall be the City of New York, Sydney and (solely in the case of the specified
currency) Melbourne, Toronto, Frankfurt, Amsterdam, London (solely in the case
of the Designated LIBOR Currency), Johannesburg and Zurich, respectively.

     A "basis point" or "bp" equals one one-hundredth of a percentage point.

PAYMENT OF PRINCIPAL AND INTEREST

     The principal of and any premium and interest on each note are payable by
us in the specified currency for that note. If the specified currency for a note
is other than U.S. dollars, we will (unless otherwise specified in the
applicable pricing supplement) arrange to convert all payments in respect of
that note into U.S. dollars in the manner described in the following paragraph.
The holder of a note having a specified currency other than U.S. dollars may (if
the applicable pricing supplement and that note so indicate) elect to receive
all payments in respect of that note in the specified currency by delivery of a
written notice to the Trustee for that note not later than fifteen calendar days
prior to the applicable payment date, except under the circumstances described
under "Risk Factors -- Currency Risks -- Payment Currency" below. That election
will remain in effect until revoked by written notice to such Trustee received
not later than fifteen calendar days prior to the applicable payment date.

     In the case of a note having a specified currency other than U.S. dollars,
the amount of any U.S. dollar payment in respect of that note will be determined
by the exchange rate agent based on the highest firm bid quotation expressed in
U.S. dollars received by the exchange rate agent at approximately 11:00 a.m.,
New York City time, on the second Business Day preceding the applicable payment
date (or, if no such rate is quoted on that date, the last date on which such
rate was quoted), from three (or, if three are not available, then two)
recognized foreign exchange dealers in The City of New York (one of which may be
one of our Agents (as defined herein) and another of which may be the exchange
rate agent) selected by the exchange rate agent, for the purchase by the quoting
dealer, for settlement on that payment date, of the aggregate amount of that
specified currency payable on that payment date in respect of all notes
denominated in that specified currency. All currency exchange costs will be
borne by the holders of those notes by deductions from those payments. If no
such bid quotations are available, those payments will be made in that specified
currency, unless that specified currency is unavailable due to the imposition of
exchange controls or to other circumstances beyond our control, in which case
those payments will be made as described under "Risk Factors -- Currency
Risks -- Payment Currency" below.

     Unless otherwise specified in the applicable pricing supplement, U.S.
dollar payments of interest on notes (other than interest payable at the stated
maturity date) will be made, except as provided below, by check mailed to the
registered holders of those notes (which, in the case of global securities
representing notes issued in book-entry form, will be a nominee of the
Depositary); provided, however, that, in the case of a note issued between a
regular record date and the related interest payment date, unless otherwise
specified in the related pricing supplement, interest for the period beginning
on the original issue date for

                                       S-7
<PAGE>   9

that note and ending on such interest payment date shall be paid on the next
succeeding interest payment date to the registered holder of that note on the
related regular record date. A holder of $10,000,000 (or the equivalent of
$10,000,000 in a currency other than U.S. dollars) or more in aggregate
principal amount of notes of like tenor and term shall be entitled to receive
such U.S. dollar payments by wire transfer of immediately available funds, but
only if appropriate wire transfer instructions have been received in writing by
the Trustee not later than fifteen calendar days prior to the applicable
interest payment date. Simultaneously with the election by any holder to receive
payments in a currency other than U.S. dollars (as provided above), such holder
shall provide appropriate wire transfer instructions to the Trustee. Unless
otherwise specified in the applicable pricing supplement, we will pay principal
and any premium and interest payable at the stated maturity date nine months or
more from the date of issue of a note in immediately available funds upon
surrender of such note at the corporate trust office or agency of the Trustee in
The City of New York.

     Unless otherwise specified in the applicable pricing supplement, if the
principal of any note issued at a discount is declared to be due and payable
immediately, the amount of principal due and payable with respect to that note
will be limited to the aggregate principal amount (or face amount, in the case
of an indexed principal note) of that note multiplied by the sum of its issue
price (expressed as a percentage of the aggregate principal amount) plus the
original issue discount amortized from the date of issue to the date of
declaration. This amortization will be calculated using the "interest method"
(computed in accordance with generally accepted accounting principles in effect
on the date of declaration).

     The regular record date with respect to any payment date for interest
(which will generally be semi-annual for fixed rate notes on each March 1 and
September 1 (each an "INTEREST PAYMENT DATE")) for a floating rate note or for
an indexed rate note shall be the date (whether or not a Business Day) fifteen
calendar days immediately preceding that interest payment date, and for a fixed
rate note (unless otherwise specified in the applicable pricing supplement) will
be the March 15 or September 15 (whether or not a Business Day) immediately
preceding that interest payment date.

     Interest rates offered by us with respect to the notes may differ depending
upon, among other factors, the aggregate principal amount of notes purchased in
any single transaction. Notes with different variable terms other than interest
rates may also be offered concurrently to different investors. Interest rates or
formulas and other terms of notes are subject to change by us from time to time,
but no such change will affect any note previously issued or as to which an
offer to purchase has been accepted by us.

FIXED RATE NOTES

     Each fixed rate note will bear interest from its original issue date, or
from the last interest payment date to which interest has been paid or duly
provided for, at the rate per annum stated in the applicable pricing supplement
until the principal amount of that note is paid or made available for payment,
except as described below under "-- Subsequent Interest Periods" and
"-- Extension of Maturity," and except that if so specified in the applicable
pricing supplement, the rate of interest payable on certain fixed rate notes may
be subject to adjustment from time to time as described in such pricing
supplement. Unless otherwise set forth in the applicable pricing supplement, we
will pay interest on each fixed rate note semiannually in arrears on each
interest payment date. If an interest payment date with respect to any fixed
rate note would otherwise be a day that is not a Business Day, that interest
payment date will not be postponed; provided, however, that any payment required
to be made in respect of such note on a date (including the day of stated
maturity of the note) that is not a Business Day for such note need not be made
on that date, but may be made on the next succeeding Business Day with the same
force and effect as if made on that date, and no additional interest shall
accrue as a result of such delayed payment. Each payment of interest in respect
of an interest payment date shall include interest accrued through the day
before such interest payment date. Interest on fixed rate notes will be computed
on the basis of a 360-day year of twelve 30-day months.

                                       S-8
<PAGE>   10

FLOATING RATE NOTES

     Unless otherwise specified in the applicable pricing supplement, each
floating rate note will bear interest from its original issue date to the first
interest reset date (such period, the "INITIAL INTEREST PERIOD") for such note
at the initial interest rate set forth on the face of that note and in the
applicable pricing supplement. The interest rate on such note for each interest
reset period (and for the initial interest period if so specified in the
applicable pricing supplement) will be determined by reference to an interest
rate basis (the "BASE RATE"), plus or minus the spread, if any, or multiplied by
the spread multiplier, if any. The "SPREAD" is the number of basis points that
may be specified in the applicable pricing supplement as being applicable to
such note, and the "SPREAD MULTIPLIER" is the percentage that may be specified
in the applicable pricing supplement as being applicable to such note, except in
each case as described below under "-- Subsequent Interest Periods" and
"-- Extension of Maturity," and except that if so specified in the applicable
pricing supplement, the spread or spread multiplier on certain floating rate
notes may be subject to adjustment from time to time as described in such
pricing supplement.

     The applicable pricing supplement will designate one of the following base
rates as applicable to a floating rate note:

     - LIBOR (a "LIBOR NOTE");

     - the commercial paper rate (a "COMMERCIAL PAPER RATE NOTE");

     - the treasury rate (a "TREASURY RATE NOTE");

     - the prime rate (a "PRIME RATE NOTE");

     - CMT rate (a "CMT NOTE");

     - the federal funds rate (a "FEDERAL FUNDS RATE NOTE");

     - the CD rate (a "CD RATE NOTE");

     - the eleventh district cost of funds rate (an "ELEVENTH DISTRICT COST OF
       FUNDS RATE NOTE"); or

     - such other base rate as is set forth in such pricing supplement and in
       such note.

     The "INDEX MATURITY" for any floating rate note is the period of maturity
of the instrument or obligation from which the base rate is calculated.
"H.15(519)" means the publication entitled "Statistical Release H.15(519),
'Selected Interest Rates,' " or any successor publication, published by the
Board of Governors of the Federal Reserve System. "COMPOSITE QUOTATIONS" means
the daily statistical release entitled "Composite 3:30 p.m. Quotations for U.S.
Government Securities" published by the Federal Reserve Bank of New York. "H.15
DAILY UPDATE" means the daily update of H.15(519), available through the
world-wide-web site of the Board of Governors of the Federal Reserve System at
http://www.bog.frb.fed.us/releases/h15/update, or any successor site or
publication.

     As specified in the applicable pricing supplement, a floating rate note may
also have either or both of the following (in each case expressed as a rate per
annum on a simple interest basis): (a) a maximum limitation, or ceiling, on the
rate at which interest may accrue during any interest period ("MAXIMUM INTEREST
RATE"), and (b) a minimum limitation, or floor, on the rate at which interest
may accrue during any interest period ("MINIMUM INTEREST RATE"). In addition to
any maximum interest rate that may be applicable to any floating rate note, the
interest rate on a floating rate note will in no event be higher than the
maximum rate permitted by applicable law, as the same may be modified by U.S.
law of general application. The notes will be governed by the law of the State
of New York and, under such law as of the date of this prospectus supplement,
the maximum rate of interest under provisions of the penal law, with certain
exceptions, is 25% per annum on a simple interest basis. Such maximum rate of
interest only applies to obligations that are less than $2,500,000.

     Unless otherwise specified in the pricing supplement, the Trustee will be
the "CALCULATION AGENT." Upon request of the holder of any floating rate note,
the calculation agent will provide the interest rate then in effect and, if
determined, the interest rate will become effective as a result of a
determination on a
                                       S-9
<PAGE>   11

date (the "INTEREST RATE DETERMINATION DATE") for the next interest reset date
with respect to the floating rate note. Unless otherwise specified in the
applicable pricing supplement, the "CALCULATION DATE," if applicable, pertaining
to any interest determination date will be the earlier of (a) the tenth calendar
day after the interest determination date, or, if this day is not a Business
Day, the next succeeding Business Day, or (b) the Business Day immediately
preceding the applicable interest payment date or the stated maturity date, as
the case may be.

     The interest rate on each floating rate note will be reset daily, weekly,
monthly, quarterly, semiannually or annually (such period being the "INTEREST
RESET PERIOD" for such note, and the first day of each interest reset period
being an "INTEREST RESET DATE"), as specified in the applicable pricing
supplement. Unless otherwise specified in the applicable pricing supplement, the
interest reset dates will be, in the case of floating rate notes that reset
daily, each Business Day; in the case of floating rate notes (other than
treasury rate notes) that reset weekly, Wednesday of each week; in the case of
treasury rate notes that reset weekly, Tuesday of each week (except as provided
below under "-- Treasury Rate Notes"); in the case of floating rate notes that
reset monthly, the third Wednesday of each month; in the case of floating rate
notes that reset quarterly, the third Wednesday of March, June, September and
December of each year; in the case of floating rate notes that reset
semiannually, the third Wednesday of each of two months of each year specified
in the applicable pricing supplement; and, in the case of floating rate notes
that reset annually, the third Wednesday of one month of each year specified in
the applicable pricing supplement. If an interest reset date for any floating
rate note would otherwise be a day that is not a Business Day, that interest
reset date shall be postponed to the next succeeding Business Day, except that,
in the case of a LIBOR note, if that Business Day is in the next succeeding
calendar month, that interest reset date shall be the immediately preceding
Business Day.

     Unless otherwise specified in the applicable pricing supplement, the rate
of interest that goes into effect on any interest reset date shall be determined
on the interest determination date preceding that interest reset date, as
further described below. Unless otherwise specified in the applicable pricing
supplement the interest determination date pertaining to an interest reset date
for a CD rate note or any floating rate note for which the interest rate is
determined with reference to the CD rate (the "CD RATE INTEREST DETERMINATION
DATE"), for a commercial paper rate note or any floating rate note for which the
interest rate is determined with reference to the commercial paper rate (the
"COMMERCIAL PAPER RATE INTEREST DETERMINATION DATE"), for a federal funds rate
note or any floating rate note for which the interest rate is determined with
reference to the federal funds rate (the "FEDERAL FUNDS RATE INTEREST
DETERMINATION DATE"), or for a prime rate note or any floating rate note for
which the interest rate is determined with reference to the prime rate (the
"PRIME RATE INTEREST DETERMINATION DATE"), or for a CMT rate note or any
floating rate note for which the interest rate is determined with reference to
the CMT rate (the "CMT RATE INTEREST DETERMINATION DATE"), will be the second
Business Day preceding the interest reset date.

     The interest determination date pertaining to an interest reset date for a
LIBOR note or any floating rate note for which the interest rate is determined
with reference to LIBOR (the "LIBOR RATE INTEREST DETERMINATION DATE") will be
the second London Business Day immediately preceding the interest reset date
with respect to that note. The interest determination date pertaining to an
interest reset date for an eleventh district cost of funds rate note or any
floating rate note for which the interest rate is determined with reference to
the eleventh district cost of funds rate (the "ELEVENTH DISTRICT COST OF FUNDS
RATE INTEREST DETERMINATION DATE") will be the last working day of the month
immediately preceding the applicable interest reset date on which the Federal
Home Loan Bank of San Francisco publishes the Index (as defined below). The
interest determination date pertaining to an interest reset date for a treasury
rate note or any floating rate note for which the interest rate is determined
with reference to the treasury rate (the "TREASURY RATE INTEREST DETERMINATION
DATE") will be the day of the week on which Treasury bills would normally be
auctioned in the week in which such interest reset date falls. Treasury bills
are usually sold at auction on Monday of each week, unless that day is a legal
holiday, in which case the auction is usually held on the following Tuesday,
except that such auction may be held on the preceding Friday. If, as the result
of a legal holiday, an auction is so held on the preceding Friday, that Friday
will be the treasury rate interest determination date pertaining to an interest
reset date occurring in the next succeeding week. If an

                                      S-10
<PAGE>   12

auction date shall fall on a day which would otherwise be an interest reset date
for a treasury rate note, then such interest reset date shall instead be the
first Business Day immediately following such auction date.

     The interest determination date pertaining to a floating rate note the
interest rate of which is determined by reference to two or more interest rate
bases will be the most recent Business Day which is at least two Business Days
prior to the applicable interest reset date for such floating rate note on which
each interest rate basis is determinable. Each interest rate basis will be
determined on that date, and the applicable interest rate will take effect on
the applicable interest reset date.

     Unless otherwise specified in the applicable pricing supplement, interest
payable in respect of floating rate notes shall be the accrued interest from and
including the original issue date or the last date to which interest has been
paid, as the case may be, up to but excluding the applicable interest payment
date.

     With respect to a floating rate note, accrued interest shall be calculated
by multiplying the principal amount of such note (or, in the case of a floating
rate note that is an indexed principal note, its face amount) by an accrued
interest factor. This accrued interest factor will be computed by adding the
interest factors calculated for each day in the period for which accrued
interest is being calculated. Unless otherwise specified in the applicable
pricing supplement the interest factor (expressed as a decimal calculated to
seven decimal places without rounding) for each such day is computed by dividing
the interest rate in effect on such day by 360, in the case of LIBOR notes,
prime rate notes, commercial paper rate notes, federal funds rate notes,
eleventh district cost of funds rate notes, and CD rate notes, or by the actual
number of days in the year, in the case of CMT rate notes or treasury rate
notes. For purposes of making the foregoing calculation, the interest rate in
effect on any interest reset date will be the applicable rate as reset on such
date.

     Unless otherwise specified in the applicable pricing supplement, all
percentages resulting from any calculation of the rate of interest on a floating
rate note will be rounded, if necessary, to the nearest 1/100,000 of 1%
(.0000001), with five one-millionths of a percentage point rounded upward, and
all currency amounts used in or resulting from such calculation on floating rate
notes will be rounded to the nearest one-hundredth of a unit (with .005 of a
unit being rounded upward).

     Unless otherwise indicated in the applicable pricing supplement and except
as provided below, interest will be payable, in the case of floating rate notes
that reset daily, weekly or monthly, on the third Wednesday of each month or on
the third Wednesday of March, June, September and December of each year, as
specified in the applicable pricing supplement; in the case of floating rate
notes that reset quarterly, on the third Wednesday of March, June, September,
and December of each year; in the case of floating rate notes that reset
semiannually, on the third Wednesday of each of two months of each year
specified in the applicable pricing supplement; and, in the case of floating
rate notes that reset annually, on the third Wednesday of one month of each year
specified in the applicable pricing supplement (each such day being an "INTEREST
PAYMENT DATE"). If an interest payment date with respect to any floating rate
note would otherwise be a day that is not a Business Day, that interest payment
date shall be postponed to the next succeeding Business Day, except that, in the
case of a LIBOR note, if such Business Day is in the next succeeding calendar
month, such interest payment date shall be the immediately preceding Business
Day.

CD RATE NOTES

     Each CD rate note will bear interest for each interest reset period at the
interest rate calculated with reference to the CD rate and the spread or spread
multiplier, if any, and subject to the minimum interest rate and the maximum
interest rate, if any, specified in such note and in the applicable pricing
supplement.

                                      S-11
<PAGE>   13

     Unless otherwise specified in the applicable pricing supplement, the "CD
RATE" for each interest reset period will be:

          (a) the rate on the CD rate interest determination date for negotiable
     certificates of deposit having the index maturity designated in the
     applicable pricing supplement as published in H.15(519) under the heading
     "CDs (Secondary Market)," or

          (b) if the rate referred to in clause (a) above is not published prior
     to 3:00 p.m., New York City time, on the calculation date pertaining to
     such CD rate interest determination date, then the "CD rate" for such CD
     rate interest reset period will be the rate on such CD rate interest
     determination date for negotiable U.S. dollar certificates of deposit of
     the index maturity specified in the applicable pricing supplement as
     published in H.15 Daily Update, or other recognized electronic source used
     for the purpose of displaying such rate, or

          (c) if the rate referred to in clause (b) is not published by 3:00
     p.m., New York City time, on such calculation date, then the "CD rate" for
     such interest reset period will be calculated by the calculation agent for
     such CD rate note and will be the arithmetic mean of the secondary market
     offered rates as of 10:00 a.m., New York City time, on such CD rate
     interest determination date of three leading nonbank dealers in negotiable
     U.S. dollar certificates of deposit in The City of New York selected by the
     calculation agent for such CD rate note for negotiable certificates of
     deposit of major U.S. money center banks of the highest credit standing (in
     the market for negotiable certificates of deposit) with a remaining
     maturity closest to the index maturity designated in the pricing supplement
     in an amount that is representative for a single transaction in that market
     at that time, or

          (d) if the dealers selected as aforesaid by such calculation agent are
     not quoting offered rates as mentioned in this sentence, the "CD rate" for
     such interest reset period will be the same as the CD rate for the
     immediately preceding interest reset period (or, if there was no such
     interest reset period, the initial interest rate).

COMMERCIAL PAPER RATE NOTES

     Each commercial paper rate note will bear interest for each interest reset
period at the interest rate calculated with reference to the commercial paper
rate and the spread or spread multiplier, if any, specified in that note and in
the applicable pricing supplement.

     Unless otherwise specified in the applicable pricing supplement, the
"COMMERCIAL PAPER RATE" for each interest reset period will be determined by the
calculation agent for such commercial paper rate note as of the commercial paper
rate interest determination date and shall be:

          (a) The Money Market Yield on such commercial paper rate interest
     determination date of the rate for commercial paper having the index
     maturity specified in the applicable pricing supplement, as such rate shall
     be published in H.15(519) under the heading "Commercial
     Paper -- Nonfinancial," or

          (b) if the rate referred to in clause (a) is not published prior to
     3:00 p.m., New York City time, on the calculation date pertaining to such
     commercial paper rate interest determination date, then the "commercial
     paper rate" for such interest reset period shall be the Money Market Yield
     on such commercial paper rate interest determination date of the rate for
     commercial paper of the specified index maturity as published in H.15 Daily
     Update, or such other recognized electronic source used for the purpose of
     displaying such rate, under the heading "Commercial Paper-Nonfinancial," or

          (c) if by 3:00 p.m., New York City time, on such calculation date the
     rate referred to in clause (b) is not yet published in either H.15(519) or
     H.15 Daily Update or another recognized electronic source used for the
     purpose of displaying such rate, then the "commercial paper rate" for such
     interest reset period shall be the Money Market Yield of the arithmetic
     mean of the offered rates, as of 11:00 a.m., New York City time, on such
     commercial paper rate interest determination date of three leading dealers
     of commercial paper in The City of New York selected by the

                                      S-12
<PAGE>   14

     calculation agent for such commercial paper rate note for commercial paper
     of the specified index maturity placed for an industrial issuer whose bonds
     are rated "AA" or the equivalent by a nationally recognized rating agency;
     provided, however, that if the dealers selected as aforesaid by such
     calculation agent are not quoting offered rates as mentioned in this
     sentence, the "commercial paper rate" for such interest reset period will
     be the same as the commercial paper rate for the immediately preceding
     interest reset period (or, if there was no such interest reset period, the
     initial interest rate).

     "MONEY MARKET YIELD" shall be a yield calculated in accordance with the
following formula:

<TABLE>
<S>                    <C>
                             D X 360
                       -------------
                       360 - (D X M)
Money Market Yield =
</TABLE>

where "D" refers to the applicable per annum rate for commercial paper quoted on
a bank discount basis and expressed as a decimal, and "M" refers to the actual
number of days in the interest period for which interest is being calculated.

FEDERAL FUNDS RATE NOTES

     Each federal funds rate note will bear interest for each interest reset
period at the interest rate calculated with reference to the federal funds rate
and the spread or spread multiplier, if any, specified in such note and in the
applicable pricing supplement.

     Unless otherwise specified in the applicable pricing supplement, the
"FEDERAL FUNDS RATE" for each interest reset period shall be:

          (a) the effective rate on the federal funds rate interest
     determination date for federal funds as published in H.15(519) under the
     heading "Federal Funds (Effective)," as such rate is displayed on Bridge
     Telerate, Inc. (or any successor service) on page 120 (or any other page as
     may replace such page on such service) ("TELERATE PAGE 120"), or

          (b) if the rate referred to in clause (a) does not appear on Telerate
     Page 120 or is not yet published prior to 3:00 p.m., New York City time, on
     the calculation date pertaining to such interest determination date, the
     "federal funds rate" for such interest reset period shall be the rate on
     such interest determination date as published in H.15 Daily Update, or such
     other recognized electronic service used for the purpose of displaying such
     rate under the heading "Federal Funds/Effective Rate,", or

          (c) if by 3:00 p.m., New York City time, on such calculation date the
     rate referred to in clause (b) does not appear on Telerate Page 120 or is
     not yet published in either H.15(519) or H.15 Daily Update or such other
     recognized electronic source, then the "federal funds rate" for such
     interest reset period will be calculated by the calculation agent and will
     be the arithmetic mean of the rates prior to 9:00 a.m., New York City time,
     on such interest determination date of the last transaction in overnight
     federal funds arranged by three leading brokers of federal funds
     transactions in The City of New York selected by the calculation agent,
     provided, that if the brokers selected by the calculation agent are not
     quoting as mentioned in this sentence, the federal funds rate will be the
     federal funds rate in effect on such federal funds interest determination
     date.

LIBOR NOTES

     Each LIBOR note will bear interest for each interest reset period at the
interest rate (calculated with reference to LIBOR and the spread and/or spread
multiplier, if any, and subject to the minimum interest rate and the maximum
interest rate, if any, specified in such note and in the applicable pricing
supplement).

                                      S-13
<PAGE>   15

     Unless otherwise specified in the applicable pricing supplement, "LIBOR"
will be determined by the calculation agent in accordance with the following
provisions:

          (a) With respect to any interest determination date relating to a
     LIBOR note or any floating rate note for which the interest is determined
     with reference to LIBOR (a "LIBOR INTEREST DETERMINATION DATE"), LIBOR will
     be, as specified, in the applicable pricing supplement, either:

             (1) the arithmetic mean of the offered rates for deposits in the
                 index currency having the index maturity designated in the
                 applicable pricing supplement, commencing on the second London
                 Banking Day immediately following that LIBOR interest
                 determination date, which appear on the Reuters Screen LIBO
                 Page as of 11:00 a.m., London time, on that LIBOR interest
                 determination date, if at least two such offered rates appear
                 on the Reuters Screen LIBO Page, unless such Reuters Screen
                 LIBO Page by its terms provides only for a single rate, in
                 which case such single rate shall be used ("LIBOR REUTERS"), or

             (2) the rate for deposits in the index currency having the index
                 maturity designated in the applicable pricing supplement,
                 commencing on the second London Business Day immediately
                 following that LIBOR interest determination date, which appears
                 on the Telerate Page 3750 as of 11:00 a.m., London time, on
                 that LIBOR interest determination date ("LIBOR TELERATE").
                 "REUTERS SCREEN LIBO PAGE" means the display designated as page
                 "LIBO" on the Reuters Monitor Money Rates Service (or such
                 other page as may replace the LIBO page on that service for the
                 purpose of displaying London interbank offered rates of major
                 banks for the applicable index currency). "TELERATE PAGE 3750"
                 means the display designated as page "3750" on the Dow Jones
                 Telerate Service (or such other page as may replace the 3750
                 page on that service or such other service or services as may
                 be nominated by the British Bankers' Association for the
                 purpose of displaying London interbank offered rates of major
                 banks for the applicable index currency). If neither LIBOR
                 Reuters nor LIBOR Telerate is specified in the applicable
                 pricing supplement, LIBOR for the applicable index currency
                 will be determined as if LIBOR Telerate (and, if the U.S.
                 dollar is the index currency, page 3750) had been specified. If
                 fewer than two offered rates appear on the Reuters Screen LIBO
                 Page (unless, as aforesaid, only a single rate is required), or
                 if no rate appears on the Telerate Page 3750, as applicable,
                 LIBOR in respect of that LIBOR interest determination date will
                 be determined as if the parties had specified the rate
                 described in (b) below.

          (b) With respect to a LIBOR interest determination date on which fewer
     than two offered rates (unless, as aforesaid, only a single rate is
     required) appear on the Reuters Screen LIBO Page, as specified in (a)(1)
     above, or on which no rate appears on Telerate Page 3750, as specified in
     (a)(2) above, as applicable, LIBOR will be determined on the basis of the
     rates at which deposits in the index currency having the index maturity
     designated in the applicable pricing supplement are offered at
     approximately 11:00 a.m., London time, on that LIBOR interest determination
     date by four major banks in the London interbank market selected by the
     calculation agent ("REFERENCE BANKS") to prime banks in the London
     interbank market, commencing on the second London Banking Day immediately
     following that LIBOR interest determination date and in a principal amount
     that is representative for a single transaction in such index currency in
     such market at such time. The calculation agent will request the principal
     London office of each of the reference banks to provide a quotation of its
     rate. If at least two such quotations are provided, LIBOR in respect of
     that LIBOR interest determination date will be the arithmetic mean of such
     quotations. If fewer than two quotations are provided, LIBOR in respect of
     that LIBOR interest determination date will be the arithmetic mean of the
     rates quoted at approximately 11:00 a.m., in the principal financial center
     for the country of the index currency, on the LIBOR interest determination
     date by three major banks in such principal financial center (which may
     include affiliates of the Agents) selected by the calculation agent for
     loans in the index currency to leading European banks, having the index
     maturity designed in the applicable
                                      S-14
<PAGE>   16

     pricing supplement commencing on the second London Banking Day immediately
     following such LIBOR interest determination date and in a principal amount
     that is representative for a single transaction in such index currency in
     such market at such time; provided, however, that if the banks selected as
     aforesaid by the calculation agent are not quoting as mentioned in this
     sentence, LIBOR with respect to such LIBOR interest determination date will
     be the rate of LIBOR in effect on such LIBOR interest determination date.

     "INDEX CURRENCY" means the currency specified in the applicable pricing
supplement as the currency for which LIBOR shall be calculated. If no such
currency is specified in the applicable pricing supplement, the index currency
shall be U.S. dollars.

TREASURY RATE NOTES

     Each treasury rate note will bear interest for each interest reset period
at the interest rate calculated with reference to the treasury rate and the
spread or spread multiplier, if any, specified in such note and in the
applicable pricing supplement.

     Unless otherwise specified in the applicable pricing supplement, the
"TREASURY RATE" for each interest reset period will be:

          (a) the rate from the auction held on the applicable treasury rate
     interest determination date (the "AUCTION") of direct obligations of the
     United States ("TREASURY BILLS") having the Index Maturity specified in the
     applicable pricing supplement under the caption "Investment Rate" on the
     display on Bridge Telerate, Inc. or any successor service on page 56 or any
     other page as may replace page 56 on that service ("TELERATE PAGE 56") or
     page 57 or any other page as may replace page 57 on that service ("TELERATE
     PAGE 57"), or

          (b) if the rate described in clause (a) is not so published by 3:00
     p.m., New York City time, on the related calculation date, the Bond
     Equivalent Yield of the rate for the applicable Treasury Bills as published
     in H.15 Daily Update, or other recognized electronic source used for the
     purpose of displaying the applicable rate, under the caption "U.S.
     Government Securities/Treasury Bills/Auction High," or

          (c) if the rate described in clause (b) is not so published by 3:00
     p.m., New York City time, on the related calculation date, the Bond
     Equivalent Yield of the auction rate of the applicable Treasury Bills
     announced by the U.S. Department of the Treasury, or

          (d) in the event that the rate referred to in clause (c) is not
     announced by the U.S. Department of the Treasury, or if the Auction is not
     held, the Bond Equivalent Yield of the rate on the applicable Treasury Rate
     interest determination date having the Index Maturity specified in the
     applicable pricing supplement published in H.15(519) under the caption
     "U.S. Government Securities/Treasury Bills/Secondary Market," or

          (e) if the rate referred to in clause (d) is not so published by 3:00
     p.m., New York City time, on the related calculation date, the rate on the
     applicable Treasury Rate Interest Determination Date as published in H.15
     Daily Update, or other recognized electronic source used for the purpose of
     displaying the applicable rate, under the caption "U.S. Government
     Securities/Treasury Bills/ Secondary Market," or

          (f) if the rate referred to in clause (e) is not so published by 3:00
     p.m., New York City time, on the related calculation date, the rate on the
     applicable Treasury Rate Interest Determination Date calculated by the
     calculation agent as the Bond Equivalent Yield of the arithmetic mean of
     the secondary market bid rates, as of approximately 3:30 p.m., New York
     City time, on the applicable interest determination date, of three primary
     U.S. government securities dealers, which may include the agent or its
     affiliates, selected by the calculation agent, for the issue of Treasury
     Bills with a remaining maturity closest to the index maturity specified in
     the applicable pricing supplement, or

                                      S-15
<PAGE>   17

          (g) if the dealers selected by the calculation agent are not quoting
     as mentioned in clause (f), the rate in effect on the applicable treasury
     rate interest determination date.

     "BOND EQUIVALENT YIELD" means a yield calculated in accordance with the
following formula and expressed as a percentage:

<TABLE>
<S>                       <C>            <C>
                              D X N
                          -------------  X 100
                          360 - (D X M)
Bond Equivalent Yield =
</TABLE>

where "D" refers to the applicable per annum rate for Treasury Bills quoted on a
bank discount basis, "N" refers to 365 or 366, as the case may be, and "M"
refers to the actual number of days in the interest period for which interest is
being calculated.

PRIME RATE NOTES

     Each prime rate note will bear interest at the interest rate calculated
with reference to the prime rate and the spread or spread multiplier, if any,
specified in such note and in the applicable pricing supplement.

     Unless otherwise specified in the applicable pricing supplement, the "PRIME
RATE" means, with respect to any prime rate interest determination date:

          (a) the rate on the applicable prime rate interest determination date
     as published in H.15(519) under the heading "Bank Prime Loan," or

          (b) if the rate referred to in clause (a) is not so published by 3:00
     p.m., New York City time, on the related calculation date, the rate on the
     applicable Prime Rate Interest Determination Date published in H.15 Daily
     Update, or such other recognized electronic source used for the purpose of
     displaying the applicable rate under the caption "Bank Prime Loan," or

          (c) if the rate referred to in clause (b) is not so published by 3:00
     p.m., New York City time, on the calculation date pertaining to such prime
     rate interest determination date, then the prime rate will be determined by
     the calculation agent and will be the arithmetic mean of the rates of
     interest publicly announced by each bank that appears on the Reuters Screen
     USPRIME1 Page as such bank's prime rate or base lending rate as in effect
     for that prime rate interest determination date.

     "REUTERS SCREEN USPRIME1" means the display designated as page "USPRIME1"
on the Reuters Monitor Money Rates Service (or such other page as may replace
the USPRIME1 page on that service for the purpose of displaying prime rates or
base lending rates of major U.S. banks). If fewer than four such rates but more
than one such rate appear on the Reuters Screen USPRIME1 Page for such prime
rate interest determination date, the prime rate shall be determined by the
calculation agent and will be the arithmetic mean of the prime rates quoted on
the basis of actual number of days in the year divided by 360 as of the close of
business on such prime rate interest determination date by at least three major
money center banks in New York City selected by the calculation agent (after
consulting with us). If the banks selected as aforesaid are not quoting as
mentioned in this sentence, the prime rate will remain the prime rate in effect
on such prime rate interest determination date.

CMT RATE NOTES

     CMT rate notes will bear interest at the interest rate (calculated with
reference to the CMT rate and the spread and/or spread multiplier, if any)
specified on the face of the CMT rate note and in the applicable pricing
supplement.

     Unless otherwise specified in the applicable pricing supplement, "CMT RATE"
means, with respect to any CMT rate interest determination date:

          (a) the rate displayed on the Designated CMT Telerate Page under the
     caption ". . . Treasury Constant Maturities . . . Federal Reserve Board
     Release H.15. . . . Mondays Approximately 3:45 p.m.," under the column for
     the Designated CMT Maturity Index (as defined below) for (1) if the

                                      S-16
<PAGE>   18

     Designated CMT Telerate Page is 7051, the rate on such CMT interest
     determination date and (2) if the Designated CMT Telerate Page is 7052, the
     rate for the week, or the month, as applicable, ended immediately preceding
     the week in which the related CMT interest determination date occurs, or

          (b), if the rate referred to in clause (a) is no longer displayed on
     the relevant page, or if not displayed by 3:00 p.m., New York City time, on
     the related interest calculation date, then the CMT rate for such CMT
     interest determination date will be such treasury constant maturity rate
     for the Designated CMT Maturity Index as published in H.15(519), or

          (c) if the rate referred to in clause (b) is no longer published, or
     if not published by 3:00 p.m., New York City time, on the related
     calculation date, then the CMT rate for such CMT interest determination
     date will be such Treasury Constant Maturity Rate for the Designated CMT
     Maturity Index (or other U.S. Treasury rate for the Designated CMT Maturity
     Index) for the CMT interest determination date with respect to such
     interest reset date as may then be published by either the Board of
     Governors of the Federal Reserve System or the U.S. Department of the
     Treasury that the calculation agent determines to be comparable to the rate
     formerly displayed on the Designated CMT Telerate Page and published in the
     relevant H.15(519), or

          (d) if the rate referred to in clause (c) is not provided by 3:00
     p.m., New York City time, on the related calculation date, then the CMT
     rate for the CMT rate interest determination date will be calculated by the
     calculation agent and will be a yield to maturity, based on the arithmetic
     mean of the secondary market closing offer side prices as of approximately
     3:30 p.m., New York City time, on the CMT rate interest determination date
     reported, according to their written records, by three leading primary U.S.
     government securities dealers (each, a "REFERENCE DEALER") in The City of
     New York selected by the calculation agent (from five such reference
     dealers selected by the calculation agent and eliminating the highest
     quotation (or, in the event of equality, one of the highest) and the lowest
     quotation (or, in the event of equality, one of the lowest)), for the most
     recently issued direct noncallable fixed rate obligations of the United
     States ("TREASURY NOTES") with an original maturity of approximately the
     Designated CMT Maturity Index and a remaining term to maturity of not less
     than such Designated CMT Maturity Index minus one year, or

          (e) if the calculation agent cannot obtain three such CMT rate
     Treasury note quotations, the CMT rate for such CMT rate interest
     determination date will be calculated by the calculation agent and will be
     a yield to maturity based on the arithmetic mean of the secondary market
     offer side prices as of approximately 3:30 p.m., New York City time, on the
     CMT rate interest determination date of three reference dealers in The City
     of New York (from five such reference dealers selected by the calculation
     agent and eliminating the highest quotation (or, in the event of equality,
     one of the highest) and the lowest quotation (or, in the event of equality,
     one of the lowest)), for Treasury notes with an original maturity of the
     number of years that is the next highest to the Designated CMT Maturity
     Index and a remaining term to maturity closest to the Designated CMT
     Maturity Index in an amount of at least $100 million, or

          (f), if three or four (and not five) of such reference dealers are
     quoting as described above, then the CMT rate will be based on the
     arithmetic mean of the offer prices obtained and neither the highest nor
     lowest of such quotes will be eliminated, or

          (g) if fewer than three reference dealers selected by the calculation
     agent are quoting as described herein, the CMT rate will be the CMT rate in
     effect on such CMT rate interest determination date. If two Treasury notes
     with an original maturity as described in clause (f) have remaining terms
     to maturity equally close to the Designated CMT Maturity Index, the quotes
     for the treasury rate notes with the shorter remaining term to maturity
     will be used.

     "DESIGNATED CMT TELERATE PAGE" means the display on the Dow Jones Telerate
Service on the page designated in the applicable pricing supplement (or any
other page as may replace such page on that service for the purpose of
displaying Treasury Constant Maturities as reported in H.15(519)) for the
purpose of displaying Treasury Constant Maturities as reported in H.15(519). If
no such page is specified

                                      S-17
<PAGE>   19

in the applicable pricing supplement, the Designated CMT Telerate Page shall be
7052 for the most recent week.

     "DESIGNATED CMT MATURITY INDEX" means the original period to maturity of
the U.S. Treasury securities (either 1, 2, 3, 5, 7, 10, 20 or 30 years)
specified in the applicable pricing supplement with respect to which the CMT
rate will be calculated. If no such maturity is specified in the applicable
pricing supplement, the Designated CMT Maturity Index shall be 2 years.

ELEVENTH DISTRICT COST OF FUNDS RATE NOTES

     Each eleventh district cost of funds rate note will bear interest at
interest rates calculated with reference to the eleventh district cost of funds
rate and the spread or spread multiplier, if any, specified on the face of the
eleventh district cost of funds rate note and in the applicable pricing
supplement.

     Unless otherwise specified in the applicable pricing supplement, "ELEVENTH
DISTRICT COST OF FUNDS RATE" means, with respect to any eleventh district cost
of funds rate interest determination date:

          (a) the rate equal to the monthly weighted average cost of funds for
     the calendar month immediately preceding the month in which such eleventh
     district cost of funds rate interest determination date falls, as set forth
     under the caption "11th district" on Telerate Page 7058 as of 11:00 a.m.,
     San Francisco time, on such eleventh district cost of funds rate interest
     determination date, or

          (b) if such rate does not appear on Telerate Page 7058 on any related
     eleventh district cost of funds rate interest determination date, the
     eleventh district cost of funds rate on such eleventh district cost of
     funds rate interest determination date shall be the monthly weighted
     average cost of funds paid by member institutions of the Eleventh Federal
     Home Loan Bank District that was most recently announced (the "INDEX") by
     the Federal Home Loan Bank of San Francisco as such cost of funds for the
     calendar month immediately preceding the date of such announcement, or

          (c) if the Federal Home Loan Bank of San Francisco fails to announce
     such rate for the calendar month immediately preceding such eleventh
     district cost of funds rate interest determination date, then the eleventh
     district cost of funds rate determined as of such eleventh district cost of
     funds rate interest determination date shall be the eleventh district cost
     of funds rate in effect on such eleventh district cost of funds rate
     interest determination date.

     "TELERATE PAGE 7058" means the display designated as page "7058" on the
Bridge Telerate Inc. (or such other page as may replace the 7058 page on that
service for the purpose of displaying the monthly weighted average cost of funds
paid by member institutions of the Eleventh Federal Home Loan Bank District).

SUBSEQUENT INTEREST PERIODS

     The pricing supplement relating to each note will indicate whether we have
the option to reset the interest rate (in the case of a fixed rate note) with
respect to that note or the spread or spread multiplier (in the case of a
floating rate note) with respect to that note and, if so, the date or dates on
which such interest rate or such spread or spread multiplier, as the case may
be, may be reset (each an "OPTIONAL RESET DATE").

     We will notify the Trustee for a note whether or not we intend to exercise
such option with respect to such note at least 45 but not more than 60 calendar
days prior to an optional reset date for such note. Not later than 40 calendar
days prior to such optional reset date, the Trustee for such note will mail to
the holder of such note a notice (the "RESET NOTICE"), first class, postage
prepaid, indicating whether we have elected to reset the interest rate (in the
case of a fixed rate note) or the spread or spread multiplier (in the case of a
floating rate note) and if so, (a) such new interest rate or such new spread or
spread multiplier, as the case may be, and (b) the provisions, if any, for
redemption during the period from such optional reset date to the next optional
reset date or, if there is no such next optional reset date, to the

                                      S-18
<PAGE>   20

stated maturity date of the note (each such period a "SUBSEQUENT INTEREST
PERIOD"), including the date or dates on which or the period or periods during
which and the price or prices at which such redemption may occur during such
subsequent interest period.

     Notwithstanding the foregoing, not later than 20 calendar days prior to an
optional reset date for a note, we may, at our option, revoke the interest rate
(in the case of a fixed rate note) or the spread or spread multiplier (in the
case of a floating rate note) provided for in the reset notice with respect to
such optional reset date and establish a higher interest rate (in the case of a
fixed rate note) or a higher spread or spread multiplier (in the case of a
floating rate note) for the subsequent interest period commencing on such
optional reset date by causing the Trustee for such note to mail notice of such
higher interest rate or higher spread or spread multiplier, as the case may be,
first class, postage prepaid, to the holder of such note. Such notice shall be
irrevocable. All notes with respect to which the interest rate or spread or
spread multiplier is reset on an optional reset date will bear such higher
interest rate (in the case of fixed rate notes) or higher spread or spread
multiplier (in the case of floating rate notes), whether or not tendered for
repayment.

     The holder of a note will have the option to elect repayment of such note
by us on each optional reset date at a price equal to the principal amount
thereof, plus interest accrued to such optional reset date. In order for a note
to be repaid on an optional reset date, the holder of the note must follow the
procedures set forth below under "Optional Redemption, Repayment and Repurchase"
for optional repayment, except that the period for delivery of such note or
notification to the Trustee for such note shall be at least 25 but not more than
35 calendar days prior to such optional reset date, and except that a holder who
has tendered a note for repayment pursuant to a reset notice may, by written
notice to the Trustee for such note, revoke any such tender for repayment until
the close of business on the tenth day prior to such optional reset date.

INDEXED NOTES

     We may from time to time offer notes ("INDEXED NOTES") on which certain or
all interest payments (in the case of an "INDEXED RATE NOTE"), and/or the
principal amount payable at the stated maturity date or earlier redemption or
retirement (in the case of an "INDEXED PRINCIPAL NOTE"), is determined by
reference to the principal amount of such notes (or, in the case of an indexed
principal note, to the amount designated in the applicable pricing supplement as
the "face amount" of such indexed note) and by reference to indices of prices,
changes in prices, or differences between prices, of securities, currencies,
intangibles, goods, articles or commodities, or by such other objective price,
economic or other measures as are described in the applicable pricing
supplement. A description of the index used in any determination of an interest
or principal payment, and the method or formula by which interest or principal
payments will be determined by reference to such index, will be set forth in the
applicable pricing supplement.

     In the case of a fixed rate note, floating rate note or indexed rate note
that is also an indexed principal note, the amount of any interest payment will
be determined by reference to the face amount of such indexed note unless
specified otherwise in the applicable pricing supplement. In the case of an
indexed principal note, the principal amount payable at the stated maturity date
or any earlier redemption or repayment of the indexed note may be different from
the face amount.

     If the determination of the index on which any interest payment or the
principal amount of an indexed note is calculated or announced by a third party,
which may be Firstar Bank, N.A. or an affiliate of ours, and such third party
either suspends the calculation or announcement of such index or changes the
basis upon which such index is calculated (other than changes consistent with
policies in effect at the time such indexed note was issued and permitted
changes described in the applicable pricing supplement), then such index shall
be calculated for purposes of such indexed note by another third party selected
by us, which may be Firstar Bank, N.A. or another affiliate of ours, subject to
the same conditions and controls as applied to the original third party. If for
any reason such index cannot be calculated on the same basis and subject to the
same conditions and controls as applied to the original third party, then the
indexed interest payments, if any, or any indexed principal amount of such
indexed note, shall be

                                      S-19
<PAGE>   21

calculated in the manner set forth in the applicable pricing supplement. Any
determination of such third party shall in the absence of manifest error be
binding on all parties. See "Risk Factors."

AMORTIZING NOTES

     We may from time to time offer amortizing notes ("AMORTIZING NOTES") on
which a portion or all the principal amount is payable prior to its stated
maturity date in accordance with a schedule, by application of a formula, or by
reference to an index. Unless otherwise specified in the applicable pricing
supplement, interest on each amortizing note will be computed on the basis of a
360-day year of twelve 30-day months. Payments with respect to amortizing notes
will be applied first to interest due and payable on the amortizing notes and
then to the reduction of the unpaid principal amount of the amortizing notes.
Further information concerning additional terms and conditions of any amortizing
notes, including terms for repayment thereof, will be set forth in the
applicable pricing supplement.

EXTENSION OF MATURITY

     The pricing supplement relating to each note will indicate whether we have
the option to extend the stated maturity date of such note for one or more
periods of whole years from one to five (each an "EXTENSION PERIOD") up to but
not beyond the date (the "FINAL MATURITY") set forth in such pricing supplement.

     We may exercise such option with respect to a note by notifying the Trustee
for such note at least 45 but not more than 60 calendar days prior to the old
stated maturity date of the note. Not later than 40 calendar days prior to the
old stated maturity date of such note, the Trustee for such note will mail to
the holder of such note a notice (the "EXTENSION NOTICE"), first class, postage
prepaid. The extension notice will set forth:

     - our election to extend the stated maturity date of such note;

     - the new stated maturity date;

     - in the case of a fixed rate note, the interest rate applicable to the
       extension period or, in the case of a floating rate note, the spread or
       spread multiplier applicable to the extension period; and

     - the provisions, if any, for redemption during the extension period,
       including the date or dates on which or the period or periods during
       which and the price or prices at which such redemption may occur during
       the extension period.

     Upon the mailing by the Trustee of an extension notice to the holder of a
note, the stated maturity date of that note shall be extended automatically,
and, except as modified by the extension notice and as described in the next
paragraph, that note will have the same terms as prior to the mailing of such
extension notice.

     Notwithstanding the foregoing, not later than 20 calendar days prior to the
old stated maturity date of such note, we may, at our option, revoke the
interest rate (in the case of a fixed rate note) or the spread or spread
multiplier (in the case of a floating rate note) provided for in the extension
notice for such note and establish a higher interest rate (in the case of a
fixed rate note) or a higher spread or spread multiplier (in the case of a
floating rate note) for the extension period, by causing the Trustee for such
note to mail notice of such higher interest rate or higher spread or spread
multiplier, as the case may be, first class, postage prepaid, to the holder of
such note. Such notice shall be irrevocable. All notes with respect to which the
stated maturity date is extended will bear such higher interest rate (in the
case of fixed rate notes) or higher spread or spread multiplier (in the case of
floating rate notes) for the extension period, whether or not tendered for
repayment.

     If we extend the stated maturity date of a note, the holder of that note
will have the option to elect repayment of such note by us on the old stated
maturity date at a price equal to the principal amount thereof, plus interest
accrued to such date. In order for a note to be repaid on the old stated
maturity date once we have extended the stated maturity date of that note, the
holder of that note must follow the
                                      S-20
<PAGE>   22

procedures set forth below under "-- Optional Redemption, Repayment and
Repurchase" for optional repayment, except that the period for delivery of such
note or notification to the Trustee shall be at least 25 but not more than 35
days prior to the old stated maturity date, and except that a holder who has
tendered a note for repayment pursuant to an extension notice may, by written
notice to the Trustee, revoke any such tender for repayment until the close of
business on the tenth day before the old stated maturity date.

OPTION REDEMPTION, REPAYMENT AND REPURCHASE

     The pricing supplement relating to each note will indicate either that such
note cannot be redeemed prior to its stated maturity date or that such note will
be redeemable at our option, in whole or in part, and the date or dates (each an
"OPTIONAL REDEMPTION DATE") on which such note may be redeemed and the price at
which (together with accrued interest to such optional redemption date) such
note may be redeemed on each such optional redemption date. We may exercise such
option with respect to a note by notifying the Trustee at least 45 days prior to
any optional redemption date.

     Unless otherwise specified in the applicable pricing supplement, not more
than 60 days prior to the date of redemption, the Trustee shall mail notice of
such redemption, first class, postage prepaid, to the holder of such note. In
the event of redemption of a note in part only, a new note or notes for the
unredeemed portion thereof shall be issued to the holder thereof upon the
cancellation thereof. The notes will not be subject to any sinking fund.

     The pricing supplement relating to each note will also indicate whether the
holder of such note will have the option to elect repayment of such note by us
prior to its stated maturity date, and, if so, such pricing supplement will
specify the date or dates on which such note may be repaid (each an "OPTIONAL
REPAYMENT DATE") and the price at which, together with accrued interest to such
optional repayment date, such note may be repaid on each such optional repayment
date.

     In order for a note to be repaid, the Trustee must receive, at least 30 but
not more than 45 days prior to an optional repayment date, (a) such note with
the form entitled "Option to Elect Repayment" on the reverse thereof duly
completed, or (b) a telegram, telex, facsimile transmission or letter from a
member of a national securities exchange or the National Association of
Securities Dealers, Inc. or a commercial bank or trust company in the United
States setting forth the name of the holder of such note, the principal amount
of such note to be repaid, the certificate number or a description of the tenor
and terms of such note, a statement that the option to elect repayment is being
exercised thereby and a guarantee that the note to be repaid with the form
entitled "Option to Elect Repayment" on the reverse of the note duly completed
will be received by such Trustee not later than five Business Days after the
date of such telegram, telex, facsimile transmission or letter. If the procedure
described in clause (b) of the preceding sentence is followed, then such note
and form duly completed must be received by the Trustee by such fifth Business
Day. Any tender of a note by the holder for repayment (except pursuant to a
reset notice or an extension notice) shall be irrevocable. The repayment option
may be exercised by the holder of a note for less than the entire principal
amount of such note provided that the principal amount of such note remaining
outstanding after repayment is an authorized denomination. Upon such partial
repayment, such note shall be cancelled and a new note or notes for the
remaining principal amount thereof shall be issued in the name of the holder of
such repaid note.

     If a note is represented by a global security, the nominee of the
Depository Trust Company ("DTC") will be the holder of such note and therefore
will be the only entity that can exercise a right to repayment. In order to
ensure that DTC's nominee will timely exercise a right to repayment with respect
to a particular note, the beneficial owner of such note must instruct the broker
or other direct or indirect participant through which it holds an interest in
such note to notify DTC of its desire to exercise a right to repayment.
Different firms have different cut-off times for accepting instructions from
their customers and, accordingly, each beneficial owner should consult the
broker or other direct or indirect participant through which it holds an
interest in a note in order to ascertain the cut-off time by which such an
instruction must be given in order for timely notice to be delivered to DTC.

                                      S-21
<PAGE>   23

     Notwithstanding anything in this prospectus supplement to the contrary, if
a note is an original issue discount note (other than an indexed note), the
amount payable on such note in the event of redemption or repayment prior to its
stated maturity date shall be the amortized face amount of such note as of the
date of redemption or the date of repayment, as the case may be. The "amortized
face amount" of a note issued at a discount shall be the amount equal to: (a)
the issue price set forth in the applicable pricing supplement, plus (b) that
portion of the difference between the issue price and the principal amount of
such note that has accrued at the yield to maturity set forth in the pricing
supplement (computed in accordance with generally accepted U.S. bond yield
computation principles) by such date of redemption or repayment, but in no event
shall the amortized face amount of a note issued at a discount exceed its
principal amount.

     We may at any time purchase notes at any price in the open market or
otherwise. Notes so purchased by us may, at our discretion, be held or resold or
surrendered to the Trustee for cancellation.

BOOK-ENTRY SYSTEM

     Upon issuance, and subject to the rules of DTC, all fixed rate book-entry
notes having the same original issue date and otherwise identical terms will be
represented by a single global security. Each Global Security representing
book-entry notes will be deposited with, or on behalf of, DTC, and registered in
the name of a nominee of DTC. Book-entry notes will not be exchangeable for
certificated notes and will not otherwise be issuable as certificated notes.

     DTC has advised us and the Agent as follows: DTC is a limited-purpose trust
company organized under New York Banking Law, a "banking organization" within
the meaning of the New York Banking Law, a member of the Federal Reserve System,
a "clearing corporation" within the meaning of the New York Uniform Commercial
Code, and a "clearing agency" registered pursuant to the provisions of Section
17A of the Securities Exchange Act of 1934, as amended. DTC was created to hold
securities of its participants and to facilitate the clearance and settlement of
securities transactions among its participants in such securities through
electronic book-entry changes in accounts of the participants, thereby
eliminating the need for physical movement of securities certificates. DTC's
participants include securities brokers and dealers (including the Agent),
banks, trust companies, clearing corporations, and certain other organizations,
some of whom (and/or their representatives) own DTC. Access to DTC's book-entry
system is also available to others, such as banks, brokers, dealers and trust
companies that clear through or maintain a custodial relationship with a
participant, either directly or indirectly.

     DTC management is aware that some computer applications, systems and the
like for processing data ("SYSTEMS") that are dependent upon calendar dates,
including dates before, on, and after January 1, 2000, may encounter "Year 2000
problems." DTC has informed its participants and other members of the financial
community (the "INDUSTRY") that it has developed and is implementing a program
so that its Systems, as the same relate to the timely payment of distributions
(including principal and income payments) to securityholders, book-entry
deliveries and settlement of trades within DTC ("DTC SERVICES"), continue to
function appropriately. This program includes a technical assessment and a
remediation plan, each of which is complete. Additionally, DTC's plan includes a
testing phase, which is expected to be completed within appropriate time frames.

     However, DTC's ability to perform properly its services is also dependent
upon other parties, including but not limited to issuers and their agents, as
well as third party vendors from whom DTC licenses software and hardware, and
third party vendors on whom DTC relies for information or the provision of
services, including telecommunication and electrical utility service providers,
among others. DTC has informed the Industry that it is contacting (and will
continue to contact) third party vendors from whom DTC acquires services to: (a)
impress upon them the importance of such services being Year 2000 compliant, and
(b) determine the extent of their efforts for Year 2000 remediation (and, as
appropriate, testing) of their services. In addition, DTC is in the process of
developing such contingency plans as it deems appropriate. According to DTC, the
foregoing information with respect to DTC has been provided

                                      S-22
<PAGE>   24

to the Industry for informational purposes only and is not intended to serve as
a representation, warranty, or contract modification of any kind.

     A further description of DTC's procedures with respect to Global Securities
representing book-entry notes is set forth in the prospectus under "Description
of Debt Securities -- Temporary Global Securities." DTC has confirmed to us, the
Agents and the Trustees that it intends to follow such procedures.

             CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES

     The following summary describes certain U.S. federal income tax
consequences of the ownership of notes as of the date hereof. Except where
noted, it deals only with notes held as capital assets and does not deal with
special situations, such as those of dealers in securities or currencies,
traders in securities who elect to use a mark-to-market method of accounting,
financial institutions, life insurance companies, persons holding notes as part
of a hedging or conversion transaction or straddle or U.S. holders (as defined
below) whose "functional currency" is not the U.S. dollar. Moreover, the summary
deals only with notes that are due to mature 30 years or less from the date on
which they are issued. The U.S. federal income tax consequences of ownership of
notes due to mature more than 30 years from their date of issue will be
discussed in the applicable pricing supplement. Furthermore, the discussion
below is based upon the provisions of the Internal Revenue Code of 1986, as
amended (the "CODE"), and regulations, rulings and judicial decisions thereunder
as of the date hereof, and such authorities may be repealed, revoked or modified
so as to result in federal income tax consequences different from those
discussed below. Persons considering the purchase, ownership or disposition of
notes should consult their own tax advisors concerning the federal income tax
consequences in light of their particular situations as well as any consequences
arising under the laws of any other taxing jurisdiction.

U.S. HOLDERS

     As used herein, a "U.S. HOLDER" of a note means a holder that is a citizen
or resident of the United States, a corporation or partnership created or
organized in or under the laws of the United States or any political subdivision
thereof, or an estate or trust the income of which is subject to United States
federal income taxation regardless of its source. A trust will be a "U.S.
holder" of a note only if the trust is subject to the primary supervision of a
court within the United States and the control of a United States fiduciary as
described in section 7701(a)(30) of the Code. A "NON-U.S. HOLDER" is a holder
that is not a U.S. holder.

PAYMENTS OF INTEREST

     Except as described below, interest on a note will generally be taxable to
a U.S. holder as ordinary income from domestic sources at the time it is paid or
accrued in accordance with the U.S. holder's method of accounting for tax
purposes.

ORIGINAL ISSUE DISCOUNT

     The following is a summary of the principal U.S. federal income tax
consequences of the ownership of notes originally issued at a discount by U.S.
holders. The following discussion does not address notes providing for
contingent payments other than notes that bear qualified stated interest.

     A note may be issued for an amount that is less than its stated redemption
price at maturity (the sum of all payments to be made on the note other than
"qualified stated interest"). The difference between the stated redemption price
at maturity of the note and its "issue price," if such difference is at least
0.25% of the stated redemption price at maturity multiplied by the number of
complete years to maturity or, in the case of amortizing notes, by the weighted
average maturity, will be "original issue discount" ("OID").

     The "issue price" of each note in a particular offering is the first price
at which a substantial amount of that particular offering is sold (other than to
an underwriter, placement agent or wholesaler). "Qualified stated interest" is
stated interest that is unconditionally payable in cash or in property (other
than debt
                                      S-23
<PAGE>   25

instruments of the issuer) at least annually at a single fixed rate or, subject
to certain conditions, based on one or more interest indices. Interest is
payable at a single fixed rate only if the rate appropriately takes into account
the length of the interval between payments.

     In the case of a note issued with de minimis OID (i.e., discount that is
not treated as OID because it is less than 0.25 percent of the stated redemption
price at maturity multiplied by the number of complete years to maturity or, in
the case of amortizing notes, by the weighted average maturity), the U.S. holder
generally must include such de minimis OID in income as capital gain as stated
principal payments on the notes are made in proportion to the stated principal
amount of the note.

     Certain notes may be redeemed or repaid prior to their stated maturity date
at the option of Firstar and/or at the option of the holder. Notes originally
issued at a discount and containing such features may be subject to rules that
differ from the general rules discussed herein. Persons considering the purchase
of notes originally issued at a discount with such features should carefully
examine the applicable pricing supplement and should consult their own tax
advisors with respect to such features since the tax consequences with respect
to OID will depend, in part, on the particular terms and features of the notes.

     U.S. holders of notes originally issued at a discount with a maturity upon
issuance of more than one year must, in general, include OID in income in
advance of the receipt of some or all of the related cash payments. The amount
of OID includible in income by the initial U.S. holder of a note originally
issued at a discount is the sum of the "daily portions" of OID with respect to
the note for each day during the taxable year or portion of the taxable year in
which such U.S. holder held such note ("ACCRUED OID"). The daily portion is
determined by allocating to each day in any "accrual period" a pro rata portion
of the OID allocable to that accrual period. The "accrual period" for a note
originally issued at a discount may be of any length and may vary in length over
the term of the note, provided that each accrual period is no longer than one
year and each scheduled payment of principal or interest occurs on the first day
or the final day of an accrual period. The amount of OID that will be allocated
to any accrual period is an amount equal to the excess, if any, of: the product
of the note's adjusted issue price at the beginning of such accrual period and
its yield to maturity (determined on the basis of compounding at the close of
each accrual period and properly adjusted for the length of the accrual period)
over; the sum of any qualified stated interest allocable to the accrual period.
OID that will be allocated to a final accrual period is the difference between
the amount payable at maturity (other than a payment of qualified stated
interest) and the adjusted issue price at the beginning of the final accrual
period. Special rules will apply for calculating OID for an initial short
accrual period. The "adjusted issue price" of a note at the beginning of any
accrual period is equal to its issue price increased by the accrued OID for each
prior accrual period (determined without regard to the amortization of any
acquisition or bond premium, as described below) and reduced by any payments
(other than qualified stated interest) made with respect to such note on or
before the first day of the accrual period. Under these rules, a U.S. holder
will have to include in income increasingly greater amounts of OID in successive
accrual periods. We are required to provide information returns stating the
amount of OID accrued on notes held of record by persons other than corporations
and other exempt holders.

     In the case of a note that is originally issued at a discount that is a
floating rate note, both the "yield to maturity" and "qualified stated interest"
will be determined solely for purposes of calculating the accrual of OID as
though the note will bear interest in all periods at a fixed rate generally
equal to the rate that would be applicable to interest payments on the note on
its date of issue or, in the case of certain floating rate notes, the rate that
reflects the yield to maturity that is reasonably expected for the note.
Additional rules may apply if interest on a floating rate note is based on more
than one interest index. Persons considering the purchase of floating rate notes
should carefully examine the applicable pricing supplement and should consult
their own tax advisors regarding the United States federal income tax
consequences of the holding and disposition of such notes.

     U.S. holders may elect to treat all interest on any note as OID and
calculate the amount includible in gross income under the constant yield method
described above. For the purposes of this election, interest includes stated
interest, acquisition discount, OID, de minimis OID, market discount, de minimis
market

                                      S-24
<PAGE>   26

discount and unstated interest, as adjusted by any amortizable bond premium or
acquisition premium. A U.S. holder must choose the treatment for the taxable
year in which the U.S. holder acquired the note, and may not be revoked without
the consent of the Internal Revenue Service. U.S. holders should consult with
their own tax advisors about this election.

SHORT-TERM NOTES

     In the case of notes originally issued at a discount and having a term of
one year or less ("SHORT-TERM ORIGINAL ISSUE DISCOUNT NOTES"), all payments
(including all stated interest) will be included in the stated redemption price
at maturity and, thus, U.S. holders will generally be taxable on the discount in
lieu of stated interest. The discount will be equal to the excess of the stated
redemption price at maturity over the issue price of a short-term original issue
discount note, unless the U.S. holder elects to compute this discount using tax
basis instead of issue price. An election to compute this discount using tax
basis will apply to all obligations acquired by the holder in or after the first
taxable year to which the election applies and may not be revoked without the
consent of the Internal Revenue Service. In general, individuals and certain
other cash method U.S. holders of short-term original issue discount notes are
not required to include accrued discount in their income currently unless they
elect to do so. U.S. holders who report income for federal income tax purposes
on the accrual method and certain other U.S. holders are required to accrue
discount on such short-term original issue discount notes (as ordinary income)
on a straight-line basis, unless an election is made to accrue the discount
according to a constant yield method based on daily compounding. In the case of
a U.S. holder who is not required, and does not elect, to include discount in
income currently, any gain realized on the sale, exchange or retirement of the
short-term original issue discount note will be ordinary income to the extent of
the discount accrued through the date of sale, exchange or retirement. In
addition, a U.S. holder who is not required, and does not elect, to include
accrued discount in income currently may be required to defer deductions for all
or a portion of the U.S. holder's interest expense with respect to any
indebtedness incurred or continued to purchase or carry such notes.

MARKET DISCOUNT

     If a U.S. holder purchases a note other than an original issue discount
note for an amount that is less than its stated redemption price at maturity, or
an original issue discount note for an amount that is less than its "revised
issue price" (defined as the sum of the issue price of the note and the
aggregate amount of the OID includible, if any, without regard to the rules for
acquisition premium discussed below, in the gross income of all previous holders
of the note), the amount of the difference will be treated as "market discount"
for U.S. federal income tax purposes, unless such difference is less than a
specified de minimis amount. Under the market discount rules, a U.S. holder will
be required to treat any principal payment on, or any gain on the sale,
exchange, retirement or other disposition of, a note as ordinary income to the
extent of the market discount which has not previously been included in income
and is treated as having accrued on such note at the time of such payment or
disposition. In addition, the U.S. holder may be required to defer, until the
maturity of the note or its earlier disposition in a taxable transaction, the
deduction of all or a portion of the interest expense on any indebtedness
incurred or continued to purchase or carry such note.

     Any market discount will be considered to accrue ratably during the period
from the date of acquisition to the stated maturity date of the note, unless the
U.S. holder elects to accrue on a constant interest rate method. A U.S. holder
of a note may elect to include market discount in income currently as it accrues
(on either a ratable or constant interest rate basis), in which case the rules
described above regarding the deferral of interest deductions and the treatment
of principal payments on, or gain on the sale, exchange, retirement or other
disposition of, a note will not apply. This election to include market discount
in income currently, once made, applies to all market discount obligations
acquired in or after the first taxable year to which the election applies, and
may not be revoked without the consent of the IRS.

                                      S-25
<PAGE>   27

ACQUISITION PREMIUM; AMORTIZABLE BOND PREMIUM

     A U.S. holder who purchases a note for an amount that is greater than its
adjusted issue price, but equal to or less than the sum of all amounts payable
on the note after the purchase date (other than payments of qualified stated
interest), will be considered to have purchased such note at an "acquisition
premium." Under the acquisition premium rules, the amount of OID which such
holder must include in its gross income with respect to such note for any
taxable year will be reduced by the portion of such acquisition premium properly
allocable to such year.

     A U.S. holder who purchases a note for an amount in excess of the sum of
all amounts payable on the note after the purchase date (other than payments of
qualified stated interest) will be considered to have purchased the note at a
"premium" and will not be required to include any OID in income. A U.S. holder
generally may elect to amortize the premium over the remaining term of the note
on a constant yield method. The amount amortized in any year will be treated as
a reduction of the U.S. holder's interest income from the note. Bond premium on
a note held by a U.S. holder that does not make such an election will decrease
the gain or increase the loss otherwise recognized on disposition of the note.
The election to amortize premium on a constant yield method once made applies to
all debt obligations held or subsequently acquired by the electing U.S. holder
on or after the first day of the first taxable year to which the election
applies and may not be revoked without the consent of the Internal Revenue
Service.

SALE, EXCHANGE AND RETIREMENT OF NOTES

     A U.S. holder's tax basis in a note will, in general, be the U.S. holder's
cost therefor, increased by OID, market discount or any discount with respect to
a short-term original issue discount note, previously included in income by the
U.S. holder and reduced by any amortized premium and any cash payments on the
note other than qualified stated interest. Upon the sale, exchange or retirement
of a note, a U.S. holder will recognize gain or loss equal to the difference
between the amount realized upon the sale, exchange or retirement (less any
accrued but unpaid qualified stated interest) and the adjusted tax basis of the
note. Except as described above with respect to certain short-term original
issue discount notes or with respect to market discount, such gain or loss will
be capital gain or loss and will be long-term capital gain or loss if at the
time of sale, exchange or retirement the note has been held for more than one
year. Under current law, net capital gains of individuals are, under certain
circumstances, taxed at lower rates than items of ordinary income. The
deductibility of capital losses is subject to limitations.

EXTENSION OF MATURITY, OPTIONAL REDEMPTION AND OPTIONAL REPAYMENT

     If so specified in an applicable pricing supplement relating to a note, we
may have the option to extend the maturity of a note. See "Description of
Notes -- Extension of Maturity." The treatment of a U.S. holder of notes with
respect to which such an option has been exercised may depend, in part, on the
terms established for such notes by Firstar pursuant to the exercise of such
option (the "REVISED TERMS"). Such U.S. holder may be treated for United States
federal income tax purposes as having exchanged such notes (the "OLD NOTES") for
new notes with the revised terms (the "NEW NOTES"). If the exercise of the
option by us is not treated as an exchange of old notes for new notes, no gain
or loss will be recognized by a U.S. holder as a result thereof. If the exercise
of the option is treated as a taxable exchange of old notes for new notes, a
U.S. holder would generally recognize gain or loss equal to the difference
between the issue price of the new notes and the holder's tax basis in the old
notes.

     If so specified in an applicable pricing supplement relating to a note, we
may have the right to redeem the note prior to its stated maturity date, and the
holder may have the right to elect repayment of the note prior to its stated
maturity date. See "Description of Notes -- Optional Redemption, Repayment and
Repurchase."

     The presence of such options may also affect the calculation of OID, among
other things. The OID Regulations provide that, solely for purposes of the
accrual of OID, an issuer of a debt instrument having an option or combination
of options to extend the term of the debt instrument or to redeem the debt
instrument prior to its stated maturity date will be presumed to exercise such
option or options in the
                                      S-26
<PAGE>   28

manner that minimizes the yield on the debt instrument. Conversely, a holder
having an option to elect repayment of the debt instrument prior to its stated
maturity date or a combination of such options will be presumed to exercise such
option or options in a manner that maximizes the yield on the debt instrument.
If the exercise of such option or options to extend the term of the debt
instrument, to redeem the debt instrument prior to its stated maturity date or
to elect repayment of the debt instrument prior to its stated maturity date
actually occurs or does not occur, contrary to the presumption made under the
OID Regulations (a "CHANGE OF CIRCUMSTANCES"), then, solely for purposes of the
accrual of OID, the debt instrument is treated as reissued on the date of the
change in circumstances for an amount equal to its adjusted issue price on that
date. Persons considering the purchase of notes involving an option of Firstar
to extend the stated maturity date of the notes or to redeem the notes prior to
their stated maturity date or an option of a holder to elect repayment of a note
prior to its stated maturity date should carefully examine the applicable
pricing supplement and should consult their own tax advisors regarding the
United States federal income tax consequences of the holding and disposition of
such notes.

FOREIGN CURRENCY NOTES

     The following is a summary of the principal U.S. federal income tax
consequences to a U.S. holder of the ownership of a note (a "FOREIGN CURRENCY
NOTE") denominated in a specified currency other than the U.S. dollar (a
"FOREIGN CURRENCY"). If interest payments are made in a foreign currency to a
U.S. holder that is not required to accrue such interest prior to its receipt,
such holder will be required to include in income the U.S. dollar value of the
amount received (determined by translating the foreign currency received at the
"spot rate" for such foreign currency on the date such payment is received),
regardless of whether the payment is in fact converted into U.S. dollars. No
separate exchange gain or loss is recognized with respect to the receipt of such
payment, except to the extent that such gain or loss arises on the actual
disposition of the foreign currency involved.

     A U.S. holder that is required or elects to accrue interest on a foreign
currency note prior to the receipt of such interest will be required to include
in income for each taxable year the U.S. dollar value of the interest that has
accrued during such year, determined by translating such interest at the average
rate of exchange for the period or periods during which such interest accrued.
The average rate of exchange for an interest accrual period is the simple
average of the exchange rates for each business day of such period (or such
other average that is reasonably derived and consistently applied by the
holder). A U.S. holder may elect to translate interest income at the spot rate
on the last day of the accrual period (or last day of the taxable year in the
case of an accrual period that straddles the holder's taxable year) or on the
date the interest payment is received if such date is within five days of the
end of the accrual period. Upon receipt of an interest payment on such note,
such holder will recognize ordinary income or loss in an amount equal to the
difference between the U.S. dollar value of such payment (determined by
translating any foreign currency received at the "spot rate" for such foreign
currency on the date received) and the U.S. dollar value of the interest income
that such holder has previously included in income with respect to such payment.

     OID on a note that is also a foreign currency note will be determined for
any accrual period in the applicable foreign currency and then translated into
U.S. dollars in the same manner as interest income accrued by a holder on the
accrual basis, as described above. Likewise, a U.S. holder will recognize
exchange gain or loss when the OID is paid to the extent of the difference
between the U.S. dollar value of the accrued OID (determined in the same manner
as for accrued interest) and the U.S. dollar value of such payment (determined
by translating any foreign currency received at the spot rate for such foreign
currency on the date of payment). For this purpose, all receipts on a note will
be viewed first as the receipt of any stated interest payments called for under
the terms of the note, second as receipts of previously accrued OID (to the
extent thereof), with payments considered made for the earliest accrual periods
first, and thereafter as the receipt of principal.

     The amount of market discount on foreign currency notes includible in
income will generally be determined by translating the market discount
determined in the foreign currency into U.S. dollars at the spot rate on the
date the foreign currency note is retired or otherwise disposed of. If the U.S.
holder has
                                      S-27
<PAGE>   29

elected to accrue market discount currently, then the amount which accrues is
determined in the foreign currency and then translated into U.S. dollars on the
basis of the average exchange rate in effect during such accrual period. A U.S.
holder will recognize exchange gain or loss with respect to market discount
which is accrued currently using the approach applicable to the accrual of
interest income as described above.

     Bond premium on a foreign currency note will be computed in the applicable
foreign currency. With respect to a U.S. holder that elects to amortize the
premium, the amortizable bond premium will reduce interest income in the
applicable foreign currency. At the time bond premium is amortized, exchange
gain or loss (which is generally ordinary income or loss) will be realized based
on the difference between spot rates at such times and at the time of
acquisition of the foreign currency note. A U.S. holder that does not elect to
amortize bond premium will translate the bond premium, computed in the
applicable foreign currency, into U.S. dollars at the spot rate on the maturity
date and such bond premium will constitute a capital loss which may be offset or
eliminated by exchange gain.

     A U.S. holder's tax basis in a foreign currency note will be the U.S.
dollar value of the foreign currency amount paid for such foreign currency note
determined at the time of such purchase (or, as discussed below, determined on
the settlement date for such purchase in the case of a publicly-traded foreign
currency note). A U.S. holder that purchases a note with previously owned
foreign currency will recognize exchange gain or loss at the time of purchase
attributable to the difference at the time of purchase, if any, between his tax
basis in such foreign currency and the fair market value of the note in U.S.
dollars on the date of purchase (or settlement). Such gain or loss will be
ordinary income or loss.

     For purposes of determining the amount of any gain or loss recognized by a
U.S. holder on the sale, exchange, retirement or other disposition of a foreign
currency note, the amount realized upon such sale, exchange, retirement or other
disposition will be the U.S. dollar value of the amount realized in foreign
currency (other than amounts attributable to accrued but unpaid interest not
previously included in the holder's income), determined at the time of the sale,
exchange, retirement or other disposition.

     A U.S. holder will recognize exchange gain or loss attributable to the
movement in exchange rates between the time of purchase and the time of
disposition (including the sale, exchange, retirement or other disposition) of a
foreign currency note. Such gain or loss will be treated as ordinary income or
loss. The realization of such gain or loss will be limited to the amount of
overall gain or loss realized on the disposition of a foreign currency note.

     A U.S. holder's tax basis in foreign currency received as interest on (or
OID with respect to), or received on the sale, exchange, retirement or other
disposition of, a foreign currency note will be the U.S. dollar value thereof at
the spot rate at the time the holder received such foreign currency. Regulations
issued under Section 988 of the Code provide a special rule for purchases and
sales of publicly-traded foreign currency notes by a cash method taxpayer, under
which units of foreign currency paid or received are translated into dollars at
the spot rate on the settlement date of the purchase or sale. Accordingly, no
foreign currency gain or loss will result from currency fluctuations between the
trade date and the settlement date of such a purchase or sale. An accrual method
taxpayer may elect the same treatment required of cash method taxpayers with
respect to the purchase and sale of publicly-traded foreign currency notes,
provided that the election is applied consistently. Such election cannot be
changed without the consent of the IRS. Any gain or loss recognized by a U.S.
holder on a sale, exchange or other disposition of foreign currency will be
ordinary income or loss and will not be treated as interest income or expense,
except to the extent provided in regulations promulgated by the U.S. Department
of the Treasury or administrative pronouncements of the IRS.

INDEXED NOTES

     The tax treatment of a U.S. holder of an indexed note will depend on
factors including the specific index or indices used to determine indexed
payments on the note and the amount and timing of any contingent payments of
principal and interest. Persons considering the purchase of indexed notes should

                                      S-28
<PAGE>   30

carefully examine the applicable pricing supplement and should consult their own
tax advisors regarding the U.S. federal income tax consequences of the holding
and disposition of such notes.

NON-U.S. HOLDERS

     Under present U.S. federal income and estate tax law, and subject to the
discussion below concerning backup withholding:

          (a) no withholding of U.S. federal income tax will be required with
     respect to the payment by us or any paying agent (in its capacity as such)
     of principal, premium (if any) or interest (which for purposes of this
     discussion includes OID) on a note owned by a Non-U.S. holder, provided
     that

             (1) such Non-U.S. holder does not actually or constructively own
        10% or more of the total combined voting power of all of our classes of
        stock entitled to vote within the meaning of section 871(h)(3) of the
        Code and the regulations thereunder,

             (2) such Non-U.S. holder is not a controlled foreign corporation
        that is related to us through stock ownership,

             (3) such Non-U.S. holder is not a bank whose receipt of interest on
        a note is described in section 881(c)(3)(A) of the Code,

             (4) the statement described below has been provided by or with
        respect to the beneficial owner and

             (5) such interest is not contingent interest within the meaning of
        section 871(h)(4)(A) of the Code and the regulations thereunder;

          (b) no withholding of U.S. federal income tax will be required with
     respect to any gain or income realized by a Non-U.S. holder upon the sale,
     exchange or retirement of a note; and

          (c) a note beneficially owned by an individual who at the time of
     death is a Non-U.S. holder will not be subject to U.S. federal estate tax
     as a result of such individual's death, provided that such individual does
     not actually or constructively own 10% or more of the total combined voting
     power of all of our classes of stock entitled to vote within the meaning of
     section 871(h)(3) of the Code and provided that the interest payments with
     respect to such note would not have been, if received at the time of such
     individual's death, effectively connected with the conduct of a U.S. trade
     or business by such individual.

     To qualify for the exemption from withholding tax referred to in (a) above,
the beneficial owner of such note, or a financial institution holding the note
on behalf of such owner, must provide, in accordance with specified procedures,
a paying agent of ours with a statement to the effect that the beneficial owner
is not a U.S. person, citizen or resident. Pursuant to current temporary
Treasury Regulations, which generally apply to payments on a note on or before
December 31, 1999, these requirements will be met if (1) the beneficial owner
provides his name and address, and certifies, under penalties of perjury, that
he is not a U.S. person, citizen or resident (which certification may be made on
an Internal Revenue Service Form W-8 (or successor form)) or (2) a financial
institution holding the note on behalf of the beneficial owner certifies, under
penalties of perjury, that such statement has been received by it and furnishes
a paying agent with a copy thereof. On October 6, 1997, the Treasury Department
issued final regulations relating to withholding tax, information reporting and
backup withholding that unify current certification procedures and forms and
clarify reliance standards (the "FINAL REGULATIONS"). The Final Regulation,
which generally apply to payments on a note after December 31, 1999, provide
alternative methods for satisfying the certification requirement described
above.

     Payments of premium, if any, and interest (including OID) to Non-U.S.
holders not meeting the requirements of paragraph (a) above will be subject to a
30% withholding unless the beneficial owner of the note provides us with a
properly executed (1) Internal Revenue Service Form 1001 (or successor form)
claiming an exemption from or reduction in withholding under the benefit of a
tax treaty or

                                      S-29
<PAGE>   31

(2) Internal Revenue Service Form 4224 (or successor form) stating that interest
paid on the note is not subject to withholding tax because it is effectively
connected with the owner's conduct of a trade or business in the United States.

     If a Non-U.S. holder is engaged in a trade or business in the United States
and premium, if any, or interest (including OID) on the note is effectively
connected with the conduct of such trade or business, the Non-U.S. holder,
although exempt from the withholding tax discussed above, will be subject to
U.S. federal income tax on such interest and OID on a net income basis in the
same manner as if it were a U.S. holder. In addition, if such holder is a
foreign corporation, it may be subject to a branch profits tax equal to 30% of
its effectively connected earnings and profits for the taxable year, subject to
adjustments. For this purpose, such premium, if any, and interest (including
OID) on a note will be included in such foreign corporation's earnings and
profits.

     Any gain or income realized upon the sale, exchange, retirement or other
disposition of a note generally will not be subject to U.S. federal income tax
unless (a) such gain or income is effectively connected with a trade or business
in the United States of the Non-U.S. holder, or (b) in the case of a Non-U.S.
holder who is an individual, such individual is present in the United States for
183 days or more in the taxable year of such sale, exchange, retirement or other
disposition, and certain other conditions are met.

BACKUP WITHHOLDING AND INFORMATION REPORTING

     In general, information reporting requirements will apply to certain
payments of principal, interest, OID and premium paid on notes and to the
proceeds of a sale of a note made to U.S. holders other than certain exempt
recipients (such as corporations). Backup withholding at a 31% rate will apply
to such payments if the U.S. holder fails to provide a taxpayer identification
number or certification of foreign or other exempt status or fails to report in
full dividend and interest income.

     No information reporting or backup withholding will be required with
respect to payments made by us or any paying agent to Non-U.S. holders if a
statement described in (a)(4) under "-- Non-U.S. holders" has been received and
the payor does not have actual knowledge (and, with respect to payments made
after December 31, 1999, does not have reason to know) that the beneficial owner
is a U.S. person.

     In addition, backup withholding and information reporting will not apply if
payments of the principal, interest, OID or premium on a note is paid or
collected by a foreign office of a custodian, nominee or other foreign agent on
behalf of the beneficial owner of such note, or if a foreign office of a broker
(as defined in applicable Treasury Regulations) pays the proceeds of the sale of
a note to the owner thereof. If, however, such nominee, custodian, agent or
broker is, for U.S. federal income tax purposes, a U.S. person, a controlled
foreign corporation, a foreign person that derives 50% or more of its gross
income for certain periods from the conduct of a trade or business in the United
States, or, in the case of payments made after December 31, 1999, a foreign
partnership at least 50 percent of the capital or profits interests of which are
owned by U.S. persons or that is engaged in the conduct of a United States trade
or business. Such payment will not be subject to backup withholding but may be
subject to information reporting.

     Payments of principal, interest, OID and premium on a note paid to the
beneficial owner of a note by a U.S. office of a custodian, nominee or agent, or
the payment by the U.S. office of a broker of the proceeds of sale of a note,
will be subject to both backup withholding and information reporting unless the
beneficial owner provides a statement described in (a)(4) above and the payor
does not have actual knowledge that the beneficial owner is a U.S. person (and,
with respect to payments made after December 31, 1999, does not have reason to
know) or the beneficial owner otherwise establishes an exemption.

     Any amounts withheld under the backup withholding rules will be allowed as
a refund or a credit against such holder's U.S. federal income tax liability
provided the required information is furnished to the IRS.

                                      S-30
<PAGE>   32

                              PLAN OF DISTRIBUTION

     We are offering the notes for sale on a continuing basis through Merrill
Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith and (our "AGENTS"), who will
purchase the notes, as principal, from us, for resale to investors and other
purchasers at varying prices relating to prevailing market prices at the time of
resale as determined by the Agents, or, if so specified in an applicable pricing
supplement, for resale at a fixed public offering price. Unless otherwise
specified in an applicable pricing supplement, any note sold to the agent as
principal will be purchased by the Agents at a price equal to 100% of the
principal amount of the note less a percentage of the principal amount equal to
the commission applicable to an agency sale as described below of a note of
identical maturity. If agreed to by us and the Agents, the Agents may utilize
their reasonable efforts on an agency basis to solicit offers to purchase the
notes at 100% of the principal amount of the notes, unless otherwise specified
in an applicable pricing supplement. We will pay a commission to the Agents,
ranging from           to           % of the principal amount of a note,
depending upon its stated maturity or, with respect to a Note for which the
stated maturity is in excess of 30 years, a commission as agreed upon by us and
the Agents at the time of sale.

     The Agents may sell notes they have purchased from us as principal to other
dealers for resale to investors, and may allow any portion of the discount
received in connection with such purchases from us to such dealers. After the
initial public offering of notes, the public offering price, in the case of
notes to be resold at a fixed public offering price, the concession and the
discount allowed to dealers may be changed.

     We reserve the right to withdraw, cancel or modify the offer made by this
prospectus supplement without notice and may reject orders, in whole or in part,
whether placed directly with us or through the Agents. The Agents will have the
right, in their discretion reasonably exercised, to reject in whole or in part
any offer to purchase notes received by the Agents. Unless otherwise specified
in an applicable pricing supplement, payment of the purchase price of the notes
will be required to be made in immediately available funds in U.S. dollars or
such other specified currency, as the case may be, in New York City on the date
of settlement. No note will have an established trading market when issued.
Unless specified in the applicable pricing supplement, we will not list the
notes on any securities exchange. The Agents may from time to time purchase and
sell notes in the secondary market, but the Agents are not obligated to do so,
and there can be no assurance that there will be a secondary market for the
notes or liquidity in the secondary market if one develops. From time to time,
the Agents may make a market in the notes.

     The Agents may be deemed to be "underwriters" within the meaning of the
Securities Act. We have agreed to indemnify the Agents against or to make
contributions relating to certain civil liabilities, including liabilities under
the Securities Act, or to contribute to payments the Agents may be required to
make in respect thereof. We have agreed to reimburse the Agents for certain
expenses.

     From time to time, we may issue and sell other securities described in the
accompanying prospectus, and the amount of notes that we may offer and sell
under this prospectus supplement may be reduced as a result of such sales.

     In connection with the offering of notes purchased by the Agents as
principal on a fixed price basis, the Agents are permitted to engage in certain
transactions that stabilize the price of the notes. These transactions may
consist of bids or purchases for the purpose of pegging, fixing or maintaining
the price of the notes. If the Agents create a short position in the notes in
connection with the offering, i.e., if they sell notes in an aggregate principal
amount exceeding that set forth in the applicable pricing supplement, then the
Agents may reduce that short position by purchasing notes in the open market. In
general, purchases of notes for the purpose of stabilization or to reduce a
short position could cause the price of the notes to be higher than in the
absence of these purchases.

     Neither we nor the Agents make any representation or prediction as to the
direction or magnitude of any effect that the transactions described above may
have on the price of the notes. In addition, neither we nor the Agents make any
representation that the Agents will engage in any such transactions or that such
transactions, once commenced, will not be discontinued without notice.

     The distribution of the notes will conform to the requirements set forth in
the applicable sections of Rule 2720 of the Conduct Rules of the NASD.

                                      S-31
<PAGE>   33

                             SUBJECT TO COMPLETION
                   PRELIMINARY PROSPECTUS DATED JUNE 4, 1999

FIRSTAR CORPORATION
                                                                  [FIRSTAR LOGO]

                                 $1,000,000,000

                       DEBT SECURITIES AND DEBT WARRANTS
                 PREFERRED SHARES AND PREFERRED SHARE WARRANTS
                               DEPOSITARY SHARES
                     COMMON STOCK AND COMMON STOCK WARRANTS
                                     UNITS

                             ----------------------

     We may offer and sell from time to time:

     - debt securities;

     - warrants to purchase debt securities;

     - preferred shares;

     - warrants to purchase preferred shares;

     - fractions of preferred shares represented by depositary receipts;

     - common stock;

     - warrants to purchase common stock; and

     - units consisting of one or more of these securities.

     We will provide the specific terms of each series or issue of securities we
issue in supplements to this prospectus. You should read this prospectus and the
supplements carefully before you invest. We may only use this prospectus to
offer and sell our securities if it is accompanied by a prospectus supplement.

     We may offer the securities directly or through underwriters, agents or
dealers. The applicable prospectus supplement will designate the terms of that
plan of distribution.

     OUR DEBT SECURITIES ARE OUR UNSECURED OBLIGATIONS AND ARE NOT SAVINGS
ACCOUNTS, DEPOSITS OR OTHER OBLIGATIONS OF ANY OF OUR BANKS OR NONBANK
SUBSIDIARIES. OUR DEBT SECURITIES ARE NOT INSURED BY THE FEDERAL DEPOSIT
INSURANCE CORPORATION, THE BANK INSURANCE FUND OR ANY OTHER GOVERNMENTAL AGENCY.
THIS PROSPECTUS MAY NOT BE USED TO SELL SECURITIES UNLESS ACCOMPANIED BY A
PROSPECTUS SUPPLEMENT.

     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS OR ANY PROSPECTUS SUPPLEMENT IS TRUTHFUL OR COMPLETE. ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

               THE DATE OF THIS PROSPECTUS IS             , 1999.
<PAGE>   34

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
Firstar.....................................................    2
Where You Can Find More Information.........................    2
Use of Proceeds.............................................    4
Ratios of Earnings to Fixed Charges and to Combined Fixed
  Charges and Preferred Stock Dividends.....................    4
Certain Regulatory Matters..................................    5
Description of Debt Securities..............................   10
Description of Preferred Shares.............................   23
Description of Depositary Shares............................   28
Description of Common Stock.................................   31
Description of Securities Warrants..........................   32
European Monetary Union.....................................   36
Plan of Distribution........................................   37
Validity of Securities......................................   37
Experts.....................................................   37
Forward-Looking Statements..................................   38
</TABLE>

                                        1
<PAGE>   35

                                    FIRSTAR

     Firstar Corporation ("FIRSTAR") is the organization created by the merger
of Star Banc Corporation and Firstar Corporation ("OLD FIRSTAR CORPORATION") on
November 20, 1998. We are a regional, multi-state bank holding company
headquartered in Milwaukee, Wisconsin. We own 100 percent of the capital stock
of eight bank subsidiaries having over 700 banking offices in Wisconsin, Ohio,
Iowa, Minnesota, Illinois, Indiana, Kentucky, Tennessee and Arizona. We also own
various nonbank and limited purpose bank subsidiaries engaged in related
financial services.

     We provide banking services throughout the midwestern United States. All of
our banking subsidiaries other than Firstar Bank, N.A. were part of old Firstar
Corporation. Our banks provide a broad range of financial services for companies
based in its market region, national business organizations, governmental
entities and individuals. These commercial and consumer banking activities
include accepting demand, time and savings deposits; making both secured and
unsecured business and personal loans; and issuing and servicing credit cards.
Our banks also engage in correspondent banking and provide a full range of trust
and investment management services to individual and corporate customers. We
also provide international banking services consisting of foreign trade
financing, issuance and confirmation of letters of credit, funds collection and
foreign exchange transactions. Our nonbank subsidiaries provide retail brokerage
services, trust and investment management services, residential mortgage
banking, consumer financing, title insurance, business insurance, consumer and
credit related insurance, and corporate operational services.

     Our operations include three primary business segments: consumer banking,
wholesale banking, and trust and private banking.

     Our principal executive offices are located at 777 East Wisconsin Avenue,
Milwaukee, Wisconsin 53202, and the telephone number is (414) 765-4321.

     Additional information about Firstar is included in the documents
incorporated by reference in this document. See "Where You Can Find More
Information."

                      WHERE YOU CAN FIND MORE INFORMATION

     We file annual, quarterly and current reports, proxy statements and other
information with the Securities and Exchange Commission (the "COMMISSION"). Our
Commission filings are available to the public over the internet at the
Commission's web site at http://www.sec.gov. You may also read and copy any
document we file at the Commission's public reference rooms in Washington, D.C.,
New York, New York and Chicago, Illinois. Please call the Commission at
1-800-SEC-0330 for further information on the public reference rooms and their
copy charges. Our common stock, par value $.01 per share ("COMMON STOCK") is
listed on the New York Stock Exchange, Inc. (the "NYSE"). You can obtain
information about us from the NYSE at 20 Broad Street, New York, New York 10005.

     The Commission allows us to "incorporate by reference" the information we
file with the Commission, which means that we can disclose important information
to you by referring you to those documents. The information incorporated by
reference is an important part of this prospectus, and information that we file
later with the Commission will automatically update and supersede this
information. We incorporate by reference the documents listed below and any
future filings made with the Commission under Sections 13(a), 13(c), 14, or
15(d) of the Securities and Exchange Act of 1934, as amended (the "EXCHANGE
ACT") until we, or our agents, sell all of the securities offered under this
prospectus:

     - Annual Report on Form 10-K for the year ended December 31, 1998;

     - Quarterly Report on Form 10-Q for the quarter ended March 31, 1999;

     - Current Reports on Form 8-K filed on March 16, 1999 (as amended on April
       2, 1999), May 4, 1999 (as amended on May 19, 1999) and May 20, 1999;

                                        2
<PAGE>   36

     - The description of the common stock contained in our Form 8-A dated
       August 5, 1971, as amended; and

     - The description of the preferred share purchase rights (the "PREFERRED
       STOCK PURCHASE RIGHTS") issued pursuant to the Rights Agreement, dated as
       of November 23, 1998, between Firstar and Firstar Bank Milwaukee N.A., as
       rights agent (the "RIGHTS AGREEMENT") and described in our Registration
       Statement on Form 8-A dated December 1, 1998 and any amendment or report
       filed for the purpose of updating such description.

     This prospectus is part of a registration statement that we filed with the
Commission utilizing a "shelf" registration process. Under this shelf
registration process, we may sell any combination of the securities described in
this prospectus (referred to from time to time in this document as the "OFFERED
SECURITIES") in one or more offerings up to a total dollar amount of
$1,000,000,000. This prospectus provides you with a general description of the
securities we may offer. As permitted by Commission rules, this prospectus does
not contain all of the information included in the registration statement and
the accompanying exhibits and schedules we file with the Commission. Each time
we sell securities, we will provide a prospectus supplement that will contain
specific information about the terms of that offering. The prospectus supplement
may also add, update or change information contained in this prospectus. You
should read both this prospectus and any prospectus supplement together with the
registration statement, the exhibits and schedules for more information about us
and our securities.

     Unless otherwise indicated or unless the context requires otherwise, all
references in this prospectus to "we," "us," "our" or similar references mean
Firstar Corporation and its subsidiaries.

     We will provide a copy of any or all of the reports or documents
incorporated by reference (other than exhibits, unless such exhibits are
specifically incorporated by reference in such documents), without charge, to
any person who makes a written or oral request to us for such material. You
should send your written request for such material to David M. Moffett, Chief
Financial Officer, Firstar Corporation, 777 East Wisconsin Avenue, Milwaukee,
Wisconsin 53202. Telephone requests may be directed to 414-765-4518.
                             ----------------------

     Unless otherwise indicated, currency amounts in this prospectus and any
prospectus supplement are stated in United States dollars ("$," "dollars," "U.S.
dollars," or "U.S. $").

                                        3
<PAGE>   37

                                USE OF PROCEEDS

     Unless otherwise specified in an applicable prospectus supplement, we will
use the net proceeds we receive from the sale of the securities offered by this
prospectus and the accompanying prospectus supplement for general corporate
purposes, including investments in or advances to existing or future
subsidiaries, repayment of maturing obligations, and redemption of outstanding
indebtedness. Pending such use, we may temporarily invest the net proceeds or
use them to reduce short-term indebtedness.

              RATIOS OF EARNINGS TO FIXED CHARGES AND TO COMBINED
                  FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

     Our consolidated ratios of earnings to fixed charges and our ratio of
earnings to combined fixed charges and preferred stock dividends for each of the
years in the five-year period ended December 31, 1998 and for the quarterly
period ended March 31, 1999 are as follows:

<TABLE>
<CAPTION>
                                            THREE
                                           MONTHS
                                            ENDED           FISCAL YEAR ENDED DECEMBER 31,
                                          MARCH 31,    -----------------------------------------
                                            1999       1998     1997     1996     1995     1994
                                          ---------    -----    -----    -----    -----    -----
<S>                                       <C>          <C>      <C>      <C>      <C>      <C>
Ratio of Earnings to Fixed Charges:
  Excluding interest on deposits........    4.25x      2.90x    3.65x    3.46x    3.10x    4.11x
  Including interest on deposits........    1.88x      1.51x    1.70x    1.60x    1.55x    1.75x
Ratio of Earnings to Combined Fixed
  Charges and Preferred Stock Dividends:
  Excluding interest on deposits........    4.25x      2.90x    3.64x    3.45x    3.09x    4.08x
  Including interest on deposits........    1.88x      1.51x    1.70x    1.60x    1.55x    1.75x
</TABLE>

     The consolidated ratio of earnings to fixed charges is computed by dividing
income before income taxes plus fixed charges less capitalized interest by fixed
charges. The consolidated ratio of earnings to combined fixed charges and
preferred stock dividends is computed by dividing income before income taxes
plus fixed charges less capitalized interest by fixed charges and pretax
earnings required to cover preferred stock dividends. Fixed charges, excluding
interest on deposits, consist of interest on short-term borrowings and long-term
debt, amortization of debt expense, capitalized interest and one-third of net
rental expense (which is deemed representative of the interest factor). Fixed
charges, including interest on deposits, consist of the foregoing items plus
interest on deposits. Pretax earnings required to cover preferred stock
dividends have been computed by dividing preferred stock dividends by one minus
our effective income tax rate.

                                        4
<PAGE>   38

                           CERTAIN REGULATORY MATTERS

GENERAL

     As a bank holding company, we are subject to supervision and examination by
the Board of Governors of the Federal Reserve System (the "FEDERAL RESERVE
BOARD"). Under the Bank Holding Company Act of 1956, as amended (the "BHCA"), a
bank holding company generally may not, directly or indirectly, acquire the
ownership or control of more than 5% of the voting securities or all or
substantially all of the assets of any company, including a bank, without the
prior approval of (or, in the case of certain non-bank companies, prior notice
to) the Federal Reserve Board. In addition, under the BHCA, a bank holding
company is generally prohibited from engaging in nonbanking activities.
Proposals to change the laws and regulations governing the banking industry are
frequently raised in Congress, in the state legislatures and before the various
bank regulatory agencies. The likelihood and timing of any changes and the
impact such changes might have on our banks and their affiliates are difficult
to determine.

     Our banks are subject to supervision and examination by applicable U.S.
federal and state banking agencies. Our bank subsidiaries with national charters
are primarily regulated by the Office of the Comptroller of the Currency (the
"OCC"). Our subsidiary banks with state charters are supervised and examined by
their respective state banking agencies and either by the Federal Reserve Board
(if a member bank of the Federal Reserve System) or by the Federal Deposit
Insurance Corporation (the "FDIC") if a nonmember. The deposits of our banks are
primarily insured by the Bank Insurance Fund (the "BIF") and certain deposits of
our banks are insured by the Savings Association Insurance Fund (the "SAIF");
for that reason, all of our banks are also subject to regulation by the FDIC.
Our banks are also affected by the fiscal and monetary policies of the federal
government and its agencies, including the Federal Reserve Board. An important
purpose of these policies is to curb inflation and control recessions through
control of the supply of money and credit. The Federal Reserve Board uses its
powers to establish reserve requirements of insured depository institutions, to
set the discount rate on its extensions of credit to insured depository
institutions and to conduct open market operations in U.S. government securities
so as to influence the supply of money and credit. These policies have a direct
effect on the amount of bank loans and deposits and on the interest rates
charged on loans and paid on deposits, with the result that federal policies
have a material effect on bank earnings. Future policies of the Federal Reserve
Board and other authorities cannot be predicted nor can their effect on the
future earnings of our banks be predicted.

     To the extent that the following information describes statutory or
regulatory provisions, it is qualified in its entirety by reference to such
statutory or regulatory provisions.

DIVIDEND RESTRICTIONS

     Various U.S. federal and state statutory provisions limit the amount of
dividends that our banking subsidiaries can pay to us without regulatory
approval. The approval of applicable U.S. federal bank regulatory agencies is
required for the payment of any dividend if the total of all dividends declared
in any calendar year would exceed the total of the institution's net profits, as
defined by those regulatory agencies, for that year combined with its retained
net profits for the preceding two years. In addition, a national bank may not
pay a dividend in an amount greater than its net profits then on hand. The
payment of dividends by the banking subsidiaries may also be affected by other
factors, such as the maintenance of adequate capital.

     Under these provisions our banks could have declared, as of March 31, 1999,
aggregate dividends of at least $143.6 million, without obtaining prior
regulatory approval and without reducing the capital of our banks below "well
capitalized" minimum regulatory levels.

     In addition, if, in the opinion of the applicable U.S. federal bank
regulatory agency, a depository institution under its jurisdiction is engaged in
or is about to engage in an unsafe and unsound practice (which, depending on the
financial condition of the institution, could include the payment of dividends),
such agency may require, after notice and hearing, that the institution in
question cease and desist from
                                        5
<PAGE>   39

such practice. The OCC has indicated that paying dividends that would deplete a
depository institution's capital base to an inadequate level would be an unsafe
and unsound practice. Moreover, an insured depository institution may not pay
any dividends if that payment would cause it to become undercapitalized or once
it is undercapitalized. See "-- Capital Requirements." Also, the U.S. federal
bank regulatory agencies have issued policy statements that provide that
depository institutions and their holding companies should generally pay
dividends only out of current operating earnings.

HOLDING COMPANY STRUCTURE

     We are a legal entity separate and distinct from our banking and nonbanking
subsidiaries. Accordingly, our right, and thus the rights of our creditors, to
participate in any distribution of the assets or earnings of any subsidiary
other than in our capacity as a bona fide creditor of the subsidiary is
necessarily subject to the prior satisfaction of claims of creditors of the
subsidiary. Any capital loan by us to a bank subsidiary is subordinate in right
of payment to deposits and to other indebtedness of the bank subsidiary. The
principal sources of our revenues are dividends and fees from our subsidiaries.

     There are various legal restrictions on the extent to which a bank holding
company, such as Firstar, and certain of its nonbank subsidiaries can borrow or
otherwise obtain credit from their bank subsidiaries. In general, these
restrictions require that any extensions of credit must be on non-preferential
terms and fully secured by designated amounts of specified collateral. These
restrictions also limit any holding company or its nonbank subsidiaries to 10%
of the lending bank's capital stock and surplus, and all of the holding
company's nonbank subsidiaries to 20% of the lending bank's capital stock and
surplus in the aggregate.

     Under Federal Reserve Board policy, a bank holding company is expected to
act as a source of financial and managerial strength to its subsidiary banks and
to commit resources to support its subsidiary banks. This support may be
required at times when we may not have the resources to provide it. Consistent
with the policy regarding bank holding companies serving as a source of
financial strength for their subsidiary banks, the Federal Reserve Board has
stated that, as a matter of prudent banking, a bank holding company generally
should not maintain a rate of cash dividends unless its net income available to
common shareholders has been sufficient to fully fund such dividend rate, and
the prospective rate of earnings retention appears consistent with the bank
holding company's capital needs, asset quality and overall financial condition.
In addition, in the event of a bank holding company's bankruptcy, any commitment
by the bank holding company to a federal bank regulatory agency to maintain the
capital of a subsidiary bank will be assumed by the bankruptcy trustee and
entitled to a priority of payment.

     Moreover, a depository institution insured by the FDIC can be held liable
for any loss incurred by, or reasonably expected to be incurred by, the FDIC in
connection with:

     - the default of a commonly controlled FDIC-insured depository institution,
       or

     - any assistance provided by the FDIC to a commonly controlled FDIC-insured
       depository institution in danger of default.

"DEFAULT" is defined generally as the appointment of a conservator or receiver
and "in danger of default" is defined generally as the existence of certain
conditions indicating that a "default" is likely to occur in the absence of
regulatory assistance.

     In addition, federal law (12 U.S.C. Section 55) permits the OCC to order
the pro rata assessment of shareholders of a national bank whose capital stock
has become impaired, by losses or otherwise, to relieve a deficiency in such
national bank's capital stock. This statute also provides for the enforcement of
any pro rata assessment of shareholders of a national bank to cover such
impairment of capital stock by sale, to the extent necessary, of the capital
stock of any assessed shareholder failing to pay the assessment. As the sole
shareholder of our banks, we are subject to those provisions.

                                        6
<PAGE>   40

ACQUISITIONS

     Effective September 29, 1995, under the provisions of the Riegle-Neal
Interstate Banking and Branching Efficiency Act of 1994 (the "RIEGLE-NEAL ACT"),
we have been able to acquire banks located in any state, notwithstanding the
permissibility of those acquisitions under state law. However, those
acquisitions are subject to any state law requiring the bank being acquired to
have been organized and operating for a minimum period of time, not to exceed
five years. In addition, under the Riegle-Neal Act, bank mergers are subject to
federal and state deposit concentration limits (10% nationwide, and 30% in any
one state). State deposit concentration limit may be more or less than 30%,
depending on state law.

     The Riegle-Neal Act also permits interstate branching through interstate
bank mergers or de novo branching. Under this provision, our banks may merge
with each other or with other banks across state lines, subject to certain
restrictions. In addition, subject to state law, a bank may open branches in
states in which it does not already have branches.

CAPITAL REQUIREMENTS

     The Federal Reserve Board has issued standards for measuring capital
adequacy for bank holding companies. These standards are designed to provide
risk-responsive capital guidelines and to incorporate a consistent framework for
use by financial institutions operating in major international financial
markets. The banking regulators have issued standards for banks that are
substantially similar to the standards for bank holding companies.

     In general, the risk-related standards require banks and bank holding
companies to maintain certain capital levels based on "risk-adjusted" assets, so
that categories of assets with potentially higher credit risk will require more
capital backing than categories with lower credit risk. In addition, banks and
bank holding companies are required to maintain capital to support certain
activities which are not reflected on their balance sheets, such as loan
commitments of one year or longer.

     Under the risk-based capital standard, the minimum consolidated ratio of
total capital to risk-adjusted assets (including certain off-balance sheet
items) required by the Federal Reserve Board for bank holding companies is
currently 8%. At least one-half of the total capital, which the Federal Reserve
Board refers to as Tier 1 Capital, must be comprised of common equity, retained
earnings, qualifying noncumulative perpetual preferred stock, a limited amount
of qualifying cumulative perpetual preferred stock and a minority interest in
the equity accounts of consolidated subsidiaries, less certain items such as
goodwill and certain other intangible assets. The remainder may consist of
qualifying hybrid capital instruments, perpetual debt, mandatory convertible
debt securities, a limited amount of subordinated debt, preferred stock that
does not qualify as Tier 1 Capital, and a limited amount of loan and lease loss
reserves. As of March 31, 1999, our Tier 1 Capital and total capital to risk
adjusted assets ratios were 9.29% and 11.21%, respectively.

     In addition to the risk-based standard, the Federal Reserve Board has
established minimum leverage ratio guidelines for bank holding companies.
Similar guidelines exist for banks. These guidelines provide for a minimum ratio
of Tier 1 Capital to adjusted average total assets less goodwill and certain
other intangibles (the "LEVERAGE RATIO") of 3% for bank holding companies that
meet certain specified criteria, including having the highest regulatory rating.
Other bank holding companies generally are required to maintain a Leverage Ratio
of at least 4% to 5%.

     The guidelines also provide that bank holding companies experiencing
internal growth or making acquisitions are expected to maintain strong capital
positions substantially above the minimum supervisory levels without significant
reliance on intangible assets. Furthermore, the Federal Reserve Board has
indicated that it will consider a "tangible Tier 1 Capital Leverage Ratio"
(deducting all intangibles) and other indicators of capital strength in
evaluating proposals for expansion or new activities.

     At March 31, 1999, our consolidated Leverage Ratio was 8.07%.

                                        7
<PAGE>   41

     In December 1991, Congress enacted the Federal Deposit Insurance
Corporation Improvement Act of 1991 (the "FDICIA"), which substantially revised
the Federal Deposit Insurance Act (the "FDIA") and makes revisions to several
other federal banking statutes. Among other things, the FDICIA requires federal
banking regulators to take "prompt corrective action" in respect of FDIC-insured
depository institutions that do not meet minimum capital requirements. The
FDICIA establishes five capital tiers: "well capitalized," "adequately
capitalized," "undercapitalized," "significantly undercapitalized" and
"critically undercapitalized." Under the regulations of the applicable U.S.
federal bank regulatory agency, an FDIC-insured depository institution is
defined to be well capitalized if it maintains a leverage ratio of at least 5%,
a risk-adjusted Tier 1 capital ratio of at least 6% and a risk-adjusted total
capital ratio of at least 10% and is not subject to a directive, order or
written agreement to meet and maintain specific capital levels. An insured
depository institution is defined to be adequately capitalized if it meets all
of its minimum capital requirements as described above under "-- Capital
Requirements." An adequately capitalized institution may only accept brokered
deposits if it receives a waiver from the FDIC approval. An insured depository
institution will be considered undercapitalized if it fails to meet any minimum
required measure; it will be considered significantly undercapitalized if it has
a risk-adjusted total capital ratio of less than 6%, risk-adjusted Tier 1
capital ratio of less than 3% or a leverage ratio of less than 3%; and it will
be considered critically undercapitalized if it fails to maintain a level of
tangible equity equal to at least 2% of total assets. An insured depository
institution may be deemed to be in a capitalization category that is lower than
is indicated by its actual capital position if it receives an unsatisfactory
examination rating.

     The FDICIA generally prohibits a depository institution from making any
capital distribution (including payment of a dividend) or paying any management
fee to its holding company if the depository institution would thereafter be
undercapitalized. Undercapitalized depository institutions are subject to a wide
range of limitations on operations and activities, including growth limitations,
and are required to submit a capital restoration plan. Undercapitalized
institutions may not accept brokered deposits. The depository institution's
parent holding company must guarantee that the institution will comply with the
capital restoration plan. The parent holding company's obligations under that
guarantee would take priority over the claims of unsecured creditors in the
event of the parent holding company's bankruptcy. The aggregate liability of the
parent holding company is limited to the lesser of (a) an amount equal to 5% of
the depository institution's total assets at the time it became undercapitalized
and (b) the amount which is necessary (or would have been necessary) to bring
the institution into compliance with all capital standards applicable with
respect to that institution as of the time it fails to comply with the plan. If
a depository institution fails to submit an acceptable plan, it is treated as if
it were significantly undercapitalized.

     Significantly undercapitalized depository institutions may be subject to a
number of requirements and restrictions, including orders to sell sufficient
voting stock to become adequately capitalized, requirements to reduce total
assets, and cessation of receipt of deposits from correspondent banks.
Critically undercapitalized institutions may not, beginning 60 days after
becoming critically undercapitalized, make any payment of principal or interest
on their subordinated debt. In addition, critically undercapitalized
institutions are subject to the appointment of a receiver or conservator.

     The Federal Reserve Board and the other U.S. federal banking agencies are
also required by regulation to take into account risks stemming from
non-traditional activities, such as credit risk, as well as interest rate risk,
in considering the capital adequacy of an institution. Bank holding companies
and banks with substantial trading exposure are also required to hold capital
based on their exposure to market risk.

     Based on the above criteria and our bank subsidiaries' capital ratios as of
March 31, 1999, each of our bank subsidiaries qualifies as "well capitalized"
under FDICIA and the applicable prompt corrective action regulations. The
terminology used in FDICIA and the prompt corrective action regulations, as
described above, should not necessarily be viewed as describing the condition or
prospects of any depository institutions, including our bank subsidiaries.

                                        8
<PAGE>   42

FDIC INSURANCE

     Our banks are subject to FDIC deposit insurance assessments. The FDIC has
adopted a risk-based premium schedule. Each financial institution is assigned to
one of three capital groups: "well capitalized," "adequately capitalized" or
"undercapitalized". Each financial institution is further assigned to one of
three subgroups within a capital group on the basis of supervisory evaluations
by the institution's primary U.S. federal and, if applicable, state supervisors,
and on the basis of other information relevant to the institution's financial
condition and the risk posed to the applicable insurance fund. The FDIC may
modify the assessment rate for each category semiannually. A significant
increase in assessment rates could have a material impact on us.

DEPOSITOR PREFERENCE

     Under the FDICIA, claims of holders of domestic deposits and a number of
claims for administrative expenses and employee compensation against an
FDIC-insured depository institution have priority over other general unsecured
claims against the institution in the "liquidation or other resolution" of the
institution by a receiver.

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<PAGE>   43

                         DESCRIPTION OF DEBT SECURITIES

     This section describes the general terms and provisions of the debt
securities. Each time we offer debt securities, we will describe in a prospectus
supplement, and possibly a pricing supplement, the specific terms of that
particular offering.

     We may from time to time offer to sell debt securities, consisting of
unsecured debt securities, which may be senior (the "SENIOR SECURITIES") or
subordinated (the "SUBORDINATED SECURITIES," and, together with the senior
securities, the "DEBT SECURITIES").

     We will issue the senior debt securities under an indenture (the "SENIOR
INDENTURE"), between Firstar and                     , as trustee (the "SENIOR
TRUSTEE"). We will issue the Subordinated Securities under an indenture (the
"SUBORDINATED INDENTURE"), between Firstar and                     , as trustee
(the "SUBORDINATED TRUSTEE" and, together with the Senior Trustee, the
"TRUSTEES"). A form of each of the Senior Indenture and the Subordinated
Indenture (collectively, the "INDENTURES") is attached as an exhibit to the
registration statement.

     The Indentures are contracts between us and the Trustees. If we default on
the debt securities, the Trustee has the power to enforce your rights against
us. In addition, the Trustee performs administrative duties on our behalf, such
as sending you interest payments and transferring your debt securities to a new
purchaser.

     We have summarized selected provisions of the Indentures below. Because
this is only a summary, it is not complete and does not describe every aspect of
the debt securities. Numerical references in parentheses below are to sections
of the Indentures. Wherever we refer to particular sections or defined terms of
the Indentures, we intend that such sections or defined terms be incorporated in
this document by reference. Unless otherwise indicated, capitalized terms have
the meanings ascribed to them in the Indentures.

     We are a bank holding company, and our right to participate as a
shareholder in any distribution of assets of any subsidiary upon its liquidation
or reorganization or winding-up is subject to the prior claims of creditors of
that subsidiary. Consequently, the ability of the holders of the debt securities
to benefit, as our creditors, from any distributions is also subject to these
prior claims. Our banks are subject to claims by creditors for long-term and
short-term debt obligations, including deposit liabilities, obligations for
federal funds purchased and securities sold under repurchase agreements. There
are also various legal limitations on the extent to which our banks may pay
dividends or otherwise supply funds to us or our affiliates. See "Certain
Regulatory Matters."

GENERAL

     Each Indenture permits us to issue debt securities from time to time in an
unlimited amount in one or more series. (Section 301)

     The senior debt securities will be unsecured and will rank pari passu with
our other unsecured indebtedness. The subordinated debt securities will be
unsecured and will rank pari passu with our other subordinated debt, and,
together with that other subordinated debt, will be subordinated and junior in
right of payment to the prior payment in full of our senior debt.

     A prospectus supplement for a specific series of offered debt securities
will describe the specific terms of those offered debt securities. That
prospectus supplement will address some or all of the following:

     - the title and type and any limit on the aggregate principal amount of the
       debt securities;

     - the price (expressed as a percentage of the aggregate principal amount)
       at which the debt securities will be issued;

     - the date or dates on which the debt securities will mature or method by
       which those dates can be determined and the dates on which premiums, if
       any, will be payable;

                                       10
<PAGE>   44

     - the currency or currencies in which the debt securities are being sold
       and are denominated and the circumstances, if any, under which any debt
       securities may be payable in a currency other than the currency in which
       the debt securities are denominated and, if so, the exchange rate, the
       Exchange Rate Agent and, if the holder of any debt securities may elect
       the currency in which payments on the debt securities are to be made, the
       manner of that election;

     - the denominations in which any debt securities which are Registered
       Securities will be issuable, if other than denominations of $1,000 and
       any integral multiple of $1,000, and the denomination or denominations in
       which any debt securities which are Bearer Securities will be issuable,
       if other than the denomination of $5,000;

     - the interest rate or rates (which may be fixed or variable) for the debt
       securities, which interest rate may be zero in the case of certain debt
       securities issued at an issue price representing a discount from the
       principal amount payable at maturity;

     - the date from which interest on the debt securities will accrue, the
       dates on which interest will be payable or the method by which those
       dates can be determined, the date on which payment of interest will
       commence and the circumstances, if any, in which we may defer interest
       payments;

     - the dates on which, and the price or prices at which, the debt securities
       will, pursuant to any mandatory sinking fund provision, or may, pursuant
       to any optional redemption provision, be redeemed or repaid, and the
       other terms and provisions of any optional redemption or required
       repayment;

     - the place or places where the principal (and premium if any) and interest
       may be payable;

     - in the case of the subordinated debt securities, any terms by which those
       securities may be convertible into common stock, preferred shares or
       depositary shares, and, in the case of subordinated debt securities
       convertible into preferred shares or depositary shares, the terms of
       those preferred shares or depositary shares;

     - whether the debt securities are to be issuable as Bearer Securities
       and/or Registered Securities, and, if issuable as Bearer Securities, the
       terms upon which any Bearer Securities may be exchanged for Registered
       Securities;

     - whether the debt securities are to be issued in the form of one or more
       temporary or permanent Global Securities, and, if so, the identity of the
       depositary for the Global Security or Securities;

     - if a temporary global debt security is to be issued with respect to that
       series, the extent to which, and the manner in which, any interest
       payable on an Interest Payment Date prior to the issuance of a permanent
       Global Security or definitive Bearer Securities will be credited to the
       accounts of the persons entitled to the payment on that interest payment
       date;

     - if a temporary Global Security is to be issued with respect to that
       series, the terms upon which interests in that temporary Global Security
       may be exchanged for interests in a permanent Global Security or for
       definitive debt securities of the series, and the terms upon which
       interests in a permanent Global Security, if any, may be exchanged for
       definitive debt securities of that series;

     - any additional restrictive covenants included for the benefit of Holders
       of the debt securities;

     - any additional Events of Default applicable to the debt securities;

     - information with respect to book-entry procedures, if any;

     - whether the debt securities will be repayable at the option of the
       Holder;

     - any other terms of the debt securities not inconsistent with the
       provisions of the applicable Indenture;

     - our right to defease the debt securities or certain covenants under the
       Indentures;

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<PAGE>   45

     - the Person or Persons who shall be the Security Registrar; and

     - the terms of any securities being offered together with or separately
       from the debt securities.

     The applicable prospectus supplement will also describe any special
provisions for the payment of additional amounts with respect to the debt
securities, certain U.S. federal income tax consequences, and any risk factors
or other special considerations applicable to the debt securities. If a debt
security is denominated in a foreign currency, that debt security may not trade
on a U.S. national securities exchange unless and until the Commission has
approved appropriate rule changes pursuant to the Securities Act of 1933, as
amended (the "SECURITIES ACT") to accommodate the trading of that debt security.

     Neither Indenture contains any restriction on our ability to enter into
highly leveraged transactions or any provision affording special protection to
holders of debt securities in the event we engage in a highly leveraged
transaction. Further, neither Indenture contains any provisions that would
provide protection to holders of debt securities upon a sudden and dramatic
decline in our credit quality resulting from a takeover, recapitalization or
similar restructuring.

FORM, EXCHANGE, REGISTRATION AND TRANSFER

     We may issue debt securities of a series in definitive form solely as
Registered Securities, solely as Bearer Securities or as both Registered
Securities and Bearer Securities. Unless otherwise indicated in the prospectus
supplement, Bearer Securities other than Bearer Securities in temporary or
permanent global form will have interest coupons attached. Each Indenture also
provides that we may issue Bearer Securities or Registered Securities of a
series in permanent global form. See "-- Permanent Global Securities."

     You may exchange Registered Securities of any series for other Registered
Securities of the same series of authorized denominations and of a like
aggregate principal amount, tenor and terms. In addition, if debt securities of
any series are issuable as both Registered Securities and Bearer Securities, at
your option upon receipt of a request confirmed in writing, and subject to the
terms of the applicable Indenture, you may exchange Bearer Securities (with all
unmatured coupons, except as provided below, and all matured coupons in default)
for Registered Securities of the same series of any authorized denominations and
of a like aggregate principal amount, tenor and terms. If you surrender Bearer
Securities in exchange for Registered Securities between the close of business
on a Regular Record Date or a Special Record Date and the relevant date for
payment of interest, you should surrender them without the coupon relating to
that date for payment of interest because interest will not be payable in
respect of the Registered Security issued in exchange for that Bearer Security,
but will be payable only to the Holder of that coupon when due in accordance
with the terms of the applicable Indenture. We will not issue Bearer Securities
in exchange for Registered Securities. (Section 305) Each Bearer Security, other
than a temporary global Bearer Security, and each interest coupon will bear the
following legend: "Any United States Person who holds this obligation will be
subject to limitations under the United States federal income tax laws including
the limitations provided in Sections 165(j) and 1287(a) of the Internal Revenue
Code."

     You may present debt securities for exchange as provided above, and you may
present Registered Securities for registration of transfer (duly endorsed or
accompanied by a satisfactory written instrument of transfer), at the office of
the Security Registrar or at the office of any transfer agent designated by us
for that purpose with respect to that series of debt securities, without service
charge and upon payment of any taxes and other governmental charges. (Section
305) If the applicable prospectus supplement refers to any transfer agent (in
addition to the Security Registrar) initially designated by us with respect to
any series of debt securities, we may at any time rescind the designation of
that transfer agent or approve a change in the location through which that
transfer agent (or Security Registrar) acts, except that, if debt securities of
a series are issuable solely as Registered Securities, we will be required to
maintain a transfer agent in each Place of Payment for that series and, if debt
securities of a series are issuable as Bearer Securities, we will be required to
maintain (in addition to the Security Registrar) a transfer agent in a Place of
Payment for that series located outside the United States. We may at any time
designate additional transfer agents with respect to any series of debt
securities. (Section 1002)
                                       12
<PAGE>   46

     We will not be required to:

     - issue, register the transfer of or exchange debt securities of any
       particular series to be redeemed for a period of 15 days preceding the
       first publication of the relevant notice of redemption, or, if Registered
       Securities are outstanding and there is no publication, the mailing of
       the relevant notice of redemption;

     - register the transfer of or exchange any Registered Security so selected
       for redemption in whole or in part, except the unredeemed portion of any
       Registered Security being redeemed in part; or

     - exchange any Bearer Security so selected for redemption except that you
       may exchange a Bearer Security for a Registered Security of like tenor
       and terms of that series, provided that you will be required to surrender
       that Registered Security for redemption. (Section 305)

     Additional information regarding restrictions on the issuance, exchange and
transfer of and special U.S. federal income tax considerations relating to
Bearer Securities will be set forth in the applicable prospectus supplement.

TEMPORARY GLOBAL SECURITIES

     If we specify in the applicable prospectus supplement, all or any portion
of the debt securities of a series which are issuable as Bearer Securities will
initially be represented by one or more temporary Global Securities, without
interest coupons, to be deposited with a common depositary in London for Morgan
Guaranty Trust Corporation of New York, Brussels Office, as operator of the
Euroclear System ("EUROCLEAR") and Cedel S.A. ("CEDEL") for credit to designated
accounts. On and after the date determined as provided in that temporary Global
Security and described in the applicable prospectus supplement, but within a
reasonable time, that temporary Global Security will be exchangeable for
definitive Bearer Securities, definitive Registered Securities or all or a
portion of a permanent global Bearer Security, or any combination thereof, as
specified in the applicable prospectus supplement. No definitive Bearer Security
or permanent global Bearer Security delivered in exchange for a portion of a
temporary Global Security shall be mailed or otherwise delivered to any location
in the United States in connection with that exchange. (Section 304)

     Additional information regarding restrictions on and special U.S. federal
income tax consequences relating to temporary Global Securities will be set
forth in the applicable prospectus supplement.

PERMANENT GLOBAL SECURITIES

     If any debt securities of a series are issuable in permanent global form,
the applicable prospectus supplement will describe the circumstances, if any,
under which beneficial owners of interests in that permanent Global Security may
exchange those interests for debt securities of that series and of like tenor
and principal amount of any authorized form and denomination. The principal and
any premium and interest on a permanent Global Security will be payable in the
manner described in the applicable prospectus supplement.

PAYMENTS AND PAYING AGENTS

     Unless otherwise indicated in the applicable prospectus supplement,
payments of principal of and premium, if any, and interest, if any, on Bearer
Securities will be payable in the currency designated in the prospectus
supplement, subject to any applicable laws and regulations, at paying agencies
outside the United States as we may appoint from time to time. Unless otherwise
provided in the prospectus supplement, those payments may be made, at the option
of the Holder, by a check in the designated currency or by transfer to an
account in the designated currency maintained by the payee with a bank located
outside the United States.

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<PAGE>   47

     Unless otherwise indicated in the applicable prospectus supplement, payment
of interest on Bearer Securities on any Interest Payment Date will be made only
against surrender of the coupon relating to that Interest Payment Date to a
paying agent outside the United States. (Section 1001)

     No payment with respect to any Bearer Security will be made at any office
or paying agency maintained by us in the United States nor will any such payment
be made by transfer to an account, or by mail to an address, in the United
States. Notwithstanding the foregoing, payments of principal and premium, if
any, and interest, if any, on Bearer Securities denominated and payable in U.S.
dollars will be made in U.S. dollars at an office or agency that we designate,
located in the United States, if payment of the full amount thereof in U.S.
dollars at all paying agencies outside the United States is illegal or
effectively precluded by exchange controls or other similar restrictions, and
the Trustee receives an opinion of counsel that such payment within the United
States is legal. (Section 1002)

     Unless otherwise indicated in the applicable prospectus supplement, payment
of principal and premium, if any, and interest, if any, on a Registered Security
will be payable in the currency designated in the prospectus supplement.
Interest will be payable at the office of the paying agent or paying agents we
may appoint from time to time, except that, at our option, payment of any
interest may be made by a check in the designated currency mailed to the Holder
at the Holder's registered address or by wire transfer to an account in the
currency designated by the Holder in writing not less than ten days prior to the
date of the payment. Unless otherwise indicated in the applicable prospectus
supplement, payment of any installment of interest on a Registered Security will
be made to the Person in whose name that Registered Security is registered at
the close of business on the Regular Record Date for the payments. (Section 307)
Unless otherwise indicated in the applicable prospectus supplement, principal
payable at maturity will be paid to the registered holder upon surrender of the
Registered Security at the office of a duly appointed paying agent.

     The paying agents outside the United States initially appointed by us for a
series of debt securities will be named in the applicable prospectus supplement.
We may terminate the appointment of any of the paying agents from time to time,
except that we will maintain at least one paying agent outside the United States
so long as any Bearer Securities are outstanding where Bearer Securities may be
presented for payment and may be surrendered for exchange, provided that so long
as any series of debt securities is listed on the Republic of Ireland or the
Luxembourg Stock Exchange or any other stock exchange located outside the United
States and that stock exchange shall so require, we will maintain a paying agent
in London or Luxembourg or any other required city located outside the United
States, as the case may be, for that series of debt securities. (Section 1002)

     All moneys we pay to a paying agent for the payment of principal of or
premium, if any, or interest, if any, on any debt security that remains
unclaimed at the end of two years after that principal, premium or interest
shall have become due and payable will, at our request, be repaid to us, and the
Holder of that debt security or any coupon relating to that debt security will
thereafter look only to us for payment thereof. (Section 1003)

COVENANTS CONTAINED IN INDENTURES

     The Senior Indenture provides that we will not, and will not permit any
Subsidiary to, sell or otherwise dispose of, or permit any "PRINCIPAL SUBSIDIARY
BANK" (defined as any Subsidiary Bank having total assets in excess of 10% of
our total consolidated assets and those of our Subsidiaries) to issue (except to
us), shares of "CAPITAL STOCK" (defined as outstanding shares of stock of any
class), or securities convertible into Capital Stock, of any Principal
Subsidiary Bank, or any Subsidiary owning, directly or indirectly, in whole or
in part, Capital Stock of a Principal Subsidiary Bank, with the following
exceptions:

     - sales of directors' qualifying shares;

     - sales or other dispositions for fair market value if, after giving effect
       to that disposition and to the issuance of any shares issuable upon
       conversion or exchange of securities convertible or

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<PAGE>   48

exchangeable into Capital Stock, we would own, directly or indirectly, through
Subsidiaries, not less than 80% of the shares of each class of Capital Stock of
that Principal Subsidiary Bank;

     - sales or other dispositions or issuances made in compliance with an order
       or direction of a court or regulatory authority of competent
       jurisdiction; or

     - sales of Capital Stock by any Principal Subsidiary Bank to its
       stockholders where the sale does not reduce the percentage of shares of
       the same class owned by us. (Section 1006 of the Senior Indenture)

     At the date hereof, the only Subsidiary Banks which are Principal
Subsidiary Banks are Firstar Bank, N.A., Firstar Bank Milwaukee, N.A., Firstar
Bank Wisconsin, Firstar Bank Minnesota, N.A. and Firstar Bank U.S.A., N.A.
Notwithstanding the foregoing, any Principal Subsidiary Bank may be merged into
or consolidated with another banking institution organized under the laws of the
United States, any of its states or the District of Columbia, if, after giving
effect to that merger or consolidation, we or any wholly-owned Subsidiary owns
at least 80% of the Capital Stock of that other banking institution then issued
and outstanding free and clear of any security interest and if, immediately
after giving effect thereto, no default or Event of Default shall have happened
and be continuing.

     The Subordinated Indenture does not contain the foregoing covenant.

     We are not restricted by the Indentures from incurring, assuming or
becoming liable for any type of debt or other obligations, from creating liens
on property for any purpose, or from paying dividends or making distributions on
our Capital Stock or purchasing or redeeming our Capital Stock. The Indentures
do not require the maintenance of any financial ratios or specified levels of
net worth or liquidity. In addition, the Indentures do not contain any provision
that would require us to repurchase or redeem or otherwise modify the terms of
any of the debt securities upon a change in control or other events involving us
which may adversely affect the creditworthiness of the debt securities.

CONSOLIDATION, MERGER AND SALE OF ASSETS

     We may not consolidate with or merge with or into, or transfer or lease our
assets substantially as an entirety to, any Person unless (a) the successor
Person is a corporation organized and validly existing under the laws of a
domestic jurisdiction and expressly assumes our obligations on the debt
securities and under the applicable Indenture, and (b) after giving effect to
the transaction no Event of Default, and no event which, after notice or lapse
of time, or both, would become an Event of Default, shall have occurred and be
continuing. (Section 801)

MODIFICATION AND WAIVER

     Except as to certain modifications and amendments not adverse to Holders of
debt securities, modifications and amendments of and waivers of compliance with
provisions of each Indenture may be made only with the consent of the Holders of
not less than a majority in principal amount of the outstanding debt securities
of each series affected by that modification, amendment or waiver; provided that
no such modification or amendment may, without the consent of the Holder of each
outstanding debt security or coupon affected by that modification or amendment:

     - change the Stated Maturity of the principal or any installment of
       principal or any installment of interest, if any;

     - reduce the amount of principal or interest thereon, or any premium
       payable upon redemption or repayment thereof or in the case of an
       Original Issue Discount Security the amount of principal payable upon
       acceleration of the Maturity thereof;

     - change the place of payment or the currency in which principal or
       interest is payable, if any;

                                       15
<PAGE>   49

     - impair the right to institute suit for the enforcement of any payment of
       the principal, premium, if any, and interest, if any, or adversely affect
       the right of repayment, if any, at the option of the Holder;

     - reduce the percentage in principal amount of outstanding debt securities
       of any series, the consent of whose Holders is required for modification
       or amendment of the applicable Indenture or for waiver of compliance with
       certain provisions of the applicable Indenture or for waiver of certain
       defaults;

     - reduce the requirements contained in the applicable Indenture for quorum
       or voting;

     - in the case of subordinated debt securities convertible into common
       stock, impair any right to convert such subordinated debt securities; or

     - modify any of the above provisions. (Section 902)

     Each Indenture contains provisions for convening meetings of the Holders of
debt securities of a series issued under that Indenture if debt securities of
that series are issuable in whole or in part as Bearer Securities. (Section 1401
of the Senior Indenture, Section 1601 of the Subordinated Indenture) A meeting
may be called at any time by the Trustee for those debt securities, or upon our
request or the request of the Holders of at least 10% in principal amount of the
outstanding debt securities of that series, in any of those cases upon notice
given in accordance with the Indenture with respect thereto. (Section 1402 of
the Senior Indenture, Section 1602 of the Subordinated Indenture)

     Except as limited by the proviso in the preceding paragraph, any resolution
presented at a meeting or adjourned meeting at which a quorum is present may be
adopted by the affirmative vote of the Holders of a majority in principal amount
of the outstanding debt securities of that series; provided, however, that,
except as limited by the proviso in the preceding paragraph, any resolution with
respect to any consent or waiver which may be given by the Holders of not less
than a majority in principal amount of the outstanding debt securities of a
series issued under an Indenture may be adopted at a meeting or an adjourned
meeting at which a quorum is present only by the affirmative vote of the Holders
of a majority in principal amount of those outstanding debt securities of that
series; and provided, further, that, except as limited by the proviso in the
preceding paragraph, any resolution with respect to any demand, consent, waiver
or other action which may be made, given or taken by the Holders of a specified
percentage, which is less than a majority in principal amount of the outstanding
debt securities of a series issued under an Indenture, may be adopted at a
meeting or adjourned meeting at which a quorum is present by the affirmative
vote of the Holders of that specified percentage in principal amount of the
outstanding debt securities of that series. (Section 1404 of the Senior
Indenture, Section 1604 of the Subordinated Indenture)

     Any resolution passed or decision taken at any meeting of Holders of debt
securities of any series duly held in accordance with the applicable Indenture
with respect to those debt securities will be binding on all Holders of debt
securities of that series and the related coupons issued under that Indenture.
The quorum at any meeting of Holders of a series of debt securities called to
adopt a resolution, and at any reconvened meeting, will be persons holding or
representing a majority in principal amount of the outstanding debt securities
of that series; provided, however, that if any action is to be taken at such
meeting with respect to a consent or waiver which may be given by the Holders of
not less than a majority in principal amount of the outstanding debt securities
of a series, the Persons holding or representing a majority in principal amount
of the outstanding debt securities of that series issued under that Indenture
will constitute a quorum. (Section 1404 of the Senior Indenture, Section 1604 of
the Subordinated Indenture)

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<PAGE>   50

EVENTS OF DEFAULT

     Unless otherwise provided in the applicable prospectus supplement, any
series of senior debt securities issued under the Senior Indenture will provide
that the following will constitute Events of Default with respect to that
series:

     - default in the deposit of any sinking fund payment on any senior debt
       security of that series when due;

     - failure to perform specific covenants contained in that Indenture;

     - failure to perform any other covenant in that Indenture, continued for 30
       days after written notice of failure by the Trustee or the Holders of at
       least 25% in principal amount of the outstanding senior debt securities
       of that series issued under that Indenture; and

     - specific events of bankruptcy, insolvency or reorganization of Firstar.
       (Section 501 of the Senior Indenture)

     Unless otherwise provided in the applicable prospectus supplement, any
series of subordinated debt securities issued under the Subordinated Indenture
will provide that the only Event of Default will be specific events of
bankruptcy of Firstar. (Section 501 of the Senior Subordinated Indenture) In the
event of a default in the payment of principal, premium, if any, or interest, if
any; or a default of any sinking fund payment; or the nonperformance of any
covenant or agreement in the debt securities or Indentures, the Trustees,
subject to specific limitations and conditions, may institute judicial
proceedings to enforce payment of the principal, premium, if any, or interest,
if any, or to obtain the performance of the applicable covenant or agreement or
any other proper remedy. (Section 503)

     We are required to file with each Trustee annually an Officers' Certificate
concerning the absence of certain defaults under the terms of the Indentures.
(Section 1008 of the Senior Indenture, Section 1004 of the Subordinated
Indenture) Each Indenture provides that if an Event of Default specified in that
Indenture shall occur and be continuing, either the Trustee under the Indenture
or the Holders of not less than 25% in principal amount of the outstanding debt
securities of that series issued under that Indenture may declare the principal
of all those debt securities (or in the case of original issue discount
securities, that portion of the principal amount thereof as may be specified in
the terms thereof) to be due and payable. (Section 502) In certain cases, the
Holders of a majority in principal amount of the outstanding debt securities of
any series may, on behalf of the Holders of all debt securities of any series
and the related coupons, waive any past default or Event of Default except a
default (a) in payment of the principal of or premium, if any, or interest, if
any, on any of the debt securities of that series, and (b) in respect of a
covenant or provision of the Indenture which cannot be modified or amended
without the consent of the Holder of each outstanding debt security of the
series or coupon affected.

     Each Indenture contains a provision entitling the Trustee under the
Indenture, subject to the duty of that Trustee during default to act with the
required standard of care, to be indemnified by the Holders of the debt
securities of any series under the Indenture or any related coupons before
proceeding to exercise any right or power under the Indenture with respect to
that series at the request of those Holders. (Section 603) Each Indenture
provides that no Holder of any debt securities of any series under the Indenture
or any related coupons may institute any proceeding, judicial or otherwise, to
enforce that Indenture except in the case where the Trustee under the Indenture
fails to act for 60 days after it receives written notice of default and the
Trustee receives a request to enforce that Indenture by the Holders of not less
than 25% in aggregate principal amount of the outstanding debt securities of
that series and an offer of reasonable indemnity. (Section 507) This provision
will not prevent any Holder of debt securities or any related coupons from
enforcing payment of the principal thereof and premium, if any, and interest, if
any, thereon at the respective due dates thereof. (Section 508) The Holders of a
majority in aggregate principal amount of the outstanding debt securities of any
series issued under an Indenture may direct the time, method and place of
conducting any proceedings for any remedy available to the Trustee for those
debt securities or exercising any trust or power conferred on it with respect to
the debt securities of those series. However, that Trustee may refuse to follow
any direction that conflicts with law or the
                                       17
<PAGE>   51

Indenture under which it serves or which would be unjustly prejudicial to
Holders not joining therein. (Section 512)

     The Subordinated Indenture provides that the Subordinated Trustee will give
to the Holders of subordinated debt securities notice of a default if not cured
or waived, but, except in the case of a default in the payment of principal, or
premium, if any, or interest, if any, on any subordinated debt securities of
that series or any related coupons or in the payment of any sinking fund
installment with respect to subordinated debt securities of that series or in
the exchange of Capital Securities for subordinated debt securities of that
series, the Trustee for that subordinated debt securities shall be protected in
withholding that notice if it determines in good faith that the withholding of
that notice is in the interest of the Holders of those subordinated debt
securities. (Section 602 of the Subordinated Indenture)

     The Senior Indenture provides that the Senior Trustee will give to the
Holders of senior securities notice of a default; however, in the case of
default in the performance, or breach, of any covenant or warranty by us under
the Senior Indenture, and continuance of that default or breach for 30 days
after notice of default is given to us by the Senior Trustee or to us and the
Senior Trustee by the Holders of at least 25% in principal amount of the
outstanding debt securities of that series, requiring it to be remedied, the
Senior Trustee for those senior securities will not give notice to Holders of
senior debt securities until at least 30 days after the occurrence of that
default. (Section 602 of the Subordinated Indenture)

DEFEASANCE AND DISCHARGE

     We may be discharged from any and all obligations in respect of the debt
securities of any series (except for certain obligations relating to temporary
debt securities and exchange of debt securities, registration of transfer or
exchange of debt securities of that series, replacement of stolen, lost or
mutilated debt securities of that series, maintenance of paying agencies,
obligations to hold monies for payment in trust and payment of additional
amounts, if any, required in consequence of U.S. withholding taxes imposed on
payments to non-U.S. persons) upon the deposit with the appropriate Trustee, in
trust, of money and/or, to the extent such debt securities are denominated and
payable in U.S. dollars only, Eligible Instruments which through the payment of
interest and principal in respect thereof in accordance with their terms will
provide money in an amount sufficient to pay the principal of (and premium, if
any), each installment of interest on, and any mandatory sinking fund or
analogous payments on, the debt securities of that series on the Stated Maturity
of those payments in accordance with the terms of the applicable Indenture and
the debt securities of that series. Such a trust may be established only if,
among other things:

     - we delivered to the appropriate Trustee an opinion of counsel to the
       effect that (a) Firstar has received from, or there has been published
       by, the Internal Revenue Service a ruling, or (b) since the date of the
       applicable Indenture there has been a change in applicable U.S. federal
       income tax law, in either case, to the effect that, and based thereon
       that opinion of counsel shall confirm that, the Holders of debt
       securities of that series will not recognize income, gain or loss for
       U.S. federal income tax purposes as a result of that deposit, defeasance
       and discharge, and will be subject to U.S. federal income tax on the same
       amounts and in the same manner and at the same times as would have been
       the case if that deposit, defeasance and discharge had not occurred; and

     - the debt securities of that series, if then listed on any domestic or
       foreign securities exchange, will not be delisted as a result of that
       deposit, defeasance and discharge. (Section 403)

     In the event of any defeasance and discharge of debt securities of that
series, Holders of debt securities of that series would be able to look only to
the trust fund for payment of principal of and any premium and any interest on
their debt securities until maturity.

     We may terminate certain of our obligations under each Indenture with
respect to the debt securities of any series under the Indenture, including its
obligations to comply with the covenants described under "-- Covenants Contained
in Indentures" above, with respect to those debt securities, on the terms and
subject to the conditions contained in those Indentures, by depositing in trust
with the applicable Trustee

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<PAGE>   52

money and/or, to the extent those debt securities are denominated and payable in
U.S. dollars only, Eligible Instruments which, through the payment of principal
and interest in accordance with their terms, will provide money in an amount
sufficient to pay the principal and premium, if any, and interest, if any, on
those debt securities, and any mandatory sinking fund, repayment or analogous
payments thereon, on the scheduled due dates therefor. That deposit and
termination is conditioned, among other things, upon our delivery of an opinion
of counsel that the Holders of those debt securities will have no U.S. federal
income tax consequences as a result of that deposit and termination. That
termination will not relieve us of our obligation to pay when due the principal
of or interest on those debt securities if those debt securities of that series
are not paid from the money or Eligible Instruments held by the Trustee for the
payment thereof. (Section 1501 of the Senior Indenture, Section 1701 of the
Subordinated Indenture)

     The applicable prospectus supplement may further describe the provisions,
if any, permitting or restricting this defeasance with respect to the debt
securities of a particular series. In the event we exercise our option to omit
compliance with the covenants described under "-- Covenants Contained in
Indentures" above with respect to the debt securities of any series as described
above and the debt securities of that series are declared due and payable
because of the occurrence of any Event of Default, then the amount of money and
Eligible Instruments on deposit with the applicable Trustee will be sufficient
to pay amounts due on the debt securities of that series at the time of their
Stated Maturity but may not be sufficient to pay amounts due on the debt
securities of that series at the time of the acceleration resulting from such
Event of Default. In any event, we will remain liable for those payments as
provided in the applicable Indenture.

SUBORDINATION

     The subordinated debt securities will be subordinate and junior in right of
payment, to the extent set forth in the Subordinated Indenture, to all of our
Senior Debt. In the event that we default in the payment of any principal,
premium, if any, or interest, if any, on any Senior Debt when the same becomes
due and payable, whether at maturity or at a date fixed for prepayment or by
declaration of acceleration or otherwise, then, unless and until such default
shall have been cured or waived or shall have ceased to exist, no direct or
indirect payment (in cash, property, securities, by set-off or otherwise) shall
be made or agreed to be made for principal, premium, if any, or interest, if
any, on the subordinated debt securities, or in respect of any redemption,
repayment, retirement, purchase or other acquisition of any of the subordinated
debt securities. "SENIOR DEBT" means any of our obligations to our creditors,
whether now outstanding or subsequently incurred, other than (a) any obligation
as to which it is provided that such obligation is not Senior Debt and (b) the
subordinated debt securities. As of March 31, 1999, we had outstanding Senior
Debt of approximately $329 million.

     In the event of:

     - any insolvency, bankruptcy, receivership, liquidation, reorganization,
       readjustment, composition or other similar proceeding relating to us, our
       creditors or our property,

     - any proceeding for our liquidation, dissolution or other winding-up,
       voluntary or involuntary, whether or not involving insolvency or
       bankruptcy proceedings,

     - any assignment for the benefit of our creditors, or

     - any other marshalling of our assets,

then all Senior Debt (including any interest on that Senior Debt accruing after
the commencement of any such proceedings) shall first be paid in full before any
payment or distribution, whether in cash, securities or other property, shall be
made on account of the principal of or interest on the subordinated debt
securities. In that event, any payment or distribution on account of the
principal of or interest on the subordinated debt securities, whether in cash,
securities or other property (other than our securities or those of any other
corporation provided for by a plan of reorganization or readjustment, the
payment of which is subordinate, at least to the extent provided in the
subordination provisions with respect to the subordinated debt securities, to
the payment of all Senior Debt at the time outstanding, and to any
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<PAGE>   53

securities issued in respect thereof under any plan of reorganization or
readjustment), which would otherwise (but for the subordination provisions) be
payable or deliverable in respect of the subordinated debt securities shall be
paid or delivered directly to the holders of Senior Debt in accordance with the
priorities then existing among those holders until all Senior Debt (including
any interest on that Senior Debt accruing after the commencement of any of those
proceedings) shall have been paid in full. (Section 1801 of the Subordinated
Indenture)

     In the event of any such proceeding, after payment in full of all sums
owing with respect to Senior Debt, the Holders of subordinated debt securities,
together with the holders of any of our obligations ranking on a parity with the
subordinated debt securities, shall be entitled to be repaid from our remaining
assets the amounts at the time due and owing on account of unpaid principal,
premium, if any, and interest, if any, on the subordinated debt securities and
those other obligations before any payment or other distribution, whether in
cash, property or otherwise, shall be made on account of any capital stock or
our obligations ranking junior to the subordinated debt securities and those
other obligations. If any payment or distribution on account of the principal of
or interest on the subordinated debt securities of any character or any
security, whether in cash, securities or other property (other than our
securities or those of any other corporation provided for by a plan of
reorganization or readjustment, the payment of which is subordinate, at least to
the extent provided in the subordination provisions with respect to the
subordinated debt securities, to the payment of all Senior Debt at the time
outstanding and to any securities issued in respect thereof under any such plan
of reorganization or readjustment) shall be received by any Holder of any
subordinated debt securities in contravention of any of the terms of the
Subordinated Indenture, and before all the Senior Debt shall have been paid in
full, that payment or distribution or security shall be received in trust for
the benefit of, and shall be paid over or delivered and transferred to, the
holders of the Senior Debt at the time outstanding in accordance with the
priorities then existing among those holders for application to the payment of
all Senior Debt remaining unpaid to the extent necessary to pay all that Senior
Debt in full. (Section 1801 of the Subordinated Indenture) By reason of that
subordination, in the event of our insolvency, holders of Senior Debt may
receive more, ratably, and holders of the subordinated debt securities having a
claim pursuant to those securities may receive less, ratably, than our other
creditors. That subordination will not prevent the occurrence of any Event of
Default in respect of the subordinated debt securities.

CONVERSION OF SUBORDINATED CONVERTIBLE SECURITIES

     The Holders of subordinated debt securities of a specified series that are
convertible into our common stock, preferred shares or depositary shares
("SUBORDINATED CONVERTIBLE SECURITIES") will be entitled at certain times
specified in the applicable prospectus supplement, subject to prior redemption,
repayment or repurchase, to convert any subordinated convertible securities of
that series (in denominations set forth in the applicable prospectus supplement)
into common stock, preferred shares or depositary shares, as the case may be, at
the conversion price set forth in the applicable prospectus supplement, subject
to adjustment as described below and in the applicable prospectus supplement.
Except as described below, no adjustment will be made on conversion of any
subordinated convertible securities for interest accrued on those securities or
for dividends on any common stock, preferred shares or depositary shares issued.
(Section 1903 of the Subordinated Indenture) If any subordinated convertible
securities (not called for redemption or submitted for repayment) are converted
between a Regular Record Date for the payment of interest and the next
succeeding Interest Payment Date, that subordinated convertible securities must
be accompanied by funds equal to the interest payable on that succeeding
Interest Payment Date on the principal amount so converted. (Section 1903 of the
Subordinated Indenture) We are not required to issue fractional shares of common
stock upon conversion of subordinated convertible securities that are
convertible into common stock. In lieu thereof, we will pay a cash adjustment
based upon the Closing Price (as defined in the Subordinated Indenture) of the
common stock on the last business day prior to the date of conversion. (Section
1904 of the Subordinated Indenture) In the case of subordinated convertible
securities called for redemption or submitted for repayment, conversion rights
will expire at the close of business on the redemption date or repayment date,
as the case may be. (Section 1902 of the Subordinated Indenture)
                                       20
<PAGE>   54

     Unless otherwise indicated in the applicable prospectus supplement, the
conversion price for subordinated convertible securities that are convertible
into common stock is subject to adjustment under formulas set forth in the
Subordinated Indenture upon the occurrence of certain events, including the
issuance of our capital stock as a dividend or distribution on the common stock;
subdivisions and combinations of the common stock; the issuance to all holders
of common stock of certain rights or warrants entitling them to subscribe for or
purchase common stock, within 45 days after the date fixed for the determination
of the stockholders entitled to receive those rights or warrants, at less than
the current market price (as defined in the Subordinated Indenture); and the
distribution to all holders of common stock of evidences of our indebtedness or
assets (excluding certain cash dividends and distributions described in the next
paragraph) or rights or warrants (excluding those referred to above). (Section
1906 of the Subordinated Indenture)

     In the event that we distribute any rights or warrants to acquire capital
stock ("CAPITAL STOCK RIGHTS") under which separate certificates representing
those capital stock rights will be distributed subsequent to the initial
distribution of those capital stock rights (whether or not that distribution
shall have occurred prior to the date of the issuance of a series of
subordinated convertible securities), that subsequent distribution shall be
deemed to be the distribution of those capital stock rights; provided that we
may, in lieu of making any adjustment in the conversion price upon a
distribution of separate certificates representing those capital stock rights,
make proper provision so that each Holder of such a subordinated convertible
security who converts that subordinated convertible security (or any portion
thereof), (a) before the record date for that distribution of separate
certificates shall be entitled to receive upon that conversion shares of common
stock issued with capital stock rights, and (b) after that record date and prior
to the expiration, redemption or termination of such capital stock rights, shall
be entitled to receive upon such conversion, in addition to the shares of common
stock issuable upon such conversion, the same number of those capital stock
rights as would a holder of the number of shares of common stock that such
subordinated convertible security so converted would have entitled the holder
thereof to acquire in accordance with the terms and provisions applicable to the
capital stock rights if that subordinated convertible security were converted
immediately prior to the record date for such distribution. Common stock owned
by or held for our account or any majority owned subsidiary will not be deemed
outstanding for the purpose of any adjustment. (Section 1906 of the Subordinated
Indenture)

     No adjustment in the conversion price of subordinated convertible
securities that are convertible into common stock will be made for regular
quarterly or other periodic or recurring cash dividends or distributions or for
cash dividends or distributions to the extent paid from retained earnings. No
adjustment in the conversion price of subordinated convertible securities that
are convertible into common stock will be required unless that adjustment would
require a change of at least 1% in the conversion price then in effect, provided
that any adjustment not so made will be carried forward and taken into account
in any subsequent adjustment; and provided, further, that any adjustment not so
made will be made no later than three years after the occurrence of the event
requiring that adjustment to be made or carried forward. We reserve the right to
make those reductions in the conversion price in addition to those required in
the foregoing provisions as we, in our discretion, shall determine to be
advisable in order that certain stock-related distributions thereafter made by
us to our stockholders will not be taxable. (Section 1906 of the Subordinated
Indenture) Except as stated above, the conversion price will not be adjusted for
the issuance of common stock or any securities convertible into or exchangeable
for common stock, or securities carrying the right to purchase any of the
foregoing.

     If we (a) reclassify or change the common stock, (b) consolidate or merge,
or (c) sell or convey all or substantially all of our property and assets to
another corporation, in each case as a result of which holders of common stock
will be entitled to receive stock, securities, other property or assets
(including cash) with respect to, or in exchange for, that common stock, the
Holders of the subordinated convertible securities then outstanding that are
convertible into common stock will be entitled thereafter to convert those
subordinated convertible securities into the kind and amount of shares of stock
and other securities or property which they would have received upon that
reclassification, change, consolidation, merger, sale or conveyance had that
subordinated convertible securities been converted into common stock immediately

                                       21
<PAGE>   55

prior to that reclassification, change, consolidation, merger, sale or
conveyance. (Section 1907 of the Subordinated Indenture)

     In the event of a taxable distribution to holders of common stock which
results in any adjustment of the conversion price of subordinated convertible
securities that are convertible into common stock, the Holders of those
subordinated convertible securities may, in certain circumstances, be deemed to
have received a distribution subject to U.S. income tax as a dividend; in
certain other circumstances, the absence of such an adjustment may result in a
taxable dividend to the holders of common stock or those subordinated
convertible securities.

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<PAGE>   56

                        DESCRIPTION OF PREFERRED SHARES

     The following description of the terms of the preferred stock, par value
$1.00 per share (the "PREFERRED SHARES") sets forth certain general terms and
provisions of the preferred shares to which any prospectus supplement may
relate. Certain other terms of any series of preferred shares will be described
in the prospectus supplement. If so indicated in the prospectus supplement, the
terms of any of those series may differ from the terms set forth below. The
description of certain provisions of the preferred shares set forth below and in
any prospectus supplement does not purport to be complete and is subject to and
qualified in its entirety by reference to the certificate of designations
relating to each series of the preferred shares.

GENERAL

     Pursuant to our Articles of Incorporation, our Board of Directors has the
authority, without further stockholder action, to issue from time to time a
maximum of preferred shares, including shares issued or reserved for issuance,
in one or more series and with such terms and at such times and for such
consideration as our Board of Directors may determine. The terms and conditions
of the preferred shares are governed by the laws of the state of Wisconsin as
well as by our Articles of Incorporation. The authority of our Board of
Directors includes the determination or fixing of the following with respect to
any series of preferred shares:

     - the number of preferred shares and designation or title thereof;

     - rights as to dividends;

     - whether and upon what terms the preferred shares are to be redeemable;

     - the rights of the holders upon our liquidation, dissolution, or winding
       up;

     - whether and upon what terms the preferred shares shall have a redemption,
       purchase or retirement requirement, or sinking fund;

     - whether and upon what terms the preferred shares are to be convertible;

     - the voting rights, if any, which shall apply;

     - whether we may issue the preferred shares as a share dividend; and

     - any other term, condition or provision of such series.

     No preferred shares are currently outstanding.

     As described under "Description of Depositary Shares," we may, at our
option, elect to offer interests in preferred shares by depositary shares
("DEPOSITARY SHARES") evidenced by depositary receipts ("DEPOSITARY RECEIPTS"),
each representing a fractional interest (to be specified in the prospectus
supplement relating to the particular series of the preferred shares) in a share
of the particular series of the preferred shares issued and deposited with a
bank or trust company selected by us having its principal executive office in
the United States and having a combined capital and surplus of at least
$50,000,000 (the "DEPOSITARY").

     The preferred shares will have the dividend, liquidation, redemption,
voting and conversion rights discussed below unless otherwise provided in the
prospectus supplement relating to a particular series of the preferred shares.
For information concerning legal limitations on the ability of one of our banks
to supply funds to us, see "Certain Regulatory Matters."

     The prospectus supplement relating to the particular series of the
preferred shares offered thereby may include certain specific terms, including:

     - the title, stated value and liquidation preference of those preferred
       shares and the number of preferred shares offered;

                                       23
<PAGE>   57

     - the initial public offering price at which those preferred shares will be
       issued;

     - the dividend rate or rates (or method of calculation), the dividend
       periods, the dates on which dividends will be payable, and whether those
       dividends will be cumulative or noncumulative and, if cumulative, the
       dates from which dividends will commence to cumulate;

     - any repurchase, redemption or sinking fund provisions;

     - any conversion provisions;

     - whether we elect to offer depositary shares; and

     - any additional dividend, liquidation, redemption, sinking fund and other
       rights, preferences, privileges, limitations and restrictions.

     The preferred shares will, when issued, be fully paid and nonassessable.
Unless otherwise specified in the prospectus supplement relating to a particular
series of the preferred shares, each series of the preferred shares will rank on
a parity in all respects with each other series of the preferred shares and will
rank senior to our series A junior participating preferred stock described
below. The preferred shares will have no preemptive rights to subscribe for any
additional securities which we may issue. Unless otherwise specified in the
applicable prospectus supplement, Firstar Bank, N.A. will be the transfer agent
and registrar for the preferred shares and any depositary shares.

     Unless otherwise specified in the applicable prospectus supplement, the
preferred shares will rank senior to the series A junior participating preferred
stock as to the payment of dividends and the distribution of assets. The common
stock, including the common stock that may be issued upon conversion of the
preferred shares or in exchange for, or upon conversion of, subordinated debt
securities, will be subject to any prior rights of the preferred shares then
outstanding.

DIVIDENDS

     The holders of the preferred shares of each series will be entitled to
receive, when, as and if declared by our Board of Directors or a duly authorized
committee thereof, out of funds legally available therefor, cash dividends at
those rates and on those dates as will be set forth in the prospectus supplement
relating to that series. Those rates may be fixed or variable or both. If
variable, the formula used for determining the dividend rate for each dividend
period will be set forth in the prospectus supplement. Dividends will be payable
to the holders of record as they appear on our stock books on those record dates
as will be fixed by our Board of Directors or a duly authorized committee
thereof.

     Dividends on any series of the preferred shares may be cumulative or
noncumulative, as provided in the applicable prospectus supplement. If our Board
of Directors fails to declare a dividend payable on a dividend payment date on
any series of the preferred shares for which dividends are noncumulative
("NONCUMULATIVE PREFERRED SHARES"), then the holders of that series of the
preferred shares will have no right to receive a dividend in respect of the
dividend period ending on that dividend payment date, and we will have no
obligation to pay the dividend accrued for that period, whether or not dividends
on that series are declared payable on any future dividend payment dates.

     No full dividends may be declared or paid or set apart for payment on any
of our capital stock that ranks, as to dividends, on a parity with or junior to
the preferred shares for any period unless full dividends on the preferred
shares of each series (including any accumulated dividends) have been or
contemporaneously are declared and paid or declared and a sum sufficient for the
payment thereof set apart for that payment. When dividends are not paid in full
upon any series of preferred shares, all dividends declared or made upon
preferred shares of each series will be declared pro rata so that the amount of
dividends declared per share on preferred shares of each series will in all
cases bear to each other the same ratio that accrued dividends per share (which,
in the case of noncumulative preferred shares, will not include any accumulation
in respect of unpaid dividends for prior dividend periods) on

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<PAGE>   58

shares of each series of the preferred shares bear to each other. Except as
provided in the preceding sentence, no dividend (other than dividends or
distributions paid in shares of, or options, warrants or rights to subscribe for
or purchase shares of, common stock or any other capital stock of ours that
ranks junior to the preferred shares as to dividends and upon liquidation) will
be declared or paid, or set aside for payment or other distribution declared or
made upon the common stock or any other capital stock of ours that ranks junior
to, or on a parity with, the preferred shares as to dividends or upon
liquidation, nor shall any common stock, nor any other capital stock of ours
that ranks junior to or on a parity with the preferred shares as to dividends or
upon liquidation, be redeemed, purchased or otherwise acquired for any
consideration (or that any money be paid to or made available for a sinking fund
for the redemption of any shares of that stock) by us (except by conversion into
or exchange for capital stock of ours that ranks junior to the preferred shares
as to dividends and upon liquidation) unless, in each case, the full dividends
on each series of the preferred shares shall have been paid, or declared and set
aside for payment. No interest, or sum of money in lieu of interest, shall be
payable in respect of any dividend payment or payments on any series of the
preferred shares which may be in arrears.

REDEMPTION

     A series of the preferred shares may be redeemable, in whole or in part, at
our option, and may be subject to mandatory redemption pursuant to a sinking
fund or otherwise, in each case, upon terms, at the times and at the redemption
prices set forth in the prospectus supplement relating to that series. Preferred
shares redeemed by us will be restored to the status of authorized but unissued
preferred shares.

     The prospectus supplement relating to a series of the preferred shares
which is subject to mandatory redemption will specify the number of shares of
that series which shall be redeemed by us in each year commencing after a date
to be specified, at a redemption price per share to be specified, together with
an amount equal to all accrued and unpaid dividends on those preferred shares to
the date of redemption. The redemption price may be payable in cash or other
property, as specified in the prospectus supplement relating to that series of
the preferred shares. If the redemption price is payable only from the net
proceeds of the issuance of our capital stock, the terms of that series may
provide that, if no such capital stock shall have been issued or to the extent
the net proceeds from any issuance are insufficient to pay in full the aggregate
redemption price then due, the applicable shares of that series of the preferred
shares will automatically and mandatorily be converted into shares of our
applicable capital stock pursuant to conversion provisions specified in the
prospectus supplement relating to that series of the preferred shares.

     If fewer than all of the outstanding shares of any series of the preferred
shares are to be redeemed, the number of preferred shares to be redeemed will be
determined by our Board of Directors and those preferred shares will be redeemed
pro rata from the holders of record of those preferred shares in proportion to
the number of those preferred shares held by those holders (with adjustments to
avoid redemption of fractional shares).

     Notwithstanding the foregoing, if any dividends, including any
accumulation, on preferred shares of any series are in arrears, no preferred
shares of that series will be redeemed unless all outstanding preferred shares
of that series are simultaneously redeemed, and we are prohibited from
purchasing or otherwise acquiring any preferred shares of that series; provided,
however, that the foregoing will not prevent the purchase or acquisition of
preferred shares of that series pursuant to a purchase or exchange offer,
provided that that offer is made on the same terms to all holders of that series
of the preferred shares.

     Notice of redemption will be given by mailing the same to each record
holder of the preferred shares to be redeemed, not less than 30 nor more than 60
days prior to the date fixed for redemption of those preferred shares to the
respective addresses of such holders as the same shall appear on our stock
books. Each such notice shall state:

     - the redemption date;

     - the number of preferred shares and series of the preferred shares to be
       redeemed;

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<PAGE>   59

     - the redemption price;

     - the place or places where certificates for the preferred shares are to be
       surrendered for payment of the redemption price;

     - that dividends on the preferred shares to be redeemed will cease to
       accrue on such redemption date; and

     - the date upon which the holder's conversion rights as to the preferred
       shares, if any, shall terminate.

     If fewer than all preferred shares of any series of the preferred shares
held by any holder are to be redeemed, the notice mailed to that holder will
also specify the number or percentage of preferred shares to be redeemed from
that holder.

     If notice of redemption has been given, from and after the redemption date
for the shares of the series of the preferred shares called for redemption
(unless we default in providing money for the payment of the redemption price of
the preferred shares so called for redemption), dividends on the preferred
shares so called for redemption will cease to accrue and those preferred shares
will no longer be deemed to be outstanding, and all rights of the holders of
those preferred shares as our stockholders (except the right to receive the
redemption price) will cease. Upon surrender in accordance with such notice of
the certificates representing any preferred shares so redeemed (properly
endorsed or assigned for transfer, if our Board of Directors so requires and the
notice shall so state), the redemption price set forth above will be paid out of
funds provided by us. If fewer than all of the preferred shares represented by
any such certificate are redeemed, a new certificate will be issued representing
the unredeemed preferred shares without cost to the holder of those preferred
shares.

     In the event that a redemption described above is deemed to be a "tender
offer" within the meaning of Rule 14e-1 under the Exchange Act, we will comply
with all applicable provisions of the Securities and Exchange Act of 1934, as
amended (the "EXCHANGE ACT").

CONVERSION

     The prospectus supplement relating to a series of the preferred shares
which is convertible will state the terms on which preferred shares of that
series are convertible into shares of common stock or a series of preferred
shares.

RIGHTS UPON LIQUIDATION

     In the event of our voluntary or involuntary liquidation, dissolution or
winding up, the holders of shares of each series of the preferred shares upon
liquidation will be entitled to receive out of our assets available for
distribution to stockholders, before any distribution of assets is made to
holders of the common stock or any other class or series of our capital stock
that ranks junior to such series of the preferred shares upon liquidation,
liquidation distributions in the amount set forth in the prospectus supplement
relating to that series of the preferred shares plus an amount equal to the sum
of all accrued and unpaid dividends (whether or not earned or declared) for the
then current dividend period and, if that series of the preferred shares is
cumulative, for all dividend periods prior thereto. Neither the sale of all or
substantially all of our property and assets, nor our merger or consolidation
into or with any other corporation nor the merger or consolidation of any other
corporation into or with us, will be deemed to be a dissolution, liquidation or
winding up. If, upon our voluntary or involuntary liquidation, dissolution or
winding up, our assets available for distribution to the holders of the
preferred shares of any series are insufficient to pay in full all amounts to
which those holders are entitled, no such distribution will be made on account
of any shares of any other series of the preferred shares unless proportionate
distributive amounts shall be paid on account of the preferred shares of that
series, ratably, in proportion to the full distributive amounts for which
holders of all such parity shares are respectively entitled upon such
dissolution, liquidation or winding up. After payment of the full amount of the
liquidation distribution to

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<PAGE>   60

which they are entitled, the holders of that series of the preferred shares will
have no right or claim to any of our remaining assets.

VOTING RIGHTS

     Except as indicated below or in the prospectus supplement relating to a
particular series of the preferred shares, or except as expressly required by
applicable law, the holders of the preferred shares will not be entitled to
vote. In the event we issue shares of a series of the preferred shares, unless
otherwise indicated in the prospectus supplement relating to that series, each
share will be entitled to one vote on matters on which holders of that series
are entitled to vote. However, as more fully described under "Description of
Depositary Shares," if we elect to provide for the issuance of depositary shares
representing fractional interests in a share of that series of the preferred
shares, the holders of each such depositary share will, in effect, be entitled
through the Depositary to a fraction of a vote, rather than a full vote. In the
case of any series of preferred shares having one vote per share on matters on
which holders of that series are entitled to vote, the voting power of that
series, on matters on which holders of that series and holders of any other
series of preferred shares are entitled to vote as a single class, will depend
on the number of shares in that series, not the aggregate stated value,
liquidation preference or initial offering price of the shares of that series of
the preferred shares.

     Under interpretations adopted by the Federal Reserve Board, if the holders
of any series of the preferred shares become entitled to vote for the election
of directors because dividends on such series are in arrears, that series may
then be deemed a "class of voting securities" and a holder of 25% or more of
that series (or a holder of 5% or more if it otherwise exercises a "controlling
influence" over us) may then be subject to regulation as a bank holding company
in accordance with the BHCA. In addition, at the time that series is deemed a
class of voting securities, any other bank holding company may be required to
obtain the prior approval of the Federal Reserve Board to acquire 5% or more of
that series, and any person other than a bank holding company may be required to
obtain the prior approval of the Federal Reserve Board to acquire 10% or more of
that series.

     So long as any preferred shares of any series remain outstanding, we will
not, without the consent of the holders of the outstanding preferred shares of
that series, by a vote of at least two-thirds of all those outstanding preferred
shares voting together as a class, given in person or by proxy, either in
writing or at a meeting, (a) authorize, create or issue, or increase the
authorized or issued amount of, any class or series of stock ranking prior to
the preferred shares with respect to payment of dividends or the distribution of
assets on liquidation, dissolution or winding up, or (b) amend, alter or repeal,
whether by merger, consolidation or otherwise, the provisions of our Articles of
Incorporation or of the resolutions contained in a Certificate of Designations
for any series of the preferred shares designating that series of the preferred
shares and the preferences and relative, participating, optional or other
special rights and qualifications, limitations and restrictions thereof, so as
to adversely affect any right, preference, privilege or voting power of the
preferred shares or the holders of the preferred shares.

                                       27
<PAGE>   61

                        DESCRIPTION OF DEPOSITARY SHARES

     The following description and any description in any prospectus supplement
of certain provisions of the Deposit Agreement and of the depositary shares and
depositary receipts is a summary and does not purport to be complete. The
summary is qualified in its entirety by reference to the Deposit Agreement and
depositary receipts relating to each series of the preferred shares, a form of
which is filed as an exhibit to the registration statement to which this
prospectus pertains.

GENERAL

     We may, at our option, elect to offer fractional interests in preferred
shares, rather than full preferred shares. If we exercise this option, we will
provide for the issuance to the public by a Depositary of depositary receipts
evidencing depositary shares, each of which will represent a fractional interest
(to be set forth in the prospectus supplement relating to a particular series of
the preferred shares) in a share of a particular series of the preferred shares
as described below.

     The shares of any series of the preferred shares underlying the depositary
shares will be deposited under a separate deposit agreement (the "DEPOSIT
AGREEMENT") between us and the Depositary. The prospectus supplement relating to
a series of depositary shares will set forth the name and address of the
principal executive office of the Depositary. Subject to the terms of the
Deposit Agreement, each owner of a depositary share will be entitled, in
proportion to the applicable fractional interest in a preferred share underlying
that depositary share, to all the rights and preferences of the preferred shares
underlying that depositary share (including dividend, voting, redemption,
conversion and liquidation rights).

     Pending the preparation of definitive engraved depositary receipts, the
Depositary may, upon our written order, issue temporary depositary receipts
substantially identical to (and entitling the holders thereof to all the rights
pertaining to) the definitive depositary receipts but not in definitive form.
Definitive depositary receipts will be prepared thereafter without unreasonable
delay, and temporary depositary receipts will be exchangeable for definitive
depositary receipts at our expense.

     Upon surrender of the depositary receipts at the principal office of the
Depositary (unless the related depositary shares have previously been called for
redemption), the owner of the depositary shares evidenced thereby is entitled to
delivery at such office, to or upon his order, of the number of preferred shares
and any money or other property represented by those depositary shares. Partial
preferred shares will not be issued. If the depositary receipts delivered by the
holder evidence a number of depositary shares in excess of the number of
depositary shares representing the number of whole preferred shares to be
withdrawn, the Depositary will deliver to that holder at the same time a new
depositary receipt evidencing the excess number of depositary shares. Holders of
preferred shares thus withdrawn will not thereafter be entitled to deposit such
shares under the Deposit Agreement or to receive depositary shares therefor. We
do not expect that there will be any public trading market for the preferred
shares represented by depositary receipts except as represented by the
depositary shares.

DIVIDENDS AND OTHER DISTRIBUTIONS

     The Depositary will distribute all cash dividends or other cash
distributions received in respect of the preferred shares to the record holders
of depositary shares relating to such preferred shares in proportion to the
numbers of such depositary shares owned by such holders on the relevant record
date. The Depositary will distribute only such amount, however, as can be
distributed without attributing to any holder of depositary shares a fraction of
one cent, and any balance not so distributed will be added to and treated as
part of the next sum received by the Depositary for distribution to record
holders of depositary shares.

     In the event of a distribution other than in cash, the Depositary will
distribute property received by it to the record holders of depositary shares
entitled to that property, unless the Depositary determines that it is not
feasible to make that distribution, in which case the Depositary may, with our
approval, sell such property and distribute the net proceeds from that sale to
the holders.

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<PAGE>   62

     The Deposit Agreement will also contain provisions relating to the manner
in which any subscription or similar rights offered by us to holders of the
preferred shares will be made available to holders of depositary shares.

REDEMPTION OF DEPOSITARY SHARES

     If a series of the preferred shares underlying the depositary shares is
subject to redemption, the depositary shares will be redeemed from the proceeds
received by the Depositary resulting from the redemption, in whole or in part,
of that series of the preferred shares held by the Depositary. The Depositary
will mail notice of redemption not less than 30 and not more than 60 days prior
to the date fixed for redemption to the record holders of the depositary shares
to be so redeemed at their respective addresses appearing in the Depositary's
books. The redemption price per depositary share will be equal to the applicable
fraction of the redemption price per share payable with respect to such series
of the preferred shares. Whenever we redeem preferred shares held by the
Depositary, the Depositary will redeem as of the same redemption date the number
of depositary shares relating to the preferred shares so redeemed. If less than
all the depositary shares are to be redeemed, the depositary shares to be
redeemed will be selected by lot or pro rata as may be determined by the
Depositary.

     After the date fixed for redemption, the depositary shares so called for
redemption will no longer be deemed to be outstanding and all rights of the
holders of the depositary shares will cease, except the right to receive the
moneys payable upon that redemption and any money or other property to which the
holders of those depositary shares were entitled upon that redemption, upon
surrender to the Depositary of the depositary receipts evidencing those
depositary shares.

VOTING THE PREFERRED SHARES

     Upon receipt of notice of any meeting at which the holders of the preferred
shares are entitled to vote, the Depositary will mail the information contained
in that notice of meeting to the record holders of the depositary shares
relating to those preferred shares. Each record holder of those depositary
shares on the record date (which will be the same date as the record date for
the preferred shares) will be entitled to instruct the Depositary as to the
exercise of the voting rights pertaining to the number of shares of preferred
shares underlying that holder's depositary shares. The Depositary will endeavor,
insofar as practicable, to vote the number of preferred shares underlying those
depositary shares in accordance with those instructions, and we will agree to
take all action which may be deemed necessary by the Depositary in order to
enable the Depositary to do so. The Depositary will abstain from voting
preferred shares to the extent it does not receive specific instructions from
the holders of depositary shares relating to those preferred shares.

TAXATION

     Owners of depositary shares will be treated for U.S. federal income tax
purposes as if they were owners of the preferred shares represented by those
depositary shares, and, accordingly, will be entitled to take into account for
U.S. federal income tax purposes income and deductions to which they would be
entitled if they were holders of those preferred shares. In addition,

     - no gain or loss will be recognized for U.S. federal income tax purposes
       upon the withdrawal of preferred shares in exchange for depositary shares
       as provided in the Deposit Agreement;

     - the tax basis of each preferred share to an exchanging owner of
       depositary shares will, upon such exchange, be the same as the aggregate
       tax basis of the depositary shares exchanged therefor; and

     - the holding period for the preferred shares in the hands of an exchanging
       owner of depositary shares will include the period during which that
       person owned those depositary shares.

                                       29
<PAGE>   63

AMENDMENT AND TERMINATION OF THE DEPOSITARY AGREEMENT

     The form of depositary receipt evidencing the depositary shares and any
provision of the Deposit Agreement may at any time be amended by agreement
between us and the Depositary. However, any amendment which materially and
adversely alters the rights of the existing holders of depositary shares will
not be effective unless that amendment has been approved by the record holders
of at least a majority of the depositary shares then outstanding. A Deposit
Agreement may be terminated by us or the Depositary only if (a) all outstanding
depositary shares relating thereto have been redeemed, or (b) there has been a
final distribution in respect of the preferred shares of the relevant series in
connection with any liquidation, dissolution or winding up of Firstar, and that
distribution has been distributed to the holders of the related depositary
shares.

CHARGES OF DEPOSITARY

     We will pay all transfer and other taxes and governmental charges arising
solely from the existence of the depositary arrangements. We will pay charges of
the Depositary in connection with the initial deposit of the preferred shares
and any redemption of the preferred shares. Holders of depositary shares will
pay other transfer and other taxes and governmental charges and those other
charges as are expressly provided in the Deposit Agreement to be for their
accounts.

MISCELLANEOUS

     The Depositary will forward to the holders of depositary shares all reports
and communications from us which are delivered to the Depositary and which we
are required to furnish to the holders of the preferred shares.

     Neither us nor the Depositary will be liable if either of us is prevented
or delayed by law or any circumstance beyond its control in performing our
obligations under the Deposit Agreement. Our obligations and those of the
Depositary under the Deposit Agreement will be limited to performance in good
faith of our duties thereunder and we will not be obligated to prosecute or
defend any legal proceeding in respect of any depositary shares or preferred
shares unless satisfactory indemnity is furnished. We may rely upon written
advice of counsel or accountants, or information provided by persons presenting
preferred shares for deposit, holders of depositary shares, or other persons
believed to be competent and on documents believed to be genuine.

RESIGNATION AND REMOVAL OF DEPOSITARY

     The Depositary may resign at any time by delivering to us notice of its
election to do so, and we may at any time remove the Depositary, any such
resignation or removal to take effect upon the appointment of a successor
Depositary and its acceptance of that appointment. A successor Depositary must
be appointed within 60 days after delivery of the notice of resignation or
removal and must be a bank or trust company having its principal office in the
United States and having a combined capital and surplus of at least $50,000,000.

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<PAGE>   64

                          DESCRIPTION OF COMMON STOCK

GENERAL

     Our Board of Directors is authorized to issue a maximum of 800,000,000
shares of common stock. As of March 31, 1999, approximately 661,214,244 shares
of common stock were issued and outstanding. The terms and conditions of the
common stock are governed by the laws of the State of Wisconsin as well as by
our Articles of Incorporation.

     Subject to any prior rights of any preferred shares then outstanding,
holders of the common stock are entitled to receive such dividends as are
declared by our Board of Directors out of funds legally available for those
dividends. For information concerning legal limitations on the ability of our
banks to supply funds to us, see "Certain Regulatory Matters." Subject to the
rights, if any, of any preferred shares then outstanding, all voting rights are
vested in the holders of common stock. Holders of common stock are entitled to
one vote per share on all matters to be voted upon by our shareholders.

     The common stock has no preemptive rights. The transfer agent and registrar
for the common stock is Firstar Bank Milwaukee N.A.

RIGHTS PLAN

     Each share of common stock outstanding (and each share issued by us prior
to the occurrence of certain events) carries with it one preferred stock
purchase right to purchase, at a price of $300.00, one-hundredth of a share of
our series A junior participating preferred stock. The preferred stock purchase
rights are exercisable only if a person or group (an "ACQUIRING PERSON")
acquires or obtains the right to acquire ownership of 15% or more of our common
stock, commences a tender or exchange offer for 15% or more of the common stock
or is declared an Acquiring Person by our Board of Directors. We are entitled to
redeem the preferred stock purchase rights at a price of one cent per preferred
stock purchase right at any time before the date a 15% position has been
acquired.

     Each preferred stock purchase right entitles its holder (other than an
Acquiring Person) to purchase common stock having a market value at that time of
twice the preferred stock purchase right's exercise price under certain
circumstances where a person or group has acquired a 15% block of our common
stock or commenced a tender or exchange offer for 15% or more of our common
stock. The plan also allows our Board of Directors to lower the threshold to not
less than 10% if appropriate in light of specific circumstances. The preferred
stock purchase rights also provide a similar right for holders (other than an
Acquiring Person) to purchase, at the preferred stock purchase right's
then-current exercise price, a number of the acquiring company's common shares
having a market value at that time of twice the preferred stock purchase right's
exercise price.

     As long as the preferred stock purchase rights are attached to and
evidenced by the certificates representing the common stock, we will continue to
issue one preferred stock purchase right with each share of common stock that
shall become outstanding. A preferred stock purchase right is presently attached
to each issued and outstanding share of common stock. The preferred stock
purchase rights will expire on December 1, 2008 unless earlier redeemed.

     The preferred stock purchase rights have certain antitakeover effects. The
preferred stock purchase rights may cause substantial dilution to a person or
group that attempts to acquire us on terms not approved by our Board of
Directors. The preferred stock purchase rights should not interfere with any
merger or other business combination approved by our Board of Directors since
they may be redeemed by us prior to the consummation of that transaction.

     The rights agreement has been filed by us as an exhibit to our Form 8-A
dated as of December 1, 1998. The description of the preferred stock purchase
rights found in the foregoing Form 8-A has been incorporated by reference herein
and copies of that Form 8-A can be obtained in the manner set forth under "Where
You Can Find More Information."

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<PAGE>   65

                       DESCRIPTION OF SECURITIES WARRANTS

     We may issue securities warrants for the purchase of debt securities,
preferred shares, depositary shares or common stock. Securities warrants may be
issued independently or together with debt securities, preferred shares or
depositary shares offered by any prospectus supplement and may be attached to or
separate from those debt securities, preferred shares or depositary shares. Each
series of securities warrants will be issued under a separate warrant agreement
(a "SECURITIES WARRANT AGREEMENT") to be entered into by us and a bank or trust
company, as securities warrant agent (the "SECURITIES WARRANT AGENT"), all as
set forth in the prospectus supplement relating to the particular issue of
offered securities warrants. The Securities Warrant Agent will act solely as our
agent in connection with securities warrant certificates (the "SECURITIES
WARRANT CERTIFICATES") and will not assume any obligation or relationship of
agency or trust for or with any holders of securities warrant certificates or
beneficial owners of securities warrants. Copies of the forms of Securities
Warrant Agreements, including the forms of securities warrant certificates
representing the securities warrants, are filed as exhibits to the registration
statement to which this prospectus pertains. The following summaries of certain
provisions of the forms of Securities Warrant Agreements and securities warrant
certificates do not purport to be complete and are subject to, and are qualified
in their entirety by reference to, all the provisions of the Securities Warrant
Agreements and the securities warrant certificates.

GENERAL

     If securities warrants are offered, the applicable prospectus supplement
will describe the terms of those securities warrants, including, in the case of
securities warrants for the purchase of debt securities, the following where
applicable:

     - the offering price and exercise price;

     - the currencies in which those securities warrants are being offered;

     - the designation, aggregate principal amount, currencies, denominations
       and terms of the series of debt securities purchasable upon exercise of
       those securities warrants;

     - the designation and terms of any series of debt securities, preferred
       shares or depositary shares with which those securities warrants are
       being offered and the number of those securities warrants being offered
       with each debt security, preferred share or depositary share;

     - the date on and after which those securities warrants and the related
       series of debt securities, preferred shares or depositary shares will be
       transferable separately;

     - the principal amount of the series of debt securities purchasable upon
       exercise of each securities warrant and the price at which and currencies
       in which the principal amount of debt securities of that series may be
       purchased upon such exercise;

     - the date on which the right to exercise those securities warrants shall
       commence and the date on which that right shall expire (the "EXPIRATION
       DATE");

     - whether the securities warrants will be issued in registered or bearer
       form;

     - U.S. federal income tax consequences; and

     - any other terms of those securities warrants.

     In the case of securities warrants for the purchase of preferred shares,
depositary shares or common stock, the applicable prospectus supplement will
describe the terms of those securities warrants, including the following where
applicable:

     - the offering price and exercise price;

     - the aggregate number of shares purchasable upon exercise of those
       securities warrants and, in the case of securities warrants for preferred
       shares or depositary shares, the designation, aggregate

                                       32
<PAGE>   66

number and terms of the series of preferred shares purchasable upon exercise of
those securities warrants or underlying the depositary shares purchasable upon
exercise of those securities warrants;

     - the designation and terms of the series of debt securities, preferred
       shares or depositary shares with which those securities warrants are
       being offered, and the number of those securities warrants being offered
       with each such debt security, preferred share or depositary share;

     - the date on and after which those securities warrants and the related
       series of debt securities, preferred shares or depositary shares will be
       transferable separately;

     - the number of preferred shares, depositary shares or shares of common
       stock purchasable upon exercise of each securities warrant and the price
       at which that number of preferred shares or depositary shares of that
       series or shares of common stock may be purchased upon each exercise;

     - the date on which the right to exercise those securities warrants will
       commence and the expiration date;

     - U.S. federal income tax consequences; and

     - any other terms of those securities warrants.

     Securities warrants for the purchase of preferred shares, depositary shares
or common stock will be offered and exercisable for U.S. dollars only and will
be in registered form only.

     Securities warrant certificates may be exchanged for new securities warrant
certificates of different denominations, may (if in registered form) be
presented for registration of transfer, and may be exercised at the corporate
trust office of the securities warrant agent or any other office indicated in
the applicable prospectus supplement. Prior to the exercise of any securities
warrant to purchase debt securities, holders of those securities warrants will
not have any of the rights of holders of the debt securities purchasable upon
exercise of those securities warrants, including the right to receive payments
of principal of, premium, if any, or interest, if any, on the debt securities
purchasable upon that exercise, or to enforce covenants in the applicable
indenture. Prior to the exercise of any securities warrants to purchase
preferred shares, depositary shares or common stock, holders of those securities
warrants will not have any rights of holders of the preferred shares, depositary
shares or common stock purchasable upon such exercise, including the right to
receive payments of dividends, if any, on the preferred shares, depositary
shares or common stock purchasable upon such exercise or to exercise any
applicable right to vote.

EXERCISE OF SECURITIES WARRANTS

     Each securities warrant will entitle the holder thereof to purchase that
principal amount of debt securities or number of preferred shares, depositary
shares or shares of common stock, as the case may be, at such exercise price as
shall in each case be set forth in, or calculable from, the prospectus
supplement relating to the offered securities warrants. After the close of
business on the expiration date (or such later date to which such expiration
date may be extended by us), unexercised securities warrants will become void.

     Securities warrants may be exercised by delivering to the securities
warrant agent payment as provided in the applicable prospectus supplement of the
amount required to purchase the debt securities, preferred shares, depositary
shares or common stock, as the case may be, purchasable upon such exercise
together with certain information set forth on the reverse side of the
securities warrant certificate. Securities warrants will be deemed to have been
exercised upon receipt of payment of the exercise price, subject to the receipt,
within five business days, of the securities warrant certificate evidencing
those securities warrants. Upon receipt of that payment and the securities
warrant certificate properly completed and duly executed at the corporate trust
office of the Securities Warrant Agent or any other office indicated in the
applicable prospectus supplement, we will, as soon as practicable, issue and
deliver the debt securities, preferred shares, depositary shares or common
stock, as the case may be, purchasable upon that exercise. If fewer than all of
the securities warrants represented by that securities warrant certificate

                                       33
<PAGE>   67

are exercised, a new securities warrant certificate will be issued for the
remaining amount of securities warrants.

AMENDMENTS AND SUPPLEMENTS TO SECURITIES WARRANT AGREEMENTS

     The Securities Warrant Agreements may be amended or supplemented without
the consent of the holders of the securities warrants issued under those
agreements to effect changes that are not inconsistent with the provisions of
the securities warrants and that do not adversely affect the interests of the
holders of the securities warrants.

COMMON STOCK WARRANT ADJUSTMENTS

     Unless otherwise indicated in the applicable prospectus supplement, the
exercise price of, and the number of shares of common stock covered by, a common
stock warrant are subject to adjustment in certain events, including:

     - the issuance of capital stock as a dividend or distribution on the common
       stock;

     - subdivisions and combinations of the common stock;

     - the issuance to all holders of common stock of rights or warrants
       entitling them to subscribe for or purchase common stock within 45 days
       after the date fixed for the determination of the stockholders entitled
       to receive those rights or warrants, at less than the Current Market
       Price (as defined in the Securities Warrant Agreement for that series of
       common stock warrants); and

     - the distribution to all holders of common stock of our evidences of
       indebtedness or assets (excluding certain cash dividends and
       distributions described below) or rights or warrants (excluding those
       referred to above).

     In the event that we distribute any rights or warrants to acquire capital
stock pursuant to the penultimate clause set forth above (the "CAPITAL STOCK
RIGHTS"), pursuant to which separate certificates representing those capital
stock rights will be distributed subsequent to the initial distribution of those
capital stock rights (whether or not that distribution shall have occurred prior
to the date of the issuance of a series of common stock warrants), that
subsequent distribution will be deemed to be the distribution of those capital
stock rights; provided that we may, in lieu of making any adjustment in the
exercise price of and the number of shares of common stock covered by a common
stock warrant upon a distribution of separate certificates representing those
capital stock rights, make proper provision so that each holder of such a common
stock warrant who exercises that common stock warrant (or any portion of that
common stock warrant), (a) before the record date for the distribution of
separate certificates will be entitled to receive upon that exercise shares of
common stock issued with capital stock rights, and (b) after that record date
and prior to the expiration, redemption or termination of those capital stock
rights, will be entitled to receive upon that exercise, in addition to the
shares of common stock issuable upon that exercise, the same number of those
capital stock rights as would a holder of the number of shares of common stock
that such common stock warrant so exercised would have entitled the holder
thereof to acquire in accordance with the terms and provisions applicable to the
capital stock rights if that common stock warrant was exercised immediately
prior to the record date for that distribution. Common stock owned by or held
for our account or the account of any majority owned subsidiary of ours shall
not be deemed outstanding for the purpose of any adjustment.

     No adjustment in the exercise price of and the number of shares of common
stock covered by a common stock warrant will be made for regular quarterly or
other periodic or recurring cash dividends or distributions, or for cash
dividends or distributions to the extent paid from retained earnings. No
adjustment will be required unless that adjustment would require a change of at
least 1% in the exercise price then in effect; provided, that any adjustment not
so made will be carried forward and taken into account in any subsequent
adjustment; provided, further, that any adjustment not so made shall be made no
later than three years after the occurrence of the event requiring that
adjustment to be made or carried forward. Except as stated above, the exercise
price of and the number of shares of common stock covered
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<PAGE>   68

by a common stock warrant will not be adjusted for the issuance of common stock
or any securities convertible into or exchangeable for common stock, or
securities carrying the right to purchase any of the foregoing.

     In the case of (a) a reclassification or change of the common stock, (b) a
consolidation or merger involving us, or (c) our sale or conveyance to another
corporation of our property and assets as an entirety or substantially as an
entirety, in each case, as a result of which holders of our common stock will be
entitled to receive stock, securities, other property or assets (including cash)
with respect to, or in exchange for, their common stock, the holders of the
common stock warrants then outstanding will be entitled thereafter to convert
those common stock warrants into the kind and amount of shares of stock and
other securities or property which they would have received upon such
reclassification, change, consolidation, merger, sale or conveyance had those
common stock warrants been exercised immediately prior to that reclassification,
change, consolidation, merger, sale or conveyance.

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<PAGE>   69

                            EUROPEAN MONETARY UNION

     Stage III of the European Economic and Monetary Union ("STAGE III")
commenced on January 1, 1999 for those member states of the European Union that
satisfied the economic convergence criteria set forth in the Treaty on European
Union. On March 25, 1998, the European Commission officially recommended that
eleven of the member states of the European Union be allowed to participate in
Stage III; these eleven member states are Austria, Belgium, Finland, France,
Germany, Ireland, Italy, Luxembourg, the Netherlands, Portugal and Spain
(collectively, the "PARTICIPATING MEMBER STATES"). It is possible that
additional member states of the European Union may participate in Stage III in
the future, in which case each such additional member state will also become a
"Participating Member State." Certain of the foreign currencies in which debt
securities may be denominated or payments in respect of debt warrants may be due
or by which amounts due on the offered securities may be calculated may be
issued by Participating Member States (each such country, a "RELEVANT
JURISDICTION" with respect to such offered securities). Stage III includes the
introduction of a single currency (the "EURO") which will be legal tender in the
Participating Member States, existing in parallel with the present national
currency of each Participating Member State. It is currently anticipated that on
and after January 1, 2002, the national currencies of Participating Member
States will cease to exist and the sole legal tender in such states will be the
Euro. It is anticipated that the European Union will adopt regulations or other
legislation providing specific rules for the introduction of the Euro in
substitution for the respective current national currencies of such member
states, which regulations or legislation may be supplemented by legislation of
the individual member states. The laws and regulations of the European Union
(and, if any, of such Relevant Jurisdiction) relating to the Euro implemented
pursuant to or by virtue of the Treaty on European Union may apply to certain of
the securities offered pursuant to this prospectus or the Indentures. Such laws
and regulations, and future market conventions applicable in the European Union
to securities similar to the relevant offered securities, may be inconsistent in
varying degrees with the terms and conditions of the relevant offered securities
established at their issuance. To the extent that references in an Indenture or
any relevant offered securities or in the terms and conditions of any relevant
offered securities to any business day, day-count, day-count fraction or other
convention are inconsistent with such European Union laws, regulations or market
conventions that are applicable to securities similar to the relevant offered
securities held in international clearing systems, we, in our discretion (but
after consultation with the applicable trustee or warrant agent, and with any
principal paying agent located in a European Union member state), may amend such
references and terms and conditions to be in harmony with, or to otherwise
comply with, such laws, regulations and/or market conventions. Any such
amendment will be effected without the necessity of obtaining the consent of any
holder of the relevant offered securities.

     If, following the commencement of Stage III, we have the option, pursuant
to applicable law, to make payments of principal of, or interest on, or any
other amounts in respect of, the relevant offered securities, or to calculate
amounts due thereon, in either the current national currency of a Relevant
Jurisdiction or Euro, we will make those payments or calculations in that
national currency or Euro in our sole discretion. To the extent that the
introduction of the Euro necessitates the rounding up or down of certain amounts
or quotations expressed in Euros with respect to the relevant offered
securities, that rounding will be made in conformity with prevailing market
conventions in the European Union or, in the absence of an applicable market
convention, to the nearest Euro cent.

     The circumstances and consequences described in this section and any
resultant amendment to the terms and conditions of the relevant offered
securities will not entitle any holder of those offered securities (a) to any
legal remedy, including, without limitation, redemption, rescission, notice,
repudiation, adjustment or renegotiation of the terms and conditions of the
offered securities or an Indenture, or (b) to raise any defense or make any
claim (including, without limitation, claims of breach, force majeure,
frustration of purpose or impracticability) or any other claim for compensation,
damages or any other relief.

                                       36
<PAGE>   70

                              PLAN OF DISTRIBUTION

     We may sell the securities offered pursuant to this prospectus in any of
two ways: (a) through agents or underwriters, or (b) directly to one or more
purchasers. The prospectus supplement will supply the details of the plan of
distribution, including the name or names of any underwriters or agents, the
purchase price of those offered securities, our proceeds from the sale, any
underwriting discounts or agency fees and other items constituting underwriters'
or agents' compensation, the initial public offering price, any discounts or
concessions allowed or reallowed or paid to dealers, and any securities
exchanges on which those offered securities may be listed.

     Underwriters, dealers and agents that participate in the distribution of
the securities offered pursuant to this prospectus may be underwriters as
defined in the Securities Act. Any discounts or commissions they receive from us
and any profits they receive on the resale of the offered securities may be
treated as underwriting discounts and commissions under the Securities Act. We
have agreements with the underwriters and agents to indemnify them against
certain civil liabilities, including liabilities under the Securities Act.
Agents and underwriters may engage in transactions with, or perform services
for, us in the ordinary course of business. This includes commercial banking and
investment banking transactions.

     If underwriters are used in the sale, they will acquire the securities
offered pursuant to this prospectus for their own account. The underwriters will
resell the securities in one or more transactions, including negotiated
transactions. These sales will be made at a fixed public offering price or at
varying prices determined at the time of the sale. We may offer the debt
securities to the public through an underwriting syndicate or through a single
underwriter.

     Each underwriter, dealer and agent participating in the distribution of any
debt securities that are issuable as Bearer Securities will agree that, in
connection with the original issuance of those Bearer Securities, it will not
offer, sell or deliver, directly or indirectly, Bearer Securities to a U.S.
person or to any person within the United States, except to the extent permitted
under U.S. Treasury regulations.

     All offered securities, except for the common stock, will be new issues of
securities with no established trading market. Any underwriters to whom we sell
offered securities for public offering and sale may make a market in the
securities offered pursuant to this prospectus, but such underwriters will not
be obligated to do so and may discontinue any market making at any time without
notice. We can give no assurance concerning the liquidity of the trading market
for any of the securities offered pursuant to this prospectus.

                             VALIDITY OF SECURITIES

     Ms. Jennie P. Carlson, Esq., Senior Vice President, General Counsel and
Secretary of Firstar, will pass upon the validity of the offered securities. As
of March 31, 1999, Ms. Carlson was the beneficial owner of 47,654 shares of
Common Stock and had options to acquire 45,000 additional shares.

                                    EXPERTS

     The consolidated financial statements of Firstar as of December 31, 1998
and 1997 and for each of the three years in the period ended December 31, 1998,
incorporated by reference in this prospectus, have been audited by Arthur
Andersen LLP, independent public accountants, as indicated in their report with
respect thereto, and are incorporated herein in reliance upon the authority of
said firm as experts in giving said report.

     The consolidated financial statements of Mercantile Bancorporation Inc. at
December 31, 1998, 1997 and 1996 and for the three years ended December 31,
1998, are incorporated by reference in the Registration Statement to which this
prospectus pertains from Firstar's Current Report on Form 8-K filed on May 4,
1999 (as amended on May 19, 1999), have been audited by KPMG LLP, independent
auditors, as set forth in their report on those consolidated financial
statements incorporated herein in reliance upon such report given on the
authority of such firm as experts in accounting and auditing.
                                       37
<PAGE>   71

                           FORWARD-LOOKING STATEMENTS

     This prospectus and accompanying prospectus supplements contain or
incorporate statements that constitute "forward-looking statements" within the
meaning of Section 27A of the Securities Act and Section 21E of the Exchange
Act. Those statements can be identified by the use of forward-looking language
such as "will likely result," "may," "are expected to," "is anticipated,"
"estimate," "projected," "intends to," or other similar words. Our actual
results, performance or achievements could differ materially from the results
expressed in, or implied by, those forward-looking statements. Those statements
are subject to certain risks and uncertainties, including but not limited to,
certain risks described in the applicable prospectus supplement. When
considering those forward-looking statements, you should keep in mind these
risks, uncertainties and other cautionary statements made in this prospectus and
the applicable prospectus supplement. You should not place undue reliance on any
forward-looking statement which speaks only as of the date made.

                                       38
<PAGE>   72

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

     The following table sets forth the costs and expenses, other than
underwriting discounts and commissions, payable in connection with the sale and
distribution of the securities being registered. All amounts except the
Commission registration fee are estimated.

<TABLE>
<CAPTION>
ITEM                                                           AMOUNT
- ----                                                          --------
<S>                                                           <C>
Registration fee............................................  $278,000
Blue Sky fees and expenses..................................     7,500
Printing and engraving expenses.............................    20,000
Legal fees and expenses.....................................   120,000
Accounting fees and expenses................................    15,000
Transfer Agent and Registrar fees...........................     4,000
Trustee fees and expenses...................................    30,000
Miscellaneous...............................................         0
                                                              --------
     Total..................................................  $474,500
                                                              ========
</TABLE>

ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Pursuant to the provisions of Sections 180.0850 through 180.0859,
inclusive, of the Wisconsin Business Corporation Law, directors and officers of
Firstar are entitled to mandatory indemnification from Firstar against certain
liabilities and expenses (a) to the extent such officers or directors are
successful in the defense of a proceeding, and (b) in proceedings in which the
director or officer is not successful in defense thereof, unless it is
determined that the director or officer breached or failed to perform his or her
duties to Firstar and such breach or failure constituted: (1) a willful failure
to deal fairly with Firstar or its shareholders in connection with a matter in
which the director or officer had a material conflict of interest; (2) a
violation of the criminal law unless the director or officer had reasonable
cause to believe his or her conduct was lawful or had no reasonable cause to
believe his or her conduct was unlawful; (3) a transaction from which the
director or officer derived an improper personal profit; or (4) willful
misconduct. Additionally, under Section 180.0828 of the Wisconsin Business
Corporation Law, directors of Firstar are not subject to personal liability to
Firstar, its shareholders or any person asserting rights on behalf thereof for
certain breaches or failures to perform any duty resulting solely from their
status as directors, except in circumstances paralleling those outlined above.

     Firstar's By-Laws contain similar indemnification provisions as to
directors and officers of Firstar. Firstar has not entered into individual
indemnity agreements with its current directors.

     Expenses for the defense of any action for which indemnification may be
available may be advanced by Firstar under certain circumstances.

     Firstar maintains a liability insurance policy for officers and directors.

                                      II-1
<PAGE>   73

ITEM 16.  EXHIBITS AND FINANCIAL STATEMENTS AND SCHEDULES

     (a) Exhibits

     The following Exhibits are filed herewith or incorporated herein by
reference:

<TABLE>
<CAPTION>
EXHIBIT
  NO.                       DESCRIPTION OF EXHIBIT
- -------                     ----------------------
<S>      <C>
 1.1     Form of Underwriting Agreement for Debt Securities*
 1.2     Form of Underwriting Agreement for Preferred Stock*
 1.3     Form of Underwriting Agreement for Common Stock*
 1.4     Form of Distribution Agreement
 3.1     Articles of Incorporation of Firstar Corporation
         (incorporated by reference to Exhibit 3.1 of Registration
         Statement No. 333-64099 of Firstar)
 3.2     By-Laws of Firstar Corporation (incorporated by reference to
         Exhibit 3.2 of Registration Statement No. 333-64099 of
         Firstar)
 4.1     Form of Senior Indenture
 4.2     Form of Senior Registered Note**
 4.3     Form of Senior Medium-Term Note (Fixed Rate)**
 4.4     Form of Senior Medium-Term Note (Floating Rate)**
 4.5     Form of Subordinated Indenture
 4.6     Form of Subordinated Registered Note**
 4.7     Form of Subordinated Medium-Term Note (Fixed Rate)**
 4.8     Form of Subordinated Medium-Term Note (Floating Rate)**
 4.9     Form of Certificate of Designations for Preferred Stock**
 4.10    Form of Certificate for Preferred Stock**
 4.11    Form of Certificate for Convertible Preferred Stock**
 4.12    Form of Certificate for Common Stock**
 4.13    Form of Deposit Agreement**
 4.14    Form of Depositary Receipt (included within Exhibit 4.13)**
 4.15    Form of Warrant Agreement for Debt Securities**
 4.16    Form of Warrant Agreement for Preferred Stock**
 4.17    Form of Warrant Agreement for Common Stock**
 5.1     Opinion of Jennie P. Carlson, Esq.
 8.1     Opinion of Wachtell, Lipton, Rosen & Katz regarding certain
         federal income tax matters**
12.1     Statement Re Computation of Ratios
23.1     Consent of Arthur Andersen LLP
23.2     Consent of KPMG LLP
23.3     Consent of Jennie P. Carlson, Esq. (included within Exhibit
         5.1)
24.1     Powers of Attorney
25.1     Statement of Eligibility under the Trust Indenture Act of
         1939 of a corporation designated to act as Trustee**
</TABLE>

- ---------------
 * To be filed by amendment or by filing of a Form 8-K subsequently incorporated
   by reference.

** To be filed by amendment.

     (b) Financial Statements and Schedules

     Either not applicable or shown in the financial statements or notes
thereto.

                                      II-2
<PAGE>   74

ITEM 17.  UNDERTAKINGS

     The undersigned Registrant hereby undertakes:

     (1) To file, during any period in which offers or sales are being made, a
         post-effective amendment to this Registration Statement:

        (i)  to include any prospectus required by Section 10(a)(3) of the
             Securities Act;

        (ii)  to reflect in the prospectus any facts or events arising after the
              effective date of the Registration Statement (or the most recent
              post-effective amendment thereof) which, individually or in the
              aggregate, represent a fundamental change in the information set
              forth in the Registration Statement (notwithstanding the
              foregoing, any increase or decrease in the volume of securities
              offered (if the total dollar value of securities offered would not
              exceed that which was registered) and any deviation from the low
              or high end of the estimated maximum offering range may be
              reflected in the form of prospectus filed with the Commission
              pursuant to Rule 424(b) if, in the aggregate, the changes in
              volume and price represent no more than a 20 percent change in the
              maximum total offering price set forth in the "Calculation of
              Registration Fee" table in the effective Registration Statement);
              and

        (iii) to include any material information with respect to the plan of
              distribution not previously disclosed in the Registration
              Statement or any material change to such information in the
              Registration Statement.

     (2) That, for the purpose of determining any liability under the Securities
         Act, each such post-effective amendment will be deemed to be a new
         registration statement relating to the securities offered therein, and
         the offering of such securities at that time will be deemed to be the
         initial bona fide offering thereof.

     (3) To remove from registration by means of a post-effective amendment any
         of the securities being registered which remain unsold at the
         termination of the offering.

     (4) For purposes of determining any liability under the Securities Act, the
         information omitted from the form of prospectus filed as part of this
         Registration Statement in reliance upon Rule 430A and contained in a
         form of prospectus filed by the Registrant pursuant to Rule 424(b)(1)
         or (4) or 497 (h) under the Securities Act shall be deemed to be part
         of this Registration Statement as of the time it was declared
         effective. For the purpose of determining any liability under the
         Securities Act, each post-effective amendment that contains a form of
         prospectus shall be deemed to be a new Registration Statement relating
         to the securities offered therein, and the offering of such securities
         at that time shall be deemed to be the initial bona fide offering
         thereof.

     (5) For purposes of determining any liability under the Securities Act,
         each filing of the Registrant's annual report pursuant to Section 13(a)
         or 15(d) of the Exchange Act (and, where applicable, each filing of an
         employee benefit plan's annual report pursuant to Section 15(d) of the
         Exchange Act) that is incorporated by reference in the Registration
         Statement shall be deemed to be a new registration statement relating
         to the securities offered therein, and the offering of such securities
         at that time shall be deemed to be the initial bona fide offering
         thereof.

     (6) To file an application for the purpose of determining the eligibility
         of the trustee to act under subsection (a) of Section 310 of the Trust
         Indenture Act in accordance with the rules and regulations prescribed
         by the commission under Section 305(b)(2) of the Act.

                                      II-3
<PAGE>   75

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing this Registration Statement on Form S-3 or amendment
thereto and has duly caused this Registration Statement or amendment thereto to
be signed on its behalf by the undersigned, thereunto duly authorized, in
Milwaukee, Wisconsin, on June 4, 1999.

                                          FIRSTAR CORPORATION
                                          (Registrant)

                                          By: /s/ JENNIE P. CARLSON
                                            ------------------------------------
                                              Name: Jennie P. Carlson
                                              Title: Senior Vice President,
                                                    General Counsel and
                                              Secretary

     Pursuant to the requirements of the Securities Act, this Registration
Statement or amendment thereto has been signed by the following persons in the
capacities indicated on June 4, 1999.

<TABLE>
<CAPTION>
                 SIGNATURE                                         TITLE
                 ---------                                         -----
<C>                                             <S>

          /s/ JERRY A. GRUNDHOFER               President, Chief Executive Officer and
- --------------------------------------------    Director
            Jerry A. Grundhofer

          /s/ ROGER L. FITZSIMONDS              Chairman and Director
- --------------------------------------------
            Roger L. Fitzsimonds

            /s/ DAVID M. MOFFETT                Vice Chairman and Chief Financial Officer
- --------------------------------------------
              David M. Moffett

             /s/ JAMES D. HOGAN                 Senior Vice President and Controller
- --------------------------------------------
               James D. Hogan

                     *                          Director
- --------------------------------------------
               Paul M. Baker

                     *                          Director
- --------------------------------------------
             Michael E. Batten

                     *                          Director
- --------------------------------------------
          James R. Bridgeland, Jr.

                     *                          Director
- --------------------------------------------
         Laurance L. Browning, Jr.

                     *                          Director
- --------------------------------------------
            Victoria B. Buyniski
</TABLE>

                                      II-4
<PAGE>   76

<TABLE>
<CAPTION>
                 SIGNATURE                                         TITLE
                 ---------                                         -----
<C>                                             <S>
                     *                          Director
- --------------------------------------------
             Robert C. Buchanan

                     *                          Director
- --------------------------------------------
             Samuel M. Cassidy

                     *                          Director
- --------------------------------------------
           George M. Chester, Jr.

                     *                          Director
- --------------------------------------------
             V. Anderson Coombe

                     *                          Director
- --------------------------------------------
            John C. Dannemiller

                     *                          Director
- --------------------------------------------
              James L. Forbes

                     *                          Director
- --------------------------------------------
              David B. Garvin

                     *                          Director
- --------------------------------------------
             J. P. Hayden, Jr.

                     *                          Director
- --------------------------------------------
               Joe F. Hladky

                     *                          Director
- --------------------------------------------
               Roger L. Howe

                     *                          Director
- --------------------------------------------
         Thomas J. Klinedinst, Jr.

                     *                          Director
- --------------------------------------------
              William H. Lacy

                     *                          Director
- --------------------------------------------
              Sheldon B. Lubar

                     *                          Director
- --------------------------------------------
             Kenneth P. Manning

                     *                          Director
- --------------------------------------------
          Daniel F. McKeithan, Jr.

                     *                          Director
- --------------------------------------------
           Charles S. Mechem, Jr.
</TABLE>

                                      II-5
<PAGE>   77

<TABLE>
<CAPTION>
                 SIGNATURE                                         TITLE
                 ---------                                         -----
<C>                                             <S>
                     *                          Director
- --------------------------------------------
              Daniel J. Meyer

                     *                          Director
- --------------------------------------------
              David B. O'Maley

                     *                          Director
- --------------------------------------------
             Robert J. O'Toole

                     *                          Director
- --------------------------------------------
        O'Dell M. Owens, M.D., M.P.H

                     *                          Director
- --------------------------------------------
              Thomas E. Petry

                     *                          Director
- --------------------------------------------
               Judith D. Pyle

                     *                          Director
- --------------------------------------------
            John J. Stollenwerk

                     *                          Director
- --------------------------------------------
             Oliver W. Waddell

                     *                          Director
- --------------------------------------------
              William W. Wirtz

       * By: /s/ JERRY A. GRUNDHOFER            Attorney-in-fact for the persons indicated
- --------------------------------------------    above with a *
               Jerry A. Grundhofer
                 Attorney-in-fact
</TABLE>

                                      II-6
<PAGE>   78

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                              EXHIBIT
- -------                             -------
<C>       <S>
    1.1   Form of Underwriting Agreement for Debt Securities*
    1.2   Form of Underwriting Agreement for Preferred Stock*
    1.3   Form of Underwriting Agreement for Common Stock*
    1.4   Form of Distribution Agreement
    3.1   Articles of Incorporation of Firstar Corporation
          (incorporated by reference to Exhibit 3.1 of Registration
          Statement No. 333-64099 of Firstar)
    3.2   By-Laws of Firstar Corporation (incorporated by reference to
          Exhibit 3.2 of Registration Statement No. 333-64099 of
          Firstar)
    4.1   Form of Senior Indenture
    4.2   Form of Senior Registered Note**
    4.3   Form of Senior Medium-Term Note (Fixed Rate)**
    4.4   Form of Senior Medium-Term Note (Floating Rate)**
    4.5   Form of Subordinated Indenture
    4.6   Form of Subordinated Registered Note**
    4.7   Form of Subordinated Medium-Term Note (Fixed Rate)**
    4.8   Form of Subordinated Medium-Term Note (Floating Rate)**
    4.9   Form of Certificate of Designations for Preferred Stock**
    4.10  Form of Certificate for Preferred Stock**
    4.11  Form of Certificate for Convertible Preferred Stock**
    4.12  Form of Certificate for Common Stock**
    4.13  Form of Deposit Agreement**
    4.14  Form of Depositary Receipt (included within Exhibit 4.13)**
    4.15  Form of Warrant Agreement for Debt Securities**
    4.16  Form of Warrant Agreement for Preferred Stock**
    4.17  Form of Warrant Agreement for Common Stock**
    5.1   Opinion of Jennie P. Carlson
    8.1   Opinion of Wachtell, Lipton, Rosen & Katz regarding certain
          federal income tax matters**
   12.1   Statement Re Computation of Ratios
   23.1   Consent of Arthur Andersen LLP
   23.2   Consent of KPMG LLP
   23.3   Consent of Jennie P. Carlson, Esq. (included within Exhibit
          5.1)
   24.1   Powers of Attorney
   25.1   Statement of Eligibility under the Trust Indenture Act of
          1939 of a corporation designated to act as Trustee**
</TABLE>

- ---------------
 * To be filed by amendment or by filing of a Form 8-K subsequently incorporated
   by reference

** To be filed by amendment

<PAGE>   1
                                                                     Exhibit 1.4





                                     Firstar
                                   Corporation

                           $         Medium-Term Notes
                     Due From Nine Months From Date of Issue

                            Selling Agency Agreement


                                      , 199


[Co-agents]

Dear Sirs:

                  Firstar Corporation, a Wisconsin corporation (the "Company"),
confirms its agreement with each of you with respect to the issue and sale by
the Company of up to $             aggregate principal amount of its Medium-Term
Notes Due From Nine Months From Date of Issue (the "Notes"). The Notes will be
issued under an indenture (the "Indenture") dated as of                  , 199
between the Company and                 , as trustee (the "Trustee"). Unless
otherwise specifically provided for and set forth in a Pricing Supplement (as
defined below), the Notes will be issued in minimum denominations of $1,000 and
in denominations exceeding such amount by integral multiples of $1,000, will be
issued only in fully registered form and will have the interest rates,
maturities and, if applicable, other terms set forth in such Pricing Supplement.
The Notes will be issued, and the terms thereof established, in accordance with
the Indenture and the Medium-Term Notes Administrative Procedures attached
hereto as Exhibit A (the "Procedures") (unless a Terms Agreement (as defined in
Section 2(b)) modifies or otherwise supersedes such Procedures with respect to
the Notes issued pursuant to such Terms Agreement). The Procedures may be
amended only by written agreement of the Company and you after notice to, and
with the approval of, the Trustee. For the purposes of this Agreement, the term
"Agent" shall refer to any of you acting solely in the capacity as agent for the
Company pursuant to Section 2(a) and not as principal (collectively, the
"Agents"), the term "Purchaser" shall refer to one of you acting solely as
principal pursuant to Section 2(b) and not as agent, and the term "you" shall
refer to you collectively whether at any time any of you is acting in both such
capacities or in either such capacity. In acting under this Agreement, in
whatever capacity, each of you is acting individually and not jointly.



                                       -1-
<PAGE>   2
                  1.  Representations and Warranties.  The Company rep-
resents and warrants to, and agrees with, you as set forth below in
this Section 1.  Certain terms used in this Section 1 are defined
in paragraph (d) hereof.

                  (a) The Company meets the requirements for use of Form S-3
         under the Securities Act of 1933 (the "Act"), and has filed with the
         Securities and Exchange Commission (the "Commission") a registration
         statement on such Form (File Number: 33- ), including a basic
         prospectus, which has become effective, for the registration under the
         Act of $1,000,000,000 aggregate principal amount of securities (the
         "Securities"), including the Notes. Such registration statement, as
         amended at the date of this Agreement, meets the requirements set forth
         in Rule 415(a)(1)(ix) or (x) under the Act and complies in all other
         material respects with said Rule. The Company has included in such
         registration statement, or has filed or will file with the Commission
         pursuant to the applicable paragraph of Rule 424(b) under the Act, a
         supplement to the form of prospectus included in such registration
         statement relating to the Notes and the plan of distribution thereof
         (the "Prospectus Supplement"). In connection with the sale of Notes the
         Company proposes to file with the Commission pursuant to the applicable
         paragraph of Rule 424(b) under the Act further supplements to the
         Prospectus Supplement (each a "Pricing Supplement") specifying the
         interest rates, maturity dates and, if appropriate, other similar terms
         of the Notes sold pursuant hereto or the offering thereof.

                  (b) As of the Execution Time, on the Effective Date, when any
         supplement to the Prospectus is filed with the Commission, as of the
         date of a Terms Agreement as of the date of any acceptance by the
         Company of an offer to purchase notes hereunder and at the date of
         delivery by the Company of any Notes sold hereunder
         (a "Closing Date"), (i) the Registration Statement, as amended as of
         any such time, and the Prospectus, as supplemented as of any such
         time, and the Indenture will comply in all material respects with the
         applicable requirements of the Act, the Trust Indenture Act of 1939
         (the "Trust Indenture Act") and the Securities Exchange Act of 1934
         (the "Exchange Act") and the respective rules thereunder; (ii) the
         Registration Statement, as amended as of any such time, did not or
         will not contain any untrue statement of a material fact or omit to
         state any material fact required to be stated therein or necessary in
         order to make the statements therein not misleading; and (iii) the
         Prospectus, as supplemented as of any such time, will not contain any
         untrue statement of a material fact or omit to state a material fact
         necessary in order to make



                                       -2-
<PAGE>   3
         the statements therein, in the light of the circumstances under
         which they were made, not misleading; provided, however, that the
         Company makes no representations or warranties as to (i) that part of
         the Registration Statement which shall constitute the Statement of
         Eligibility and Qualification (Form T-1) under the Trust Indenture Act
         of the Trustee or (ii) the information contained in or omitted from the
         Registration Statement or the Prospectus (or any supplement thereto) in
         reliance upon and in conformity with information furnished in writing
         to the Company by any of you specifically for inclusion in the
         Registration Statement or the Prospectus (or any supplement thereto).

                  (c) As of the time any Notes are issued and sold hereunder,
         (i) the Indenture will constitute a valid and binding instrument
         enforceable against the Company in accordance with its terms except as
         enforcement thereof may be limited by bankruptcy, insolvency,
         reorganization, moratorium or other laws relating to or affecting
         enforcement of creditors' rights generally or by general equity
         principles, and except further as enforcement thereof may be limited by
         (A) requirements that a claim with respect to any Notes denominated
         other than in U.S. dollars (or a foreign currency or currency unit
         judgment in respect of such claim) be converted into U.S. dollars at a
         rate or exchange prevailing on a date determined pursuant to applicable
         law or (B) governmental authority to limit, delay or prohibit the
         making of payments outside the United States; (ii) such Notes will have
         been duly authorized, executed, authenticated and, when paid for by the
         purchasers thereof, will constitute legal, valid and binding
         obligations of the Company entitled to the benefits of the Indenture;
         and (iii) the Notes and the Indenture will be substantially in the form
         heretofore delivered to each Agent and conform in all material respects
         to all statements relating thereto contained in the Prospectus.

                  (d) The terms which follow, when used in this Agreement, shall
         have the meanings indicated. The term "the Effective Date" shall mean
         each date that the Registration Statement and any post-effective
         amendment or amendments thereto became or become effective and each
         date after the date hereof on which a document incorporated by
         reference in the Registration Statement is filed. "Execution Time"
         shall mean the date and time that this Agreement is executed and
         delivered by the parties hereto. "Basic Prospectus" shall mean the form
         of basic prospectus relating to the Securities contained in the
         Registration Statement at the Effective Date. "Prospectus" shall mean
         the Basic Prospectus as supplemented by the Prospectus Supplement.


                                       -3-
<PAGE>   4
         "Registration Statement" shall mean the registration statement referred
         to in paragraph (a) above, including incorporated documents, exhibits
         and financial statements, as amended at the Execution Time. "Rule 415"
         and "Rule 424" refer to such rules under the Act. Any reference herein
         to the Registration Statement, the Basic Prospectus, the Prospectus
         Supplement or the Prospectus shall be deemed to refer to and include
         the documents incorporated by reference therein pursuant to Item 12 of
         Form S-3 which were filed under the Exchange Act on or before the
         Effective Date of the Registration Statement or the issue date of the
         Basic Prospectus, the Prospectus Supplement or the Prospectus, as the
         case may be; and any reference herein to the terms "amend", "amend-
         ment" or "supplement" with respect to the Registration Statement, the
         Basic Prospectus, the Prospectus Supplement or the Prospectus shall be
         deemed to refer to and include the filing of any document under the
         Exchange Act after the Effective Date of the Registration Statement or
         the issue date of the Basic Prospectus, the Prospectus Supplement or
         the Prospectus, as the case may be, deemed to be incorporated therein
         by reference.

                  2.  Appointment of Agents; Solicitation by the Agents of
Offers to Purchase; Sales of Notes to a Purchaser.  (a)  Subject to
the terms and conditions set forth herein, the Company hereby
authorizes each of the Agents to act as its agent to solicit offers
for the purchase of all or part of the Notes from the Company.

                  On the basis of the representations and warranties, but
subject to the terms and conditions set forth herein, each of the Agents agrees,
as agent of the Company, to use its reasonable efforts to solicit offers to
purchase the Notes from the Company upon the terms and conditions set forth in
the Prospectus (and any supplement thereto) and in the Procedures. Each Agent
shall make reasonable efforts to assist the Company in obtaining performance by
each purchaser whose offer to purchase Notes has been solicited by such Agent
and accepted by the Company, but such Agent shall not, except as otherwise
provided in this Agreement, be obligated to disclose the identity of any
purchaser or have any liability to the Company in the event any such purchase is
not consummated for any reason. Except as provided in Section 2(b), under no
circumstances will any Agent be obligated to purchase any Notes for its own
account. It is understood and agreed, however, that any Agent may purchase Notes
as principal pursuant to Section 2(b).

                  The Company reserves the right, in its sole discretion, to
instruct the Agents to suspend at any time, for any


                                       -4-
<PAGE>   5
period of time or permanently, the solicitation of offers to purchase Notes.
Upon receipt of instructions from the Company, the Agents will forthwith suspend
solicitation of offers to purchase Notes from the Company until such time as the
Company has advised them that such solicitation may be resumed.

                  The Company agrees to pay each Agent a commission, on the
Closing Date with respect to each sale of Notes by the Company as a result of a
solicitation made by such Agent, in an amount equal to that percentage specified
in Schedule I hereto of the aggregate principal amount of the Notes sold by the
Company. Such commission shall be payable as specified in the Procedures.

                  Subject to the provisions of this Section and to the
Procedures, offers for the purchase of Notes may be solicited by an Agent as
agent for the Company at such time and in such amounts as such Agent deems
advisable. So long as this Agreement shall remain in effect with respect to any
Agent, the Company shall not, without the consent of any such Agent, solicit or
accept offers to purchase Notes otherwise than through one of the Agents;
provided, however, that the Company reserves the right from time to time (i) to
sell Notes directly to an investor, and (ii) to accept a specific offer to
purchase Notes solicited by, and made to the Company by or through, a dealer
other than the Agents (each an "Other Dealer"), without obtaining the prior
consent of any of the Agents, provided that (x) the Company shall give each of
the Agents notice of its decision to accept such an offer to purchase Notes in
advance of such acceptance, (y) any Other Dealer shall agree to be bound by and
subject to the terms and conditions of this Agreement binding on the
Agents (including the commission schedule attached hereto as Schedule I),
and (z) so long as this Agreement remains in effect, the Company shall not
appoint any other agent or dealer for the purpose of soliciting or receiving
offers to purchase Notes on a continuous basis.

                  If the Company shall default in its obligations to deliver
Notes to a purchaser whose offer it has accepted, the Company shall indemnify
and hold each of you harmless against any loss, claim or damage arising from or
as a result of such default by the Company.

                  (b) Subject to the terms and conditions stated herein,
whenever the Company and any of you determines that the Company shall sell Notes
directly to any of you as principal, each such sale of Notes shall be made in
accordance with the terms of this Agreement and a supplemental agreement
relating to such sale. Each such supplemental agreement (which may be


                                       -5-
<PAGE>   6
an oral or written agreement, if confirmed in writing by facsimile transmission
or otherwise) is herein referred to as a "Terms Agreement". Each Terms Agreement
shall describe the Notes to be purchased by the Purchaser pursuant thereto and
shall specify the aggregate principal amount of such Notes, the price to be paid
to the Company for such Notes, the maturity date of such Notes, the rate at
which interest will be paid on such Notes, the dates on which interest will be
paid on such Notes and the record date with respect to each such payment of
interest, the Closing Date for the purchase of such Notes, the place of delivery
of the Notes and payment therefor, the method of payment and any requirements
for the delivery of opinions of counsel, certificates from the Company or its
officers or a letter from the Company's independent public accountants as
described in Section 6(b). Any such Terms Agreement may also specify the period
of time referred to in Section 4(m). Any written Terms Agreement may be in the
form attached hereto as Exhibit B. The Purchaser's commitment to purchase Notes
shall be deemed to have been made on the basis of the representations and
warranties of the Company herein contained and shall be subject to the terms and
conditions herein set forth.

                  Delivery of the certificates for Notes sold to the Purchaser
pursuant to a Terms Agreement shall be made not later than the Closing Date
agreed to in such Terms Agreement, against payment of funds to the Company in
the net amount due to the Company for such Notes by the method and in the form
set forth in the Procedures unless otherwise agreed to between the Company and
the Purchaser in such Terms Agreement.

                  Unless otherwise agreed to between the Company and the
Purchaser in a Terms Agreement, any Note sold to a Purchaser (i) shall be
purchased by such Purchaser at a price equal to 100% of the principal amount
thereof less a percentage equal to the commission applicable to an agency sale
of a Note of identical maturity and (ii) may be resold by such Purchaser at
varying prices from time to time or, if set forth in the applicable Terms
Agreement and Pricing Supplement, at a fixed public offering price. In
connection with any resale of Notes purchased, a Purchaser may use a selling or
dealer group and may reallow to any broker or dealer any portion of the discount
or commission payable pursuant hereto.

                  3. Offering and Sale of Notes.  Each Agent and the Company
agree to perform the respective duties and obligations specifically provided to
be performed by them in the Procedures.



                                       -6-
<PAGE>   7
                  4.  Agreements.  The Company agrees with you that:

                  (a) Prior to the termination of the offering of the Notes
         (including by way of resale by a Purchaser of Notes), the Company will
         not file any amendment of the Registration Statement or supplement to
         the Prospectus (except for (i) periodic or current reports filed under
         the Exchange Act, (ii) a supplement relating to any offering of Notes
         providing solely for the specification of or a change in the maturity
         dates, interest rates, issuance prices or other similar terms of any
         Notes or (iii) a supplement relating to an offering of Securities other
         than the Notes) unless the Company has furnished each of you a copy for
         your review prior to filing and given each of you a reasonable
         opportunity to comment on any such proposed amendment or supplement.
         Subject to the foregoing sentence, the Company will cause each
         supplement to the Prospectus to be filed with the Commission pursuant
         to the applicable paragraph of Rule 424(b) within the time period
         prescribed and will provide evidence of such filing. The Company will
         promptly advise each of you (i) when the Prospectus, and any
         supplement thereto, shall have been filed with the Commission pursuant
         to Rule 424(b), (ii) when, prior to termination of any offering of
         Notes, any amendment of the Registration Statement shall have been
         filed or become effective, (iii) of any request by the Commission for
         any amendment of the Registration Statement or supplement to the
         Prospectus or for any additional information, (iv) of the issuance by
         the Commission of any stop order suspending the effectiveness of the
         Registration Statement or the institution or threatening of any
         proceeding for that purpose and (v) of the receipt by the Company of
         any notification with respect to the suspension of the qualification of
         the Notes for sale in any jurisdiction or the initiation or threatening
         of any proceeding for such purpose. The Company will make every
         reasonable effort to prevent the issuance of any such stop order and,
         if issued, to obtain as soon as possible the withdrawal thereof.

                  (b) If, at any time when a prospectus relating to the Notes is
         required to be delivered under the Act, any event occurs as a result of
         which the Prospectus as then supplemented would include any untrue
         statement of a material fact or omit to state any material fact
         necessary to make the statements therein, in the light of the
         circumstances under which they were made, not misleading, or if it
         shall be necessary to amend the Registration Statement or to
         supplement the Prospectus to comply with the Act or the Exchange Act or
         the respective rules thereunder, the


                                       -7-
<PAGE>   8
         Company promptly will (i) notify each of you to suspend solicitation of
         offers to purchase Notes (and, if so notified by the Company, each of
         you shall forthwith suspend such solicitation and cease using the
         Prospectus as then supplemented), (ii) prepare and file with the
         Commission, subject to the first sentence of paragraph (a) of this
         Section 4, an amendment or supplement which will correct such statement
         or omission or effect such compliance and (iii) supply any supplemented
         Prospectus to each of you in such quantities as you may reasonably
         request. If such amendment or supplement, and any documents,
         certificates and opinions furnished to each of you pursuant to
         paragraph (g) of this Section 4 in connection with the preparation or
         filing of such amendment or supplement are satisfactory in all respects
         to you, you will, upon the filing of such amendment or supplement with
         the Commission and upon the effectiveness of an amendment to the
         Registration Statement, if such an amendment is required, resume your
         obligation to solicit offers to purchase Notes hereunder.

                  (c) The Company, during the period when a prospectus relating
         to the Notes is required to be delivered under the Act, will file
         promptly all documents required to be filed with the Commission
         pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act and
         will furnish to each of you copies of such documents. In addition, on
         or prior to the date on which the Company makes any announcement to the
         general public concerning earnings or concerning any other event which
         is required to be described, or which the Company proposes to describe,
         in a document filed pursuant to the Exchange Act, the Company will
         furnish to each of you the information contained or to be contained in
         such announcement. The Company will notify each of you of (i) any
         decrease in the rating of the Notes or any other debt securities of the
         Company by any "nationally recognized statistical rating organization"
         (as defined for purposes of Rule 436(g) under the Act) and (ii) any
         notice given of any intended or potential decrease in any such rating
         or of a possible change in any such rating that does not indicate the
         direction of the possible change, as soon as the Company learns of any
         such decrease or notice.

                  (d) As soon as practicable, the Company will make generally
         available to its security holders and to each of you an earnings
         statement or statements of the Company and its subsidiaries which will
         satisfy the provisions of Section 11(a) of the Act and Rule 158 under
         the Act.



                                       -8-
<PAGE>   9
                  (e) The Company will furnish to each of you and your counsel,
         without charge, copies of the Registration Statement (including
         exhibits thereto) and, so long as delivery of a prospectus may be
         required by the Act, as many copies of the Prospectus and any
         supplement thereto as you may reasonably request.

                  (f) The Company will arrange for the qualification of the
         Notes for sale under the laws of such jurisdictions as any of you may
         designate, will maintain such qualifications in effect so long as
         required for the distribution of the Notes, and will arrange for the
         determination of the legality of the Notes for purchase by
         institutional investors.

                  (g) The Company shall furnish to each of you such information,
         documents, certificates of officers of the Company and opinions of
         counsel for the Company relating to the business, operations and
         affairs of the Company, the Registration Statement, the Prospectus, and
         any amendments thereof or supplements thereto, the Indenture, the
         Notes, this Agreement, the Procedures and the performance by the
         Company and you of its and your respective obligations hereunder and
         thereunder as any of you may from time to time reasonably request.

                  (h) The Company shall, whether or not any sale of the Notes is
         consummated, (i) pay all expenses incident to the performance of its
         obligations under this Agreement and any Terms Agreement, including the
         fees and disbursements of its accountants and counsel, the cost of
         printing or other production and delivery of the Registration
         Statement, the Prospectus, all amendments thereof and supplements
         thereto, the Indenture, this Agreement, any Terms Agreement and all
         other documents relating to the offering, the cost of preparing,
         printing, packaging and delivering the Notes, the fees and
         disbursements, including fees of counsel, incurred in compliance with
         Section 4(f), the fees and disbursements of the Trustee and the fees of
         any agency that rates the Notes, (ii) reimburse each of you as
         requested for all out-of-pocket expenses (including without limitation
         advertising expenses), if any, incurred by you in connection with this
         Agreement which are approved by the Company and (iii) pay the
         reasonable fees and expenses of your counsel incurred in connection
         with this Agreement.

                  (i) Each acceptance by the Company of an offer to purchase
         Notes will be deemed to be an affirmation that its representations and
         warranties contained in this


                                       -9-
<PAGE>   10
         Agreement are true and correct at the time of such acceptance, as
         though made at and as of such time, and a covenant that such
         representations and warranties will be true and correct at the time of
         delivery to the purchaser of the Notes relating to such acceptance, as
         though made at and as of such time (it being understood that for
         purposes of the foregoing affirmation and covenant such
         representations and warranties shall relate to the Registration
         Statement and Prospectus as amended or supplemented at each such time).
         Each such acceptance by the Company of an offer for the purchase of
         Notes shall be deemed to constitute an additional representation,
         warranty and agreement by the Company that, as of the settlement date
         for the sale of such Notes, after giving effect to the issuance of such
         Notes, of any other Notes to be issued on or prior to such settlement
         date and of any other Securities to be issued and sold by the Company
         on or prior to such settlement date, the aggregate amount of Securities
         (including any Notes) which have been issued and sold by the Company
         will not exceed the amount of Securities registered pursuant to the
         Registration Statement.

                  (j) Each time that the Registration Statement or the
         Prospectus is amended or supplemented (other than by an amendment or
         supplement relating to any offering of Securities other than the Notes
         or providing solely for the specification of or a change in the
         maturity dates, the interest rates, the issuance prices or other
         similar terms of any Notes sold pursuant hereto), the Company will
         deliver or cause to be delivered promptly to each of you, or at the
         request of any Agent on the date of delivery of any Note sold
         pursuant to a Terms Agreement with such Agent, a certificate
         of the Company, signed by the Chairman of the Board or the President
         and the principal financial or accounting officer of the Company, dated
         the date of the effectiveness of such amendment or the date of the
         filing of such supplement, in form reasonably satisfactory to you, of
         the same tenor as the certificate referred to in Section 5(d) but
         modified to relate to the last day of the fiscal quarter for which
         financial statements of the Company were last filed with the Commission
         and to the Registration Statement and the Prospectus as amended and
         supplemented to the time of the effectiveness of such amendment or the
         filing of such supplement.

                  (k) Each time that the Registration Statement or the
         Prospectus is amended or supplemented (other than by an amendment or
         supplement (i) relating to any offering of Securities other than the
         Notes, (ii) providing solely for the specification of or a change in
         the maturity dates, the interest rates, the issuance prices or other
         similar terms of any Notes sold pursuant hereto or (iii) setting


                                      -10-
<PAGE>   11
         forth or incorporating by reference financial statements or other
         information as of and for a fiscal quarter, unless, in the case of
         clause (iii) above, in the reasonable judgment of any of you, such
         financial statements or other information are of such a nature that an
         opinion of counsel should be furnished), or at the request of any
         Agent on the date of delivery of any Note sold pursuant to a
         Terms Agreement with such Agent,  the Company shall furnish or
         cause to be furnished promptly to each of you a written opinion of
         counsel of the Company satisfactory to each of you, dated the date of
         the effectiveness of such amendment or the date of the filing of such
         supplement, in form satisfactory to each of you, of the same tenor as
         the opinion referred to in Section 5(b) but modified to relate to the
         Registration Statement and the Prospectus as amended and supplemented
         to the time of the effectiveness of such amendment or the filing of
         such supplement or, in lieu of such opinion, counsel last furnishing
         such an opinion to you may furnish each of you with a letter to the
         effect that you may rely on such last opinion to the same extent as
         though it were dated the date of such letter authorizing reliance
         (except that statements in such last opinion will be deemed to relate
         to the Registration Statement and the Prospectus as amended and
         supplemented to the time of the effectiveness of such amendment or the
         filing of such supplement).

                  (l) Each time that the Registration Statement or the
         Prospectus is amended or supplemented to include or incorporate
         amended or supplemental financial information, or at the request of
         any Agent on the date of delivery of any Note sold pursuant to a
         Terms Agreement with such Agent,  the Company shall cause
         its independent public accountants promptly to furnish each of you a
         letter, dated the date of the effectiveness of such amendment or the
         date of the filing of such supplement, in form satisfactory to each of
         you, of the same tenor as the letter referred to in Section 5(e) with
         such changes as may be necessary to reflect the amended and
         supplemental financial information included or incorporated by
         reference in the Registration Statement and the Prospectus, as amended
         or supplemented to the date of such letter; provided, however, that, if
         the Registration Statement or the Prospectus is amended or supplemented
         solely to include or incorporate by reference financial information as
         of and for a fiscal quarter, the Company's independent public
         accountants may limit the scope of such letter to the unaudited
         financial statements, the related "Management's Discussion and Analysis
         of Financial Condition and Results of Operations" and any other
         information of an accounting, financial or statistical nature included
         in such amendment or supplement, unless, in the reasonable judgment of
         any of you, such letter should cover other information or changes in
         specified financial statement line items.



                                      -11-
<PAGE>   12
                  (m) During the period, if any, specified (whether orally or in
         writing) in any Terms Agreement, the Company shall not, without the
         prior consent of the Purchaser thereunder, offer, sell or contract to
         sell, or otherwise dispose of, directly or indirectly, or announce the
         offering of, any debt securities issued or guaranteed by the Company
         (other than the Notes being sold pursuant to such Terms Agreement).

                  (n) The Company confirms as of the date hereof, and each
         acceptance by the Company of an offer to purchase Notes will be deemed
         to be an affirmation, that the Company is in compliance with all
         provisions of Section 1 of Laws of Florida, Chapter 92-198, An Act
         Relating to Disclosure of Doing Business with Cuba, and the Company
         further agrees that if it commences engaging in business with the
         government of Cuba or with any person or affiliate located in Cuba
         after the date the Registration Statement becomes or has become
         effective with the Securities and Exchange Commission or with the
         Florida Department of Banking and Finance (the "Department"),
         whichever date is later, or if the information reported in the
         Prospectus, if any, concerning the Company's business with Cuba or with
         any person or affiliate located in Cuba changes in any material way,
         the Company will provide the Department notice of such business or
         change, as appropriate, in a form acceptable to the Department.

                  5. Conditions to the Obligations of the Agents.  The
         obligations of each Agent to solicit offers to purchase the Notes shall
         be subject to the accuracy of the representations and warranties on the
         part of the Company contained herein as of the Execution Time, on the
         Effective Date, when any supplement to the Prospectus is filed with the
         Commission and as of each Closing Date, to the accuracy of the
         statements of the Company made in any certificates pursuant to the
         provisions hereof, to the performance by the Company of its obligations
         hereunder and to the following additional conditions:

                  (a) If filing of the Prospectus, or any supplement thereto, is
         required pursuant to Rule 424(b), the Prospectus, and any such
         supplement, shall have been filed in the manner and within the time
         period required by Rule 424(b); and no stop order suspending the
         effectiveness of the Registration Statement shall have been issued and
         no proceedings for that purpose shall have been instituted or
         threatened.


                                      -12-
<PAGE>   13
                  (b) The Company shall have furnished to each Agent the opinion
         of                           , counsel for the Company, dated the
         Execution Time, to the effect that:

                           (i) each of the Company and Firstar Bank, National
                  Association (the "Bank") has been duly incorporated and is
                  validly existing as a corporation in good standing under the
                  laws of the jurisdiction in which it is chartered or
                  organized, with full corporate power and authority to own its
                  properties and conduct its business as described in the
                  Prospectus, and is duly qualified to do business as a foreign
                  corporation and is in good standing under the laws of each
                  jurisdiction which requires such qualification wherein it owns
                  or leases material properties or conducts material business;
                  and the Company is duly registered as a bank holding company
                  under the Bank Holding Company Act of 1956, as amended;

                           (ii) all the outstanding shares of capital stock of
                  the Bank have been duly and validly authorized and issued and
                  are fully paid and nonassessable, and, except as otherwise set
                  forth in the Prospectus, all outstanding shares of capital
                  stock of the Bank are owned by the Company either directly or
                  through wholly owned subsidiaries free and clear of any
                  perfected security interest and, to the knowledge of such
                  counsel, after due inquiry, any other security interests,
                  claims, liens or encumbrances;

                           (iii) the Company's authorized equity capitalization
                  is as set forth in the Prospectus; and the Notes conform to
                  the description thereof contained in the Prospectus (subject
                  to the insertion in the Notes of the maturity dates, the
                  interest rates and other similar terms thereof which will be
                  described in supplements to the Prospectus as contemplated by
                  the fourth sentence of Section 1(a) of this Agreement);

                           (iv) the Indenture has been duly authorized, executed
                  and delivered, has been duly qualified under the Trust
                  Indenture Act, and constitutes a legal, valid and binding
                  instrument enforceable against the Company in accordance with
                  its terms except as enforcement thereof may be limited by
                  bankruptcy, insolvency, reorganization, moratorium or other
                  laws relating to or affecting enforcement of creditors' rights
                  generally or by general equity principles, and except further
                  as enforcement thereof may be limited by (i) requirements that
                  a claim with respect to any


                                      -13-

<PAGE>   14
                  Notes denominated other than in U.S. dollars (or a foreign
                  currency or currency unit judgment in respect of such claim)
                  be converted into U.S. dollars at a rate or exchange
                  prevailing on a date determined pursuant to applicable law or
                  (ii) governmental authority to limit, delay or prohibit the
                  making of payments outside the United States; and the Notes
                  have been duly authorized and, when executed and authenticated
                  in accordance with the provisions of the Indenture and
                  delivered to and paid for by the purchasers thereof, will
                  constitute legal, valid and binding obligations of the
                  Company entitled to the benefits of the Indenture;

                           (v) to the best knowledge of such counsel, there is
                  no pending or threatened action, suit or proceeding before any
                  court or governmental agency, authority or body or any
                  arbitrator involving the Company or any of its subsidiaries,
                  of a character required to be disclosed in the Registration
                  Statement which is not adequately disclosed in the Prospectus,
                  and there is no franchise, contract or other document of a
                  character required to be described in the Registration
                  Statement or Prospectus, or to be filed as an exhibit, which
                  is not described or filed as required; and the statements
                  included or incorporated by reference in the Prospectus
                  describing any legal proceedings or material contracts or
                  agreements relating to the Company fairly summarize such
                  matters;

                           (vi) the Registration Statement has become effective
                  under the Act; any required filing of the Prospectus, and any
                  supplements thereto, pursuant to Rule 424(b) has been or will
                  be made in the manner and within the time period required by
                  Rule 424(b); to the best knowledge of such counsel, no stop
                  order suspending the effectiveness of the Registration
                  Statement has been issued and no proceedings for that purpose
                  have been instituted or threatened; and the Registration
                  Statement and the Prospectus (other than the financial
                  statements and other financial and statistical information
                  contained therein as to which such counsel need express no
                  opinion) comply as to form in all material respects with the
                  applicable requirements of the Act, the Exchange Act and the
                  Trust Indenture Act and the respective rules thereunder; and
                  such counsel has no reason to believe that the Registration
                  Statement at the Effective Date or at the Execution Time
                  contained any untrue statement



                                      -14-
<PAGE>   15
                  of a material fact or omitted to state any material fact
                  required to be stated therein or necessary to make the
                  statements therein not misleading or that the Prospectus
                  includes any untrue statement of a material fact or omits to
                  state a material fact necessary to make the statements
                  therein, in the light of the circumstances under which they
                  were made, not misleading;

                           (vii)  this Agreement has been duly authorized,
                  executed and delivered by the Company;

                           (viii) no consent, approval, authorization or order
                  of any court or governmental agency or body is required for
                  the consummation of the transactions contemplated herein
                  except such as have been obtained under the Act and such as
                  may be required under the blue sky laws of any jurisdiction in
                  connection with the sale of the Notes as contemplated by this
                  Agreement and such other approvals (specified in such opinion)
                  as have been obtained;

                           (ix) neither the execution and delivery of the
                  Indenture, the issue and sale of the Notes, nor the
                  consummation of any other of the transactions herein
                  contemplated nor the fulfillment of the terms hereof will
                  conflict with, result in a breach or violation of, or
                  constitute a default under any law or the charter or by-laws
                  of the Company or the terms of any indenture or other
                  agreement or instrument known to such counsel and to which the
                  Company or any of its subsidiaries is a party or bound or any
                  judgment, order, regulation or decree known to such counsel to
                  be applicable to the Company or any of its subsidiaries of any
                  court, regulatory body, administrative agency, governmental
                  body or arbitrator having jurisdiction over the Company or any
                  of its subsidiaries;

                           (x)  no holders of securities of the Company have
                  rights to the registration of such securities under the
                  Registration Statement; and

                           (xi) the information contained in the Prospectus
                  under the caption "United States Tax Considerations" in MTN
                  Supplement ____ is a fair and accurate summary of the
                  principal Federal income tax consequences associated with the
                  ownership of the Notes.


                                      -15-
<PAGE>   16
         In rendering such opinion, such counsel may rely (A) as to matters
         involving the application of laws of any jurisdiction other than the
         State of Ohio or the United States, to the extent deemed proper and
         specified in such opinion, upon the opinion of other counsel of good
         standing believed to be reliable and who are satisfactory to counsel
         for the Agent and (B) as to matters of fact, to the extent deemed
         proper, on certificates of responsible officers of the Company and
         public officials. References to the Prospectus in this paragraph (b)
         include any supplements thereto at the date such opinion is rendered.

                  (c) Each Agent shall have received from Simpson Thacher &
         Bartlett, counsel for the Agents, such opinion or opinions, dated the
         date hereof, with respect to the issuance and sale of the Notes, the
         Indenture, the Registration Statement, the Prospectus (together with
         any supplement thereto) and other related matters as the Agents may
         reasonably require, and the Company shall have furnished to such
         counsel such documents as they request for the purpose of enabling them
         to pass upon such matters.

                  (d) The Company shall have furnished to each Agent a
         certificate of the Company, signed by the Chief Financial Officer and
         the Treasurer or Controller of the Company, dated the Execution Time,
         to the effect that the signers of such certificate have carefully
         examined the Registration Statement, the Prospectus, any supplement to
         the Prospectus and this Agreement and that:

                           (i) the representations and warranties of the Company
                  in this Agreement are true and correct in all material
                  respects on and as of the date hereof with the same effect as
                  if made on the date hereof and the Company has complied with
                  all the agreements and satisfied all the conditions on its
                  part to be performed or satisfied as a condition to the
                  obligation of the Agents to solicit offers to purchase the
                  Notes;

                           (ii) no stop order suspending the effectiveness of
                  the Registration Statement has been issued and no proceedings
                  for that purpose have been instituted or, to the Company's
                  knowledge, threatened; and

                           (iii) since the date of the most recent financial
                  statements included in the Prospectus (exclusive of any
                  supplement thereto), there has been no material adverse change
                  in the condition (financial or


                                      -16-
<PAGE>   17
                  other), earnings, business or properties of the Company and
                  its subsidiaries, whether or not arising from transactions in
                  the ordinary course of business, except as set forth in or
                  contemplated in the Prospectus (exclusive of any supplement
                  thereto).

                  (e) At the Execution Time, PriceWaterhouseCoopers LLP shall
         have furnished to each Agent a letter or letters (which may refer to
         letters previously delivered to the Agents), dated as of the Execution
         Time, in form and substance satisfactory to the Agents, confirming that
         they are independent accountants within the meaning of the Act and the
         Exchange Act and the respective applicable published rules and
         regulations thereunder and stating in effect that:

                           (i) in their opinion the audited financial
                  statements, financial statement schedules and pro forma
                  financial statements, if any, included or incorporated in the
                  Registration Statement and the Prospectus and reported on by
                  them comply in form in all material respects with the
                  applicable accounting requirements of the Act and the
                  Exchange Act and the related published rules and regulations;
                  and

                           (ii) on the basis of a reading of the latest
                  unaudited financial statements made available by the Company
                  and its subsidiaries; carrying out certain specified
                  procedures (but not an audit in accordance with generally
                  accepted auditing standards) which would not necessarily
                  reveal matters of significance with respect to the comments
                  set forth in such letter; a reading of the minutes of the
                  meetings of the directors of the Company and the Bank and the
                  committee thereof; and inquiries of certain officials of the
                  Company who have responsibility for financial and accounting
                  matters of the Company and its subsidiaries as to transactions
                  and events subsequent to the date of the most recent audited
                  financial statements included or incorporated in the
                  Prospectus, nothing came to their attention which caused them
                  to believe that:

                                    (1) any material modifications should be
                           made to the unaudited financial statements included
                           or incorporated in the Registration Statement and the
                           Prospectus further to be in conformity with generally
                           accepted accounting principles;


                                      -17-
<PAGE>   18
                                    (2) any unaudited financial statements in-
                           cluded or incorporated in the Registration Statement
                           and the Prospectus do not comply in form in all
                           material respects with applicable accounting
                           requirements and with the published rules and
                           regulations of the Commission with respect to
                           financial statements included or in corporated in
                           quarterly reports on Form 10-Q under the Exchange
                           Act;

                                    (3) with respect to the period subsequent to
                           the date of the most recent financial statements
                           (other than any capsule information), audited or
                           unaudited, included or incorporated in the
                           Registration Statement and the Prospectus, there were
                           any changes, at a specified date not more than five
                           business days prior to the date of the letter, in the
                           long-term debt of the Company and its subsidiaries or
                           capital stock of the Company [or decreases in the
                           stockholders' equity of the Company or decreases in
                           capital of the Company and its subsidiaries] as
                           compared with the amounts shown on the most recent
                           consolidated balance sheet included or incorporated
                           in the Registration Statement and the Prospectus, or
                           for the period from the date of the most recent
                           financial statements included or incorporated in the
                           Registration Statement and the Prospectus to such
                           specified date there were any decreases, as compared
                           with the corresponding period in the preceding year
                           in total or per share amounts of net income or net
                           interest income (net interest income after provision
                           for loan losses) of the Company and its subsidi-
                           aries, except in all instances for changes or
                           decreases set forth in such letter, in which case the
                           letter shall be accompanied by an explanation by the
                           Company as to the significance thereof unless said
                           explanation is not deemed necessary by the Agents; or

                                    (4) the amounts included in any unaudited
                           "capsule" information included or incorporated in the
                           Registration Statement and the Prospectus do not
                           agree with the amounts set forth in the unaudited
                           financial statements for the same periods or were
                           not determined on a basis substantially consistent
                           with that of the corresponding


                                      -18-
<PAGE>   19
                           amounts in the audited financial statements included
                           or incorporated in the Registration Statement and the
                           Prospectus;

                                    (5) they have performed certain other
                           specified procedures as a result of which they
                           determined that certain information of an ac-
                           counting, financial or statistical nature (which is
                           limited to accounting, financial or statistical
                           information derived from the general accounting
                           records of the Company and its subsidiaries) set
                           forth in the Registration Statement and the
                           Prospectus and in Exhibit 12 to the Registration
                           Statement, including the information included or
                           incorporated in Items [1, 2, 6, 7 and 11] of the
                           Company's Annual Report on Form 10-K, incorporated in
                           the Registration Statement and the Prospectus, and
                           the information included in the "Management's
                           Discussion and Analysis of Financial Condition and
                           Results of Operations" included or incorporated in
                           the Company's Quarterly Reports on Form 10-Q,
                           incorporated in the Registration Statement and the
                           Prospectus, agrees with the accounting records of the
                           Company and its subsidiaries, excluding any
                           questions of legal interpretation; and

                                    (6) if unaudited pro forma financial
                           statements are included or incorporated in the
                           Registration Statement and the Prospectus, on the
                           basis of a reading of the unaudited pro forma
                           financial statements, carrying out certain specified
                           procedures, inquiries of certain officials of the
                           Company and the acquired company who have
                           responsibility for financial and accounting matters,
                           and proving the arithmetic accuracy of the
                           application of the pro forma adjustments to the
                           historical amounts in the pro forma financial
                           statements, nothing came to their attention which
                           caused them to believe that the pro forma financial
                           statements do not comply in form in all material
                           respects with the applicable accounting requirements
                           of Rule 11-02 of Regulation S-X or that the pro forma
                           adjustments have not been properly applied to the
                           historical amounts in the compilation of such
                           statements.

                  References to the Prospectus in this paragraph (e) include any
         supplement thereto at the date of the letter.


                                      -19-
<PAGE>   20
                  (f) Prior to the Execution Time, the Company shall have
         furnished to each Agent such further information, documents,
         certificates and opinions of counsel as the Agents may reasonably
         request.

                  If any of the conditions specified in this Section 5 shall not
have been fulfilled in all material respects when and as provided in this
Agreement, or if any of the opinions and certificates mentioned above or
elsewhere in this Agreement shall not be in all material respects reasonably
satisfactory in form and substance to such Agents and counsel for the Agents,
this Agreement and all obligations of any Agent hereunder may be canceled at any
time by the Agents. Notice of such cancelation shall be given to the Company in
writing or by telephone or telegraph confirmed in writing.

                  The documents required to be delivered by this Section 5 shall
be delivered at the office of Simpson Thacher & Bartlett, 425 Lexington Avenue,
New York, NY 10017, on the date hereof.

                  6. Conditions to the Obligations of a Purchaser.  The
obligations of a Purchaser to purchase any Notes will be subject to the accuracy
of the representations and warranties on the part of the Company herein as of
the date of the related Terms Agreement and as of the Closing Date for such
Notes, to the performance and observance by the Company of all covenants and
agreements herein contained on its part to be performed and observed and to the
following additional conditions precedent:

                  (a) No stop order suspending the effectiveness of the
         Registration Statement shall have been issued and no proceedings for
         that purpose shall have been instituted or threatened.

                  (b) To the extent agreed to between the Company and the
         Purchaser in a Terms Agreement, the Purchaser shall have received,
         appropriately updated, (i) a certificate of the Company, dated as of
         the Closing Date, to the effect set forth in Section 5(d) (except that
         references to the Prospectus shall be to the Prospectus as supplemented
         as of the date of such Terms Agreement), (ii) the opinion of counsel
         for the Company, dated as of the Closing Date, to the effect set forth
         in Section 5(b), (iii) the opinion of Simpson Thacher & Bartlett,
         counsel for the Purchaser, dated as of the Closing Date, to the effect
         set forth in Section 5(c), and (iv) the letter of
         PriceWaterhouseCoopers LLP, independent accountants for the Company,
         dated as of the Closing Date, to the effect set forth in Section 5(e).


                                      -20-
<PAGE>   21
                  (c) Prior to the Closing Date, the Company shall have
         furnished to the Purchaser such further information, certificates and
         documents as the Purchaser may reasonably request.

                  If any of the conditions specified in this Section 6 shall not
have been fulfilled in all material respects when and as provided in this
Agreement and the applicable Terms Agreement, or if any of the opinions and
certificates mentioned above or elsewhere in this Agreement or such Terms
Agreement and required to be delivered to the Purchaser pursuant to the terms
hereof and thereof shall not be in all material respects reasonably
satisfactory in form and substance to the Purchaser and its counsel, such Terms
Agreement and all obligations of the Purchaser thereunder and with respect to
the Notes subject thereto may be canceled at, or at any time prior to, the
respective Closing Date by the Purchaser. Notice of such cancelation shall be
given to the Company in writing or by telephone or telegraph confirmed in
writing.

                  7. Right of Person Who Agreed to Purchase to Refuse to
Purchase. (a) The Company agrees that any person who has agreed to purchase and
pay for any Note pursuant to a solicitation by any of the Agents shall have the
right to refuse to purchase such Note if, at the Closing Date therefor, any
condition set forth in Section 5 or 6, as applicable, shall not be satisfied.

                  (b) The Company agrees that any person who has agreed to
purchase and pay for any Note pursuant to a solicitation by any of the Agents
shall have the right to refuse to purchase such Note if, subsequent to the
agreement to purchase such Note, any change, condition or development specified
in any of Sections 9(b)(i) through (v) shall have occurred (with the judgment of
the Agent which presented the offer to purchase such Note being substituted for
any judgment of a Purchaser required therein) the effect of which is, in the
judgment of the Agent which presented the offer to purchase such Note, so
material and adverse as to make it impractical or inadvisable to proceed with
the sale and delivery of such Note (it being understood that under no
circumstance shall any such Agent have any duty or obligation to the Company or
to any such person to exercise the judgment permitted to be exercised under this
Section 7(b) and Section 9(b)).

                  8. Indemnification and Contribution. (a) The Company agrees
to indemnify and hold harmless each of you, the directors, officers, employees
and agents of each of you and each person who controls each of you within the
meaning of either the Act or the Exchange Act against any and all losses,


                                      -21-
<PAGE>   22
claims, damages or liabilities, joint or several, to which you, they or any of
you or them may become subject under the Act, the Exchange Act or other Federal
or state statutory law or regulation, at common law or otherwise, insofar as
such losses, claims, damages or liabilities (or actions in respect thereof)
arise out of or are based upon any untrue statement or alleged untrue statement
of a material fact contained in the registration statement for the registration
of the Securities as originally filed or in any amendment thereof, or in the
Prospectus or any preliminary Prospectus, or in any amendment thereof or
supplement thereto, or arise out of or are based upon the omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, and agrees to reimburse
each such indemnified party, as incurred, for any legal or other expenses
reasonably incurred by them in connection with investigating or defending any
such loss, claim, damage, liability or action; provided, however, that the
Company will not be liable in any such case to the extent that any such loss,
claim, damage or liability arises out of or is based upon any such untrue
statement or alleged untrue statement or omission or alleged omission made
therein in reliance upon and in conformity with written information relating to
any of you furnished to the Company by any of you specifically for inclusion
therein. This indemnity agreement will be in addition to any liability which
the Company may otherwise have.

                  (b) Each of you agrees to indemnify and hold harmless the
Company, each of its directors, each of its officers who signs the Registration
Statement and each person who controls the Company within the meaning of either
the Act or the Exchange Act, to the same extent as the foregoing indemnity from
the Company to you, but only with reference to written information relating to
such of you furnished to the Company by such of you specifically for inclusion
in the documents referred to in the foregoing indemnity. This indemnity
agreement will be in addition to any liability which you may otherwise have. The
Company acknowledges that the statements set forth in the last paragraph of the
cover page, and under the heading "Plan of Distribution", of the Prospectus
Supplement constitute the only information furnished in writing by any of you
for inclusion in the documents referred to in the foregoing indemnity, and you
confirm that such statements are correct.

                  (c) Promptly after receipt by an indemnified party under this
Section 8 of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under this


                                      -22-
<PAGE>   23
Section 8, notify the indemnifying party in writing of the commencement
thereof; but the failure so to notify the indemnifying party (i) will not
relieve it from liability under paragraph (a) or (b) above unless and to the
extent it did not otherwise learn of such action and such failure results in the
forfeiture by the indemnifying party of substantial rights and defenses and (ii)
will not, in any event, relieve the indemnifying party from any obligations to
any indemnified party other than the indemnification obligation provided in
paragraph (a) or (b) above. The indemnifying party shall be entitled to appoint
counsel of the indemnifying party's choice at the indemnifying party's expense
to represent the indemnified party in any action for which indemnification is
sought (in which case the indemnifying party shall not thereafter be
responsible for the fees and expenses of any separate counsel retained by the
indemnified party or parties except as set forth below); provided, however, that
such counsel shall be satisfactory to the indemnified party. Notwithstanding the
indemnifying party's election to appoint counsel to represent the indemnified
party in an action, the indemnified party shall have the right to employ
separate counsel (including local counsel), and the indemnifying party shall
bear the reasonable fees, costs and expenses of such separate counsel if (i) the
use of counsel chosen by the indemnifying party to represent the indemnified
party would present such counsel with a conflict of interest, (ii) the actual or
potential defendants in, or targets of, any such action include both the
indemnified party and the indemnifying party and the indemnified party shall
have reasonably concluded that there may be legal defenses available to it
and/or other indemnified parties which are different from or additional to those
available to the indemnifying party, (iii) the indemnifying party shall not
have employed counsel satisfactory to the indemnified party to represent the
indemnified party within a reasonable time after notice of the institution of
such action or (iv) the indemnifying party shall authorize the indemnified party
to employ separate counsel at the expense of the indemnifying party. An
indemnifying party will not, without the prior written consent of the
indemnified parties, settle or compromise or consent to the entry of any
judgment with respect to any pending or threatened claim, action, suit or
proceeding in respect of which indemnification or contribution may be sought
hereunder (whether or not the indemnified parties are actual or potential
parties to such claim or action) unless such settlement, compromise or consent
includes an unconditional release of each indemnified party from all liability
arising out of such claim, action, suit or proceeding.

                  (d) In the event that the indemnity provided in paragraph (a)
or (b) of this Section 8 is unavailable to or


                                      -23-
<PAGE>   24
insufficient to hold harmless an indemnified party for any reason, the Company
and each of you agree to contribute to the aggregate losses, claims, damages and
liabilities (including legal or other expenses reasonably incurred in connection
with investigating or defending same) (collectively "Losses") to which the
Company and one or more of you may be subject in such proportion as is
appropriate to reflect the relative benefits received by the Company and by each
of you from the offering of the Notes from which such Losses arise; provided,
however, that in no case shall any of you be responsible for any amount in
excess of the commissions received by such of you in connection with the sale of
Notes from which such Losses arise (or, in the case of Notes sold pursuant to a
Terms Agreement, the aggregate commissions that would have been received by such
of you if such commissions had been payable). If the allocation provided by the
immediately preceding sentence is unavailable for any reason, the Company and
each of you shall contribute in such proportion as is appropriate to reflect not
only such relative benefits but also the relative fault of the Company and of
each of you in connection with the statements or omissions which resulted in
such Losses as well as any other relevant equitable considerations. Benefits
received by the Company shall be deemed to be equal to the total net proceeds
from the offering (before deducting expenses) of the Notes from which such
Losses arise, and benefits received by each of you shall be deemed to be equal
to the total commissions received by such of you in connection with the sale of
Notes from which such Losses arise (or, in the case of Notes sold pursuant to a
Terms Agreement, the aggregate commissions that would have been received by such
of you if such commissions had been payable). Relative fault shall be determined
by reference to whether any alleged untrue statement or omission relates to
information provided by the Company or any of you. The Company and each of you
agree that it would not be just and equitable if contribution were determined
by pro rata allocation or any other method of allocation which does not take
account of the equitable considerations referred to above. Notwithstanding the
provisions of this paragraph (d), no person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Act) shall be
entitled to contribution from any person who was not guilty of such fraudulent
misrepresentation. For purposes of this Section 8, each person who controls any
of you within the meaning of the Act or the Exchange Act and each director,
officer, employee and agent of any of you shall have the same rights to
contribution as you and each person who controls the Company within the meaning
of either the Act or the Exchange Act, each officer of the Company who shall
have signed the Registration Statement and each director of the Company shall
have the same rights to contribution as the Company, subject in each case to the
applicable terms and conditions of this paragraph (d).


                                      -24-
<PAGE>   25
                  9. Termination.  (a) This Agreement will continue in effect
until terminated as provided in this Section 9. This Agreement may be terminated
either by the Company as to any Agent or by any of you insofar as this Agreement
relates to any Agent, by giving written notice of such termination to such Agent
or the Company, as the case may be. This Agreement shall so terminate at the
close of business on the first business day following the receipt of such notice
by the party to whom such notice is given. In the event of such termination, no
party shall have any liability to the other party hereto, except as provided in
the fourth paragraph of Section 2(a), Section 4(h), Section 8 and Section 10.

                  (b) Each Terms Agreement shall be subject to termination in
the absolute discretion of the Purchaser, by notice given to the Company prior
to delivery of any payment for any Note to be purchased thereunder, if prior to
such time (i) there shall have occurred, subsequent to the agreement to purchase
such Note, any change, or any development involving a prospective change, in or
affecting the business or properties of the Company and its subsidiaries the
effect of which is, in the judgment of the Purchaser, so material and adverse as
to make it impractical or inadvisable to proceed with the offering or delivery
of such Note, (ii) there shall have been, subsequent to the agreement to
purchase such Note, any decrease in the rating of any of the Company's debt
securities by any "nationally recognized statistical rating organization" (as
defined for purposes of Rule 436(g) under the Act) or any notice given of any
intended or potential decrease in any such rating or of a possible change in any
such rating that does not indicate the direction of the possible change, (iii)
trading in the Company's Common Stock shall have been suspended by the
Commission or the New York Stock Exchange or trading in securities generally on
the New York Stock Exchange shall have been suspended or limited or minimum
prices shall have been established on such Exchange, (iv) a banking moratorium
shall have been declared by either Federal or New York State or Wisconsin State
authorities, or (v) there shall have occurred any outbreak or escalation of
hostilities, declaration by the United States of a national emergency or war or
other calamity or crisis the effect of which on financial markets is such as to
make it, in the judgment of the Purchaser, impracticable or inadvisable to
proceed with the offering or delivery of such Notes as contemplated by the
Prospectus (exclusive of any supplement thereto).

                  10. Survival of Certain Provisions.  The respective
agreements, representations, warranties, indemnities and other statements of the
Company or its officers and of you set forth in or made pursuant to this
Agreement will remain in full force


                                      -25-
<PAGE>   26
and effect, regardless of any investigation made by or on behalf of you or the
Company or any of the directors, officers, employees, agents or controlling
persons referred to in Section 8 hereof, and will survive delivery of and
payment for the Notes. The provisions of Sections 4(h) and 8 hereof shall sur-
vive the termination or cancelation of this Agreement. The provisions of this
Agreement (including without limitation Section 7 hereof) applicable to any
purchase of a Note for which an agreement to purchase exists prior to the
termination hereof shall survive any termination of this Agreement. If at the
time of termination of this Agreement any Purchaser shall own any Notes with the
intention of selling them, the provisions of Section 4 shall remain in effect
until such Notes are sold by the Purchaser.

                  11.  Notices. All communications hereunder will be in writing
and effective only on receipt, and, if sent to any of you, will be mailed,
delivered or telegraphed and confirmed to such of you, at the address specified
in Schedule I hereto; or, if sent to the Company, will be mailed, delivered or
telegraphed and confirmed to it at 777 East Wisconsin Avenue, Milwaukee,
Wisconsin 53202, (414) 765-4321, to the attention of Jennie P. Carlson, Senior
Vice President, General Counsel and Secretary.

                  12.  Successors. This Agreement will inure to the benefit of
and be binding upon the parties hereto, their respective successors, the
directors, officers, employees, agents and controlling persons referred to in
Section 8 hereof and, to the extent provided in Section 7, any person who has
agreed to purchase Notes, and no other person will have any right or obligation
hereunder. No purchaser of Notes shall be deemed to be a successor by reason
merely of such purchase.

                  13.  Applicable Law.  This Agreement will be governed
by and construed in accordance with the laws of the State of New
York.


                                      -26-
<PAGE>   27
                  If the foregoing is in accordance with your understanding of
our agreement, please sign and return to us the enclosed duplicate hereof,
whereupon this letter and your acceptance shall represent a binding agreement
among the Company and you.


                                            Very truly yours,

                                            Firstar Corporation



                                            By: ______________________________
                                                  [Title]


The foregoing Agreement is
hereby confirmed and accepted
as of the date hereof.


[AGENTS]


                                      -27-

<PAGE>   1
                                                                    EXHIBIT 4.1




                               FIRSTAR CORPORATION

                                       TO


                                     TRUSTEE


                                    INDENTURE

                           DATED AS OF _________, 1999


                             SENIOR DEBT SECURITIES
<PAGE>   2
                               FIRSTAR CORPORATION

         RECONCILIATION AND TIE BETWEEN TRUST INDENTURE ACT OF 1939 AND
                   INDENTURE, DATED AS OF ____________________



TRUST INDENTURE ACT SECTION                                    INDENTURE SECTION

     Section 310 (a)(1) ....................................          6.9
                 (a)(2) ....................................          6.9
                 (a)(3) ....................................     Not Applicable
                 (a)(4) ....................................     Not Applicable
                 (a)(5) ....................................          6.9
                 (b) .......................................       6.8, 6.10
                 (c) .......................................     Not Applicable
     Section 311 (a) .......................................          6.13
                 (b) .......................................          6.13
     Section 312 (a) .......................................       7.1, 7.2(a)
                 (b) .......................................            7.2(b)
                 (c) .......................................            7.2(c)
     Section 313 (a) .......................................            7.3(a)
                 (b) .......................................            7.3(a)
                 (c) .......................................            7.3(a)
                 (d) .......................................            7.3(b)
     Section 314 (a) .......................................       7.4, 10.7
                 (b) .......................................      Not Applicable
                 (c)(1) ....................................            1.2
                 (c)(2) ....................................            1.2
                 (c)(3) ....................................      Not Applicable
                 (d) .......................................      Not Applicable
                 (e) .......................................            1.2
     Section 315 (a) .......................................            6.1
                 (b) .......................................            6.2
                 (c) .......................................            6.1
                 (d) .......................................            6.1
                 (e) .......................................           5.14
     Section 316 (a) .......................................            1.1
                 (a)(1)(A) .................................       1.4 (h), 5.2
                 ...........................................           5.12
                 (a)(1)(B) .................................       1.4 (h), 5.13
                 (A)(2) ....................................      Not Applicable
                 (b) .......................................            5.8
                 (c) .......................................            1.4 (h)
     Section 317 (a)(1) ....................................            5.3
                 (a)(2) ....................................            5.4
                 (b) .......................................           10.3
     Section 318 (a) .......................................            1.7
                 (c) .......................................            1.7


- ----------
Note: This reconciliation and tie shall not, for any purpose, be deemed to be
      part of the Indenture.
<PAGE>   3
                                TABLE OF CONTENTS

                                                                            PAGE


                                   ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

Section 1.1.   Definitions ................................................    1
               Act ........................................................    2
               Affiliate ..................................................    2
               Authorized Newspaper .......................................    2
               Bearer Security ............................................    2
               Board of Directors .........................................    2
               Board Resolution ...........................................    2
               Business Day ...............................................    2
               Capital Stock ..............................................    3
               CEDEL or CEDEL S.A. ........................................    3
               Commission .................................................    3
               Company ....................................................    3
               Company Request and Company Order ..........................    3
               Corporate Trust Office .....................................    3
               corporation ................................................    3
               coupon .....................................................    3
               Debt Securities ............................................    3
               Default ....................................................    3
               Defaulted Interest .........................................    3
               Depositary .................................................    4
               Designated Currency ........................................    4
               Dollar or $ ................................................    4
               Eligible Instruments .......................................    4
               Euroclear ..................................................    4
               Euro .......................................................    4
               Event of Default ...........................................    4
               Exchange Rate ..............................................    4
               Exchange Rate Agent ........................................    4
               Exchange Rate Officer's Certificate ........................    4
               Foreign Currency ...........................................    4
               Global Exchange Agent ......................................    4
               Global Exchange Date .......................................    4
               Global Security ............................................    5
               Holder .....................................................    5
               Indenture ..................................................    5


                                       -i-
<PAGE>   4
                                                                            PAGE

               interest ...................................................    5
               Interest Payment Date ......................................    5
               Maturity ...................................................    5
               Officers' Certificate ......................................    5
               Opinion of Counsel .........................................    5
               Original Issue Discount Security ...........................    5
               Outstanding ................................................    5
               Paying Agent ...............................................    6
               Person .....................................................    6
               Place of Payment ...........................................    6
               Predecessor Security .......................................    7
               Principal Subsidiary Bank ..................................    7
               Redemption Date ............................................    7
               Redemption Price ...........................................    7
               Registered Security ........................................    7
               Regular Record Date ........................................    7
               Remarketing Entity .........................................    7
               Repayment Date .............................................    7
               Repayment Price ............................................    7
               Responsible Officer ........................................    7
               Security Register and Security Registrar ...................    7
               Special Record Date ........................................    7
               Stated Maturity ............................................    8
               Subsidiary .................................................    8
               Subsidiary Bank ............................................    8
               Trust Indenture Act ........................................    8
               Trustee ....................................................    8
               United States ..............................................    8
               United States Alien ........................................    8
               U.S. Government Obligations ................................    8
               Voting Stock ...............................................    8
Section 1.2.   Compliance Certificates and Opinions .......................    9
Section 1.3.   Form of Documents Delivered to Trustee .....................    9
Section 1.4.   Acts of Holders ............................................   10
Section 1.5.   Notices, etc., to Trustee and Company ......................   12
Section 1.6.   Notice to Holders; Waiver ..................................   12
Section 1.7.   Conflict with Trust Indenture Act ..........................   13
Section 1.8.   Effect of Headings and Table of Contents ...................   13
Section 1.9.   Successors and Assigns .....................................   13
Section 1.10.  Separability Clause ........................................   13
Section 1.11.  Benefits of Indenture ......................................   13
Section 1.12.  Governing Law ..............................................   14
Section 1.13.  Legal Holidays .............................................   14
Section 1.14.  Counterparts ...............................................   14


                                      -ii-
<PAGE>   5
                                                                            PAGE

                                   ARTICLE TWO

                               DEBT SECURITY FORMS

Section 2.1.   Forms Generally ............................................   14
Section 2.2.   Form of Trustee's Certificate of Authentication ............   15
Section 2.3.   Debt Securities in Global Form .............................   15

                          ARTICLE THREE

                       THE DEBT SECURITIES

Section 3.1.   Amount Unlimited; Issuance in Series .......................   16
Section 3.2.   Denominations ..............................................   19
Section 3.3.   Execution, Authentication, Delivery and Dating .............   19
Section 3.4.   Temporary Debt Securities ..................................   22
Section 3.5.   Registration; Registration of Transfer and Exchange ........   24
Section 3.6.   Mutilated, Destroyed, Lost and Stolen Debt Securities ......   28
Section 3.7.   Payment of Interest; Interest Rights Preserved .............   29
Section 3.8.   Persons Deemed Owners ......................................   31
Section 3.9.   Cancellation ...............................................   32
Section 3.10.  Computation of Interest ....................................   32
Section 3.11.  Certification by a Person Entitled to Delivery of a Bearer
               Security ...................................................   32
Section 3.12.  Judgments ..................................................   32

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

Section 4.1.   Satisfaction and Discharge of Indenture ....................   33
Section 4.2.   Application of Trust Money and Eligible Instruments ........   34
Section 4.3.   Satisfaction, Discharge and Defeasance of Debt Securities
               of any Series ..............................................   35

                                  ARTICLE FIVE

                                    REMEDIES

Section 5.1.   Events of Default ..........................................   37
Section 5.2.   Acceleration of Maturity; Rescission and Annulment .........   38
Section 5.3.   Collection of Indebtedness and Suits for Enforcement by
               Trustee ....................................................   39
Section 5.4.   Trustee May File Proofs of Claim ...........................   40
Section 5.5.   Trustee May Enforce Claims without Possession of Debt
               Securities or Coupons ......................................   41
Section 5.6.   Application of Money Collected .............................   41
Section 5.7.   Limitation on Suits ........................................   42


                                      -iii-
<PAGE>   6
                                                                            PAGE

Section 5.8.   Unconditional Right of Holders to Receive Principal,
               Premium and Interest .......................................   42
Section 5.9.   Restoration of Rights and Remedies .........................   43
Section 5.10.  Rights and Remedies Cumulative .............................   43
Section 5.11.  Delay or Omission Not Waiver ...............................   43
Section 5.12.  Control by Holders of Debt Securities ......................   43
Section 5.13.  Waiver of Past Defaults ....................................   44
Section 5.14.  Undertaking for Costs ......................................   44
Section 5.15.  Waiver of Stay or Extension Laws ...........................   44

                                   ARTICLE SIX

                                   THE TRUSTEE

Section 6.1.   Certain Duties and Responsibilities ........................   45
Section 6.2.   Notice of Default ..........................................   45
Section 6.3.   Certain Rights of Trustee ..................................   45
Section 6.4.   Not Responsible for Recitals or Issuance of Debt Securities    46
Section 6.5.   May Hold Debt Securities or Coupons ........................   47
Section 6.6.   Money Held in Trust ........................................   47
Section 6.7.   Compensation and Reimbursement .............................   47
Section 6.8.   Disqualification; Conflicting Interests ....................   48
Section 6.9.   Corporate Trustee Required; Eligibility ....................   48
Section 6.10.  Resignation and Removal; Appointment of Successor ..........   48
Section 6.11.  Acceptance of Appointment by Successor .....................   50
Section 6.12.  Merger, Conversion, Consolidation or Succession to Business    51
Section 6.13.  Preferential Collection of Claims Against Company ..........   51
Section 6.14.  Authenticating Agent .......................................   51

                                  ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

Section 7.1.   Company to Furnish Trustee Names and Addresses of Holders ..   54
Section 7.2.   Preservation of Information; Communications to Holders .....   54
Section 7.3.   Reports by Trustee .........................................   54
Section 7.4.   Reports by Company .........................................   55

                                  ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

Section 8.1.   Company May Consolidate, etc. Only on Certain Terms ........   55
Section 8.2.   Successor Corporation Substituted ..........................   56


                                      -iv-
<PAGE>   7
                                                                            PAGE
                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

Section 9.1.   Supplemental Indentures without Consent of Holders .........   56
Section 9.2.   Supplemental Indentures with Consent of Holders ............   57
Section 9.3.   Execution of Supplemental Indentures .......................   59
Section 9.4.   Effect of Supplemental Indentures ..........................   59
Section 9.5.   Conformity with Trust Indenture Act ........................   59
Section 9.6.   Reference in Debt Securities to Supplemental Indentures ....   59

                                   ARTICLE TEN

                                    COVENANTS

Section 10.1.  Payment of Principal, Premium and Interest .................   59
Section 10.2.  Maintenance of Office or Agency ............................   60
Section 10.3.  Money for Debt Securities Payments to Be Held in Trust .....   61
Section 10.4.  Purchase of Debt Securities by Company or Subsidiary .......   62
Section 10.5.  Existence ..................................................   62
Section 10.6.  Restrictions Upon Sale or Issuance of Capital Stock of
               Certain Subsidiary Banks ...................................   63
Section 10.7.  Payment of Additional Amounts ..............................   64
Section 10.8.  Officers' Certificate as to Default ........................   64
Section 10.9.  Waiver of Certain Covenants ................................   65

                                 ARTICLE ELEVEN

                          REDEMPTION OF DEBT SECURITIES

Section 11.1.  Applicability of Article ...................................   65
Section 11.2.  Election to Redeem; Notice to Trustee ......................   65
Section 11.3.  Selection by Trustee of Debt Securities to be Redeemed .....   65
Section 11.4.  Notice of Redemption .......................................   66
Section 11.5.  Deposit of Redemption Price ................................   67
Section 11.6.  Debt Securities Payable on Redemption Date .................   67
Section 11.7.  Debt Securities Redeemed in Part ...........................   68

                                 ARTICLE TWELVE

                                  SINKING FUNDS

Section 12.1.  Applicability of Article ...................................   68
Section 12.2.  Satisfaction of Sinking Fund Payments with Debt Securities .   68
Section 12.3.  Redemption of Debt Securities for Sinking Fund .............   69


                                       -v-
<PAGE>   8
                                                                            PAGE
                                ARTICLE THIRTEEN

                       REPAYMENT AT THE OPTION OF HOLDERS

Section 13.1.  Applicability of Article ...................................   69
Section 13.2.  Repayment of Debt Securities ...............................   70
Section 13.3.  Exercise of Option; Notice .................................   70
Section 13.4.  Election of Repayment by Remarketing Entities ..............   71
Section 13.5.  Securities Payable on the Repayment Date ...................   71

                                ARTICLE FOURTEEN

                     MEETINGS OF HOLDERS OF DEBT SECURITIES

Section 14.1.  Purposes for Which Meetings May Be Called ..................   72
Section 14.2.  Call, Notice and Place of Meetings .........................   72
Section 14.3.  Persons Entitled to Vote at Meetings .......................   72
Section 14.4.  Quorum; Action .............................................   73
Section 14.5.  Determination of Voting Rights; Conduct and Adjournment of
               Meetings ...................................................   74
Section 14.6.  Counting Votes and Recording Action of Meetings ............   74

                                 ARTICLE FIFTEEN

                                   DEFEASANCE

Section 15.1.  Termination of Company's Obligations .......................   75
Section 15.2.  Repayment to Company .......................................   76
Section 15.3.  Indemnity for Eligible Instruments .........................   76
Testimonium ...............................................................   77
Signatures and Seals ......................................................   78
Acknowledgments ...........................................................   79
Exhibit A-1 ...............................................................   80
Exhibit A-2 ...............................................................   82
Exhibit B .................................................................   83


                                      -vi-
<PAGE>   9
          INDENTURE (the "Indenture") dated as of _______, 1999, between FIRSTAR
CORPORATION, a Wisconsin corporation (hereinafter called the "Company"), having
its principal place of business at 777 East Wisconsin Avenue, Milwaukee,
Wisconsin 53202 and _____________, a ________ banking association (hereinafter
called the "Trustee"), having its Corporate Trust Office at _____________.

                             RECITALS OF THE COMPANY

          The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its debentures,
notes, bonds and other evidences of indebtedness (herein called the "Debt
Securities").

          All things necessary have been done to make this In denture a valid
agreement of the Company, in accordance with its terms.

          NOW, THEREFORE, THIS INDENTURE WITNESSETH:

          For and in consideration of the premises and the purchase of the Debt
Securities of any series created and issued on or after the date hereof by the
Holders thereof, it is mutually covenanted and agreed for the equal and
proportionate benefit of all Holders of such Debt Securities or of any such
series, as follows:

                                   ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION


          SECTION 1.1. Definitions.

          For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

          (1) the terms defined in this Article have the meanings assigned to
     them in this Article, and include the plural as well as the singular;

          (2) all other terms used herein which are defined in the Trust
     Indenture Act or by Commission rule or regulation under the Trust Indenture
     Act, either directly or by reference therein, as in force at the date as of
     which this instrument was exercised, except as provided in Section 9.5,
     have the meanings assigned to them therein;

          (3) all accounting terms not otherwise defined herein have the
     meanings assigned to them in accordance with generally accepted accounting
     principles, and, except as otherwise herein expressly provided, the term
     "generally accepted accounting principles" with respect to any computation
     required or permitted hereunder shall mean such accounting principles as
     are generally accepted in the United States at the date of such
     computation; and
<PAGE>   10
          (4) the words "herein", "hereof" and "hereunder" and other words of
     similar impact refer to this Indenture as a whole and not to any particular
     Article, Section or other subdivision.

          Certain terms, used principally in Article Six, are defined in that
Article.

          "Act" when used with respect to any Holder has the meaning specified
in Section 1.4.

          "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities by contract or otherwise, and
the terms "controlling" and "con trolled" have meanings correlative to the
foregoing.

          "Authorized Newspaper" means a newspaper in an official language of
the country of publication or in the English language customarily published on
each Business Day, whether or not published on Saturdays, Sundays or holidays,
and of general circulation in the place in connection with which the term is
used or in the financial community of such place. Where successive publications
are required to be made in Authorized Newspapers, the successive publications
may be made in the same or in different newspapers in the same city meeting the
foregoing requirements and in each case on any Business Day.

          "Bearer Security" means any Debt Security established pursuant to
Section 2.1 which is payable to bearer including, without limitation, unless the
context otherwise indicates, a Debt Security in global bearer form.

          "Board of Directors" means either the board of directors of the
Company, or the executive or any other committee of that board duly authorized
to act in respect hereof.

          "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee. Where any provision of this
Indenture refers to action to be taken pursuant to a Board Resolution (including
the establishment of any series of the Debt Securities and the forms and terms
thereof), such action may be taken by any committee of the Board or the Company
or any officer or employee of the Company authorized to take such action by a
Board Resolution.

          "Business Day" with respect to any Debt Security means any day, other
than a Saturday or Sunday, that is not a legal holiday or a day on which banking
institutions are authorized or obligated by law or executive order to be closed
in (a) the City of New York or (b) if the Designated Currency for a Debt
Security is a Foreign Currency, the financial center of the country issuing such
Designated Currency (which, in the case of Euros, shall be Brussels, Belgium).
If the interest rate of the Debt Security is based on LIBOR, "Business Day"
means any day on


                                       -2-
<PAGE>   11
which dealings in deposits in the Designated Currency of such Debt Security are
transacted in the London interbank market.

          "Capital Stock" means, as to shares of a corporation, outstanding
shares of stock of any class, whether now or here after authorized, irrespective
of whether such class shall be limited to a fixed sum or percentage in respect
of the rights of the holders thereof to participate in dividends and in the
distribution of assets upon the voluntary liquidation, dissolution or winding
up of such corporation.

          "CEDEL" or "CEDEL S.A." means Centrale de Livraison de Valeurs
Mobilieres S.A.

          "Commission" means the Securities and Exchange Com mission, as from
time to time constituted, created under the Securities Exchange Act of 1934, or
if at any time after the execution of this instrument such Commission is not
existing and performing the duties now assigned to it under the Trust Indenture
Act, then the body performing such duties on such date.

          "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

          "Company Request" and "Company Order" mean, respectively, except as
otherwise provided in this Indenture, a written request or order signed in the
name of the Company by the Chairman of the Board, a Vice Chairman of the Board,
the President or a Vice President (any references to a Vice President of the
Company herein shall be deemed to include any Vice President of the Company
whether or not designated by a number or word or words added before or after the
title "Vice President"), the Treasurer, an Assistant Treasurer, the Controller,
an Assistant Controller, Secretary or an Assistant Secretary of the Company or
by another officer of the Company duly authorized to sign by a Board Resolution,
and delivered to the Trustee.

          "Corporate Trust Office" means the principal corporate trust office of
the Trustee at which at any particular time its corporate trust business shall
be administered.

          The term "corporation" includes corporations, associations, companies
and business trusts.

          The term "coupon" means any interest coupon appertaining to a Bearer
Security.

          "Debt Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Debt Securities authenticated and
delivered under this Indenture.

          "Default" means any Event of Default and any default of the type set
forth in clauses (1) through (5) of Section 5.3.

          "Defaulted Interest" has the meaning specified in Section 3.7.


                                       -3-
<PAGE>   12
          "Depositary" means, with respect to the Debt Securities of any series
issuable or issued in the form of a Global Security, the Person (which person
shall be a clearing agency registered under the Securities Exchange Act of 1934,
as amended) designated as Depositary by the Company pursuant to Section 3.1
until a successor Depositary shall have become such pursuant to the applicable
provisions of this Indenture, and thereafter "Depositary" shall mean or include
each person who is then a Depositary hereunder, and if at any time there is more
than one such Person, "Depositary" as used with respect to the Debt Securities
of any such series shall mean the Depositary with respect to the Debt Securities
of that series.

          "Designated Currency" has the meaning specified in Section 3.12.

          "Dollar" or "$" means the coin or currency of the United States of
America as at the time of payment is legal tender for the payment of public and
private debts.

          "Eligible Instruments" means U.S. Government Obligations.

          "Euroclear" means Morgan Guarantee Trust Company of New York, Brussels
Office, as operator of the Euroclear System.

          "Euro" means the European currency in use by those European Union
countries participating in the system of economic and monetary union established
by the Maastricht Treaty of 1992.

          "Event of Default" has the meaning specified in Section 5.1.

          "Exchange Rate" shall have the meaning specified as contemplated in
Section 3.1.

          "Exchange Rate Agent" shall have the meaning specified as contemplated
in Section 3.1.

          "Exchange Rate Officer's Certificate", with respect to any date for
the payment of principal of (and premium, if any) and interest on any series of
Debt Securities, means a certificate setting forth the applicable Exchange Rate
and the amounts payable in Dollars and Foreign Currencies in respect of the
principal of (and premium, if any) and interest on Debt Securities denominated
in Euros, and other composite currency or Foreign Currency, and signed by the
Chairman of the Board, a Vice Chairman of the Board, the President, the
Treasurer or any Assistant Treasurer of the Company or the Exchange Rate Agent
appointed pursuant to Section 3.1, and delivered to the Trustee.

          "Foreign Currency" means a currency issued by the government of any
country other than the United States of America.

          "Global Exchange Agent" has the meaning specified in Section 3.4.

          "Global Exchange Date" has the meaning specified in Section 3.4.


                                       -4-
<PAGE>   13
          "Global Security" means a Debt Security issued to evidence all or part
of a series of Debt Securities in accordance with Section 3.3(c).

          "Holder", with respect to a Registered Security, means a Person in
whose name such Registered Security is registered in the Security Register and,
with respect to a Bearer Security or a coupon, means the bearer thereof.

          "Indenture" means this instrument as originally executed or as it may
from time to time be supplemented, amended or restated by or pursuant to one or
more indentures supplemental hereto entered into pursuant to the applicable
provisions hereof and, unless the context otherwise requires, shall include the
terms of a particular series of Debt Securities established as contemplated by
Section 3.1.

          The term "interest", when used with respect to an Original Issue
Discount Security which by its terms bears interest only after Maturity, means
interest payable after Maturity.

          "Interest Payment Date", with respect to any Debt Security, means the
Stated Maturity of an installment of interest on such Debt Security.

          "Maturity", when used with respect to any Debt Security, means the
date on which the principal of such Debt Security becomes due and payable as
therein or herein provided, whether at the Stated Maturity or by declaration of
acceleration, call for redemption, repayment at the option of the Holder or
otherwise.

          "Officers' Certificate" means a certificate signed by the Chairman of
the Board, a Vice Chairman of the Board, the President or a Vice President, and
by the Treasurer, an Assistant Treasurer, the Controller, an Assistant
Controller, the Secretary or an Assistant Secretary of the Company, and
delivered to the Trustee.

          "Opinion of Counsel" means a written opinion of counsel, who may
(except as otherwise expressly provided in this Indenture) be counsel for the
Company, or who may be other counsel acceptable to the Trustee, which is
delivered to the Trustee.

          "Original Issue Discount Security" means any Debt Security which
provides for an amount less than the principal amount thereof to be due and
payable upon a declaration of acceleration of the Maturity thereof pursuant to
Section 5.2.

          "Outstanding", when used with respect to Debt Securities means, as of
the date of determination, all Debt Securities theretofore authenticated and
delivered under this Indenture, except:

          (i) Debt Securities theretofore cancelled by the Trustee or delivered
     to the Trustee for cancellation;

          (ii) Debt Securities or portions thereof for whose payment or
     redemption money in the necessary amount has been theretofore deposited
     with the Trustee or any Paying


                                       -5-
<PAGE>   14
     Agent (other than the Company) in trust or set aside and segregated in
     trust by the Company (if the Company shall act as its own Paying Agent) for
     the Holders of such Debt Securities and any coupons appertaining thereto;
     provided, however, that if such Debt Securities are to be redeemed, notice
     of such redemption has been duly given pursuant to this Indenture or
     provision therefor satisfactory to the Trustee has been made;

          (iii) Debt Securities in exchange for or in lieu of which other Debt
     Securities have been authenticated and other than any such securities in
     respect of which there shall have been presented to the Trustee proof
     satisfactory to it that such securities are held by a bona fide purchaser
     in whose hands such securities are valid obligations of the Company
     delivered, or which have been paid, pursuant to this Indenture; and

          (iv) Securities which have been defeased pursuant to Section 15.1;

provided, however, that in determining whether the Holders of the requisite
principal amount of Debt Securities Outstanding have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (i) the principal
amount of an Original Discount Security that shall be deemed to be Outstanding
shall be the amount of the principal thereof that would be due and payable as of
the date of such determination upon acceleration of the Maturity thereof
pursuant to Section 5.2, (ii) the principal amount of a Debt Security
denominated on one or more Foreign Currencies or currency units shall be the
Dollar equivalent, determined in the manner provided as contemplated by Section
3.1 on the date of original issuance of such Debt Security, of the principal
amount (or, in the case of an Original Issue Discount Security, the Dollar
equivalent on the date of original issuance of such Debt Security of the amount
determined as provided in clause (i) above) of such Debt Security, and (iii)
Debt Securities owned by the Company or any other obligor upon the Debt
Securities or any Affiliate of the Company or of such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in relying upon such request, demand,
authorization, direction, notice, consent or waiver, only Debt Securities which
the Trustee knows to be so owned shall be so disregarded. Debt Securities so
owned which have been pledged in good faith may be regarded as Outstanding if
the pledgee establishes to the satisfaction of the Trustee the pledgee's right
so to act with respect to such Debt Securities and that the pledgee is not the
Company or any other obligor upon the Debt Securities or any Affiliate of the
Company or of such other obligor.

          "Paying Agent" means any Person authorized by the Company to pay the
principal of (and premium, if any) or interest on any Debt Securities on behalf
of the Company.

          "Person" means any individual, corporation, partner ship, joint
venture, association, joint-stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.

          "Place of Payment", when used with respect to the Debt Securities of
any series means any place where the principal of (and premium, if any) and
interest on the Debt Securities of that series are payable as specified as
contemplated by Section 3.1.


                                       -6-
<PAGE>   15
          "Predecessor Security" of any particular Debt Security means every
previous Debt Security evidencing all or a portion of the same debt as that
evidenced by such particular Debt Security; and, for the purposes of this
definition, any Debt Security authenticated and delivered under Section 3.6 in
lieu of a lost, destroyed or stolen Debt Security shall be deemed to evidence
the same debt as the lost, destroyed or stolen Debt Security.

          "Principal Subsidiary Bank" means any Subsidiary Bank at the time
having total assets as set forth in its most recent statement of condition equal
to more than 10% of the total consolidated assets of the Company and its
Subsidiaries determined on a consolidated basis from the Company's most recent
financial statements filed with the Commission pursuant to the Securities
Exchange Act of 1934.

          "Redemption Date", when used with respect to any Debt Security to be
redeemed, means the date fixed for such redemption by or pursuant to this
Indenture.

          "Redemption Price", when used with respect to any Debt Security to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

          "Registered Security" means any Debt Security in the form of
Registered Securities established pursuant to Section 2.1 which is registered in
the Security Register.

          "Regular Record Date" for the interest payable on any Interest Payment
Date on the Registered Securities of any series means the date specified for
that purpose as contemplated by Section 3.1.

          "Remarketing Entity", when used with respect to Debt Securities of any
series which are repayable at the option of the Holders thereof before their
Stated Maturity, means any person designated by the Company to purchase any such
Debt Securities.

          "Repayment Date", when used with respect to any Debt Security to be
repaid upon exercise of option for repayment by the Holder, means the date fixed
for such repayment pursuant to this Indenture.

          "Repayment Price", when used with respect to any Debt Security to be
repaid upon exercise of option for repayment by the Holder, means the price at
which it is to be repaid pursuant to this Indenture.

          "Responsible Officer" when used with respect to the Trustee, means any
officer of the Trustee assigned by it to administer its corporate trust matters.

          "Security Register" and "Security Registrar" have the respective
meanings specified in Section 3.5.

          "Special Record Date" for the payment of any Defaulted Interest means
a date fixed by the Trustee pursuant to Section 3.7.


                                       -7-
<PAGE>   16
          "Stated Maturity", when used with respect to any Debt Security or any
installment of interest thereon, means the date specified in such Debt Security
or a coupon representing such installment of interest as the fixed date on which
the principal of such Debt Security or such installment is due and payable.

          "Subsidiary" means any corporation more than 50% of the outstanding
shares of Voting Stock, except for directors' qualifying shares, of which shall
at the time be owned, directly or indirectly, by the Company or by one or more
of the Subsidiaries, or by the Company and one or more other Subsidiaries.

          "Subsidiary Bank" means any commercial bank or trust company organized
in the United States under Federal or state law, at least a majority of the
shares of the Voting Stock of which shall at the time be owned, directly or
indirectly, by the Company or by one or more Subsidiaries or by the Company and
one or more Subsidiaries.

          "Trust Indenture Act" means the Trust Indenture Act of 1939 as in
force at the date as of which this instrument was executed, except as provided
in Section 9.5.

          "Trustee" means the Person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean or include each Person who is then a Trustee hereunder, and
if at any time there is more than one such Person, "Trustee" as used with
respect to the Debt Securities of any series shall mean the Trustee with respect
to Debt Securities of that series.

          "United States" means the United States of America (including the
District of Columbia) and its possessions which include Puerto Rico, the U.S.
Virgin Islands, Guam, American Samoa, Wake Island, and the Northern Mariana
Islands.

          "United States Alien" means any Person who, for United States Federal
income tax purposes, is a foreign corporation, a non-resident alien individual,
a non-resident alien fiduciary of a foreign estate or trust, or a foreign
partnership one or more of the members of which is, for United States Federal
income tax purposes, a foreign corporation, a non-resident alien individual or a
non-resident alien fiduciary of a foreign estate or trust.

          "U.S. Government Obligations" means direct obligations of the United
States for the payment of which its full faith and credit is pledged, or
obligations of a person controlled or supervised by and acting as an agency or
instrumentality of the United States the timely payment of which is
unconditionally guaranteed as a full faith and credit obligation by the United
States of America, which in either case are not callable or redeemable at the
option of the issuer thereof.

          "Voting Stock", as applied to the stock (or the equivalent thereof) of
any corporation, means stock (or the equivalent thereof) of any class or
classes, however designated, having ordinary voting power for the election of a
majority of the directors of such corporation, other than stock (or such
equivalent) having such power only by reason of the happening of a contingency.


                                       -8-
<PAGE>   17
          SECTION 1.2. Compliance Certificates and Opinions.

          Upon any application or request by the Company to the Trustee to take
any action under any provision of this Indenture (other than the delivery of any
Debt Security to the Trustee for authentication pursuant to Section 3.3), the
Company shall furnish to the Trustee, if so requested by the Trustee, an
Officers' Certificate stating that all conditions precedent, if any, provided
for in this Indenture relating to the proposed action have been complied with
and an Opinion of Counsel stating that in the opinion of such counsel all such
conditions precedent, if any, have been complied with, except that in the case
of any such application or request as to which the furnishing of such documents
is specifically required by any provision of this Indenture relating to such
particular application or request, no additional certificate or opinion need be
furnished.

          Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include:

          (1) a statement that each individual signing such certificate or
     opinion has read such covenant or condition and the definition herein
     relating thereto;

          (2) a brief statement as to the nature and scope of the examination or
     investigation upon which the statements or opinions contained in such
     certificate or opinion are based;

          (3) a statement that, in the opinion of each such individual, he or
     she has made such examination or investigation as is necessary to enable
     him or her to express an informed opinion as to whether or not such
     covenant or condition has been complied with; and

          (4) a statement as to whether, in the opinion of each such individual,
     such condition or covenant has been complied with.

          SECTION 1.3. Form of Documents Delivered to Trustee.

          In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

          Any certificate or opinion of an officer of the Company may be based,
insofar as it relates to legal matters, upon a certificate or opinion of, or
representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his or her certificate or opinion is
based is erroneous. Any such certificate or Opinion of Counsel may be based,
insofar as it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or offi-


                                       -9-
<PAGE>   18
cers of the Company stating that the information with respect to such factual
matters is in the possession of the Company, unless such counsel knows, or in
the exercise of reasonable care should know, that the certificate or opinions or
representations with respect to such matters is erroneous.

          Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

          SECTION 1.4. Acts of Holders.

          (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by an agent duly
appointed in writing. If Debt Securities of a series are issuable in whole or in
part as Bearer Securities, any request, demand, authorization, direction,
notice, consent, waiver or other action provided by this Indenture to be given
or taken by Holders may, alternatively, be embodied in and evidenced by the
record of Holders of Debt Securities voting in favor thereof, either in person
or by proxies duly appointed in writing, at any meeting of Holders of Debt
Securities duly called and held in accordance with the provisions of Article
Fourteen, or a combination of such instruments and any such record. Except as
herein otherwise expressly provided, such action shall become effective when
such instrument or instruments or record or both are delivered to the Trustee,
and, where it is hereby expressly required, to the Company. Such instrument or
instruments and any such record (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Holders signing
such instrument or instruments and so voting at any such meeting. Proof of
execution of any such instrument or of a writing appointing any such agent, or
the holding by any Person of a Debt Security, shall be sufficient for any
purpose of this Indenture and (subject to Section 6.1) conclusive in favor of
the Trustee and the Company, if made in the manner provided in this Section. The
record of any meeting of Holders of Debt Securities shall be proved in the
manner provided in Section 14.6.

          (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved in any manner which the Trustee deems
sufficient.

          (c) The ownership of Registered Securities shall be proved by the
Security Register.

          (d) The principal amount and serial numbers of Bearer Securities held
by any Person, and the date of holding the same, may be proved by the production
of such Bearer Securities or by a certificate executed, as depositary, by any
trust company, bank, banker or other depositary, wherever situated, if such
certificate shall be deemed by the Trustee to be satisfactory, showing that at
the date therein mentioned such Person had on deposit with such depositary, or
exhibited to it, the Bearer Securities in the amount and with the serial numbers
therein described; or such facts may be proved by the certificate or affidavit
of the Person holding such Bearer Securities, if such certificate or affidavit
is deemed by the Trustee to be satisfactory. The Trustee


                                      -10-
<PAGE>   19
and the Company may assume that such ownership of any Bearer Security continues
until (1) another certificate or affidavit bearing a later date issued in
respect of the same Bearer Security is produced, or (2) such Bearer Security is
produced to the Trustee by some other person, or (3) such Bearer Security is
surrendered in exchange for a Registered Security, or (4) such Bearer Security
is no longer Outstanding.

          (e) The fact and date of execution of any such instrument or writing,
the authority of the Person executing the same and the principal amount and
serial numbers of Bearer Securities held by the Person so executing such
instrument or writing and the date of holding the same may also be proved in any
other manner which the Trustee deems sufficient; and the Trustee may in any
instance require further proof with respect to any of the matters referred to in
this Section.

          (f) Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Debt Security shall bind every future
holder of the same Debt Security and the Holder of every Debt Security issued
upon the registration of transfer thereof or in exchange therefor or in lieu
thereof in respect of anything done, suffered or omitted by the Trustee or the
Company in reliance thereon, whether or not notation of such action is made upon
such Debt Security.

          (g) For purposes of determining the principal amount of Outstanding
Debt Securities of any series of Holders of which are required, requested or
permitted to give any request, demand, authorization, direction, notice,
consent, waiver or take any other Act under this Indenture, (i) each Original
Issue Discount Security shall be deemed to have the principal amount determined
by the Trustee that could be declared to be due and payable pursuant to the
terms of such Original Issue Discount Security as of the date there is delivered
to the Trustee and, where it is hereby expressly required, to the Company, such
Act by Holders of the required aggregate principal amount of the Outstanding
Debt Securities of such series and (ii) each Debt Security denominated in a
Foreign Currency or composite currency shall be deemed to have the principal
amount determined by the Exchange Rate Agent by converting the principal amount
of such Debt Security in the currency in which such Debt Security is denominated
into Dollars at the Exchange Rate as of the date such Act is delivered to the
Trustee and, where it is hereby expressly required, to the Company, by Holders
of the required aggregate principal amount of the Outstanding Debt Securities of
such series (or, if there is no such rate on such date, such rate on the date
determined as specified as contemplated in Section 3.1).

          (h) The Company may set a record date for purposes of determining the
identity of Holders of Debt Securities of any series entitled to vote or consent
to any action by vote or consent authorized or permitted by Section 5.12 or
Section 5.13. Such record date shall be the later of 30 days prior to the first
solicitation of such consent or the date of the most recent list of Holders of
such Debt Securities furnished to the Trustee pursuant to Section 7.1 prior to
such solicitation.


                                      -11-
<PAGE>   20
          SECTION 1.5. Notices, etc., to Trustee and Company.

          Any request, demand, authorization, direction, notice, consent, waiver
or other Act of Holders or other document provided or permitted by this
Indenture to be made upon, given or furnished to, or filed with,

          (1) the Trustee by any Holder or by the Company shall be sufficient
     for every purpose hereunder (unless otherwise herein expressly provided),
     if made, given, furnished or filed in writing to or with the Trustee at its
     Corporate Trust Office, Attention: Corporate Trust Department or

          (2) the Company by the Trustee or by any Holder shall be sufficient
     for every purpose hereunder (unless otherwise herein expressly provided) if
     in writing and mailed, first-class postage prepaid, to the Company
     addressed to the attention of its Secretary at the address of its principal
     office specified in the first paragraph of this instrument or at any other
     address previously furnished in writing to the Trustee by the Company.

          SECTION 1.6. Notice to Holders; Waiver.

          Except as otherwise expressly provided herein, where this Indenture
provides for notice to Holders of any event, (1) such notice shall be
sufficiently given to Holders of Registered Securities if in writing and mailed,
first-class postage prepaid, to each Holder of a Registered Security affected by
such event, at such Holder's address as it appears in the Security Register, not
later than the latest date, and not earlier than the earliest date, prescribed
for the giving of such notice; and (2) such notice shall be sufficiently given
to Holders of Bearer Securities by publication thereof in an Authorized
Newspaper in The City of New York and, if the Debt Securities of such series are
then listed on The International Stock Exchange of the United Kingdom and the
Republic of Ireland and such stock exchange shall so require, in London, and, if
the Debt Securities of such series are then listed on the Luxembourg Stock
Exchange and such stock exchange shall so require, in Luxembourg and, if the
Debt Securities of such series are then listed on any other stock exchange
outside the United States and such stock exchange shall so require, in any other
required city outside the United States or, if not practicable, in Europe on a
Business Day at least twice, the first such publication to be not later than the
latest date and not earlier than the earliest date prescribed for the giving of
such notice.

          In case, by reason of the suspension of or irregularities in regular
mail service or for any other reason, it shall be impossible or impracticable to
mail notice of any event to Holders when said notice is required to be given
pursuant to any provision of this Indenture or of the Debt Securities, then any
manner of giving such notice as shall be satisfactory to the Trustee shall be
deemed to be a sufficient giving of such notice. In any case where notice to
Holders of Registered Securities is to be given by mail, neither the failure to
mail such notice, nor any defect in any notice so mailed, to any particular
Holder of a Registered Security shall affect the sufficiency of such notice with
respect to other Holders of Registered Securities or the sufficiency of any
notice by publication to Holders of Bearer Securities given as provided above.


                                      -12-
<PAGE>   21
          In case, by reason of the suspension of publication of any Authorized
Newspaper, or by reason of any other cause, it shall be impossible or
impracticable to make publication of any notice to Holders of Bearer Securities
as provided above, then such method of publication or notification as shall be
made with the approval of the Trustee shall constitute a sufficient publication
of such notice. Neither failure to give notice by publication to Holders of
Bearer Securities as provided above, nor any defect in any notice so published,
shall affect the sufficiency of any notice mailed to Holders of Registered
Securities as provided above.

          Where this Indenture provides for notice in any manner, such notice
may be waived in writing by the Person entitled to receive such notice, either
before or after the event, and such waiver shall be the equivalent of such
notice. Waivers of notice by Holders shall be filed with the Trustee, but such
filing shall not be a condition precedent to the validity of any action taken in
reliance upon such waiver.

          Any request, demand, authorization, direction, notice, consent,
election, waiver or other Act required or permitted under this Indenture shall
be in the English language, except that any published notice may be in an
official language of the country of publication.

          SECTION 1.7. Conflict with Trust Indenture Act.

          If any provision hereof limits, qualifies or conflicts with another
provision hereof which is required to be included in this Indenture by any of
the provisions of the Trust Indenture Act, such required provision shall
control.

          SECTION 1.8. Effect of Headings and Table of Contents.

          The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

          SECTION 1.9. Successors and Assigns.

          All covenants and agreements in this Indenture by the Company shall
bind its successors and assigns, whether expressed or not.

          SECTION 1.10. Separability Clause.

          In case any provision in this Indenture or in the Debt Securities or
coupons shall be invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

          SECTION 1.11. Benefits of Indenture.

          Nothing in this Indenture or in the Debt Securities or coupons,
express or implied, shall give to any Person, other than the parties hereto and
their successors hereunder, any Paying Agent and the Holders any benefit or any
legal or equitable right, remedy or claim under this Indenture.


                                      -13-
<PAGE>   22
          SECTION 1.12. Governing Law.

          This Indenture and the Debt Securities and coupons shall be governed
by and construed in accordance with the laws of the State of Wisconsin.

          SECTION 1.13. Legal Holidays.

          In any case where any Interest Payment Date, Redemption Date,
Repayment Date or Stated Maturity of any Debt Security shall not be a Business
Day at any Place of Payment, then (notwithstanding any other provision of this
Indenture or of the Debt Securities or coupons) payment of interest or principal
(and premium, if any) need not be made at such Place of Payment on such date,
but may be made on the next succeeding Business Day at such Place of Payment
with the same force and effect as if made on the Interest Payment Date,
Redemption Date, Repayment Date or Stated Maturity, and no interest shall accrue
for the period from and after such Interest Payment Date, Redemption Date,
Repayment Date or Stated Maturity, as the case may be.

          SECTION 1.14. Counterparts.

          This Indenture may be executed in any number of counter parts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same Indenture.

                                   ARTICLE TWO

                               DEBT SECURITY FORMS


          SECTION 2.1. Forms Generally.

          The Registered Securities, if any, and the Bearer Securities and
related coupons, if any, of each series shall be in substantially the form
(including temporary or permanent global form) as shall be established in or
pursuant to a Board Resolution or in one or more indentures supplemental hereto,
in each case with such appropriate insertions, omissions, substitutions and
other variations as are required or permitted by this Indenture, and may have
such letters, numbers or other marks of identification and such legends or
endorsements placed thereon, as may be required to comply with the rules of any
securities exchange, or as may, consistently herewith, be determined by the
officers executing such Debt Securities or coupons, as evidenced by their
signatures on the Debt Securities or coupons. If the form of Debt Securities of
any series or coupons (including any such Global Security) is established by
action taken pursuant to a Board Resolution, a copy of an appropriate record of
such action shall be certified by the Secretary or an Assistant Secretary of the
Company and delivered to the Trustee at or prior to the delivery of the Company
Order contemplated by Section 3.3 or the authentication and delivery of such
Debt Securities or coupons.


                                      -14-
<PAGE>   23
          Unless otherwise specified as contemplated by Section 3.1, Debt
Securities in bearer form other than Debt Securities in temporary or permanent
global form shall have coupons attached.

          The definitive Debt Securities and coupons, if any, shall be printed,
lithographed or engraved on steel engraved borders or may be produced in any
other manner, all as determined by the officers executing such Debt Securities,
as evidenced by the execution of such Debt Securities and coupons.

          SECTION 2.2. Form of Trustee's Certificate of Authentication.

          The Trustee's certificate of authentication shall be in substantially
the following form:

          This is one of the Debt Securities, of the series designated herein,
described in the within-mentioned Indenture.

                                        [_____________________________]
                                        as Trustee

                                        By____________________________

                                        Authorized Officer

          SECTION 2.3. Debt Securities in Global Form.

          If Debt Securities of a series are issuable in whole or in part in
global form, as specified as contemplated by Section 3.1, then, notwithstanding
clause (10) of Section 3.1 and the provisions of Section 3.2, such Global
Security shall represent such of the Outstanding Debt Securities of such series
as shall be specified therein and may provide that it shall represent the
aggregate amount of Outstanding Debt Securities from time to time endorsed
thereon and that the aggregate amount of Outstanding Debt Securities represented
thereby may from time to time be reduced to reflect exchanges. Any endorsement
of a Global Security to reflect the amount, or any increase or decrease in the
amounts of Outstanding Debt Securities represented thereby shall be made in such
manner and upon instructions given by such Person or Persons as shall be
specified therein or in the Company Order to be delivered to the Trustee
pursuant to Section 3.3 or Section 3.4.

          The provisions of the last sentence of Section 3.3(g) shall apply to
any Debt Securities represented by a Debt Security in global form if such Debt
Security was never issued and sold by the Company and the Company delivers to
the Trustee the Debt Security in global form together with written instructions
(which need not comply with Section 1.2 and need not be accompanied by an
Opinion of Counsel) with respect to the reduction in the principal amount of
Debt Securities represented thereby, together with the written statement
contemplated by the last sentence of Section 3.3(g).


                                      -15-
<PAGE>   24
          Global Securities may be issued in either registered or bearer form
and in either temporary or permanent global form.

                                  ARTICLE THREE

                               THE DEBT SECURITIES

          SECTION 3.1. Amount Unlimited; Issuance in Series.

          The aggregate principal amount of Debt Securities which may be
authenticated and delivered under this Indenture is unlimited.

          The Debt Securities may be issued in one or more series. There shall
be established in or pursuant to a Board Resolution, and set forth in an
Officers' Certificate, or established in one or more indentures supplemental
hereto, prior to the issuance of Debt Securities of any series:

          (1) the title of the Debt Securities of the series (which shall
     distinguish the Debt Securities of the series from all other Debt
     Securities);

          (2) the limit, if any, upon the aggregate principal amount of the Debt
     Securities of the series which may be authenticated and delivered under
     this Indenture (except for Debt Securities authenticated and delivered upon
     registration of transfer of, or in exchange for, or in lieu of, other Debt
     Securities of the series pursuant to Section 3.4, 3.5, 3.6, 9.6, 11.7 or
     13.3 and except for any Debt Securities which, pursuant to Section 3.3, are
     deemed never to have been authenticated and delivered hereunder);

          (3) the date or dates on which the principal and premium, if any, of
     the Debt Securities of the series are payable;

          (4) the rate or rates, if any, at which the Debt Securities of the
     series shall bear interest, or the method or methods by which such rate or
     rates may be determined, the date or dates from which such interest shall
     accrue, the Interest Payment Dates on which such interest shall be payable,
     the Regular Record Date for the interest payable on any Registered Security
     on any Interest Payment Date and the circumstances, if any, in which the
     Company may defer interest payments;

          (5) the place or places where, subject to the provisions of Section
     10.2, the principal of (and premium, if any) and interest on Debt
     Securities of the series shall be payable, any Registered Securities of the
     series may be surrendered for registration of transfer, Debt Securities of
     the series may be surrendered for exchange and notices and demands to or
     upon the Company in respect of the Debt Securities of the series and this
     Indenture may be served and where notices to Holders pursuant to Section
     1.6 will be published;


                                      -16-
<PAGE>   25
          (6) if applicable, the period or periods within which or the date or
     dates on which, the price or prices at which and the terms and conditions
     upon which Debt Securities of the series may be redeemed, in whole or in
     part, at the option of the Company;

          (7) the obligation, if any, of the Company to redeem, repay or
     purchase Debt Securities of the series pursuant to any sinking fund or
     analogous provisions or at the option of a Holder thereof and the period or
     periods within which, the price or prices at which and the terms and
     conditions upon which Debt Securities of the series shall be redeemed,
     repaid or purchased, in whole or in part, pursuant to such obligation;

          (8) whether Debt Securities of the series are to be issuable as
     Registered Securities, Bearer Securities or both, whether Debt Securities
     of the series are to be issuable with or without coupons or both and, in
     the case of Bearer Securities, the date as of which such Bearer Securities
     shall be dated if other than the date of original issuance of the first
     Debt Security of such series of like tenor and term to be issued;

          (9) whether the Debt Securities of the series shall be issued in whole
     or in part in the form of a Global Security or Securities and, in such
     case, the Depositary and Global Exchange Agent for such Global Security or
     Securities, whether such global form shall be permanent or temporary and,
     if applicable, the Global Exchange Date;

          (10) if Debt Securities of the series are to be issuable initially in
     the form of a temporary Global Security, the circumstances under which the
     temporary Global Security can be exchanged for definitive Debt Securities
     and whether the definitive Debt Securities will be Registered and/or Bearer
     Securities and will be in global form and whether interest in respect of
     any portion of such Global Security payable in respect of an Interest
     Payment Date prior to the Global Exchange Date shall be paid to any
     clearing organization with respect to a portion of such Global Security
     held for its account and, in such event, the terms and conditions
     (including any certification requirements) upon which any such interest
     payment received by a clearing organization will be credited to the Persons
     entitled to interest payable on such Interest Payment Date if other than as
     provided in this Article Three;

          (11) whether, and under what conditions, additional amounts will be
     payable to Holders of Debt Securities of the series pursuant to Section
     10.6;

          (12) the denominations in which any Registered Securities of the
     series shall be issuable, if other than denominations of $1,000 and any
     integral multiple thereof, and the denominations in which any Bearer
     Securities of such series shall be issuable, if other than the denomination
     of $5,000;

          (13) if other than the principal amount thereof, the portion of the
     principal amount of Debt Securities of the series which shall be payable
     upon declaration of acceleration of the Maturity thereof pursuant to
     Section 5.2;


                                      -17-
<PAGE>   26
          (14) the currency or currencies of denomination of the Debt Securities
     of any series, which may be in Dollars, any Foreign Currency or any
     composite currency, including but not limited to the Euro, and, if any such
     currency of denomination is a composite currency other than the Euro, the
     agency or organization, if any, responsible for overseeing such composite
     currency;

          (15) the currency or currencies in which payment of the principal of
     (and premium, if any) and interest on the Debt Securities will be made, the
     currency or currencies, if any, in which payment of the principal of (and
     premium, if any) or the interest on Registered Securities, at the election
     of each of the Holders thereof, may also be payable and the periods within
     which and the terms and conditions upon which such election is to be made
     and the Exchange Rate and Exchange Rate Agent;

          (16) if the amount of payments of principal of (and premium, if any)
     or interest on the Debt Securities of the series may be determined with
     reference to an index based on a currency or currencies other than that in
     which the Debt Securities are denominated or designated to be payable, the
     manner in which such amounts shall be determined;

          (17) if payments of principal of (and premium, if any) or interest on
     the Debt Securities of the series are to be made in a Foreign Currency
     other than the currency in which such Debt Securities are denominated, the
     manner in which the Exchange Rate with respect to such payments shall be
     determined or if the Exchange Rate is to be determined otherwise than as
     provided in Section 1.1;

          (18) any Events of Default with respect to Debt Securities of such
     series, if not set forth herein;

          (19) any other covenant or warranty included for the benefit of the
     Debt Securities of the series in addition to (and not inconsistent with)
     those set forth herein for the benefit of Debt Securities of all series, or
     any other covenant or warranty included for the benefit of Debt Securities
     of the series in lieu of any covenant or warranty set forth herein for the
     benefit of Debt Securities of all series, or any provision that any
     covenant or warranty set forth herein for the benefit of Debt Securities of
     all series shall not be for the benefit of Debt Securities of such series,
     or any combination of such covenants, warranties or provisions and the
     applicability, if any, of the provisions of Section 10.8 to such covenants
     and warranties;

          (20) the terms and conditions, if any, pursuant to which the Company's
     obligations under this Indenture may be terminated through the deposit of
     money or Eligible Instruments as provided in Articles Four and Fifteen;

          (21) the Person or Persons who shall be Security Registrar for the
     Debt Securities of such series if other than the Trustee, and the place or
     places where the Security Register for such series shall be maintained and
     the Person or Persons who will be the initial Paying Agent or Agents, if
     other than the Trustee; and


                                      -18-
<PAGE>   27
          (22) any other terms of the series (which terms shall not be
     inconsistent with the provisions of this Indenture).

          All Debt Securities of any one series and the coupons appertaining to
Bearer Securities of such series, if any, shall be substantially identical
except, in the case of Registered Securities, as to denomination and except as
may otherwise be provided in or pursuant to such Board Resolution and set forth
in such Officers' Certificate or in any such indenture supplemental hereto.

          Debt Securities of any particular series may be issued at various
times, with different dates on which the principal or any installment of
principal is payable, with different rates of interest, if any, or different
methods by which rates of interest may be determined, with different dates on
which such interest may be payable and with different Redemption or Repayment
Dates and may be denominated in different currencies or payable in different
currencies.

          If any of the terms of a series of Debt Securities are established by
action taken pursuant to a Board Resolution, a copy of an appropriate record of
such action shall be certified by the Secretary or an Assistant Secretary of the
Company and delivered to the Trustee at or prior to the delivery of the
Officers' Certificate setting forth the terms of the series.

          SECTION 3.2. Denominations.

          Debt Securities of each series shall be issuable in such form and
denominations as shall be specified in the form of Debt Security for such series
approved or established pursuant to Section 2.1 or in the Officers' Certificate
delivered pursuant to Section 3.1. In the absence of any specification with
respect to the Debt Securities of any series, the Registered Securities of such
series, if any, shall be issuable in denominations of $1,000 and any integral
multiple thereof and the Bearer Securities of such series, if any, shall be
issuable in the denominations of $5,000.

          SECTION 3.3. Execution, Authentication, Delivery and Dating.

          (a) The Debt Securities shall be executed on behalf of the Company by
its Chairman of the Board, a Vice Chairman of the Board, the President or a Vice
President, and by its Treasurer or one of its Assistant Treasurers or its
Secretary or one of its Assistant Secretaries under its corporate seal
reproduced thereon. The signature of any of these officers on the Debt
Securities may be manual or facsimile. Coupons shall bear the facsimile
signature of an authorized officer of the Company.

          Debt Securities and coupons bearing the manual or facsimile signatures
of individuals who were at any time the proper officers of the Company shall
bind the Company, notwithstanding that such individuals or any of them have
ceased to hold such offices prior to the authentication and delivery of such
Debt Securities or coupons of any series or did not hold such offices at the
date of such Debt Securities or coupons.

          (b) At any time and from time to time after the execution and delivery
of this Indenture, Debt Securities of any series may be executed by the Company
and delivered to the


                                      -19-
<PAGE>   28
Trustee for authentication, and, except as otherwise provided in this Article
Three, shall thereupon be authenticated and delivered by the Trustee upon
Company Order, without any further action by the Company; provided, however,
that, in connection with its original issuance or any sale during the
"restricted period" as defined in Section 1.163-5(c)(2)(i)(b)(7) of the U.S.
Treasury Regulations, a Bearer Security may be delivered only outside the United
States and, except in the case of a temporary Global Security, only if the
Company or its agent shall have received the certification required pursuant to
Sections 3.4(b)(iii) and (iv), unless such certification shall have been
provided earlier pursuant to section 3.4(b)(v) hereof, and only if the Company
has no reason to know that such certification is false.

          To the extent authorized in or pursuant to a Board Resolution and set
forth in an Officers' Certificate, or established in one or more indentures
supplemental hereto, such written Company Order may be given by any one officer
or employee of the Company, may be electronically transmitted, and may provide
instructions as to registration of holders, principal amounts, rates of
interest, maturity dates and other matters contemplated by such Board Resolution
and Officers' Certificate or supplemental indenture to be so instructed in
respect thereof. Before authorizing and delivering the first Debt Securities of
any series (and upon request of the Trustee thereafter), the Company shall
deliver to the Trustee (i) the certificates called for under Sections 2.1 and
3.1 hereof and (ii) an Opinion of Counsel described in the next sentence.

          In authenticating such Debt Securities, and accepting the additional
responsibilities under this Indenture in relation to any Debt Securities, the
Trustee shall be entitled to receive, prior to the initial authentication of
such Debt Securities, and (subject to Section 6.1) shall be fully protected in
relying upon:

          (i) Board Resolution relating thereto and, if applicable, an
     appropriate record of any action taken pursuant to such resolution
     certified by the Secretary or an Assistant Secretary of the Company;

          (ii) an executed supplemental indenture, if any, relating thereto;

          (iii) an Officers' Certificate setting forth the form and terms of the
     Debt Securities of such series and coupons, if any, pursuant to Sections
     2.1 and 3.1 and stating that all conditions precedent provided for in this
     Indenture relating to the issuance of such Debt Securities have been
     complied with; and

          (iv) an Opinion of Counsel stating

               (A) that the form of such Debt Securities and coupons, if any,
          has been established in or pursuant to a Board Resolution or by a
          supplemental indenture as permitted by Section 2.1 in conformity with
          the provisions of this Indenture;

               (B) that the terms of such Debt Securities and coupons, if any,
          have been established in or pursuant to a Board Resolution or by a
          supplemental indenture as permitted by Section 3.1 in conformity with
          the provisions of this Indenture; and


                                      -20-
<PAGE>   29
               (C) that such Debt Securities and coupons, if any, when
          authenticated and delivered by the Trustee and issued by the Company
          in the manner and subject to any conditions specified in such Opinion
          of Counsel, will constitute valid and binding obligations of the
          Company, enforceable in accordance with their terms, subject, as to
          enforcement of remedies, to applicable bankruptcy, reorganization,
          insolvency, moratorium or other laws affecting creditors' rights
          generally and the application of general principles of equity and
          except further as enforcement thereof may be limited by (i)
          requirements that a claim with respect to any Debt Securities
          denominated other than in Dollars (or a Foreign Currency or currency
          unit judgment in respect of such claim) be converted into Dollars at a
          rate of exchange prevailing on a date determined pursuant to
          applicable law or (ii) governmental authority to limit, delay or
          prohibit the making of payments in Foreign Currencies or currency
          units or payments outside the United States.

          (c) If the Company shall establish pursuant to Section 3.1 that the
Debt Securities of a series are to be issued in whole or in part in the form of
one or more Global Securities, then the Company shall execute and the Trustee
shall, in accordance with this Section and the Company Order with respect to
such series, authenticate and deliver one or more Global Securities in permanent
or temporary form that (i) shall represent and shall be denominated in an
aggregate amount equal to the aggregate principal amount of the Outstanding Debt
Securities of such series to be represented by one or more Global Securities,
(ii) shall be registered in the name of the Depositary for such Global Security
or Securities or the nominee of such Depositary and (iii) shall be delivered by
the Trustee to such Depositary or pursuant to such Depositary's instructions.

          (d) The Trustee shall have the right to decline to authenticate and
deliver any Debt Securities under this Section 3.3 if the issuance of such Debt
Securities will adversely affect the Trustee's own rights, duties or immunities
under the Debt Securities and this Indenture or otherwise in a manner which is
not reasonably acceptable to the Trustee.

          (e) If all the Debt Securities of any series are not to be issued at
one time, it shall not be necessary to deliver an Opinion of Counsel at the time
of issuance of each Debt Security, but such Opinion of Counsel, with appropriate
modifications, may instead be delivered at or prior to the time of the first
issuance of Debt Securities of such series.

          (f) Each Registered Security shall be dated the date of its
authentication. Each Bearer Security shall be dated as of the date specified as
contemplated by Section 3.1.

          (g) No Debt Security or coupon attached thereto shall be entitled to
any benefit under this Indenture or be valid or obligatory for any purpose,
unless there appears on such Debt Security a certificate of authentication
substantially in the form provided for herein executed by the Trustee, and such
certificate upon any Debt Security shall be conclusive evidence, and the only
evidence, that such Debt Security has been duly authenticated and delivered
hereunder. Except as permitted by Section 3.6, the Trustee shall not
authenticate and deliver any Bearer Security unless all appurtenant coupons for
interest then matured have been detached and cancelled.


                                      -21-
<PAGE>   30
Notwithstanding the foregoing, if any Debt Security or portion thereof shall
have been duly authenticated and delivered hereunder but never issued and sold
by the Company, and the Company shall deliver such Debt Security to the Trustee
for cancellation as provided in Section 3.9 together with a written statement
(which need not comply with Section 1.2 and need not be accompanied by an
Opinion of Counsel) stating that such Debt Security or portion thereof has never
been issued and sold by the Company, for all purposes of this Indenture such
Debt Security shall be deemed never to have been authenticated and delivered
hereunder and shall never be entitled to the benefits of this Indenture.

          (h) Each Depositary designated pursuant to Section 3.1 for a Global
Security in registered form must, at the time of its designation and at all
times while it serves as Depositary, be a clearing agency registered under the
Securities Exchange Act of 1934 and any other applicable statute or regulation.

          SECTION 3.4. Temporary Debt Securities.

          (a) Pending the preparation of definitive Debt Securities of any
series, the Company may execute, and upon receipt of documents required by
Sections 3.1 and 3.3, together with a Company Order, the Trustee shall
authenticate and deliver, temporary Debt Securities which are printed,
lithographed, typewritten, mimeographed or otherwise produced, in any
denomination, substantially of the tenor and terms of the definitive Debt
Securities in lieu of which they are issued in registered form or, if
authorized, in bearer form with one or more coupons or without coupons, and with
such appropriate insertions, omissions, substitutions and other variations as
the officers executing such Debt Securities may determine, as evidenced by their
signatures on such Debt Securities. In the case of Debt Securities of any series
issuable as Bearer Securities, such temporary Debt Securities may be in global
form, representing all or any part of the Outstanding Debt Securities of such
series.

          (b) Unless otherwise provided pursuant to Section 3.1:

          (i) Except in the case of temporary Debt Securities in global form, if
     temporary Debt Securities of any series are issued, the Company will cause
     definitive Debt Securities of such series to be prepared without
     unreasonable delay. After the preparation of definitive Debt Securities of
     such series, the related temporary Debt Securities shall be exchangeable
     for such definitive Debt Securities upon surrender of the temporary Debt
     Securities of such series at the office or agency of the Company in the
     Place of Payment for such series, without charge to the Holder. Upon
     surrender for cancellation of any one or more temporary Debt Securities of
     any series (accompanied, if applicable, by all unmatured coupons and all
     matured coupons in default appertaining thereto), the Company shall execute
     and the Trustee shall authenticate and deliver in exchange therefor a like
     principal amount of definitive Debt Securities of the same series of like
     tenor and terms and of authorized denominations; provided, how ever, that
     no definitive Bearer Security shall be delivered in exchange for a
     temporary Registered Security; and provided, further, that a Bearer
     Security shall be delivered in exchange for a Bearer Security only in
     compliance with the conditions set forth in Section 3.5. Until so
     exchanged, the temporary


                                      -22-
<PAGE>   31
     Registered Securities of any series shall in all respects be entitled to
     the same benefits under this Indenture as defined Registered Securities of
     such series.

          (ii) If Debt Securities of any series are issued in temporary global
     form, any such temporary Global Security shall, unless otherwise provided
     pursuant to section 3.1, to be delivered to the Depositary for the benefit
     of Euroclear and CEDEL S.A., for credit to the respective accounts of the
     beneficial owners of such Debt Securities (or to such other accounts as
     they may direct).

          (iii) Without unnecessary delay but in any event not later than the
     date specified in, or determined pursuant to the terms of, any such
     temporary Global Security (the "Global Exchange Date"), the Company shall
     deliver definitive Debt Securities to the Trustee or the agent appointed by
     the Company pursuant to Section 3.1 to effect the exchange of the temporary
     Global Security for definitive Debt Securities (the "Global Exchange
     Agent"), in an aggregate principal amount equal to the principal amount of
     such temporary Global Security, executed by the Company. On or after the
     Global Exchange Date, such temporary Global Security shall be surrendered
     by the Depositary to the Global Exchange Agent, to be exchanged, in whole
     or from time to time in part, for definitive Debt Securities without charge
     and the Trustee or the Global Exchange Agent, if authorized by the Trustee
     pursuant to Section 6.14, shall authenticate and deliver, in exchange for
     each portion of such temporary Global Security, an equal aggregate
     principal amount of definitive Debt Securities of the same series of
     authorized denominations and of like tenor and terms as the portion of such
     temporary Global Security to be exchanged. Upon any exchange of a part of
     such temporary Global Security for definitive Debt Securities, the portion
     of the principal amount and any interest thereon so exchanged shall be
     endorsed by the Global Exchange Agent on a schedule to such temporary
     Global Security, whereupon the principal amount and interest payable with
     respect to such temporary Global Security shall be reduced for all purposes
     by the amount so exchanged and endorsed. The definitive Debt Securities to
     be delivered in exchange for any such temporary Global Security shall be in
     bearer form, registered form, global registered form or global bearer form,
     or any combination thereof, as specified as contemplated by Section 3.1,
     and, if any combination thereof is so specified, as requested by the
     beneficial owner thereof; provided, however, that, in the case of the
     exchange of the temporary Global Security for definitive Bearer Securities
     (including a definitive Global Bearer Security), upon such presentation by
     the Depositary, such temporary Global Security shall be accompanied by a
     certificate signed by Euroclear as to the portion of such temporary Global
     Security held for its account then to be exchanged and a certificate signed
     by CEDEL S.A. as to the portion of such temporary Global Security held for
     its account then to be exchanged, each in the form set forth in Exhibit B
     to this Indenture, unless such certificate(s) shall have been provided
     earlier pursuant to section 3.4(b)(v) hereof; and provided, further, that
     definitive Bearer Securities (including a definitive Global Bearer
     Security) shall be delivered in exchange for a portion of a temporary
     Global Security only in compliance with the requirements of Section 3.3.


                                      -23-
<PAGE>   32
          (iv) The interest of a beneficial owner of Debt Securities of a series
     in a temporary Global Security shall be exchanged for definitive Debt
     Securities of the same series and of like tenor and terms following the
     Global Exchange Date when the account holder instructs Euroclear or CEDEL
     S.A., as the case may be, to request such exchange on such account holder's
     behalf and, in the case of the exchange of the temporary Global Security
     for definitive Bearer Securities (including a definitive Global Bearer
     Security), unless such certificate(s) shall have been provided earlier
     pursuant to Section 3.4(b)(v) hereof, the account holder delivers to
     Euroclear or CEDEL S.A., as the case may be, a certificate in the form set
     forth in Exhibit A-1 and, if applicable, A-2 to this Indenture, dated no
     earlier than 15 days prior to the Global Exchange Date, copies of which
     certificate shall be available from the offices of Euroclear and CEDEL
     S.A., the Global Exchange Agent, any authenticating agent appointed for
     such series of Debt Securities and each Paying Agent. Unless otherwise
     specified in such temporary Global Security, any such exchange shall be
     made free of charge to the beneficial owners of such temporary Global
     Security, except that a Person receiving definitive Debt Securities must
     bear the cost of insurance, postage, transportation and the like in the
     event that such Person does not take delivery of such definitive Debt
     Securities in person at the offices of Euroclear and CEDEL S.A. Definitive
     Debt Securities in bearer form to be delivered in exchange for any portion
     of a temporary Global Security shall be delivered only outside the United
     States.

          (v) Until exchanged in full as hereinabove provided, the temporary
     Debt Securities of any series shall in all respects be entitled to the same
     benefits under this Indenture as definitive Debt Securities of the same
     series and of like tenor and terms authenticated and delivered hereunder,
     except that interest payable on a temporary Global Security on an Interest
     Payment Date shall be payable to Euroclear and CEDEL S.A. on such Interest
     Payment Date only if there has been delivery by Euroclear and CEDEL S.A. to
     the Global Exchange Agent of a certificate or certificates in the form set
     forth in Exhibit B to this Indenture dated no earlier than the first
     Interest Payment Date, for credit without further interest on or after such
     Interest Payment Date to the respective accounts of the Persons who are the
     beneficial owners of such temporary Global Security on such Interest
     Payment Date and who have each delivered to Euroclear or CEDEL S.A., as the
     case may be, a certificate in the form set forth in Exhibit A-1 and, if
     applicable, A-2 to this In denture dated no earlier than the first Interest
     Payment Date. Any interest so received by Euroclear and CEDEL S.A. and not
     paid as herein provided prior to the Global Exchange Date shall be returned
     to the Global Exchange Agent which, upon expiration of two years after such
     Interest Payment Date, shall repay such interest to the Company in
     accordance with Section 10.3.

          SECTION 3.5. Registration; Registration of Transfer and Exchange.

          The Company shall cause to be kept at one of the offices or agencies
to be maintained by the Company in accordance with the provisions of this
Section 3.5 and Section 10.2, with respect to the Debt Securities of each series
which are Registered Securities, a register (herein sometimes referred to as
the "Security Register") in which, subject to such reasonable regulations as it
may prescribe, the Company shall provide for the registration of Registered
Se-


                                      -24-
<PAGE>   33
curities and of transfers of Registered Securities. Pursuant to Section 3.1, the
Company shall appoint, with respect to Debt Securities of each series which are
Registered Securities, a "Security Registrar" for the purpose of registering
such Debt Securities and transfers and exchanges of such Debt Securities as
herein provided.

          Upon surrender for registration of transfer of any Registered Security
of any series at the office or agency of the Company maintained for such
purpose, the Company shall execute, and the Trustee shall authenticate and
deliver, in the name of the designated transferee or transferees, one or more
new Registered Securities of the same series of any authorized denomination or
denominations, of like tenor and terms and aggregate principal amount.

          At the option of the Holder, Registered Securities of any series may
be exchanged for other Registered Securities of the same series of any
authorized denomination or denominations, of like tenor and terms and aggregate
principal amount, and of a like Stated Maturity upon surrender of the Registered
Securities to be exchanged at such office or agency. Whenever any Registered
Securities are surrendered for exchange, the Company shall execute and the
Trustee shall make available for delivery, the Registered Securities which the
Holder is entitled to receive. Bearer Securities may not be delivered in
exchange for Registered Securities.

          If Debt Securities of any series are issuable as both Registered
Securities and Bearer Securities then, at the option of the Holder and upon
request conferred in writing, Registered Securities or Bearer Securities of any
series may be issued in exchange for Bearer Securities (except as otherwise
specified as contemplated by Section 3.1 with respect to a Bearer Security in
global form) of the same series, of any authorized denominations and of like
tenor and terms, aggregate principal amount and of a like Stated Maturity, upon
surrender of the Bearer Securities to be exchanged at any such office or agency,
with all unmatured coupons and all matured coupons in default thereto
appertaining. If the Holder of a Bearer Security is unable to produce any such
unmatured coupon or coupons or matured coupon or coupons in default, such
exchange may be effected if the Bearer Securities are accompanied by payment in
funds acceptable to the Company and the Trustee in an amount equal to the face
amount of such missing coupon or coupons, or the surrender of such missing
coupon or coupons may be waived by the Company and the Trustee if there be
furnished to them such security or indemnity as they may require to save each of
them and any Paying Agent harmless. If thereafter the Holder of such Security
shall surrender to any Paying Agent any such missing coupon in respect of which
such a payment shall have been made, such Holder shall be entitled to receive
the amount of such payment; provided, however, that, except as otherwise
provided in Section 10.2, interest represented by coupons shall be payable only
upon presentation and surrender of those coupons at an office or agency located
outside the United States. Notwithstanding the foregoing, in case a Bearer
Security of any series is surrendered at any such office or agency in exchange
for a Registered Security of the same series and like tenor and terms after the
close of business at such office or agency of (i) any Regular Record Date and
before the opening of business at such office or agency on the relevant Interest
Payment Date, or (ii) any Special Record Date and before the opening of business
at such office or agency on the related date for payment of Defaulted Interest,
such Bearer Security shall be surrendered without the coupon relating to such
Interest Payment Date or proposed date of payment, as the case may be and
interest will not be payable in


                                      -25-
<PAGE>   34
respect of the Registered Security issued in exchange for such Bearer Security
but will be payable only to the Holder of such coupon when due in accordance
with the terms of this Indenture. The Company shall execute, and the Trustee
shall authenticate and make available for delivery, the Registered Security or
Securities which the Holder making the exchange is entitled to receive.

          Whenever any Debt Securities are so surrendered for exchange, the
Company shall execute, and the Trustee shall authenticate and deliver, the Debt
Securities which the Holder making the exchange is entitled to receive.

          If at any time the Depositary for the Debt Securities of a series
notifies the Company that it is unwilling or unable to continue as Depositary
for the Debt Securities of such series or if at any time the Depositary for the
Debt Securities of such series shall no longer be eligible under Section 3.3(h),
the Company shall appoint a successor Depositary with respect to the Debt
Securities of such series. If a successor Depositary for the Debt Securities of
such series is not appointed by the Company within 90 days after the Company
receives such notice or becomes aware of such ineligibility, the Company's
election pursuant to Section 3.1(9) shall no longer be effective with respect to
the Debt Securities of such series and the Company will execute, and the
Trustee, upon receipt of a Company Order for the authentication and delivery of
definitive Debt Securities of such series, will authenticate and deliver, Debt
Securities of such series in definitive form in an aggregate principal amount
equal to the principal amount of the Global Security or Securities representing
such series in exchange for such Global Security or Securities.

          The Company may at any time and in its sole discretion determine that
the Debt Securities of any series issued in the form of one or more Global
Securities shall no longer be represented by such Global Security or Securities.
In such event the Company will execute, and the Trustee, upon receipt of a
Company Order for the authentication and delivery of definitive Debt Securities
of such series, will authenticate and deliver, Debt Securities of such series in
definitive form and in an aggregate principal amount equal to the principal
amount of the Global Security or Securities representing such series in exchange
for such Global Security or Securities.

          If specified by the Company pursuant to Section 3.1 with respect to a
series of Debt Securities, the Depositary for such series of Debt Securities may
surrender a Global Security for such series of Debt Securities in exchange in
whole or in part for Debt Securities of such series of like tenor and terms and
in definitive form on such terms as are acceptable to the Company and such
Depositary. Thereupon, the Company shall execute, and the Trustee shall
authenticate and deliver, without charge to any Holder,

          (a) to each Person specified by such Depositary a new Debt Security or
     Securities of the same series, of like tenor and terms and of any
     authorized denominations as requested by such person in aggregate principal
     amount equal to and in exchange for such Person's beneficial interest in
     the Global Security; and

          (b) to such Depositary a new Global Security of like tenor and terms
     and in a denomination equal to the difference, if any, between the
     principal amount of the surren-


                                      -26-
<PAGE>   35
     dered Global Security and the aggregate principal amount of Debt Securities
     delivered to Holders thereof.

          In any exchange provided for in any of the preceding three paragraphs,
the Company will execute and the Trustee will authenticate and deliver Debt
Securities (a) in definitive registered form in authorized denominations, if
the Debt Securities of such series are issuable as Registered Securities, (b) in
definitive bearer form in authorized denominations, with coupons attached, if
the Debt Securities of such series are issuable as Bearer Securities or (c) as
either Registered or Bearer Securities, as shall be specified by the beneficial
owner thereof, if the Debt Securities of such series are issuable in either
form; provided, however, that no definitive Bearer Security shall be delivered
in exchange for a temporary Global Security unless the Company or its agent
shall have received from the person entitled to receive the definitive Bearer
Security a certificate substantially in the form set forth in Exhibit A-1 and,
if applicable, A-2 hereto; and provided further that delivery of a Bearer
Security shall occur only outside the United States; and provided further that
no definitive Bearer Security will be issued if the Company has reason to know
that any such certificate is false.

          Upon the exchange of a Global Security for Debt Securities in
definitive form, such Global Security shall be can celled by the Trustee.
Registered Securities issued in exchange for a Global Security pursuant to this
Section shall be registered in such names and in such authorized denominations
as the Depositary for such Global Security, pursuant to instructions from its
direct or indirect participants or otherwise, shall instruct the Trustee. The
Trustee shall deliver such Registered Securities to the persons in whose names
such Debt Securities are so registered. The Trustee shall deliver Bearer
Securities issued in exchange for a Global Security pursuant to this Section to
the persons, and in such authorized denominations, as the Depositary for such
Global Security, pursuant to instructions from its direct or indirect
participants or otherwise, shall instruct the Trustee; provided, however, that
no definitive Bearer Security shall be delivered in exchange for a temporary
Global Security unless the Company or its agent shall have received from the
person entitled to receive the definitive Bearer Security a certificate
substantially in the form set forth in Exhibit A-1 and, if applicable, A-2
hereto; and provided further that delivery of a Bearer Security shall occur only
outside the United States; and provided further that no definitive Bearer
Security will be issued if the Company has reason to know that any such
certificate is false.

          All Debt Securities issued upon any registration of transfer or
exchange of Debt Securities shall be the valid obligations of the Company,
evidencing the same debt, and entitled to the same benefits under this
Indenture, as the Debt Securities surrendered upon such registration of transfer
or exchange.

          Every Registered Security presented or surrendered for registration of
transfer or for exchange shall (if so required by the Company, the Security
Registrar or the Trustee) be duly endorsed, or be accompanied by a written
instrument of transfer in form satisfactory to the Company, the Security
Registrar and the Trustee duly executed, by the Holder thereof or such Holder's
attorney duly authorized in writing.


                                      -27-
<PAGE>   36
          No service charge shall be made for any registration of transfer or
exchange of Debt Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any transfer, registration of transfer or exchange of Debt
Securities, other than exchanges expressly provided in this Indenture to be
made at the Company's own expense or without expense or without charge to the
Holders.

          The Company shall not be required (i) to issue, register the transfer
of or exchange Debt Securities of any particular series to be redeemed for a
period of fifteen days preceding the first publication of the relevant notice
of redemption or, if Registered Securities are outstanding and there is no
publication, the mailing of the relevant notice of redemption of Debt Securities
of such series selected for redemption under Section 11.3 and ending at the
close of business on the day of such mailing, or (ii) to register the transfer
of or exchange any Registered Security so selected for redemption in whole or in
part, except the unredeemed portion of such Registered Security being redeemed
in part, or (iii) to exchange any Bearer Security so selected for redemption
except that such a Bearer Security may be exchanged for a Registered Security of
like tenor and terms of that series, provided that such Registered Security
shall be simultaneously surrendered for redemption.

          Notwithstanding anything herein to the contrary, the exchange of
Bearer Securities into Registered Securities shall be subject to applicable laws
and regulations in effect at the time of exchange; neither the Company, the
Trustee nor the Security Registrar shall exchange any Bearer Securities into
Registered Securities if it has received an Opinion of Counsel that as a result
of such exchanges the Company would suffer adverse consequences under the United
States Federal income tax laws and regulations then in effect and the Company
has delivered to the Trustee a Company Order directing the Trustee not to make
such exchanges thereafter unless and until the Trustee receives a subsequent
Company Order to the contrary. The Company shall deliver copies of such Company
Orders to the Security Registrar.

          SECTION 3.6. Mutilated, Destroyed, Lost and Stolen Debt Securities.

          If (i) any mutilated Debt Security or a Bearer Security with a
mutilated coupon appertaining to it is surrendered to a Paying Agent outside the
United States designated by the Company, or, in the case of any Registered
Security, to the Trustee, or (ii) the Company and the Trustee receive evidence
to their satisfaction of the destruction, loss or theft of any Debt Security or
coupon, and there is delivered to the Company and the Trustee such security or
indemnity as may be required by them to save each of them harmless, then, in the
absence of notice to the Company and the Trustee that such Debt Security or
coupon has been acquired by a bona fide purchaser, the Company shall execute and
upon its written request the Trustee shall authenticate and deliver, in exchange
for any such mutilated Debt Security or Bearer Security with a mutilated coupon
appertaining to it or to which a destroyed, lost or stolen coupon appertains
(with all appurtenant coupons not destroyed, lost or stolen) or in lieu of any
such destroyed, lost or stolen Debt Security, a new Debt Security of like tenor
and terms and principal amount, bearing a number not contemporaneously
outstanding, with coupons corresponding to the coupon, if any, appertaining to
such destroyed, lost or stolen Debt Security or to the Debt Security to which
such


                                      -28-
<PAGE>   37
destroyed, lost or stolen coupon appertains; provided, however, that any such
new Bearer Security will be delivered only in compliance with the conditions set
forth in Section 3.5.

          In case any such mutilated, destroyed, lost or stolen Debt Security or
coupon has become or is about to become due and payable, the Company in its
discretion may, instead of issuing a new Debt Security, pay such Debt Security
or coupon; provided, however, that payment of principal of (and premium, if any)
and any interest on Bearer Securities shall, except as otherwise provided in
Section 10.2, be payable only at an office or agency located outside the United
States; and provided, further, that, with respect to any such coupons, interest
represented thereby (but not any additional amounts payable as provided in
Section 10.6), shall be payable only upon presentation and surrender of the
coupons appertaining thereto.

          Upon the issuance of any new Debt Security or coupons under this
Section, the Company may require the payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in relation thereto and any
other expenses (including the fees and expenses of the Trustee and printing
expenses) connected therewith.

          Every new Debt Security of any series, with its coupons, if any,
issued pursuant to this Section in lieu of any destroyed, lost or stolen Debt
Security, or in exchange for a Bearer Security to which a destroyed, lost or
stolen coupon appertains, shall constitute an original additional contractual
obligation of the Company, whether or not the destroyed, lost or stolen Debt
Security and its coupons, if any, or the destroyed, lost or stolen coupon shall
be at any time enforceable by anyone, and any such new Debt Security and
coupons, if any, shall be entitled to all the benefits of this Indenture equally
and proportionately with any and all other Debt Securities of that series and
their coupons, if any, duly issued hereunder.

          The provisions of this Section are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Debt Securities or coupons.

          SECTION 3.7. Payment of Interest; Interest Rights Preserved.

          Except as otherwise provided pursuant to Section 3.1, interest on any
Registered Security which is payable, and is punctually paid or duly provided
for, on any Interest Payment Date shall be paid to the Person in whose name that
Registered Security (or one or more Predecessor Securities) is registered at the
close of business on the Regular Record Date for such interest. In case a Bearer
Security of any series is surrendered in exchange for a Registered Security of
such series after the close of business (at an office or agency in a Place of
Payment for such series) on any Regular Record Date and before the opening of
business (at such office or agency) on the next succeeding Interest Payment
Date, such Bearer Security shall be surrendered without the coupon relating to
such Interest Payment Date and interest will not be payable on such Interest
Payment Date in respect of the Registered Security issued in exchange for such
Bearer Security, but will be payable only to the Holder of such coupon when due
in accordance with the provisions of this Indenture. At the option of the
Company, payment of interest on any Registered Security may be made by check in
the currency designated for such payment pursuant to the terms of such
Registered Security mailed to the address of the Person entitled thereto as such


                                      -29-
<PAGE>   38
address shall appear in the Security Register or by wire transfer to an account
in such currency designated by such Person in writing not later than ten days
prior to the date of such payment.

          Any interest on any Registered Security of any series which is
payable, but is not punctually paid or duly provided for, on any Interest
Payment Date (herein called "Defaulted Interest") shall forthwith cease to be
payable to the registered Holder on the relevant Regular Record Date by virtue
of his having been such Holder, and such Defaulted Interest may be paid by the
Company, at its election in each case, as provided in Clause (1) or (2) below:

          (1) The Company may elect to make payment of any Defaulted Interest to
     the Persons in whose names the Registered Securities of such series (or
     their respective Predecessor Securities) are registered at the close of
     business on a Special Record Date for the payment of such Defaulted
     Interest, which shall be fixed in the following manner. The Company shall
     notify the Trustee in writing of the amount of Defaulted Interest proposed
     to be paid on each Registered Security of such series and the date of the
     proposed payment, and at the same time the Company shall deposit with the
     Trustee an amount of money and/or, to the extent such Debt Securities are
     denominated and payable in Dollars only, Eligible Instruments the payments
     of principal and interest on which when due (and without reinvestment and
     providing no tax liability will be imposed upon the Trustee or the Holder
     of such Registered Securities) will provide money in such amounts as will
     (together with any money irrevocably deposited in trust with the Trustee,
     without investment) be equal to the aggregate amount proposed to be paid in
     respect of such Defaulted Interest or shall make arrangements satisfactory
     to the Trustee for such deposit prior to the date of the proposed payment,
     such money and/or Eligible Instruments when deposited to be held in trust
     for the benefit of the Persons entitled to such Defaulted Interest as in
     this Clause provided. Thereupon the Trustee shall fix a Special Record Date
     for the payment of such Defaulted Inter est which shall be not more than 15
     days and not less than 10 days prior to the date of the proposed payment
     and not less than 10 days after the receipt by the Trustee of the notice of
     the proposed payment. The Trustee shall promptly notify the Company of such
     Special Record Date. Unless the Trustee is acting as the Security
     Registrar, promptly after such Special Record Date, the Company shall
     furnish the Trustee with a list, or shall make arrangements satisfactory to
     the Trustee with respect thereto, of the names and addresses of, and
     principal amounts of Registered Securities of such series held by, the
     Holders appearing on the Security Register at the close of business on such
     Special Record Date. In the name and at the expense of the Company, the
     Trustee shall cause notice of the proposed payment of such Defaulted
     Interest and the Special Record Date therefor to be mailed, first-class
     postage prepaid, to each Holder of Registered Securities of such series at
     his address as it appears in the Security Register, not less than 10 days
     prior to such Special Record Date. Notice of the proposed payment of such
     Defaulted Interest and the Special Record Date therefor having been mailed
     as aforesaid, such Defaulted Interest shall be paid to the Persons in whose
     names the Registered Securities of such series (or their respective
     Predecessor Securities) are registered at the close of business on such
     Special Record Date and shall no longer be payable pursuant to the
     following Clause (2). In case a Bearer Security of any series is
     surrendered at the office or agency in a Place of Payment for such series
     in exchange for a Registered


                                      -30-
<PAGE>   39
     Security of such series after the close of business at such office or
     agency on any Special Record Date and before the opening of business at
     such office or agency on the related proposed date for payment of Defaulted
     Interest, such Bearer Security shall be surrendered without the coupon
     relating to such proposed date of payment and Defaulted Interest will not
     be payable on such proposed date of payment in respect of the Registered
     Security issued in exchange for such Bearer Security, but will be payable
     only to the Holder of such coupon when due in accordance with the
     provisions of this Indenture.

          (2) The Company may make payment of any Defaulted Interest on the
     Registered Securities of any series in any other lawful manner not
     inconsistent with the requirements of any securities exchange on which the
     Registered Securities may be listed, and upon such notice as maybe required
     by such exchange, if, after notice given by the Company to the Trustee of
     the proposed payment pursuant to this Clause, such manner of payment shall
     be deemed practicable by the Trustee.

          Subject to the foregoing provisions of this Section, each Debt
Security delivered under this Indenture upon registration of transfer of or in
exchange for or in lieu of any other Debt Security shall carry the rights to
interest accrued and unpaid, and to accrue, which were carried by such other
Debt Security.

          Subject to the limitations set forth in Section 10.2, the Holder of
any coupon appertaining to a Bearer Security shall be entitled to receive the
interest payable on such coupon upon presentation and surrender of such coupon
on or after the Interest Payment Date of such coupon at an office or agency
maintained for such purpose pursuant to Section 10.2.

          SECTION 3.8. Persons Deemed Owners.

          Prior to due presentment of a Registered Security for registration of
transfer, the Company, the Trustee and any agent of the Company or of the
Trustee may treat the Person in whose name such Registered Security is
registered as the owner of such Registered Security for the purpose of receiving
payment of principal of (and premium, if any) and (subject to Section 3.7)
interest on such Registered Security and for all other purposes whatsoever,
whether or not such Registered Security be overdue, and neither the Company, the
Trustee nor any agent of the Company or the Trustee shall be affected by notice
to the contrary.

          The Company, the Trustee and any agent of the Company or the Trustee
may treat the bearer of any Bearer Security and the bearer of any coupon as the
absolute owner of such Bearer Security or coupon for the purpose of receiving
payment thereof or on account thereof and for all other purposes whatsoever,
whether or not such Bearer Security or coupon be overdue, and neither the
Company, the Trustee nor any agent of the Company or the Trustee shall be
affected by notice to the contrary.

          None of the Company, the Trustee, any Paying Agent or the Security
Registrar will have any responsibility or liability for any aspect of the
records relating to or payments made on account of beneficial ownership
interests of a Global Security or for maintaining, supervising or reviewing any
records relating to such beneficial ownership interests.


                                      -31-
<PAGE>   40
          SECTION 3.9. Cancellation.

          Unless otherwise provided with respect to a series of Debt Securities,
all Debt Securities and coupons surrendered for payment, redemption, repayment,
transfer, exchange or credit against any sinking fund payment pursuant to this
Indenture, shall, if surrendered to the Company or any agent of the Company, be
delivered to the Trustee and shall be promptly cancelled by it. The Company may
at any time deliver to the Trustee for cancellation any Debt Securities
previously authenticated and delivered hereunder which the Company may have
acquired in any manner whatsoever, and all Debt Securities so delivered shall be
promptly cancelled by the Trustee. No Debt Securities shall be authenticated in
lieu of or in exchange for any Debt Securities cancelled as provided in this
Section, except as expressly permitted by this Indenture. All cancelled Debt
Securities and coupons held by the Trustee shall be destroyed and certification
of their destruction delivered to the Company unless by a Company Order the
Company shall direct that the cancelled Debt Securities or coupons be returned
to it.

          SECTION 3.10. Computation of Interest.

          Except as otherwise specified as contemplated by Section 3.1 for Debt
Securities of any series, interest on the Debt Securities of each series shall
be computed on the basis of a 360-day year of twelve 30-day months.

          SECTION 3.11. Certification by a Person Entitled to Delivery of a
Bearer Security.

          Whenever any provision of this Indenture or a Debt Security
contemplates that certification by given by a Person entitled to delivery of a
Bearer Security, such certification shall be provided substantially in the form
of Exhibit A-1 and, if applicable, A-2 hereto, with only such changes as shall
be approved by the Company and consented to by the Trustee whose consent shall
not unreasonably be withheld.

          SECTION 3.12. Judgments.

          The Company may provide, pursuant to Section 3.1, for the Debt
Securities of any series that, to the fullest extent possible under applicable
law and except as may otherwise be specified as contemplated in Section 3.1, (a)
the obligation, if any, of the Company to pay the principal of (and premium, if
any) and interest on the Debt Securities of any series and any appurtenant
coupons in a Foreign Currency, composite currency or Dollars (the "Designated
Currency") as may be specified pursuant to Section 3.1 is of the essence and
agrees that judgments in respect of such Debt Securities shall be given in the
Designated Currency; (b) the obligation of the Company to make payments in the
Designated Currency of the principal of (and premium, if any) and interest on
such Debt Securities and any appurtenant coupons shall, notwithstanding any
payment in any other currency (whether pursuant to a judgment or otherwise), be
discharged only to the extent of the amount in the Designated Currency that the
Holder receiving such payment may, in accordance with normal banking procedures,
purchase with the sum paid in such other currency (after any premium and cost of
exchange) in the country of issue of the Designated Currency in the case of
Foreign Currency or Dollars or in the international banking com-


                                      -32-
<PAGE>   41
munity in the case of a composite currency on the Business Day immediately
following the day on which such Holder receives such payment; (c) if the amount
in the Designated Currency that may be so purchased for any reason falls short
of the amount originally due, the Company shall pay such additional amounts as
may be necessary to compensate for such shortfall; and (d) any obligation of the
Company not discharged by such payment shall be due as a separate and
independent obligation and, until discharged as provided herein, shall continue
in full force and effect.

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE


              SECTION 4.1. Satisfaction and Discharge of Indenture.

          This Indenture shall upon Company Request cease to be of further
effect (except as to any surviving rights of registration of transfer or
exchange of Debt Securities herein expressly provided for and rights to receive
payments of principal and interest thereon and any right to receive additional
amounts, as provided in Section 10.6) and the Trustee, at the expense of the
Company, shall execute proper instruments acknowledging satisfaction and
discharge of this Indenture when

          (1) either

               (A) all Debt Securities theretofore authenticated and delivered
          and all coupons appertaining thereto (other than (i) coupons
          appertaining to Bearer Securities surrendered in exchange for
          Registered Securities and maturing after such exchange, surrender of
          which is not required or has been waived as provided in Section 3.5,
          (ii) Debt Securities and coupons which have been destroyed, lost or
          stolen and which have been replaced or paid as provided in Section
          3.6, (iii) coupons appertaining to Bearer Securities called for
          redemption or surrendered for repayment and maturing after the
          relevant Redemption Date or Repayment Date, as appropriate, surrender
          of which has been waived as provided in Section 11.6 or 13.3 and (iv)
          Debt Securities and coupons for whose payment money and/or Eligible
          Instruments have theretofore been deposited in trust or segregated and
          held in trust by the Company and thereafter repaid to the Company or
          discharged from such trust, as provided in Section 10.3) have been
          delivered to the Trustee cancelled or for cancellation; or

               (B) all such Debt Securities not theretofore delivered to the
          Trustee for cancellation

          (i) have become due and payable, or

          (ii) will become due and payable at their Stated Maturity within one
     year, or


                                      -33-
<PAGE>   42
          (iii) are to be called for redemption within one year under
     arrangements satisfactory to the Trustee for the giving of notice by the
     Trustee in the name, and at the expense, of the Company.

and the Company, in the case of (B)(i), (B)(ii) or (B)(iii) above, has
irrevocably deposited or caused to be deposited with the Trustee as trust funds
in trust for the purpose money and/or, to the extent such Debt Securities are
denominated and payable in Dollars only, Eligible Instruments the payments of
principal and interest on which when due (and without reinvestment and providing
no tax liability will be imposed upon the Trustee or the Holders of Debt
Securities) will provide money in such amounts as will (together with any money
irrevocably deposited in trust with the Trustee, without investment) be
sufficient to pay and discharge the entire indebtedness on such Debt Securities
and coupons of such series for principal (and premium, if any) and interest, and
any mandatory sinking fund, repayment or analogous payments thereon, on the
scheduled due dates therefor to the date of such deposit (in the case of Debt
Securities and coupons which have become due and payable) or to the Stated
Maturity or Redemption Date, if any, and all Repayment Dates (in the case of
Debt Securities repayable at the option of the Holders thereof); provided,
however, that in the event a petition for relief under the Bankruptcy Reform Act
of 1978 or a successor statute is filed with respect to the Company within 91
days after the deposit, the obligations of the Company under the Indenture with
respect to the Debt Securities of such series shall not be deemed terminated or
discharged, and in such event the Trustee shall be required to return the
deposited money and Eligible Instruments to the Company.

          (2) the Company has paid or caused to be paid all other sums payable
     hereunder by the Company

          (3) the Company has delivered to the Trustee an Officers' Certificate
     and an Opinion of Counsel each stating that all conditions precedent herein
     provided for relating to the satisfaction and discharge of this Indenture
     have been complied with, and

          (4) in the case of a deposit and discharge pursuant to subclause (B)
     of clause (1) of this Section the Company has delivered to the Trustee an
     Opinion of Counsel to the effect that the Company has received from or
     there has been published by the Internal Revenue Service a ruling to the
     effect that Holders of the Debt Securities of the series will not recognize
     income, gain or loss for U.S. Federal income tax purposes as a result of
     such deposit and discharge.

Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 6.7 and, if money or
Eligible Instruments shall have been deposited with the Trustee pursuant to
Subclause (B) of Clause (1) of this Section, the obligations of the Trustee
under Section 4.2 and the last paragraph of Section 10.3 shall survive.

          SECTION 4.2. Application of Trust Money and Eligible Instruments.

          Subject to the provisions of the last paragraph of Section 10.3, all
money and Eligible Instruments deposited with the Trustee pursuant to Section
4.1, 4.3 or 15.1 shall be held in trust and such money and the principal and
interest received on such Eligible Instruments shall


                                      -34-
<PAGE>   43
be applied by it, in accordance with the provisions of the Debt Securities, the
coupons and this Indenture, to the payment, either directly or through any
Paying Agent (including the Company acting as its own Paying Agent) as the
Trustee may determine, to the Persons entitled thereto, of the principal (and
premium, if any) and interest for whose payment such money or Eligible
Instruments have been deposited with the Trustee.

          SECTION 4.3. Satisfaction, Discharge and Defeasance of Debt Securities
of any Series.

          If this Section 4.3 is specified, as contemplated by Section 3.1, to
be applicable to Debt Securities of any series, then, notwithstanding Section
4.1, (i) the Company shall be deemed to have paid and discharged the entire
indebtedness on all the Outstanding Debt Securities of any such series and
related coupons; (ii) the provisions of this Indenture as it relates to such
Outstanding Debt Securities and related coupons shall no longer be in effect
(except as to the rights of Holders of Debt Securities to receive, from the
trust fund described in subparagraph (1) below, payment of (x) the principal of
(and premium, if any) and any installment of principal of (and premium, if any)
or interest on such Debt Securities and related coupons on the Stated Maturity
of such principal (and premium, if any) or installment of principal (and
premium, if any) or interest or (y) any mandatory sinking fund payments or
analogous payments applicable to the Debt Securities of that series on that day
on which such payments are due and payable in accordance with the terms of this
Indenture and of such Debt Securities, the Company's obligations with respect to
such Debt Securities under Sections 3.4, 3.5, 3.6, 10.2, 10.3 and 10.6 and the
rights, powers, trusts, duties and immunities of the Trustee hereunder,
including those under Section 6.7 hereof); and (iii) the Trustee, at the expense
of the Company, shall, upon Company Order, execute proper instruments
acknowledging satisfaction and discharge of such indebtedness, when

          (1) either

               (A) with respect to all Outstanding Debt Securities of such
          series and related coupons, with reference to this Section 4.3, the
          Company has deposited or caused to be deposited with the Trustee
          irrevocably, as trust funds in trust, money and/or, to the extent such
          Debt Securities are denominated and payable in Dollars only, Eligible
          Instruments the payments of principal and interest on which when due
          (and without reinvestment and providing no tax liability will be
          imposed upon the Trustee or the Holders of such Debt Securities) will
          provide money in such amounts as will (together with any money
          irrevocably deposited in trust with the Trustee, without investment)
          be sufficient to pay and discharge (i) the principal of (and premium,
          if any) and interest on the Outstanding Debt Securities of that series
          and related coupons on the Stated Maturity of such principal or inter
          est and (ii) any mandatory sinking fund payments or analogous payments
          applicable to Debt Securities of such series on the date on which such
          payments are due and payable in accordance with the terms of this
          Indenture and of such Debt Securities; or


                                      -35-
<PAGE>   44
               (B) the Company has properly fulfilled such other means of
          satisfaction and discharge as is specified, as contemplated by Section
          3.1, to be applicable to the Debt Securities of such series;

          (2) the Company has paid or caused to be paid all sums payable with
     respect to the Outstanding Debt Securities of such series and related
     coupons;

          (3) such deposit will not result in a breach of, or constitute a
     default under, this Indenture or any other agreement or instrument to which
     the Company is a party or by which it is bound;

          (4) no Event of Default or event which with the giving of notice or
     lapse of time, or both, would become an Event of Default with respect to
     the Debt Securities of such series shall have occurred and be continuing on
     the date of such deposit and no Event of Default under Section 5.1(6) or
     Section 5.1(7) or event which with the giving of notice or lapse of time,
     or both, would become an Event of Default under Section 5.1(6) or Section
     5.1(7) shall have occurred and be continuing on the 91st day after such
     date;

          (5) the Company has delivered to the Trustee an Opinion of Counsel to
     the effect that (a) the Company has received from, or there has been
     published by, the Internal Revenue Service a ruling, or (b) since the date
     of this Indenture there has been a change in applicable Federal income tax
     law, in either case to the effect that, and based thereon such Opinion of
     Counsel shall confirm that, the Holders of Debt Securities and related
     coupons of such series will not recognize income, gain or loss for Federal
     income tax purposes as a result of such deposit, defeasance and discharge
     and will be subject to Federal income tax on the same amount and in the
     same manner and at the same times as would have been the case if such
     deposit, defeasance and discharge had not occurred;

          (6) if the Debt Securities of that series are then listed on any
     domestic or foreign securities exchange, the Company shall have delivered
     to the Trustee an Opinion of Counsel to the effect that such deposit,
     defeasance and discharge will not cause such Debt Securities to be
     delisted; and

          (7) the Company has delivered to the Trustee an Officers' Certificate
     and an Opinion of Counsel, each stating that all conditions precedent
     herein provided for relating to the satisfaction and discharge of the
     entire indebtedness of all Outstanding Debt Securities and related coupons
     have been complied with.

          Any deposits with the Trustee referred to in Section 4.3(1)(A) above
shall be irrevocable and shall be made under the terms of an escrow trust
agreement in form and substance satisfactory to the Trustee. If any Outstanding
Debt Securities of such series are to be redeemed prior to their Stated
Maturity, whether pursuant to any optional redemption provisions or in
accordance with any mandatory sinking fund requirement, the applicable escrow or
trust agreement shall provide therefor and the Company shall make such
arrangements as are satisfactory to the Trustee for the giving of notice of
redemption by the Trustee in the name, and at the expense, of the Company.


                                      -36-
<PAGE>   45
          Upon the satisfaction of the conditions set forth in this Section 4.3
with respect to all the Outstanding Debt Securities of any series, the terms
and conditions of such series, including the terms and conditions with respect
thereto set forth in this Indenture, shall no longer be binding upon, or
applicable to, the Company; provided that the Company shall not be discharged
from any payment obligations in respect of Debt Securities of such series which
are deemed not to be Outstanding under clause (iii) of the definition thereof if
such obligations continue to be valid obligations of the Company under
applicable law.

          Notwithstanding the cessation, termination and discharge of all
obligations, covenants and agreements (except as provided above in this Section
4.3) of the Company under this Indenture with respect to any series of Debt
Securities, the obligations of the Company to the Trustee under Section 6.7, and
the obligations of the Trustee under Section 4.2 and the last paragraph of
Section 10.3, shall survive with respect to such series of Debt Securities.

                                  ARTICLE FIVE

                                    REMEDIES


          SECTION 5.1. Events of Default.

          "Event of Default", wherever used herein with respect to Debt
Securities of any series, means any one of the following events (whatever the
reason for such Event of Default and whether it shall be voluntary or
involuntary or be effected by operation of law, pursuant to any judgment, decree
or order of any court or any order, rule or regulation of any administrative or
governmental body):

          (1) [default in the payment of principal of or premium, if any, on any
     Debt of such series Security when due; or]

          (2) [default for 30 days in the payment of interest, if any, on the
     Debt Security of such series or related coupon, if any, when due; or]

          (3) default in the deposit of any sinking fund payment, when and as
     due by the terms of a Debt Security of such series; or

          (4) default in the performance, or breach, of any covenant or warranty
     of the Company in this Indenture (other than a covenant or warranty a
     default in whose performance or whose breach is elsewhere in this Section
     specifically dealt with or which has expressly been included in this
     Indenture solely for the benefit of Debt Securities of a series other than
     such series), and continuance of such default or breach for a period of 30
     days after there as been given by registered or certified mail, to the
     Company by the Trustee, or to the Company and the Trustee by the Holders of
     at least 25% in principal amount of the Outstanding Debt Securities of such
     series, a written notice specifying such default or breach and requiring it
     to be remedied and stating that such notice is a "Notice of Default"
     hereunder; or


                                      -37-
<PAGE>   46
          (5) the failure of the Company, subject to the provisions of Section
     10.8, to observe and perform the covenants contained in Section 10.5; or

          (6) the entry by a court having jurisdiction in the premises of (A) a
     decree or order for relief in respect of the Company in an involuntary case
     or proceeding under any applicable Federal or state bankruptcy, insolvency,
     reorganization or other similar law or (B) a decree or order adjudging the
     Company a bankrupt or insolvent, or approving as properly filed a petition
     seeking reorganization, arrangement, adjustment or composition of or in
     respect of the Company under any applicable Federal or State law, or
     appointing a custodian, receiver, liquidator, assignee, trustee,
     sequestrator or other similar official of the Company or of any substantial
     part of its property, or ordering the winding up or liquidation of its
     affairs, and the continuance of any such decree or order for relief or any
     such other decree or order unstayed and in effect for a period of 60
     consecutive days; or

          (7) the commencement by the Company of a voluntary case or proceeding
     under any applicable Federal or state bankruptcy, insolvency,
     reorganization or other similar law or of any other case or proceeding to
     be adjudicated a bankrupt or insolvent, or the consent by it to the entry
     of a decree or order for relief in respect of the Company in an involuntary
     case or proceeding under any applicable Federal or state bankruptcy,
     insolvency, reorganization or other similar law or to the commencement of
     any bankruptcy or insolvency case or proceeding against it, or the filing
     by it of a petition or answer or consent seeking reorganization or relief
     under any applicable Federal or State law, or the consent by it to the
     filing of such petition or to the appointment of or taking possession by a
     custodian, receiver, liquidator, assignee, trustee, sequestrator or similar
     official of the Company or of any substantial part of its property, or the
     making by it of an assignment for the benefit of creditors, or the
     admission by it in writing of its inability to pay its debts generally as
     they become due, or the taking of corporate action by the Company in
     furtherance of any such action; or

          (8) any other Event of Default, if any, provided with respect to Debt
     Securities of such series specified as contemplated by Section 3.1.

          SECTION 5.2. Acceleration of Maturity; Rescission and Annulment.

          If an Event of Default with respect to Debt Securities of any series
at the time Outstanding occurs and its continuing, then and in every such case
the Trustee or the Holders of not less than 25% in principal amount of
Outstanding Debt Securities of such series may declare the principal amount (or,
if the Debt Securities of such series are Original Issue Discount Securities,
such portion of the principal amount as may be specified in the terms of such
series) of and all accrued but unpaid interest on all the Debt Securities of
such series to be due and payable immediately, by a notice in writing to the
Company (and to the Trustee if given by such Holders), and upon any such
declaration such principal amount (or specified amount) shall become immediately
due and payable.

          At any time after such a declaration of acceleration with respect to
Debt Securities of any series has been made and before a judgment or decree for
payment of the money due has


                                      -38-
<PAGE>   47
been obtained by the Trustee as hereinafter in this Article provided, the
Holders of a majority in principal amount of the Outstanding Debt Securities of
such series, by written notice to the Company and the Trustee, may rescind and
annul such declaration and its consequences if

          (1) the Company has paid or deposited with the Trustee a sum
     sufficient to pay

               (A) all overdue installments of interest on all Debt Securities
          of such series and any related coupons,

               (B) the principal of (and premium, if any, on) any Debt
          Securities of such series which have become due otherwise than by such
          declaration of acceleration and interest thereon at the rate or rates
          prescribed therefor in such Debt Securities,

               (C) to the extent that payment of such interest is lawful,
          interest upon overdue installments of interest on each Debt Security
          and any related coupons at the rate or rates prescribed therefor in
          such Debt Securities, and

               (D) all sums paid or advanced by the Trustee hereunder and the
          reasonable compensation, expense, disbursements and advances of the
          Trustee, its agents and counsel;

          and

          (2) all Events of Default with respect to Debt Securities of such
     series, other than the non-payment of the principal of Debt Securities of
     such series which have become due solely by such declaration of
     acceleration, have been cured or waived as provided in Section 5.13.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

          SECTION 5.3. Collection of Indebtedness and Suits for Enforcement by
Trustee.

The Company covenants that if:

          (1) default is made in the payment of any installment of interest on
     any Debt Security or any related coupon when such interest becomes due and
     payable and such default continues for a period of 30 days,

          (2) default is made in the payment of the principal of (or premium, if
     any, on) any Debt Security at the Maturity thereof, or

          (3) default is made on any sinking fund payment or analogous
     obligation when the same becomes due pursuant to the terms of the Debt
     Securities or any series,


                                      -39-
<PAGE>   48
the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Debt Securities and coupons, the amount then due and payable on
such Debt Securities and coupons for principal (and premium, if any) and
interest and, to the extent that payment of such interest shall be legally
enforceable, interest upon the overdue principal (and premium, if any) and, upon
overdue installments of interest, at the rate or rates prescribed therefor in
such Debt Securities, and, in addition thereto, such further amount as shall be
sufficient to cover the costs and expenses of collection, including the
reasonable compensation, expenses, disbursements and advances of the Trustee,
its agents and counsel.

          If the Company fails to pay such amounts forthwith upon such demand,
the Trustee, in its own name and as trustee of an express trust, may institute a
judicial proceeding for the collection of the sums so due and unpaid, and may
prosecute such proceeding to judgment of final decree, and may enforce the same
against the Company or any other obligor upon such Debt Securities and coupons
and collect the moneys adjudged or decreed to be payable in the manner provided
by law out of the property of the Company or any other obligor upon such Debt
Securities and coupons, wherever situated.

          If a Default with respect to Debt Securities of any series occurs and
is continuing, the Trustee may in its discretion proceed to protect and enforce
its rights and the rights of the Holders of Debt Securities of such series and
any related coupons by such appropriate judicial proceedings as the Trustee
shall deem most effectual to protect and enforce any such rights, whether for
the specific enforcement of any covenant or agreement in this Indenture or in
aid of the exercise of any power granted herein, or to enforce any other proper
remedy.

          SECTION 5.4. Trustee May File Proofs of Claim.

          In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceedings, or any voluntary or involuntary case under the Federal
bankruptcy laws as now or hereafter constituted, relative to the Company or any
other obligor upon the Debt Securities of a particular series or any related
coupons or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal of such Debt
Securities shall then be due and payable as therein expressed or by declaration
or otherwise and irrespective of whether the Trustee shall have made any demand
on the Company for the payment of overdue principal or interest) shall be
entitled and empowered, by intervention in such proceedings or otherwise,

          (1) to file and prove a claim for the whole amount of principal (and
     premium, if any) and interest owing and unpaid in respect of the Debt
     Securities of such series and any appurtenant coupons, to file such other
     papers or documents as may be necessary or advisable and to take any and
     all other actions under the Trust Indenture Act in order to have the claims
     of the Trustee (including any claim for the reasonable compensation,
     expenses, disbursements and advances of the Trustee, its agents and
     counsel) and of the Holders allowed in such judicial proceeding, and

          (2) to collect and receive any moneys or other property payable or
     deliverable on any such claims and to distribute the same;


                                      -40-
<PAGE>   49
and any receiver, assignee, trustee, custodian, liquidator, sequestrator or
other similar official in any such proceeding is hereby authorized by each
Holder to make such payments to the Trustee, and in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay to
the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 6.7.

          Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the Debt
Securities or coupons or the rights of any Holder thereof, or to authorize the
Trustee to vote in respect of the claim of any Holder in any such proceeding.

          SECTION 5.5. Trustee May Enforce Claims without Possession of Debt
Securities or Coupons.

          All rights of action and claims under this Indenture or the Debt
Securities or coupons may be prosecuted and enforced by the Trustee without the
possession of any of the Debt Securities or coupons or the production thereof in
any proceeding relating thereto, and any such proceeding instituted by the
Trustee shall be brought in its own name, as trustee of an express trust, and
any recovery of judgment shall, after provision for the payment of the
reasonable compensation, expenses, disbursements and advances of the Trustee,
its agents and counsel, be for the ratable benefit of the Holders of the Debt
Securities and coupons in respect of which such judgment has been recovered.

          SECTION 5.6. Application of Money Collected.

          Any money collected by the Trustee pursuant to this Article shall be
applied in the following order, at the date or dates fixed by the Trustee and,
in case of the distribution of such money on account of principal (and premium,
if any) or interest, upon presentation of the Debt Securities or coupons, or
both, as the case may be, and the notation thereon of the payment if only
partially paid and upon surrender thereof if fully paid:

               FIRST: To the payment of all amounts due the Trustee under
          Section 6.7;

               SECOND: To the payment of the amounts then due and unpaid for
          principal of (and premium, if any) and interest on the Debt
          Securities and any coupons, in respect of which or for the benefit of
          which such money has been collected ratably, without preference or
          priority of any kind, according to the amounts due and payable on such
          Debt Securities and any coupons for principal (and premium, if any)
          and interest, respectively. The Holders of each series of Debt
          Securities denominated in Euros, any other composite currency or a
          Foreign Currency and any matured coupons relating thereto shall be
          entitled to receive a ratable portion of the amount determined by the
          Exchange Rate Agent by converting the principal amount Outstanding of
          such series of Debt Securities and matured but unpaid interest on such
          series of Debt Securities in the currency in which


                                      -41-
<PAGE>   50
          such series of Debt Securities is denominated into Dollars at the
          Exchange Rate as of the date of declaration of acceleration of the
          Maturity of the Debt Securities; and

               THIRD: The balance, if any, to the Person or Persons entitled
          thereto.

          SECTION 5.7. Limitation on Suits.

          No Holder of any Debt Securities of any series or any related coupons
shall have any right to institute any proceeding, judicial or otherwise, with
respect to this Indenture, or for the appointment of a receiver or trustee, or
for any other remedy hereunder, unless

          (1) such Holder has previously given written notice to the Trustee of
     a continuing Default with respect to the Debt Securities of such series;

          (2) the Holders of not less than 25% in principal amount of the
     Outstanding Debt Securities of such series shall have made written request
     to the Trustee to institute proceedings in respect of such Default in its
     own name as Trustee hereunder;

          (3) such Holder or Holders have offered to the Trustee reasonable
     indemnity against the costs, expenses and liabilities to be incurred in
     compliance with such request;

          (4) the Trustee for 60 days after its receipt of such notice, request
     and offer of indemnity has failed to institute any such proceeding; and

          (5) no direction inconsistent with such written request has been given
     to the Trustee during such 60-day period by the Holders of a majority in
     principal amount of the Outstanding Debt Securities of such series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other such
Holders, or to obtain or to seek to obtain priority or preference over any other
of such Holders or to enforce any right under this Indenture, except in the
manner herein provided and for the equal and ratable benefit of all of such
Holders.

          SECTION 5.8. Unconditional Right of Holders to Receive Principal,
Premium and Interest.

          Notwithstanding any other provision in this Indenture, the Holder of
any Debt Security or coupon shall have the right which is absolute and
unconditional to receive payment of the principal of (and premium, if any) and
(subject to Section 3.7) interest on such Debt Security or payment of such
coupon on the respective Stated Maturity or Maturities expressed in such Debt
Security or coupon (or, in the case of redemption or repayment, on the
Redemption Date or the Repayment Date, as the case may be) and to institute suit
for the enforcement of any such payment, and such right shall not be impaired
without the consent of such Holder.


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<PAGE>   51
            SECTION 5.9. Restoration of Rights and Remedies.

            If the Trustee or any Holder has instituted any proceedings to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case the Company, the
Trustee and the Holders shall, subject to any determination in such proceeding,
be restored severally and respectively to their former positions hereunder, and
thereafter all rights and remedies of the Trustee and the Holders shall continue
as though no such proceeding had been instituted.

            SECTION 5.10. Rights and Remedies Cumulative.

            Except as otherwise provided in Section 3.6, no right or remedy
herein conferred upon or reserved to the Trustee or to the Holders is intended
to be exclusive of any other right or remedy, and every right and remedy shall,
to the extent permitted by law, be cumulative and in addition to every other
right and remedy given hereunder or now or hereafter existing at law or in
equity or otherwise. The assertion or employment of any right or remedy
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

            SECTION 5.11. Delay or Omission Not Waiver.

            No delay or omission of the Trustee or of any Holder of any Debt
Security or coupon to exercise any right or remedy accruing upon any Event of
Default shall impair any such right or remedy or constitute a waiver of any such
Event of Default or an acquiescence therein. Every right and remedy given by
this Article or by law to the Trustee or to the Holders may be exercised from
time to time, and as often as may be deemed expedient, by the Trustee or by the
Holders, as the case may be.

            SECTION 5.12. Control by Holders of Debt Securities.

            The Holders of a majority in principal amount of the Outstanding
Debt Securities of any series shall have the right to direct the time, method
and place of conducting any proceeding for any remedy available to the Trustee
or exercising any trust or power conferred on the Trustee with respect to the
Debt Securities of such series, provided, that

            (1) such direction shall not be in conflict with any rule of law or
      with this Indenture;

            (2) subject to the provisions of Section 6.1, the Trustee shall have
      the right to decline to follow any such direction if the Trustee in good
      faith shall, by a Responsible Officer or Responsible Officers of the
      Trustee, determine that the proceedings so directed would be unjustly
      prejudicial to the Holders of Debt Securities of such series not joining
      in any such direction; and


                                      -43-
<PAGE>   52
            (3) the Trustee may take any other action deemed proper by the
      Trustee which is not inconsistent with such direction.

            SECTION 5.13. Waiver of Past Defaults.

            The Holders of not less than a majority in principal amount of the
Outstanding Debt Securities of any series may on behalf of the Holders of all
the Debt Securities of any such series and any related coupons waive any past
default hereunder with respect to such series and its consequences, except a
default

            (1) in the payment of the principal of (or premium, if any) or
      interest on any Debt Security of such series, or in the payment of any
      sinking fund or analogous obligation with respect to the Debt Securities
      of such series, or

            (2) in respect of a covenant or provision hereof which under Article
      Nine cannot be modified or amended without the consent of the Holder of
      each Outstanding Debt Security of such series or coupons affected.

            Upon any such waiver, such default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon.

            SECTION 5.14. Undertaking for Costs.

            All parties to this Indenture agree, and each Holder of any Debt
Security or coupon by his acceptance thereof shall be deemed to have agreed,
that any court may in its discretion require, in any suit for the enforcement of
any right or remedy under this Indenture, or in any suit against the Trustee for
any action taken, suffered or omitted by it as Trustee, the filing by any party
litigant in such suit of an undertaking to pay the costs of such suit, and that
such court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having a due regard to
the merits and good faith of the claims or defenses made by such party litigant,
but the provisions of this Section shall not apply to any suit instituted by the
Trustee, to any suit instituted by any Holder, or group of Holders, holding in
the aggregate more than 10% in principal amount of the Outstanding Debt
Securities of any series, or to any suit instituted by any Holder for the
enforcement of the payment of the principal of (or premium, if any) or interest
on any Debt Security or the payment of any coupons on or after the respective
Stated Maturity or Maturities expressed in such Debt Security or coupon (or, in
the case of redemption or repayment, on or after the Redemption Date or
Repayment Date, as the case may be).

            SECTION 5.15. Waiver of Stay or Extension Laws.

            The Company covenants (to the extent that it may lawfully do so)
that it will not at any time insist upon, or plead, or in any manner whatsoever
claim or take the benefit or advantage of, any stay or extension law whenever
enacted, now or at any time hereafter in force,


                                      -44-
<PAGE>   53
which may affect the covenants or the performance of this Indenture; and the
Company (to the extent that it may lawfully do so) hereby expressly waives all
benefits or advantage of any such law, and covenants that it will not hinder,
delay or impede the execution of any power herein granted to the Trustee, but
will suffer and permit the execution of every such power as though no such law
had been enacted.

                                   ARTICLE SIX

                                   THE TRUSTEE

            SECTION 6.1. Certain Duties and Responsibilities.

            The duties and responsibilities of the Trustee shall be as provided
in the Trust Indenture Act. Notwithstanding the foregoing, no provision of this
Indenture shall require the Trustee to expend or risk its own funds or otherwise
incur any financial liability in the performance of any of its duties hereunder,
or in the exercise of any of its rights or powers, if it shall have reasonable
grounds for believing that repayment of such funds or adequate indemnity against
such risk or liability is not reasonably assured to it. Whether or not therein
expressly so provided, every provision of this Indenture relating to the conduct
or affecting the liability of or affording protection to the Trustee shall be
subject to the provisions of this Section.

            SECTION 6.2. Notice of Default.

            If a default occurs hereunder with respect to Debt Securities of any
series and is not cured or waived, the Trustee shall transmit by mail to all
Holders of Debt Securities of such series notice of such default as and to the
extent provided by the Trust Indenture Act; provided, however, that in the case
of any default of the character specified in Section 5.1(4) with respect to Debt
Securities of such series no such notice to Holders shall be given until at
least 30 days after the occurrence thereof. For the purpose of this Section, the
term "default" means any event which is, or after notice or lapse of time or
both would become, a Default with respect to Debt Securities of such series.

            SECTION 6.3. Certain Rights of Trustee.

            Except as otherwise provided in Section 6.1:

            (a) the Trustee may rely and shall be protected in acting or
refraining from acting upon any resolution, certificate, statement, instrument,
opinion, report, notice, request, direction, consent, order, bond, debenture,
note, coupon or other paper or document believed by it to be genuine and to have
been signed or presented by the proper party or parties;

            (b) any request or direction of the Company mentioned herein shall
be sufficiently evidenced by a Company Request or Company Order and any
resolution of the Board of Directors shall be sufficiently evidenced by a Board
Resolution;


                                      -45-
<PAGE>   54
            (c) whenever in the administration of this Indenture the Trustee
shall deem it desirable that a matter be proved or established prior to taking,
suffering or omitting any action hereunder, the Trustee (unless other evidence
be herein specifically prescribed) may, in the absence of bad faith on its part,
rely upon an Officers' Certificate;

            (d) the Trustee may consult with counsel and the advice of such
counsel or any Opinion of Counsel shall be full and complete authorization and
protection in respect of any action taken, suffered or omitted by it hereunder
in good faith and in reliance thereon;

            (e) the Trustee shall be under no obligation to exercise any of the
rights or powers vested in it by this Indenture at the request or direction of
any of the Holders of Debt Securities of such series or any related coupons
pursuant to this Indenture, unless such Holders shall have offered to the
Trustee, reasonable security or indemnity against the costs, expenses and
liabilities which might be incurred by it in compliance with such request or
direction;

            (f) the Trustee shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond,
debenture, note, coupon, other evidence of indebtedness or other paper or
document, but the Trustee, in its discretion, may make such further inquiry or
investigation into such facts or matters as it may see fit, and, if the Trustee
shall determine to make such further inquiry or investigation, it shall be
entitled to examine the books, records and premises of the Company, personally
or by agent or attorney, other than any such books or records containing
information as to the affairs of the customers of the Company or any of its
subsidiaries; provided that the Trustee may examine such books and records
relating to customers to the extent that such books and records contain
information as to any payments made to such customers in their capacity as
Holders of Debt Securities; and

            (g) the Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents or
attorneys and the Trustee shall not be responsible for any misconduct or
negligence on the part of any agent or attorney appointed with due care by it
hereunder; no Exchange Rate Agent, Global Exchange Agent, Depositary or Paying
Agent shall be deemed an agent of the Trustee and the Trustee shall not be
responsible for any act or omission by any of them.

            SECTION 6.4. Not Responsible for Recitals or Issuance of Debt
Securities.

            The recitals contained herein and in the Debt Securities, except
the Trustee's certificates of authentication, and in any coupons, and the
information in any registration statement, including all attachments thereto,
except information provided by the Trustee therein, shall be taken as the
statements of the Company, and the Trustee assumes no responsibility for their
correctness. The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of the Debt Securities of any series or any
coupons. The Trustee shall not be accountable for the use or application by the
Company of any Debt Securities or the proceeds thereof. The Trustee shall not be
responsible for and makes no representations to the Company's ability or
authority to issue Bearer Securities or the lawfulness thereof.


                                      -46-
<PAGE>   55
            SECTION 6.5. May Hold Debt Securities or Coupons.

            The Trustee, any Paying Agent, the Security Registrar or any other
agent of the Company or the Trustee, in its individual or any other capacity,
may become the owner or pledgee of Debt Securities and coupons, and, subject to
Sections 6.8 and 6.13, may otherwise deal with the Company with the same rights
it would have if it were not Trustee, Paying Agent, Security Registrar or such
agent.

            SECTION 6.6. Money Held in Trust.

            Money held by the Trustee or any Paying Agent in trust hereunder
need not be segregated from other funds except to the extent required by law.
Neither the Trustee nor any Paying Agent shall be under any liability for
interest on any money received by it hereunder except as otherwise agreed with
the Company.

            SECTION 6.7. Compensation and Reimbursement.

            The Company agrees

            (1) to pay to the Trustee from time to time reasonable compensation
      for all services rendered by it hereunder (which compensation shall not be
      limited by any provision of law in regard to the compensation of a trustee
      of an express trust);

            (2) except as otherwise expressly provided herein, to reimburse the
      Trustee upon its request for all reasonable expenses, disbursements and
      advances incurred or made by the Trustee in accordance with any provision
      of this Indenture (including the reasonable compensation and the expenses
      and disbursements of its agents and counsel), except any such expense,
      disbursement or advance as may be attributable to its negligence or bad
      faith; and

            (3) to indemnify the Trustee for, and to hold it harmless against,
      any loss, liability or expense incurred without negligence or bad faith on
      its part, arising out of or in connection with the acceptance or
      administration of this trust or performance of its duties hereunder,
      including the costs and expenses of defending itself against any claim or
      liability in connection with the exercise or performance of any of its
      powers or duties hereunder.

            As security for the performance of the obligations of the Company
under this Section the Trustee shall have a claim prior to the Debt Securities
and any coupons upon all property and funds held or collected by the Trustee as
such, except funds held in trust for the payment of principal of (and premium,
if any) or interest on particular Debt Securities or any coupons.



                                      -47-
<PAGE>   56
            SECTION 6.8. Disqualification; Conflicting Interests.

            If the Trustee has or shall acquire any conflicting interest within
the meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act and this Indenture.

            SECTION 6.9. Corporate Trustee Required; Eligibility.

            There shall at all times be a Trustee hereunder which shall be a
corporation that is eligible pursuant to the Trust Indenture Act to act as such
and organized and doing business under the laws of the United States, any State
thereof or the District of Columbia, authorized under such laws to exercise
corporate trust powers, having a combined capital and surplus of at least
$50,000,000, and subject to supervision or examination by Federal or State
authority. If such corporation publishes reports of condition at least annually,
pursuant to law or to the requirements of the aforesaid supervising or examining
authority, then for the purposes of this Section, the combined capital and
surplus of such corporation shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. If at
any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section, it shall resign immediately in the manner and with
the effect hereinafter specified in this Article.

            SECTION 6.10. Resignation and Removal; Appointment of Successor.

            (a) No resignation or removal of the Trustee and no appointment of a
successor Trustee pursuant to this Article shall become effective until the
acceptance of appointment by the successor Trustee under Section 6.11.

            (b) The Trustee may resign at any time with respect to the Debt
Securities of one or more series by giving written notice thereof to the
Company. If an instrument of acceptance by a successor Trustee shall not have
been delivered to the Trustee within 30 days after the giving of such notice of
resignation, the resigning Trustee may petition any court of competent
jurisdiction for the appointment of a successor Trustee with respect to the Debt
Securities of such series.

            (c) The Trustee may be removed at any time with respect to the Debt
Securities of any series by Act of the Holders of a majority in principal amount
of the Outstanding Debt Securities of such series, delivered to the Trustee and
to the Company.

            (d) If at any time:

            (1) the Trustee shall fail to comply with Section 6.8 with respect
      to the Debt Securities of any series after written request therefor by the
      Company or by any Holder who has been a bona fide Holder of a Debt
      Security of such series for at least six months, or


                                      -48-
<PAGE>   57
            (2) the Trustee shall cease to be eligible under Section 6.9 with
      respect to any series of Debt Securities and shall fail to resign after
      written request therefor by the Company or by any such Holder, or

            (3) the Trustee shall become incapable of acting with respect to any
      series of Debt Securities or a decree or order for relief by a court
      having jurisdiction in the premises shall have been entered in respect of
      the Trustee in an involuntary case under the Federal bankruptcy laws, as
      now or hereafter constituted, or any other applicable Federal or State
      bankruptcy, insolvency or similar law; or a decree or order by a court
      having jurisdiction in the premises shall have been entered for the
      appointment of a receiver, custodian, liquidator, assignee, trustee,
      sequestrator or other similar official of the Trustee or of its property
      or affairs, or any public officer shall take charge or control of the
      Trustee or of its property or affairs for the purpose of rehabilitation,
      conservation, winding up or liquidation, or

            (4) the Trustee shall commence a voluntary case under the Federal
      bankruptcy laws, as now or hereafter constituted, or any other applicable
      Federal or State bankruptcy, insolvency or similar law or shall consent to
      the appointment of or taking possession by a receiver, custodian,
      liquidator, assignee, trustee, sequestrator or other similar official of
      the Trustee or its property or affairs, or shall make an assignment for
      the benefit of creditors, or shall admit in writing its inability to pay
      its debts generally as they become due, or shall take corporate action in
      furtherance of any such action,

then, in any such case, (i) the Company by a Board Resolution may remove the
Trustee with respect to such series or (ii) subject to Section 5.14, any Holder
who has been a bona fide Holder of a Debt Security of any series for at least
six months may, on behalf of himself and all others similarly situated, petition
any court of competent jurisdiction for the removal of the Trustee for the Debt
Securities of such series and the appointment of a successor Trustee.

            (e) If the Trustee shall resign, be removed or become incapable of
acting with respect to any series of Debt Securities, or if a vacancy shall
occur in the office of Trustee for any cause, with respect to the Debt
Securities or one or more series, the Company, by a Board Resolution, shall
promptly appoint a successor Trustee or Trustees with respect to the Debt
Securities of that or those series (it being understood that any such successor
Trustee may be appointed with respect to the Debt Securities of one or more or
all of such series and that at any time there shall be only one Trustee with
respect to the Debt Securities of any particular series) and shall comply with
the applicable requirements of Section 6.11. If, within one year after such
resignation, removal or incapability, or the occurrence of such vacancy, a
successor Trustee with respect to the Debt Securities of any series shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Debt Securities of such series delivered to the Company and the
retiring Trustee, the successor Trustee so appointed shall, forthwith upon its
acceptance of such appointment, become the successor Trustee with respect to the
Debt Securities of such series and to that extent supersede the successor
Trustee appointed by the Company. If no successor Trustee with respect to the
Debt Securities of any series shall have been so appointed by the Company or the
Holders and accepted appointment in the manner hereinafter provided, any


                                      -49-
<PAGE>   58
Holder who has been a bona fide Holder of a Debt Security of such series for at
least six months may, subject to Section 5.14, on behalf of himself and all
others similarly situated, petition any court of competent jurisdiction for the
appointment of a successor Trustee with respect to the Debt Securities of such
series.

            (f) The Company shall give notice of each resignation and each
removal of the Trustee with respect to the Debt Securities of any series and
each appointment of a successor Trustee with respect to the Debt Securities of
any series by mailing written notice of such event by first-class mail, postage
prepaid, to the Holders of Registered Securities, if any, of such series as
their names and addresses appear in the Security Register and, if Debt
Securities of such series are issuable as Bearer Securities, by publishing
notice of such event once in an Authorized Newspaper in each Place of Payment
located outside the United States. Each notice shall include the name of the
successor Trustee with respect to the Debt Securities of such series and the
address of its Corporate Trust Office.

            SECTION 6.11. Acceptance of Appointment by Successor.

            (a) In the case of an appointment hereunder of a successor Trustee
with respect to all Debt Securities, every such successor Trustee so appointed
shall execute, acknowledge and deliver to the Company and to the retiring
Trustee an instrument accepting such appointment, and thereupon the resignation
or removal of the retiring Trustee shall become effective and such successor
Trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, trusts and duties of the retiring Trustee; but, on
request of the Company or the successor Trustee, such retiring Trustee shall,
upon payment of its charges, execute and deliver an instrument transferring to
such successor Trustee all the rights, powers and trusts of the retiring
Trustee, and shall duly assign, transfer and deliver to such successor Trustee
all property and money held by such retiring Trustee hereunder.

            (b) In the case of the appointment hereunder of a successor Trustee
with respect to the Debt Securities of one or more (but not all) series, the
Company, the retiring Trustee upon payment of its charges and each successor
Trustee with respect to the Debt Securities of one or more series shall execute
and deliver an indenture supplemental hereto wherein each successor Trustee
shall accept such appointment and which (1) shall contain such provisions as
shall be necessary or desirable to transfer and confirm to, and to vest in, each
successor Trustee all the rights, powers, trusts and duties of the retiring
Trustee with respect to the Debt Securities of that or those series to which the
appointment of such successor Trustee relates, (2) if the retiring Trustee is
not retiring with respect to all Debt Securities, shall contain such provisions
as shall be deemed necessary or desirable to confirm that all the rights,
powers, trusts and duties of the retiring Trustee with respect to the Debt
Securities of that or those series as to which the retiring Trustee is not
retiring shall continue to be vested in the retiring Trustee, and (3) shall add
to or change any of the provisions of this Indenture as shall be necessary to
provide for or facilitate the administration of the trusts hereunder by more
than one Trustee, it being understood that nothing herein or in such
supplemental indenture shall constitute such Trustees co-trustees of the same
trust and that each such Trustee shall be trustee of a trust or trusts hereunder
separate and apart from any trust or trusts hereunder administered by any other
such Trustee; and upon the execu-


                                      -50-
<PAGE>   59
tion and delivery of such supplemental indenture, the resignation or removal of
the retiring Trustee shall become effective to the extent provided therein and
each such successor Trustee, without any further act, deed or conveyance, shall
become vested with all the rights, powers, trusts and duties of the retiring
Trustee with respect to the Debt Securities of that or those series to which the
appointment of such successor Trustee relates; but, on the request of the
Company or any successor Trustee, such retiring Trustee shall duly assign,
transfer and deliver to such successor Trustee all property and money held by
such retiring Trustee hereunder with respect to the Debt Securities of that or
those series to which the appointment of such successor Trustee relates.

            (c) Upon request of any such successor Trustee, the Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Trustee all such rights, powers and trusts referred
to in paragraph (a) or (b) of this Section, as the case may be.

            (d) No successor Trustee shall accept its appointment unless at the
time of such acceptance such successor Trustee shall be qualified and eligible
under this Article.

            SECTION 6.12. Merger, Conversion, Consolidation or Succession to
Business.

            Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the executing or filing of any paper or any further act on the
part of any of the parties hereto. In case any Debt Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may adopt
such authentication and deliver the Debt Securities so authenticated with the
same effect as if such successor Trustee had itself authenticated such Debt
Securities. In case any Debt Securities shall not have been authenticated by
such predecessor Trustee, any such successor Trustee may authenticate and
deliver such Debt Securities, in either its own name or that of its predecessor
Trustee, with the full force and effect which this Indenture provides for the
certificate of authentication of the Trustee.

            SECTION 6.13. Preferential Collection of Claims Against Company.

            If and when the Trustee shall be or shall become a creditor,
directly or indirectly, secured or unsecured, of the Company (or any other
obligor upon the Debt Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding collection of claims against the
Company (or any such other obligor).

            SECTION 6.14. Authenticating Agent.

            The Trustee shall upon Company request appoint one or more
authenticating agents (including, without limitation, the Company or any
Affiliate thereof) with respect to one or more series of Debt Securities which
shall be authorized on behalf of the Trustee in authenti-


                                      -51-
<PAGE>   60
cating Debt Securities of such series in connection with the issue, delivery,
registration of transfer, exchange, partial redemption or repayment of such Debt
Securities. Wherever reference is made in this Indenture to the authentication
of Debt Securities by the Trustee or the Trustee's certificate of
authentication, such reference shall be deemed to include authentication on
behalf of the Trustee by an authenticating agent and a certificate of
authentication executed on behalf of the Trustee by an authenticating agent.
Each authenticating agent must be acceptable to the Company and must be a
corporation organized and doing business under the laws of the United States or
of any State, having a combined capital surplus of at least $50,000,000,
authorized under such laws to do a trust business and subject to supervision or
examination by Federal or State authorities or the equivalent foreign authority
in the case of an authenticating agent who is not organized and doing business
under the laws of the United States or of any State thereof or the District of
Columbia.

            Any corporation succeeding to the corporate agency business of an
authenticating agent shall continue to be an authenticating agent without the
execution or filing of any paper or any further act on the part of the Trustee
or such authenticating agent.

            An authenticating agent may at any time resign with respect to one
or more series of Debt Securities by giving written notice of resignation to the
Trustee and to the Company. The Trustee may at any time terminate the agency of
any authenticating agent with respect to one or more series of Debt Securities
by giving written notice of termination to such authenticating agent and to the
Company. Upon receiving such a notice of resignation or upon such a termination,
or in case at any time an authenticating agent shall cease to be eligible in
accordance with the provisions of this Section, the Trustee promptly may appoint
a successor authenticating agent. Any successor authenticating agent upon
acceptance of its appointment hereunder shall become vested with all rights,
powers and duties of its predecessor hereunder, with like effect as if
originally named as an authenticating agent herein. No successor authenticating
agent shall be appointed unless eligible under the provisions of this Section.

            The Trustee agrees to pay to each authenticating agent from time to
time reasonable compensation for its services under this Section, and the
Trustee shall be entitled to be reimbursed for such payment, subject to the
provisions of Section 6.7.

            The provisions of Sections 1.4, 1.11, 3.6, 3.9, 6.3, 6.4 and 6.5
shall be applicable to any authenticating agent.

            Pursuant to each appointment made under this Section, the Debt
Securities of each series covered by such appointment may have endorsed thereon,
in lieu of the Trustee's certificate of authentication, an alternate certificate
of authentication in substantially the following form:


                                      -52-
<PAGE>   61
            This is one of the Debt Securities, of the series designated herein,
described in the within-mentioned Indenture.

                         [____________________________________]

                         By____________________________________
                            As Authenticating Agent for the Trustee

                         By____________________________________
                            Authorized Officer


                                      -53-
<PAGE>   62
                                  ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY


            SECTION 7.1. Company to Furnish Trustee Names and Addresses of
Holders.

            The Company will furnish or cause to be furnished to the Trustee
with respect to Debt Securities of each series for which it acts as Trustee:

            (1) semi-annually, not more than 15 days after the Regular Record
      Date in respect of the Debt Securities of such series or on May 15 and
      November 15 of each year with respect to each series of Debt Securities
      for which there are no Regular Record Dates, a list, in such form as the
      Trustee may reasonably require, of the names and addresses of the Holders
      of Registered Securities as of such Regular Record Date or May 1 or
      November 1, as the case may be, and

            (2) at such other times as the Trustee may request in writing,
      within 30 days after the receipt by the Company of any such request, a
      list of similar form and content as of a date not more than 15 days prior
      to the time such list is furnished;

provided, however, that if and so long as the Trustee shall be the Security
Registrar, no such list need be furnished.

            SECTION 7.2. Preservation of Information; Communications to Holders.

            (a) The Trustee shall preserve, in as current a form as is
reasonably practicable, the names and addresses of Holders of Registered
Securities contained in the most recent list furnished to the Trustee as
provided in Section 7.1 and the names and addresses of Holders of Registered
Securities received by the Trustee in its capacity as Paying Agent or Security
Registrar, if so acting. The Trustee may destroy any list furnished to it as
provided in Section 7.1 upon receipt of a new list so furnished. The Trustee
shall preserve for at least two years the names and addresses of Holders of
Bearer Securities filed with the Trustee by such Holders.

            (b) The rights of Holders to communicate with other Holders with
respect to their rights under this Indenture or under the Debt Securities, and
the corresponding rights and privileges of the Trustee, shall be as provided by
the Trust Indenture Act.

            (c) Every Holder of Debt Securities or coupons, by receiving and
holding the same, agrees with the Company and the Trustee that neither the
Company nor the Trustee shall be held accountable by reason of any disclosure of
information as to the names and addresses of the Holders made pursuant to the
Trust Indenture Act.

            SECTION 7.3. Reports by Trustee.

            (a) Within 60 days after May 15 of each year commencing with the
first May 15 after the first issuance of Debt Securities pursuant to this
Indenture and at any other time re-


                                      -54-
<PAGE>   63
quired by the Trust Indenture Act, the Trustee shall transmit to Holders such
reports concerning the Trustee and its actions under this Indenture and such
other matters as may be required pursuant to the Trust Indenture Act in the
manner required by the Trust Indenture Act.

            (b) A copy of each such report shall, at the time of such
transmission to Holders, be filed by the Trustee with each stock exchange upon
which any Debt Securities of such series are listed, with the Commission and
also with the Company. The Company will notify the Trustee when any series of
Debt Securities are listed on any stock exchange.

            SECTION 7.4. Reports by Company.

            The Company shall file with the Trustee and the Commission, and
transmit to Holders such information, documents and other reports, and such
summaries thereof, as may be required pursuant to the Trust Indenture Act at the
time and in the manner pursuant to such Act; provided that such information,
documents or reports required to be filed with the Commission pursuant to
Section 13 or Section 15(d) of the Securities Exchange Act of 1934 shall be
filed with the Trustee within 15 days after the same is so required to be filed
with the Commission.

                                  ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

            SECTION 8.1. Company May Consolidate, etc. Only on Certain Terms.

            The Company shall not consolidate with or merge into any other
corporation or convey, transfer or lease its properties and assets substantially
as an entirety to any Person, and the Company shall not permit any Person to
consolidate with or merge into the Company or convey, transfer or lease its
properties and assets substantially as an entirety to the Company, unless:

            (1) the corporation formed by such consolidation or into which the
      Company is merged or the Person which acquires by conveyance or transfer,
      or which leases, the properties and assets of the Company substantially as
      an entirety shall be a corporation organized and existing under the laws
      of the United States of America, any political subdivision thereof or any
      State or the District of Columbia thereof and shall expressly assume, by
      an indenture supplemental hereto, executed and delivered to the Trustee,
      in form satisfactory to the Trustee, the due and punctual payment of the
      principal of (and premium, if any) and interest (including all additional
      amounts, if any, payable pursuant to Section 10.6) on all the Debt
      Securities and any related coupons and the performance of every covenant
      of this Indenture on the part of the Company to be performed or observed;

            (2) immediately after giving effect to such transaction, no Event of
      Default, and no event which, after notice or lapse of time, or both, would
      become an Event of Default, shall have happened and be continuing;


                                      -55-
<PAGE>   64
            (3) the Company has delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel each stating that such
      consolidation, merger, conveyance, transfer or

lease and such supplemental indenture comply with this Article and that all
conditions precedent herein provided for relating to such transaction have been
met.

            SECTION 8.2. Successor Corporation Substituted.

            Upon any consolidation with or merger into any other corporation, or
any conveyance, transfer or lease of the properties and assets of the Company
substantially as an entirety in accordance with Section 8.1, the successor
corporation formed by such consolidation or into which the Company is merged or
to which such conveyance, transfer or lease is made shall succeed to, and be
substituted for, and may exercise every right and power of, the Company under
this Indenture with the same effect as if such successor had been named as the
Company herein, and thereafter, except in the case of a lease, the Company
(which term for this purpose shall mean the Person named as the "Company" in the
first paragraph of this instrument or any successor corporation which shall
theretofore have become such in the manner presented in this Article) shall be
relieved of all obligations and covenants under this Indenture and the Debt
Securities and coupons.

                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES


            SECTION 9.1. Supplemental Indentures without Consent of Holders.

            Without the consent of any Holders, the Company, when authorized by
a Board Resolution, and the Trustee, at any time and from time to time, may
enter into one or more indentures supplemental hereto, in form satisfactory to
the Trustee, for any of the following purposes:

            (1) to evidence the succession of another corporation to the
      Company, and the assumption by such successor of the covenants of the
      Company herein and in the Debt Securities contained; or

            (2) to add to the covenants of the Company, for the benefit of the
      Holders of all or any series of Debt Securities or coupons (and if such
      covenants are to be for the benefit of less than all series of Debt
      Securities or coupons, stating that such covenants are expressly being
      included solely for the benefit of such series), to convey, transfer,
      assign, mortgage or pledge any property to or with the Trustee, or to
      surrender any right or power herein conferred upon the Company; or

            (3) to add any additional Events of Default (and if such Events of
      Default are to be applicable to less than all series of Debt Securities,
      stating that such Events of Default are expressly being included solely to
      be applicable to such series); or


                                      -56-

                                       1
<PAGE>   65
            (4) to add to, change or eliminate any of the provisions of this
      Indenture to provide that Bearer Securities may be registrable as to
      principal, to change or eliminate any restrictions on the payment of
      principal (or premium, if any) on Registered Securities or of principal
      (or premium, if any) or any interest on Bearer Securities, to permit
      Bearer Securities to be issued in exchange for Registered Securities of
      other authorized denominations or to permit or facilitate the issuance of
      Debt Securities in uncertificated form, provided any such action shall not
      adversely affect the interests of the Holders of Debt Securities of any
      series or any related coupons in any material respect; or

            (5) to add to, change or eliminate any of the provisions of this
      Indenture, provided that any such addition, change or elimination (a)
      shall become effective only when there is no Debt Security Outstanding of
      any series created prior to the execution of such supplemental indenture
      which is entitled to the benefit of such provisions or (b) shall not apply
      to any Debt Security Outstanding; or

            (6) to secure the Debt Securities;

            (7) to establish the form or terms of Debt Securities of any series
      as permitted by Sections 2.1 and 3.1; or

            (8) to evidence and provide for the acceptance of appointment
      hereunder by a successor Trustee with respect to the Debt Securities of
      one or more series and to add to or change any of the provisions of this
      Indenture as shall be necessary to provide for or facilitate the
      administration of the trusts hereunder by more than one Trustee, pursuant
      to the requirements of Section 6.11(b); or

            (9) to cure any ambiguity, to correct or supplement any provision
      herein which may be defective or inconsistent with any other provision
      herein, or to make any other provisions with respect to matters or
      questions arising under this Indenture which shall not be inconsistent
      with any provision of this Indenture, provided such other provisions shall
      not adversely affect the interests of the Holders of Debt Securities of
      any series or any related coupons in any material respect; or

            (10) to add to or change or eliminate any provision of this
      Indenture as shall be necessary or desirable in accordance with any
      amendments to the Trust Indenture Act, provided such action shall not
      adversely affect the interest of Holders of Debt Securities of any series
      or any appurtenant coupons in any material respect.

            SECTION 9.2. Supplemental Indentures with Consent of Holders.

            With the consent of the Holders of not less than a majority in
principal amount of the Outstanding Debt Securities of each series affected by
such supplemental indenture, by Act of said Holders delivered to the Company and
the Trustee, the Company, when authorized by a Board Resolution, and the Trustee
may enter into an indenture or indentures supplemental hereto for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of modifying in any manner the rights of the
Holders under this


                                      -57-

                                       2
<PAGE>   66
Indenture of such Debt Securities of such series and any related coupons;
provided, however, that no such supplemental indenture shall, without the
consent of the Holder of each Outstanding Debt Security or coupon affected
thereby,

            (1) change the Stated Maturity of the principal or any installment
      of principal of, or any installment of interest on, any Debt Security, or
      reduce the principal amount thereof or the interest thereon or any premium
      payable upon redemption or repayment thereof, or change any obligation of
      the Company to pay additional amounts pursuant to Section 10.6 (except as
      contemplated by Section 8.1(1) and permitted by Section 9.1(1)), or reduce
      the amount of the principal of an Original Issue Discount Security that
      would be due and payable upon a declaration of acceleration of the
      Maturity thereof pursuant to Section 5.2, or change any Place of Payment,
      or the coin or currency in which any Debt Security or the interest
      thereon or any coupon is payable, or impair the right to institute suit
      for the enforcement of any such payment on or after the Stated Maturity
      thereof (or, in the case of redemption or repayment, on or after the
      Redemption Date or Repayment Date, as the case may be), or modify the
      provisions of this Indenture with respect to the subordination of the Debt
      Securities of any series in a manner adverse to the Holder, or

            (2) reduce the percentage in principal amount of the Outstanding
      Debt Securities of any series, the consent of whose Holders is required
      for any such supplemental indenture, or the consent of whose Holders is
      required for any waiver (of compliance with certain provisions of this
      Indenture or certain defaults hereunder and their consequences) provided
      for in this Indenture, or reduce the requirements of Section 14.4 for
      quorum or voting, or

            (3) modify any of the provisions of this Section, Section 5.13 or
      Section 10.8, except to increase any such percentage or to provide that
      certain other provisions of this Indenture cannot be modified or waived
      without the consent of the Holder of each Outstanding Debt Security
      affected thereby; provided, however, that this clause shall not be deemed
      to require the consent of any Holder with respect to changes in the
      references to "the Trustee" and concomitant changes in this Section and
      Section 10.8, or the deletion of this proviso, in accordance with the
      requirements of Section 6.11(b) and 9.1(7), or

            (4) adversely affect the right to repayment, if any, of Debt
      Securities of any series at the option of the Holders thereof.

            A supplemental indenture which changes or eliminates any covenant or
other provision of this Indenture which has expressly been included solely for
the benefit of one or more particular series of Debt Securities, or which
modifies the rights of the Holders of Debt Securities of such series with
respect to such covenant or other provision, shall be deemed not to affect the
rights under this Indenture of the Holders of Debt Securities of any other
series.

            It shall not be necessary for any Act of Holders of the Debt
Securities under this Section to approve the particular form of any proposed
supplemental indenture, but it shall be sufficient if such Act shall approve the
substance thereof.


                                      -58-

                                       3
<PAGE>   67
            SECTION 9.3. Execution of Supplemental Indentures.

            In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 6.1) shall be fully protected in relying upon, an
Opinion of Counsel stating that the execution of such supplemental indenture is
authorized or permitted by this Indenture. The Trustee may, but shall not be
obligated to, enter into any such supplemental indenture which affects the
Trustee's own rights, duties or immunities under this Indenture or otherwise.

            SECTION 9.4. Effect of Supplemental Indentures.

            Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder
of Debt Securities theretofore or thereafter authenticated and delivered
hereunder and of any coupons appertaining thereto shall be bound thereby.

            SECTION 9.5. Conformity with Trust Indenture Act.

            Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of the Trust Indenture Act as then in effect.

            SECTION 9.6. Reference in Debt Securities to Supplemental
Indentures.

            Debt Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture. If the Company shall
so determine, new Debt Securities of any series and any appurtenant coupons so
modified as to conform, in the opinion of the Trustee and the Board of
Directors, to any such supplemental indenture may be prepared and executed by
the Company and authenticated and delivered by the Trustee in exchange for
Outstanding Debt Securities of such series and any appurtenant coupons.

                                   ARTICLE TEN

                                    COVENANTS


            SECTION 10.1. Payment of Principal, Premium and Interest.

            The Company covenants and agrees for the benefit of each series of
Debt Securities and any appurtenant coupons that it will duly and punctually pay
the principal of (and premium, if any) and interest on the Debt Securities and
any appurtenant coupons in accordance with the terms of the Debt Securities, any
appurtenant coupons and this Indenture. Any interest due on Bearer Securities on
or before Maturity, other than additional amounts, if any, payable as provided
in Section 10.6 in respect of principal of (or premium, if any, on) such a Debt
Security,


                                      -59-

                                       4
<PAGE>   68
shall be payable only upon presentation and surrender of the several coupons for
such interest installments as are evidenced thereby as they severally mature.

            SECTION 10.2. Maintenance of Office or Agency.

            The Company will maintain in each Place of Payment for any series of
Debt Securities an office or agency where Debt Securities (but, except as
otherwise provided below, unless such Place of Payment is located outside the
United States, not Bearer Securities) may be presented or surrendered for
payment, where Debt Securities may be surrendered for registration of transfer
or exchange and where notices and demands to or upon the Company in respect of
the Debt Securities and this Indenture may be served. If Debt Securities of a
series are issuable as Bearer Securities, the Company will maintain, subject to
any laws or regulations applicable thereto, an office or agency in a Place of
Payment for such series which is located outside the United States where Debt
Securities of such series and the related coupons may be presented and
surrendered for payment (including payment of any additional amounts payable on
Debt Securities of such series pursuant to Section 10.6); provided, however,
that if the Debt Securities of such series are listed on The Stock Exchange of
the United Kingdom and the Republic of Ireland or the Luxembourg Stock Exchange
or any other stock exchange located outside the United States and such stock
exchange shall so require, the Company will maintain a Paying Agent in London or
Luxembourg or any other required city located outside the United States, as the
case may be, so long as the Debt Securities of such series are listed on such
exchange. The Company will give prompt written notice to the Trustee of this
location, and any change in the location, of any such office or agency. If at
any time the Company shall fail to maintain any such required office or agency
or shall fail to furnish the Trustee with the address thereof, such
presentations, surrenders, notices or demands may be made or served at the
Corporate Trust Office of the Trustee, and the Company hereby appoints the
Trustee its agent to receive all presentations, surrenders, notices and demands,
except that Bearer Securities of that series and the related coupons may be
presented and surrendered for payment (including payment of any additional
amounts payable on Bearer Securities of that series pursuant to Section 10.6) at
the place specified for the purpose pursuant to Section 3.1(5).

            No payment of principal of, premium or interest on Bearer Securities
shall be made at any office or agency of the Company in the United States or by
check mailed to any address in the United States or by transfer to an account
maintained with a bank located in the United States; provided, however, payment
of principal of and any premium and interest denominated in Dollars (including
additional amounts payable in respect thereof) on any Bearer Security may be
made at an office or agency of, and designated by, the Company located in the
United States if (but only if) payment of the full amount of such principal,
premium, interest or additional amounts in Dollars at all offices outside the
United States maintained for the purpose by the Company in accordance with this
Indenture is illegal or effectively precluded by exchange controls or other
similar restrictions and the Trustee receives an Opinion of Counsel that such
payment within the United States is legal. Unless otherwise provided as
contemplated by Section 3.1 with respect to any series of Debt Securities, at
the option of the Holder of any Bearer Security or related coupon, payment may
be made by check in the currency designated for such payment pursuant to the
terms of such Bearer Security presented or mailed to an address outside the


                                      -60-
<PAGE>   69
United States or by transfer to an account in such currency maintained by the
payee with a bank located outside the United States.

            The Company may also from time to time designate one or more other
offices or agencies (in or outside of such Place of Payment) where the Debt
Securities of one or more series and any appurtenant coupons (subject to the
preceding paragraph) may be presented or surrendered for any or all such
purposes, and may from time to time rescind such designations; provided,
however, that no such designation or rescission shall in any manner relieve the
Company of its obligation to maintain an office or agency in each Place of
Payment for any series of Debt Securities for such purposes. The Company will
give prompt written notice to the Trustee of any such designation and any change
in the location of any such other office or agency.

            SECTION 10.3. Money for Debt Securities Payments to Be Held in
Trust.

            If the Company shall at any time act as its own Paying Agent with
respect to any series of Debt Securities, it will, on or before each due date of
the principal of (and premium, if any) or interest on any of the Debt Securities
of such series and any appurtenant coupons, segregate and hold in trust for the
benefit of the Persons entitled thereto a sum sufficient to pay the principal
(and premium, if any) or interest so becoming due until such sums shall be paid
to such Persons or otherwise disposed of as herein provided, and will promptly
notify the Trustee of its action or failure so to act.

            Whenever the Company shall have one or more Paying Agents with
respect to any series of Debt Securities, it will, on or before each due date of
the principal of (and premium, if any) or interest on any of the Debt Securities
of such series and any appurtenant coupons, deposit with a Paying Agent a sum
sufficient to pay the principal (and premium, if any) or interest so becoming
due, such sum to be held in trust for the benefit of the Persons entitled to
such principal, premium or interest, and (unless such Paying Agent is the
Trustee) the Company will promptly notify the Trustee of its action or failure
so to act.

            The Company will cause each Paying Agent with respect to any series
of Debt Securities other than the Trustee to execute and deliver to the Trustee
an instrument in which such Paying Agent shall agree with the Trustee, subject
to the provisions of this Section, that such Paying Agent will

            (1) hold all sums held by it for the payment of the principal of
      (and premium, if any) or interest on Debt Securities of such series and
      any appurtenant coupons in trust for the benefit of the Persons entitled
      thereto until such sums shall be paid to such Persons or otherwise
      disposed of as herein provided;

            (2) give the Trustee notice of any default by the Company (or any
      other obligor upon the Debt Securities of such series or any appurtenant
      coupons) in the making of any payment of principal of (and premium, if
      any) or interest on the Debt Securities of such series or any appurtenant
      coupons; and


                                      -61-
<PAGE>   70
            (3) at any time during the continuance of any such default, upon the
      written request of the Trustee, forthwith pay to the Trustee all sums so
      held in trust by such Paying Agent.

            The Company may at any time, for the purpose of terminating its
obligations under this Indenture with respect to Debt Securities of any series
or for any other purpose, pay, or by Company Order direct any Paying Agent to
pay, to the Trustee all sums held in trust by the Company or such Paying Agent,
such sums to be held by the Trustee upon the same trusts as those upon which
such sums were held by the Company or such Paying Agent; and, upon such payment
by any Paying Agent to the Trustee, such Paying Agent shall be released from all
further liability with respect to such money.

            Any principal and interest received on the Eligible Instruments
deposited with the Trustee or any money deposited with the Trustee or any Paying
Agent, or then held by the Company, in trust for the payment of the principal
of (and premium, if any) or interest on any Debt Security of any series or any
appurtenant coupons or any money on deposit with the Trustee or any Paying Agent
representing amounts deducted from the Redemption Price or Repayment Price with
respect to unmatured coupons not presented upon redemption or exercise of the
Holder's option for repayment pursuant to Section 11.6 or 13.3 and remaining
unclaimed for two years after such principal (and premium, if any) or interest
has become due and payable shall be paid to the Company on Company Request, or
(if then held by the Company) shall be discharged from such trust; and the
Holder of such Debt Security or any coupon appertaining thereto shall
thereafter, as an unsecured general creditor, look only to the Company for
payment thereof, and all liability of the Trustee or such Paying Agent with
respect to such trust money (including the principal and interest received on
Eligible Instruments deposited with the Trustee), and all liability of the
Company as trustee thereof, shall thereupon cease; provided, however, that the
Trustee or such Paying Agent, before being required to make any such repayment,
may at the expense of the Company cause to be published once, in an Authorized
Newspaper of general circulation in the Borough of Manhattan, The City of New
York, and each Place of Payment or mailed to each such Holder, or both, notice
that such money remains unclaimed and that, after a date specified therein,
which shall not be less than 30 days from the date of such publication or
mailing, any unclaimed balance of such money then remaining will be repaid to
the Company.

            SECTION 10.4. Purchase of Debt Securities by Company or Subsidiary.

            If and so long as the Debt Securities of a series are listed on The
Stock Exchange of the United Kingdom and the Republic of Ireland and such stock
exchange shall so require, the Company will not, and will not permit any of its
Subsidiaries to, purchase any Debt Securities of that series by private treaty
at a price (exclusive of expenses and accrued interest) which exceeds 120% of
the mean of the nominal quotations of the Debt Securities of that series as
shown in The Stock Exchange Daily Official List for the last trading day
preceding the date of purchase.

            SECTION 10.5. Existence.

            Subject to Article Eight, the Company will do or cause to be done
all things necessary to preserve and keep in full force and effect its
existence, rights (charter and statutory) and


                                      -62-
<PAGE>   71
franchises; provided, however, that the Company shall not be required to
preserve any such right or franchise if the Board of Directors shall determine
that the preservation thereof is no longer desirable in the conduct of the
business of the Company and that the loss thereof is not and is not reasonably
likely to be disadvantageous in any material respect to the Holders.

            SECTION 10.6. Restrictions Upon Sale or Issuance of Capital Stock of
Certain Subsidiary Banks.

            The Company will not, and will not permit any Subsidiary to, sell,
assign, pledge, transfer or otherwise dispose of, or permit any Principal
Subsidiary Bank to issue except to the Corporation, any shares of Capital Stock
of, or any securities convertible into Capital Stock of, any Principal
Subsidiary Bank or any shares of Capital Stock of any Subsidiary owning,
directly or indirectly, in whole or in part, Capital Stock of any Principal
Subsidiary Bank, except:

            (1) any sale, assignment, pledge, transfer or other disposition or
      issuance made, in the minimum amount required by law, to any person for
      the purpose of the qualification of such person to serve as a director;

            (2) any sale, assignment, pledge, transfer or other disposition or
      issuance for fair market value (as determined by the Board of Directors of
      the Company, such determination being evidenced by a resolution of the
      Board of Directors), if, after giving effect to such disposition and to
      the issuance of any shares issuable upon conversion or exchange of
      securities convertible or exchangeable into Capital Stock, the Company
      would own directly or indirectly through other Subsidiaries not less than
      80% of the shares of each class of Capital Stock of such Principal
      Subsidiary Bank;

            (3) any sale, assignment, pledge, transfer or other disposition or
      issuance made in compliance with an order or direction of a court or
      regulatory authority of competent jurisdiction; or

            (4) any sale by any Principal Subsidiary Bank of additional shares
      of Capital Stock to its stockholders at any price, so long as (a) prior to
      such sale the Company owns, directly or indirectly, shares of the same
      class and (b) immediately after such sale, the percentage of the shares of
      such class of Capital Stock owned by the Company shall not have been
      reduced.

            Notwithstanding the foregoing, any Principal Subsidiary Bank may be
merged into or consolidated with another banking institution organized under the
laws of the United States, any State thereof or the District of Columbia, if
after giving effect to such merger or consolidation, the Corporation or any
Wholly-Owned Subsidiary owns at least 80% of the Capital Stock of such other
banking institution then issued and outstanding free and clear of any security
interest and if, immediately after giving effect thereto, no default or Event of
Default shall have happened and be continuing.


                                      -63-
<PAGE>   72
            SECTION 10.7. Payment of Additional Amounts.

            If the Debt Securities of a series provide for the payment of
additional amounts, the Company will pay to the Holder of any Debt Security of
any series or any coupon appertaining thereto additional amounts upon the terms
and subject to the conditions provided therein. Whenever in this Indenture there
is mentioned, in any context, the payment of the principal of (or premium, if
any) or interest on, or in respect of, any Debt Security of any series or any
related coupon or the net proceeds received on the sale or exchange of any Debt
Security of any series, such mention shall be deemed to include mention of the
payment of additional amounts provided for in the terms of such Debt Securities
and this Section to the extent that, in such context, additional amounts are,
were or would be payable in respect thereof pursuant to the provisions of this
Section and express mention of the payment of additional amounts (if applicable)
in any provisions hereof shall not be construed as excluding additional amounts
in those provisions hereof where such express mention is not made.

            If the Debt Securities of a series provide for the payment of
additional amounts, at least 10 days prior to the first Interest Payment Date
with respect to that series of Debt Securities (or if the Debt Securities of
that series will not bear interest prior to Maturity, the first day on which a
payment of principal (and premium, if any) is made), and at least 10 days prior
to each date of payment of principal (and premium, if any) or interest if there
has been any change with respect to the matters set forth in the below-mentioned
Officers' Certificate, the Company will furnish the Trustee and the Company's
principal Paying Agent or Paying Agents, if other than the Trustee, with an
Officers' Certificate instructing the Trustee and such Paying Agent or Paying
Agents whether such payment of principal of (and premium, if any) or interest on
the Debt Securities of that series shall be made to Holders of Debt Securities
of that series or the related coupons who are United States Aliens without
withholding for or on account of any tax, assessment or other governmental
charge described in the Debt Securities of that series. If any such withholding
shall be required, then such Officers' Certificate shall specify by country the
amount, if any, required to be withheld on such payments to such Holders of Debt
Securities or coupons and the Company will pay to the Trustee or such Paying
Agent the additional amounts, if any, required by the terms of such Debt
Securities and the first paragraph of this Section. The Company covenants to
indemnify the Trustee and any Paying Agent for, and to hold them harmless
against, any loss, liability or expense reasonably incurred without negligence
or bad faith on their part arising out of or in connection with actions taken or
omitted by any of them in reliance on any Officers' Certificate furnished
pursuant to this Section.

            SECTION 10.8. Officers' Certificate as to Default.

            The Company will deliver to the Trustee, on or before a date not
more than four months after the end of each fiscal year of the Company ending
after the date hereof, an Officers' Certificate, stating whether or not to the
best knowledge of the signers thereof the Company is in default in the
performance and observance of any of the terms, provisions and conditions of
this Indenture, and, if the Company shall be in default, specifying all such
defaults and the nature thereof of which they may have knowledge.


                                      -64-
<PAGE>   73
            The Company shall file with the Trustee written notice of the
occurrence of any default or Event of Default.

            SECTION 10.9. Waiver of Certain Covenants.

            The Company may omit in any particular instance to comply with any
covenant or condition set forth in Section 10.5 with respect to the Debt
Securities of any series if, before the time for such compliance the Holders of
at least a majority in principal amount of the Debt Securities at the time
Outstanding shall, by Act of such Holders, either waive such compliance in such
instance or generally waive compliance with such covenant or condition, but no
such waiver shall extend to or affect such covenant or condition except to the
extent so expressly waived, and, until such waiver shall become effective, the
obligations of the Company and the duties of the Trustee in respect of any such
covenant or condition shall remain in full force and effect.

                                 ARTICLE ELEVEN

                          REDEMPTION OF DEBT SECURITIES


            SECTION 11.1. Applicability of Article.

            Debt Securities of any series which are redeemable before their
Stated Maturity shall be redeemable in accordance with their terms and (except
as otherwise specified as contemplated by Section 3.1 for Debt Securities of
any series) in accordance with this Article.

            SECTION 11.2. Election to Redeem; Notice to Trustee.

            The election of the Company to redeem any Debt Securities shall be
evidenced by a Board Resolution. In case of any redemption at the election of
the Company of less than all of the Debt Securities of any series, the Company
shall, at least 45 days prior to the Redemption Date fixed by the Company
(unless a shorter notice shall be satisfactory to the Trustee), notify the
Trustee of such Redemption Date and of the principal amount and the tenor and
terms of the Debt Securities of any series to be redeemed. In the case of any
redemption of Debt Securities prior to the expiration of any restriction on such
redemption provided in the terms of such Debt Securities or elsewhere in this
Indenture, the Company shall furnish the Trustee with an Officers' Certificate
evidencing compliance with such restriction.

            SECTION 11.3. Selection by Trustee of Debt Securities to be
Redeemed.

            Except as otherwise specified as contemplated by Section 3.1 for
Debt Securities of any series, if less than all the Debt Securities of any
series with like tenor and terms are to be redeemed, the particular Debt
Securities to be redeemed shall be selected not more than 60 days prior to the
Redemption Date by the Trustee, from the Outstanding Debt Securities of such
series with like tenor and terms not previously called for redemption, by such
method as the Trustee shall deem fair and appropriate and which may provide for
the selection for redemption of portions (equal to the minimum authorized
denomination for Debt Securities of such series or any integral multiple thereof
which is also an authorized denomination) of the principal amount of


                                      -65-
<PAGE>   74
Registered Securities or Bearer Securities (if issued in more than one
authorized denomination) of such series of a denomination larger than the
minimum authorized denomination for Debt Securities of such series.

            The Trustee shall promptly notify the Company in writing of the Debt
Securities selected for redemption and, in the case of any Debt Securities
selected for partial redemption, the principal amount thereof to be redeemed.

            For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the redemption of Debt Securities shall
relate, in the case of any Debt Security redeemed or to be redeemed only in
part, to the portion of the principal amount of such Debt Security which has
been or is to be redeemed.

            SECTION 11.4. Notice of Redemption.

            Notice of redemption shall be given in the manner provided in
Section 1.6 not less than 30 nor more than 60 days prior to the Redemption Date,
to each Holder of Debt Securities to be redeemed.

            All notices of redemption shall state:

            (1) the Redemption Date,

            (2) the Redemption Price,

            (3) if less than all Outstanding Debt Securities of any series are
      to be redeemed, the identification (and, in the case of partial
      redemption, the principal amounts) of the particular Debt Securities to be
      redeemed,

            (4) that on the Redemption Date the Redemption Price will become due
      and payable upon each such Debt Security to be redeemed, and that interest
      thereon shall cease to accrue on and after said date,

            (5) the Place or Places of Payment where such Debt Securities,
      together in the case of Bearer Securities with all coupons, if any,
      appertaining thereto maturing after the Redemption Date, are to be
      surrendered for payment of the Redemption Price,

            (6) that Bearer Securities may be surrendered for payment only at
      such place or places which are outside the United States, except as
      otherwise provided in Section 10.2,

            (7) that the redemption is for a sinking fund, if such is the case,
      and

            (8) the CUSIP number, if any.

            A notice of redemption published as contemplated by Section 1.6 need
not identify particular Registered Securities to be redeemed.


                                      -66-
<PAGE>   75
            Notice of redemption of Debt Securities to be redeemed at the
election of the Company shall be given by the Company, or, at the Company's
request, by the Trustee in the name and at the expense of the Company, and shall
be irrevocable.

            SECTION 11.5. Deposit of Redemption Price.

            On or prior to any Redemption Date, the Company shall deposit with
the Trustee or with a Paying Agent (or, if the Company is acting as its own
Paying Agent, aggregate and hold in trust as provided in Section 10.3) an amount
of money and/or, to the extent the Debt Securities to be redeemed are
denominated and payable in Dollars only, Eligible Instruments the payments of
principal and interest on which when due (and without reinvestment and providing
no tax liability will be imposed upon the Trustee or the Holders of the Debt
Securities to be redeemed) will provide money on or prior to the Redemption Date
in such amounts as will (together with any money irrevocably deposited in trust
with the Trustee, without investment) be sufficient to pay the Redemption Price
of, and (except if the Redemption Date shall be an Interest Payment Date)
accrued interest on, all the Debt Securities or portions thereof which are to be
redeemed on that date; provided, however, that deposits with respect to Bearer
Securities shall be made with a Paying Agent or Paying Agents located outside
the United States except as otherwise provided in Section 10.2, unless otherwise
specified as contemplated by Section 3.1.

            SECTION 11.6. Debt Securities Payable on Redemption Date.

            Notice of redemption having been given as aforesaid, the Debt
Securities to be redeemed shall, on the Redemption Date, become due and payable
at the Redemption Price therein specified and from and after such date (unless
the Company shall default in the payment of the Redemption Price and accrued
interest) such Debt Securities shall cease to bear interest and the coupons for
such interest appertaining to any Bearer Securities so to be redeemed, except to
the extent provided below, shall be void. Upon surrender of any such Debt
Security for redemption in accordance with said notice, such Debt Security shall
be paid by the Company at the Redemption Price, together with accrued interest
to the Redemption Date; provided, however, that installments of interest on
Bearer Securities whose Stated Maturity is on or prior to the Redemption Date
shall be payable only upon presentation and surrender of coupons for such
interest (at an office or agency located outside the United States except as
otherwise provided in Section 10.2), and provided further, that installments of
interest on Registered Securities whose Stated Maturity is on or prior to the
Redemption Date shall be payable to the Holders of such Debt Securities, or one
or more Predecessor Securities, registered as such on the relevant Record Dates
according to their terms and the provisions of Section 3.7.

            If any Bearer Security surrendered for redemption shall not be
accompanied by all appurtenant coupons maturing after the Redemption Date, such
Bearer Security may be paid after deducting from the Redemption Price an amount
equal to the face amount of all such missing coupons, or the surrender of such
missing coupon or coupons may be waived by the Company and the Trustee if there
be furnished to them such security or indemnity as they may require to save each
of them and any Paying Agent harmless. If thereafter the Holder of such Bearer
Security shall surrender to the Trustee or any Paying Agent any such missing
coupon in respect of


                                      -67-
<PAGE>   76
which a deduction shall have been made from the Redemption Price, such Holder
shall be entitled to receive the amount so deducted without interest thereon;
provided, however, that interest represented by coupons shall be payable only
upon presentation and surrender of those coupons at an office or agency located
outside of the United States except as otherwise provided in Section 10.2.

            If any Debt Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Debt Security.

            SECTION 11.7. Debt Securities Redeemed in Part.

            Any Registered Security which is to be redeemed only in part shall
be surrendered at a Place of Payment therefor (with, if the Company, the
Security Registrar or the Trustee so requires, due endorsement by, or a written
instrument of transfer in form satisfactory to the Company, the Security
Registrar and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing), and the Company shall execute, and the Trustee
shall authenticate and deliver to the Holder of such Debt Security without
service charge, a new Registered Security or Registered Securities of the same
series and of like tenor and terms, of any authorized denominations as requested
by such Holder in aggregate principal amount equal to and in exchange for the
unredeemed portion of the principal of the Debt Security so surrendered.

                                 ARTICLE TWELVE

                                  SINKING FUNDS


            SECTION 12.1. Applicability of Article.

            The provisions of this Article shall be applicable to any sinking
fund for the retirement of Debt Securities of a series except as otherwise
specified as contemplated by Section 3.1 for Debt Securities of such series.

            The minimum amount of any sinking fund payment provided for by the
terms of Debt Securities of any series is herein referred to as a "mandatory
sinking fund payment", and any payment in excess of such minimum amount provided
for by the term of Debt Securities of any series is herein referred to as an
"optional sinking fund payment". If provided for by the terms of Debt Securities
of any series, the amount of any sinking fund payment may be subject to
reduction as provided in Section 12.2. Each sinking fund payment shall be
applied to the redemption of Debt Securities of any series as provided for by
the terms of Debt Securities of such series.

            SECTION 12.2. Satisfaction of Sinking Fund Payments with Debt
Securities.

            The Company (1) may deliver Outstanding Debt Securities of a series
(other than any previously called for redemption), together in the case of any
Bearer Securities of such series with all unmatured coupons appertaining
thereto, and (2) may apply as a credit Debt Securities of


                                      -68-
<PAGE>   77
a series which have been redeemed either at the election of the Company pursuant
to the terms of such Debt Securities or through the application of permitted
optional sinking fund payments pursuant to the terms of such Debt Securities, in
each case in satisfaction of all or any part of any sinking fund payment with
respect to the Debt Securities of such series required to be made pursuant to
the terms of such Debt Securities as provided for by the terms of such series;
provided that such Debt Securities have not been previously so credited. Such
Debt Securities shall be received and credited for such purpose by the Trustee
at the Redemption Price specified in such Debt Securities for redemption through
operation of the sinking fund and the amount of such sinking fund payment shall
be reduced accordingly. If as a result of the delivery or credit of Debt
Securities in lieu of cash payments pursuant to this Section 12.2, the principal
amount of Debt Securities to be redeemed in order to exhaust the aforesaid cash
payment shall be less than $100,000, the Trustee need not call Debt Securities
for redemption, except upon Company Request, and such cash payment shall be held
by the Trustee or a Paying Agent and applied to the next succeeding sinking fund
payment, provided, however, that the Trustee or such Paying Agent shall at the
request of the Company from time to time pay over and deliver to the Company any
cash payment so being held by the Trustee or such Paying Agent upon delivery by
the Company to the Trustee of Debt Securities purchased by the Company having an
unpaid principal amount equal to the cash payment requested to be released to
the Company.

            SECTION 12.3. Redemption of Debt Securities for Sinking Fund.

            Not less than 60 days prior to each sinking fund payment date for
any series of Debt Securities (unless a shorter period shall be satisfactory to
the Trustee), the Company will deliver to the Trustee an Officers' Certificate
specifying the amount of the next ensuing sinking fund payment for that series
pursuant to the terms of that series, the portion thereof, if any, which is to
be satisfied by payment of cash, the portion thereof, if any, which is to be
satisfied by crediting Debt Securities of that series pursuant to Section 12.2
and the basis for any such credit and, prior to or concurrently with the
delivery of such Officers' Certificate, will also deliver to the Trustee any
Debt Securities to be so credited and not theretofore delivered to the Trustee.
Not less than 30 days (unless a shorter period shall be satisfactory to the
Trustee) before each such sinking fund payment date the Trustee shall select the
Debt Securities to be redeemed upon such sinking fund payment date in the manner
specified in Section 11.3 and cause notice of the redemption thereof to be given
in the name of and at the expense of the Company in the manner provided in
Section 11.4. Such notice having been duly given, the redemption of such Debt
Securities shall be made upon the terms and in the manner stated in Sections
11.5, 11.6 and 11.7.

                                ARTICLE THIRTEEN

                       REPAYMENT AT THE OPTION OF HOLDERS


            SECTION 13.1. Applicability of Article.

            Debt Securities of any series which are repayable at the option of
the Holders thereof before their Stated Maturity shall be repaid in accordance
with their terms and (except as


                                      -69-
<PAGE>   78
otherwise specified pursuant to Section 3.1 for Debt Securities of such series)
in accordance with this Article.

            SECTION 13.2. Repayment of Debt Securities.

            Each Debt Security which is subject to repayment in whole or in part
at the option of the Holder thereof on a Repayment Date shall be repaid at the
applicable Repayment Price together with interest accrued to such Repayment Date
as specified pursuant to Section 3.1.

            SECTION 13.3. Exercise of Option; Notice.

            Each Holder desiring to exercise such Holder's option for repayment
shall, as conditions to such repayment, surrender the Debt Security to be repaid
in whole or in part together with written notice of the exercise of such option
at any office or agency of the Company in a Place of Payment, not less than 30
nor more than 45 days prior to the Repayment Date; provided, however, that
surrender of Bearer Securities together with written notice of exercise of such
option shall be made at an office or agency located outside the United States
except as otherwise provided in Section 10.2. Such notice, which shall be
irrevocable, shall specify the principal amount of such Debt Security to be
repaid, which shall be equal to the minimum authorized denomination for such
Debt Security or an integral multiple thereof, and shall identify the Debt
Security to be repaid and, in the case of a partial repayment of the Debt
Security, shall specify the denomination or denominations of the Debt Security
or Debt Securities of the same series to be issued to the Holder for the portion
of the principal of the Debt Security surrendered which is not to be repaid.

            If any Bearer Security surrendered for repayment shall not be
accompanied by all unmatured coupons and all matured coupons in default, such
Bearer Security may be paid after deducting from the Repayment Price an amount
equal to the face amount of all such missing coupons, or the surrender of such
missing coupon or coupons may be waived by the Company and the Trustee if there
be furnished to them such security or indemnity as they may require to save each
of them and any Paying Agent harmless. If thereafter the Holder of such Bearer
Security shall surrender to the Trustee or any Paying Agent any such missing
coupon in respect of which a deduction shall have been made from the Repayment
Price, such Holder shall be entitled to receive the amount so deducted without
interest thereon; provided, however, that interest represented by coupons shall
be payable only at an office or agency located outside the United States except
as otherwise provided in Section 10.2.

            The Company shall execute and the Trustee shall authenticate and
deliver without service charge to the Holder of any Registered Security so
surrendered a new Registered Security or Securities of the same series, of any
authorized denomination specified in the foregoing notice, in an aggregate
principal amount equal to any portion of the principal of the Registered
Security so surrendered which is not to be repaid.

            The Company shall execute and the Trustee shall authenticate and
deliver without service charge to the Holder of any Bearer Security so
surrendered a new Registered Security or Securities or new Bearer Security or
Securities (and all appurtenant unmatured coupons and ma-


                                      -70-
<PAGE>   79
tured coupons in default) or any combination thereof of the same series of any
authorized denomination or denominations specified in the foregoing notice, in
an aggregate principal amount equal to any portion of the principal of the Debt
Security so surrendered which is not to be paid; provided, however, that the
issuance of a Registered Security therefor shall be subject to applicable laws
and regulations, including provisions of the United States Federal income tax
laws and regulations in effect at the time of the exchange; neither the Company,
the Trustee nor the Security Registrar shall issue Registered Securities for
Bearer Securities if it has received an Opinion of Counsel that as a result of
such issuance the Company would suffer adverse consequences under the United
States Federal income tax laws then in effect and the Company has delivered to
the Trustee a Company Order directing the Trustee not to make such issuances
thereafter unless and until the Trustee receives a subsequent Company Order to
the contrary. The Company shall deliver copies of such Company Order to the
Security Registrar.

            For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the repayment of Debt Securities shall
relate, in the case of any Debt Security repaid or to be repaid only in part, to
the portion of the principal of such Debt Security which has been or is to be
repaid.

            SECTION 13.4. Election of Repayment by Remarketing Entities.

            The Company may elect, with respect to Debt Securities of any series
which are repayable at the option of the Holders thereof before their Stated
Maturity, at any time prior to any Repayment Date to designate one or more
Remarketing Entities to purchase, at a price equal to the Repayment Price, Debt
Securities of such series from the Holders thereof who give notice and surrender
their Debt Securities in accordance with Section 13.3.

            SECTION 13.5. Securities Payable on the Repayment Date.

            Notice of exercise of the option of repayment having been given and
the Debt Securities so to be repaid having been surrendered as aforesaid, such
Debt Securities shall, unless purchased in accordance with Section 13.4, on the
Repayment Date become due and payable at the price therein specified and from
and after the Repayment Date such Debt Securities shall cease to bear interest
and shall be paid on the Repayment Date, and the coupons for such interest
appertaining to Bearer Securities so to be repaid, except to the extent provided
above, shall be void, unless the Company shall default in the payment of such
price in which case the Company shall continue to be obligated for the principal
amount of such Debt Securities and shall be obligated to pay interest on such
principal amount at the rate borne by such Debt Securities from time to time
until payment in full of such principal amount.


                                      -71-
<PAGE>   80
                                ARTICLE FOURTEEN

                     MEETINGS OF HOLDERS OF DEBT SECURITIES


            SECTION 14.1. Purposes for Which Meetings May Be Called.

            If Debt Securities of a series are issuable in whole or in part as
Bearer Securities, a meeting of Holders of Debt Securities of such series may be
called at any time and from time to time pursuant to this Article to make, give
or take any request, demand, authorization, direction, notice, consent, waiver
or other Act provided by this Indenture to be made, given or taken by Holders of
Debt Securities of such series.

            SECTION 14.2. Call, Notice and Place of Meetings.

            (a) The Trustee may at any time call a meeting of Holders of Debt
Securities of any series issuable as Bearer Securities for any purpose specified
in Section 14.1, to be held at such time and at such place in the Borough of
Manhattan, The City of New York, or in London as the Trustee shall determine.
Notice of every meeting of Holders of Debt Securities of any series, setting
forth the time and the place of such meeting and in general terms the action
proposed to be taken at such meeting, shall be given, in the manner provided in
Section 1.6, not less than 21 no more than 180 days prior to the date fixed for
the meeting.

            (b) In case at any time the Company, pursuant to a Board Resolution,
or the Holders of at least 10% in principal amount of the Outstanding Debt
Securities of any series shall have requested the Trustee to call a meeting of
the Holders of Debt Securities of such series for any purpose specified in
Section 14.1, by written request setting forth in reasonable detail the action
proposed to be taken at the meeting, and the Trustee shall not have made the
first publication of the notice of such meeting within 21 days after receipt of
such request or shall not thereafter proceed to cause the meeting to be held as
provided herein, then the Company or the Holders of Debt Securities of such
series in the amount above specified, as the case may be, may determine the time
and the place in the Borough of Manhattan, The City of New York, or in London
for such meeting and may call such meeting for such purposes by giving notice
thereof as provided in subsection (a) of this Section.

            SECTION 14.3. Persons Entitled to Vote at Meetings.

            To be entitled to vote at any meeting of Holders of Debt Securities
of any series, a Person shall be (1) a Holder of one or more Outstanding Debt
Securities of such series, or (2) a Person appointed by an instrument in writing
as proxy for a Holder or Holders of one or more Outstanding Debt Securities of
such series by such Holder or Holders. The only Persons who shall be entitled to
be present or to speak at any meeting of Holders of Debt Securities of any
series shall be the Persons entitled to vote at such meeting and their counsel,
any representatives of the Trustee and its counsel and any representatives of
the Company and its counsel.


                                      -72-
<PAGE>   81
            SECTION 14.4. Quorum; Action.

            The Persons entitled to vote a majority in principal amount of the
Outstanding Debt Securities of a series shall constitute a quorum for a meeting
of Holders of Debt Securities of such series; provided, however, that if any
action is to be taken at such meeting with respect to a consent or waiver which
this Indenture expressly provides may be given by the Holders of not less than a
majority in principal amount of the Outstanding Debt Securities of a series, the
Persons entitled to vote a majority in principal amount of the Outstanding Debt
Securities of such series shall constitute a quorum. In the absence of a quorum
within 30 minutes of the time appointed for any such meeting, the meeting shall,
if convened at the request of Holders of Debt Securities of such series, be
dissolved. In the absence of a quorum in any other case the meeting may be
adjourned for a period of not less than 10 days as determined by the chairperson
of the meeting prior to the adjournment of such meeting. In the absence of a
quorum at any such adjourned meeting, such adjourned meeting may be further
adjourned for a period of not less than 10 days as determined by the chairperson
of the meeting prior to the adjournment of such adjourned meeting. Notice of
this reconvening of any adjourned meeting shall be given as provided in Section
14.2(a), except that such notice need be given only once not less than five days
prior to the date on which the meeting is scheduled to be reconvened. Notice of
the reconvening of an adjourned meeting shall state expressly the percentage, as
provided above, of the principal amount of the Outstanding Debt Securities of
such series which shall constitute a quorum.

            Except as limited by the proviso to Section 9.2, any resolution
presented to a meeting or adjourned meeting duly reconvened at which a quorum is
present as aforesaid may be adopted only by the affirmative vote of the Holders
of majority in principal amount of the Outstanding Debt Securities of that
series, provided however, that, except as limited by the proviso to Section 9.2,
any resolution with respect to any consent or waiver which this Indenture
expressly provides may be given by the Holders of not less than a majority in
principal amount of the Outstanding Debt Securities of a series may be adopted
at a meeting or an adjourned meeting duly reconvened and at which a quorum is
present as aforesaid only by the affirmative vote of the Holders of a majority
in principal amount of the Outstanding Debt Securities of that series; and
provided, further, that, except as limited by the proviso to Section 9.2, any
resolution with respect to any request, demand, authorization, direction,
notice, consent, waiver or other Act which this Indenture expressly provides may
be made, given or taken by the Holders of a specified percentage, which is less
than a majority, in principal amount of the Outstanding Debt Securities of a
series may be adopted at a meeting or an adjourned meeting duly reconvened and
at which a quorum is present as aforesaid by the affirmative vote of the Holders
of such specified percentage in principal amount of the Outstanding Debt
Securities of that series.

            Any resolution passed or decision taken at any meeting of Holders of
Debt Securities of any series duly held in accordance with this Section shall be
binding on all the Holders of Debt Securities of such series and the related
coupons, whether or not present or represented at the meeting.


                                      -73-
<PAGE>   82
            SECTION 14.5. Determination of Voting Rights; Conduct and
Adjournment of Meetings.

            (a) Notwithstanding any other provisions of this Indenture, the
Trustee may make such reasonable regulations as it may deem advisable for any
meeting of Holders of Debt Securities of such series in regard to proof of the
holding of Debt Securities of such series and of the appointment of proxies and
in regard to the appointment and duties of inspectors of votes, the submission
and examination of proxies, certificates and other evidence of the right to
vote, and such other matters concerning the conduct of the meeting as it shall
deem appropriate. Except as otherwise permitted or required by any such
regulations, the holding of Debt Securities shall be proved in the manner
specified in Section 1.4 and the appointment of any proxy shall be proved in the
manner specified in Section 1.4 or, in the case of Bearer Securities, by having
the signature of the person executing the proxy witnessed or guaranteed by any
trust company, bank or banker authorized by Section 1.4 to certify to the
holding of Bearer Securities. Such regulations may provide that written
instruments appointing proxies, regular on their face, may be presumed valid and
genuine without the proof specified in Section 1.4 or other proof.

            (b) The Trustee shall, by an instrument in writing, appoint a
temporary chairperson of the meeting, unless the meeting shall have been called
by the Company or by Holders of Debt Securities as provided in Section 14.2(b),
in which case the Company or the Holders of Debt Securities of the series
calling the meeting, as the case may be, shall in like manner appoint a
temporary chairperson. A permanent chairperson and a permanent secretary of the
meeting shall be elected by vote of the Persons entitled to vote a majority in
principal amount of the Outstanding Debt Securities of such series represented
at the meeting.

            (c) At any meeting each Holder of a Debt Security of such series or
proxy shall be entitled to one vote for each $1,000 principal amount (or the
equivalent in Euros, any other composite currency or a Foreign Currency) of Debt
Securities of such series held or represented by him; provided, however, that no
vote shall be cast or counted at any meeting in respect of any Debt Security
challenged as not Outstanding and ruled by the chairperson of the meeting not to
be Outstanding. The chairperson of the meeting shall have no right to vote,
except as a Holder of a Debt Security of such series or proxy.

            (d) Any meeting of Holders of Debt Securities of any series duly
called pursuant to Section 14.2 at which a quorum is present may be adjourned
from time to time by Persons entitled to vote a majority in principal amount of
the Outstanding Debt Securities of such series represented at the meeting; and
the meeting may be held as so adjourned without further notice.

            SECTION 14.6. Counting Votes and Recording Action of Meetings.

            The vote upon any resolution submitted to any meeting of Holders of
Debt Securities of any series shall be by written ballots on which shall be
subscribed the signatures of the Holders of Debt Securities of such series or of
their representatives by proxy and the principal amounts and serial numbers of
the Outstanding Debt Securities of such series held or represented by them. The
permanent chairperson of the meeting shall appoint two inspectors of votes who
shall count all votes cast at the meeting for or against any resolution and who
shall make and file


                                      -74-
<PAGE>   83
with the secretary of the meeting their verified written reports in triplicate
of all votes cast at the meeting. A record, at least in triplicate, of the
proceedings of each meeting of Holders of Debt Securities of any series shall be
prepared by the secretary of the meeting and there shall be attached to said
record the original reports of the inspectors of votes on any vote by ballot
taken thereat and affidavits by one or more persons having knowledge of the
facts setting forth a copy of the notice of the meeting and showing that said
notice was given as provided in Section 14.2 and, if applicable, Section 14.1.
Each copy shall be signed and verified by the affidavits of the permanent
chairperson and secretary of the meeting and one such copy shall be delivered to
the Company, and another to the Trustee to be preserved by the Trustee, the
latter to have attached thereto the ballots voted at the meeting. Any record so
signed and verified shall be conclusive evidence of the matters therein stated.

                                ARTICLE FIFTEEN

                                   DEFEASANCE


            SECTION 15.1. Termination of Company's Obligations.

            If this Section 15.1 is specified, as contemplated by Section 3.1,
to be applicable to any series of Debt Securities and if the Company deposits
irrevocably in trust with the Trustee money and/or, to the extent such Debt
Securities are denominated and payable in Dollars only, Eligible Instruments the
payments of principal and interest on which when due (and without reinvestment
and providing no tax liability will be imposed upon the Trustee or the Holders
of such Debt Securities) will provide money in such amounts as will (together
with any money irrevocably deposited in trust with the Trustee, without
investment) be sufficient to pay the principal of (and premium, if any) and any
installment of principal of (and premium, if any) or interest when due on the
Debt Securities of such series and any coupons appertaining thereto and any
mandatory sinking fund, repayment or analogous payments thereon on the scheduled
due dates therefor at the Stated Maturity thereof, the Company's obligations
under Section 10.5 and any other covenant determined pursuant to Section 3.1 to
be subject to this Section shall terminate with respect to the Debt Securities
of the series for which such deposit was made; provided, however, that (i) no
Event of Default with respect to the Debt Securities of such series under
Section 5.1(6) or 5.1(7) or event that with notice or lapse of time or both
would constitute such an Event of Default shall have occurred and be continuing
on such date, (ii) such deposit will not result in a breach of, or constitute a
default under, this Indenture or any other agreement or instrument to which the
Company is a party or by which it is bound, and (iii) such termination shall not
relieve the Company of its obligations under the Debt Securities of such series
and this Indenture to pay when due the principal of (and premium, if any) and
interest and additional amounts on such Debt Securities and any coupons
appertaining thereto if such Debt Securities or coupons are not paid (or payment
is not provided for) when due from the money and Eligible Instruments (and the
proceeds thereof) so deposited.

            It shall be a condition to the deposit of cash and/or Eligible
Instruments and the termination of the Company's obligations pursuant to the
provisions of this Section with respect to the Debt Securities of any series
under Section 10.5 and any other covenant determined pursu-


                                      -75-
<PAGE>   84
ant to Section 3.1 to be subject to this Section that the Company deliver to the
Trustee (i) an Opinion of Counsel to the effect that: (a) Holders of Debt
Securities of such series and any coupons appertaining thereto will not
recognize income, gain or loss for Federal income tax purposes as a result of
such deposit and termination and (b) such Holders (and future Holders) will be
subject to tax in the same amount, manner and timing as if such deposit and
termination has not occurred, (ii) an Officers' Certificate to the effect that
under the laws in effect on the date such money and/or Eligible Instruments are
deposited with the Trustee, the amount thereof will be sufficient, after payment
of all Federal, state and local taxes in respect thereof payable by the Trustee,
to pay principal (and premium, if any) and interest when due on the Debt
Securities of such series and any coupons appertaining thereto; and (iii) an
Officers' Certificate and an Opinion of Counsel, each stating that all
conditions precedent herein provided for relating to the defeasance contemplated
in this Section have been complied with.

            It shall be an additional condition to the deposit of cash and/or
Eligible Instruments and the termination of the Company's obligations pursuant
to the provisions of this Section under Section 10.5 and any other covenant
determined pursuant to Section 3.1 to be subject to this Section, with respect
to the Debt Securities of any series then listed on the New York Stock Exchange,
that the Company deliver an Opinion of Counsel that the Debt Securities of such
series will not be delisted from the New York Stock Exchange as a result of such
deposit and termination.

            After a deposit as provided herein, the Trustee shall, upon Company
Request, acknowledge in writing the discharge of the Company's obligations
pursuant to the provisions of this Section with respect to the Debt Securities
of such series under Section 10.5 and any other covenant determined pursuant to
Section 3.1 to be subject to this Section.

            SECTION 15.2. Repayment to Company.

            The Trustee and any Paying Agent shall promptly pay to the Company
upon Company Request any money or Eligible Instruments not required for the
payment of the principal of (and premium, if any) and interest on the Debt
Securities of any series and any related coupons for which money or Eligible
Instruments have been deposited pursuant to Section 15.1 held by them at any
time.

            The Trustee and any Paying Agent shall promptly pay to the Company
upon Company Request any money held by them for the payment of principal (and
premium, if any) and interest that remains unclaimed for two years after the
Maturity of the Debt Securities for which a deposit has been made pursuant to
Section 15.1. After such payment to the Company, the Holders of the Debt
Securities of such series and any related coupons shall thereafter, as unsecured
general creditors, look only to the Company for the payment thereof.

            SECTION 15.3. Indemnity for Eligible Instruments.

            The Company shall pay and shall indemnify the Trustee against any
tax, fee or other charge imposed on or assessed against the deposited Eligible
Instruments or the principal or interest received on such Eligible Instruments.


                                      -76-
<PAGE>   85
            IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.

                               FIRSTAR CORPORATION

                               By____________________________________
                                 Its_________________________________

[CORPORATE SEAL]

Attest:

____________________________________
Secretary



                               ____________________________________
                               AS TRUSTEE


                               By____________________________________
                               Name:
                               Its


[CORPORATE SEAL]

Attest:

____________________________________
Authorized Signatory


                                      -77-
<PAGE>   86
STATE OF WISCONSIN  )
                    )  SS.
COUNTY OF ________  )


            On the ____ day of _________, ____, before me personally came
________________, to me known, who, being duly sworn, did depose and say that he
resides at _______________________ ___________; that he is a
_____________________ of Firstar Corporation, a corporation described in and
which executed the above instrument; that he knows the seal of said corporation;
that it was so affixed pursuant to the authority of the Board of Directors of
said corporation; and that he signed his name thereto pursuant to like
authority.


                              ____________________________________
                              Notary Public


                                      -78-
<PAGE>   87
__________________  )
                    ) SS.
__________________  )


            On the ____ day of _________, 1999, before me personally came
_________, to me known, who, being duly sworn, did depose and say that she
resides at __________; that she is a Vice President of _____________, a ________
banking association described in and which executed the above instrument; that
she knows the seal of said corporation; that it was so affixed pursuant to the
authority of the Board of Directors of said corporation; and that she signed
her name thereto pursuant to like authority.


                              ____________________________________
                              Notary Public


                                      -79-
<PAGE>   88
                                                                     EXHIBIT A-1


                [Form of Certificate of Beneficial Ownership by a
              Non-United States Person or by Certain Other Persons]

                                   Certificate

                               FIRSTAR CORPORATION

                   [Insert title or sufficient description of
                        Debt Securities to be delivered]

            Reference is hereby made to the Indenture dated as of _______, 1999
(the "Indenture") between Firstar Corporation and _____________, as trustee (the
"Trustee"), covering the above-captioned Debt Securities. This is to certify
that as of the date hereof, _________________ principal amount of Debt
Securities credited to you for our account (i) is owned by persons that are not
United States Persons, as defined below; (ii) is owned by United States Persons
that are (a) foreign branches of United States financial institutions (as
defined in U.S. Treasury Regulations Section 1.165-12(c)(1)(v)) ("financial
institutions") purchasing for their own account or for resale, or (b) United
States Persons who acquired the Debt Securities through foreign branches of
United States financial institutions and who hold the Debt Securities through
such United States financial institutions on the date hereof (and in either case
(a) or (b), each such United States financial institution encloses herewith a
certificate in the form of Exhibit A-2 to the Indenture); or (iii) is owned by
United States or foreign financial institutions for purposes of resale during
the restricted period (as defined in U.S. Treasury Regulations Section
1.163-5(c)(2)(i)(D)(7)), which United States or foreign financial institutions
described in clause (iii) above (whether or not also described in clause (i) or
(ii)) certify that they have not acquired the Debt Securities for purposes of
resale directly or indirectly to a United States Person or to a person within
the United States or its possessions.

            [Insert if certificate does not relate to an interest payment--We
undertake to advise you by tested telex followed by written confirmation if the
above statement as to beneficial ownership is not correct on the date of
delivery of the above-captioned Debt Securities in bearer form as to all of such
Debt Securities with respect to such of said Debt Securities as then appear in
your books as being held for our account.] We understand that this certificate
is required in connection with United States tax laws. We irrevocably authorize
you to produce this certificate or a copy hereof to any interested party in any
administrative or legal proceedings with respect to the matters covered by this
certificate. "United States Person" shall mean a citizen or resident of the
United States of America (including the District of Columbia), a corporation,
partnership or other entity created or organized in or under the laws of the
United States or any political subdivision thereof or an estate or trust that is
subject to United States Federal income taxation regardless of the source of its
income.

            [This certificate excepts and does not relate to __________
principal amount of Debt Securities credited to you for our account and to which
we are not now able to make the certification set forth above. We understand
that definitive Debt Securities cannot be delivered


                                      -80-
<PAGE>   89
and interest cannot be paid until we are able to so certify with respect to such
principal amount of Debt Securities.]*

Dated:_______________________

[To be dated on or after
____________ (the date
determined as provided in the
Indenture)]



                              [Name of Person Entitled to Receive
                              Bearer Security]


                              ____________________________________
                              (Authorized Signatory)

                              Name:_______________________________
                              Title:______________________________


* Delete if inappropriate


                                      -81-
<PAGE>   90
                                                                     EXHIBIT A-2


                       [Form of Certificate of Status as a
            Foreign Branch of a United States Financial Institution]

                                   Certificate

                               FIRSTAR CORPORATION

                   [Insert title or sufficient description of
                        Debt Securities to be delivered]

            Reference is hereby made to the Indenture dated as of ________ __,
1999 (the "Indenture"), between Firstar Corporation and _____________, as
trustee, relating to the offering of the above-captioned Debt Securities (the
"Debt Securities"). Unless herein defined, terms used herein have the same
meaning as given to them in the Indenture.

            The undersigned represents that it is a branch located outside the
United States of a United States securities clearing organization, bank or other
financial institution (as defined in U.S. Treasury Regulation Section
1.165-12(c)(1)(v)) that holds customers' securities in the ordinary course of
its trade or business and agrees, and authorizes you to advise the issuer or the
issuer's agent, that it will comply with the requirements of Section
165(j)(3)(A), (B) or (C) of the Internal Revenue Code of 1986 and the
regulations thereunder and is not purchasing for resale directly or indirectly
to a United States Person or to a person within the United States or its
possessions. We undertake to advise you by tested telex followed by written
confirmation if the statement in the immediately preceding sentence is not
correct on the date of delivery of the above-captioned Debt Securities in bearer
form.

            We understand that this certificate is required in connection with
the United States tax laws. We irrevocably authorize you to produce this
certificate or a copy hereof to any interested party in any administrative or
legal proceedings with respect to the matters covered by this certificate.

Dated:_____________________
[To be dated on or after
________________ (the
date determined as provided
in the Indenture)]

                              [Name of Person Entitled to Receive
                              Bearer Security]


                              ____________________________________
                              (Authorized Signatory)

                              Name:_______________________________
                              Title:______________________________


                                      -82-
<PAGE>   91
                                                                       EXHIBIT B



          [Form of Certificate to be Given by Euroclear and Cedel S.A.
            in Connection with the Exchange of All or a Portion of a
                     Temporary Global Security or to Obtain
                           Interest Prior to Exchange]

                                   Certificate

                               FIRSTAR CORPORATION

           [Insert title or sufficient description of Debt Securities
                                to be delivered]

            We refer to that portion, _____________, of the Global Security
representing the above-captioned issue [which is herewith submitted to be
exchanged for definitive Debt Securities]* [for which we are seeking to obtain
payment of interest]* (the "Submitted Portion"). This is to certify, pursuant to
the Indenture dated as of ______ __, 1999 (the "Indenture") between Firstar
Corporation and _____________, as trustee (the "Trustee"), that we have received
in writing, by tested telex or by electronic transmission from member
organizations with respect to each of the persons appearing in our records as
being entitled to a beneficial interest in the Submitted Portion a Certificate
of Beneficial Ownership by a Non-United States Person or by Certain Other
Persons [and, in some cases, a Certificate of Status as a Foreign Branch of a
United States Financial Institution, authorizing us to inform the issuer or the
issuer's agent that it will comply with the requirements of Section
165(j)(3)(A), (B) or (C) of the Internal Revenue Code of 1986 and the
regulations thereunder]* substantially in the form of Exhibit A-1 [and A-2]* to
the Indenture.

            We hereby request that you deliver to the office of _______________
in ______________ definitive Bearer Securities in the denominations on the
attached Schedule A.

            We further certify that as of the date hereof we have not received
any notification from any of the persons giving such certificates to the effect
that the statements made by them with respect to any part of the Submitted
Portion are no longer true and cannot be relied on as of the date hereof.

Dated:________________




                              By:______________________________

* Delete if inappropriate.


                                      -83-


<PAGE>   1
                                                                     Exhibit 4.5


                             FIRSTAR CORPORATION
                                      TO

                               ----------------

                                   TRUSTEE



                               ---------------

                                  INDENTURE

                          DATED AS OF ________, 1999

                               ---------------

                         SUBORDINATED DEBT SECURITIES
<PAGE>   2
                               FIRSTAR CORPORATION

               RECONCILIATION AND TIE BETWEEN TRUST INDENTURE ACT
               OF 1939 AND INDENTURE, DATED AS OF _______________

<TABLE>
<S>                                                        <C>
TRUST INDENTURE ACT SECTION                                INDENTURE SECTION
Section 310 (a) (1) ...............................               6.9
           (a) (2) ................................               6.9
           (a) (3) ................................          Not Applicable
           (a) (4) ................................          Not Applicable
           (a) (5) ................................               6.9
           (b) ....................................            6.8, 6.10
           (c) ....................................          Not Applicable
Section 311 (a) ...................................               6.13
           (b) ....................................               6.13
Section 312 (a) ...................................           7.1, 7.2 (a)
           (b) ....................................             7.2 (b)
           (c) ....................................             7.2 (c)
Section 313 (a) ...................................             7.3 (a)
           (b) ....................................             7.3 (a)
           (c) ....................................             7.3 (a)
           (d) ....................................             7.3 (b)
Section 314 (a) ...................................            7.3, 10.4
           (b) ....................................          Not Applicable
           (c) (1) ................................               1.2
           (c) (2) ................................               1.2
           (c) (3) ................................          Not Applicable
           (d) ....................................          Not Applicable
           (e) ....................................               1.2
Section 315 (a) ...................................               6.1
           (b) ....................................               6.2
           (c) ....................................               6.1
           (d) ....................................               6.1
           (e) ....................................               5.14
Section 316 (a) ...................................               1.1
           (a) (1) (A) ............................        1.4 (h), 5.2, 5.12
           (a) (1) (B) ............................          1.4 (h), 5.13
           (a) (2) ................................          Not Applicable
           (b) ....................................               5.8
           (c) ....................................             1.4 (h)
Section 317 (a) (1) ...............................               5.3
           (a) (2) ................................               5.4
           (b) ....................................               10.3
Section 318 (a) ...................................               1.7
           (c) ....................................               1.7
</TABLE>

- -------------

NOTE: THIS RECONCILIATION AND TIE SHALL NOT, FOR ANY PURPOSE, BE DEEMED TO BE
PART OF THE INDENTURE.
<PAGE>   3
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
Parties........................................................................................     1
Recitals.......................................................................................     1

                                   ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

SECTION 1.1.     Definitions...................................................................     1
                 Act ..........................................................................     2
                 Affiliate.....................................................................     2
                 Authorized Newspaper..........................................................     2
                 Bearer Security...............................................................     2
                 Board of Directors............................................................     2
                 Board Resolution..............................................................     2
                 Business Day..................................................................     2
                 Capital Exchange Agent........................................................     3
                 Capital Exchange Date.........................................................     3
                 Capital Exchange Price........................................................     3
                 Capital Securities............................................................     3
                 Capital Security Election Form................................................     3
                 CEDEL or CEDEL S.A............................................................     3
                 Closing Price.................................................................     3
                 Commission....................................................................     3
                 Common Stock..................................................................     3
                 Company.......................................................................     4
                 Company Request and Company Order.............................................     4
                 Conversion Price..............................................................     4
                 Convertible Securities........................................................     4
                 Corporate Trust Office........................................................     4
                 corporation...................................................................     4
                 coupon........................................................................     4
                 Debt Securities...............................................................     4
                 Default.......................................................................     4
                 Defaulted Interest............................................................     4
                 Depositary....................................................................     4
                 Designated Currency...........................................................     4
                 Dollar or $...................................................................     4
                 Eligible Instruments..........................................................     5
                 Euro..........................................................................     5
                 Euroclear.....................................................................     5
                 Event of Default..............................................................     5
                 Exchange Rate.................................................................     5
</TABLE>
<PAGE>   4
<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
                 Exchange Rate Agent...........................................................     5
                 Exchange Rate Officer's Certificate...........................................     5
                 Foreign Currency..............................................................     5
                 Global Exchange Agent.........................................................     5
                 Global Exchange Date..........................................................     5
                 Global Security...............................................................     5
                 Holder........................................................................     5
                 Indenture.....................................................................     5
                 interest......................................................................     5
                 Interest Payment Date.........................................................     6
                 Market Value..................................................................     6
                 Maturity......................................................................     6
                 Officers' Certificate.........................................................     6
                 Opinion of Counsel............................................................     6
                 Optional Securities Fund......................................................     6
                 Original Issue Discount Security..............................................     6
                 Outstanding...................................................................     6
                 Paying Agent..................................................................     7
                 Perpetual Preferred Stock.....................................................     7
                 Person........................................................................     7
                 Place of Capital Exchange.....................................................     8
                 Place of Payment..............................................................     8
                 Predecessor Security..........................................................     8
                 Primary Federal Regulator.....................................................     8
                 Redemption Date...............................................................     8
                 Redemption Price..............................................................     8
                 Registered Security...........................................................     8
                 Regular Record Date...........................................................     8
                 Remarketing Entity............................................................     8
                 Repayment Date................................................................     8
                 Repayment Price...............................................................     8
                 Responsible Officer...........................................................     8
                 Rights........................................................................     8
                 Secondary Offering............................................................     9
                 Securities Fund...............................................................     9
                 Security Register and Security Registrar......................................     9
                 Senior Debt...................................................................     9
                 Special Record Date...........................................................     9
                 Stated Maturity...............................................................     9
                 Trust Indenture Act...........................................................     9
                 Trustee.......................................................................     9
                 United States.................................................................     9
                 United States Alien...........................................................     9
</TABLE>


                                      -ii-
<PAGE>   5
<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
                 U.S. Government Obligations...................................................     10
SECTION 1.2.     Compliance Certificates and Opinions..........................................     10
SECTION 1.3.     Form of Documents Delivered to Trustee........................................     10
SECTION 1.4.     Acts of Holders...............................................................     11
SECTION 1.5.     Notices, etc., to Trustee and Company.........................................     13
SECTION 1.6.     Notice to Holders; Waiver.....................................................     13
SECTION 1.7.     Conflict with Trust Indenture Act.............................................     14
SECTION 1.8.     Effect of Headings and Table of Contents......................................     14
SECTION 1.9.     Successors and Assigns........................................................     14
SECTION 1.10.    Separability Clause...........................................................     14
SECTION 1.11.    Benefits of Indenture.........................................................     14
SECTION 1.12.    Governing Law.................................................................     15
SECTION 1.13.    Legal Holidays................................................................     15
SECTION 1.14.    Counterparts..................................................................     15

                                   ARTICLE TWO

                               DEBT SECURITY FORMS

SECTION 2.1.     Forms Generally...............................................................     15
SECTION 2.2.     Form of Trustee's Certificate of Authentication...............................     16
SECTION 2.3.     Debt Securities in Global Form................................................     16

                                  ARTICLE THREE

                               THE DEBT SECURITIES

SECTION 3.1.     Amount Unlimited; Issuance in Series..........................................     17
SECTION 3.2.     Denominations.................................................................     20
SECTION 3.3.     Execution, Authentication, Delivery and Dating................................     21
SECTION 3.4.     Temporary Debt Securities.....................................................     23
SECTION 3.5.     Registration; Registration of Transfer and Exchange...........................     26
SECTION 3.6.     Mutilated, Destroyed, Lost and Stolen Debt Securities.........................     30
SECTION 3.7.     Payment of Interest; Interest Rights Preserved................................     32
SECTION 3.8.     Persons Deemed Owners.........................................................     33
SECTION 3.9.     Cancellation..................................................................     33
SECTION 3.10.    Computation of Interest.......................................................     34
SECTION 3.11.    Certification by a Person Entitled to Delivery of a Bearer Security...........     34
SECTION 3.12.    Judgments.....................................................................     34

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE
</TABLE>


                                     -iii-
<PAGE>   6
<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
SECTION 4.1.     Satisfaction and Discharge of Indenture.......................................     35
SECTION 4.2.     Application of Trust Money and Eligible Instruments...........................     36
SECTION 4.3.     Satisfaction, Discharge and Defeasance of Debt Securities of any Series.......     37

                                  ARTICLE FIVE

                                    REMEDIES

SECTION 5.1.     Events of Default.............................................................     39
SECTION 5.2.     Acceleration of Maturity; Rescission and Annulment............................     40
SECTION 5.3.     Collection of Indebtedness and Suits for Enforcement by Trustee...............     41
SECTION 5.4.     Trustee May File Proofs of Claim..............................................     42
SECTION 5.5.     Trustee May Enforce Claims Without Possession of Debt Securities or
                    Coupons....................................................................     43
SECTION 5.6.     Application of Money Collected................................................     43
SECTION 5.7.     Limitation on Suits...........................................................     44
SECTION 5.8.     Unconditional Right of Holders to Receive Principal, Premium and Interest
                    and to Exchange Debt Securities for Capital Securities.....................     44
SECTION 5.9.     Restoration of Rights and Remedies............................................     45
SECTION 5.10.    Rights and Remedies Cumulative................................................     45
SECTION 5.11.    Delay or Omission Not Waiver..................................................     45
SECTION 5.12.    Control by Holders of Debt Securities.........................................     45
SECTION 5.13.    Waiver of Past Defaults.......................................................     46
SECTION 5.14.    Undertaking for Costs.........................................................     46
SECTION 5.15.    Waiver of Stay or Extension Laws..............................................     46

                                   ARTICLE SIX

                                   THE TRUSTEE

SECTION 6.1.     Certain Duties And Responsibilities...........................................     47
SECTION 6.2.     Notice of Default.............................................................     47
SECTION 6.3.     Certain Rights of Trustee.....................................................     47
SECTION 6.4.     Not Responsible for Recitals or Issuance of Debt Securities...................     48
SECTION 6.5.     May Hold Debt Securities or Coupons...........................................     49
SECTION 6.6.     Money Held in Trust...........................................................     49
SECTION 6.7.     Compensation and Reimbursement................................................     49
SECTION 6.8.     Disqualification; Conflicting Interests.......................................     50
SECTION 6.9.     Corporate Trustee Required; Eligibility.......................................     50
SECTION 6.10.    Resignation and Removal; Appointment of Successor.............................     50
SECTION 6.11.    Acceptance of Appointment by Successor........................................     52
</TABLE>


                                      -iv-
<PAGE>   7
<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
SECTION 6.12.    Merger, Conversion, Consolidation or Succession to Business...................     53
SECTION 6.13.    Preferential Collection of Claims Against Company.............................     53
SECTION 6.14.    Authenticating Agent..........................................................     54

                                  ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 7.1.     Company to Furnish Trustee Names and Addresses of Holders.....................     55
SECTION 7.2.     Preservation of Information; Communications to Holders........................     55
SECTION 7.3.     Reports by Trustee............................................................     56
SECTION 7.4.     Reports by Company............................................................     56

                                  ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 8.1.     Company May Consolidate, etc.  Only on Certain Terms..........................     56
SECTION 8.2.     Successor Corporation Substituted.............................................     57

                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

SECTION 9.1.     Supplemental Indentures without Consent of Holders............................     57
SECTION 9.2.     Supplemental Indentures with Consent of Holders...............................     59
SECTION 9.3.     Execution of Supplemental Indentures..........................................     60
SECTION 9.4.     Effect of Supplemental Indentures.............................................     60
SECTION 9.5.     Conformity with Trust Indenture Act...........................................     61
SECTION 9.6.     Reference in Debt Securities to Supplemental Indentures.......................     61

                                   ARTICLE TEN

                                    COVENANTS

SECTION 10.1.    Payment of Principal, Premium and Interest....................................     61
SECTION 10.2.    Maintenance of Office or Agency...............................................     61
SECTION 10.3.    Money for Debt Securities Payments to Be Held in Trust........................     63
SECTION 10.4.    Officers' Certificate as to Default...........................................     64
SECTION 10.5.    Existence.....................................................................     64
SECTION 10.6.    Waiver of Certain Covenants...................................................     64
SECTION 10.7.    Payment of Additional Amounts.................................................     65
</TABLE>


                                      -V-
<PAGE>   8
<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
                                 ARTICLE ELEVEN

                          REDEMPTION OF DEBT SECURITIES

SECTION 11.1.    Applicability of Article......................................................     66
SECTION 11.2.    Election to Redeem; Notice to Trustee.........................................     66
SECTION 11.3.    Selection by Trustee of Debt Securities to be Redeemed........................     66
SECTION 11.4.    Notice of Redemption..........................................................     67
SECTION 11.5.    Deposit of Redemption Price...................................................     67
SECTION 11.6.    Debt Securities Payable on Redemption Date....................................     68
SECTION 11.7.    Debt Securities Redeemed in Part..............................................     68

                                 ARTICLE TWELVE

                                  SINKING FUNDS

SECTION 12.1.    Applicability of Article......................................................     69
SECTION 12.2.    Satisfaction of Sinking Fund Payments with Debt Securities....................     69
SECTION 12.3.    Redemption of Debt Securities for Sinking Fund................................     70

                                ARTICLE THIRTEEN

                       REPAYMENT AT THE OPTION OF HOLDERS

SECTION 13.1.    Applicability of Article......................................................     70
SECTION 13.2.    Repayment of Debt Securities..................................................     70
SECTION 13.2.    Exercise of Option; Notice....................................................     70
SECTION 13.4.    Election of Repayment by Remarketing Entities.................................     72
SECTION 13.5.    Securities Payable on the Repayment Date......................................     72

                                ARTICLE FOURTEEN

               EXCHANGE OF CAPITAL SECURITIES FOR DEBT SECURITIES

SECTION 14.1.    Applicability of Article......................................................     72
SECTION 14.2.    Exchange of Capital Securities for Debt Securities at Stated Maturity.........     72
SECTION 14.3.    Right of Early Exchange of Capital Securities for Debt Securities.............     73
SECTION 14.4.    Notices of Exchange...........................................................     74
SECTION 14.5.    Rights and Duties of Holders of Debt Securities to be Exchanged for
                    Capital Securities.........................................................     76
SECTION 14.6.    Election to Exchange..........................................................     77
SECTION 14.7.    Deposit of Capital Exchange Price.............................................     77
</TABLE>


                                      -vi-
<PAGE>   9
<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
SECTION 14.8.    Debt Securities Due on Capital Exchange Date; Debt Securities Exchanged
                    in Part....................................................................     78
SECTION 14.9.    Form of Capital Security Election Form........................................     79
SECTION 14.10.   Fractional Capital Securities.................................................     80
SECTION 14.11.   Company to Obtain Governmental and Regulatory Approvals.......................     80
SECTION 14.12.   Taxes on Exchange.............................................................     81
SECTION 14.13.   Covenants as to Capital Securities and Secondary Offering.....................     81
SECTION 14.14.   Provision in Case of Consolidation, Merger or Transfer of Assets..............     81
SECTION 14.15.   Responsibility of Trustee.....................................................     82
SECTION 14.16.   Revocation of Obligation to Exchange Capital Securities for Debt
                    Securities.................................................................     82
SECTION 14.17.   Optional Securities Funds.....................................................     83

                                 ARTICLE FIFTEEN

                                SECURITIES FUNDS

SECTION 15.1.    Creation of Securities Funds..................................................     84
SECTION 15.2.    Designations of Securities Funds..............................................     84
SECTION 15.3.    Covenant of the Company to Obtain Securities Funds............................     84

                                 ARTICLE SIXTEEN

                     MEETINGS OF HOLDERS OF DEBT SECURITIES

SECTION 16.1.    Purposes For Which Meetings May Be Called.....................................     85
SECTION 16.2.    Call, Notice and Place of Meetings............................................     85
SECTION 16.3.    Persons Entitled to Vote at Meetings..........................................     86
SECTION 16.4.    Quorum; Action................................................................     86
SECTION 16.5.    Determination of Voting Rights; Conduct and Adjournment of Meetings...........     87
SECTION 16.6.    Counting Votes and Recording Action of Meetings...............................     88

                                ARTICLE SEVENTEEN

                                   DEFEASANCE

SECTION 17.1.    Termination of Company's Obligations..........................................     89
SECTION 17.2.    Repayment to Company..........................................................     90
SECTION 17.3.    Indemnity for Eligible Instruments............................................     90
</TABLE>


                                     -vii-


<PAGE>   10
<TABLE>
<CAPTION>
                                                                                                   PAGE
                                                                                                   ----
<S>                                                                                                <C>
                                ARTICLE EIGHTEEN

                        SUBORDINATION OF DEBT SECURITIES

SECTION 18.1.    Debt Securities Subordinate to Senior Debt....................................      90
SECTION 18.2.    Trustee and Holders of Debt Securities May Rely on Certificate of
                    Liquidating Agent; Trustee May Require Further Evidence as to
                    Ownership of Senior Debt; Trustee Not Fiduciary to Holders of Senior
                    Debt.......................................................................      93
SECTION 18.3.    Payment Permitted if No Default...............................................      93
SECTION 18.4.    Trustee Not Charged with Knowledge of Prohibition.............................      94
SECTION 18.5.    Trustee to Effectuate Subordination...........................................      94
SECTION 18.6.    Rights of Trustee as Holder of Senior Debt....................................      94
SECTION 18.7.    Article Applicable to Paying Agents...........................................      94
SECTION 18.8.    Subordination Rights Not Impaired by Acts or Omissions of the Company or
                    Holders of Senior Debt.....................................................      95

                                ARTICLE NINETEEN

                      CONVERSION OF CONVERTIBLE SECURITIES

SECTION 19.1.    Applicability of Article......................................................      95
SECTION 19.2.    Right to Convert..............................................................      95
SECTION 19.3.    Exercise of Conversion Privilege; Delivery of Common Stock on Conversion;
                    No Adjustment for Interest or Dividends....................................      96
SECTION 19.4.    Cash Payments in Lieu of Fractional Shares....................................      97
SECTION 19.5.    Conversion Price..............................................................      97
SECTION 19.6.    Adjustment to Conversion Price................................................      97
SECTION 19.7.    Effect of Reclassification, Consolidation, Merger or Sale.....................     101
SECTION 19.8.    Taxes on Shares Issued........................................................     101
SECTION 19.9.    Shares to be Fully Paid; Compliance with Governmental Requirements;
                    Listing of Common Stock....................................................     102
SECTION 19.10.   Responsibility of Trustee.....................................................     102
SECTION 19.11.   Notice to Holders Prior to Certain Actions....................................     102
SECTION 19.12.   Covenant to Reserve Shares....................................................     103
</TABLE>


            Exhibit AA-1

            Exhibit BB-1


                                     -viii-
<PAGE>   11
            INDENTURE (the "Indenture") dated as of ________, 1999, between
FIRSTAR CORPORATION, a Wisconsin corporation (hereinafter called the "Company"),
having its principal place of business at 777 East Wisconsin Avenue, Milwaukee,
Wisconsin 53202 and ________________, a _________banking association
(hereinafter called the "Trustee"), having its Corporate Trust Office at
_________________________.

                           RECITALS OF THE COMPANY

            The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its subordinated
debentures, notes, bonds and other evidences of indebtedness (herein called the
"Debt Securities").

            All things necessary have been done to make this Indenture a valid
agreement of the Company, in accordance with its terms.

            NOW, THEREFORE, THIS INDENTURE WITNESSETH:

            For and in consideration of the premises and the purchase of the
Debt Securities of any series created and issued on or after the date hereof by
the Holders thereof, it is mutually covenanted and agreed for the equal and
proportionate benefit of all Holders of such Debt Securities or of any such
series, as follows:


                                   ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

            SECTION 1.1. Definitions.

            For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

            (1) the terms defined in this Article have the meanings assigned to
      them in this Article, and include the plural as well as the singular;

            (2) all other terms used herein which are defined in the Trust
      Indenture Act or by Commission rule or regulation under the Trust
      Indenture Act, either directly or by reference therein, as in force at the
      date as of which this instrument was exercised, except as provided in
      Section 9.5, have the meanings assigned to them therein;

            (3) all accounting terms not otherwise defined herein have the
      meanings assigned to them in accordance with generally accepted accounting
      principles, and, except as otherwise herein expressly provided, the term
      "generally accepted accounting principles" with respect to any computation
      required or permitted hereunder shall mean such accounting principles as
      are generally accepted in the United States at the date of such
      computation; and
<PAGE>   12
            (4) the words "herein", "hereof" and "hereunder" and other words of
      similar import refer to this Indenture as a whole and not to any
      particular Article, Section or other subdivision.

            "Act" when used with respect to any Holder has the meaning specified
in Section 1.4.

            "Affiliate" of any specified Person means any other Person directly
or indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities by contract or otherwise, and
the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

            "Authorized Newspaper" means a newspaper in an official language of
the country of publication or in the English language customarily published on
each Business Day, whether or not published on Saturdays, Sundays or holidays,
and of general circulation in the place in connection with which the term is
used or in the financial community of such place. Where successive publications
are required to be made in Authorized Newspapers, the successive publications
may be made in the same or in different newspapers in the same city meeting the
foregoing requirements and in each case on any Business Day.

            "Bearer Security" means any Debt Security established pursuant to
Section 2.1 which is payable to bearer including, without limitation, unless the
context otherwise indicates, a Debt Security in global bearer form.

            "Board of Directors" means either the board of directors of the
Company, or the executive or any other committee of that board duly authorized
to act in respect hereof.

            "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee. Where any provision of this
Indenture refers to action to be taken pursuant to a Board Resolution (including
the establishment of any series of the Debt Securities and the forms and terms
thereof), such action may be taken by any committee of the Board or the Company
or any officer or employee of the Company authorized to take such action by a
Board Resolution.

            "Business Day" with respect to any Debt Security means any day,
other than a Saturday or Sunday, that is not a legal holiday or a day on which
banking institutions are authorized or obligated by law or executive order to be
closed in (a) the City of New York or (b) if the Designated Currency for a Debt
Security is a Foreign Currency, the financial center of the country issuing such
Designated Currency (which, in the case of Euros, shall be Brussels, Belgium).
If the interest rate of the Debt Security is based on LIBOR, "Business Day"
means any day on which dealings in deposits in the Designated Currency of such
Debt Security are transacted in the London interbank market.


                                      -2-
<PAGE>   13
            "Capital Exchange Agent" means the Person or Persons appointed by
the Company to give notices and to exchange Debt Securities of any series for
Capital Securities as specified in Article Fourteen.

            "Capital Exchange Date", when used with respect to the Debt
Securities of any series, means any date on which such Debt Securities are to be
exchanged for Capital Securities pursuant to this Indenture.

            "Capital Exchange Price", when used with respect to any Debt
Security of any series to be exchanged for Capital Securities, means the amount
of Capital Securities for which such Debt Security is to be exchanged pursuant
to this Indenture or the aggregate sale price of such Capital Securities in the
Secondary Offering for such Debt Security, as the case may be.

            "Capital Securities" means any securities issued by the Company
which consist of any of the following: (i) Common Stock, (ii) Perpetual
Preferred Stock or (iii) securities which at the date of issuance may be issued
in exchange for, or the proceeds from the sale of which may be designated as
Securities Funds or Optional Securities Funds for the payment of the principal
of, "mandatory convertible securities" under applicable regulations of the
Primary Federal Regulator. Capital Securities may have such terms, rights and
preferences as may be determined by the Company.

            "Capital Security Election Form" means a form substantially in the
form included in Section 14.9.

            "CEDEL" or "CEDEL S.A." means Centrale de Livraison de Valeurs
Mobilieres S.A.

            "Closing Price" has the meaning specified in Section 19.6(d).

            "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under the Securities Exchange Act of 1934, or
if at any time after the execution of this instrument such Commission is not
existing and performing the duties now assigned to it under the Trust Indenture
Act, then the body performing such duties on such date.

            "Common Stock" means, when used with reference to the capital stock
of the Company, the class of stock which, at the date of execution of this
Indenture, is designated as common stock of the Company and stock of any class
or classes into which such common stock or any such other class may thereafter
be changed or reclassified. In case by reason of the operation of Article
Nineteen, the Convertible Securities shall be convertible into any other shares
or other securities or property of the Company or any other corporation, any
reference in this Indenture to the conversion of Convertible Securities pursuant
to Article Nineteen shall be deemed to refer to and include conversion of
Convertible Securities into such other shares or other securities or property.


                                      -3-
<PAGE>   14
            "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

            "Company Request" and "Company Order" mean, respectively, except as
otherwise provided in this Indenture, a written request or order signed in the
name of the Company by the Chairman of the Board, a Vice Chairman of the Board,
the President or a Vice President (any references to a Vice President of the
Company herein shall be deemed to include any Vice President of the Company
whether or not designated by a number or word or words added before or after the
title "Vice President"), the Treasurer, an Assistant Treasurer, the Controller,
an Assistant Controller, Secretary or an Assistant Secretary of the Company, or
by another officer of the Company duly authorized to sign by a Board Resolution,
and delivered to the Trustee.

            "Conversion Price" has the meaning specified in Section 19.5.

            "Convertible Securities" means any series of Debt Securities that
are designated as such pursuant to Section 3.1.

            "Corporate Trust Office" means the principal office of the Trustee
at which at any particular time its corporate trust business shall be
administered.

            The term "corporation" includes corporations, associations,
companies and business trusts.

            The term "coupon" means any interest coupon appertaining to a Bearer
Security.

            "Debt Securities" has the meaning stated in the first recital of
this Indenture and more particularly means any Debt Securities authenticated and
delivered under this Indenture.

            "Default" means any Event of Default and any default of the type set
forth in clauses (1) through (5) of Section 5.3.

            "Defaulted Interest" has the meaning specified in Section 3.7.

            "Depositary" means, with respect to the Debt Securities of any
series issuable or issued in the form of a Global Security, the Person (which
person shall be a clearing agency registered under the Securities Exchange Act
of 1934, as amended) designated as Depositary by the Company pursuant to Section
3.1 until a successor Depositary shall have become such pursuant to the
applicable provisions of this Indenture, and thereafter "Depositary" shall mean
or include each person who is then a Depositary hereunder, and if at any time
there is more than one such Person, "Depositary" as used with respect to the
Debt Securities of any such series shall mean the Depositary with respect to the
Debt Securities of that series.

            "Designated Currency" has the meaning specified in Section 3.12.

            "Dollar" or "$" means the coin or currency of the United States of
America as at the time of payment is legal tender for the payment of public and
private debts.


                                      -4-
<PAGE>   15
            "Eligible Instruments" means U.S.  Government Obligations.

            "Euro" means the European currency in use by those European Union
countries participating in the system of economic and monetary union established
by the Maastrich Treaty of 1992.

            "Euroclear" means Morgan Guaranty Trust Company of New York,
Brussels Office, as operator of the Euroclear System.

            "Event of Default" has the meaning specified in Section 5.1.

            "Exchange Rate" shall have the meaning specified as contemplated in
Section 3.1.

            "Exchange Rate Agent" shall have the meaning specified as
contemplated in Section 3.1.

            "Exchange Rate Officer's Certificate", with respect to any date for
the payment of principal of (and premium, if any) and interest on any series of
Debt Securities, means a certificate setting forth the applicable Exchange Rate
and the amounts payable in Dollars and Foreign Currencies in respect of the
principal of (and premium, if any) and interest on Debt Securities denominated
in Euros, and other composite currency or Foreign Currency, and signed by the
Chairman of the Board, a Vice Chairman of the Board, the President, the
Treasurer or any Assistant Treasurer of the Company or the Exchange Rate Agent
appointed pursuant to Section 3.1, and delivered to the Trustee.

            "Foreign Currency" means a currency issued by the government of any
country other than the United States of America.

            "Global Exchange Agent" has the meaning specified in Section 3.4.

            "Global Exchange Date" has the meaning specified in Section 3.4.

            "Global Security" means a Debt Security issued to evidence all or
part of a series of Debt Securities in accordance with Section 3.3(c).

            "Holder", with respect to a Registered Security, means a Person in
whose name such Registered Security is registered in the Security Register and,
with respect to a Bearer Security or a coupon, means the bearer thereof.

            "Indenture" means this instrument as originally executed or as it
may from time to time be supplemented, amended or restated by or pursuant to one
or more indentures supplemental hereto entered into pursuant to the applicable
provisions hereof and, unless the context otherwise requires, shall include the
terms of a particular series of Debt Securities established as contemplated by
Section 3.1.

            The term "interest", when used with respect to an Original Issue
Discount Security which by its terms bears interest only after Maturity, means
interest payable after Maturity.


                                      -5-
<PAGE>   16
            "Interest Payment Date", with respect to any Debt Security, means
the Stated Maturity of an installment of interest on such Debt Security.

            "Market Value" of any Capital Securities issued on any Capital
Exchange Date for Debt Securities of any series shall be the sale price of such
Capital Securities which are sold in the Secondary Offering for the Debt
Securities of such series. In the event no such Secondary Offering takes place,
the Market Value of such Capital Securities shall be the fair value of such
Capital Securities on such Capital Exchange Date for Debt Securities of such
series as determined by three independent nationally recognized investment
banking firms selected by the Company.

            "Maturity", when used with respect to any Debt Security, means the
date on which the principal of such Debt Security becomes due and payable as
therein or herein provided, whether at the Stated Maturity or by declaration of
acceleration, call for redemption, repayment at the option of the Holder or
otherwise.

            "Officers' Certificate" means a certificate signed by the Chairman
of the Board, a Vice Chairman of the Board, the President or a Vice President,
and by the Treasurer, an Assistant Treasurer, the Controller, an Assistant
Controller, the Secretary or an Assistant Secretary of the Company, and
delivered to the Trustee.

            "Opinion of Counsel" means a written opinion of counsel, who may
(except as otherwise expressly provided in this Indenture) be counsel for the
Company, or who may be other counsel acceptable to the Trustee, which is
delivered to the Trustee.

            "Optional Securities Fund" means a fund pursuant to which the
proceeds of sales of Capital Securities may be designated on the books of the
Company for the payment of any of the principal of any Debt Security pursuant to
Section 14.17 of this Indenture.

            "Original Issue Discount Security" means any Debt Security which
provides for an amount less than the principal amount thereof to be due and
payable upon a declaration of acceleration of the Maturity thereof pursuant to
Section 5.2.

            "Outstanding", when used with respect to Debt Securities means, as
of the date of determination, all Debt Securities theretofore authenticated and
delivered under this Indenture, except:

            (i) Debt Securities theretofore cancelled by the Trustee or
      delivered to the Trustee for cancellation;

            (ii) Debt Securities or portions thereof for whose payment or
      redemption money in the necessary amount has been theretofore deposited
      with the Trustee or any Paying Agent (other than the Company) in trust or
      set aside and segregated in trust by the Company (if the Company shall act
      as its own Paying Agent) for the Holders of such Debt Securities and any
      coupons appertaining thereto; provided, however, that if such Debt
      Secu-


                                      -6-
<PAGE>   17
      rities are to be redeemed, notice of such redemption has been duly given
      pursuant to this Indenture or provision therefor satisfactory to the
      Trustee has been made;

            (iii) Debt Securities in exchange for or in lieu of which other Debt
      Securities have been authenticated and delivered (other than any such
      Securities in respect of which there shall have been presented to the
      Trustee proof satisfactory to it that such securities are held by a bona
      fide purchaser in whose hands such securities are valid obligations of the
      Company) or which have been paid, pursuant to this Indenture; and

            (iv) Securities which have been defeased pursuant to Section 17.1;

provided, however, that in determining whether the Holders of the requisite
principal amount of Debt Securities Outstanding have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (i) the principal
amount of an Original Discount Security that shall be deemed to be Outstanding
shall be the amount of the principal thereof that would be due and payable as of
the date of such determination upon acceleration of the Maturity thereof
pursuant to Section 5.2, (ii) the principal amount of a Debt Security
denominated on one or more Foreign Currencies or currency units shall be the
Dollar equivalent, determined in the manner provided as contemplated by Section
3.1 on the date of original issuance of such Debt Security, of the principal
amount (or, in the case of an Original Issue Discount Security, the Dollar
equivalent on the date of original issuance of such Debt Security of the amount
determined as provided in clause (i) above) of such Debt Security, and (iii)
Debt Securities owned by the Company or any other obligor upon the Debt
Securities or any Affiliate of the Company or of such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in relying upon such request, demand,
authorization, direction, notice, consent or waiver, only Debt Securities which
the Trustee knows to be so owned shall be so disregarded. Debt Securities so
owned which have been pledged in good faith may be regarded as Outstanding if
the pledgee establishes to the satisfaction of the Trustee the pledgee's right
so to act with respect to such Debt Securities and that the pledgee is not the
Company or any other obligor upon the Debt Securities or any Affiliate of the
Company or of such other obligor.

            "Paying Agent" means any Person authorized by the Company to pay the
principal of (and premium, if any) or interest on any Debt Securities on behalf
of the Company.

            "Perpetual Preferred Stock" means any stock of any class of the
Company which has a preference over Common Stock in respect of dividends or of
amounts payable in the event of any voluntary or involuntary liquidation,
dissolution or winding up of the Company and which is not mandatorily redeemable
or repayable, or redeemable or repayable at the option of the Holder, otherwise
than in shares of Common Stock or Perpetual Preferred Stock of another class or
series or with the proceeds of the sale of Common Stock or Perpetual Preferred
Stock.

            "Person" means any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.


                                      -7-
<PAGE>   18
            "Place of Capital Exchange", when used with respect to Debt
Securities of any series, means any place where the Debt Securities of such
series are exchangeable for Capital Securities as specified pursuant to Section
3.1.

            "Place of Payment", when used with respect to the Debt Securities of
any series means any place where the principal of (and premium, if any) and
interest on the Debt Securities of that series are payable as specified as
contemplated by Section 3.1.

            "Predecessor Security" of any particular Debt Security means every
previous Debt Security evidencing all or a portion of the same debt as that
evidenced by such particular Debt Security; and, for the purposes of this
definition, any Debt Security authenticated and delivered under Section 3.6 in
lieu of a lost, destroyed or stolen Debt Security shall be deemed to evidence
the same debt as the lost, destroyed or stolen Debt Security.

            "Primary Federal Regulator" means the primary United States federal
regulator of the Company (which at the date of this Indenture is the Board of
Governors of the Federal Reserve System), or any successor body or institution.

            "Redemption Date", when used with respect to any Debt Security to be
redeemed, means the date fixed for such redemption by or pursuant to this
Indenture.

            "Redemption Price", when used with respect to any Debt Security to
be redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

            "Registered Security" means any Debt Security in the form of
Registered Securities established pursuant to Section 2.1 which is registered in
the Security Register.

            "Regular Record Date" for the interest payable on any Interest
Payment Date on the Registered Securities of any series means the date specified
for that purpose as contemplated by Section 3.1.

            "Remarketing Entity", when used with respect to Debt Securities of
any series which are repayable at the option of the Holders thereof before their
Stated Maturity, means any person designated by the Company to purchase any such
Debt Securities.

            "Repayment Date", when used with respect to any Debt Security to be
repaid upon exercise of option for repayment by the Holder, means the date fixed
for such repayment pursuant to this Indenture.

            "Repayment Price", when used with respect to any Debt Security to be
repaid upon exercise of option for repayment by the Holder, means the price at
which it is to be repaid pursuant to this Indenture.

            "Responsible Officer" when used with respect to the Trustee, means
any officer of the Trustee assigned by it to administer its corporate trust
matters.

            "Rights" has the meaning specified in Section 19.6(c).


                                      -8-
<PAGE>   19
            "Secondary Offering", when used with respect to the Debt Securities
of any series, means the offering and sale by the Company of Capital Securities
for the account of Holders of Debt Securities of such series who elect to
receive cash and not Capital Securities on the Capital Exchange Date for such
series.

            "Securities Fund" means a fund pursuant to which the proceeds of
sales of Capital Securities are designated on the books of the Company for the
payment of any principal of any Debt Security pursuant to the provisions of
Section 15.1.

            "Security Register" and "Security Registrar" have the respective
meanings specified in Section 3.5.

            "Senior Debt" means any obligation of the Company to its creditors
whether now outstanding or subsequently incurred other than (i) any obligation
as to which, in the instrument creating or evidencing the same or pursuant to
which the same is outstanding, it is provided that such obligation is not Senior
Debt and (ii) obligations evidenced by the Debt Securities.

            "Special Record Date" for the payment of any Defaulted Interest
means a date fixed by the Trustee pursuant to Section 3.7.

            "Stated Maturity", when used with respect to any Debt Security or
any installment of interest thereon, means the date specified in such Debt
Security or a coupon representing such installment of interest as the fixed date
on which the principal of such Debt Security or such installment is due and
payable.

            "Trust Indenture Act" means the Trust Indenture Act of 1939 as in
force at the date as of which this instrument was executed, except as provided
in Section 9.5.

            "Trustee" means the Person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean or include each Person who is then a Trustee hereunder, and
if at any time there is more than one such Person, "Trustee" as used with
respect to the Debt Securities of any series shall mean the Trustee with respect
to Debt Securities of that series.

            "United States" means the United States of America (including the
District of Columbia) and its possessions which include Puerto Rico, the U.S.
Virgin Islands, Guam, American Samoa, Wake Island, and the Northern Mariana
Islands.

            "United States Alien" means any Person who, for United States
Federal income tax purposes, is a foreign corporation, a non-resident alien
individual, a non-resident alien fiduciary of a foreign estate or trust, or a
foreign partnership one or more of the members of which is, for United States
Federal income tax purposes, a foreign corporation, a non-resident alien
individual or a non-resident alien fiduciary of a foreign estate or trust.


                                      -9-
<PAGE>   20
            "U.S. Government Obligations" means direct obligations of the United
States for the payment of which its full faith and credit is pledged, or
obligations of a person controlled or supervised by and acting as an agency or
instrumentality of the United States the timely payment of which is
unconditionally guaranteed as a full faith and credit obligation by the United
States of America, which in either case are not callable or redeemable at the
option of the issuer thereof.

            SECTION 1.2. Compliance Certificates and Opinions.

            Upon any application or request by the Company to the Trustee to
take any action under any provision of this Indenture (other than the delivery
of any Debt Security to the Trustee for authentication pursuant to Section 3.3),
the Company shall furnish to the Trustee, if so requested by the Trustee, an
Officers' Certificate stating that all conditions precedent, if any, provided
for in this Indenture relating to the proposed action have been complied with
and an Opinion of Counsel stating that in the opinion of such counsel all such
conditions precedent, if any, have been complied with, except that in the case
of any such application or request as to which the furnishing of such documents
is specifically required by any provision of this Indenture relating to such
particular application or request, no additional certificate or opinion need be
furnished.

            Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include

            (1) a statement that each individual signing such certificate or
      opinion has read such covenant or condition and the definition herein
      relating thereto;

            (2) a brief statement as to the nature and scope of the examination
      or investigation upon which the statements or opinions contained in such
      certificate or opinion are based;

            (3) a statement that, in the opinion of each such individual, he or
      she has made such examination or investigation as is necessary to enable
      him or her to express an informed opinion as to whether or not such
      covenant or condition has been complied with; and

            (4) a statement as to whether, in the opinion of each such
      individual, such condition or covenant has been complied with.

            SECTION 1.3. Form of Documents Delivered to Trustee.

            In any case where several matters are required to be certified by,
or covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.


                                      -10-
<PAGE>   21
            Any certificate or opinion of an officer of the Company may be
based, insofar as it relates to legal matters, upon a certificate or opinion of,
or representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his or her certificate or opinion is
based is erroneous. Any such certificate or Opinion of Counsel may be based,
insofar as it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or officers of the Company stating that the
information with respect to such factual matters is in the possession of the
Company, unless such counsel knows, or in the exercise of reasonable care should
know, that the certificate or opinions or representations with respect to such
matters is erroneous.

            Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

            SECTION 1.4. Acts of Holders.

            (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by an agent duly
appointed in writing. If Debt Securities of a series are issuable in whole or in
part as Bearer Securities, any request, demand, authorization, direction,
notice, consent, waiver or other action provided by this Indenture to be given
or taken by Holders may, alternatively, be embodied in and evidenced by the
record of Holders of Debt Securities voting in favor thereof, either in person
or by proxies duly appointed in writing, at any meeting of Holders of Debt
Securities duly called and held in accordance with the provisions of Article
Sixteen, or a combination of such instruments and any such record. Except as
herein otherwise expressly provided, such action shall become effective when
such instrument or instruments or record or both are delivered to the Trustee,
and, where it is hereby expressly required, to the Company. Such instrument or
instruments and any such record (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Holders signing
such instrument or instruments and so voting at any such meeting. Proof of
execution of any such instrument or of a writing appointing any such agent, or
the holding by any Person of a Debt Security, shall be sufficient for any
purpose of this Indenture and (subject to Section 6.1) conclusive in favor of
the Trustee and the Company, if made in the manner provided in this Section. The
record of any meeting of Holders of Debt Securities shall be proved in the
manner provided in Section 16.6.

            (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved in any manner which the Trustee deems
sufficient.

            (c) The ownership of Registered Securities shall be proved by the
Security Register.

            (d) The principal amount and serial numbers of Bearer Securities
held by any Person, and the date of holding the same, may be proved by the
production of such Bearer


                                      -11-
<PAGE>   22
Securities or by a certificate executed, as depositary, by any trust company,
bank, banker or other depositary, wherever situated, if such certificate shall
be deemed by the Trustee to be satisfactory, showing that at the date therein
mentioned such Person had on deposit with such depositary, or exhibited to it,
the Bearer Securities in the amount and with the serial numbers therein
described; or such facts may be proved by the certificate or affidavit of the
Person holding such Bearer Securities, if such certificate or affidavit is
deemed by the Trustee to be satisfactory. The Trustee and the Company may assume
that such ownership of any Bearer Security continues until (1) another
certificate or affidavit bearing a later date issued in respect of the same
Bearer Security is produced, or (2) such Bearer Security is produced to the
Trustee by some other person, or (3) such Bearer Security is surrendered in
exchange for a Registered Security, or (4) such Bearer Security is no longer
Outstanding.

            (e) The fact and date of execution of any such instrument or
writing, the authority of the Person executing the same and the principal amount
and serial numbers of Bearer Securities held by the Person so executing such
instrument or writing and the date of holding the same may also be proved in any
other manner which the Trustee deems sufficient; and the Trustee may in any
instance require further proof with respect to any of the matters referred to in
this Section.

            (f) Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Debt Security shall bind every future
holder of the same Debt Security and the Holder of every Debt Security issued
upon the registration of transfer thereof or in exchange therefor or in lieu
thereof in respect of anything done, suffered or omitted by the Trustee or the
Company in reliance thereon, whether or not notation of such action is made upon
such Debt Security.

            (g) For purposes of determining the principal amount of Outstanding
Debt Securities of any series of Holders of which are required, requested or
permitted to give any request, demand, authorization, direction, notice,
consent, waiver or take any other Act under this Indenture, (i) each Original
Issue Discount Security shall be deemed to have the principal amount determined
by the Trustee that could be declared to be due and payable pursuant to the
terms of such Original Issue Discount Security as of the date there is delivered
to the Trustee and, where it is hereby expressly required, to the Company, such
Act by Holders of the required aggregate principal amount of the Outstanding
Debt Securities of such series and (ii) each Debt Security denominated in a
Foreign Currency or composite currency shall be deemed to have the principal
amount determined by the Exchange Rate Agent by converting the principal amount
of such Debt Security in the currency in which such Debt Security is denominated
into Dollars at the Exchange Rate as of the date such Act is delivered to the
Trustee and, where it is hereby expressly required, to the Company, by Holders
of the required aggregate principal amount of the Outstanding Debt Securities of
such series (or, if there is no such rate on such date, such rate on the date
determined as specified as contemplated in Section 3.1).

            (h) The Company may set a record date for purposes of determining
the identity of Holders of Debt Securities of any series entitled to vote or
consent to any action by vote or consent authorized or permitted by Section 5.12
or Section 5.13. Such record date shall be the


                                      -12-
<PAGE>   23
later of 30 days prior to the first solicitation of such consent or the date of
the most recent list of Holders of such Debt Securities furnished to the Trustee
pursuant to Section 7.1 prior to such solicitation.

            SECTION 1.5. Notices, etc., to Trustee and Company.

            Any request, demand, authorization, direction, notice, consent,
waiver or other Act of Holders or other document provided or permitted by this
Indenture to be made upon, given or furnished to, or filed with,

            (1) the Trustee by any Holder or by the Company shall be sufficient
      for every purpose hereunder (unless otherwise herein expressly provided),
      if made, given, furnished or filed in writing to or with the Trustee at
      its Corporate Trust Office, Attention: Corporate Trust Department, or

            (2) the Company by the Trustee or by any Holder shall be sufficient
      for every purpose hereunder (unless otherwise herein expressly provided)
      if in writing and mailed, first-class postage prepaid, to the Company
      addressed to the attention of its Secretary at the address of its
      principal office specified in the first paragraph of this instrument or at
      any other address previously furnished in writing to the Trustee by the
      Company.

            SECTION 1.6. Notice to Holders; Waiver.

            Except as otherwise expressly provided herein, where this Indenture
provides for notice to Holders of any event, (1) such notice shall be
sufficiently given to Holders of Registered Securities if in writing and mailed,
first-class postage prepaid, to each Holder of a Registered Security affected by
such event, at such Holder's address as it appears in the Security Register, not
later than the latest date, and not earlier than the earliest date, prescribed
for the giving of such notice; and (2) such notice shall be sufficiently given
to Holders of Bearer Securities by publication thereof in an Authorized
Newspaper in The City of New York and, if the Debt Securities of such series are
then listed on The International Stock Exchange of the United Kingdom and the
Republic of Ireland and such stock exchange shall so require, in London, and, if
the Debt Securities of such series are then listed on the Luxembourg Stock
Exchange and such stock exchange shall so require, in Luxembourg and, if the
Debt Securities of such series are then listed on any other stock exchange
outside the United States and such stock exchange shall so require, in any other
required city outside the United States or, if not practicable, in Europe on a
Business Day at least twice, the first such publication to be not later than the
latest date and not earlier than the earliest date prescribed for the giving of
such notice.

            In case, by reason of the suspension of or irregularities in regular
mail service or for any other reason, it shall be impossible or impracticable to
mail notice of any event to Holders when said notice is required to be given
pursuant to any provision of this Indenture or of the Debt Securities, then any
manner of giving such notice as shall be satisfactory to the Trustee shall be
deemed to be a sufficient giving of such notice. In any case where notice to
Holders of Registered Securities is to be given by mail, neither the failure to
mail such notice, nor any defect in any notice so mailed, to any particular
Holder of a Registered Security shall affect the suffi-


                                      -13-
<PAGE>   24
ciency of such notice with respect to other Holders of Registered Securities or
the sufficiency of any notice by publication to Holders of Bearer Securities
given as provided above.

            In case, by reason of the suspension of publication of any
Authorized Newspaper, or by reason of any other cause, it shall be impossible or
impracticable to make publication of any notice to Holders of Bearer Securities
as provided above, then such method of publication or notification as shall be
made with the approval of the Trustee shall constitute a sufficient publication
of such notice. Neither failure to give notice by publication to Holders of
Bearer Securities as provided above, nor any defect in any notice so published,
shall affect the sufficiency of any notice mailed to Holders of Registered
Securities as provided above.

            Where this Indenture provides for notice in any manner, such notice
may be waived in writing by the Person entitled to receive such notice, either
before or after the event, and such waiver shall be the equivalent of such
notice. Waivers of notice by Holders shall be filed with the Trustee, but such
filing shall not be a condition precedent to the validity of any action taken in
reliance upon such waiver.

            Any request, demand, authorization, direction, notice, consent,
election, waiver or other Act required or permitted under this Indenture shall
be in the English language, except that any published notice may be in an
official language of the country of publication.

            SECTION 1.7. Conflict with Trust Indenture Act.

            If any provision hereof limits, qualifies or conflicts with another
provision hereof which is required to be included in this Indenture by any of
the provisions of the Trust Indenture Act, such required provision shall
control.

            SECTION 1.8. Effect of Headings and Table of Contents.

            The Article and Section headings herein and the Table of Contents
are for convenience only and shall not affect the construction hereof.

            SECTION 1.9. Successors and Assigns.

            All covenants and agreements in this Indenture by the Company shall
bind its successors and assigns, whether expressed or not.

            SECTION 1.10. Separability Clause.

            In case any provision in this Indenture or in the Debt Securities or
coupons shall be invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

            SECTION 1.11. Benefits of Indenture.

            Nothing in this Indenture or in the Debt Securities or coupons,
express or implied, shall give to any Person, other than the parties hereto and
their successors hereunder, any Paying


                                      -14-
<PAGE>   25
Agent, the Holders and the holders of Senior Debt any benefit or any legal or
equitable right, remedy or claim under this Indenture.

            SECTION 1.12. Governing Law.

            This Indenture and the Debt Securities and coupons shall be governed
by and construed in accordance with the laws of the State of Wisconsin.

            SECTION 1.13. Legal Holidays.

            In any case where any Interest Payment Date, Redemption Date,
Capital Exchange Date, Repayment Date or Stated Maturity of any Debt Security
shall not be a Business Day at any Place of Payment or Place of Capital
Exchange, then (notwithstanding any other provision of this Indenture or of the
Debt Securities or coupons) payment of interest or principal (and premium, if
any) or exchange of Debt Securities for Capital Securities or cash need not be
made at such Place of Payment or Place of Capital Exchange on such date, but may
be made on the next succeeding Business Day at such Place of Payment or Place of
Capital Exchange with the same force and effect as if made on the Interest
Payment Date, Capital Exchange Date, Redemption Date, Repayment Date or Stated
Maturity, and no interest shall accrue for the period from and after such
Interest Payment Date, Redemption Date, Repayment Date, Capital Exchange Date or
Stated Maturity, as the case may be.

            SECTION 1.14. Counterparts.

            This Indenture may be executed in any number of counterparts, each
of which so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same Indenture.

                                   ARTICLE TWO

                               DEBT SECURITY FORMS

            SECTION 2.1. Forms Generally.

            The Registered Securities, if any, and the Bearer Securities and
related coupons, if any, of each series shall be in substantially the form
(including temporary or permanent global form) as shall be established in or
pursuant to a Board Resolution or in one or more indentures supplemental hereto,
in each case with such appropriate insertions, omissions, substitutions and
other variations as are required or permitted by this Indenture, and may have
such letters, numbers or other marks of identification and such legends or
endorsements placed thereon, as may be required to comply with the rules of any
securities exchange, or as may, consistently herewith, be determined by the
officers executing such Debt Securities or coupons, as evidenced by their
signatures on the Debt Securities or coupons. If the form of Debt Securities of
any series or coupons (including any such Global Security) is established by
action taken pursuant to a Board Resolution, a copy of an appropriate record of
such action shall be certified by the Secretary or


                                      -15-
<PAGE>   26
an Assistant Secretary of the Company and delivered to the Trustee at or prior
to the delivery of the Company Order contemplated by Section 3.3 or the
authentication and delivery of such Debt Securities or coupons.

            Unless otherwise specified as contemplated by Section 3.1, Debt
Securities in bearer form other than Debt Securities in temporary or permanent
global form shall have coupons attached.

            The definitive Debt Securities and coupons, if any, shall be
printed, lithographed or engraved on steel engraved borders or may be produced
in any other manner, all as determined by the officers executing such Debt
Securities, as evidenced by the execution of such Debt Securities and coupons.

            SECTION 2.2. Form of Trustee's Certificate of Authentication.

            The Trustee's certificate of authentication shall be in
substantially the following form:

            This is one of the Debt Securities, of the series designated herein,
described in the within-mentioned Indenture.

                                        [________________]

                                        as Trustee

                                        By____________________________
                                             Authorized Officer
                                        _______________________________

            SECTION 2.3. Debt Securities in Global Form.

            If Debt Securities of a series are issuable in whole or in part in
global form, as specified as contemplated by Section 3.1, then, notwithstanding
clause (12) of Section 3.1 and the provisions of Section 3.2, such Global
Security shall represent such of the Outstanding Debt Securities of such series
as shall be specified therein and may provide that it shall represent the
aggregate amount of Outstanding Debt Securities from time to time endorsed
thereon and that the aggregate amount of Outstanding Debt Securities represented
thereby may from time to time be reduced to reflect exchanges. Any endorsement
of a Global Security to reflect the amount, or any increase or decrease in the
amounts of Outstanding Debt Securities represented thereby shall be made in such
manner and upon instructions given by such Person or Persons as shall be
specified therein or in the Company Order to be delivered to the Trustee
pursuant to Section 3.3 or Section 3.4.

            The provisions of the last sentence of Section 3.3(g) shall apply to
any Debt Securities represented by a Debt Security in global form if such Debt
Security was never issued and sold by the Company and the Company delivers to
the Trustee the Debt Security in global form together with written instructions
(which need not comply with Section 1.2 and need not be


                                      -16-
<PAGE>   27
accompanied by an Opinion of Counsel) with respect to the reduction in the
principal amount of Debt Securities represented thereby, together with the
written statement contemplated by the last sentence of Section 3.3(g).

            Global Securities may be issued in either registered or bearer form
and in either temporary or permanent global form.


                                  ARTICLE THREE

                               THE DEBT SECURITIES

            SECTION 3.1. Amount Unlimited; Issuance in Series.

            The aggregate principal amount of Debt Securities which may be
authenticated and delivered under this Indenture is unlimited.

            The Debt Securities may be issued in one or more series. There shall
be established in or pursuant to a Board Resolution, and set forth in an
Officers' Certificate, or established in one or more indentures supplemental
hereto, prior to the issuance of Debt Securities of any series:

            (1) the title of the Debt Securities of the series (which shall
      distinguish the Debt Securities of the series from all other Debt
      Securities);

            (2) the limit, if any, upon the aggregate principal amount of the
      Debt Securities of the series which may be authenticated and delivered
      under this Indenture (except for Debt Securities authenticated and
      delivered upon registration of transfer of, or in exchange for, or in lieu
      of, other Debt Securities of the series pursuant to Section 3.4, 3.5, 3.6,
      9.6, 11.7, 13.3, 14.8 or 19.3 and except for any Debt Securities which,
      pursuant to Section 3.3, are deemed never to have been authenticated and
      delivered hereunder);

            (3) the date or dates on which the principal and premium, if any, of
      the Debt Securities of the series are payable;

            (4) the rate or rates, if any, at which the Debt Securities of the
      series shall bear interest, or the method or methods by which such rate or
      rates may be determined, the date or dates from which such interest shall
      accrue, the Interest Payment Dates on which such interest shall be
      payable, the Regular Record Date for the interest payable on any
      Registered Security on any Interest Payment Date and the circumstances, if
      any, in which the Company may defer interest payments;

            (5) the place or places where, subject to the provisions of Section
      10.2, the principal of (and premium, if any) and interest on Debt
      Securities of the series shall be payable, any Registered Securities of
      the series may be surrendered for registration of transfer, Debt
      Securities of the series may be surrendered for exchange and notices and
      demands to or upon the Company in respect of the Debt Securities of the
      series and this


                                      -17-
<PAGE>   28
      Indenture may be served and where notices to Holders pursuant to Section
      1.6 will be published;

            (6) if applicable, the period or periods within which or the date or
      dates on which, the price or prices at which and the terms and conditions
      upon which Debt Securities of the series may be redeemed, in whole or in
      part, at the option of the Company;

            (7) if applicable, the place or places at which, the period or
      periods within which, the price or prices at which and the terms and
      conditions upon which Debt Securities shall be exchangeable for Capital
      Securities of the Company, which terms and conditions shall not be
      inconsistent with Article Fourteen;

            (8) any covenant or option of the Company to create a Securities
      Fund for the repayment of the Debt Securities and the terms and conditions
      of such Securities Fund, which terms and conditions shall not be
      inconsistent with Article Fifteen;

            (9) the obligation, if any, of the Company to redeem, repay or
      purchase Debt Securities of the series pursuant to any sinking fund or
      analogous provisions or at the option of a Holder thereof and the period
      or periods within which, the price or prices at which and the terms and
      conditions upon which Debt Securities of the series shall be redeemed,
      repaid or purchased, in whole or in part, pursuant to such obligation;

            (10) whether Debt Securities of the series are to be issuable as
      Registered Securities, Bearer Securities or both, whether Debt Securities
      of the series are to be issuable with or without coupons or both and, in
      the case of Bearer Securities, the date as of which such Bearer Securities
      shall be dated if other than the date of original issuance of the first
      Debt Security of such series of like tenor and term to be issued;

            (11) whether the Debt Securities of the series shall be issued in
      whole or in part in the form of a Global Security or Securities and, in
      such case, the Depositary and Global Exchange Agent for such Global
      Security or Securities, whether such global form shall be permanent or
      temporary and, if applicable, the Global Exchange Date;

            (12) if Debt Securities of the series are to be issuable initially
      in the form of a temporary Global Security, the circumstances under which
      the temporary Global Security can be exchanged for definitive Debt
      Securities and whether the definitive Debt Securities will be Registered
      and/or Bearer Securities and will be in global form and whether interest
      in respect of any portion of such Global Security payable in respect of an
      Interest Payment Date prior to the Global Exchange Date shall be paid to
      any clearing organization with respect to a portion of such Global
      Security held for its account and, in such event, the terms and conditions
      (including any certification requirements) upon which any such interest
      payment received by a clearing organization will be credited to the
      Persons entitled to interest payable on such Interest Payment Date if
      other than as provided in this Article Three;


                                      -18-
<PAGE>   29
            (13) whether, and under what conditions, additional amounts will be
      payable to Holders of Debt Securities of the series pursuant to Section
      10.6;

            (14) the denominations in which any Registered Securities of the
      series shall be issuable, if other than denominations of $1,000 and any
      integral multiple thereof, and the denominations in which any Bearer
      Securities of such series shall be issuable, if other than the
      denomination of $5,000;

            (15) if other than the principal amount thereof, the portion of the
      principal amount of Debt Securities of the series which shall be payable
      upon declaration of acceleration of the Maturity thereof pursuant to
      Section 5.2;

            (16) the currency or currencies of denomination of the Debt
      Securities of any series, which may be in Dollars, any Foreign Currency or
      any composite currency, including but not limited to the Euro, and, if any
      such currency of denomination is a composite currency other than the Euro,
      the agency or organization, if any, responsible for overseeing such
      composite currency;

            (17) the currency or currencies in which payment of the principal of
      (and premium, if any) and interest on the Debt Securities will be made,
      the currency or currencies, if any, in which payment of the principal of
      (and premium, if any) or the interest on Registered Securities, at the
      election of each of the Holders thereof, may also be payable and the
      periods within which and the terms and conditions upon which such election
      is to be made and the Exchange Rate and Exchange Rate Agent;

            (18) if the amount of payments of principal of (and premium, if any)
      or interest on the Debt Securities of the series may be determined with
      reference to an index based on a currency or currencies other than that in
      which the Debt Securities are denominated or designated to be payable, the
      manner in which such amounts shall be determined;

            (19) if payments of principal of (and premium, if any) or interest
      on the Debt Securities of the series are to be made in a Foreign Currency
      other than the currency in which such Debt Securities are denominated, the
      manner in which the Exchange Rate with respect to such payments shall be
      determined or if the Exchange Rate is to be determined otherwise than as
      provided in Section 1.1;

            (20) any Events of Default with respect to Debt Securities of such
      series, if not set forth herein;

            (21) any other covenant or warranty included for the benefit of the
      Debt Securities of the series in addition to (and not inconsistent with)
      those set forth herein for the benefit of Debt Securities of all series,
      or any other covenant or warranty included for the benefit of Debt
      Securities of the series in lieu of any covenant or warranty set forth
      herein for the benefit of Debt Securities of all series, or any provision
      that any covenant or warranty set forth herein for the benefit of Debt
      Securities of all series shall not be for the benefit of Debt Securities
      of such series, or any combination of such covenants, warran-


                                      -19-
<PAGE>   30
      ties or provisions and the applicability, if any, of the provisions of
      Section 10.5 to such covenants and warranties;

            (22) the terms and conditions, if any, pursuant to which the
      Company's obligations under this Indenture may be terminated through the
      deposit of money or Eligible Instruments as provided in Articles Four and
      Seventeen;

            (23) the Person or Persons who shall be Security Registrar for the
      Debt Securities of such series if other than the Trustee, and the place or
      places where the Security Register for such series shall be maintained and
      the Person or Persons who will be the initial Paying Agent or Agents, if
      other than the Trustee;

            (24) whether the Debt Securities of the series are Convertible
      Securities and the terms related thereto including the Conversion Price
      and the date on which the right to convert expires; and

            (25) any other terms of the series (which terms shall not be
      inconsistent with the provisions of this Indenture).

            All Debt Securities of any one series and the coupons appertaining
to Bearer Securities of such series, if any, shall be substantially identical
except, in the case of Registered Securities, as to denomination and except as
may otherwise be provided in or pursuant to such Board Resolution and set forth
in such Officers' Certificate or in any such indenture supplemental hereto.

            Debt Securities of any particular series may be issued at various
times, with different dates on which the principal or any installment of
principal is payable, with different rates of interest, if any, or different
methods by which rates of interest may be determined, with different dates on
which such interest may be payable and with different Redemption or Repayment
Dates and may be denominated in different currencies or payable in different
currencies.

            If any of the terms of a series of Debt Securities are established
by action taken pursuant to a Board Resolution, a copy of an appropriate record
of such action shall be certified by the Secretary or an Assistant Secretary of
the Company and delivered to the Trustee at or prior to the delivery of the
Officers' Certificate setting forth the terms of the series.

            SECTION 3.2. Denominations.

            Debt Securities of each series shall be issuable in such form and
denominations as shall be specified in the form of Debt Security for such series
approved or established pursuant to Section 2.1 or in the Officers' Certificate
delivered pursuant to Section 3.1. In the absence of any specification with
respect to the Debt Securities of any series, the Registered Securities of such
series, if any, shall be issuable in denominations of $1,000 and any integral
multiple thereof and the Bearer Securities of such series, if any, shall be
issuable in the denominations of $5,000.


                                      -20-
<PAGE>   31
            SECTION 3.3. Execution, Authentication, Delivery and Dating.

            (a) The Debt Securities shall be executed on behalf of the Company
by its Chairman of the Board, a Vice Chairman of the Board, the President or a
Vice President, and by its Treasurer or one of its Assistant Treasurers or its
Secretary or one of its Assistant Secretaries under its corporate seal
reproduced thereon. The signature of any of these officers on the Debt
Securities may be manual or facsimile. Coupons shall bear the facsimile
signature of an authorized officer of the Company.

            Debt Securities and coupons bearing the manual or facsimile
signatures of individuals who were at any time the proper officers of the
Company shall bind the Company, notwithstanding that such individuals or any of
them have ceased to hold such offices prior to the authentication and delivery
of such Debt Securities or coupons of any series or did not hold such offices at
the date of such Debt Securities or coupons.

            (b) At any time and from time to time after the execution and
delivery of this Indenture, Debt Securities of any series may be executed by the
Company and delivered to the Trustee for authentication, and, except as
otherwise provided in this Article Three, shall thereupon be authenticated and
delivered by the Trustee upon Company Order, without any further action by the
Company; provided, however, that, in connection with its original issuance or
any sale during the "restricted period" as defined in Section
1.163-5(c)(2)(i)(b)(7) of the U.S. Treasury Regulations, a Bearer Security may
be delivered only outside the United States and, except in the case of a
temporary Global Security, only if the Company or its agent shall have received
the certification required pursuant to Sections 3.4(b)(iii) and (iv), unless
such certification shall have been provided earlier pursuant to Section
3.4(b)(v) hereof, and only if the Company has no reason to know that such
certification is false.

            To the extent authorized in or pursuant to a Board Resolution and
set forth in an Officers' Certificate, or established in one or more indentures
supplemental hereto, such written Company Order may be given by any one officer
or employee of the Company, may be electronically transmitted, and may provide
instructions as to registration of holders, principal amounts, rates of
interest, maturity dates and other matters contemplated by such Board Resolution
and Officers' Certificate or supplemental indenture to be so instructed in
respect thereof. Before authorizing and delivering the first Debt Securities of
any series (and upon request of the Trustee thereafter), the Company shall
deliver to the Trustee (i) the certificates called for under Sections 2.1 and
3.1 hereof and (ii) an Opinion of Counsel described in the next sentence.

            In authenticating such Debt Securities, and accepting the additional
responsibilities under this Indenture in relation to any Debt Securities, the
Trustee shall be entitled to receive, prior to the initial authentication of
such Debt Securities, and (subject to Section 6.1) shall be fully protected in
relying upon:

            (i) a Board Resolution relating thereto and, if applicable, an
      appropriate record of any action taken pursuant to such resolution
      certified by the Secretary or an Assistant Secretary of the Company;


                                      -21-
<PAGE>   32
            (ii) an executed supplemental indenture, if any, relating thereto;

            (iii) an Officers' Certificate setting forth the form and terms of
      the Debt Securities of such series and coupons, if any, pursuant to
      Sections 2.1 and 3.1 and stating that all conditions precedent provided
      for in this Indenture relating to the issuance of such Debt Securities
      have been complied with; and

            (iv) an Opinion of Counsel stating

                  (A) that the form of such Debt Securities and coupons, if any,
            has been established in or pursuant to a Board Resolution or by a
            supplemental indenture as permitted by Section 2.1 in conformity
            with the provisions of this Indenture;

                  (B) that the terms of such Debt Securities and coupons, if
            any, have been established in or pursuant to a Board Resolution or
            by a supplemental indenture as permitted by Section 3.1 in
            conformity with the provisions of this Indenture; and

                  (C) that such Debt Securities and coupons, if any, when
            authenticated and delivered by the Trustee and issued by the Company
            in the manner and subject to any conditions specified in such
            Opinion of Counsel, will constitute valid and binding obligations of
            the Company, enforceable in accordance with their terms, except that
            where Debt Securities of any series are to be exchanged for Capital
            Securities or paid from the Securities Fund, the issuance of Capital
            Securities will require further action by the Board of Directors,
            and subject, as to enforcement of remedies, to applicable
            bankruptcy, reorganization, insolvency, moratorium or other laws
            affecting creditors' rights generally and the application of general
            principles of equity and except further as enforcement thereof may
            be limited by (i) requirements that a claim with respect to any Debt
            Securities denominated other than in Dollars (or a Foreign Currency
            or currency unit judgment in respect of such claim) be converted
            into Dollars at a rate of exchange prevailing on a date determined
            pursuant to applicable law or (ii) governmental authority to limit,
            delay or prohibit the making of payments in Foreign Currencies or
            currency units or payments outside the United States.

            (c) If the Company shall establish pursuant to Section 3.1 that the
Debt Securities of a series are to be issued in whole or in part in the form of
one or more Global Securities, then the Company shall execute and the Trustee
shall, in accordance with this Section and the Company Order with respect to
such series, authenticate and deliver one or more Global Securities in permanent
or temporary form that (i) shall represent and shall be denominated in an
aggregate amount equal to the aggregate principal amount of the Outstanding Debt
Securities of such series to be represented by one or more Global Securities,
(ii) shall be registered in the name of the Depositary for such Global Security
or Securities or the nominee of such Depositary and (iii) shall be delivered by
the Trustee to such Depositary or pursuant to such Depositary's instructions.


                                      -22-
<PAGE>   33
            (d) The Trustee shall have the right to decline to authenticate and
deliver any Debt Securities under this Section 3.3 if the issuance of such Debt
Securities will adversely affect the Trustee's own rights, duties or immunities
under the Debt Securities and this Indenture or otherwise in a manner which is
not reasonably acceptable to the Trustee.

            (e) If all the Debt Securities of any series are not to be issued at
one time, it shall not be necessary to deliver an Opinion of Counsel and the
items specified in subsection (b)(i)-(iii) above at the time of issuance of each
Debt Security, but such Opinion of Counsel, with appropriate modifications, and
the items specified in subsection (b)(i)-(iii) above may instead be delivered at
or prior to the time of the first issuance of Debt Securities of such series.

            (f) Each Registered Security shall be dated the date of its
authentication. Each Bearer Security shall be dated as of the date specified as
contemplated by Section 3.1.

            (g) No Debt Security or coupon attached thereto shall be entitled to
any benefit under this Indenture or be valid or obligatory for any purpose,
unless there appears on such Debt Security a certificate of authentication
substantially in the form provided for herein executed by the Trustee, and such
certificate upon any Debt Security shall be conclusive evidence, and the only
evidence, that such Debt Security has been duly authenticated and delivered
hereunder. Except as permitted by Section 3.6, the Trustee shall not
authenticate and deliver any Bearer Security unless all appurtenant coupons for
interest then matured have been detached and cancelled. Notwithstanding the
foregoing, if any Debt Security or portion thereof shall have been duly
authenticated and delivered hereunder but never issued and sold by the Company,
and the Company shall deliver such Debt Security to the Trustee for cancellation
as provided in Section 3.9 together with a written statement (which need not
comply with Section 1.2 and need not be accompanied by an Opinion of Counsel)
stating that such Debt Security or portion thereof has never been issued and
sold by the Company, for all purposes of this Indenture such Debt Security shall
be deemed never to have been authenticated and delivered hereunder and shall
never be entitled to the benefits of this Indenture.

            (h) Each Depositary designated pursuant to Section 3.1 for a Global
Security in registered form must, at the time of its designation and at all
times while it serves as Depositary, be a clearing agency registered under the
Securities Exchange Act of 1934 and any other applicable statute or regulation.

            SECTION 3.4. Temporary Debt Securities.

            (a) Pending the preparation of definitive Debt Securities of any
series, the Company may execute, and upon receipt of documents required by
Sections 3.1 and 3.3, together with a Company Order, the Trustee shall
authenticate and deliver, temporary Debt Securities which are printed,
lithographed, typewritten, mimeographed or otherwise produced, in any
denomination, substantially of the tenor and terms of the definitive Debt
Securities in lieu of which they are issued in registered form or, if
authorized, in bearer form with one or more coupons or without coupons, and with
such appropriate insertions, omissions, substitutions and other variations as
the officers executing such Debt Securities may determine, as evidenced by their
signatures on such Debt Securities. In the case of Debt Securities of any series
issuable as


                                      -23-
<PAGE>   34
Bearer Securities, such temporary Debt Securities may be in global
form, representing all or any part of the Outstanding Debt Securities of such
series.

            (b) Unless otherwise provided pursuant to Section 3.1:

            (i) Except in the case of temporary Debt Securities in global form,
      if temporary Debt Securities of any series are issued, the Company will
      cause definitive Debt Securities of such series to be prepared without
      unreasonable delay. After the preparation of definitive Debt Securities of
      such series, the related temporary Debt Securities shall be exchangeable
      for such definitive Debt Securities upon surrender of the temporary Debt
      Securities of such series at the office or agency of the Company in the
      Place of Payment for such series, without charge to the Holder. Upon
      surrender for cancellation of any one or more temporary Debt Securities of
      any series (accompanied, if applicable, by all unmatured coupons and all
      matured coupons in default appertaining thereto), the Company shall
      execute and the Trustee shall authenticate and deliver in exchange
      therefor a like principal amount of definitive Debt Securities of the same
      series of like tenor and terms and of authorized denominations; provided,
      however, that no definitive Bearer Security shall be delivered in exchange
      for a temporary Registered Security; and provided, further, that a Bearer
      Security shall be delivered in exchange for a Bearer Security only in
      compliance with the conditions set forth in Section 3.5. Until so
      exchanged, the temporary Registered Securities of any series shall in all
      respects be entitled to the same benefits under this Indenture as defined
      Registered Securities of such series.

            (ii) If Debt Securities of any series are issued in temporary global
      form, any such temporary Global Security shall, unless otherwise provided
      pursuant to Section 3.1, be delivered to the Depositary for the benefit of
      Euroclear and CEDEL S.A., for credit to the respective accounts of the
      beneficial owners of such Debt Securities (or to such other accounts as
      they may direct).

            (iii) Without unnecessary delay but in any event not later than the
      date specified in, or determined pursuant to the terms of, any such
      temporary Global Security (the "Global Exchange Date"), the Company shall
      deliver definitive Debt Securities to the Trustee or the agent appointed
      by the Company pursuant to Section 3.1 to effect the exchange of the
      temporary Global Security for definitive Debt Securities (the "Global
      Exchange Agent"), in an aggregate principal amount equal to the principal
      amount of such temporary Global Security, executed by the Company. On or
      after the Global Exchange Date, such temporary Global Security shall be
      surrendered by the Depositary to the Global Exchange Agent, to be
      exchanged, in whole or from time to time in part, for definitive Debt
      Securities without charge and the Trustee or the Global Exchange Agent, if
      authorized by the Trustee pursuant to Section 6.14, shall authenticate and
      deliver, in exchange for each portion of such temporary Global Security,
      an equal aggregate principal amount of definitive Debt Securities of the
      same series of authorized denominations and of like tenor and terms as the
      portion of such temporary Global Security to be exchanged. Upon any
      exchange of a part of such temporary Global Security for definitive Debt
      Securities, the portion of the principal amount and any interest thereon
      so exchanged shall be


                                      -24-
<PAGE>   35
      endorsed by the Global Exchange Agent on a schedule to such temporary
      Global Security, whereupon the principal amount and interest payable with
      respect to such temporary Global Security shall be reduced for all
      purposes by the amount so exchanged and endorsed. The definitive Debt
      Securities to be delivered in exchange for any such temporary Global
      Security shall be in bearer form, registered form, global registered form
      or global bearer form, or any combination thereof, as specified as
      contemplated by Section 3.1, and, if any combination thereof is so
      specified, as requested by the beneficial owner thereof; provided,
      however, that, in the case of the exchange of the temporary Global
      Security for definitive Bearer Securities (including a definitive Global
      Bearer Security), upon such presentation by the Depositary, such temporary
      Global Security shall be accompanied by a certificate signed by Euroclear
      as to the portion of such temporary Global Security held for its account
      then to be exchanged and a certificate signed by CEDEL S.A. as to the
      portion of such temporary Global Security held for its account then to be
      exchanged, each in the form set forth in Exhibit B to this Indenture,
      unless such certificate(s) shall have been provided earlier pursuant to
      Section 3.4(b)(v) hereof; and provided, further, that definitive Bearer
      Securities (including a definitive Global Bearer Security) shall be
      delivered in exchange for a portion of a temporary Global Security only in
      compliance with the requirements of Section 3.3.

            (iv) The interest of a beneficial owner of Debt Securities of a
      series in a temporary Global Security shall be exchanged for definitive
      Debt Securities of the same series and of like tenor and terms following
      the Global Exchange Date when the account holder instructs Euroclear or
      CEDEL S.A., as the case may be, to request such exchange on such account
      holder's behalf and, in the case of the exchange of the temporary Global
      Security for definitive Bearer Securities (including a definitive Global
      Bearer Security), unless such certificate(s) shall have been provided
      earlier pursuant to Section 3.4(b)(v) hereof, the account holder delivers
      to Euroclear or CEDEL S.A., as the case may be, a certificate in the form
      set forth in Exhibit A-1 and, if applicable, A-2 to this Indenture, dated
      no earlier than 15 days prior to the Global Exchange Date, copies of which
      certificate shall be available from the offices of Euroclear and CEDEL
      S.A., the Global Exchange Agent, any authenticating agent appointed for
      such series of Debt Securities and each Paying Agent. Unless otherwise
      specified in such temporary Global Security, any such exchange shall be
      made free of charge to the beneficial owners of such temporary Global
      Security, except that a Person receiving definitive Debt Securities must
      bear the cost of insurance, postage, transportation and the like in the
      event that such Person does not take delivery of such definitive Debt
      Securities in person at the offices of Euroclear and CEDEL S.A. Definitive
      Debt Securities in bearer form to be delivered in exchange for any portion
      of a temporary Global Security shall be delivered only outside the United
      States.

            (v) Until exchanged in full as hereinabove provided, the temporary
      Debt Securities of any series shall in all respects be entitled to the
      same benefits under this Indenture as definitive Debt Securities of the
      same series and of like tenor and terms authenticated and delivered
      hereunder, except that interest payable on a temporary Global Security on
      an Interest Payment Date shall be payable to Euroclear and CEDEL S.A. on
      such Interest Payment Date only if there has been delivery by Euroclear
      and CEDEL S.A.


                                      -25-
<PAGE>   36
      to the Global Exchange Agent of a certificate or certificates in the form
      set forth in Exhibit B to this Indenture dated no earlier than the first
      Interest Payment Date, for credit without further interest on or after
      such Interest Payment Date to the respective accounts of the Persons who
      are the beneficial owners of such temporary Global Security on such
      Interest Payment Date and who have each delivered to Euroclear or CEDEL
      S.A., as the case may be, a certificate in the form set forth in Exhibit
      A-1 and, if applicable, A-2 to this Indenture dated no earlier than the
      first Interest Payment Date. Any interest so received by Euroclear and
      CEDEL S.A. and not paid as herein provided prior to the Global Exchange
      Date shall be returned to the Global Exchange Agent which, upon expiration
      of two years after such Interest Payment Date, shall repay such interest
      to the Company in accordance with Section 10.3.

            SECTION 3.5. Registration; Registration of Transfer and Exchange.

            The Company shall cause to be kept at one of the offices or agencies
to be maintained by the Company in accordance with the provisions of this
Section 3.5 and Section 10.2, with respect to the Debt Securities of each series
which are Registered Securities, a register (herein sometimes referred to as the
"Security Register") in which, subject to such reasonable regulations as it may
prescribe, the Company shall provide for the registration of Registered
Securities and of transfers of Registered Securities. Pursuant to Section 3.1,
the Company shall appoint, with respect to Debt Securities of each series which
are Registered Securities, a "Security Registrar" for the purpose of registering
such Debt Securities and transfers and exchanges of such Debt Securities as
herein provided.

            Upon surrender for registration of transfer of any Registered
Security of any series at the office or agency of the Company maintained for
such purpose, the Company shall execute, and the Trustee shall authenticate and
deliver, in the name of the designated transferee or transferees, one or more
new Registered Securities of the same series of any authorized denomination or
denominations, of like tenor and terms and aggregate principal amount.

            At the option of the Holder upon written request confirmed in
writing, Registered Securities of any series may be exchanged for other
Registered Securities of the same series of any authorized denomination or
denominations, of like tenor and terms and aggregate principal amount, and of a
like Stated Maturity upon surrender of the Registered Securities to be exchanged
at such office or agency. Whenever any Registered Securities are surrendered for
exchange, the Company shall execute and the Trustee shall make available for
delivery, the Registered Securities which the Holder is entitled to receive.
Bearer Securities may not be delivered in exchange for Registered Securities.

            If Debt Securities of any series are issuable as both Registered
Securities and Bearer Securities at the option of the Holder upon request
conferred in writing, Registered Securities or Bearer Securities of any series
may be issued in exchange for Bearer Securities (except as otherwise specified
as contemplated by Section 3.1 with respect to a Bearer Security in global form)
of the same series, of any authorized denominations and of like tenor and terms
and aggregate principal amount and of a like Stated Maturity, upon surrender of
the Bearer


                                      -26-
<PAGE>   37
Securities to be exchanged at any such office or agency, with all unmatured
coupons and all matured coupons in default thereto appertaining. If the Holder
of a Bearer Security is unable to produce any such unmatured coupon or coupons
or matured coupon or coupons in default, such exchange may be effected if the
Bearer Securities are accompanied by payment in funds acceptable to the Company
and the Trustee in an amount equal to the face amount of such missing coupon or
coupons, or the surrender of such missing coupon or coupons may be waived by the
Company and the Trustee if there be furnished to them such security or indemnity
as they may require to save each of them and any Paying Agent harmless. If
thereafter the Holder of such Security shall surrender to any Paying Agent any
such missing coupon in respect of which such a payment shall have been made,
such Holder shall be entitled to receive the amount of such payment; provided,
however, that, except as otherwise provided in Section 10.2, interest
represented by coupons shall be payable only upon presentation and surrender of
those coupons at an office or agency located outside the United States.
Notwithstanding the foregoing, in case a Bearer Security of any series is
surrendered at any such office or agency in exchange for a Registered Security
of the same series and like tenor and terms after the close of business at such
office or agency of (i) any Regular Record Date and before the opening of
business at such office or agency on the relevant Interest Payment Date, or (ii)
any Special Record Date and before the opening of business at such office or
agency on the related date for payment of Defaulted Interest, such Bearer
Security shall be surrendered without the coupon relating to such Interest
Payment Date or proposed date of payment, as the case may be and interest will
not be payable in respect of the Registered Security issued in exchange for such
Bearer Security but will be payable only to the Holder of such coupon when due
in accordance with the terms of this Indenture. The Company shall execute, and
the Trustee shall authenticate and make available for delivery, the Registered
Security or Securities which the Holder making the exchange is entitled to
receive.

            Whenever any Debt Securities are so surrendered for exchange, the
Company shall execute, and the Trustee shall authenticate and deliver, the Debt
Securities which the Holder making the exchange is entitled to receive.

            If at any time the Depositary for the Debt Securities of a series
notifies the Company that it is unwilling or unable to continue as Depositary
for the Debt Securities of such series or if at any time the Depositary for the
Debt Securities of such series shall no longer be eligible under Section 3.3(h),
the Company shall appoint a successor Depositary with respect to the Debt
Securities of such series. If a successor Depositary for the Debt Securities of
such series is not appointed by the Company within 90 days after the Company
receives such notice or becomes aware of such ineligibility, the Company's
election pursuant to Section 3.1(11) shall no longer be effective with respect
to the Debt Securities of such series and the Company will execute, and the
Trustee, upon receipt of a Company Order for the authentication and delivery of
definitive Debt Securities of such series, will authenticate and deliver, Debt
Securities of such series in definitive form in an aggregate principal amount
equal to the principal amount of the Global Security or Securities representing
such series in exchange for such Global Security or Securities.

            The Company may at any time and in its sole discretion determine
that the Debt Securities of any series issued in the form of one or more Global
Securities shall no longer be


                                      -27-
<PAGE>   38
represented by such Global Security or Securities. In such event the Company
will execute, and the Trustee, upon receipt of a Company Order for the
authentication and delivery of definitive Debt Securities of such series, will
authenticate and deliver, Debt Securities of such series in definitive form and
in an aggregate principal amount equal to the principal amount of the Global
Security or Securities representing such series in exchange for such Global
Security or Securities.

            If specified by the Company pursuant to Section 3.1 with respect to
a series of Debt Securities, the Depositary for such series of Debt Securities
may surrender a Global Security for such series of Debt Securities in exchange
in whole or in part for Debt Securities of such series of like tenor and terms
and in definitive form on such terms as are acceptable to the Company and such
Depositary. Thereupon, the Company shall execute, and the Trustee shall
authenticate and deliver, without service charge,

            (a) to each Person specified by such Depositary a new Debt Security
or Securities of the same series, of like tenor and terms and of any authorized
denominations as requested by such person in aggregate principal amount equal to
and in exchange for such Person's beneficial interest in the Global Security;
and

            (b) to such Depositary a new Global Security of like tenor and terms
and in a denomination equal to the difference, if any, between the principal
amount of the surrendered Global Security and the aggregate principal amount of
Debt Securities delivered to Holders thereof.

            In any exchange provided for in any of the preceding three
paragraphs, the Company will execute and the Trustee will authenticate and
deliver Debt Securities (a) in definitive registered form in authorized
denominations, if the Debt Securities of such series are issuable as Registered
Securities, (b) in definitive bearer form in authorized denominations, with
coupons attached, if the Debt Securities of such series are issuable as Bearer
Securities or (c) as either Registered or Bearer Securities, as shall be
specified by the beneficial owner thereof, if the Debt Securities of such series
are issuable in either form; provided, however, that no definitive Bearer
Security shall be delivered in exchange for a temporary Global Security unless
the Company or its agent shall have received from the person entitled to receive
the definitive Bearer Security a certificate substantially in the form set forth
in Exhibit A-1 and, if applicable, A-2 hereto; and provided further that
delivery of a Bearer Security shall occur only outside the United States; and
provided further that no definitive Bearer Security will be issued if the
Company has reason to know that any such certificate is false.

            Upon the exchange of a Global Security for Debt Securities in
definitive form, such Global Security shall be cancelled by the Trustee.
Registered Securities issued in exchange for a Global Security pursuant to this
Section shall be registered in such names and in such authorized denominations
as the Depositary for such Global Security, pursuant to instructions from its
direct or indirect participants or otherwise, shall instruct the Trustee. The
Trustee shall deliver such Registered Securities to the persons in whose names
such Debt Securities are so registered. The Trustee shall deliver Bearer
Securities issued in exchange for a Global Security pursuant to this Section to
the persons, and in such authorized denominations, as the Depositary


                                      -28-
<PAGE>   39
for such Global Security, pursuant to instructions from its direct or indirect
participants or otherwise, shall instruct the Trustee; provided, however, that
no definitive Bearer Security shall be delivered in exchange for a temporary
Global Security unless the Company or its agent shall have received from the
person entitled to receive the definitive Bearer Security a certificate
substantially in the form set forth in Exhibit A-1 and, if applicable, A-2
hereto; and provided further that delivery of a Bearer Security shall occur only
outside the United States; and provided further that no definitive Bearer
Security will be issued if the Company has reason to know that any such
certificate is false.

            All Debt Securities issued upon any registration of transfer or
exchange of Debt Securities shall be the valid obligations of the Company,
evidencing the same debt, and entitled to the same benefits under this
Indenture, as the Debt Securities surrendered upon such registration of transfer
or exchange.

            Every Registered Security presented or surrendered for registration
of transfer or for exchange shall (if so required by the Company, the Security
Registrar or the Trustee) be duly endorsed, or be accompanied by a written
instrument of transfer in form satisfactory to the Company, the Security
Registrar and the Trustee duly executed, by the Holder thereof or such Holder's
attorney duly authorized in writing.

            No service charge shall be made for any registration of transfer or
exchange of Debt Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any transfer, registration of transfer or exchange of Debt
Securities, other than exchanges expressly provided in this Indenture to be made
at the Company's own expense or without expense or without charge to the
Holders.

            The Company shall not be required (i) to issue, register the
transfer of or exchange Debt Securities of any particular series to be redeemed
or exchanged for Capital Securities for a period of fifteen days preceding the
first publication of the relevant notice of redemption or, if Registered
Securities are outstanding and there is no publication, the mailing of the
relevant notice of redemption or exchange, or (ii) to register the transfer of
or exchange of any Registered Security so selected for redemption or exchange in
whole or in part, except the unredeemed or unexchanged portion of such
Registered Security being redeemed or exchanged in part, or (iii) to exchange
any Bearer Security so selected for redemption or exchange except that such a
Bearer Security may be exchanged for a Registered Security of like tenor and
terms of that series, provided that such Registered Security shall be
simultaneously surrendered for redemption or exchange.

            Notwithstanding anything herein to the contrary, the exchange of
Bearer Securities into Registered Securities shall be subject to applicable laws
and regulations in effect at the time of exchange; neither the Company, the
Trustee nor the Security Registrar shall exchange any Bearer Securities into
Registered Securities if it has received an Opinion of Counsel that as a result
of such exchanges the Company would suffer adverse consequences under the United
States Federal income tax laws and regulations then in effect and the Company
has delivered to


                                      -29-
<PAGE>   40
the Trustee a Company Order directing the Trustee not to make such exchanges
thereafter unless and until the Trustee receives a subsequent Company Order to
the contrary. The Company shall deliver copies of such Company Orders to the
Security Registrar.

            SECTION 3.6. Mutilated, Destroyed, Lost and Stolen Debt Securities.

            If (i) any mutilated Debt Security or a Bearer Security with a
mutilated coupon appertaining to it is surrendered to a Paying Agent outside the
United States designated by the Company, or, in the case of any Registered
Security, to the Trustee, or (ii) the Company and the Trustee receive evidence
to their satisfaction of the destruction, loss or theft of any Debt Security or
coupon, and there is delivered to the Company and the Trustee such security or
indemnity as may be required by them to save each of them harmless, then, in the
absence of notice to the Company and the Trustee that such Debt Security or
coupon has been acquired by a bona fide purchaser, the Company shall execute and
upon its written request the Trustee shall authenticate and deliver, in exchange
for any such mutilated Debt Security or Bearer Security with a mutilated coupon
appertaining to it or to which a destroyed, lost or stolen coupon appertains
(with all appurtenant coupons not destroyed, lost or stolen) or in lieu of any
such destroyed, lost or stolen Debt Security, a new Debt Security of like tenor
and terms and principal amount, bearing a number not contemporaneously
outstanding, with coupons corresponding to the coupon, if any, appertaining to
such destroyed, lost or stolen Debt Security or to the Debt Security to which
such destroyed, lost or stolen coupon appertains; provided, however, that any
such new Bearer Security will be delivered only in compliance with the
conditions set forth in Section 3.5.

            In case any such mutilated, destroyed, lost or stolen Debt Security
or coupon has become or is about to become due and payable, the Company in its
discretion may, instead of issuing a new Debt Security, pay such Debt Security
or coupon; provided, however, that payment of principal of (and premium, if any)
and any interest on Bearer Securities shall, except as otherwise provided in
Section 10.2, be payable only at an office or agency located outside the United
States; and provided, further, that, with respect to any such coupons, interest
represented thereby (but not any additional amounts payable as provided in
Section 10.6), shall be payable only upon presentation and surrender of the
coupons appertaining thereto.

            Upon the issuance of any new Debt Security or coupons under this
Section, the Company may require the payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in relation thereto and any
other expenses (including the fees and expenses of the Trustee and printing
expenses) connected therewith.

            Every new Debt Security of any series, with its coupons, if any,
issued pursuant to this Section in lieu of any destroyed, lost or stolen Debt
Security, or in exchange for a Bearer Security to which a destroyed, lost or
stolen coupon appertains, shall constitute an original additional contractual
obligation of the Company, whether or not the destroyed, lost or stolen Debt
Security and its coupons, if any, or the destroyed, lost or stolen coupon shall
be at any time enforceable by anyone, and any such new Debt Security and
coupons, if any, shall be entitled to all the benefits of this Indenture equally
and proportionately with any and all other Debt Securities of that series and
their coupons, if any, duly issued hereunder.


                                      -30-
<PAGE>   41
            The provisions of this Section are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Debt Securities or coupons.

            SECTION 3.7. Payment of Interest; Interest Rights Preserved.

            Except as otherwise provided pursuant to Section 3.1, interest on
any Registered Security which is payable, and is punctually paid or duly
provided for, on any Interest Payment Date shall be paid to the Person in whose
name that Registered Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest. In case a Bearer Security of any series is surrendered in exchange for
a Registered Security of such series after the close of business (at an office
or agency in a Place of Payment for such series) on any Regular Record Date and
before the opening of business (at such office or agency) on the next succeeding
Interest Payment Date, such Bearer Security shall be surrendered without the
coupon relating to such Interest Payment Date and interest will not be payable
on such Interest Payment Date in respect of the Registered Security issued in
exchange for such Bearer Security, but will be payable only to the Holder of
such coupon when due in accordance with the provisions of this Indenture. At the
option of the Company, payment of interest on any Registered Security may be
made by check in the currency designated for such payment pursuant to the terms
of such Registered Security mailed to the address of the Person entitled thereto
as such address shall appear in the Security Register or by wire transfer to an
account in such currency designated by such Person in writing not later than ten
days prior to the date of such payment.

            Any interest on any Registered Security of any series which is
payable, but is not punctually paid or duly provided for, on any Interest
Payment Date (herein called "Defaulted Interest") shall forthwith cease to be
payable to the registered Holder on the relevant Regular Record Date by virtue
of his having been such Holder, and such Defaulted Interest may be paid by the
Company, at its election in each case, as provided in Clause (1) or (2) below:

            (1) The Company may elect to make payment of any Defaulted Interest
      to the Persons in whose names the Registered Securities of such series (or
      their respective Predecessor Securities) are registered at the close of
      business on a Special Record Date for the payment of such Defaulted
      Interest, which shall be fixed in the following manner. The Company shall
      notify the Trustee in writing of the amount of Defaulted Interest proposed
      to be paid on each Registered Security of such series and the date of the
      proposed payment, and at the same time the Company shall deposit with the
      Trustee an amount of money and/or, to the extent such Debt Securities are
      denominated and payable in Dollars only, Eligible Instruments the payments
      of principal and interest on which when due (and without reinvestment and
      providing no tax liability will be imposed upon the Trustee or the Holder
      of such Registered Securities) will provide money in such amounts as will
      (together with any money irrevocably deposited in trust with the Trustee,
      without investment) be equal to the aggregate amount proposed to be paid
      in respect of such Defaulted Interest or shall make arrangements
      satisfactory to the Trustee for such deposit prior to the date of the
      proposed payment, such money and/or Eligible Instruments when depos-


                                      -31-
<PAGE>   42
      ited to be held in trust for the benefit of the Persons entitled to such
      Defaulted Interest as in this Clause provided. Thereupon the Trustee shall
      fix a Special Record Date for the payment of such Defaulted Interest which
      shall be not more than 15 days and not less than 10 days prior to the date
      of the proposed payment and not less than 10 days after the receipt by the
      Trustee of the notice of the proposed payment. The Trustee shall promptly
      notify the Company of such Special Record Date. Unless the Trustee is
      acting as the Security Registrar, promptly after such Special Record Date,
      the Company shall furnish the Trustee with a list, or shall make
      arrangements satisfactory to the Trustee with respect thereto, of the
      names and addresses of, and principal amounts of Registered Securities of
      such series held by, the Holders appearing on the Security Register at the
      close of business on such Special Record Date. In the name and at the
      expense of the Company, the Trustee shall cause notice of the proposed
      payment of such Defaulted Interest and the Special Record Date therefor to
      be mailed, first-class postage prepaid, to each Holder of Registered
      Securities of such series at his address as it appears in the Security
      Register, not less than 10 days prior to such Special Record Date. Notice
      of the proposed payment of such Defaulted Interest and the Special Record
      Date therefor having been mailed as aforesaid, such Defaulted Interest
      shall be paid to the Persons in whose names the Registered Securities of
      such series (or their respective Predecessor Securities) are registered at
      the close of business on such Special Record Date and shall no longer be
      payable pursuant to the following Clause (2). In case a Bearer Security of
      any series is surrendered at the office or agency in a Place of Payment
      for such series in exchange for a Registered Security of such series after
      the close of business at such office or agency on any Special Record Date
      and before the opening of business at such office or agency on the related
      proposed date for payment of Defaulted Interest, such Bearer Security
      shall be surrendered without the coupon relating to such proposed date of
      payment and Defaulted Interest will not be payable on such proposed date
      of payment in respect of the Registered Security issued in exchange for
      such Bearer Security, but will be payable only to the Holder of such
      coupon when due in accordance with the provisions of this Indenture.

            (2) The Company may make payment of any Defaulted Interest on the
      Registered Securities of any series in any other lawful manner not
      inconsistent with the requirements of any securities exchange on which the
      Registered Securities may be listed, and upon such notice as may be
      required by such exchange, if, after notice given by the Company to the
      Trustee of the proposed payment pursuant to this Clause, such manner of
      payment shall be deemed practicable by the Trustee.

            Subject to the foregoing provisions of this Section, each Debt
Security delivered under this Indenture upon registration of transfer of or in
exchange for or in lieu of any other Debt Security shall carry the rights to
interest accrued and unpaid, and to accrue, which were carried by such other
Debt Security.

            Subject to the limitations set forth in Section 10.2, the Holder of
any coupon appertaining to a Bearer Security shall be entitled to receive the
interest payable on such coupon upon presentation and surrender of such coupon
on or after the Interest Payment Date of such coupon at an office or agency
maintained for such purpose pursuant to Section 10.2.


                                      -32-
<PAGE>   43
            If any Registered Security is exchanged for Capital Securities after
any record date and on or prior to the next succeeding Interest Payment Date
(other than any Debt Security whose Maturity is prior to such Interest Payment
Date), interest whose Stated Maturity is on such Interest Payment Date shall be
paid by the Company on such Interest Payment Date notwithstanding such exchange,
and such interest (whether or not punctually paid or duly provided for) shall be
paid to the Person in whose name that Debt Security is registered at the close
of business on such record date.

            If any Bearer Security is exchanged for Capital Securities after any
record date and on or prior to the next succeeding Interest Payment Date (other
than any Debt Security whose Maturity is prior to such Interest Payment Date),
interest whose Stated Maturity is on such Interest Payment Date shall be payable
on such Interest Payment Date notwithstanding such exchange, and such interest
(whether or not punctually paid or duly provided for) shall be paid by the
Company pursuant to such procedures as may be satisfactory to the Trustee.

            SECTION 3.8. Persons Deemed Owners.

            Prior to due presentment of a Registered Security for registration
of transfer, the Company, the Trustee and any agent of the Company or of the
Trustee may treat the Person in whose name such Registered Security is
registered as the owner of such Registered Security for the purpose of receiving
payment of principal of (and premium, if any) and (subject to Section 3.7)
interest on such Registered Security and for all other purposes whatsoever,
whether or not such Registered Security be overdue, and neither the Company, the
Trustee nor any agent of the Company or the Trustee shall be affected by notice
to the contrary.

            The Company, the Trustee and any agent of the Company or the Trustee
may treat the bearer of any Bearer Security and the bearer of any coupon as the
absolute owner of such Bearer Security or coupon for the purpose of receiving
payment thereof or on account thereof and for all other purposes whatsoever,
whether or not such Bearer Security or coupon be overdue, and neither the
Company, the Trustee nor any agent of the Company or the Trustee shall be
affected by notice to the contrary.

            None of the Company, the Trustee, any Paying Agent or the Security
Registrar will have any responsibility or liability for any aspect of the
records relating to or payments made on account of beneficial ownership
interests of a Global Security or for maintaining, supervising or reviewing any
records relating to such beneficial ownership interests.

            SECTION 3.9. Cancellation.

            Unless otherwise provided with respect to a series of Debt
Securities, all Debt Securities and coupons surrendered for payment, redemption,
repayment, transfer, exchange or credit against any sinking fund payment
pursuant to this Indenture, shall, if surrendered to the Company or any agent of
the Company, be delivered to the Trustee and shall be promptly cancelled by it.
The Company may at any time deliver to the Trustee for cancellation any Debt
Securities previously authenticated and delivered hereunder which the Company
may have acquired in any manner whatsoever, and all Debt Securities so delivered
shall be promptly


                                      -33-
<PAGE>   44
cancelled by the Trustee. No Debt Securities shall be authenticated in lieu of
or in exchange for any Debt Securities cancelled as provided in this Section,
except as expressly permitted by this Indenture. All cancelled Debt Securities
and coupons held by the Trustee shall be destroyed and certification of their
destruction delivered to the Company unless by a Company Order the Company shall
direct that the cancelled Debt Securities or coupons be returned to it.

            SECTION 3.10. Computation of Interest.

            Except as otherwise specified as contemplated by Section 3.1 for
Debt Securities of any series, interest on the Debt Securities of each series
shall be computed on the basis of a 360-day year of twelve 30-day months.

            SECTION 3.11. Certification by a Person Entitled to Delivery of a
Bearer Security.

            Whenever any provision of this Indenture or a Debt Security
contemplates that certification be given by a Person entitled to delivery of a
Bearer Security, such certification shall be provided substantially in the form
of Exhibit A-1 and, if applicable, A-2 hereto, with only such changes as shall
be approved by the Company and consented to by the Trustee whose consent shall
not unreasonably be withheld.

            SECTION 3.12. Judgments.

            The Company may provide, pursuant to Section 3.1, for the Debt
Securities of any series that, to the fullest extent possible under applicable
law and except as may otherwise be specified as contemplated in Section 3.1, (a)
the obligation, if any, of the Company to pay the principal of (and premium, if
any) and interest on the Debt Securities of any series and any appurtenant
coupons in a Foreign Currency, composite currency or Dollars (the "Designated
Currency") as may be specified pursuant to Section 3.1 is of the essence and
agrees that judgments in respect of such Debt Securities shall be given in the
Designated Currency; (b) the obligation of the Company to make payments in the
Designated Currency of the principal of (and premium, if any) and interest on
such Debt Securities and any appurtenant coupons shall, notwithstanding any
payment in any other currency (whether pursuant to a judgment or otherwise), be
discharged only to the extent of the amount in the Designated Currency that the
Holder receiving such payment may, in accordance with normal banking procedures,
purchase with the sum paid in such other currency (after any premium and cost of
exchange) in the country of issue of the Designated Currency in the case of
Foreign Currency or Dollars or in the international banking community in the
case of a composite currency on the Business Day immediately following the day
on which such Holder receives such payment; (c) if the amount in the Designated
Currency that may be so purchased for any reason falls short of the amount
originally due, the Company shall pay such additional amounts as may be
necessary to compensate for such shortfall; and (d) any obligation of the
Company not discharged by such payment shall be due as a separate and
independent obligation and, until discharged as provided herein, shall continue
in full force and effect.


                                      -34-
<PAGE>   45
                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

            SECTION 4.1. Satisfaction and Discharge of Indenture.

            This Indenture shall upon Company Request cease to be of further
effect, including the provisions of Article Eighteen hereof (except as to any
surviving rights of registration of transfer or exchange of Debt Securities
herein expressly provided for and rights to receive payments of principal and
interest thereon and any right to receive additional amounts, as provided in
Section 10.6) and the Trustee, at the expense of the Company, shall execute
proper instruments acknowledging satisfaction and discharge of this Indenture
when

            (1)   either

                  (A) all Debt Securities theretofore authenticated and
            delivered and all coupons appertaining thereto (other than (i)
            coupons appertaining to Bearer Securities surrendered in exchange
            for Registered Securities and maturing after such exchange,
            surrender of which is not required or has been waived as provided in
            Section 3.5, (ii) Debt Securities and coupons which have been
            destroyed, lost or stolen and which have been replaced or paid as
            provided in Section 3.6, (iii) coupons appertaining to Bearer
            Securities called for redemption or surrendered for repayment and
            maturing after the relevant Redemption Date or Repayment Date, as
            appropriate, surrender of which has been waived as provided in
            Section 11.6 or 13.3 and (iv) Debt Securities and coupons for whose
            payment money and/or Eligible Instruments have theretofore been
            deposited in trust or segregated and held in trust by the Company
            and thereafter repaid to the Company or discharged from such trust,
            as provided in Section 10.3) have been delivered to the Trustee
            cancelled or for cancellation; or

                  (B) all such Debt Securities not theretofore delivered to the
            Trustee for cancellation

                        (i)   have become due and payable, or

                        (ii) will become due and payable at their Stated
                  Maturity within one year, or

                        (iii) are to be called for redemption within one year
                  under arrangements satisfactory to the Trustee for the giving
                  of notice by the Trustee in the name, and at the expense, of
                  the Company,

            and the Company, in the case of (B)(i), (B)(ii) or (B)(iii) above,
            has irrevocably deposited or caused to be deposited with the Trustee
            as trust funds in trust for the purpose money and/or, to the extent
            such Debt Securities are denominated and payable in Dollars only,
            Eligible Instruments the payments of principal and inter-


                                      -35-
<PAGE>   46
            est on which when due (and without reinvestment and providing no tax
            liability will be imposed upon the Trustee or the Holders of Debt
            Securities) will provide money in such amounts as will (together
            with any money irrevocably deposited in trust with the Trustee,
            without investment) be sufficient to pay and discharge the entire
            indebtedness on such Debt Securities and coupons of such series for
            principal (and premium, if any) and interest, and any mandatory
            sinking fund, repayment or analogous payments thereon, on the
            scheduled due dates therefor to the date of such deposit (in the
            case of Debt Securities and coupons which have become due and
            payable) or to the Stated Maturity or Redemption Date, if any, and
            all Repayment Dates (in the case of Debt Securities repayable at the
            option of the Holders thereof); provided, however, that in the event
            a petition for relief under the Bankruptcy Reform Act of 1978 or a
            successor statute is filed with respect to the Company within 91
            days after the deposit, the obligations of the Company under the
            Indenture with respect to the Debt Securities of such series shall
            not be deemed terminated or discharged, and in such event the
            Trustee shall be required to return the deposited money and Eligible
            Instruments to the Company,

            (2) the Company has paid or caused to be paid all other sums payable
      hereunder by the Company,

            (3) the Company has delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel each stating that all conditions
      precedent herein provided for relating to the satisfaction and discharge
      of this Indenture have been complied with, and

            (4) in the case of a deposit and discharge pursuant to Subclause (B)
      of Clause (1) of this Section the Company has delivered to the Trustee an
      Opinion of Counsel to the effect that the Company has received from or
      there has been published by the Internal Revenue Service a ruling to the
      effect that Holders of the Debt Securities of the series will not
      recognize income, gain or loss for U.S. Federal income tax purposes as a
      result of such deposit and discharge.

Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 6.7 and, if money or
Eligible Instruments shall have been deposited with the Trustee pursuant to
Subclause (B) of Clause (1) of this Section, the obligations of the Trustee
under Section 4.2 and the last paragraph of Section 10.3 shall survive.

            SECTION 4.2. Application of Trust Money and Eligible Instruments.

            Subject to the provisions of the last paragraph of Section 10.3, all
money and Eligible Instruments deposited with the Trustee pursuant to Section
4.1, 4.3 or 17.1 shall be held in trust and such money and the principal and
interest received on such Eligible Instruments shall be applied by it, in
accordance with the provisions of the Debt Securities, the coupons and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal (and premium, if
any) and interest for whose payment such money or Eligible


                                      -36-
<PAGE>   47
Instruments have been deposited with the Trustee. Money or Eligible Instruments
deposited and held in trust pursuant to this Section shall not be subject to
claims of the holders of Senior Debt.

            SECTION 4.3. Satisfaction, Discharge and Defeasance of Debt
Securities of any Series.

            If this Section 4.3 is specified, as contemplated by Section 3.1, to
be applicable to Debt Securities of any series, then, notwithstanding Section
4.1, (i) the Company shall be deemed to have paid and discharged the entire
indebtedness on all the Outstanding Debt Securities of any such series and
related coupons; (ii) the provisions of this Indenture as it relates to such
Outstanding Debt Securities and related coupons shall no longer be in effect,
including the provisions of Article Eighteen hereof (except as to the rights of
Holders of Debt Securities to receive, from the trust fund described in
subparagraph (1) below, payment of (x) the principal of (and premium, if any)
and any installment of principal of (and premium, if any) or interest on such
Debt Securities and related coupons on the Stated Maturity of such principal
(and premium, if any) or installment of principal (and premium, if any) or
interest or (y) any mandatory sinking fund payments or analogous payments
applicable to the Debt Securities of that series on that day on which such
payments are due and payable in accordance with the terms of this Indenture and
of such Debt Securities, the Company's obligations with respect to such Debt
Securities under Sections 3.4, 3.5, 3.6, 10.2, 10.3 and 10.6 and the rights,
powers, trusts, duties and immunities of the Trustee hereunder, including those
under Section 6.7 hereof); and (iii) the Trustee, at the expense of the Company,
shall, upon Company Order, execute proper instruments acknowledging satisfaction
and discharge of such indebtedness, when

            (1)   either

                  (A) with respect to all Outstanding Debt Securities of such
            series and related coupons, with reference to this Section 4.3, the
            Company has deposited or caused to be deposited with the Trustee
            irrevocably, as trust funds in trust, money and/or, to the extent
            such Debt Securities are denominated and payable in Dollars only,
            Eligible Instruments the payments of principal and interest on which
            when due (and without reinvestment and providing no tax liability
            will be imposed upon the Trustee or the Holders of such Debt
            Securities) will provide money in such amounts as will (together
            with any money irrevocably deposited in trust with the Trustee,
            without investment) be sufficient to pay and discharge (i) the
            principal of (and premium, if any) and interest on the Outstanding
            Debt Securities of that series and related coupons on the Stated
            Maturity of such principal or interest and (ii) any mandatory
            sinking fund payments or analogous payments applicable to Debt
            Securities of such series on the date on which such payments are due
            and payable in accordance with the terms of this Indenture and of
            such Debt Securities; or

                  (B) the Company has properly fulfilled such other means of
            satisfaction and discharge as is specified, as contemplated by
            Section 3.1, to be applicable to the Debt Securities of such series;


                                      -37-
<PAGE>   48
            (2) the Company has paid or caused to be paid all sums payable with
      respect to the Outstanding Debt Securities of such series and related
      coupons;

            (3) such deposit will not result in a breach of, or constitute a
      default under, this Indenture or any other agreement or instrument to
      which the Company is a party or by which it is bound;

            (4) no Event of Default or event which with the giving of notice or
      lapse of time, or both, would become an Event of Default with respect to
      the Debt Securities of such series shall have occurred and be continuing
      on the date of such deposit and no Event of Default under Section 5.1(1)
      or Section 5.1(2) or event which with the giving of notice or lapse of
      time, or both, would become an Event of Default under Section 5.1(1) or
      Section 5.1(2) shall have occurred and be continuing on the 91st day after
      such date;

            (5) the Company has delivered to the Trustee an Opinion of Counsel
      to the effect that (a) the Company has received from, or there has been
      published by, the Internal Revenue Service a ruling, or (b) since the date
      of this Indenture there has been a change in applicable Federal income tax
      law, in either case to the effect that, and based thereon such Opinion of
      Counsel shall confirm that, the Holders of Debt Securities and related
      coupons of such series will not recognize income, gain or loss for Federal
      income tax purposes as a result of such deposit, defeasance and discharge
      and will be subject to Federal income tax on the same amount and in the
      same manner and at the same times as would have been the case if such
      deposit, defeasance and discharge had not occurred;

            (6) if the Debt Securities of that series are then listed on any
      domestic or foreign securities exchange, the Company shall have delivered
      to the Trustee an Opinion of Counsel to the effect that such deposit,
      defeasance and discharge will not cause such Debt Securities to be
      delisted; and

            (7) the Company has delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel, each stating that all conditions
      precedent herein provided for relating to the satisfaction and discharge
      of the entire indebtedness of all Outstanding Debt Securities and related
      coupons have been complied with.

            Any deposits with the Trustee referred to in Section 4.3(1)(A) above
shall be irrevocable and shall be made under the terms of an escrow trust
agreement in form and substance satisfactory to the Trustee. If any Outstanding
Debt Securities of such series are to be redeemed prior to their Stated
Maturity, whether pursuant to any optional redemption provisions or in
accordance with any mandatory sinking fund requirement, the applicable escrow
trust agreement shall provide therefor and the Company shall make such
arrangements as are satisfactory to the Trustee for the giving of notice of
redemption by the Trustee in the name, and at the expense, of the Company.

            Upon the satisfaction of the conditions set forth in this Section
4.3 with respect to all the Outstanding Debt Securities of any series, the terms
and conditions of such series, including the terms and conditions with respect
thereto set forth in this Indenture, shall no longer


                                      -38-
<PAGE>   49
be binding upon, or applicable to, the Company; provided that the Company shall
not be discharged from any payment obligations in respect of Debt Securities of
such series which are deemed not to be Outstanding under clause (iii) of the
definition thereof if such obligations continue to be valid obligations of the
Company under applicable law.

            Notwithstanding the cessation, termination and discharge of all
obligations, covenants and agreements (except as provided above in this Section
4.3) of the Company under this Indenture with respect to any series of Debt
Securities, the obligations of the Company to the Trustee under Section 6.7, and
the obligations of the Trustee under Section 4.2 and the last paragraph of
Section 10.3, shall survive with respect to such series of Debt Securities.


                                  ARTICLE FIVE

                                    REMEDIES

            SECTION 5.1. Events of Default.

            "Event of Default", wherever used herein with respect to Debt
Securities of any series, means any one of the following events (whatever the
reason for such Event of Default and whether it shall be voluntary or
involuntary or be effected by operation of law, pursuant to any judgment, decree
or order of any court or any order, rule or regulation of any administrative or
governmental body):

            (1) the entry by a court or a governmental authority having
      jurisdiction in the premises of (A) a decree or order for relief in
      respect of the Company in an involuntary case or proceeding under any
      applicable Federal or State bankruptcy, insolvency, reorganization or
      other similar law or (B) a decree or order adjudging the Company a
      bankrupt or insolvent, or approving as properly filed a petition seeking
      reorganization, arrangement, adjustment or composition of or in respect of
      the Company under any applicable Federal or State law, or appointing a
      custodian, receiver, liquidator, assignee, trustee, sequestrator or other
      similar official of the Company or substantially all of its assets or
      ordering the winding up or liquidation of the affairs of the Company, and
      the continuance of any such decree or order for relief or any such other
      decree or order unstayed and in effect for a period of 60 consecutive
      days; or

            (2) the commencement by the Company of a voluntary case or
      proceeding under any applicable Federal or State bankruptcy, insolvency,
      reorganization or other similar law or of any other case or proceeding to
      be adjudicated a bankrupt or insolvent, or the consent by it to the entry
      of a decree or order for relief in respect of the Company in an
      involuntary case or proceeding under any applicable Federal or State
      bankruptcy, insolvency, reorganization or other similar law or to the
      commencement of any bankruptcy or insolvency case or proceeding against
      it, or the filing by it of a petition or answer or consent seeking
      reorganization or relief under any applicable Federal or State law, or the
      consent by it to the filing of such petition or to the appointment of or
      taking possession


                                      -39-
<PAGE>   50
      by a custodian, receiver, liquidator, assignee, trustee, sequestrator or
      other similar official of the Company or substantially all of its assets;
      or

            (3) any other Event of Default, if any, provided with respect to
      Debt Securities of such series specified as contemplated by Section 3.1.

            SECTION 5.2. Acceleration of Maturity; Rescission and Annulment.

            If an Event of Default with respect to Debt Securities of any series
at the time Outstanding occurs and its continuing, then and in every such case
the Trustee or the Holders of not less than 25% in principal amount of
Outstanding Debt Securities of such series may declare the principal amount (or,
if the Debt Securities of such series are Original Issue Discount Securities,
such portion of the principal amount as may be specified in the terms of such
series) of and all accrued but unpaid interest on all the Debt Securities of
such series to be due and payable immediately, by a notice in writing to the
Company (and to the Trustee if given by such Holders), and upon any such
declaration such principal amount (or specified amount) shall become immediately
due and payable.

            At any time after such a declaration of acceleration with respect to
Debt Securities of any series has been made and before a judgment or decree for
payment of the money due has been obtained by the Trustee as hereinafter in this
Article provided, the Holders of a majority in principal amount of the
Outstanding Debt Securities of such series, by written notice to the Company and
the Trustee, may rescind and annul such declaration and its consequences if

            (1) the Company has paid or deposited with the Trustee a sum
      sufficient to pay

                  (A) all overdue installments of interest on all Debt
            Securities of such series and any related coupons,

                  (B) the principal of (and premium, if any, on) any Debt
            Securities of such series which have become due otherwise than by
            such declaration of acceleration and interest thereon at the rate or
            rates prescribed therefor in such Debt Securities,

                  (C) to the extent that payment of such interest is lawful,
            interest upon overdue installments of interest on each Debt Security
            and any related coupons at the rate or rates prescribed therefor in
            such Debt Securities, and

                  (D) all sums paid or advanced by the Trustee hereunder and the
            reasonable compensation, expense, disbursements and advances of the
            Trustee, its agents and counsel;

                  and


                                      -40-
<PAGE>   51
            (2) all Events of Default with respect to Debt Securities of such
      series have been cured or waived as provided in Section 5.13.

            No such rescission shall affect any subsequent default or impair any
right consequent thereon.

            SECTION 5.3. Collection of Indebtedness and Suits for Enforcement by
Trustee.

            The Company covenants that if:

            (1) default is made in the payment of any installment of interest on
      any Debt Security or any related coupon when such interest becomes due and
      payable and such default continues for a period of 30 days, or

            (2) default is made in the payment of the principal of (or premium,
      if any, on) any Debt Security at the Maturity thereof, or

            (3) default is made in the deposit of any sinking fund payment, when
      and as due by the terms of a Debt Security of such series, or

            (4) default is made in any required designation of funds as
      Securities Funds, or

            (5) default is made in the performance, or breach, of any covenant
      or warranty of the Company in this Indenture (other than a covenant or
      warranty a default in whose performance or whose breach is elsewhere in
      this Section specifically dealt with or which has been expressly included
      in this Indenture solely for the benefit of series of Debt Securities
      other than such series), and such default or breach continues for a period
      of 30 days after there has been given, by registered or certified mail, to
      the Company by the Trustee or to the Company and the Trustee by the
      Holders of at least 25% in principal amount of the Outstanding Debt
      Securities of such series a written notice specifying such default or
      breach and requiring it to be remedied and stating that such notice is a
      "Notice of Default" hereunder,

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Debt Securities and coupons, the amount then due and payable on
such Debt Securities and coupons for principal (and premium, if any) and
interest, sinking fund installment and interest, including the delivery of any
Capital Securities then required to be delivered, and, to the extent that
payment of such interest shall be legally enforceable, interest upon the overdue
principal (and premium, if any) and, upon overdue installments of interest, at
the rate or rates prescribed therefor in such Debt Securities, and, in addition
thereto, such further amount as shall be sufficient to cover the costs and
expenses of collection, including the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel.

            If the Company fails to pay such amounts (including the delivery of
any Capital Securities then required to be delivered) forthwith upon such
demand, the Trustee, in its own


                                      -41-
<PAGE>   52
name and as trustee of an express trust, may institute a judicial proceeding for
the collection of the sums so due and unpaid and the delivery of any Capital
Securities required to be delivered and not so delivered, or, in the case of the
failure to deliver Capital Securities, money equal to the principal amount of
the Debt Securities for which the Capital Securities were to be exchanged, and
may prosecute such proceeding to judgment of final decree, and may enforce the
same against the Company or any other obligor upon such Debt Securities and
coupons and collect the moneys (or money equal to the principal amount of any
Debt Securities for which Capital Securities were to be exchanged) adjudged or
decreed to be payable in the manner provided by law out of the property of the
Company or any other obligor upon such Debt Securities and coupons, wherever
situated.

            If a Default with respect to Debt Securities of any series occurs
and is continuing, the Trustee may in its discretion proceed to protect and
enforce its rights and the rights of the Holders of Debt Securities of such
series and any related coupons by such appropriate judicial proceedings as the
Trustee shall deem most effectual to protect and enforce any such rights,
whether for the specific enforcement of any covenant or agreement in this
Indenture or in aid of the exercise of any power granted herein, or to enforce
any other proper remedy.

            SECTION 5.4. Trustee May File Proofs of Claim.

            In case of the pendency of any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or
other judicial proceedings, or any voluntary or involuntary case under the
Federal bankruptcy laws as now or hereafter constituted, relative to the Company
or any other obligor upon the Debt Securities of a particular series or any
related coupons or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal of such Debt
Securities shall then be due and payable as therein expressed or by declaration
or otherwise and irrespective of whether the Trustee shall have made any demand
on the Company for the payment of overdue principal or interest) shall be
entitled and empowered, by intervention in such proceedings or otherwise,

            (1) to file and prove a claim for the whole amount of principal (and
      premium, if any) and interest owing and unpaid in respect of the Debt
      Securities of such series and any appurtenant coupons to file such other
      papers or documents as may be necessary or advisable and to take any and
      all other actions under the Trust Indenture Act in order to have the
      claims of the Trustee (including any claim for the reasonable
      compensation, expenses, disbursements and advances of the Trustee, its
      agents and counsel) and of the Holders allowed in such judicial
      proceeding, and

            (2) to collect and receive any moneys or other property payable or
      deliverable on any such claims and to distribute the same; and any
      receiver, assignee, trustee, custodian, liquidator, sequestrator or other
      similar official in any such proceeding is hereby authorized by each
      Holder to make such payments to the Trustee, and in the event that the
      Trustee shall consent to the making of such payments directly to the
      Holders, to pay to the Trustee any amount due it for the reasonable
      compensation, expenses, disbursements


                                      -42-
<PAGE>   53
      and advances of the Trustee, its agents and counsel, and any other amounts
      due the Trustee under Section 6.7.

            Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the Debt
Securities or coupons or the rights of any Holder thereof, or to authorize the
Trustee to vote in respect of the claim of any Holder in any such proceeding.

            SECTION 5.5. Trustee May Enforce Claims Without Possession of Debt
Securities or Coupons.

            All rights of action and claims under this Indenture or the Debt
Securities or coupons may be prosecuted and enforced by the Trustee without the
possession of any of the Debt Securities or coupons or the production thereof in
any proceeding relating thereto, and any such proceeding instituted by the
Trustee shall be brought in its own name, as trustee of an express trust, and
any recovery of judgment shall, after provision for the payment of the
reasonable compensation, expenses, disbursements and advances of the Trustee,
its agents and counsel, be for the ratable benefit of the Holders of the Debt
Securities and coupons in respect of which such judgment has been recovered.

            SECTION 5.6. Application of Money Collected.

            Any money collected by the Trustee pursuant to this Article shall be
applied in the following order, at the date or dates fixed by the Trustee and,
in case of the distribution of such money on account of principal (and premium,
if any) or interest, upon presentation of the Debt Securities or coupons, or
both, as the case may be, and the notation thereon of the payment if only
partially paid and upon surrender thereof if fully paid:

            FIRST: To the payment of all amounts due the Trustee under Section
6.7;

            SECOND: To the payment of amounts then due and unpaid to the holders
      of Senior Debt, to the extent required by Article Eighteen;

            THIRD: To the payment of the amounts then due and unpaid for
      principal of (and premium, if any) and interest on the Debt Securities and
      any coupons, in respect of which or for the benefit of which such money
      has been collected ratably, without preference or priority of any kind,
      according to the amounts due and payable on such Debt Securities and any
      coupons for principal (and premium, if any) and interest, respectively.
      The Holders of each series of Debt Securities denominated in Euros, any
      other composite currency or a Foreign Currency and any matured coupons
      relating thereto shall be entitled to receive a ratable portion of the
      amount determined by the Exchange Rate Agent by converting the principal
      amount Outstanding of such series of Debt Securities and matured but
      unpaid interest on such series of Debt Securities in the currency in which
      such series of Debt Securities is denominated into Dollars at the Exchange
      Rate as of the date of declaration of acceleration of the Maturity of the
      Debt Securities; and


                                      -43-
<PAGE>   54
            FOURTH: The balance, if any, to the Person or Persons entitled
      thereto.

            SECTION 5.7. Limitation on Suits.

            No Holder of any Debt Securities of any series or any related
coupons shall have any right to institute any proceeding, judicial or otherwise,
with respect to this Indenture, or for the appointment of a receiver or trustee,
or for any other remedy hereunder, unless

            (1) such Holder has previously given written notice to the Trustee
      of a continuing Default with respect to the Debt Securities of such
      series;

            (2) the Holders of not less than 25% in principal amount of the
      Outstanding Debt Securities of such series shall have made written request
      to the Trustee to institute proceedings in respect of such Default in its
      own name as Trustee hereunder;

            (3) such Holder or Holders have offered to the Trustee reasonable
      indemnity against the costs, expenses and liabilities to be incurred in
      compliance with such request;

            (4) the Trustee for 60 days after its receipt of such notice,
      request and offer of indemnity has failed to institute any such
      proceeding; and

            (5) no direction inconsistent with such written request has been
      given to the Trustee during such 60-day period by the Holders of a
      majority in principal amount of the Outstanding Debt Securities of such
      series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other such
Holders, or to obtain or to seek to obtain priority or preference over any other
of such Holders or to enforce any right under this Indenture, except in the
manner herein provided and for the equal and ratable benefit of all of such
Holders.

            SECTION 5.8. Unconditional Right of Holders to Receive Principal,
Premium and Interest and to Exchange Debt Securities for Capital Securities.

            Notwithstanding any other provision in this Indenture, the Holder of
any Debt Security or coupon shall have the right which is absolute and
unconditional to receive payment of the principal of (and premium, if any) and
(subject to Section 3.7) interest on such Debt Security or payment of such
coupon on the respective Stated Maturity or Maturities expressed in such Debt
Security or coupon (or, in the case of redemption or repayment, on the
Redemption Date or the Repayment Date, as the case may be), to have the Debt
Securities exchanged for Capital Securities pursuant to Article Fourteen, if
applicable, and to institute suit for the enforcement of any such payment or
exchange, and such right shall not be impaired without the consent of such
Holder, subject, however, to the provisions of Article Eighteen.


                                      -44-
<PAGE>   55
            SECTION 5.9. Restoration of Rights and Remedies.

            If the Trustee or any Holder has instituted any proceedings to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case the Company, the
Trustee and the Holders shall, subject to any determination in such proceeding,
be restored severally and respectively to their former positions hereunder, and
thereafter all rights and remedies of the Trustee and the Holders shall continue
as though no such proceeding had been instituted.

            SECTION 5.10. Rights and Remedies Cumulative.

            Except as otherwise provided in Section 3.6, no right or remedy
herein conferred upon or reserved to the Trustee or to the Holders is intended
to be exclusive of any other right or remedy, and every right and remedy shall,
to the extent permitted by law, be cumulative and in addition to every other
right and remedy given hereunder or now or hereafter existing at law or in
equity or otherwise. The assertion or employment of any right or remedy
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

            SECTION 5.11. Delay or Omission Not Waiver.

            No delay or omission of the Trustee or of any Holder of any Debt
Security or coupon to exercise any right or remedy accruing upon any Event of
Default shall impair any such right or remedy or constitute a waiver of any such
Event of Default or an acquiescence therein. Every right and remedy given by
this Article or by law to the Trustee or to the Holders may be exercised from
time to time, and as often as may be deemed expedient, by the Trustee or by the
Holders, as the case may be.

            SECTION 5.12. Control by Holders of Debt Securities.

            The Holders of a majority in principal amount of the Outstanding
Debt Securities of any series shall have the right to direct the time, method
and place of conducting any proceeding for any remedy available to the Trustee
or exercising any trust or power conferred on the Trustee with respect to the
Debt Securities of such series, provided, that

            (1) such direction shall not be in conflict with any rule of law or
      with this Indenture;

            (2) subject to the provisions of Section 6.1, the Trustee shall have
      the right to decline to follow any such direction if the Trustee in good
      faith shall, by a Responsible Officer or Responsible Officers of the
      Trustee, determine that the proceedings so directed would be unjustly
      prejudicial to the Holders of Debt Securities of such series not joining
      in any such direction; and


                                      -45-
<PAGE>   56
            (3) the Trustee may take any other action deemed proper by the
      Trustee which is not inconsistent with such direction.

            SECTION 5.13. Waiver of Past Defaults.

            The Holders of not less than a majority in principal amount of the
Outstanding Debt Securities of any series may on behalf of the Holders of all
the Debt Securities of any such series and any related coupons waive any past
default hereunder with respect to such series and its consequences, except a
default

            (1) in the payment of the principal of (or premium, if any) or
      interest on any Debt Security of such series, or in the payment of any
      sinking fund or analogous obligation with respect to the Debt Securities
      of such series, or

            (2) in respect of a covenant or provision hereof which under Article
      Nine cannot be modified or amended without the consent of the Holder of
      each Outstanding Debt Security of such series or coupons affected.

            Upon any such waiver, such default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon.

            SECTION 5.14. Undertaking for Costs.

            All parties to this Indenture agree, and each Holder of any Debt
Security or coupon by his acceptance thereof shall be deemed to have agreed,
that any court may in its discretion require, in any suit for the enforcement of
any right or remedy under this Indenture, or in any suit against the Trustee for
any action taken, suffered or omitted by it as Trustee, the filing by any party
litigant in such suit of an undertaking to pay the costs of such suit, and that
such court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having a due regard to
the merits and good faith of the claims or defenses made by such party litigant,
but the provisions of this Section shall not apply to any suit instituted by the
Trustee, to any suit instituted by any Holder, or group of Holders, holding in
the aggregate more than 10% in principal amount of the Outstanding Debt
Securities of any series, or to any suit instituted by any Holder for the
enforcement of the payment of the principal of (or premium, if any) or interest
on any Debt Security or the payment of any coupons on or after the respective
Stated Maturity or Maturities expressed in such Debt Security or coupon (or, in
the case of redemption or repayment, on or after the Redemption Date or
Repayment Date, as the case may be) or for the enforcement of the right to
exchange any Debt Securities for Capital Securities as provided in Article
Fourteen.

            SECTION 5.15. Waiver of Stay or Extension Laws.

            The Company covenants (to the extent that it may lawfully do so)
that it will not at any time insist upon, or plead, or in any manner whatsoever
claim or take the benefit or


                                      -46-
<PAGE>   57
advantage of, any stay or extension law whenever enacted, now or at any time
hereafter in force, which may affect the covenants or the performance of this
Indenture; and the Company (to the extent that it may lawfully do so) hereby
expressly waives all benefits or advantage of any such law, and covenants that
it will not hinder, delay or impede the execution of any power herein granted to
the Trustee, but will suffer and permit the execution of every such power as
though no such law had been enacted.


                                   ARTICLE SIX

                                   THE TRUSTEE

            SECTION 6.1. Certain Duties And Responsibilities.

            The duties and responsibilities of the Trustee shall be as provided
in the Trust Indenture Act. Notwithstanding the foregoing, no provision of this
Indenture shall require the Trustee to expend or risk its own funds or otherwise
incur any financial liability in the performance of any of its duties hereunder,
or in the exercise of any of its rights or powers, if it shall have reasonable
grounds for believing that repayment of such funds or adequate indemnity against
such risk or liability is not reasonably assured to it. Whether or not therein
expressly so provided, every provision of this Indenture relating to the conduct
or affecting the liability of or affording protection to the Trustee shall be
subject to the provisions of this Section.

            SECTION 6.2. Notice of Default.

            If a default occurs hereunder with respect to Debt Securities of any
series and is not cured or waived, the Trustee shall transmit by mail to all
Holders of Debt Securities of such series notice of such default as and to the
extent provided by the Trust Indenture Act; provided, however, that, except in
the case of a default in the payment of the principal of (or premium, if any) or
interest on any Debt Security of such series or any related coupons or in the
payment of any sinking fund installment with respect to Debt Securities of such
series or in the exchange of Capital Securities for Debt Securities of such
series, the Trustee shall be protected in withholding such notice if and so long
as the board of directors, the executive committee or a trust committee of
directors and/or Responsible Officers of the Trustee in good faith determines
that the withholding of such notice is in the interest of the Holders of Debt
Securities of such series. For the purpose of this Section, the term "default"
means any event which is, or after notice or lapse of time or both would become,
a Default with respect to Debt Securities of such series.

            SECTION 6.3. Certain Rights of Trustee.

            Except as otherwise provided in Section 6.1:

            (a) the Trustee may rely and shall be protected in acting or
refraining from acting upon any resolution, certificate, statement, instrument,
opinion, report, notice, request, direction, consent, order, bond, debenture,
note, coupon or other paper or document believed by it to be genuine and to have
been signed or presented by the proper party or parties;


                                      -47-
<PAGE>   58
            (b) any request or direction of the Company mentioned herein shall
be sufficiently evidenced by a Company Request or Company Order and any
resolution of the Board of Directors shall be sufficiently evidenced by a Board
Resolution;

            (c) whenever in the administration of this Indenture the Trustee
shall deem it desirable that a matter be proved or established prior to taking,
suffering or omitting any action hereunder, the Trustee (unless other evidence
be herein specifically prescribed) may, in the absence of bad faith on its part,
rely upon an Officers' Certificate;

            (d) the Trustee may consult with counsel and the advice of such
counsel or any Opinion of Counsel shall be full and complete authorization and
protection in respect of any action taken, suffered or omitted by it hereunder
in good faith and in reliance thereon;

            (e) the Trustee shall be under no obligation to exercise any of the
rights or powers vested in it by this Indenture at the request or direction of
any of the Holders of Debt Securities of such series or any related coupons
pursuant to this Indenture, unless such Holders shall have offered to the
Trustee reasonable security or indemnity against the costs, expenses and
liabilities which might be incurred by it in compliance with such request or
direction;

            (f) the Trustee shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond,
debenture, note, coupon, other evidence of indebtedness or other paper or
document, but the Trustee, in its discretion, may make such further inquiry or
investigation into such facts or matters as it may see fit, and, if the Trustee
shall determine to make such further inquiry or investigation, it shall be
entitled to examine the books, records and premises of the Company, personally
or by agent or attorney, other than any such books or records containing
information as to the affairs of the customers of the Company or any of its
subsidiaries; provided that the Trustee may examine such books and records
relating to customers to the extent that such books and records contain
information as to any payments made to such customers in their capacity as
Holders of Debt Securities; and

            (g) the Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents or
attorneys and the Trustee shall not be responsible for any misconduct or
negligence on the part of any agent or attorney appointed with due care by it
hereunder; no Exchange Rate Agent, Capital Exchange Agent, Global Exchange
Agent, Depositary or Paying Agent shall be deemed an agent of the Trustee and
the Trustee shall not be responsible for any act or omission by any of them.

            SECTION 6.4. Not Responsible for Recitals or Issuance of Debt
Securities.

            The recitals contained herein and in the Debt Securities, except the
Trustee's certificates of authentication, and in any coupons, and the
information in any registration statement, including all attachments thereto,
except information provided by the Trustee therein, shall be taken as the
statements of the Company, and the Trustee assumes no responsibility for their
correctness. The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of the Debt Securities of any series or any
coupons or any Capital Securities. The


                                      -48-
<PAGE>   59
Trustee shall not be accountable for the use or application by the Company of
any Debt Securities or the proceeds thereof. The Trustee shall not be
responsible for and makes no representations to the Company's ability or
authority to issue Bearer Securities or the lawfulness thereof.

            SECTION 6.5. May Hold Debt Securities or Coupons.

            The Trustee, any Paying Agent, the Security Registrar or any other
agent of the Company or the Trustee, in its individual or any other capacity,
may become the owner or pledgee of Debt Securities and coupons, and, subject to
Sections 6.8 and 6.13, may otherwise deal with the Company with the same rights
it would have if it were not Trustee, Paying Agent, Security Registrar or such
agent.

            SECTION 6.6. Money Held in Trust.

            Money held by the Trustee or any Paying Agent in trust hereunder
need not be segregated from other funds except to the extent required by law.
Neither the Trustee nor any Paying Agent shall be under any liability for
interest on any money received by it hereunder except as otherwise agreed with
the Company.

            SECTION 6.7. Compensation and Reimbursement.

            The Company agrees

            (1) to pay to the Trustee from time to time reasonable compensation
      for all services rendered by it hereunder (which compensation shall not be
      limited by any provision of law in regard to the compensation of a trustee
      of an express trust);

            (2) except as otherwise expressly provided herein, to reimburse the
      Trustee upon its request for all reasonable expenses, disbursements and
      advances incurred or made by the Trustee in accordance with any provision
      of this Indenture (including the reasonable compensation and the expenses
      and disbursements of its agents and counsel), except any such expense,
      disbursement or advance as may be attributable to its negligence or bad
      faith; and

            (3) to indemnify the Trustee for, and to hold it harmless against,
      any loss, liability or expense incurred without negligence or bad faith on
      its part, arising out of or in connection with the acceptance or
      administration of this trust or performance of its duties hereunder,
      including the costs and expenses of defending itself against any claim or
      liability in connection with the exercise or performance of any of its
      powers or duties hereunder.

            As security for the performance of the obligations of the Company
under this Section the Trustee shall have a claim prior to the Debt Securities
and any coupons upon all property and funds held or collected by the Trustee as
such, except funds held in trust for the payment of principal of (and premium,
if any) or interest on particular Debt Securities or any


                                      -49-
<PAGE>   60
coupons. The claims of the Trustee under this Section shall not be subject to
the provisions of Article Eighteen.

            SECTION 6.8. Disqualification; Conflicting Interests.

            If the Trustee has or shall acquire any conflicting interest within
the meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act and this Indenture.

            SECTION 6.9. Corporate Trustee Required; Eligibility.

            There shall at all times be a Trustee hereunder which shall be a
corporation that is eligible pursuant to the Trust Indenture Act to act as such
and organized and doing business under the laws of the United States, any State
thereof or the District of Columbia, authorized under such laws to exercise
corporate trust powers, having a combined capital and surplus of at least
$50,000,000, and subject to supervision or examination by Federal or State
authority. If such corporation publishes reports of condition at least annually,
pursuant to law or to the requirements of the aforesaid supervising or examining
authority, then for the purposes of this Section, the combined capital and
surplus of such corporation shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. If at
any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section, it shall resign immediately in the manner and with
the effect hereinafter specified in this Article.

            SECTION 6.10. Resignation and Removal; Appointment of Successor.

            (a) No resignation or removal of the Trustee and no appointment of a
successor Trustee pursuant to this Article shall become effective until the
acceptance of appointment by the successor Trustee under Section 6.11.

            (b) The Trustee may resign at any time with respect to the Debt
Securities of one or more series by giving written notice thereof to the
Company. If an instrument of acceptance by a successor Trustee shall not have
been delivered to the Trustee within 30 days after the giving of such notice of
resignation, the resigning Trustee may petition any court of competent
jurisdiction for the appointment of a successor Trustee with respect to the Debt
Securities of such series.

            (c) The Trustee may be removed at any time with respect to the Debt
Securities of any series by Act of the Holders of a majority in principal amount
of the Outstanding Debt Securities of such series, delivered to the Trustee and
to the Company.

            (d) If at any time:

            (1) the Trustee shall fail to comply with Section 6.8 with respect
      to the Debt Securities of any series after written request therefor by the
      Company or by any Holder


                                      -50-
<PAGE>   61
      who has been a bona fide Holder of a Debt Security of such series for at
      least six months, or

            (2) the Trustee shall cease to be eligible under Section 6.9 with
      respect to any series of Debt Securities and shall fail to resign after
      written request therefor by the Company or by any such Holder, or

            (3) the Trustee shall become incapable of acting with respect to any
      series of Debt Securities or a decree or order for relief by a court
      having jurisdiction in the premises shall have been entered in respect of
      the Trustee in an involuntary case under the Federal bankruptcy laws, as
      now or hereafter constituted, or any other applicable Federal or State
      bankruptcy, insolvency or similar law; or a decree or order by a court
      having jurisdiction in the premises shall have been entered for the
      appointment of a receiver, custodian, liquidator, assignee, trustee,
      sequestrator or other similar official of the Trustee or of its property
      or affairs, or any public officer shall take charge or control of the
      Trustee or of its property or affairs for the purpose of rehabilitation,
      conservation, winding up or liquidation, or

            (4) the Trustee shall commence a voluntary case under the Federal
      bankruptcy laws, as now or hereafter constituted, or any other applicable
      Federal or State bankruptcy, insolvency or similar law or shall consent to
      the appointment of or taking possession by a receiver, custodian,
      liquidator, assignee, trustee, sequestrator or other similar official of
      the Trustee or its property or affairs, or shall make an assignment for
      the benefit of creditors, or shall admit in writing its inability to pay
      its debts generally as they become due, or shall take corporate action in
      furtherance of any such action,

then, in any such case, (i) the Company by a Board Resolution may remove the
Trustee with respect to such series or (ii) subject to Section 5.14, any Holder
who has been a bona fide Holder of a Debt Security of any series for at least
six months may, on behalf of himself and all others similarly situated, petition
any court of competent jurisdiction for the removal of the Trustee for the Debt
Securities of such series and the appointment of a successor Trustee.

            (e) If the Trustee shall resign, be removed or become incapable of
acting with respect to any series of Debt Securities, or if a vacancy shall
occur in the office of Trustee for any cause, with respect to the Debt
Securities or one or more series, the Company, by a Board Resolution, shall
promptly appoint a successor Trustee or Trustees with respect to the Debt
Securities of that or those series (it being understood that any such successor
Trustee may be appointed with respect to the Debt Securities of one or more or
all of such series and that at any time there shall be only one Trustee with
respect to the Debt Securities of any particular series) and shall comply with
the applicable requirements of Section 6.11. If, within one year after such
resignation, removal or incapability, or the occurrence of such vacancy, a
successor Trustee with respect to the Debt Securities of any series shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Debt Securities of such series delivered to the Company and the
retiring Trustee, the successor Trustee so appointed shall, forthwith upon its
acceptance of such appointment, become the successor Trustee with respect to the
Debt Securities of such


                                      -51-
<PAGE>   62
series and to that extent supersede the successor Trustee appointed by the
Company. If no successor Trustee with respect to the Debt Securities of any
series shall have been so appointed by the Company or the Holders and accepted
appointment in the manner hereinafter provided, any Holder who has been a bona
fide Holder of a Debt Security of such series for at least six months may,
subject to Section 5.14, on behalf of himself and all others similarly situated,
petition any court of competent jurisdiction for the appointment of a successor
Trustee with respect to the Debt Securities of such series.

            (f) The Company shall give notice of each resignation and each
removal of the Trustee with respect to the Debt Securities of any series and
each appointment of a successor Trustee with respect to the Debt Securities of
any series by mailing written notice of such event by first-class mail, postage
prepaid, to the Holders of Registered Securities, if any, of such series as
their names and addresses appear in the Security Register and, if Debt
Securities of such series are issuable as Bearer Securities, by publishing
notice of such event once in an Authorized Newspaper in each Place of Payment
located outside the United States. Each notice shall include the name of the
successor Trustee with respect to the Debt Securities of such series and the
address of its Corporate Trust Office.

            SECTION 6.11. Acceptance of Appointment by Successor.

            (a) In the case of an appointment hereunder of a successor Trustee
with respect to all Debt Securities, every such successor Trustee so appointed
shall execute, acknowledge and deliver to the Company and to the retiring
Trustee an instrument accepting such appointment, and thereupon the resignation
or removal of the retiring Trustee shall become effective and such successor
Trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, trusts and duties of the retiring Trustee; but, on
request of the Company or the successor Trustee, such retiring Trustee shall,
upon payment of its charges, execute and deliver an instrument transferring to
such successor Trustee all the rights, powers and trusts of the retiring
Trustee, and shall duly assign, transfer and deliver to such successor Trustee
all property and money held by such retiring Trustee hereunder.

            (b) In the case of the appointment hereunder of a successor Trustee
with respect to the Debt Securities of one or more (but not all) series, the
Company, the retiring Trustee upon payment of its charges and each successor
Trustee with respect to the Debt Securities of one or more series shall execute
and deliver an indenture supplemental hereto wherein each successor Trustee
shall accept such appointment and which (1) shall contain such provisions as
shall be necessary or desirable to transfer and confirm to, and to vest in, each
successor Trustee all the rights, powers, trusts and duties of the retiring
Trustee with respect to the Debt Securities of that or those series to which the
appointment of such successor Trustee relates, (2) if the retiring Trustee is
not retiring with respect to all Debt Securities, shall contain such provisions
as shall be deemed necessary or desirable to confirm that all the rights,
powers, trusts and duties of the retiring Trustee with respect to the Debt
Securities of that or those series as to which the retiring Trustee is not
retiring shall continue to be vested in the retiring Trustee, and (3) shall add
to or change any of the provisions of this Indenture as shall be necessary to
provide for or facilitate the administration of the trusts hereunder by more
than one Trustee, it being understood that nothing


                                      -52-
<PAGE>   63
herein or in such supplemental indenture shall constitute such Trustees
co-trustees of the same trust and that each such Trustee shall be trustee of a
trust or trusts hereunder separate and apart from any trust or trusts hereunder
administered by any other such Trustee; and upon the execution and delivery of
such supplemental indenture, the resignation or removal of the retiring Trustee
shall become effective to the extent provided therein and each such successor
Trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, trusts and duties of the retiring Trustee with respect
to the Debt Securities of that or those series to which the appointment of such
successor Trustee relates; but, on the request of the Company or any successor
Trustee, such retiring Trustee shall duly assign, transfer and deliver to such
successor Trustee all property and money held by such retiring Trustee hereunder
with respect to the Debt Securities of that or those series to which the
appointment of such successor Trustee relates.

            (c) Upon request of any such successor Trustee, the Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Trustee all such rights, powers and trusts referred
to in paragraph (a) or (b) of this Section, as the case may be.

            (d) No successor Trustee shall accept its appointment unless at the
time of such acceptance such successor Trustee shall be qualified and eligible
under this Article.

            SECTION 6.12. Merger, Conversion, Consolidation or Succession to
Business.

            Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the executing or filing of any paper or any further act on the
part of any of the parties hereto. In case any Debt Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may adopt
such authentication and deliver the Debt Securities so authenticated with the
same effect as if such successor Trustee had itself authenticated such Debt
Securities. In case any Debt Securities shall not have been authenticated by
such predecessor Trustee, any such successor Trustee may authenticate and
deliver such Debt Securities, in either its own name or that of its predecessor
Trustee, with the full force and effect which this Indenture provides for the
certificate of authentication of the Trustee.

            SECTION 6.13. Preferential Collection of Claims Against Company.

            If and when the Trustee shall be or shall become a creditor,
directly or indirectly, secured or unsecured, of the Company (or any other
obligor upon the Debt Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding collection of claims against the
Company (or any such other obligor).


                                      -53-
<PAGE>   64
            SECTION 6.14. Authenticating Agent.

            The Trustee shall upon Company request appoint one or more
authenticating agents (including, without limitation, the Company or any
Affiliate thereof) with respect to one or more series of Debt Securities which
shall be authorized on behalf of the Trustee in authenticating Debt Securities
of such series in connection with the issue, delivery, registration of transfer,
exchange, partial redemption or repayment of such Debt Securities. Wherever
reference is made in this Indenture to the authentication of Debt Securities by
the Trustee or the Trustee's certificate of authentication, such reference shall
be deemed to include authentication on behalf of the Trustee by an
authenticating agent and a certificate of authentication executed on behalf of
the Trustee by an authenticating agent. Each authenticating agent must be
acceptable to the Company and must be a corporation organized and doing business
under the laws of the United States or of any State, having a combined capital
and surplus of at least $50,000,000, authorized under such laws to do a trust
business and subject to supervision or examination by Federal or State
authorities or the equivalent foreign authority in the case of an authenticating
agent who is not organized and doing business under the laws of the United
States or of any State thereof or the District of Columbia.

            Any corporation succeeding to the corporate agency business of an
authenticating agent shall continue to be an authenticating agent without the
execution or filing of any paper or any further act on the
part of the Trustee or such authenticating agent.

            An authenticating agent may at any time resign with respect to one
or more series of Debt Securities by giving written notice of resignation to the
Trustee and to the Company. The Trustee may at any time terminate the agency of
any authenticating agent with respect to one or more series of Debt Securities
by giving written notice of termination to such authenticating agent and to the
Company. Upon receiving such a notice of resignation or upon such a termination,
or in case at any time an authenticating agent shall cease to be eligible in
accordance with the provisions of this Section, the Trustee promptly may appoint
a successor authenticating agent. Any successor authenticating agent upon
acceptance of its appointment hereunder shall become vested with all rights,
powers and duties of its predecessor hereunder, with like effect as if
originally named as an authenticating agent herein. No successor authenticating
agent shall be appointed unless eligible under the provisions of this Section.

            The Trustee agrees to pay to each authenticating agent from time to
time reasonable compensation for its services under this Section, and the
Trustee shall be entitled to be reimbursed for such payment, subject to the
provisions of Section 6.7.

            The provisions of Sections 1.4, 1.11, 3.6, 3.9, 6.3, 6.4 and 6.5
shall be applicable to any authenticating agent.

            Pursuant to each appointment made under this Section, the Debt
Securities of each series covered by such appointment may have endorsed thereon,
in lieu of the Trustee's certificate of authentication, an alternate certificate
of authentication in substantially the following form:


                                      -54-
<PAGE>   65
            This is one of the Debt Securities, of the series designated herein,
described in the within-mentioned Indenture.

     [_______________________________________________]

     By   ____________________________________________
          As Authenticating Agent for the Trustee


     By   ____________________________________________
          Authorized Officer


                                ARTICLE SEVEN

              HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

            SECTION 7.1. Company to Furnish Trustee Names and Addresses of
Holders.

            The Company will furnish or cause to be furnished to the Trustee
with respect to Debt Securities of each series for which it acts as Trustee:

            (1) semi-annually, not more than 15 days after the Regular Record
      Date in respect of the Debt Securities of such series or on May 15 and
      November 15 of each year with respect to each series of Debt Securities
      for which there are no Regular Record Dates, a list, in such form as the
      Trustee may reasonably require, of the names and addresses of the Holders
      of Registered Securities as of such Regular Record Date or May 1 or
      November 1, as the case may be, and

            (2) at such other times as the Trustee may request in writing,
      within 30 days after the receipt by the Company of any such request, a
      list of similar form and content as of a date not more than 15 days prior
      to the time such list is furnished;

provided, however, that if and so long as the Trustee shall be the Security
Registrar, no such list need be furnished.

            SECTION 7.2. Preservation of Information; Communications to Holders.

            (a) The Trustee shall preserve, in as current a form as is
reasonably practicable, the names and addresses of Holders of Registered
Securities contained in the most recent list furnished to the Trustee as
provided in Section 7.1 and the names and addresses of Holders of Registered
Securities received by the Trustee in its capacity as Paying Agent or Security
Registrar, if so acting. The Trustee may destroy any list furnished to it as
provided in Section 7.1 upon receipt of a new list so furnished. The Trustee
shall preserve for at least two years the names and addresses of Holders of
Bearer Securities filed with the Trustee by such Holders.


                                      -55-
<PAGE>   66
            (b) The rights of Holders to communicate with other Holders with
respect to their rights under this Indenture or under the Debt Securities, and
the corresponding rights and privileges of the Trustee, shall be as provided by
the Trust Indenture Act.

            (c) Every Holder of Debt Securities or coupons, by receiving and
holding the same, agrees with the Company and the Trustee that neither the
Company nor the Trustee shall be held accountable by reason of any disclosure of
information as to the names and addresses of the Holders made pursuant to the
Trust Indenture Act.

            SECTION 7.3. Reports by Trustee.

            (a) Within 60 days after May 15 of each year commencing with the
first May 15 after the first issuance of Debt Securities pursuant to this
Indenture and at any other time required by the Trust Indenture Act, the Trustee
shall transmit to Holders such reports concerning the Trustee and its actions
under this Indenture and such other matters as may be required pursuant to the
Trust Indenture Act in the manner required by the Trust Indenture Act.

            (b) A copy of each such report shall, at the time of such
transmission to Holders, be filed by the Trustee with each stock exchange upon
which any Debt Securities of such series are listed, with the Commission and
also with the Company. The Company will notify the Trustee when any series of
Debt Securities are listed on any stock exchange.

            SECTION 7.4. Reports by Company.

            The Company shall file with the Trustee and the Commission, and
transmit to Holders, such information, documents and other reports, and such
summaries thereof, as may be required pursuant to the Trust Indenture Act at the
time and in the manner pursuant to such Act; provided that such information,
documents or reports required to be filed with the Commission pursuant to
Section 13 or Section 15(d) of the Securities Exchange Act of 1934 shall be
filed with the Trustee within 15 days after the same is so required to be filed
with the Commission.

                                ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

            SECTION 8.1. Company May Consolidate, etc. Only on Certain Terms.

            The Company shall not consolidate with or merge into any other
corporation or convey, transfer or lease its properties and assets substantially
as an entirety to any Person, and the Company shall not permit any Person to
consolidate with or merge into the Company or convey, transfer or lease its
properties and assets substantially as an entirety to the Company, unless:

            (1) the corporation formed by such consolidation or into which the
      Company is merged or the Person which acquires by conveyance or transfer,
      or which leases, the properties and assets of the Company substantially as
      an entirety shall be a corporation


                                      -56-
<PAGE>   67
      organized and existing under the laws of the United States of America, any
      political subdivision thereof or any State or the District of Columbia
      thereof and shall expressly assume, by an indenture supplemental hereto,
      executed and delivered to the Trustee, in form satisfactory to the
      Trustee, the due and punctual payment of the principal of (and premium, if
      any) and interest (including all additional amounts, if any, payable
      pursuant to Section 10.6) on all the Debt Securities and any related
      coupons and the performance of every covenant of this Indenture on the
      part of the Company to be performed or observed;

            (2) immediately after giving effect to such transaction, no Event of
      Default, and no event which, after notice or lapse of time, or both, would
      become an Event of Default, shall have happened and be continuing;

            (3) the Company has delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel each stating that such
      consolidation, merger, conveyance, transfer or lease and such supplemental
      indenture comply with this Article and that all conditions precedent
      herein provided for relating to such transaction have been met.

            SECTION 8.2. Successor Corporation Substituted.

            Upon any consolidation with or merger into any other corporation, or
any conveyance, transfer or lease of the properties and assets of the Company
substantially as an entirety in accordance with Section 8.1, the successor
corporation formed by such consolidation or into which the Company is merged or
to which such conveyance, transfer or lease is made shall succeed to, and be
substituted for, and may exercise every right and power of, the Company under
this Indenture with the same effect as if such successor had been named as the
Company herein, and thereafter, except in the case of a lease, the Company
(which term for this purpose shall mean the Person named as the "Company" in the
first paragraph of this instrument or any successor corporation which shall
theretofore have become such in the manner presented in this Article) shall be
relieved of all obligations and covenants under this Indenture and the Debt
Securities and coupons.


                                 ARTICLE NINE

                           SUPPLEMENTAL INDENTURES

            SECTION 9.1. Supplemental Indentures without Consent of Holders.

            Without the consent of any Holders, the Company, when authorized by
a Board Resolution, and the Trustee, at any time and from time to time, may
enter into one or more indentures supplemental hereto, in form satisfactory to
the Trustee, for any of the following purposes:


                                      -57-
<PAGE>   68
            (1) to evidence the succession of another corporation to the
      Company, and the assumption by such successor of the covenants of the
      Company herein and in the Debt Securities contained; or

            (2) to add to the covenants of the Company, for the benefit of the
      Holders of all or any series of Debt Securities or coupons (and if such
      covenants are to be for the benefit of less than all series of Debt
      Securities or coupons, stating that such covenants are expressly being
      included solely for the benefit of such series), to convey, transfer,
      assign, mortgage or pledge any property to or with the Trustee, or to
      surrender any right or power herein conferred upon the Company; or

            (3) to add to any additional Events of Default (and if such Events
      of Default are to be applicable to less than all series of Debt
      Securities, stating that such Events of Default are expressly being
      included solely to be applicable to such series); or

            (4) to add to, change or eliminate any of the provisions of this
      Indenture to provide that Bearer Securities may be registrable as to
      principal, to change or eliminate any restrictions on the payment of
      principal (or premium, if any) on Registered Securities or of principal
      (or premium, if any) or any interest on Bearer Securities, to permit
      Bearer Securities to be issued in exchange for Registered Securities of
      other authorized denominations or to permit or facilitate the issuance of
      Debt Securities in uncertificated form, provided any such action shall not
      adversely affect the interests of the Holders of Debt Securities of any
      series or any related coupons in any material respect; or

            (5) to add to, change or eliminate any of the provisions of this
      Indenture, provided that any such addition, change or elimination (a)
      shall become effective only when there is no Debt Security Outstanding of
      any series created prior to the execution of such supplemental indenture
      which is entitled to the benefit of such provisions or (b) shall not apply
      to any Debt Security Outstanding; or

            (6) to establish the form or terms of Debt Securities of any series
      as permitted by Sections 2.1 and 3.1; or

            (7)   to secure the Debt Securities; or

            (8) to evidence and provide for the acceptance of appointment
      hereunder by a successor Trustee with respect to the Debt Securities of
      one or more series and to add to or change any of the provisions of this
      Indenture as shall be necessary to provide for or facilitate the
      administration of the trusts hereunder by more than one Trustee, pursuant
      to the requirements of Section 6.11(b); or

            (9) to cure any ambiguity, to correct or supplement any provision
      herein which may be defective or inconsistent with any other provision
      herein, or to make any other provisions with respect to matters or
      questions arising under this Indenture which shall not be inconsistent
      with any provision of this Indenture, provided such other provisions


                                      -58-
<PAGE>   69
      shall not adversely affect the interests of the Holders of Debt Securities
      of any series or any related coupons in any material respect; or

            (10) to add to or change or eliminate any provision of this
      Indenture as shall be necessary or desirable in accordance with any
      amendments to the Trust Indenture Act, provided such action shall not
      adversely affect the interest of Holders of Debt Securities of any series
      or any appurtenant coupons in any material respect.

            SECTION 9.2. Supplemental Indentures with Consent of Holders.

            With the consent of the Holders of not less than a majority in
principal amount of the Outstanding Debt Securities of each series affected by
such supplemental indenture, by Act of said Holders delivered to the Company and
the Trustee, the Company, when authorized by a Board Resolution, and the Trustee
may enter into an indenture or indentures supplemental hereto for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of modifying in any manner the rights of the
Holders under this Indenture of such Debt Securities of such series and any
related coupons; provided, however, that no such supplemental indenture shall,
without the consent of the Holder of each Outstanding Debt Security or coupon
affected thereby,

            (1) change the Stated Maturity of the principal or any installment
      of principal of, or any installment of interest on, any Debt Security, or
      reduce the principal amount thereof or the interest thereon or any premium
      payable upon redemption or repayment thereof, or change any obligation of
      the Company to pay additional amounts pursuant to Section 10.6 (except as
      contemplated by Section 8.1(1) and permitted by Section 9.1(1)), or reduce
      the amount of the principal of an Original Issue Discount Security that
      would be due and payable upon a declaration of acceleration of the
      Maturity thereof pursuant to Section 5.2, or change any Place of Payment,
      or the coin or currency in which any Debt Security or the interest thereon
      or any coupon is payable, or impair any right to the delivery of Capital
      Securities in exchange for Debt Securities provided for in this Indenture
      or the right to institute suit for the enforcement of any such payment on
      or after the Stated Maturity thereof (or, in the case of redemption or
      repayment, on or after the Redemption Date or Repayment Date or Capital
      Exchange Date, as the case may be), or modify the provisions of this
      Indenture with respect to the subordination of the Debt Securities of any
      series in a manner adverse to the Holder, or

            (2) reduce the percentage in principal amount of the Outstanding
      Debt Securities of any series, the consent of whose Holders is required
      for any such supplemental indenture, or the consent of whose Holders is
      required for any waiver (of compliance with certain provisions of this
      Indenture or certain defaults hereunder and their consequences) provided
      for in this Indenture, or reduce the requirements of Section 16.4 for
      quorum or voting, or

            (3) modify any of the provisions of this Section, Section 5.13 or
      Section 10.5, except to increase any such percentage or to provide that
      certain other provisions of this Indenture cannot be modified or waived
      without the consent of the Holder of each Out-


                                      -59-
<PAGE>   70
      standing Debt Security affected thereby; provided, however, that this
      clause shall not be deemed to require the consent of any Holder with
      respect to changes in the references to "the Trustee" and concomitant
      changes in this Section and Section 10.5, or the deletion of this proviso,
      in accordance with the requirements of Section 6.11(b) and 9.1(7); or

            (4) adversely affect the right to repayment, if any, of Debt
      Securities of any series at the option of the Holders thereof; or

            (5) impair the right of any Holder of Debt Securities of any series
      to receive Capital Securities on any Capital Exchange Date for Debt
      Securities of such series with a Market Value equal to the principal
      amount of such Holder's Debt Securities of such series or in an amount
      sufficient to provide proceeds upon sale by the Company in the Secondary
      Offering equal to the principal amount of such Holder's Debt Securities of
      such series; or

            (6) impair the right of any Holder of Convertible Securities of any
      series to convert such Debt Securities pursuant to Article Nineteen.

            A supplemental indenture which changes or eliminates any covenant or
other provision of this Indenture which has expressly been included solely for
the benefit of one or more particular series of Debt Securities, or which
modifies the rights of the Holders of Debt Securities of such series with
respect to such covenant or other provision, shall be deemed not to affect the
rights under this Indenture of the Holders of Debt Securities of any other
series.

            It shall not be necessary for any Act of Holders of the Debt
Securities under this Section to approve the particular form of any proposed
supplemental indenture, but it shall be sufficient if such Act shall approve the
substance thereof.

            SECTION 9.3. Execution of Supplemental Indentures.

            In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 6.1) shall be fully protected in relying upon, an
Opinion of Counsel stating that the execution of such supplemental indenture is
authorized or permitted by this Indenture. The Trustee may, but shall not be
obligated to, enter into any such supplemental indenture which affects the
Trustee's own rights, duties or immunities under this Indenture or otherwise.

            SECTION 9.4. Effect of Supplemental Indentures.

            Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder
of Debt Securities theretofore or thereafter authenticated and delivered
hereunder and of any coupons appertaining thereto shall be bound thereby.


                                      -60-
<PAGE>   71
            SECTION 9.5. Conformity with Trust Indenture Act.

            Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of the Trust Indenture Act as then in effect.

            SECTION 9.6. Reference in Debt Securities to Supplemental
Indentures.

            Debt Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall,
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture. If the Company shall
so determine, new Debt Securities of any series and any appurtenant coupons so
modified as to conform, in the opinion of the Trustee and the Board of
Directors, to any such supplemental indenture may be prepared and executed by
the Company and authenticated and delivered by the Trustee in exchange for
Outstanding Debt Securities of such series and any appurtenant coupons.

                                 ARTICLE TEN

                                  COVENANTS

            SECTION 10.1. Payment of Principal, Premium and Interest.

            The Company covenants and agrees for the benefit of each series of
Debt Securities and any appurtenant coupons that it will duly and punctually pay
the principal of (and premium, if any) and interest on the Debt Securities and
any appurtenant coupons in accordance with the terms of the Debt Securities, any
appurtenant coupons and this Indenture. Any interest due on Bearer Securities on
or before Maturity, other than additional amounts, if any, payable as provided
in Section 10.6 in respect of principal of (or premium, if any, on) such a Debt
Security, shall be payable only upon presentation and surrender of the several
coupons for such interest installments as are evidenced thereby as they
severally mature. For all purposes of this Indenture, the exchange of Capital
Securities for Debt Securities of any series pursuant to the Indenture shall
constitute full payment of principal of the Debt Securities of such series being
exchanged on any Capital Exchange Date for Debt Securities of such series,
without prejudice to any Holder's rights pursuant to Section 14.13.

            SECTION 10.2. Maintenance of Office or Agency.

            The Company will maintain in each Place of Payment for any series of
Debt Securities an office or agency where Debt Securities (but, except as
otherwise provided below, unless such Place of Payment is located outside the
United States, not Bearer Securities) may be presented or surrendered for
payment, where Debt Securities may be surrendered for registration of transfer
or exchange and where notices and demands to or upon the Company in respect of
the Debt Securities and this Indenture may be served. If Debt Securities of a
series are issuable as Bearer Securities, the Company will maintain, subject to
any laws or regulations applicable thereto, an office or agency in a Place of
Payment for such series which is located outside the


                                      -61-
<PAGE>   72
United States where Debt Securities of such series and the related coupons may
be presented and surrendered for payment (including payment of any additional
amounts payable on Debt Securities of such series pursuant to Section 10.6);
provided, however, that if the Debt Securities of such series are listed on The
Stock Exchange of the United Kingdom and the Republic of Ireland or the
Luxembourg Stock Exchange or any other stock exchange located outside the United
States and such stock exchange shall so require, the Company will maintain a
Paying Agent in London or Luxembourg or any other required city located outside
the United States, as the case may be, so long as the Debt Securities of such
series are listed on such exchange. The Company will give prompt written notice
to the Trustee of this location, and any change in the location, of any such
office or agency. If at any time the Company shall fail to maintain any such
required office or agency or shall fail to furnish the Trustee with the address
thereof, such presentations, surrenders, notices or demands may be made or
served at the Corporate Trust Office of the Trustee, and the Company hereby
appoints the Trustee its agent to receive all presentations, surrenders, notices
and demands, except that Bearer Securities of that series and the related
coupons may be presented and surrendered for payment (including payment of any
additional amounts payable on Bearer Securities of that series pursuant to
Section 10.6) at the place specified for the purpose pursuant to Section 3.1(5).

            No payment of principal of, premium or interest on Bearer Securities
shall be made at any office or agency of the Company in the United States or by
check mailed to any address in the United States or by transfer to an account
maintained with a bank located in the United States; provided, however, payment
of principal of and any premium and interest denominated in Dollars (including
additional amounts payable in respect thereof) on any Bearer Security may be
made at an office or agency of, and designated by, the Company located in the
United States if (but only if) payment of the full amount of such principal,
premium, interest or additional amounts in Dollars at all offices outside the
United States maintained for the purpose by the Company in accordance with this
Indenture is illegal or effectively precluded by exchange controls or other
similar restrictions and the Trustee receives an Opinion of Counsel that such
payment within the United States is legal. Unless otherwise provided as
contemplated by Section 3.1 with respect to any series of Debt Securities, at
the option of the Holder of any Bearer Security or related coupon, payment may
be made by check in the currency designated for such payment pursuant to the
terms of such Bearer Security presented or mailed to an address outside the
United States or by transfer to an account in such currency maintained by the
payee with a bank located outside the United States.

            The Company may also from time to time designate one or more other
offices or agencies (in or outside of such Place of Payment) where the Debt
Securities of one or more series and any appurtenant coupons (subject to the
preceding paragraph) may be presented or surrendered for any or all such
purposes, and may from time to time rescind such designations; provided,
however, that no such designation or rescission shall in any manner relieve the
Company of its obligation to maintain an office or agency in each Place of
Payment for any series of Debt Securities for such purposes. The Company will
give prompt written notice to the Trustee of any such designation and any change
in the location of any such other office or agency.


                                      -62-
<PAGE>   73
            SECTION 10.3. Money for Debt Securities Payments to Be Held in
Trust.

            If the Company shall at any time act as its own Paying Agent with
respect to any series of Debt Securities, it will, on or before each due date of
the principal of (and premium, if any) or interest on any of the Debt Securities
of such series and any appurtenant coupons, segregate and hold in trust for the
benefit of the Persons entitled thereto a sum sufficient to pay the principal
(and premium, if any) or interest so becoming due until such sums shall be paid
to such Persons or otherwise disposed of as herein provided, and will promptly
notify the Trustee of its action or failure so to act.

            Whenever the Company shall have one or more Paying Agents with
respect to any series of Debt Securities, it will, on or before each due date of
the principal of (and premium, if any) or interest on any of the Debt Securities
of such series and any appurtenant coupons, deposit with a Paying Agent a sum
sufficient to pay the principal (and premium, if any) or interest so becoming
due, such sum to be held in trust for the benefit of the Persons entitled to
such principal, premium or interest, and (unless such Paying Agent is the
Trustee) the Company will promptly notify the Trustee of its action or failure
so to act.

            The Company will cause each Paying Agent with respect to any series
of Debt Securities other than the Trustee to execute and deliver to the Trustee
an instrument in which such Paying Agent shall agree with the Trustee, subject
to the provisions of this Section, that such Paying Agent will

            (1) hold all sums held by it for the payment of the principal of
      (and premium, if any) or interest on Debt Securities of such series and
      any appurtenant coupons in trust for the benefit of the Persons entitled
      thereto until such sums shall be paid to such Persons or otherwise
      disposed of as herein provided;

            (2) give the Trustee notice of any default by the Company (or any
      other obligor upon the Debt Securities of such series or any appurtenant
      coupons) in the making of any payment of principal of (and premium, if
      any) or interest on the Debt Securities of such series or any appurtenant
      coupons; and

            (3) at any time during the continuance of any such default, upon the
      written request of the Trustee, forthwith pay to the Trustee all sums so
      held in trust by such Paying Agent.

            The Company may at any time, for the purpose of terminating its
obligations under this Indenture with respect to Debt Securities of any series
or for any other purpose, pay, or by Company Order direct any Paying Agent to
pay, to the Trustee all sums held in trust by the Company or such Paying Agent,
such sums to be held by the Trustee upon the same trusts as those upon which
such sums were held by the Company or such Paying Agent; and, upon such payment
by any Paying Agent to the Trustee, such Paying Agent shall be released from all
further liability with respect to such money.


                                      -63-
<PAGE>   74
            Any principal and interest received on the Eligible Instruments
deposited with the Trustee or any money deposited with the Trustee or any Paying
Agent, or then held by the Company, in trust for the payment of the principal of
(and premium, if any) or interest on any Debt Security of any series or any
appurtenant coupons or any money on deposit with the Trustee or any Paying Agent
representing amounts deducted from the Redemption Price or Repayment Price with
respect to unmatured coupons not presented upon redemption or exercise of the
Holder's option for repayment pursuant to Section 11.6 or 13.3 and remaining
unclaimed for two years after such principal (and premium, if any) or interest
has become due and payable shall be paid to the Company on Company Request, or
(if then held by the Company) shall be discharged from such trust; and the
Holder of such Debt Security or any coupon appertaining thereto shall
thereafter, as an unsecured general creditor, look only to the Company for
payment thereof, and all liability of the Trustee or such Paying Agent with
respect to such trust money (including the principal and interest received on
Eligible Instruments deposited with the Trustee), and all liability of the
Company as trustee thereof, shall thereupon cease; provided, however, that the
Trustee or such Paying Agent, before being required to make any such repayment,
may at the expense of the Company cause to be published once, in an Authorized
Newspaper of general circulation in the Borough of Manhattan, The City of New
York, and each Place of Payment or mailed to each such Holder, or both, notice
that such money remains unclaimed and that, after a date specified therein,
which shall not be less than 30 days from the date of such publication or
mailing, any unclaimed balance of such money then remaining will be repaid to
the Company.

            SECTION 10.4. Officers' Certificate as to Default.

            The Company will deliver to the Trustee, on or before a date not
more than four months after the end of each fiscal year of the Company ending
after the date hereof, an Officers' Certificate stating whether or not to the
best knowledge of the signers thereof the Company is in default in the
performance and observance of any of the terms, provisions and conditions of
this Indenture, and, if the Company shall be in default, specifying all such
defaults and the nature thereof of which they may have knowledge.

            The Company shall file with the Trustee written notice of the
occurrence of any default or Event of Default.

            SECTION 10.5. Existence.

            Subject to Article Eight, the Company will do or cause to be done
all things necessary to preserve and keep in full force and effect its
existence, rights (charter and statutory) and franchises; provided, however,
that the Company shall not be required to preserve any such right or franchise
if the Board of Directors shall determine that the preservation thereof is no
longer desirable in the conduct of the business of the Company and that the loss
thereof is not and is not reasonably likely to be disadvantageous in any
material respect to the Holders.

            SECTION 10.6. Waiver of Certain Covenants.

            The Company may omit in any particular instance to comply with any
covenant or condition applicable to the Debt Securities of any series that is
determined pursuant to Section


                                      -64-
<PAGE>   75
3.1 to be subject to this provision if, before the time for such compliance the
Holders of at least a majority in principal amount of the Debt Securities at the
time Outstanding shall, by Act of such Holders, either waive such compliance in
such instance or generally waive compliance with such covenant or condition, but
no such waiver shall extend to or affect such covenant or condition except to
the extent so expressly waived, and, until such waiver shall become effective,
the obligations of the Company and the duties of the Trustee in respect of any
such covenant or condition shall remain in full force and effect.

            SECTION 10.7. Payment of Additional Amounts.

            If the Debt Securities of a series provide for the payment of
additional amounts, the Company will pay to the Holder of any Debt Security of
any series or any coupon appertaining thereto additional amounts upon the terms
and subject to the conditions provided therein. Whenever in this Indenture there
is mentioned, in any context, the payment of the principal of (or premium, if
any) or interest on, or in respect of, any Debt Security of any series or any
related coupon or the net proceeds received on the sale or exchange of any Debt
Security of any series, such mention shall be deemed to include mention of the
payment of additional amounts provided for in the terms of such Debt Securities
and this Section to the extent that, in such context, additional amounts are,
were or would be payable in respect thereof pursuant to the provisions of this
Section and express mention of the payment of additional amounts (if applicable)
in any provisions hereof shall not be construed as excluding additional amounts
in those provisions hereof where such express mention is not made.

            If the Debt Securities of a series provide for the payment of
additional amounts, at least 10 days prior to the first Interest Payment Date
with respect to that series of Debt Securities (or if the Debt Securities of
that series will not bear interest prior to Maturity, the first day on which a
payment of principal (and premium, if any) is made), and at least 10 days prior
to each date of payment of principal (and premium, if any) or interest if there
has been any change with respect to the matters set forth in the below-mentioned
Officers' Certificate, the Company will furnish the Trustee and the Company's
principal Paying Agent or Paying Agents, if other than the Trustee, with an
Officers' Certificate instructing the Trustee and such Paying Agent or Paying
Agents whether such payment of principal of (and premium, if any) or interest on
the Debt Securities of that series shall be made to Holders of Debt Securities
of that series or the related coupons who are United States Aliens without
withholding for or on account of any tax, assessment or other governmental
charge described in the Debt Securities of that series. If any such withholding
shall be required, then such Officers' Certificate shall specify by country the
amount, if any, required to be withheld on such payments to such Holders of Debt
Securities or coupons and the Company will pay to the Trustee or such Paying
Agent the additional amounts, if any, required by the terms of such Debt
Securities and the first paragraph of this Section. The Company covenants to
indemnify the Trustee and any Paying Agent for, and to hold them harmless
against, any loss, liability or expense reasonably incurred without negligence
or bad faith on their part arising out of or in connection with actions taken or
omitted by any of them in reliance on any Officers' Certificate furnished
pursuant to this Section.


                                      -65-
<PAGE>   76
                                ARTICLE ELEVEN

                        REDEMPTION OF DEBT SECURITIES

            SECTION 11.1. Applicability of Article.

            Debt Securities of any series which are redeemable before their
Stated Maturity shall be redeemable in accordance with their terms and (except
as otherwise specified as contemplated by Section 3.1 for Debt Securities of any
series) in accordance with this Article.

            SECTION 11.2. Election to Redeem; Notice to Trustee.

            The election of the Company to redeem any Debt Securities shall be
evidenced by a Board Resolution. In case of any redemption at the election of
the Company of less than all of the Debt Securities of any series, the Company
shall, at least 45 days prior to the Redemption Date fixed by the Company
(unless a shorter notice shall be satisfactory to the Trustee), notify the
Trustee of such Redemption Date and of the principal amount and the tenor and
terms of the Debt Securities of any series to be redeemed. In the case of any
redemption of Debt Securities prior to the expiration of any restriction on such
redemption provided in the terms of such Debt Securities or elsewhere in this
Indenture, the Company shall furnish the Trustee with an Officers' Certificate
evidencing compliance with such restriction.

            SECTION 11.3. Selection by Trustee of Debt Securities to be
Redeemed.

            Except as otherwise specified as contemplated by Section 3.1 for
Debt Securities of any series, if less than all the Debt Securities of any
series with like tenor and terms are to be redeemed, the particular Debt
Securities to be redeemed shall be selected not more than 60 days prior to the
Redemption Date by the Trustee, from the Outstanding Debt Securities of such
series with like tenor and terms not previously called for redemption, by such
method as the Trustee shall deem fair and appropriate and which may provide for
the selection for redemption of portions (equal to the minimum authorized
denomination for Debt Securities of such series or any integral multiple thereof
which is also an authorized denomination) of the principal amount of Registered
Securities or Bearer Securities (if issued in more than one authorized
denomination) of such series of a denomination larger than the minimum
authorized denomination for Debt Securities of such series.

            The Trustee shall promptly notify the Company in writing of the Debt
Securities selected for redemption and, in the case of any Debt Securities
selected for partial redemption, the principal amount thereof to be redeemed.

            For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the redemption of Debt Securities shall
relate, in the case of any Debt Security redeemed or to be redeemed only in
part, to the portion of the principal amount of such Debt Security which has
been or is to be redeemed.


                                      -66-
<PAGE>   77
            SECTION 11.4. Notice of Redemption.

            Notice of redemption shall be given in the manner provided in
Section 1.6 not less than 30 nor more than 60 days prior to the Redemption Date,
to each Holder of Debt Securities to be redeemed.

            All notices of redemption shall state:

            (1) the Redemption Date,

            (2) the Redemption Price,

            (3) if less than all Outstanding Debt Securities of any series are
      to be redeemed, the identification (and, in the case of partial
      redemption, the principal amounts) of the particular Debt Securities to be
      redeemed,

            (4) that on the Redemption Date the Redemption Price will become due
      and payable upon each such Debt Security to be redeemed, and that interest
      thereon shall cease to accrue on and after said date,

            (5) the Place or Places of Payment where such Debt Securities,
      together in the case of Bearer Securities with all coupons, if any,
      appertaining thereto maturing after the Redemption Date, are to be
      surrendered for payment of the Redemption Price,

            (6) that Bearer Securities may be surrendered for payment only at
      such place or places which are outside the United States, except as
      otherwise provided in Section 10.2,

            (7) that the redemption is for a sinking fund, if such is the case,
      and

            (8) the CUSIP number, if any.

            A notice of redemption published as contemplated by Section 1.6 need
not identify particular Registered Securities to be redeemed.

            Notice of redemption of Debt Securities to be redeemed at the
election of the Company shall be given by the Company, or, at the Company's
request, by the Trustee in the name and at the expense of the Company, and shall
be irrevocable.

            SECTION 11.5. Deposit of Redemption Price.

            On or prior to any Redemption Date, the Company shall deposit with
the Trustee or with a Paying Agent (or, if the Company is acting as its own
Paying Agent, aggregate and hold in trust as provided in Section 10.3) an amount
of money and/or, to the extent the Debt Securities to be redeemed are
denominated and payable in Dollars only, Eligible Instruments the payments of
principal and interest on which when due (and without reinvestment and providing
no tax liability will be imposed upon the Trustee or the Holders of the Debt
Securities to be redeemed) will provide money on or prior to the Redemption Date
in such amounts as will


                                      -67-
<PAGE>   78
(together with any money irrevocably deposited in trust with the Trustee,
without investment) be sufficient to pay the Redemption Price of, and (except if
the Redemption Date shall be an Interest Payment Date) accrued interest on, all
the Debt Securities or portions thereof which are to be redeemed on that date;
provided, however, that deposits with respect to Bearer Securities shall be made
with a Paying Agent or Paying Agents located outside the United States except as
otherwise provided in Section 10.2, unless otherwise specified as contemplated
by Section 3.1.

            SECTION 11.6. Debt Securities Payable on Redemption Date.

            Notice of redemption having been given as aforesaid, the Debt
Securities to be redeemed shall, on the Redemption Date, become due and payable
at the Redemption Price therein specified and from and after such date (unless
the Company shall default in the payment of the Redemption Price and accrued
interest) such Debt Securities shall cease to bear interest and the coupons for
such interest appertaining to any Bearer Securities so to be redeemed, except to
the extent provided below, shall be void. Upon surrender of any such Debt
Security for redemption in accordance with said notice, such Debt Security shall
be paid by the Company at the Redemption Price, together with accrued interest
to the Redemption Date; provided, however, that installments of interest on
Bearer Securities whose Stated Maturity is on or prior to the Redemption Date
shall be payable only upon presentation and surrender of coupons for such
interest (at an office or agency located outside the United States except as
otherwise provided in Section 10.2), and provided further, that installments of
interest on Registered Securities whose Stated Maturity is on or prior to the
Redemption Date shall be payable to the Holders of such Debt Securities, or one
or more Predecessor Securities, registered as such on the relevant Record Dates
according to their terms and the provisions of Section 3.7.

            If any Bearer Security surrendered for redemption shall not be
accompanied by all appurtenant coupons maturing after the Redemption Date, such
Bearer Security may be paid after deducting from the Redemption Price an amount
equal to the face amount of all such missing coupons, or the surrender of such
missing coupon or coupons may be waived by the Company and the Trustee if there
be furnished to them such security or indemnity as they may require to save each
of them and any Paying Agent harmless. If thereafter the Holder of such Bearer
Security shall surrender to the Trustee or any Paying Agent any such missing
coupon in respect of which a deduction shall have been made from the Redemption
Price, such Holder shall be entitled to receive the amount so deducted without
interest thereon; provided, however, that interest represented by coupons shall
be payable only upon presentation and surrender of those coupons at an office or
agency located outside of the United States except as otherwise provided in
Section 10.2.

            If any Debt Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Debt Security.

            SECTION 11.7. Debt Securities Redeemed in Part.

            Any Registered Security which is to be redeemed only in part shall
be surrendered at a Place of Payment therefor (with, if the Company, the
Security Registrar or the Trustee so


                                      -68-
<PAGE>   79
requires, due endorsement by, or a written instrument of transfer in form
satisfactory to the Company, the Security Registrar and the Trustee duly
executed by, the Holder thereof or his attorney duly authorized in writing), and
the Company shall execute, and the Trustee shall authenticate and deliver to the
Holder of such Debt Security without service charge, a new Registered Security
or Registered Securities of the same series and of like tenor and terms, of any
authorized denominations as requested by such Holder in aggregate principal
amount equal to and in exchange for the unredeemed portion of the principal of
the Debt Security so surrendered.


                                ARTICLE TWELVE

                                SINKING FUNDS

            SECTION 12.1. Applicability of Article.

            The provisions of this Article shall be applicable to any sinking
fund for the retirement of Debt Securities of a series except as otherwise
specified as contemplated by Section 3.1 for Debt Securities of such series.

            The minimum amount of any sinking fund payment provided for by the
terms of Debt Securities of any series is herein referred to as a "mandatory
sinking fund payment", and any payment in excess of such minimum amount provided
for by the term of Debt Securities of any series is herein referred to as an
"optional sinking fund payment". If provided for by the terms of Debt Securities
of any series, the amount of any sinking fund payment may be subject to
reduction as provided in Section 12.2. Each sinking fund payment shall be
applied to the redemption of Debt Securities of any series as provided for by
the terms of Debt Securities of such series.

            SECTION 12.2. Satisfaction of Sinking Fund Payments with Debt
Securities.

            The Company (1) may deliver Outstanding Debt Securities of a series
(other than any previously called for redemption), together in the case of any
Bearer Securities of such series with all unmatured coupons appertaining
thereto, and (2) may apply as a credit Debt Securities of a series which have
been redeemed either at the election of the Company pursuant to the terms of
such Debt Securities or through the application of permitted optional sinking
fund payments pursuant to the terms of such Debt Securities, in each case in
satisfaction of all or any part of any sinking fund payment with respect to the
Debt Securities of such series required to be made pursuant to the terms of such
Debt Securities as provided for by the terms of such series; provided that such
Debt Securities have not been previously so credited. Such Debt Securities shall
be received and credited for such purpose by the Trustee at the Redemption Price
specified in such Debt Securities for redemption through operation of the
sinking fund and the amount of such sinking fund payment shall be reduced
accordingly. If as a result of the delivery or credit of Debt Securities in lieu
of cash payments pursuant to this Section 12.2, the principal amount of Debt
Securities to be redeemed in order to exhaust the aforesaid cash payment shall
be less than $100,000, the Trustee need not call Debt Securities for redemption,
except upon Company


                                      -69-
<PAGE>   80
Request, and such cash payment shall be held by the Trustee or a Paying Agent
and applied to the next succeeding sinking fund payment, provided, however, that
the Trustee or such Paying Agent shall at the request of the Company from time
to time pay over and deliver to the Company any cash payment so being held by
the Trustee or such Paying Agent upon delivery by the Company to the Trustee of
Debt Securities purchased by the Company having an unpaid principal amount equal
to the cash payment requested to be released to the Company.

            SECTION 12.3. Redemption of Debt Securities for Sinking Fund.

            Not less than 60 days prior to each sinking fund payment date for
any series of Debt Securities (unless a shorter period shall be satisfactory to
the Trustee), the Company will deliver to the Trustee an Officers' Certificate
specifying the amount of the next ensuing sinking fund payment for that series
pursuant to the terms of that series, the portion thereof, if any, which is to
be satisfied by payment of cash, the portion thereof, if any, which is to be
satisfied by crediting Debt Securities of that series pursuant to Section 12.2
and the basis for any such credit and, prior to or concurrently with the
delivery of such Officers' Certificate, will also deliver to the Trustee any
Debt Securities to be so credited and not theretofore delivered to the Trustee.
Not less than 30 days (unless a shorter period shall be satisfactory to the
Trustee) before each such sinking fund payment date the Trustee shall select the
Debt Securities to be redeemed upon such sinking fund payment date in the manner
specified in Section 11.3 and cause notice of the redemption thereof to be given
in the name of and at the expense of the Company in the manner provided in
Section 11.4. Such notice having been duly given, the redemption of such Debt
Securities shall be made upon the terms and in the manner stated in Sections
11.5, 11.6 and 11.7.


                               ARTICLE THIRTEEN

                      REPAYMENT AT THE OPTION OF HOLDERS

            SECTION 13.1. Applicability of Article.

            Debt Securities of any series which are repayable at the option of
the Holders thereof before their Stated Maturity shall be repaid in accordance
with their terms and (except as otherwise specified pursuant to Section 3.1 for
Debt Securities of such series) in accordance with this Article.

            SECTION 13.2. Repayment of Debt Securities.

            Each Debt Security which is subject to repayment in whole or in part
at the option of the Holder thereof on a Repayment Date shall be repaid at the
applicable Repayment Price together with interest accrued to such Repayment Date
as specified pursuant to Section 3.1.

            SECTION 13.3. Exercise of Option; Notice.

            Each Holder desiring to exercise such Holder's option for repayment
shall, as conditions to such repayment, surrender the Debt Security to be repaid
in whole or in part


                                      -70-
<PAGE>   81
together with written notice of the exercise of such option at any office or
agency of the Company in a Place of Payment, not less than 30 nor more than 45
days prior to the Repayment Date; provided, however, that surrender of Bearer
Securities together with written notice of exercise of such option shall be made
at an office or agency located outside the United States except as otherwise
provided in Section 10.2. Such notice, which shall be irrevocable, shall specify
the principal amount of such Debt Security to be repaid, which shall be equal to
the minimum authorized denomination for such Debt Security or an integral
multiple thereof, and shall identify the Debt Security to be repaid and, in the
case of a partial repayment of the Debt Security, shall specify the denomination
or denominations of the Debt Security or Debt Securities of the same series to
be issued to the Holder for the portion of the principal of the Debt Security
surrendered which is not to be repaid.

            If any Bearer Security surrendered for repayment shall not be
accompanied by all unmatured coupons and all matured coupons in default, such
Bearer Security may be paid after deducting from the Repayment Price an amount
equal to the face amount of all such missing coupons, or the surrender of such
missing coupon or coupons may be waived by the Company and the Trustee if there
be furnished to them such security or indemnity as they may require to save each
of them and any Paying Agent harmless. If thereafter the Holder of such Bearer
Security shall surrender to the Trustee or any Paying Agent any such missing
coupon in respect of which a deduction shall have been made from the Repayment
Price, such Holder shall be entitled to receive the amount so deducted without
interest thereon; provided, however, that interest represented by coupons shall
be payable only at an office or agency located outside the United States except
as otherwise provided in Section 10.2.

            The Company shall execute and the Trustee shall authenticate and
deliver without service charge to the Holder of any Registered Security so
surrendered a new Registered Security or Securities of the same series, of any
authorized denomination specified in the foregoing notice, in an aggregate
principal amount equal to any portion of the principal of the Registered
Security so surrendered which is not to be repaid.

            The Company shall execute and the Trustee shall authenticate and
deliver without service charge to the Holder of any Bearer Security so
surrendered a new Registered Security or Securities or new Bearer Security or
Securities (and all appurtenant unmatured coupons and matured coupons in
default) or any combination thereof of the same series of any authorized
denomination or denominations specified in the foregoing notice, in an aggregate
principal amount equal to any portion of the principal of the Debt Security so
surrendered which is not to be paid; provided, however, that the issuance of a
Registered Security therefor shall be subject to applicable laws and
regulations, including provisions of the United States Federal income tax laws
and regulations in effect at the time of the exchange; neither the Company, the
Trustee nor the Security Registrar shall issue Registered Securities for Bearer
Securities if it has received an Opinion of Counsel that as a result of such
issuance the Company would suffer adverse consequences under the United States
Federal income tax laws then in effect and the Company has delivered to the
Trustee a Company Order directing the Trustee not to make such issuances
thereafter unless and until the Trustee receives a subsequent Company Order to
the contrary. The Company shall deliver copies of such Company Order to the
Security Registrar.


                                      -71-
<PAGE>   82
            For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the repayment of Debt Securities shall
relate, in the case of any Debt Security repaid or to be repaid only in part, to
the portion of the principal of such Debt Security which has been or is to be
repaid.

            SECTION 13.4. Election of Repayment by Remarketing Entities.

            The Company may elect, with respect to Debt Securities of any series
which are repayable at the option of the Holders thereof before their Stated
Maturity, at any time prior to any Repayment Date to designate one or more
Remarketing Entities to purchase, at a price equal to the Repayment Price, Debt
Securities of such series from the Holders thereof who give notice and surrender
their Debt Securities in accordance with Section 13.3.

            SECTION 13.5. Securities Payable on the Repayment Date.

            Notice of exercise of the option of repayment having been given and
the Debt Securities so to be repaid having been surrendered as aforesaid, such
Debt Securities shall, unless purchased in accordance with Section 13.4, on the
Repayment Date become due and payable at the price therein specified and from
and after the Repayment Date such Debt Securities shall cease to bear interest
and shall be paid on the Repayment Date, and the coupons for such interest
appertaining to Bearer Securities so to be repaid, except to the extent provided
above, shall be void, unless the Company shall default in the payment of such
price in which case the Company shall continue to be obligated for the principal
amount of such Debt Securities and shall be obligated to pay interest on such
principal amount at the rate borne by such Debt Securities from time to time
until payment in full of such principal amount.

                               ARTICLE FOURTEEN

              EXCHANGE OF CAPITAL SECURITIES FOR DEBT SECURITIES

            SECTION 14.1. Applicability of Article.

            If an Officers' Certificate or supplemental indenture pursuant to
Section 3.1 provides for the exchange of Capital Securities for Debt Securities
of any series at the election of the Company or otherwise, Debt Securities of
such series shall be exchanged for Capital Securities in accordance with their
terms and (except as otherwise specified in such Officers' Certificate or
supplemental indenture) in accordance with this Article.

            SECTION 14.2. Exchange of Capital Securities for Debt Securities at
Stated Maturity.

            At the Stated Maturity of Debt Securities of any series which may be
exchanged, subject to prepayment prior to such Stated Maturity on the Capital
Exchange Date selected by the Company for Debt Securities of such series, as
described below, early exchange pursuant to Section 14.3 or payment in cash
pursuant to Section 5.2, 14.16 or 14.17, the Company shall


                                      -72-
<PAGE>   83
exchange Capital Securities with a Market Value equal to the principal amount of
the Outstanding Debt Securities of such series for the Debt Securities of such
series in whole.

            The Company shall give notice in the manner provided in Section 1.6
to Holders of the Debt Securities of any series to be exchanged, the Trustee and
the Capital Exchange Agent as to the type of Capital Securities to be exchanged
for the Debt Securities of such series on the Capital Exchange Date for Debt
Securities of such series. Such notice shall include a form of Capital Security
Election Form substantially as set forth in Section 14.9, shall make the
statements and contain the information included in Section 14.4(a), and shall be
given no less than 90 days prior to the Stated Maturity of such Debt Securities.
Notice of such Capital Exchange Date, together with the amount of Capital
Securities being exchanged for each $1,000 principal amount of Debt Securities
of such series, or the minimum denomination of the Debt Securities of such
series, if larger, shall also be given by the Company in the manner required by
Section 14.4(b) not less than three Business Days prior to such Capital Exchange
Date.

            The Capital Exchange Date for any prepayment of Debt Securities of
each series may be selected by the Company to be any date between a date 60 days
prior to the Stated Maturity of such Debt Securities and such Stated Maturity,
inclusive, and to be the date of the closing of the Secondary Offering for Debt
Securities of such series. In the event the Company fails to effect such
Secondary Offering, the Capital Exchange Date will be the Stated Maturity of the
Debt Securities of such series. Notice of each such Capital Exchange Date,
together with the amount of Capital Securities being exchanged for each $1,000
principal amount of Debt Securities of such series, or the minimum denomination
of the Debt Securities of such series, if larger, shall also be given by the
Company in the manner required by Section 14.4(b) not less than three Business
Days prior to such Capital Exchange Date.

            The Company will effect each Secondary Offering such that the
closing of the Secondary Offering will occur on the Capital Exchange Date.

            SECTION 14.3. Right of Early Exchange of Capital Securities for Debt
Securities.

            The Debt Securities of any series to be exchanged may be exchanged
at the election of the Company, as a whole or from time to time in part, prior
to the Stated Maturity thereof for Capital Securities with a Market Value equal
to the principal amount of such Debt Securities on any early Capital Exchange
Date, together with accrued interest to such Capital Exchange Date.

            The Company shall give notice in the manner provided in Section 1.6
to Holders of the Debt Securities of any series to be exchanged, the Trustee and
the Capital Exchange Agent not less than 90 days nor more than 120 days prior to
any early Capital Exchange Date for Debt Securities of such series, which notice
shall include a form of Capital Security Election Form substantially as set
forth in Section 14.9 and make the statements and contain the information
included in Section 14.4(a). Notice of each such early Capital Exchange Date,
together with the amount of Capital Securities being exchanged for each $1,000
principal amount of Debt Securities of such series, or the minimum denomination
of such series, if larger, shall also be given by


                                      -73-
<PAGE>   84
the Company in the manner required by Section 14.4(b) not less than three
Business Days prior to such early Capital Exchange Date.

            The Company may at its option accelerate any such Capital Exchange
Date within the 60-day period prior to such Capital Exchange Date by giving
notice of such accelerated Capital Exchange Date, together with the amount of
Capital Securities being exchanged for each $1,000 principal amount of Debt
Securities of such series, or the minimum denomination of such series, if
larger, in the manner required by Section 14.4(b) not less than three Business
Days prior to such accelerated Capital Exchange Date.

            The Company will effect each Secondary Offering such that the
closing of such Secondary Offering will occur on the Capital Exchange Date.

            SECTION 14.4. Notices of Exchange.

            (a) All notices of exchange subject to this paragraph shall state:

            (1) the type of Capital Securities to be exchanged for the Debt
      Securities of such series on the Capital Exchange Date for Debt Securities
      of such series;

            (2)   the proposed Capital Exchange Date;

            (3) that each Holder of Debt Securities of such series being
      exchanged will receive on such Capital Exchange Date accrued and unpaid
      interest in cash and may elect to receive on such Capital Exchange Date
      Capital Securities with a Market Value equal to the principal amount of
      the Debt Securities of such series owned by such Holder and that, in the
      absence of any such election by the Holder, such Holder will be deemed to
      have received on such Capital Exchange Date Capital Securities having such
      Market Value and to have elected to have such Capital Securities sold for
      such Holder by the Company in the related Secondary Offering for cash
      proceeds to such Holder on such Capital Exchange Date equal to the
      aggregate principal amount of all Debt Securities of such series being
      exchanged owned by such Holder;

            (4) that on such Capital Exchange Date the Capital Exchange Price
      will become due and payable upon each such Debt Security to be exchanged
      and that interest thereon will cease to accrue on and after said date;

            (5) if less than all the Outstanding Debt Securities of any series
      are to be exchanged, the identification and principal amount of the
      particular Debt Securities to be exchanged;

            (6) that each Holder for whom Capital Securities are being offered
      in the Secondary Offering shall be deemed to have appointed the Company
      its attorney-in-fact to execute any and all documents and agreements the
      Company deems necessary or appropriate to effect such Secondary Offering;


                                      -74-
<PAGE>   85
            (7) (A) that the Company will assume, unless advised to the contrary
      in writing within 30 days after the date of notice of exchange, that the
      Capital Securities are to be offered for the account of the Holder, that
      such Holder has not held any position, office or other material
      relationship with the Company within three years preceding the Secondary
      Offering, that the Holder owns no other Capital Securities, and that after
      completion of the Secondary Offering the Holder will own less than one
      percent of the class of such Capital Securities, and (B) that if any of
      these assumptions is not correct, the Holder shall promptly so advise the
      Company;

            (8) the Place or Places of Capital Exchange;

            (9) that Bearer Securities may be surrendered for payment or
      exchange only at a Place or Places of Capital Exchange which are outside
      the United States, except as otherwise provided in Section 10.2; and

            (10) the CUSIP number, if any.

            (b) Each notice of exchange subject to this paragraph shall be given
in the manner provided in Section 1.6 to each Holder of Debt Securities to be
exchanged, and the Company shall forthwith give such notice by telephone to the
Trustee and the Capital Exchange Agent, promptly confirmed in writing.

            (c) (1) Except as may otherwise be specified pursuant to Section 3.1
for Debt Securities of any series, if less than all the Debt Securities of any
series are to be exchanged, the Company shall at least 135 days prior to the
related Capital Exchange Date (unless a shorter period shall be satisfactory to
the Trustee) notify the Trustee of such Capital Exchange Date and of the
principal amount of Debt Securities of such series to be exchanged and the
particular Debt Securities to be exchanged shall be selected not more than 135
days prior to the related Capital Exchange Date by the Trustee, from the
Outstanding Debt Securities of such series not previously exchanged, by such
method as the Trustee shall deem fair and appropriate and which may provide for
the selection for exchange of portions (equal to the minimum authorized
denomination for Debt Securities of such series or any integral multiple
thereof) of the principal amount of Registered or Bearer Securities of such
series of a denomination larger than the minimum authorized denomination for
Debt Securities of such series.

            In any case where Debt Securities of such series are registered in
the same name, the Trustee in its discretion may treat the aggregate principal
amount so registered as if it were represented by one Debt Security of such
series.

            (2) The Trustee shall promptly notify the Company in writing of the
      Debt Securities selected for exchange and, in the case of any Debt
      Securities selected for partial exchange, the principal amount thereof to
      be exchanged.

            (3) For all purposes of this Indenture, unless the context otherwise
      requires, all provisions relating to the exchange of Debt Securities shall
      relate, in the case of any Debt


                                      -75-
<PAGE>   86
         Securities exchanged or to be exchanged only in part, to the portion of
         the principal amount of such Debt Security which has been or is to be
         exchanged.

                  SECTION 14.5. Rights and Duties of Holders of Debt Securities
to be Exchanged for Capital Securities.

                  (a) Subject to Section 5.3, and without prejudice to the
rights pursuant to Section 14.13 of Holders of Debt Securities of any series to
be exchanged, no Holder of Debt Securities of such series shall be entitled to
receive any cash from the Company on any Capital Exchange Date or at the Stated
Maturity of any Debt Security of such series except from the proceeds of the
sale of such Holder's Capital Securities in the related Secondary Offering and
except as provided herein with respect to fractional Capital Securities, amounts
equal to expenses of the sale in the related Secondary Offering of such Capital
Securities, accrued and unpaid interest and acceleration upon an Event of
Default. In the event that the Company does not effect such Secondary Offering,
such Holder will receive Capital Securities with a Market Value equal to the
principal amount of Debt Securities of such series owned by such Holder which
are subject to such exchange and not cash other than in lieu of any fractional
Capital Securities and for accrued and unpaid interest, without prejudice to
such Holder's rights pursuant to Section 14.13.

                  (b) Each Holder for whom Capital Securities are being offered
in the Secondary Offering shall be deemed to have appointed the Company its
attorney-in-fact to execute any and all documents and agreements the Company
deems necessary or appropriate to effect such Secondary Offering.

                  (c) Unless advised to the contrary in writing within 30 days
following the date of the notice described in Section 14.4(a) by any Holder for
whom Capital Securities are being offered in the Secondary Offering, the Company
shall assume for the purposes of any Secondary Offering that the Capital
Securities are to be offered for the account of such Holder, that such Holder
has not held any position, office or other material relationship with the
Company within three years preceding the Secondary Offering, that such Holder
owns no other Capital Securities, and that after completion of the Secondary
Offering such Holder will own less than one percent of the class of such Capital
Securities.

                  (d) Each Holder for whom Capital Securities are being offered
in the Secondary Offering agrees to indemnify and hold harmless the Company, any
other Holder, and any underwriter, agent or other similar person from and
against any and all losses, claims, damages and liabilities resulting from or
based upon any untrue statement or alleged untrue statement of any material fact
contained in any notice of exchange, any offering memorandum or selling document
or registration statement relating to the Secondary Offering, any preliminary
prospectus or prospectus contained therein, or any amendment thereof or
supplement thereto, or resulting from or based upon the omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, which untrue statement,
alleged untrue statement, omission or alleged omission is made therein (i) in
reliance upon and in conformity with any written information furnished to the
Company by or on behalf of any such Holder specifically for use in connection
with the preparation thereof or (ii) because of such


                                      -76-
<PAGE>   87
Holder's failure to advise the Company in writing that any of the assumptions
described in Section 14.4(a)(7)(A) and Subsection (c) of this Section is
incorrect.

                  (e) In order for any Holder who has duly returned a Capital
Security Election Form to receive Capital Securities on any Capital Exchange
Date for any Debt Security of any series, (1) the Holder of any Registered
Security to be exchanged shall surrender such Debt Security (with, if the
Company or the Trustee so requires, due endorsement by, or a written instrument
of transfer in form satisfactory to the Company and the Trustee duly executed
by, the Holder of any Registered Security or his attorney duly authorized in
writing) to the Capital Exchange Agent on the Capital Exchange Date, and (2) the
Holder of any Bearer Security to be exchanged shall surrender such Debt Security
and all unmatured coupons and all matured coupons in default with the Capital
Security Election Form at a Place of Capital Exchange outside the United States
designated pursuant to Section 14.4(a)(8) except as otherwise provided in
Section 10.2. If the Holder of a Bearer Security is unable to produce any such
Debt Security or coupons, the surrender of such Debt Security or coupons may be
waived by the Company and the Trustee, if there be furnished to them such
security or indemnity as they may require to save each of them and any Capital
Exchange Agent harmless in respect of such Debt Security or coupons. Except as
provided in Section 3.7, no payment or adjustment shall be made upon any
exchange on account of any interest accrued on any Debt Securities surrendered
for exchange or on account of any dividends or interest on the Capital
Securities issued upon exchange.

                  (f) Debt Securities of any series to be exchanged shall be
deemed to have been exchanged on the Capital Exchange Date therefor in
accordance with the foregoing provisions, and at such time the rights of the
Holders of such Debt Securities as Holders shall cease (subject to the
provisions of Section 3.7 and without prejudice to the rights of Holders of Debt
Securities of such series pursuant to Section 14.13), and the Person or Persons
entitled to receive the Capital Securities issuable upon such exchange shall be
treated for all purposes as the record holder or holders of such Capital
Securities at such time.

                  SECTION 14.6. Election to Exchange.

                  The election of the Company to exchange Capital Securities for
Debt Securities pursuant to Section 14.3 shall be evidenced by a Board
Resolution.

                  SECTION 14.7. Deposit of Capital Exchange Price.

                  On any Capital Exchange Date for Debt Securities of any series
which may be exchanged, the Company shall deposit with the Trustee or with a
Capital Exchange Agent in the Borough of Manhattan, The City of New York (or, if
the Company is acting as Capital Exchange Agent, segregate and hold in trust as
provided in Section 10.3) Capital Securities and an amount of money which
together are sufficient to pay the Capital Exchange Price of, and (except if
such Capital Exchange Date shall be an Interest Payment Date) accrued interest
on, all the Debt Securities of such series or portions thereof which are to be
exchanged on that date; provided, however, that deposits with respect to Bearer
Securities shall be made with a Capital Exchange Agent or Capital Exchange
Agents located outside the United States except as otherwise provided in Section
10.2, unless otherwise specified as contemplated by Section 3.1.


                                      -77-
<PAGE>   88
                  SECTION 14.8. Debt Securities Due on Capital Exchange Date;
Debt Securities Exchanged in Part.

            Notice of exchange having been given as aforesaid, the Debt
Securities of any series so to be exchanged shall, on the Capital Exchange Date
for such Debt Securities, become due and payable at the Capital Exchange Price
therein specified, and from and after such date (unless the Company shall
default in the payment of the Capital Exchange Price and accrued interest) Debt
Securities of such series to be exchanged shall cease to bear interest and the
coupons for such interest appertaining to any Bearer Securities to be exchanged,
except to the extent provided below, shall be void. Upon surrender of any Debt
Security of such series for exchange in accordance with said notice, such Debt
Security shall be paid by the Company at the Capital Exchange Price, together
with accrued interest to the Capital Exchange Date; provided, however, that if
such Capital Exchange Date is an Interest Payment Date, the interest payable on
such date shall be paid to the Holder of Debt Securities of such series
according to the terms of the Debt Securities of such series and the provisions
of Section 3.7; and provided further, that exchanges of Bearer Securities shall
be made only and installments of interest on Bearer Securities whose Stated
Maturity is on or prior to the Capital Exchange Date shall be payable only at an
office or agency located outside the United States except as otherwise provided
in Section 10.2 and, unless otherwise specified as contemplated by Section 3.1,
only upon presentation and surrender of those Bearer Securities and coupons.

            If any Bearer Security surrendered for exchange shall not be
accompanied by all unmatured coupons and all matured coupons in default, such
Bearer Security may be paid after deducting from the Capital Exchange Price an
amount equal to the face amount of all missing coupons, or the surrender of such
missing coupons may be waived by the Company and the Trustee if there be
furnished to them such security or indemnity as they may require to save each of
them and any Capital Exchange Agent harmless. If thereafter the Holder of such
Bearer Security shall surrender to the Trustee or Capital Exchange Agent any
such missing coupon in respect of which a deduction shall have been made from
the Capital Exchange Price, such Holder shall be entitled to receive the amount
so deducted; provided, however, that interest on Bearer Securities shall be
payable only at an office or agency located outside of the United States except
as otherwise provided in Section 10.2.

            If any Debt Security of any series called for exchange shall not be
so paid or exchanged upon surrender thereof for exchange, the principal shall,
until paid, bear interest from such Capital Exchange Date at the rate or rates
prescribed therefor in such Debt Security; provided, however, that in the case
of Bearer Securities, any such principal and interest thereon shall be paid at
an office or agency located outside the United States except as otherwise
provided in Section 10.2.

            Any Registered Security which is to be exchanged only in part shall
be surrendered as provided herein (with, if the Company or the Trustee so
requires, due endorsement by, or a written instrument of transfer in form
satisfactory to the Company and the Trustee duly executed by, the Holder or his
attorney duly authorized in writing) and the Company shall execute, the Trustee
shall authenticate and there shall be delivered to the Holder of such Debt


                                      -78-
<PAGE>   89
Security without service charge a new Registered Security or Securities of the
same series, of any authorized denomination or denominations as requested by
such Holder in aggregate principal amount equal to and in exchange for the
unexchanged portion of principal of the Debt Security so surrendered. Any Bearer
Security which is to be exchanged only in part shall be surrendered as provided
herein and the Company shall execute, the Trustee shall authenticate and there
shall be delivered to the Holder of such Debt Security without service charge a
new Registered Security or Securities or new Bearer Security or Securities (and
all appurtenant unmatured coupons and coupons in default) or any combination
thereof of the same series, of any surrendered denomination or denominations as
requested by such Holder in aggregate principal amount equal to and in exchange
for the unexchanged portion of principal of the Debt Security so surrendered;
provided, however, the issuance of a Registered Security therefor shall be
subject to applicable laws and regulations, including provisions of the United
States federal income tax laws and regulations in effect at the time of the
exchange; neither the Company, the Trustee nor the Security Registrar shall
issue Registered Securities in exchange for Bearer Securities if it has received
an Opinion of Counsel that as a result of such exchanges the Company would
suffer adverse consequences under the United States Federal income tax laws then
in effect and the Company has delivered to the Trustee a Company Order directing
the Trustee not to make such exchanges thereafter unless and until the Company
delivers to the Trustee a subsequent Company Order to the contrary. The Company
shall deliver copies of such Company Orders to the Security Registrar.

            SECTION 14.9. Form of Capital Security Election Form.

            The form of Capital Security Election Form shall be substantially as
follows with such additions, deletions or changes thereto as may be approved by
the Company:


                                      -79-
<PAGE>   90
                        CAPITAL SECURITY ELECTION FORM

To:  [Insert Names and Addresses
     of Capital Exchange Agents]

            The undersigned Holder of [insert title of Debt Security] ("Debt
Securities") of Firstar Corporation hereby elects to receive on the Capital
Exchange Date determined pursuant to the Indenture dated as of __________, ____
("Indenture"), between Firstar Corporation and ____________________, as Trustee,
and referred to in the notice of exchange published or delivered to the
undersigned with this Capital Security Election Form, Capital Securities of
Firstar Corporation with a Market Value equal to the principal amount of the
Debt Securities being exchanged owned by the undersigned Holder and, in the case
of Bearer Securities, delivered herewith together with all coupons appertaining
thereto. Unless this Capital Security Election Form together with, in the case
of Bearer Securities, such Bearer Securities and coupons, is received by any
Capital Exchange Agent named above at an address shown above on or prior to
________________________, the Holder will be deemed to have elected to
participate in the sale of the Holder's Capital Securities in the Secondary
Offering and will receive cash on the Capital Exchange Date in an amount equal
to the principal amount of all Debt Securities being exchanged owned by the
Holder. All terms used herein and not otherwise defined herein shall have the
meanings specified in the Indenture.

Dated____________________                       ____________________________
                                                Name of Holder

            SECTION 14.10. Fractional Capital Securities.

            No fractional Capital Securities shall be issued upon exchange for
any Debt Securities. If more than one Debt Security of any series shall be
surrendered for exchange at one time by the same Holder, the amount of all
Capital Securities which shall be issuable upon exchange thereof shall be
computed on the basis of the aggregate principal amount of Debt Securities of
such series so surrendered. In lieu of issuing any fractional Capital Security,
the Company shall pay a cash adjustment in respect of such fraction in an amount
equal to the same fraction of the Market Value of the Capital Security.

            SECTION 14.11. Company to Obtain Governmental and Regulatory
Approvals.

            The Company covenants that if any Capital Securities required to be
exchanged for Debt Securities hereunder require registration with or approval of
any governmental authority under any federal or state law, or any national
securities exchange, before such Capital Securities may be issued, the Company
will in good faith and as expeditiously as possible endeavor to cause such
Capital Securities to be duly registered or approved, as the case may be;
PROVIDED, HOWEVER, that nothing in this Section shall be deemed to affect in any
way the obligation of the Company to exchange Capital Securities for Debt
Securities as provided in this Article.


                                      -80-
<PAGE>   91
            SECTION 14.12. Taxes on Exchange.

            The Company will pay any and all transfer, stamp or similar taxes
that may be payable in respect of the issue or delivery of Capital Securities in
exchange for Debt Securities pursuant hereto.

            SECTION 14.13. Covenants as to Capital Securities and Secondary
Offering.

            (a) The Company covenants that it will issue, or cause to be issued,
Capital Securities of the type, in the amounts and at the times required by this
Indenture.

            (b) The Company covenants that all Capital Securities which may be
issued in exchange for Debt Securities will upon issuance be duly and validly
issued and, if applicable, fully paid and nonassessable.

            (c) The Company unconditionally undertakes to sell Capital
Securities in each Secondary Offering (and to bear all expenses of each
Secondary Offering, including underwriting discounts and commissions) at the
times and in the manner required by this Indenture unless all Holders have duly
elected to receive Capital Securities on the related Capital Exchange Date.

            (d) The Company agrees to indemnify and hold harmless in connection
with any Secondary Offering any Holder for the account of whom Capital
Securities are being offered and sold from and against any and all losses,
claims, damages and liabilities resulting from or based upon any untrue
statement or alleged untrue statement of any material fact contained in any
notice of exchange, any offering memorandum or selling document or registration
statement relating to the Secondary Offering, any preliminary prospectus or
prospectus contained therein, or any amendment thereof or supplement thereto, or
resulting from or based upon the omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, or resulting from the Company's failure to comply with
Section 14.11; provided, however, the Company will not be liable in any such
case to the extent that any such loss, claim, damage or liability arises out of
or is based upon any such untrue statement, alleged untrue statement, omission
or alleged omission made therein (i) in reliance upon and in conformity with
written information furnished to the Company by or on behalf of any such Holder
specifically for use in connection with the preparation thereof or (ii) because
of such Holder's failure to advise the Company in writing that any of the
assumptions described in Section 14.4(a)(7)(A) is incorrect. In connection with
any Secondary Offering, the Company agrees to obtain appropriate indemnification
of any Holder for the account of whom Capital Securities are being offered and
sold in any Secondary Offering from any underwriter, agent or other similar
person.

            SECTION 14.14. Provision in Case of Consolidation, Merger or
Transfer of Assets.

            In case of any consolidation of the Company with, or merger of the
Company into, any other corporation (other than a consolidation or merger in
which the Company is the continuing corporation), or in case of any conveyance
or transfer of the properties and assets of


                                      -81-
<PAGE>   92
the Company substantially as an entirety, the corporation formed by such
consideration or the corporation into which the Company shall have been merged
or the corporation which shall have acquired such assets of the Company, as the
case may be, shall execute and deliver to the Trustee a supplemental indenture
providing that the Holder of each Debt Security then Outstanding shall have the
right thereafter to receive securities of such successor on the Capital Exchange
Date for such Debt Security with a Market Value equal to the principal amount of
such Debt Security. The above provisions of this Section shall similarly apply
to successive consolidations, mergers, conveyances or transfers.

            SECTION 14.15. Responsibility of Trustee.

            The Trustee shall not at any time be under any duty or
responsibility to any Holder of Debt Securities of any series to be exchanged to
determine the Market Value of any Capital Securities delivered in exchange for
Debt Securities of such series and may rely on and shall be entitled to receive
prior to any Capital Exchange Date for Debt Securities of such series an
Officers' Certificate of the Company as to the Market Value of the Capital
Securities being exchanged for the Debt Securities of such series and the amount
of Capital Securities being exchanged for each $1,000 principal amount of Debt
Securities of such series or the minimum denomination of such series, if larger,
and that such Capital Securities qualify as Capital Securities under the
definition thereof contained herein. The Trustee shall not be accountable with
respect to the validity or value (or the kind or amount) of any Capital
Securities which may at any time be issued or delivered in exchange for any Debt
Security; and the Trustee does not make any representation with respect thereto.
The Trustee shall not be responsible for any failure of the Company to issue,
transfer or deliver any Capital Securities or Capital Security certificates or
other securities or property upon the surrender of any Debt Security for the
purpose of exchange or to comply with any of the covenants of the Company
contained in this Article.

            SECTION 14.16. Revocation of Obligation to Exchange Capital
Securities for Debt Securities.

            The Company's obligations to exchange Capital Securities for Debt
Securities of any series as provided in Section 14.2 is absolute and
unconditional; provided, however, that such obligation may be revoked at the
option of the Company at any time on not less than 60 days' prior notice given
in the manner provided in Section 1.6 to the Holders of Debt Securities of such
series, the Trustee and the Capital Exchange Agent, if the Company shall
determine that under then regulations of the Company's Primary Federal Regulator
either the Debt Securities are no longer includable as capital or it is no
longer necessary for the Company to be obligated to exchange Capital Securities
for Debt Securities in order for the Debt Securities to maintain the same
capital treatment as they are then receiving under the regulations or if
approval of the Primary Federal Regulator is obtained for such revocation.

            In the event such obligation is revoked

            (a) the Company will pay the Debt Securities of such series in cash
at 100% of the principal amount thereof on the Stated Maturity thereof, and


                                      -82-
<PAGE>   93
            (b) the Company may, at any time on or after a date selected by the
Company, on not less than 60 days' prior notice given in the manner provided in
Section 1.6 to the Holders of Debt Securities of such series and the Trustee,
redeem the Debt Securities of such series, in whole or in part, for cash at 100%
of the principal amount thereof, plus accrued interest to the Redemption Date.

            SECTION 14.17. Optional Securities Funds.

            (a) (1) With respect to Debt Securities of any series for which an
Officers' Certificate or supplemental indenture pursuant to Section 3.1 provides
that the Debt Securities of such series are exchangeable for Capital Securities,
the Company may elect to establish a fund (referred to herein as the "Optional
Securities Funds") to which funds may at any time be designated by the Company
as provided in Section 15.2 as if such Optional Securities Funds were Securities
Funds (as defined in Article Fifteen) to be used to pay the principal of the
Debt Securities of such series.

            (2) Notwithstanding any provisions to the contrary contained in this
      Indenture or in the Debt Securities of any series, neither funds
      designated as Optional Securities Funds nor any other property from time
      to time held as Optional Securities Funds shall be deemed to be for any
      purpose property of the Holders or trust funds for the benefit of the
      Holders, and the Optional Securities Funds shall not constitute security
      for the payment of the Debt Securities.

            (b) In lieu of, or in addition to, any exchange of Capital
Securities for Debt Securities of any series which may be made in accordance
with the provisions of Sections 14.2 and 14.3, the Company may elect to redeem
the Debt Securities of such series in accordance with the provisions of Section
11.6 and the terms of the Debt Securities of each series, in whole or in part,
by paying the principal of such Debt Securities with funds designated as
Optional Securities Funds at a price equal to the percentage of the principal
amount established in the terms of the Debt Securities of such series on the
Redemption Date of the Debt Securities to be so redeemed, and (except if such
Redemption Date shall be an Interest Payment Date) by paying accrued interest on
such Debt Securities. If such Redemption Date is an Interest Payment Date, the
interest payable on such date shall be paid to the Holder of Debt Securities of
such series according to the terms of the Debt Securities of such series and the
provisions of Section 3.7.

            (c) The Company shall give notice of such proposed redemption in the
manner provided in Section 1.6 to the Holders of the Debt Securities of such
series within the time prescribed for the giving of the initial notice in
Section 14.2 or 14.3, depending upon the Redemption Date selected by the
Company. Such notice shall state the Redemption Date and the place or places
where the Debt Securities of the series to be paid are to be surrendered for
payment; provided, however, if such redemption is of less than all of the Debt
Securities of such series and is to be made on a Capital Exchange Date specified
in accordance with Section 14.2 or 14.3, then such notice may be incorporated
into any initial notice of such Capital Exchange Date and provided that no
notice of any redemption may be given unless there are sufficient Optional
Securities Funds to pay the principal amount of the Debt Securities to be
redeemed.


                                      -83-
<PAGE>   94
            (d) If less than all the Debt Securities of any series are to be so
redeemed, then Sections 14.4(c) and 14.8 shall apply to the redemption in the
same manner as if such Debt Securities were to be exchanged for Capital
Securities.

            (e) Funds designated as Optional Securities Funds shall be released
from such designation under the circumstances described in Section 15.3.


                               ARTICLE FIFTEEN

                               SECURITIES FUNDS

            SECTION 15.1. Creation of Securities Funds.

            A fund (the "Securities Funds") will be established when specified
in an Officers' Certificate or supplemental indenture pursuant to Section 3.1
for the Debt Securities of any series pursuant to which funds may be designated
by the Company as provided in Section 15.2, to be used to pay the principal of
the Debt Securities of that series.

            Notwithstanding any provision to the contrary contained in this
Indenture or in the Debt Securities of any series, neither funds designated as
Securities Funds nor any other property from time to time held as Securities
Funds shall be deemed to be for any purpose property of the Holders or trust
funds for the benefit of the Holders, and the Securities Funds shall not
constitute security for the payment of the Debt Securities.

            SECTION 15.2. Designations of Securities Funds.

            The Securities Funds will consist of amounts equal to (i) the net
proceeds of the sale of Capital Securities for cash from time to time after the
date of initial issuance of the Debt Securities of any series for which funds
may be designated by the Company as provided in this Section, and (ii) the
market value, as determined by the Company, of Capital Securities sold from time
to time after the date of initial issuance of the Debt Securities of such series
in exchange for other property, less the expenses to effect any such exchanges,
and (iii) other funds which the regulations of the Primary Federal Regulator
then permit for the payment of principal of "mandatory convertible securities
(equity commitment notes)" as defined in such regulations; provided that (x) the
Company has designated such amounts as Securities Funds on its books and records
in the manner required by the Primary Federal Regulator, and (y) there shall be
deducted from the Securities Funds an amount equal to the amount of any funds
used to redeem or repay the Debt Securities of such series for which Securities
Funds are required to be designated or any similar securities.

            SECTION 15.3. Covenant of the Company to Obtain Securities Funds.

            Notwithstanding anything else contained herein, the Company hereby
covenants and agrees that with regard to the Debt Securities of any series which
by its terms requires the designation of Securities Funds (i) by the Interest
Payment Date which occurs on or next pre-


                                      -84-
<PAGE>   95
ceding the date when one-third of the period from the date of issuance of the
Debt Securities of such series to their Stated Maturity has elapsed, it will
have obtained Securities Funds in an amount that will equal at least one-third
of the original aggregate principal amount of the Debt Securities of such series
(or such lesser amount as the Primary Federal Regulator may permit from time to
time) and will have prepared and delivered to the Trustee an Officers'
Certificate to the foregoing effect, (ii) by the Interest Payment Date which
occurs on or next preceding the date when two-thirds of the period from the date
of issuance of the Debt Securities of such series to their Stated Maturity has
elapsed, it will have obtained Securities Funds in an amount that will equal at
least two-thirds of the original aggregate principal amount of the Debt
Securities of such series (or such lesser amount as the Primary Federal
Regulator may permit from time to time) and will have prepared and delivered to
the Trustee an Officers' Certificate to the foregoing effect, and (iii) by 60
days prior to the Stated Maturity of the Debt Securities of such series, it will
have obtained Securities Funds in an amount that will equal not less than the
original aggregate principal amount of the Debt Securities of such series (or
such lesser amount as the Primary Federal Regulator may permit from time to
time) and will have prepared and delivered to the Trustee an Officers'
Certificate to the foregoing effect; provided, however, that such covenant and
agreement of the Company shall be cancelled and amounts theretofore designated
as Securities Funds will be released from such designation in the event and to
the extent that the Company shall determine that under the regulations of the
Company's Primary Federal Regulator either the Debt Securities are no longer
includable as capital or it is no longer necessary for the Company to be
obligated to pay the principal of the Debt Securities out of Securities Funds in
order for the Debt Securities to maintain the same capital treatment as they are
then receiving under such regulations, in the event and to the extent that
approval of the Primary Federal Regulator is obtained for such cancellation and
release or in the event and to the extent that the Company shall have exchanged
or redeemed such Debt Securities pursuant to the terms of such Debt Securities
of such series from a source other than amounts designated as Securities Funds.

                               ARTICLE SIXTEEN

                    MEETINGS OF HOLDERS OF DEBT SECURITIES

            SECTION 16.1. Purposes For Which Meetings May Be Called.

            If Debt Securities of a series are issuable in whole or in part as
Bearer Securities, a meeting of Holders of Debt Securities of such series may be
called at any time and from time to time pursuant to this Article to make, give
or take any request, demand, authorization, direction, notice, consent, waiver
or other Act provided by this Indenture to be made, given or taken by Holders of
Debt Securities of such series.

            SECTION 16.2. Call, Notice and Place of Meetings.

            (a) The Trustee may at any time call a meeting of Holders of Debt
Securities of any series issuable as Bearer Securities for any purpose specified
in Section 16.1, to be held at such time and at such place in the Borough of
Manhattan, The City of New York, or in London as the Trustee shall determine.
Notice of every meeting of Holders of Debt Securities of any


                                      -85-
<PAGE>   96
series, setting forth the time and the place of such meeting and in general
terms the action proposed to be taken at such meeting, shall be given, in the
manner provided in Section 1.6, not less than 21 nor more than 180 days prior to
the date fixed for the meeting.

            (b) In case at any time the Company, pursuant to a Board Resolution,
or the Holders of at least 10% in principal amount of the Outstanding Debt
Securities of any series shall have requested the Trustee to call a meeting of
the Holders of Debt Securities of such series for any purpose specified in
Section 16.1, by written request setting forth in reasonable detail the action
proposed to be taken at the meeting, and the Trustee shall not have made the
first publication of the notice of such meeting within 21 days after receipt of
such request or shall not thereafter proceed to cause the meeting to be held as
provided herein, then the Company or the Holders of Debt Securities of such
series in the amount above specified, as the case may be, may determine the time
and the place in the Borough of Manhattan, The City of New York, or in London
for such meeting and may call such meeting for such purposes by giving notice
thereof as provided in subsection (a) of this Section.

            SECTION 16.3. Persons Entitled to Vote at Meetings.

            To be entitled to vote at any meeting of Holders of Debt Securities
of any series, a Person shall be (1) a Holder of one or more Outstanding Debt
Securities of such series, or (2) a Person appointed by an instrument in writing
as proxy for a Holder or Holders of one or more Outstanding Debt Securities of
such series by such Holder or Holders. The only Persons who shall be entitled to
be present or to speak at any meeting of Holders of Debt Securities of any
series shall be the Persons entitled to vote at such meeting and their counsel,
any representatives of the Trustee and its counsel and any representatives of
the Company and its counsel.

            SECTION 16.4. Quorum; Action.

            The Persons entitled to vote a majority in principal amount of the
Outstanding Debt Securities of a series shall constitute a quorum for a meeting
of Holders of Debt Securities of such series; provided, however, that if any
action is to be taken at such meeting with respect to a consent or waiver which
this Indenture expressly provides may be given by the Holders of not less than a
majority in principal amount of the Outstanding Debt Securities of a series, the
Persons entitled to vote a majority in principal amount of the Outstanding Debt
Securities of such series shall constitute a quorum. In the absence of a quorum
within 30 minutes of the time appointed for any such meeting, the meeting shall,
if convened at the request of Holders of Debt Securities of such series, be
dissolved. In the absence of a quorum in any other case the meeting may be
adjourned for a period of not less than 10 days as determined by the chairperson
of the meeting prior to the adjournment of such meeting. In the absence of a
quorum at any such adjourned meeting, such adjourned meeting may be further
adjourned for a period of not less than 10 days as determined by the chairperson
of the meeting prior to the adjournment of such adjourned meeting. Notice of
this reconvening of any adjourned meeting shall be given as provided in Section
16.2(a), except that such notice need be given only once not less than five days
prior to the date on which the meeting is scheduled to be reconvened. Notice of
the reconvening of an adjourned meeting shall state expressly the percentage, as
provided above, of the


                                      -86-
<PAGE>   97
principal amount of the Outstanding Debt Securities of such series which shall
constitute a quorum.

            Except as limited by the proviso to Section 9.2, any resolution
presented to a meeting or adjourned meeting duly reconvened at which a quorum is
present as aforesaid may be adopted only by the affirmative vote of the Holders
of majority in principal amount of the Outstanding Debt Securities of that
series, provided however, that, except as limited by the proviso to Section 9.2,
any resolution with respect to any consent or waiver which this Indenture
expressly provides may be given by the Holders of not less than a majority in
principal amount of the Outstanding Debt Securities of a series may be adopted
at a meeting or an adjourned meeting duly reconvened and at which a quorum is
present as aforesaid only by the affirmative vote of the Holders of a majority
in principal amount of the Outstanding Debt Securities of that series; and
provided, further, that, except as limited by the proviso to Section 9.2, any
resolution with respect to any request, demand, authorization, direction,
notice, consent, waiver or other Act which this Indenture expressly provides may
be made, given or taken by the Holders of a specified percentage, which is less
than a majority, in principal amount of the Outstanding Debt Securities of a
series may be adopted at a meeting or an adjourned meeting duly reconvened and
at which a quorum is present as aforesaid by the affirmative vote of the Holders
of such specified percentage in principal amount of the Outstanding Debt
Securities of that series.

            Any resolution passed or decision taken at any meeting of Holders of
Debt Securities of any series duly held in accordance with this Section shall be
binding on all the Holders of Debt Securities of such series and the related
coupons, whether or not present or represented at the meeting.

            SECTION 16.5. Determination of Voting Rights; Conduct and
Adjournment of Meetings.

            (a) Notwithstanding any other provisions of this Indenture, the
Trustee may make such reasonable regulations as it may deem advisable for any
meeting of Holders of Debt Securities of such series in regard to proof of the
holding of Debt Securities of such series and of the appointment of proxies and
in regard to the appointment and duties of inspectors of votes, the submission
and examination of proxies, certificates and other evidence of the right to
vote, and such other matters concerning the conduct of the meeting as it shall
deem appropriate. Except as otherwise permitted or required by any such
regulations, the holding of Debt Securities shall be proved in the manner
specified in Section 1.4 and the appointment of any proxy shall be proved in the
manner specified in Section 1.4 or, in the case of Bearer Securities, by having
the signature of the person executing the proxy witnessed or guaranteed by any
trust company, bank or banker authorized by Section 1.4 to certify to the
holding of Bearer Securities. Such regulations may provide that written
instruments appointing proxies, regular on their face, may be presumed valid and
genuine without the proof specified in Section 1.4 or other proof.

            (b) The Trustee shall, by an instrument in writing, appoint a
temporary chairperson of the meeting, unless the meeting shall have been called
by the Company or by Holders of Debt Securities as provided in Section 16.2(b),
in which case the Company or the Holders of


                                      -87-
<PAGE>   98
Debt Securities of the series calling the meeting, as the case may be, shall in
like manner appoint a temporary chairperson. A permanent chairperson and a
permanent secretary of the meeting shall be elected by vote of the Persons
entitled to vote a majority in principal amount of the Outstanding Debt
Securities of such series represented at the meeting.

            (c) At any meeting each Holder of a Debt Security of such series or
proxy shall be entitled to one vote for each $1,000 principal amount (or the
equivalent in Euros, any other composite currency or a Foreign Currency) of Debt
Securities of such series held or represented by him; provided, however, that no
vote shall be cast or counted at any meeting in respect of any Debt Security
challenged as not Outstanding and ruled by the chairperson of the meeting not to
be Outstanding. The chairperson of the meeting shall have no right to vote,
except as a Holder of a Debt Security of such series or proxy.

            (d) Any meeting of Holders of Debt Securities of any series duly
called pursuant to Section 16.2 at which a quorum is present may be adjourned
from time to time by Persons entitled to vote a majority in principal amount of
the Outstanding Debt Securities of such series represented at the meeting; and
the meeting may be held as so adjourned without further notice.

            SECTION 16.6. Counting Votes and Recording Action of Meetings.

            The vote upon any resolution submitted to any meeting of Holders of
Debt Securities of any series shall be by written ballots on which shall be
subscribed the signatures of the Holders of Debt Securities of such series or of
their representatives by proxy and the principal amounts and serial numbers of
the Outstanding Debt Securities of such series held or represented by them. The
permanent chairperson of the meeting shall appoint two inspectors of votes who
shall count all votes cast at the meeting for or against any resolution and who
shall make and file with the secretary of the meeting their verified written
reports in triplicate of all votes cast at the meeting. A record, at least in
triplicate, of the proceedings of each meeting of Holders of Debt Securities of
any series shall be prepared by the secretary of the meeting and there shall be
attached to said record the original reports of the inspectors of votes on any
vote by ballot taken thereat and affidavits by one or more persons having
knowledge of the facts setting forth a copy of the notice of the meeting and
showing that said notice was given as provided in Section 16.2 and, if
applicable, Section 16.1. Each copy shall be signed and verified by the
affidavits of the permanent chairperson and secretary of the meeting and one
such copy shall be delivered to the Company, and another to the Trustee to be
preserved by the Trustee, the latter to have attached thereto the ballots voted
at the meeting. Any record so signed and verified shall be conclusive evidence
of the matters therein stated.


                                      -88-
<PAGE>   99
                              ARTICLE SEVENTEEN

                                  DEFEASANCE

            SECTION 17.1. Termination of Company's Obligations.

            If this Section 17.1 is specified, as contemplated by Section 3.1,
to be applicable to any series of Debt Securities and if the Company deposits
irrevocably in trust with the Trustee money and/or, to the extent such Debt
Securities are denominated and payable in Dollars only, Eligible Instruments the
payments of principal and interest on which when due (and without reinvestment
and providing no tax liability will be imposed upon the Trustee or the Holders
of such Debt Securities) will provide money in such amounts as will (together
with any money irrevocably deposited in trust with the Trustee, without
investment) be sufficient to pay the principal of (and premium, if any) and any
installment of principal of (and premium, if any) or interest when due on the
Debt Securities of such series and any coupons appertaining thereto and any
mandatory sinking fund, repayment or analogous payments thereon on the scheduled
due dates therefor at the Stated Maturity thereof, the Company's obligations
under any covenant determined pursuant to Section 3.1 to be subject to this
Section shall terminate with respect to the Debt Securities of the series for
which such deposit was made; provided, however, that (i) no Event of Default
with respect to the Debt Securities of such series under Section 5.1(1) or
Section 5.1(2) or event that with notice or lapse of time or both would
constitute such an Event of Default shall have occurred and be continuing on
such date, (ii) such deposit will not result in a breach of, or constitute a
default under, this Indenture or any other agreement or instrument to which the
Company is a party or by which it is bound, and (iii) such termination shall not
relieve the Company of its obligations under the Debt Securities of such series
and this Indenture to pay when due the principal of (and premium, if any) and
interest and additional amounts on such Debt Securities and any coupons
appertaining thereto if such Debt Securities or coupons are not paid (or payment
is not provided for) when due from the money and Eligible Instruments (and the
proceeds thereof) so deposited.

            It shall be a condition to the deposit of cash and/or Eligible
Instruments and the termination of the Company's obligations pursuant to the
provisions of this Section with respect to the Debt Securities of any series
under any covenant determined pursuant to Section 3.1 to be subject to this
Section that the Company deliver to the Trustee (i) an Opinion of Counsel to the
effect that: (a) Holders of Debt Securities of such series and any coupons
appertaining thereto will not recognize income, gain or loss for Federal income
tax purposes as a result of such deposit and termination and (b) such Holders
(and future Holders) will be subject to tax in the same amount, manner and
timing as if such deposit and termination has not occurred, (ii) an Officers'
Certificate to the effect that under the laws in effect on the date such money
and/or Eligible Instruments are deposited with the Trustee, the amount thereof
will be sufficient, after payment of all Federal, state and local taxes in
respect thereof payable by the Trustee, to pay principal (and premium, if any)
and interest when due on the Debt Securities of such series and any coupons
appertaining thereto; and (iii) an Officers' Certificate and an Opinion of
Counsel, each stating that all conditions precedent herein provided for relating
to the defeasance contemplated in this Section have been complied with.


                                      -89-
<PAGE>   100
            It shall be an additional condition to the deposit of cash and/or
Eligible Instruments and the termination of the Company's obligations pursuant
to the provisions of this Section under any covenant determined pursuant to
Section 3.1 to be subject to this Section, with respect to the Debt Securities
of any series then listed on the New York Stock Exchange, that the Company
deliver an Opinion of Counsel that the Debt Securities of such series will not
be delisted from the New York Stock Exchange as a result of such deposit and
termination.

            After a deposit as provided herein, the Trustee shall, upon Company
Request, acknowledge in writing the discharge of the Company's obligations
pursuant to the provisions of this Section with respect to the Debt Securities
of such series under any covenant determined pursuant to Section 3.1 to be
subject to this Section.

            SECTION 17.2. Repayment to Company.

            The Trustee and any Paying Agent shall promptly pay to the Company
upon Company Request any money or Eligible Instruments not required for the
payment of the principal of (and premium, if any) and interest on the Debt
Securities of any series and any related coupons for which money or Eligible
Instruments have been deposited pursuant to Section 17.1 held by them at any
time.

            The Trustee and any Paying Agent shall promptly pay to the Company
upon Company Request any money held by them for the payment of principal (and
premium, if any) and interest that remains unclaimed for two years after the
Maturity of the Debt Securities for which a deposit has been made pursuant to
Section 17.1. After such payment to the Company, the Holders of the Debt
Securities of such series and any related coupons shall thereafter, as unsecured
general creditors, look only to the Company for the payment thereof.

            SECTION 17.3. Indemnity for Eligible Instruments.

            The Company shall pay and shall indemnify the Trustee against any
tax, fee or other charge imposed on or assessed against the deposited Eligible
Instruments or the principal or interest received on such Eligible Instruments.


                               ARTICLE EIGHTEEN

                       SUBORDINATION OF DEBT SECURITIES

            SECTION 18.1. Debt Securities Subordinate to Senior Debt.

            The Company covenants and agrees that anything in this Indenture or
the Debt Securities of any series to the contrary notwithstanding, the
indebtedness evidenced by the Debt Securities of each series and any coupons
appurtenant thereto is subordinate and junior in right of payment to all Senior
Debt to the extent provided herein, and each Holder of Debt Securities of each
series and coupons appurtenant thereto, by such Holder's acceptance thereof,
likewise covenants and agrees to the subordination herein provided and shall be
bound by the provisions


                                      -90-
<PAGE>   101
hereof. Senior Debt shall continue to be Senior Debt and entitled to the
benefits of these subordination provisions irrespective of any amendment,
modification or waiver of any term of the Senior Debt or extension or renewal of
the Senior Debt.

            In the event that the Company shall default in the payment of any
principal of (or premium, if any) or interest on any Senior Debt when the same
become due and payable, whether at maturity or at a date fixed for prepayment or
by declaration of acceleration or otherwise, then, upon written notice of such
default to the Company by the Holders of Senior Debt or any trustee therefor,
unless and until such default shall have been cured or waived or shall have
ceased to exist, no direct or indirect payment (in cash, property, securities,
by set-off or otherwise) shall be made or agreed to be made on account of the
principal of (or premium, if any) or interest on any of the Debt Securities, or
in respect of any redemption, repayment, retirement, purchase or other
acquisition of any of the Debt Securities.

            In the event of

            (a) any insolvency, bankruptcy, receivership, liquidation,
reorganization, readjustment, composition or other similar proceeding relating
to the Company, its creditors or its property,

            (b) any proceeding for the liquidation, dissolution or other winding
up of the Company, voluntary or involuntary, whether or not involving insolvency
or bankruptcy proceedings,

            (c)   any assignment by the Company for the benefit of creditors, or

            (d)   any other marshalling of the assets of the Company,

all Senior Debt (including any interest thereon accruing after the commencement
of any such proceedings) shall first be paid in full before any payment or
distribution, whether in cash, securities or other property, shall be made to
any Holder of any of the Debt Securities or coupons appurtenant thereto on
account thereof. Any payment or distribution, whether in cash, securities or
other property (other than securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment the payment of which is
subordinate, at least to the extent provided in these subordination provisions
with respect to the indebtedness evidenced by the Debt Securities, to the
payment of all Senior Debt at the time outstanding and to any securities issued
in respect thereof under any such plan of reorganization or readjustment), which
would otherwise (but for these subordination provisions) be payable or
deliverable in respect of the Debt Securities of any series or coupons
appurtenant thereto shall be paid or delivered directly to the holders of Senior
Debt in accordance with the priorities then existing among such holders until
all Senior Debt (including any interest thereon accruing after the commencement
of any such proceedings) shall have been paid in full. In the event of any such
proceeding, after payment in full of all sums owing with respect to Senior Debt,
the Holders of the Debt Securities and coupons appurtenant thereto, together
with the holders of any obligations of the Company ranking on a parity with the
Debt Securities, shall be entitled to be paid from the remaining assets of the
Company the amounts at the time due and owing on account of unpaid principal of


                                      -91-
<PAGE>   102
(and premium, if any) and interest on the Debt Securities and such other
obligations before any payment or other distribution, whether in cash, property
or otherwise, shall be made on account of any capital stock or any obligations
of the Company ranking junior to the Debt Securities and such other obligations.

            In the event that, notwithstanding the foregoing, any payment or
distribution of any character or any security, whether in cash, securities or
other property (other than securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment the payment of which is
subordinate, at least to the extent provided in these subordination provisions
with respect to the indebtedness evidenced by the Debt Securities, to the
payment of all Senior Debt at the time outstanding and to any securities issued
in respect thereof under any such plan or reorganization or readjustment), shall
be received by the Trustee or any Holder in contravention of any of the terms
hereof such payment or distribution or security shall be received in trust for
the benefit of, and shall be paid over or delivered and transferred to, the
holders of the Senior Debt at the time outstanding in accordance with the
priorities then existing among such holders for application to the payment of
all Senior Debt remaining unpaid, to the extent necessary to pay all such Senior
Debt in full. In the event of the failure of the Trustee or any Holder to
endorse or assign any such payment, distribution or security, each holder of
Senior Debt is hereby irrevocably authorized to endorse or assign the same.

            No present or future holder of any Senior Debt shall be prejudiced
in the right to enforce subordination of the indebtedness evidenced by the Debt
Securities by any act or failure to act on the part of the Company. Nothing
contained herein shall impair, as between the Company and the Holders of Debt
Securities of each series, the obligation of the Company to pay to such Holders
the principal of (and premium, if any) and interest on such Debt Securities and
coupons appurtenant thereto or prevent the Trustee or the Holder from exercising
all rights, powers and remedies otherwise permitted by applicable law or
hereunder upon a default or Event of Default hereunder, all subject to the
rights of the holders of the Senior Debt to receive cash, securities or other
property otherwise payable or deliverable to the Holders.

            Senior Debt shall not be deemed to have been paid in full unless the
holders thereof shall have received cash, securities or other property equal to
the amount of such Senior Debt then outstanding. Upon the payment in full of all
Senior Debt, the Holders of Debt Securities of each series and coupons
appurtenant thereto, if any, shall be subrogated to all rights of any holders of
Senior Debt to receive any further payments or distributions applicable to the
Senior Debt until the indebtedness evidenced by the Debt Securities of such
series and coupons appertaining thereto, if any, shall have been paid in full,
and such payments or distributions received by such Holders, by reason of such
subrogation, of cash, securities or other property which otherwise would be paid
or distributed to the holders of Senior Debt shall, as between the Company and
its creditors other than the holders of Senior Debt, on the one hand, and such
Holders, on the other hand, be deemed to be a payment by the Company on account
of Senior Debt, and not on account of the Debt Securities of such series.


                                      -92-
<PAGE>   103
            The provisions of this Section 18.1 shall not impair any rights,
interests, remedies or powers of any secured creditor of the Company in respect
of any security interest the creation of which is not prohibited by the
provisions of this Indenture.

            The securing of any obligations of the Company, otherwise ranking on
a parity with the Debt Securities or ranking junior to the Debt Securities,
shall not be deemed to prevent such obligations from constituting, respectively,
obligations ranking on a parity with the Debt Securities or ranking junior to
the Debt Securities.

            SECTION 18.2. Trustee and Holders of Debt Securities May Rely on
Certificate of Liquidating Agent; Trustee May Require Further Evidence as to
Ownership of Senior Debt; Trustee Not Fiduciary to Holders of Senior Debt.

            Upon any payment or distribution of assets of the Company referred
to in this Article Eighteen, the Trustee and the Holders shall be entitled to
rely upon an order or decree made by any court of competent jurisdiction in
which such dissolution or winding up or liquidation or reorganization or
arrangement proceedings are pending or upon a certificate of the trustee in
bankruptcy, receiver, assignee for the benefit of creditors or other Person
making such payment or distribution, delivered to the Trustee or to the Holders,
for the purpose of ascertaining the persons entitled to participate in such
distribution, the holders of the Senior Debt and other indebtedness of the
Company, the amount thereof or payable thereon, the amount or amounts paid or
distributed thereon and all other facts pertinent thereto or to this Article
Eighteen. In the absence of any such bankruptcy trustee, receiver, assignee or
other Person, the Trustee shall be entitled to rely upon a written notice by a
Person representing himself or herself to be a holder of Senior Debt (or a
trustee or representative on behalf of such holder) as evidence that such Person
is a holder of such Senior Debt (or is such a trustee or representative). In the
event that the Trustee determines, in good faith, that further evidence is
required with respect to the right of any Person as a holder of Senior Debt to
participate in any payments or distributions pursuant to this Article Eighteen,
the Trustee may request such person to furnish evidence to the reasonable
satisfaction of the Trustee as to the amount of Senior Debt held by such Person,
as to the extent to which such Person is entitled to participate in such payment
or distribution, and as to other facts pertinent to the rights of such Person
under this Article Eighteen, and if such evidence is not furnished, the Trustee
may offer any payment to such Person pending judicial determination as to the
right of such Person to receive payment. The Trustee, however, shall not be
deemed to owe any fiduciary duty to the holders of Senior Debt.

            SECTION 18.3. Payment Permitted if No Default.

            Nothing contained in this Article Eighteen or elsewhere in this
Indenture, or in any of the Debt Securities, shall prevent (a) the Company at
any time, except during the pendency of any dissolution, winding up, liquidation
or reorganization proceedings referred to in, or under the conditions described
in, Section 18.1, from making payments of the principal of (or premium, if any)
or interest on the Debt Securities or (b) the application by the Trustee or any
Paying Agent of any moneys deposited with it hereunder to payments of the
principal of or interest on the Debt Securities, if, at the time of such
deposit, the Trustee or such Paying Agent,


                                      -93-
<PAGE>   104
as the case may be, did not have the written notice provided for in Section 18.4
of any event prohibiting the making of such deposit, or if, at the time of such
deposit (whether or not in trust) by the Company with the Trustee or any Paying
Agent (other than the Company) such payment would not have been prohibited by
the provisions of this Article, and the Trustee or any Paying Agent shall not be
affected by any notice to the contrary received by it on or after such date.

            SECTION 18.4. Trustee Not Charged with Knowledge of Prohibition.

            Anything in this Article Eighteen or elsewhere in this Indenture
contained to the contrary notwithstanding, the Trustee shall not at any time be
charged with knowledge of the existence of any facts which would prohibit the
making of any payment of money to or by the Trustee and shall be entitled
conclusively to assume that no such facts exist and that no event specified in
Section 18.1 has happened, until the Trustee shall have received an Officers'
Certificate to that effect or notice in writing to that effect signed by or on
behalf of the holder or holders, or their representatives, of Senior Debt who
shall have been certified by the Company or otherwise established to the
reasonable satisfaction of the Trustee to be such holder or holders or
representatives or from any trustee under any indenture pursuant to which such
Senior Debt shall be outstanding. The Company shall give prompt written notice
to the Trustee and to the Paying Agent of any facts which would prohibit the
payment of money to or by the Trustee or any Paying Agent.

            SECTION 18.5. Trustee to Effectuate Subordination.

            Each Holder of Debt Securities or coupons by such Holder's
acceptance thereof authorizes and directs the Trustee in such Holder's behalf to
take such action as may be necessary or appropriate to effectuate the
subordination as between such Holder and holders of Senior Debt as provided in
this Article and appoints the Trustee its attorney-in-fact for any and all such
purposes.

            SECTION 18.6. Rights of Trustee as Holder of Senior Debt.

            The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article with respect to any Senior Debt which may at
the time be held by it, to the same extent as any other holder of Senior Debt
and nothing in this Article shall deprive the Trustee of any rights as such
holder; provided that nothing in this Article shall apply to claims of, or
payments to, the Trustee under or pursuant to Section 6.7.

            SECTION 18.7. Article Applicable to Paying Agents.

            In case at any time any Paying Agent other than the Trustee shall
have been appointed by the Company and be then acting hereunder, the term
"Trustee" as used in this Article shall in such case (unless the context shall
otherwise require) be construed as extending to and including such Paying Agent
within its meaning as fully for all intents and purposes as if the Paying Agent
were named in this Article in addition to or in place of the Trustee, provided,
however, that Sections 18.4 and 18.6 shall not apply to the Company or any
Affiliate of the Company if the Company or such Affiliate acts as Paying Agent.


                                      -94-
<PAGE>   105
            SECTION 18.8. Subordination Rights Not Impaired by Acts or Omissions
of the Company or Holders of Senior Debt.

            No right of any present or future holders of any Senior Debt to
enforce subordination as herein provided shall at any time in any way be
prejudiced or impaired by any act or failure to act on the part of the Company
or by any act or failure to act, in good faith, by any such holder, or by any
noncompliance by the Company with the terms, provisions and covenants of this
Indenture, regardless of any knowledge thereof which any such holder may have or
be otherwise charged with. The holders of Senior Debt may, at any time or from
time to time and in their absolute discretion, change the manner, place or terms
of payment, change or extend the time of payment of, or renew or alter, any such
Senior Debt, or amend or supplement any instrument pursuant to which any such
Senior Debt is issued or by which it may be secured, or release any security
therefor, or exercise or refrain from exercising any other of their rights under
the Senior Debt including, without limitation, the waiver of default thereunder,
all without notice to or assent from the Holders of the Debt Securities or the
Trustee and without affecting the obligations of the Company, the Trustee or the
Holders of the Debt Securities under this Article.

                               ARTICLE NINETEEN

                     CONVERSION OF CONVERTIBLE SECURITIES

            SECTION 19.1. Applicability of Article.

            If an Officers' Certificate or supplemental indenture pursuant to
Section 3.1 provides that the Debt Securities of a series shall be Convertible
Securities, Debt Securities of such series shall be convertible in accordance
with their terms and (except as otherwise specified in such Officers'
Certificate or supplemental indenture) in accordance with this Article.

            SECTION 19.2. Right to Convert.

            Subject to and upon compliance with the provisions of this Article,
the Holder of any Convertible Security shall have the right, at such Holder's
option, at any time prior to the close of business on the date set forth in the
Officers' Certificate delivered pursuant to Section 3.1 hereof (or if such
Convertible Security is called for redemption or submitted for repayment, then
in respect of such Convertible Security to and including but not after the close
of business on the Redemption or Repayment Date, as the case may be, unless the
Company shall default in the payment due) to convert the principal amount of any
such Convertible Security, or, in the case of any Convertible Security of a
denomination greater than $1,000, any portion of such principal which is $1,000
or an integral multiple thereof, into that number of fully paid and
nonassessable shares of Common Stock (as such shares shall then be constituted)
obtained by dividing the principal amount of the Convertible Security or portion
thereof surrendered for conversion by the Conversion Price, by surrender of the
Convertible Security so to be converted in whole or in part in the manner
provided in Section 19.3. Such conversion shall be effected by the Company.


                                      -95-
<PAGE>   106
            SECTION 19.3. Exercise of Conversion Privilege; Delivery of Common
Stock on Conversion; No Adjustment for Interest or Dividends.

            In order to exercise the conversion privilege, the Holder of any
Convertible Security to be converted in whole or in part shall surrender such
Convertible Security at an office or agency maintained by the Company pursuant
to Section 10.2, accompanied by the funds, if any, required by the last
paragraph of this Section, together with written notice of conversion, in the
form provided on the Convertible Securities, that the Holder elects to convert
such Convertible Security or the portion thereof specified in said notice. Such
notice shall also state the name or names (with address) in which the
certificate or certificates for shares of Common Stock which shall be
deliverable on such conversion shall be registered, and shall be accompanied by
transfer taxes, if required pursuant to Section 19.8. Each Convertible Security
surrendered for conversion shall, unless the shares deliverable on conversion
are to be registered in the same name as the registration of such Convertible
Security, be duly endorsed by, or accompanied by instruments of transfer in form
satisfactory to the Company duly executed by, the Holder or such Holder's duly
authorized attorney.

            As promptly as practicable after the surrender of such Convertible
Security and the receipt of such notice and funds, if any, as aforesaid, the
Company shall deliver at such office or agency to such Holder, or on such
Holder's written order, a certificate or certificates for the number of full
shares deliverable upon the conversion of such Convertible Security or portion
thereof in accordance with the provisions of this Article and a check or cash in
respect of any fractional interest in respect of a share of Common Stock arising
upon such conversion as provided in Section 19.4. In case any Convertible
Security of a denomination greater than the minimum denomination shall be
surrendered for partial conversion and subject to Section 3.2, the Company shall
execute and the Trustee shall authenticate and deliver to or upon the written
order of the Holder of the Convertible Security so surrendered, without charge
to such Holder, a new Convertible Security or Convertible Securities in
authorized denominations in an aggregate principal amount equal to the
unconverted portion of the surrendered Convertible Security.

            Each conversion shall be deemed to have been effected on the date on
which such Convertible Security shall have been surrendered (accompanied by the
funds, if any, required by the last paragraph of this Section) and such notice
shall have been received by the Company, as aforesaid, and the person in whose
name any certificate or certificates for shares of Common Stock shall be
registrable upon such conversion shall be deemed to have become on said date the
holder of record of the shares represented thereby; provided, however, that any
such surrender on any date when the stock transfer books of the Company shall be
closed shall constitute the person in whose name the certificates are to be
registered as the record holder thereof for all purposes on the next succeeding
day on which stock transfer books are open, but such conversion shall be at the
Conversion Price in effect on the date upon which such Convertible Security
shall have been surrendered.

            Any Convertible Security or portion thereof surrendered for
conversion during the period from the close of business on the Regular Record
Date for any Interest Payment Date to the opening of business on such Interest
Payment Date shall (unless such Convertible Security or


                                      -96-
<PAGE>   107
portion thereof being converted shall have been called for redemption or
submitted for repayment on a date in such period) be accompanied by payment, in
legal tender or other funds acceptable to the Company, of an amount equal to the
interest otherwise payable on such Interest Payment Date on the principal amount
being converted; provided, however, that no such payment need be made if there
shall exist at the time of conversion a default in the payment of interest on
the Convertible Securities. An amount equal to such payment shall be paid by the
Company on such Interest Payment Date to the Holder of such Convertible Security
on such Regular Record Date, provided, however, that if the Company shall
default in the payment of interest on such Interest Payment Date, such amount
shall be paid to the person who made such required payment. Except as provided
above in this Section, no adjustment shall be made for interest accrued on any
Convertible Security converted or for dividends on any shares issued upon the
conversion of such Convertible Security as provided in this Article.

            SECTION 19.4. Cash Payments in Lieu of Fractional Shares.

            No fractional shares of Common Stock or scrip representing
fractional shares shall be delivered upon conversion of Convertible Securities.
If more than one Convertible Security shall be surrendered for conversion at one
time by the same Holder, the number of full shares which shall be deliverable
upon conversion shall be computed on the basis of the aggregate principal amount
of the Convertible Securities (or specified portions thereof to the extent
permitted hereby) so surrendered. If any fractional share of stock would be
deliverable upon the conversion of any Convertible Security or Convertible
Securities, the Company shall make an adjustment therefor in cash at the current
market value of such fractional share of stock. The market value of a share of
Common Stock shall be the Closing Price on the Business Day immediately
preceding the day on which the Convertible Securities (or specified portions
thereof) are deemed to have been converted.

            SECTION 19.5. Conversion Price.

            The Conversion Price shall be as specified in the form of
Convertible Security hereinabove set forth, subject to adjustment as provided in
this Article.

            SECTION 19.6. Adjustment to Conversion Price.

            The Conversion Price shall be adjusted from time to time as follows:

            (a) In case the Company shall (i) pay a dividend or make a
distribution on the Common Stock in shares of its capital stock (whether shares
of Common Stock or of capital stock of any other class), (ii) subdivide or
reclassify its outstanding Common Stock into a greater number of securities
(including Common Stock), or (iii) combine or reclassify its outstanding Common
Stock into a smaller number of securities (including Common Stock), the
Conversion Price in effect immediately prior thereto shall be adjusted so that
the Holder of any Convertible Security thereafter surrendered for conversion
shall be entitled to receive the number of shares of capital stock of the
Company which such Holder would have owned or have been entitled to receive
after the happening of any of the events described above had such Convertible
Security been converted immediately prior to the happening of such event. An
adjustment made pursuant


                                      -97-
<PAGE>   108
to this subsection (a) shall become effective immediately after the record date
in the case of a dividend and shall become effective immediately after the
effective date in the case of a subdivision or combination. If, as a result of
an adjustment made pursuant to this subsection (a), the Holder of any
Convertible Security thereafter surrendered for conversion shall become entitled
to receive shares of two or more classes of capital stock of the Company, the
Board of Directors of the Company (whose determination shall be conclusive and
shall be described in a written statement filed with the Trustee and any
conversion agent) shall determine the allocation of the adjusted Conversion
Price between or among shares of such classes of capital stock.

            In the event that at any time, as a result of an adjustment made
pursuant to this subsection (a) of this Section 19.6, the Holder of any
Convertible Security thereafter converted shall become entitled to receive any
shares or other securities of the Company other than shares of Common Stock,
thereafter the number of such other shares so received upon conversion of any
Convertible Security shall be subject to adjustment from time to time in a
manner and on terms as nearly equivalent as practicable to the provisions with
respect to the shares of Common Stock contained in this Section 19.6, and other
provisions of this Article Nineteen with respect to the shares of Common Stock
shall apply on like terms to any such other shares or other securities.

            (b) In case the Company shall fix a record date for the issuance of
rights or warrants to all holders of its Common Stock (or securities convertible
into Common Stock) entitling them (for a period expiring within 45 days after
such record date) to subscribe for or purchase Common Stock at a price per share
(or a conversion price per share) less than the current market price per share
of Common Stock (as defined in subsection (d) below) at such record date, the
Conversion Price in effect immediately prior thereto shall be adjusted so that
the same shall equal the price determined by multiplying the Conversion Price in
effect immediately prior to such record date by a fraction of which the
numerator shall be the number of shares of Common Stock outstanding on such
record date plus the number of shares which the aggregate offering price of the
total number of shares so offered (or the aggregate initial conversion price of
the convertible securities so offered) would purchase at such current market
price, and of which the denominator shall be the number of shares of Common
Stock outstanding on such record date plus the number of additional shares of
Common Stock offered for subscription or purchase (or into which the convertible
securities so offered are initially convertible). Such adjustment shall be made
successively whenever such a record date is fixed, and shall become effective
immediately after such record date. In determining whether any rights or
warrants entitle the holders to subscribe for or purchase shares of Common Stock
at less than such current market price, and in determining the aggregate
offering price of such shares, there shall be taken into account any
consideration received by the Company for such rights or warrants, the value of
such consideration, if other than cash, to be determined by the Board of
Directors of the Company. Common Stock owned by or held for the account of the
Company or any majority owned subsidiary shall not be deemed outstanding for the
purpose of any adjustment required under this subsection (b).

            (c) In case the Company shall fix a record date for making a
distribution to all holders of its Common Stock evidences of its indebtedness or
assets (excluding regular quarterly or other periodic or recurring cash
dividends or distributions and cash dividends or distributions


                                      -98-
<PAGE>   109
paid from retained earnings of the Company or dividends or distributions
referred to in subsection (a) above) or rights or warrants to subscribe or
purchase (excluding those referred to in subsection (b) above), then in each
such case the Conversion Price shall be adjusted so that the same shall equal
the price determined by multiplying the Conversion Price in effect immediately
prior to such record date by a fraction of which the numerator shall be the
current market price per share (as defined in subsection (d) below) of the
Common Stock on such record date less the then fair market value (as determined
by the Board of Directors of the Company whose determination shall be
conclusive, and described in a certificate filed with the Trustee) of the
portion of the assets or evidences of indebtedness so distributed or of such
rights or warrants applicable to one share of Common Stock, and the denominator
shall be the current market price per share (as defined in subsection (d) below)
of the Common Stock. Such adjustment shall be made successively whenever such a
record date is fixed and shall become effective immediately after such record
date. Notwithstanding the foregoing, in the event that the Company shall
distribute any rights or warrants to acquire capital stock ("Rights") pursuant
to this subsection (c), the distribution of separate certificates representing
such Rights subsequent to their initial distribution (whether or not such
distribution shall have occurred prior to the date of the issuance of such
Convertible Securities) shall be deemed to be the distribution of such Rights
for purposes of this subsection (c); provided that the Company may, in lieu of
making any adjustment pursuant to this subsection (c) upon a distribution of
separate certificates representing such Rights, make proper provision so that
each Holder of such Convertible Security who converts such Convertible Security
(or any portion thereof) (i) before the record date for such distribution of
separate certificates shall be entitled to receive upon such conversion shares
of Common Stock issued with Rights and (ii) after such record date and prior to
the expiration, redemption or termination of such Rights shall be entitled to
receive upon such conversion, in addition to the shares of Common Stock issuable
upon such conversion, the same number of such Rights as would a holder of the
number of shares of Common Stock that such Convertible Security so converted
would have entitled the holder thereof to purchase in accordance with the terms
and provisions of and applicable to the Rights if such Convertible Security were
converted immediately prior to the record date for such distribution. Common
Stock owned by or held for the account of the Company or any majority owned
subsidiary shall not be deemed outstanding for the purpose of any adjustment
required under this subsection (c).

            (d) For the purpose of any computation under subsection (b) and (c)
above, the current market price per share of Common Stock at any date shall be
deemed to be the average of the daily Closing Prices for the thirty consecutive
days (which are not legal holidays as defined in Section 1.13) commencing
forty-five days (which are not legal holidays as defined in Section 1.13) before
the day in question. The Closing Price for any day shall be (i) if the Common
Stock is listed or admitted for trading on any national securities exchange, the
last sale price (regular way), or the average of the closing bid and ask prices
if no sale occurred, of Common Stock on the principal securities exchange on
which the Common Stock is listed, or, if not listed or admitted to trading on
any national securities exchange, on the National Market System of the National
Association of Securities Dealers, Inc. Automated Quotations System ("NASDAQ"),
(ii) if not listed or quoted as described in (i), the mean between the closing
high bid and low asked quotations of Common Stock reported by NASDAQ, or any
similar system or automated dissemination of quotations of securities prices
then in common use, if so quoted, or (iii) if not


                                      -99-
<PAGE>   110
quoted as described in clause (ii), the mean between the high bid and low asked
quotations for Common Stock as reported by the National Quotation Bureau
Incorporated if at least two securities dealers have inserted both bid and asked
quotations for Common Stock on at least 5 of the 10 preceding days. If none of
the conditions set forth above is met, the Closing Price of Common Stock on any
day or the average of such Closing Prices for any period shall be the fair
market value of Common Stock as determined by a member firm of the New York
Stock Exchange, Inc. selected by the Company.

            (e) (i) Nothing contained herein shall be construed to require an
adjustment in the Conversion Price as a result of the issuance of Common Stock
pursuant to, or the granting or exercise of any rights under, the Firstar
Corporation Dividend Reinvestment and Optional Cash Payment Plan.

            (ii) In addition, no adjustment in the Conversion Price shall be
      required unless such adjustment would require an increase or decrease of
      at least 1% in such price; provided, however, that any adjustments which
      by reason of this subsection (e)(ii) are not required to be made shall be
      carried forward and taken into account in any subsequent adjustment,
      further provided, however, that any adjustments which by reason of this
      subsection (e)(ii) are not otherwise required to be made shall be made no
      later than 3 years after the date on which occurs an event that requires
      an adjustment to be made or carried forward.

            (iii) All calculations under this Article Nineteen shall be made to
      the nearest cent or to the nearest one-hundredth of a share, as the case
      may be. Anything in this Section 19.6 to the contrary notwithstanding, the
      Company shall be entitled to make such reductions in the Conversion Price,
      in addition to those required by this Section 19.6, as it in its
      discretion shall determine to be advisable in order that any stock
      dividends, subdivision of shares, distribution of rights to purchase stock
      or securities, or distribution of securities convertible into or
      exchangeable for stock hereafter made by the Company to its shareholders
      shall not be taxable.

            (f) Whenever the Conversion Price is adjusted, as herein provided,
the Company shall promptly file with the Trustee and any conversion agent other
than the Trustee an Officers' Certificate setting forth the Conversion Price
after such adjustment and setting forth a brief statement of the facts requiring
such adjustment. Promptly after delivery of such certificate, the Company shall
prepare a notice of such adjustment of the Conversion Price setting forth the
adjusted Conversion Price and the date on which such adjustment becomes
effective and shall mail such notice of such adjustment of the Conversion Price
to the Holder of each Convertible Security at such Holder's last address
appearing on the Security Register provided for in Section 3.5 of this
Indenture.

            (g) In any case in which this Section 19.6 provides that an
adjustment shall become effective immediately after a record date for an event,
the Company may defer until the occurrence of such event (i) delivering to the
Holder of any Convertible Security converted after such record date and before
the occurrence of such event the additional shares of Common Stock


                                     -100-
<PAGE>   111
deliverable upon such conversion by reason of the adjustment required by such
event over and above the Common Stock deliverable upon such conversion before
giving effect to such adjustment and (ii) paying to such Holder any amount in
cash in lieu of any fraction pursuant to Section 19.4, provided, however, that
the Company shall deliver to such Holder a due bill or other appropriate
instrument evidencing such Holder's rights to receive such additional shares,
and such cash, upon the occurrence of the event requiring such adjustment. If
such event does not occur, no adjustments shall be made pursuant to this Section
19.6.

            SECTION 19.7. Effect of Reclassification, Consolidation, Merger or
Sale.

            If any of the following events occur, namely (i) any
reclassification or change of outstanding shares of Common Stock deliverable
upon conversion of the Convertible Securities (other than a change in par value,
or from par value to no par value, or from no par value to par value, or as a
result of a subdivision or combination, but including any change in the shares
of Common Stock into two or more classes or series of securities), (ii) any
consolidation or merger to which the Company is a party (other than a
consolidation or merger in which the Company is the continuing corporation and
which does not result in any reclassification of, or change (other than a change
in par value, or from par value to no par value, or from no par value to par
value, or as a result of a subdivision or combination) in, outstanding shares of
its Common Stock) or (iii) any sale or conveyance of the properties and assets
of the Company as, or substantially as, an entirety to any other corporation;
then the Company, or such successor or purchasing corporation, as the case may
be, shall execute with the Trustee a supplemental indenture (which shall conform
to the Trust Indenture Act as in force at the date of execution of such
supplemental indenture and comply with the provisions of Article Nine) providing
that each Convertible Security shall be convertible into the kind and amount of
shares of stock and other securities or property, including cash, receivable
upon such reclassification, change, consolidation, merger, sale or conveyance by
a holder of a number of shares of Common Stock deliverable upon conversion of
such Convertible Securities immediately prior to such reclassification, change,
consolidation, merger, sale or conveyance. Such supplemental indenture shall
provide for adjustments which shall be as nearly equivalent as may be
practicable to the adjustments provided for in this Article. The Company shall
cause notice of the execution of such supplemental indenture to be mailed to
each holder of Convertible Securities, at his address appearing on the Security
Register provided for in Section 3.5 of this Indenture.

            The above provisions of this Section shall similarly apply to
successive reclassifications, consolidations, mergers and sales.

            SECTION 19.8. Taxes on Shares Issued.

            The delivery of stock certificates on conversions of Convertible
Securities shall be made without charge to the Holder converting a Convertible
Security for any tax in respect of the issue thereof. The Company shall not,
however, be required to pay any tax which may be payable in respect of any
transfer involved in the delivery of stock registered in any name other than of
the Holder of any Convertible Security converted, and the Company shall not be
required to deliver any such stock certificate unless and until the person or
persons requesting the delivery


                                     -101-
<PAGE>   112
thereof shall have paid to the Company the amount of such tax or shall have
established to the satisfaction of the Company that such tax has been paid.

            SECTION 19.9. Shares to be Fully Paid; Compliance with Governmental
Requirements; Listing of Common Stock.

            The Company covenants that all shares of Common Stock which may be
delivered upon conversion of Convertible Securities will upon delivery be fully
paid and nonassessable by the Company and free from all taxes, liens and charges
with respect to the issue thereof.

            The Company covenants that if any shares of Common Stock to be
provided for the purpose of conversion of Convertible Securities hereunder
require registration with or approval of any governmental authority under any
Federal or state law before such shares may be validly delivered upon
conversion, the Company will in good faith and as expeditiously as possible
endeavor to secure such registration or approval, as the case may be.

            The Company further covenants that it will, if permitted by the
rules of the New York Stock Exchange, list and keep listed for so long as the
Common Stock shall be so listed on such exchange, upon official notice of
issuance, all Common Stock deliverable upon conversion of the Convertible
Securities.

            SECTION 19.10. Responsibility of Trustee.

            Neither Trustee nor any authenticating agent nor any conversion
agent shall at any time be under any duty or responsibility to any Holder of
Convertible Securities to determine whether any facts exist which may require
any adjustment of the Conversion Price, or with respect to the nature or extent
of any such adjustment when made, or with respect to the method employed, or
herein or in any supplemental indenture provided to be employed, in making the
same. Neither the Trustee nor any authenticating agent nor any conversion agent
shall be accountable with respect to the validity or value (or the kind or
amount) of any shares of Common Stock, or of any securities or property, which
may at any time be delivered upon the conversion of any Convertible Security,
and neither the Trustee nor any authenticating agent nor any conversion agent
makes any representation with respect thereto. Subject to the provisions of
Section 6.1, neither the Trustee nor any authenticating agent nor any conversion
agent shall be responsible for any failure of the Company to deliver any shares
of Common Stock or stock certificates or other securities or property or cash
upon the surrender of any Convertible Security for the purpose of conversion or
for any failure of the Company to comply with any of the covenants of the
Company contained in this Article.

            SECTION 19.11. Notice to Holders Prior to Certain Actions.

            In case:

            (a) the Company shall declare a dividend (or any other distribution)
on the Common Stock (other than in cash out of its current or retained
earnings); or


                                     -102-
<PAGE>   113
            (b) the Company shall authorize the granting to the holders of the
Common Stock of rights or warrants to subscribe for or purchase any share of any
class or any other rights or warrants; or

            (c) of any reclassification or change of the Common Stock (other
than a subdivision or combination of its outstanding Common Stock, or a change
in par value, or from par value to no par value, or from no par value to par
value) or of any consolidation or merger to which the Company is a party and for
which approval of any stockholders of the Corporation is required or of the sale
or transfer of all or substantially all of the assets of the Company; or

            (d) of the voluntary or involuntary dissolution, liquidation or
winding up of the Company;

the Company shall cause to be filed with the Trustee and the Company shall cause
to be mailed to each holder of Convertible Securities at his address appearing
on the Security Register, provided for in Section 3.5 of this Indenture, as
promptly as possible but in any event no less than fifteen days prior to the
applicable date hereinafter specified, a notice stating (x) the date on which a
record is to be taken for the purpose of such dividend, distribution, rights or
warrants, or, if a record is not to be taken, the date as of which the holders
of Common Stock of record to be entitled to such dividend, distribution, rights
or warrants are to be determined, or (y) the date on which such
reclassification, consolidation, merger, sale, transfer, dissolution,
liquidation or winding up is expected to become effective, and the date as of
which it is expected that holders of Common Stock of record shall be entitled to
exchange their Common Stock for securities or other property deliverable upon
such reclassification, consolidation, merger, sale, transfer, dissolution,
liquidation or winding up. Failure to give such notice, or any defect therein,
shall not affect the legality or validity of such dividend, distribution,
reclassification, consolidation, merger, sale, transfer, dissolution,
liquidation or winding up or any adjustment in the Conversion Price required by
this Article Nineteen.

            SECTION 19.12. Covenant to Reserve Shares.

            The Company covenants that it will at all times reserve and keep
available, free from pre-emptive rights, out of its authorized but unissued
Common Stock, such number of shares of Common Stock as shall then be deliverable
upon the conversion of all outstanding Convertible Securities.


                                     -103-
<PAGE>   114
            IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.

                                    FIRSTAR CORPORATION

                                    By_____________________________________
                                       Name:

                                    Its_____________________________________


[CORPORATE SEAL]

Attest:


_____________________________
                    Secretary


                                    _______________________________________
                                    AS TRUSTEE

                                    By_____________________________________
                                      Name:

                                    Its


[CORPORATE SEAL]

Attest:


______________________________
Authorized Signatory


                                     -104-
<PAGE>   115
STATE OF WISCONSIN      )
                        ) SS.
COUNTY OF               )

            On the __________ day of __________, __________, before me
personally came ________________, to me known, who, being duly sworn, did depose
and say that he resides at ________________________ ; that he is a
___________________________ of Firstar Corporation, a corporation described in
and which executed the above instrument; that he knows the seal of said
corporation; that it was so affixed pursuant to the authority of the Board of
Directors of said corporation; and that he signed his name thereto pursuant to
like authority.

                                    _________________________________
                                    Notary Public


_________________________________      )
                                       ) SS.
_________________________________      )

            On the __________ day of _________ 1999, before me personally came
_______, to me known, who, being duly sworn, did depose and say that she resides
at ______________; that she is a Vice President of "____________", a national
banking association described in and which executed the above instrument; that
she knows the seal of said corporation; that it was so affixed pursuant to the
authority of the Board of Directors of said corporation; and that she signed her
name thereto pursuant to like authority.

                                    _________________________________
                                    Notary Public


                                     -105-
<PAGE>   116
                                                                     EXHIBIT A-1

          [Form of Certificate of Beneficial Ownership by a Non-United
                   States Person or by Certain Other Persons]

                                   Certificate

                               FIRSTAR CORPORATION

                     [Insert title or sufficient description
                       of Debt Securities to be delivered]

            Reference is hereby made to the Indenture dated as of ________, 1999
(the "Indenture") between Firstar Corporation and "____________", as trustee
(the "Trustee"), covering the above-captioned Debt Securities. This is to
certify that as of the date hereof, __________ principal amount of Debt
Securities credited to you for our account (i) is owned by persons that are not
United States Persons, as defined below; (ii) is owned by United States Persons
that are (a) foreign branches of United States financial institutions (as
defined in U.S. Treasury Regulations Section 1.165-12(c)(1)(v)) ("financial
institutions") purchasing for their own account or for resale, or (b) United
States Persons who acquired the Debt Securities through foreign branches of
United States financial institutions and who hold the Debt Securities through
such United States financial institutions on the date hereof (and in either case
(a) or (b), each such United States financial institution encloses herewith a
certificate in the form of Exhibit A-2 to the Indenture); or (iii) is owned by
United States or foreign financial institutions for purposes of resale during
the restricted period (as defined in U.S. Treasury Regulations Section 1.163-
5(c)(2)(i)(D)(7)), which United States or foreign financial institutions
described in clause (iii) above (whether or not also described in clause (i) or
(ii)) certify that they have not acquired the Debt Securities for purposes of
resale directly or indirectly to a United States Person or to a person within
the United States or its possessions.

            [Insert if certificate does not relate to an interest payment--We
undertake to advise you by tested telex followed by written confirmation if the
above statement as to beneficial ownership is not correct on the date of
delivery of the above-captioned Debt Securities in bearer form as to all of such
Debt Securities with respect to such of said Debt Securities as then appear in
your books as being held for our account.] We understand that this certificate
is required in connection with United States tax laws. We irrevocably authorize
you to produce this certificate or a copy hereof to any interested party in any
administrative or legal proceedings with respect to the matters covered by this
certificate. "United States Person" shall mean a citizen or resident of the
United States of America (including the District of Columbia), a corporation,
partnership or other entity created or organized in or under the laws of the
United States or any political subdivision thereof or an estate or trust that is
subject to United States Federal income taxation regardless of the source of its
income.

            [This certificate excepts and does not relate to __________
principal amount of Debt Securities credited to you for our account and to which
we are not now able to make the certification set forth above. We understand
that definitive Debt Securities cannot be delivered


                                     -106-
<PAGE>   117
and interest cannot be paid until we are able to so certify with respect to such
principal amount of Debt Securities.]*

Dated:____________________

[To be dated on or after
______________ (the date
determined as provided in the
Indenture)]

                            [Name of Person Entitled to Receive Bearer Security]


                            ________________________________________
                                    (Authorized Signatory)


                            Name:__________________________________

                            Title:___________________________________


__________
*  Delete if inappropriate


                                     -107-
<PAGE>   118
                                                                     EXHIBIT A-2

                       [Form of Certificate of Status as a
            Foreign Branch of a United States Financial Institution]

                                   Certificate

                               FIRSTAR CORPORATION

                   [Insert title or sufficient description of
                        Debt Securities to be delivered]

            Reference is hereby made to the Indenture dated as of _________,
1999 (the "Indenture"), between Firstar Corporation and "____________", as
trustee, relating to the offering of the above-captioned Debt Securities (the
"Debt Securities"). Unless herein defined, terms used herein have the same
meaning as given to them in the Indenture.

            The undersigned represents that it is a branch located outside the
United States of a United States securities clearing organization, bank or other
financial institution (as defined in U.S. Treasury Regulation Section
1.165-12(c)(1)(v)) that holds customers' securities in the ordinary course of
its trade or business and agrees, and authorizes you to advise the issuer or the
issuer's agent, that it will comply with the requirements of Section
165(j)(3)(A), (B) or (C) of the Internal Revenue Code of 1986 and the
regulations thereunder and is not purchasing for resale directly or indirectly
to a United States Person or to a person within the United States or its
possessions. We undertake to advise you by tested telex followed by written
confirmation if the statement in the immediately preceding sentence is not
correct on the date of delivery of the above-captioned Debt Securities in bearer
form.

            We understand that this certificate is required in connection with
the United States tax laws. We irrevocably authorize you to produce this
certificate or a copy hereof to any interested party in any administrative or
legal proceedings with respect to the matters covered by this certificate.

Dated:____________________
[To be dated on or after
_____________ (the
date determined as provided
in the Indenture)]


                            [Name of Person Entitled to Receive Bearer Security]



                             ______________________________________
                                    (Authorized Signatory)


                             Name:________________________________

                             Title:_________________________________


                                     -108-
<PAGE>   119
                                                                       EXHIBIT B

                  [Form of Certificate to be Given by Euroclear
                and Cedel S.A. in Connection with the Exchange of
                     All or a Portion of a Temporary Global
                Security or to Obtain Interest Prior to Exchange]

                                   Certificate

                               FIRSTAR CORPORATION

                     [Insert title or sufficient description
                       of Debt Securities to be delivered]

            We refer to that portion, ___________, of the Global Security
representing the above-captioned issue [which is herewith submitted to be
exchanged for definitive Debt Securities]* [for which we are seeking to obtain
payment of interest]* (the "Submitted Portion"). This is to certify, pursuant to
the Indenture dated as of __________, 1999 (the "Indenture") between Firstar
Corporation and "____________", as trustee (the "Trustee"), that we have
received in writing, by tested telex or by electronic transmission from member
organizations with respect to each of the persons appearing in our records as
being entitled to a beneficial interest in the Submitted Portion a Certificate
of Beneficial Ownership by a Non-United States Person or by Certain Other
Persons [and, in some cases, a Certificate of Status as a Foreign Branch of a
United States Financial Institution, authorizing us to inform the issuer or the
issuer's agent that it will comply with the requirements of Section
165(j)(3)(A), (B) or (C) of the Internal Revenue Code of 1986 and the
regulations thereunder]* substantially in the form of Exhibit A-1 [and A-2]* to
the Indenture.

            We hereby request that you deliver to the office of ________________
in ___________ definitive Bearer Securities in the denominations on the attached
Schedule A.

____________
*    Delete if inappropriate

            We further certify that as of the date hereof we have not received
any notification from any of the persons giving such certificates to the effect
that the statements made by them with respect to any part of the Submitted
Portion are no longer true and cannot be relied on as of the date hereof.

Dated:____________________

                                            By:_________________________________


                                     -109-

<PAGE>   1

                                                                     EXHIBIT 5.1

                  EFFECTIVE DATE OF THE REGISTRATION STATEMENT

Firstar Corporation
777 East Wisconsin Avenue
Milwaukee, Wisconsin 53202

Ladies and Gentlemen:

     I am Senior Vice President, General Counsel and Secretary of Firstar
Corporation (the "Corporation") and, as such, I have acted as counsel for the
Corporation in the preparation of a Registration Statement on Form S-3 (the
"Registration Statement") to be filed with the Securities and Exchange
Commission under the Securities Act of 1933, as amended, (the "Securities Act")
in connection with the proposed offer and sale of the following securities (the
"Securities") of the Corporation having an aggregate initial public offering
price of up to $1,000,000,000: (i) senior debt securities (the "Senior Debt
Securities"), (ii) subordinated debt securities (the "Subordinated Debt
Securities," and together with the Senior Debt Securities, the "Debt
Securities"), (iii) preferred stock and preference stock, par value $1.00 per
share (the "Preferred Stock"), of the Corporation, interests in which may be
evidenced by appropriately prepared depositary shares (the "Depositary Shares"),
(iv) common stock, par value $.01 per share, (the "Common Stock") of the
Corporation issuable upon conversion of Debt Securities, Preferred Stock, or
Depositary Shares, or upon exercise of warrants, and (v) appropriately prepared
warrants to purchase Debt Securities, Preferred Stock, or Common Stock
(collectively, the "Warrants"). The Securities may be offered separately or as
part of units with other Securities, in separate series, in amounts, at prices,
and on terms to be set forth in the prospectus and one or more supplements to
the prospectus (collectively, the "Prospectus") constituting a part of the
Registration Statement, and in the Registration Statement.

     The Senior Debt Securities are to be issued under an indenture in the form
filed as Exhibit 4.1 to the Registration Statement, with appropriate insertions,
(the "Senior Indenture") to be entered into by the Corporation and a trustee or
trustees to be named by the Corporation. The Subordinated Debt Securities are to
be issued under an indenture in the form filed as Exhibit 4.5 to the
Registration Statement, with appropriate insertions, (the "Subordinated
Indenture") to be entered into by the Corporation and a trustee or trustees to
be named by the Corporation. The Depositary Shares are to be issued under a
deposit agreement in the form filed as Exhibit 4.13 to the Registration
Statement, with appropriate insertions, (the "Deposit Agreement") to be entered
into by the Corporation, a depositary to be named by the Corporation, and the
holders from time to time of depositary receipts evidencing Depositary Shares.
The Common Stock and the Preferred Stock are to be issued under the Certificate
of Incorporation. The Warrants are to be issued under warrant agreements in the
forms filed as Exhibits 4.15 to 4.18 to the Registration Statement, with
appropriate insertions, (the "Warrant Agreements") to be entered into by the
Corporation and warrant agents to be named by the Corporation.

     Certain terms of the Securities to be issued by the Corporation from time
to time will be approved by the Board of Directors of the Corporation or a
committee thereof or certain authorized officers of the Corporation as part of
the corporate action taken and to be taken (the "Corporate Proceedings") in
connection with issuance of the Securities. I have examined or am otherwise
familiar with the Certificate of Incorporation, the By-Laws of the Corporation,
as amended, the Registration Statement, such of the Corporation Proceedings as
have occurred as of the date hereof, and such other documents, records, and
instruments as I have deemed necessary or appropriate for the purpose of this
opinion.

     Based on the foregoing, I am of the opinion that: (i) upon the execution
and delivery by the Corporation of the Senior Indenture or the Subordinated
Indenture, as the case may be, and the execution and delivery of the Deposit
Agreement, and the applicable Warrant Agreement, the completion of all required
Corporate Proceedings, and the execution, issuance, and delivery, and the
authentication by a duly appointed authenticating agent, of the Senior Debt
Securities and Subordinated Debt Securities, the Depositary Shares, and the
Warrants, respectively, pursuant to such agreements, such Senior Indenture,
<PAGE>   2

Subordinated Indenture, Deposit Agreement, or Warrant Agreement, as the case may
be, will become valid and binding instruments, and any Debt Securities issuable
thereunder will be legal, valid, and binding obligations of the Corporation
except in each case as enforcement of provisions of such instruments and
agreements may be limited by bankruptcy or other laws of general application
affecting the enforcement of creditors' rights and by general equity principles,
and any Depositary Shares, Warrants, or Preferred Stock (assuming completion of
the actions referred to in clause (ii) below) or Common Stock (assuming
completion of the actions referred to in clause (iii) below) issuable thereunder
will be duly and validly authorized and issued, fully paid, and nonassessable;
(ii) upon the authorization of issuance of the Preferred Stock, completion of
all required Corporate Proceedings and the execution, issuance, and delivery of
the Preferred Stock pursuant to such Certificate of Designations, the Preferred
Stock will be duly and validly authorized and issued, fully paid, and
nonassessable; and (iii) upon the authorization and issuance of the Common
Stock, the completion of all required Corporate Proceedings, and the execution,
issuance, and delivery of the Common Stock, the Common Stock will be duly and
validly authorized and issued, fully paid, and nonassessable. The foregoing
opinion assumes that (i) the consideration designated in the applicable
Corporate Proceedings for any Preferred Stock or Common Stock shall have been
received by the Corporation in accordance with applicable law; (ii) the Senior
Indenture, the Subordinated Indenture, the Deposit Agreement, and any Warrant
Agreement shall have been duly authorized, executed, and delivered by all
parties thereto other than the Corporation; (iii) the Registration Statement
shall have become effective under the Securities Act, and (iv) the applicable
Senior Indenture or Subordinated Indenture shall have become duly qualified
under the Trust Indenture Act of 1939, as amended.

     I hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to being named in the Prospectus included therein
under the caption "Validity of Securities" with respect to the matters stated
herein.

                                          Very truly yours,

                                          /s/ JENNIE P. CARLSON
                                          --------------------------------------
                                          Jennie P. Carlson

<PAGE>   1
                                                                    EXHIBIT 12.1

FIRSTAR CORPORATION
RATIO OF EARNINGS TO FIXED CHARGES
(THOUSANDS OF DOLLARS)
<TABLE>
<CAPTION>

                                 Quarter                       Years Ended December 31
                                 Ended        ---------------------------------------------------------------------
                                 3/31/99        1998           1997           1996           1995            1994
                              ----------     ----------     ----------     ----------     ----------     ----------
<S>                           <C>            <C>            <C>            <C>            <C>            <C>
EXCLUDING INTEREST
 ON DEPOSITS

Earnings
  Net income before taxes     $  252,858     $  638,099     $  769,934     $  624,100     $  575,014     $  539,314
  Interest on debt                73,053        316,751        270,526        235,381        256,628        155,469
  Preferred dividend                   0             83            483            872          1,521          2,223
  Portion of rents
    representative
    of interest factor             4,817         19,268         20,226         18,024         16,988         17,666
                              ----------     ----------     ----------     ----------     ----------     ----------
    Total                        330,728        974,201      1,061,169        878,377        850,151        714,672

Fixed charges

  Interest on debt            $   73,053     $  316,751     $  270,526        235,381     $  256,628        155,469
  Preferred dividend                   0             83            483            872          1,521          2,223
  Portion of rents
    representative
    of interest factor             4,817         19,268         20,226         18,024         16,988         17,666
                              ----------     ----------     ----------     ----------     ----------     ----------
    Total                         77,870        336,102        291,235        254,277        275,137        175,358

Ratio of earnings to
  fixed charges                      4 x            3 x         3.64 x         3.45 x         3.09 x         4.08 x


INCLUDING INTEREST ON
  DEPOSITS

Earnings
  Net income before taxes     $  252,858     $  638,099     $  769,934     $  624,100     $  575,014     $  539,314
  Interest on debt                73,053        316,751        270,526        235,381        256,628        155,469
  Interest on deposits           210,579        911,958        804,406        788,023        770,473        553,654
  Preferred dividend                   0             83            483            872          1,521          2,223
  Portion of rents
    representative
    of interest factor             4,817         19,268         20,226         18,024         16,988         17,666
                              ----------     ----------     ----------     ----------     ----------     ----------
    Total                        541,307      1,886,159      1,865,575      1,666,400      1,620,624      1,268,326

Fixed charges

  Interest on debt            $   73,053     $  316,751     $  270,526        235,381     $  256,628        155,469
  Interest on deposits           210,579        911,958        804,406        788,023        770,473        553,654
  Preferred dividend                   0             83            483            872          1,521          2,223
  Portion of rents
    representative
    of interest factor             4,817         19,268         20,226         18,024         16,988         17,666
                              ----------     ----------     ----------     ----------     ----------     ----------
    Total                        288,449      1,248,060      1,095,641      1,042,300      1,045,610        729,012

Ratio of earnings to
  fixed charges                   1.88 x         1.51 x         1.70 x         1.60 x         1.55 x         1.74 x
</TABLE>

<PAGE>   1
\                                                                   EXHIBIT 23.1



                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement of our report dated January 11, 1999,
incorporated by reference in Firstar Corporation's Annual Report on Form 10-K
for the year ended December 31, 1998.


                                                      /s/ Arthur Andersen LLP


Cincinnati, Ohio,
May 18, 1999




<PAGE>   1
                                                                    EXHIBIT 23.2

                         INDEPENDENT AUDITORS' CONSENT

The Board of Directors
Mercantile Bancorporation Inc.:

We consent to the incorporation by reference in the registration statement on
Form S-3 of Firstar Corporation of our report dated January 20, 1999, with
respect to the consolidated balance sheets of Mercantile Bancorporation Inc. and
subsidiaries as of December 31, 1998, 1997 and 1996, and the related
consolidated statements of income, changes in shareholders' equity, cash flows,
and comprehensive income for each of the years in the three-year period ended
December 31, 1998, which report appears in the Form 8-K of Firstar Corporation
dated May 4, 1999 (as amended on May 19, 1999).

St. Louis, Missouri
June 4, 1999

<PAGE>   1
                                                                    EXHIBIT 24.1

                              FIRSTAR CORPORATION
                               POWER OF ATTORNEY


         We, the undersigned directors and officers of Firstar Corporation,
appoint Jerry A. Grundhofer, David M. Moffett and Jennie P. Carlson, or any of
them, our true and lawful attorneys and agents, to do any and all acts and
things in our names, and on our behalf in our capacities as directors and
officers, which said attorneys and agents, or each of them, deem necessary or
advisable to enable the Corporation to comply with the Securities Act of 1933,
as amended, and any rules, regulations and requirements of the Securities and
Exchange Commission, in connection with a Registration Statement on Form S-3 to
be filed for the registration of Debt in an aggregate initial principal amount
of $1,000,000,000, including, without limitation, power and authority to sign
for us, or any of us, in our names in the capacities indicated below, any and
all amendments to such Registration Statement, and we ratify and confirm all
that said attorneys and agents, or each of them, does or causes to be done by
virtue of their power.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this Power of Attorney has been signed by the following persons as of the 9th
day of March, 1999, in the capacities indicated:

<TABLE>
<CAPTION>
          SIGNATURE                                     TITLE
          ---------                                     -----
<S>                                      <C>
/s/ Jerry A. Grundhofer                  President & Chief Executive Officer
- ------------------------------
Jerry A. Grundhofer


/s/ Roger L. Fitzsimonds                 Chairman of the Board
- ------------------------------
Roger L. Fitzsimonds


/s/ David M. Moffett                     Vice Chairman & Chief Financial Officer
- ------------------------------
David M. Moffett


/s/ Paul M. Baker                        Director
- ------------------------------
Paul M. Baker

/s/ Michael E. Batten                    Director
- ------------------------------
Michael E. Batten


/s/ James R. Bridgeland, Jr.             Director
- ------------------------------
James R. Bridgeland, Jr.


/s/ Laurance L. Browning, Jr.            Director
- ------------------------------
Laurance L. Browning, Jr.


/s/ Robert C. Buchanan                   Director
- ------------------------------
Robert C. Buchanan

</TABLE>
<PAGE>   2
/s/ Victoria B. Buyniski                     Director
- ---------------------------------
Victoria B. Buyniski


/s/ Samuel M. Cassidy, III                   Director
- ---------------------------------
Samuel M. Cassidy, III


/s/ George M. Chester. Jr.                   Director
- ---------------------------------
George M. Chester. Jr.


/s/ V. Anderson Coombe                       Director
- ---------------------------------
V. Anderson Coombe


/s/ John C. Dannemiller                      Director
- ---------------------------------
John C. Dannemiller


/s/ James L. Forbes                          Director
- ---------------------------------
James L. Forbes


/s/ David B. Garvin                          Director
- ---------------------------------
David B. Garvin


/s/ J.P. Hayden, Jr.                         Director
- ---------------------------------
J.P. Hayden, Jr.


/s/ Joe F. Hladky                            Director
- ---------------------------------
Joe F. Hladky


/s/ Roger L. Howe                            Director
- ---------------------------------
Roger L. Howe


/s/ Thomas J. Klinedinst, Jr.                Director
- ---------------------------------
Thomas J. Klinedinst, Jr.


/s/ William H. Lacy                          Director
- ---------------------------------
William H. Lacy


/s/ Sheldon B. Lubar                         Director
- ---------------------------------
Sheldon B. Lubar


/s/ Kenneth P. Manning                       Director
- ---------------------------------
Kenneth P. Manning


/s/ Daniel F. McKeitban, Jr.                 Director
- ---------------------------------
Daniel F. McKeitban, Jr.
<PAGE>   3
/s/ Charles S. Mechem, Jr.                   Director
- ----------------------------------
Charles S. Mechem, Jr.


/s/ Daniel J. Meyer                          Director
- ----------------------------------
Daniel J. Meyer


/s/ David B. O'Maley                         Director
- ----------------------------------
David B. O'Maley


/s/ Robert J. O'Toole                        Director
- ----------------------------------
Robert J. O'Toole


/s/ O'dell M. Owens, M.D.                    Director
- ----------------------------------
O'dell M. Owens, M.D.


/s/ Thomas E. Petry                          Director
- ----------------------------------
Thomas E. Petry


/s/ Judith D. Pyle                           Director
- ----------------------------------
Judith D. Pyle


/s/ John J. Stollenwerk                      Director
- ----------------------------------
John J. Stollenwerk


/s/ Oliver W. Waddell                        Director
- ----------------------------------
Oliver W. Waddell


/s/ William W. Wirtz                         Director
- ----------------------------------
William W. Wirtz


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