WASHINGTON REAL ESTATE INVESTMENT TRUST
S-3, 1996-06-12
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>   1
 
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 12, 1996
                                                    REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
 
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                    WASHINGTON REAL ESTATE INVESTMENT TRUST
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                   <C>
       DISTRICT OF COLUMBIA                     53-0261100
 (STATE OR OTHER JURISDICTION OF             (I.R.S. EMPLOYER
  INCORPORATION OR ORGANIZATION)            IDENTIFICATION NO.)
</TABLE>
 
                            ------------------------
 
                            10400 CONNECTICUT AVENUE
                           KENSINGTON, MARYLAND 20895
                                 (301) 929-5900
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER OF REGISTRANT'S PRINCIPAL
                               EXECUTIVE OFFICES)
                            ------------------------
 
                              MR. LARRY E. FINGER
                           SENIOR VICE PRESIDENT AND
                            CHIEF FINANCIAL OFFICER
                            10400 CONNECTICUT AVENUE
                           KENSINGTON, MARYLAND 20895
                                 (301) 929-5900
 (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER OF AGENT FOR SERVICE)
 
      THE COMMISSION IS REQUESTED TO SEND COPIES OF ALL COMMUNICATIONS TO:
 
<TABLE>
<S>                                   <C>
     JEFFREY E. JORDAN, ESQ.           CATHERINE S. GALLAGHER, ESQ.
 ARENT FOX KINTNER PLOTKIN & KAHN         ANDREWS & KURTH L.L.P.
  1050 CONNECTICUT AVENUE, N.W.       1701 PENNSYLVANIA AVENUE, N.W.
      WASHINGTON, D.C. 20036              WASHINGTON, D.C. 20006
          (202) 857-6473                      (202) 662-2700
</TABLE>
 
          APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO PUBLIC:
  FROM TIME TO TIME AFTER THE EFFECTIVE DATE OF THIS REGISTRATION STATEMENT AS
                        DETERMINED BY MARKET CONDITIONS.
 
    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, 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 earliest
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 earliest effective registration statement
for the same offering. / /
    If the delivery of the prospectus is expected to be made pursuant to Rule
434, please check the following box. /X/
                            ------------------------
 
                        CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
                                            AMOUNT
        TITLE OF EACH CLASS OF               TO BE            PROPOSED MAXIMUM           PROPOSED MAXIMUM            AMOUNT OF
     SECURITIES TO BE REGISTERED          REGISTERED      OFFERING PRICE PER UNIT    AGGREGATE OFFERING PRICE    REGISTRATION FEE
 
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                      <C>              <C>                        <C>                         <C>
Debt Securities(1)(2).................   $ 100,000,000              (3)                    $100,000,000             $34,483(4)
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
(1) Subject to note (2) below, there are being registered an indeterminate
    principal amount of Debt Securities. If any Debt Securities are being issued
    at an original issue discount, then the offering price shall be in such
    greater principal amount as shall result in an aggregated initial offering
    price not to exceed $100,000,000 less the dollar amount of any securities
    previously issued hereunder.
(2) In no event will the aggregate initial offering price of all securities
    issued from time to time pursuant to this Registration Statement exceed
    $100,000,000.
(3) Omitted pursuant to General Instruction II.D of Form S-3 under the
    Securities Act of 1933, as amended.
(4) Calculated pursuant to Rule 457(o) of the rules under the Securities Act of
    1933, as amended.
                            ------------------------
 
    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 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
     INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
     REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
     SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR
     MAY OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT
     BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR
     THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE
     SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE
     UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS
     OF ANY SUCH STATE.
 
                             SUBJECT TO COMPLETION
                   PRELIMINARY PROSPECTUS DATED JUNE 12, 1996
[WRIT LOGO]
PROSPECTUS
 
                                  $100,000,000
 
                    WASHINGTON REAL ESTATE INVESTMENT TRUST
                                DEBT SECURITIES
                            ------------------------
     Washington Real Estate Investment Trust ("WRIT" or the "Trust") may from
time to time offer, in one or more series, unsecured debt securities with an
aggregate public offering price of up to $100,000,000 (or its equivalent in
another currency based on the exchange rate at the time of sale) in amounts, at
prices and on terms to be determined at the time of offering (the "Securities").
The Securities may be offered in separate series in amounts, at prices and on
terms to be set forth in one or more supplements to this Prospectus (each a
"Prospectus Supplement").
 
     The specific terms of the Securities in respect of which this Prospectus is
being delivered will be set forth in the applicable Prospectus Supplement and
will include, where applicable: the specific title, aggregate principal amount,
currency, form (which may be registered or bearer, or certificated or global),
authorized denominations, maturity, rate (or manner of calculation thereof) and
time of payment of interest, terms for redemption at the option of the Trust or
repayment at the option of the holder, terms for sinking fund payments,
covenants and any initial public offering price.
 
     The applicable Prospectus Supplement will also contain information, where
applicable, about certain United States federal income tax considerations
relating to, and any listing on a securities exchange of, the Securities covered
by such Prospectus Supplement.
 
     The Securities may be offered directly, through agents designated from time
to time by the Trust or to or through underwriters or dealers. If any agents or
underwriters are involved in the sale of any of the Securities, their names, and
any applicable purchase price, fee, commission or discount arrangement between
or among them, will be set forth, or will be calculable from the information set
forth, in an accompanying Prospectus Supplement. See "Plan of Distribution." No
Securities may be sold without delivery of a Prospectus Supplement describing
the method and terms of the offering of such series of Securities.
 
                            ------------------------
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
    ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
     CONTRARY IS A CRIMINAL OFFENSE.
 
                            ------------------------
 
       THE ATTORNEY GENERAL OF THE STATE OF NEW YORK HAS NOT PASSED ON OR
            ENDORSED THE MERITS OF THIS OFFERING. ANY REPRESENTATION
                          TO THE CONTRARY IS UNLAWFUL.
 
                            ------------------------
 
                The date of this Prospectus is          , 1996.
<PAGE>   3
 
                             AVAILABLE INFORMATION
 
     The Trust is subject to the information requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and, in accordance
therewith files reports and other information with the Securities and Exchange
Commission (the "Commission"). Reports, proxy statements and other information
filed by the Trust can be inspected and copied at the public reference
facilities maintained by the Commission at 450 Fifth Street, N.W., Washington,
D.C. 20549 and at the Commission's Regional Offices at 7 World Trade Center, New
York, New York 10048 and 500 West Madison Street, Suite 1400, Chicago, Illinois
60661. Copies of such materials can be obtained at prescribed rates from the
Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549. The Trust's shares of beneficial interest are listed on
the American Stock Exchange, 86 Trinity Place, New York, New York 10005 and
reports, proxy statements and other information filed by the Trust can be
inspected at such Exchange.
 
     The Trust has filed a registration statement on Form S-3 (together with all
amendments and exhibits thereto, the "Registration Statement") under the
Securities Act of 1933, as amended (the "Securities Act"), with respect to the
Securities offered hereby. This prospectus does not contain all the information
set forth in the Registration Statement, certain parts of which are omitted in
accordance with the rules and regulations of the Commission. For further
information, reference is made to the Registration Statement.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The Trust hereby incorporates by reference the following documents filed
with the Commission pursuant to the Exchange Act:
 
          1. The Trust's Annual Report on Form 10-K for the year ended December
             31, 1995.
 
          2. The Trust's Quarterly Report on Form 10-Q for the quarter ended
             March 31, 1996.
 
          3. The Trust's Proxy Statement dated April 22, 1996.
 
          4. The Trust's Current Report on Form 8-K dated May 31, 1996.
 
     Each document filed subsequent to the date of this Prospectus pursuant to
Section 13(a), 13(c), 14 or 15(d) of the Exchange Act and prior to termination
of the offering of all Securities to which this Prospectus relates shall be
deemed to be incorporated by reference in this Prospectus and shall be a part
hereof from the date of filing of such document. Any statement contained herein
or in a document incorporated or deemed to be incorporated by reference herein
shall be deemed to be modified or superseded for purposes of this Prospectus to
the extent that a statement contained in this Prospectus (in the case of a
statement in a previously-filed document incorporated or deemed to be
incorporated by reference herein), in any accompanying Prospectus Supplement
relating to a specific offering of Securities or in any other subsequently filed
document that is also incorporated or deemed to be incorporated by reference
herein, modifies or supersedes such statement. Any such statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Prospectus or any accompanying Prospectus Supplement.
Subject to the foregoing, all information appearing in this Prospectus and each
accompanying Prospectus Supplement is qualified in its entirety by the
information appearing in the documents incorporated by reference.
 
     The Trust will provide without charge to each person to whom a copy of this
Prospectus is delivered, upon their written or oral request, a copy of any or
all of the documents incorporated herein by reference (other than exhibits to
such documents). Written requests for such copies should be addressed to Larry
E. Finger, Washington Real Estate Investment Trust, 10400 Connecticut Avenue,
Kensington, Maryland 20895, telephone (301) 929-5900 or (800) 565-9748.
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                           PAGE
                                                                                           ----
        <S>                                                                                <C>
        AVAILABLE INFORMATION...........................................................     2
        INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.................................     2
        THE TRUST.......................................................................     3
        USE OF PROCEEDS.................................................................     3
        RATIOS OF EARNINGS TO FIXED CHARGES.............................................     3
        DESCRIPTION OF SECURITIES.......................................................     3
        ORGANIZATION OF THE TRUST.......................................................    15
        PLAN OF DISTRIBUTION............................................................    15
        LEGAL OPINIONS..................................................................    16
        EXPERTS.........................................................................    16
</TABLE>
 
                                        2
<PAGE>   4
 
                                   THE TRUST
 
     The Trust is an equity real estate investment trust investing in income
producing properties principally in the greater Washington-Baltimore region. The
Trust owns a diversified portfolio of 44 properties consisting of 16 office
buildings, 12 shopping centers, six high-rise apartment buildings and 10
industrial distribution properties.
 
     WRIT's principal objective is to increase operating income by investing in
high quality real estate with strong growth potential in prime locations and
aggressively managing these properties with active leasing and capital
improvement programs. The percentage leased at March 31, 1996 for the Trust's
properties was 90% for office buildings, 90% for shopping centers, 95% for
apartment buildings and 96% for industrial distribution properties.
 
     Total debt (all medium term) on March 31, 1996 was $46,700,000, which
represented approximately 9% of the market capitalization of the Trust.
 
     WRIT's income from operations and funds from operations have increased for
29 consecutive years. WRIT concentrates on increasing its funds from operations
to achieve its objective of paying increasing dividends to its shareholders.
Consecutive quarterly dividends have been paid for 33 years, and the annual
dividend paid has increased every year since 1970.
 
     The Trust is a District of Columbia business trust founded in 1960. The
principal offices of the Trust are located at 10400 Connecticut Avenue,
Kensington, Maryland 20895, telephone (301) 929-5900 or (800) 565-9748.
 
                                USE OF PROCEEDS
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
Trust intends to use the net proceeds from the sale of Securities for general
business purposes, including the acquisition and/or renovation, expansion or
improvement of income-producing properties or the repayment of indebtedness
drawn under the Trust's lines of credit. It is expected that properties
purchased in the future will be of the same general character as those presently
held by the Trust. Pending such uses, the net proceeds may be invested in short-
term income producing investments such as commercial paper, government
securities or money market funds that invest in government securities.
 
                      RATIOS OF EARNINGS TO FIXED CHARGES
 
     The following table sets forth the Trust's ratios of earnings to fixed
charges for the periods shown:
 
<TABLE>
<CAPTION>
THREE MONTHS
   ENDED                    YEAR ENDED DECEMBER 31,
 MARCH 31,       ----------------------------------------------
    1996         1995      1994       1993      1992      1991
- ------------     -----     -----     ------     -----     -----
<S>              <C>       <C>       <C>        <C>       <C>
    11.54x       12.95x    38.65x    366.95x    45.13x    17.94x
</TABLE>
 
     The ratios of earnings to fixed charges were computed by dividing earnings
by fixed charges. For this purpose, earnings consist of income from continued
operations and fixed charges. Fixed charges consist of interest expense
(including interest costs capitalized) and the amortization of debt issuance
costs.
 
                           DESCRIPTION OF SECURITIES
 
GENERAL
 
     The Securities will be direct unsecured obligations of the Trust and will
rank equally with all other unsecured and unsubordinated indebtedness of the
Trust. The Securities will be issued under an indenture (the "Indenture")
between the Trust and The First National Bank of Chicago, as trustee (the
"Indenture
 
                                        3
<PAGE>   5
 
Trustee"). A form of the Indenture has been filed as an exhibit to the
Registration Statement to which this Prospectus is a part and is available for
inspection at the corporate trust office of the Indenture Trustee at 14 Wall
Street, Eighth Floor, New York, New York 10005. The Indenture will be subject to
and governed by the Trust Indenture Act of 1939, as amended (the "TIA"). The
statements made under this heading relating to the Securities and the Indenture
are summaries of the provisions thereof and do not purport to be complete and
are qualified in their entirety by reference to the Indenture and such
Securities. All Section references herein are to sections of the Indenture, and
capitalized terms used but not defined herein shall have the respective meanings
set forth in the Indenture.
 
TERMS
 
     Except as set forth in any Prospectus Supplement, the Securities may be
issued without limit as to aggregate principal amount, in one or more series, in
each case as established from time to time by the Trust or as established in the
Indenture or in one or more indentures supplemental to such Indenture. All
Securities of one series need not be issued at the same time and, unless
otherwise provided, a series may be reopened, without the consent of the holders
of the Securities of such series, for issuances of additional Securities of such
series (Section 301).
 
     The Indenture provides that there may be more than one Indenture Trustee
thereunder, each with respect to one or more series of Securities. Any Indenture
Trustee under the Indenture may resign or be removed with respect to one or more
series of Securities, and a successor Indenture Trustee may be appointed to act
with respect to such series (Section 608). In the event that two or more persons
are acting as Indenture Trustee with respect to different series of Securities,
each such Indenture Trustee shall be an Indenture Trustee of a trust under the
Indenture separate and apart from the trust administered by any other Indenture
Trustee (Section 609), and, except as otherwise indicated herein, any action
described herein to be taken by an Indenture Trustee may be taken by each such
Indenture Trustee with respect to, and only with respect to, the one or more
series of Securities for which it is Indenture Trustee under the Indenture.
 
     The Prospectus Supplement relating to the series of Securities being
offered will contain the specific terms thereof, including:
 
      (1) The title of such Securities;
 
      (2) The aggregate principal amount of such Securities and any limit on
          such aggregate principal amount;
 
      (3) The percentage of the principal amount at which such Securities will
          be issued and, if other than the principal amount thereof, the portion
          of the principal amount thereof payable upon declaration of
          acceleration of the maturity thereof, or the method by which any such
          portion shall be determined;
 
      (4) The date or dates, or the method for determining such date or dates,
          on which the principal of such Securities will be payable;
 
      (5) The rate or rates (which may be fixed or variable), or the method by
          which such rate or rates shall be determined, at which such Securities
          will bear interest, if any;
 
      (6) The date or dates, or the method for determining such date or dates,
          from which any such interest will accrue, the dates on which any such
          interest will be payable, the record dates for such interest payment
          dates, or the method by which such dates shall be determined, the
          persons to whom such interest shall be payable, and the basis upon
          which interest shall be calculated if other than that of a 360-day
          year of twelve 30-day months;
 
      (7) The place or places where the principal of (and premium, if any) and
          interest, if any, on such Securities will be payable, where such
          Securities may be surrendered for registration of transfer or exchange
          and where notices or demands to or upon the Trust in respect of such
          Securities and the Indenture may be served;
 
                                        4
<PAGE>   6
 
      (8) The period or periods within which, the price or prices at which and
          the other terms and conditions upon which such Securities may be
          redeemed, as a whole or in part, at the option of the Trust, if the
          Trust is to have such an option;
 
      (9) The obligation, if any, of the Trust to redeem, repay or purchase such
          Securities pursuant to any sinking fund or analogous provision or at
          the option of a holder thereof, and the period or periods within
          which, the price or prices at which and the other terms and conditions
          upon which such Securities will be redeemed, repaid or purchased, as a
          whole or in part, pursuant to such obligation;
 
     (10) If other than U.S. dollars, the currency or currencies in which such
          Securities are denominated and payable, which may be a foreign
          currency or units of two or more foreign currencies or a composite
          currency or currencies, and the terms and conditions relating thereto;
 
     (11) Whether the amount of payments of principal of (and premium, if any)
          or interest, if any, on such Securities may be determined with
          reference to an index, formula or other method (which index, formula
          or method may, but need not be, based on a currency, currencies,
          currency unit or units or composite currency or currencies) and the
          manner in which such amounts shall be determined;
 
     (12) The events of default or covenants of such Securities, to the extent
          different from those described herein;
 
     (13) Whether such Securities will be issued in certificated or book-entry
          form;
 
     (14) Whether such Securities will be in registered or bearer form and, if
          in registered form, the denominations thereof if other than $1,000 and
          any integral multiple thereof and, if in bearer form, the
          denominations thereof and terms and conditions relating thereto;
 
     (15) The applicability, if any, of the defeasance and covenant defeasance
          provisions described herein, or any modification thereof;
 
     (16) Whether and under what circumstances the Trust will pay any additional
          amounts on such Securities in respect of any tax, assessment or
          governmental charge and, if so, whether the Trust will have the option
          to redeem such Securities in lieu of making such payment; and
 
     (17) Any other terms of such Securities.
 
     The Securities may provide for less than the entire principal amount
thereof to be payable upon declaration of acceleration of the maturity thereof
("Original Issue Discount Securities"). Special U.S. federal income tax,
accounting and other considerations applicable to Original Issue Discount
Securities will be described in the applicable Prospectus Supplement.
 
     Except as may be set forth in any Prospectus Supplement, the Securities
will not contain any provisions that would limit the ability of the Trust to
incur indebtedness or that would afford holders of Securities protection in the
event of a highly leveraged or similar transaction involving the Trust or in the
event of a change of control. Reference is made to the applicable Prospectus
Supplement for information with respect to any deletions from, modifications of,
or additions to, the events of default or covenants of the Trust that are
described below, including any addition of a covenant or other provision
providing event risk or similar protection.
 
DENOMINATION, INTEREST, REGISTRATION AND TRANSFER
 
     Unless otherwise described in the applicable Prospectus Supplement, the
Securities of any series will be issuable in denominations of $1,000 and
integral multiples thereof (Section 302).
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
principal of (and applicable premium, if any) and interest on any series of
Securities will be payable at the corporate trust office of the Indenture
Trustee, which initially shall be c/o First Chicago Trust Company of New York,
14 Wall Street, Eighth Floor, New York, New York 10005; provided that, at the
option of the Trust, payment of interest may be made by check mailed to the
address of the person entitled thereto as it appears in the applicable register
 
                                        5
<PAGE>   7
 
for such Securities or by wire transfer of funds to such person at an account
maintained within the United States (Sections 301, 307 and 1002).
 
     Any interest not punctually paid or duly provided for on any interest
payment date with respect to a Security ("Defaulted Interest") will forthwith
cease to be payable to the holder on the applicable Regular Record Date and may
either be paid to the Person in whose name such Security is registered at the
close of business on a special record date (the "Special Record Date") for the
payment of such Defaulted Interest to be fixed by the Indenture Trustee, notice
whereof shall be given to the holder of such Security not less than 10 days
prior to such Special Record Date, or may be paid at any time in any other
lawful manner, all as more completely described in the Indenture (Section 307).
 
     Subject to certain limitations imposed upon Securities issued in book-entry
form, the Securities of any series will be exchangeable for other Securities of
the same series and of a like aggregate principal amount and tenor of different
authorized denominations upon surrender of such Securities at the corporate
trust office of the Indenture Trustee referred to above. In addition, subject to
certain limitations imposed upon Securities issued in book-entry form, the
Securities of any series may be surrendered for registration of transfer or
exchange thereof at the corporate trust office of the Indenture Trustee. Every
Security surrendered for registration of transfer or exchange must be duly
endorsed or accompanied by a written instrument of transfer. No service charge
will be made for any registration of transfer or exchange of any Securities, but
the Trust may require payment of a sum sufficient to cover any tax or other
governmental charge payable in connection therewith (Section 305). If the
applicable Prospectus Supplement refers to any transfer agent (in addition to
the Indenture Trustee) initially designated by the Trust with respect to any
series of Securities, the Trust may at any time rescind the designation of any
such transfer agent or approve a change in the location through which any such
transfer agent acts, except that the Trust will be required to maintain a
transfer agent in each place of payment for such series. The Trust may at any
time designate additional transfer agents with respect to any series of
Securities (Section 1002).
 
     Neither the Trust nor the Indenture Trustee shall be required to (i) issue,
register the transfer of or exchange Securities of any series during a period
beginning at the opening of business 15 days before any selection of Securities
of that series to be redeemed and ending at the close of business on the day of
mailing of the relevant notice of redemption; (ii) register the transfer of or
exchange any Security, or portion thereof, called for redemption, except the
unredeemed portion of any Security being redeemed in part; or (iii) issue,
register the transfer of or exchange any Security that has been surrendered for
repayment at the option of the holder, except the portion, if any, of such
Security not to be so repaid (Section 305).
 
MERGER, CONSOLIDATION OR SALE
 
     The Trust will be permitted to consolidate with, or sell, lease or convey
all or substantially all of its assets to, or merge with or into, any other
entity provided that (a) either the Trust shall be the continuing entity, or the
successor entity (if other than the Trust) formed by or resulting from any such
consolidation or merger or which shall have received the transfer of such assets
shall expressly assume payment of the principal of (and premium, if any) and
interest on all of the Securities and the due and punctual performance and
observance of all of the covenants and conditions contained in the Indenture;
(b) immediately after giving effect to such transaction and treating any
indebtedness that becomes an obligation of the Trust or any Subsidiary as a
result thereof as having been incurred by the Trust or such Subsidiary at the
time of such transaction, no Event of Default under the Indenture, and no event
which, after notice or the lapse of time, or both, would become such an Event of
Default, shall have occurred and be continuing; and (c) an officer's certificate
and legal opinion covering such conditions shall be delivered to the Indenture
Trustee (Sections 801 and 803).
 
CERTAIN COVENANTS
 
     Limitations on Incurrence of Debt.  The Indenture provides that the Trust
will not, and will not permit any Subsidiary to, incur any Debt (as defined
below) if, immediately after giving effect to the incurrence of such Debt and
the application of the proceeds thereof, the aggregate principal amount of all
outstanding Debt of the Trust and its Subsidiaries on a consolidated basis
determined in accordance with generally accepted
 
                                        6
<PAGE>   8
 
accounting principles is greater than 60% of the sum of (without duplication)
(i) the Trust's Total Assets as of the end of the calendar quarter covered in
the Trust's Annual Report on Form 10-K or Quarterly Report on Form 10-Q, as the
case may be, most recently filed with the Commission (or, if such filing is not
permitted under the Exchange Act, with the Indenture Trustee) prior to the
incurrence of such additional Debt and (ii) any increase in the Trust's Total
Assets since the end of such quarter including, without limitation, any increase
in Total Assets resulting from the incurrence of such additional Debt (such
increase together with the Trust's Total Assets being referred to as "Adjusted
Total Assets") (Section 1011).
 
     In addition to the foregoing limitation on the incurrence of Debt, the
Indenture provides that the Trust will not, and will not permit any Subsidiary
to, incur any Debt secured by any mortgage, lien, charge, pledge, encumbrance or
security interest of any kind upon any of the property of the Trust or any
Subsidiary ("Secured Debt"), whether owned at the date of the Indenture or
thereafter acquired, if, immediately after giving effect to the incurrence of
such additional Secured Debt and the application of the proceeds thereof, the
aggregate principal amount of all outstanding Secured Debt of the Trust and its
Subsidiaries on a consolidated basis is greater than 40% of the Trust's Adjusted
Total Assets (Section 1011).
 
     In addition to the foregoing limitations on the incurrence of Debt, the
Indenture provides that the Trust will not, and will not permit any Subsidiary
to, incur any Debt if the ratio of Consolidated Income Available for Debt
Service (as defined below) to the Annual Service Charge (as defined below) for
the four consecutive fiscal quarters most recently ended prior to the date on
which such additional Debt is to be incurred shall have been less than 1.5 to
1.0, on a pro forma basis after giving effect thereto and to the application of
the proceeds therefrom, and calculated on the assumption that (i) such Debt and
any other Debt incurred by the Trust and its Subsidiaries since the first day of
such four-quarter period and the application of the proceeds therefrom,
including to refinance other Debt, had occurred at the beginning of such period;
(ii) the repayment or retirement of any other Debt by the Trust and its
Subsidiaries since the first day of such four-quarter period had been incurred,
repaid or retired at the beginning of such period (except that, in making such
computation, the amount of Debt under any revolving credit facility shall be
computed based upon the average daily balance of such Debt during such period);
(iii) in the case of Acquired Debt (as defined below) or Debt incurred in
connection with any acquisition since the first day of such four-quarter period,
the related acquisition had occurred as of the first day of such period with the
appropriate adjustments with respect to such acquisition being included in such
pro forma calculation; and (iv) in the case of any acquisition or disposition by
the Trust or its Subsidiaries of any asset or group of assets since the first
day of such four-quarter period, whether by merger, stock purchase or sale, or
asset purchase or sale, such acquisition or disposition or any related repayment
of Debt had occurred as of the first day of such period with the appropriate
adjustments with respect to such acquisition or disposition being included in
such pro forma calculation (Section 1011).
 
     For purposes of the foregoing provisions regarding the limitation on the
incurrence of Debt, Debt shall be deemed to be "incurred" by the Trust or a
Subsidiary whenever the Trust or such Subsidiary shall create, assume, guarantee
or otherwise become liable in respect thereof.
 
     Maintenance of Total Unencumbered Assets.  The Trust is required to
maintain Total Unencumbered Assets (as defined below) of not less than 150% of
the aggregate outstanding principal amount of the Unsecured Debt (as defined
below) of the Trust (Section 1012).
 
     As used herein:
 
     "Acquired Debt" means Debt of a Person (i) existing at the time such Person
becomes a Subsidiary or (ii) assumed in connection with the acquisition of
assets from such Person, in each case, other than Debt incurred in connection
with, or in contemplation of, such Person becoming a Subsidiary or such
acquisition. Acquired Debt shall be deemed to be incurred on the date of the
related acquisition of assets from any Person or the date the acquired Person
becomes a Subsidiary.
 
     "Annual Service Charge" as of any date means the maximum amount which is
payable in any period for interest on, and original issue discount of, Debt of
the Trust and its Subsidiaries and the amount of dividends which are payable in
respect of any Disqualified Stock (as defined below).
 
                                        7
<PAGE>   9
 
     "Capital Stock" means, with respect to any Person, any capital stock
(including preferred stock), shares, interests, participations or other
ownership interests (however designated) of such Person and any rights (other
than debt securities convertible into or exchangeable for corporate stock),
warrants or options to purchase any thereof.
 
     "Consolidated Income Available for Debt Service" for any period means
Consolidated Net Income (as defined below) of the Trust and its Subsidiaries (i)
plus amounts which have been deducted for (a) interest on Debt of the Trust and
its Subsidiaries, (b) provision for taxes of the Trust and its Subsidiaries
based on income, (c) amortization of debt discount, (d) depreciation and
amortization, (e) the effect of any noncash charge resulting from a change in
accounting principles in determining Consolidated Net Income for such period,
(f) amortization of deferred charges and (g) provision for or realized losses on
properties and (ii) less amounts which have been included for gains on
properties.
 
     "Consolidated Net Income" for any period means the amount of consolidated
net income (or loss) of the Trust and its Subsidiaries for such period
determined on a consolidated basis in accordance with generally accepted
accounting principles.
 
     "Debt" of the Trust or any Subsidiary means any indebtedness of the Trust
or any Subsidiary, whether or not contingent, in respect of (i) borrowed money
evidenced by bonds, notes, debentures or similar instruments, (ii) indebtedness
secured by any mortgage, pledge, lien, charge, encumbrance or any security
interest existing on property owned by the Trust or any Subsidiary, (iii) the
reimbursement obligations, contingent or otherwise, in connection with any
letters of credit actually issued or amounts representing the balance deferred
and unpaid of the purchase price of any property except any such balance that
constitutes an accrued expense or trade payable, or all conditional sale
obligations or obligations under any title retention agreement, (iv) the
principal amount of all obligations of the Trust or any Subsidiary with respect
to redemption, repayment or other repurchase of any Disqualified Stock, or (v)
any lease of property by the Trust or any Subsidiary as lessee which is
reflected in the Trust's consolidated balance sheet as a capitalized lease in
accordance with generally accepted accounting principles to the extent, in the
case of items of indebtedness under (i) through (iii) above, that any such items
(other than letters of credit) would appear as a liability on the Trust's
consolidated balance sheet in accordance with generally accepted accounting
principles, and also includes, to the extent not otherwise included, any
obligation by the Trust or any Subsidiary to be liable for, or to pay, as
obligor, guarantor or otherwise (other than for purposes of collection in the
ordinary course of business), indebtedness of another person (other than the
Trust or any Subsidiary).
 
     "Disqualified Stock" means, with respect to any Person, any Capital Stock
of such Person which by the terms of such Capital Stock (or by the terms of any
security into which it is convertible or for which it is exchangeable or
exercisable), upon the happening of any event or otherwise (i) matures or is
mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, (ii)
is convertible into or exchangeable or exercisable for Debt or Disqualified
Stock or (iii) is redeemable at the option of the holder thereof, in whole or in
part, in each case on or prior to the Stated Maturity of the series of Debt
Securities.
 
     "Encumbrance" means any mortgage, security interest, pledge, hypothecation,
assignment, deposit arrangement, encumbrance, lien (statutory or other) or
preference, priority or other security agreement, except: (i) liens for taxes
(a) which are not yet delinquent, (b) which are not in an aggregate amount, as
to the Trust and all Subsidiaries, of greater than $          or (c) which are
being contested in good faith by all appropriate proceedings, provided that
adequate reserves with respect thereto are maintained on the books of the Trust
or its Subsidiaries, as the case may be, in conformity with GAAP; (ii) carriers,
warehousemen's, mechanic's, materialmen's, repairmen's or other like liens (a)
which are not in an aggregate amount, as to the Trust and all Subsidiaries, of
greater than $          , (b) which do not remain unsatisfied or undischarged
for a period of more than 90 days or (c) which are being contested in good faith
by all appropriate proceedings; (iii) pledges or deposits in connection with
workers compensation, unemployment insurance and other social security
legislation and deposits securing liability to insurance carriers under
insurance or self-insurance arrangements; (iv) deposits to secure the
performance of bids, trade contracts (other than for borrowed money), leases,
statutory obligations, surety and appeal bonds, performance bonds and other
obligations of a
 
                                        8
<PAGE>   10
 
like nature incurred in the ordinary course of business; and (v) easements,
rights of way, restrictions, development orders, plats and other similar
encumbrances.
 
     "Subsidiary" means a corporation, partnership or limited liability company,
a majority of the outstanding voting stock, partnership interests or membership
interests, as the case may be, of which is owned or controlled, directly or
indirectly, by the Trust or by one or more other Subsidiaries of the Trust. For
the purposes of this definition, "voting stock" means stock having voting power
for the election of directors, or trustees, as the case may be, whether at all
times or only so long as no senior class of stock has such voting power by
reason of any contingency.
 
     "Total Assets" as of any date means the sum of (i) the Undepreciated Real
Estate Assets and (ii) all other assets of the Trust and its Subsidiaries
determined in accordance with generally accepted accounting principles (but
excluding accounts receivable and intangibles).
 
     "Total Unencumbered Assets" means the sum of (i) those Undepreciated Real
Estate Assets not subject to an Encumbrance and (ii) all other assets of the
Trust and its Subsidiaries not subject to an Encumbrance determined in
accordance with generally accepted accounting principles (but excluding accounts
receivable and intangibles).
 
     "Undepreciated Real Estate Assets" as of any date means the cost (original
cost plus capital improvements) of real estate assets of the Trust and its
Subsidiaries on such date, before depreciation and amortization, determined on a
consolidated basis in accordance with generally accepted accounting principles.
 
     "Unsecured Debt" means Debt of the Trust or any Subsidiary which is not
secured by any mortgage, lien, charge, pledge or security interest of any kind
upon any of the properties owned by the Trust or any of its Subsidiaries.
 
     Existence.  Except as permitted under "-- Merger, Consolidation or Sale,"
the Trust will be required to do or cause to be done all things necessary to
preserve and keep in full force and effect its existence, rights and franchises;
provided, however, that the Trust shall not be required to preserve any right or
franchise if it determines that the preservation thereof is no longer desirable
in the conduct of its business (Section 1004).
 
     Maintenance of Properties.  The Trust will be required to cause all of its
material properties used or useful in the conduct of its business or the
business of any Subsidiary to be maintained and kept in good condition, repair
and working order and supplied with all necessary equipment and will cause to be
made all necessary repairs, renewals, replacements, betterments and improvements
thereof, all as in the judgment of the Trust may be necessary so that the
business carried on in connection therewith may be properly and advantageously
conducted at all times (Section 1005).
 
     Insurance.  The Trust will be required to, and will be required to cause
each of its Subsidiaries to, keep all of its insurable properties insured
against loss or damage at least equal to their then full insurable value with
insurers of recognized responsibility and, if described in the applicable
Prospectus Supplement, having a specified rating from a recognized insurance
rating service (Section 1006).
 
     Payment of Taxes and Other Claims.  The Trust will be required to pay or
discharge or cause to be paid or discharged, before the same shall become
delinquent, (i) all taxes, assessments and governmental charges levied or
imposed upon it or any Subsidiary or upon the income, profits or property of the
Trust or any Subsidiary, and (ii) all lawful claims for labor, materials and
supplies, which, if unpaid, might by law become a material lien upon the
property of the Trust or any Subsidiary; provided, however, that the Trust shall
not be required to pay or discharge or cause to be paid or discharged any such
tax, assessment, charge or claim whose amount, applicability or validity is
being contested in good faith (Section 1007).
 
     Provision of Financial Information.  Whether or not the Trust is subject to
Section 13 or 15(d) of the Exchange Act, the Trust will be required, within 15
days of each of the respective dates by which the Trust would have been required
to file annual reports, quarterly reports and other documents with the
Commission if the Trust were so subject, to (i) transmit by mail to all holders
of Securities, as their names and addresses appear in the applicable register
for such Securities, without cost to such holders, copies of the annual reports,
quarterly reports and other documents that the Trust would have been required to
file with the Commission
 
                                        9
<PAGE>   11
 
pursuant to Section 13 or 15(d) of the Exchange Act if the Trust were subject to
such sections, (ii) file with the Indenture Trustee copies of the annual
reports, quarterly reports and other documents that the Trust would have been
required to file with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act if the Trust were subject to such Sections, and (iii) promptly upon
written request and payment of the reasonable cost of duplication and delivery,
supply copies of such documents to any prospective holder (Section 1008).
 
     Additional Covenants.  Any additional covenants of the Trust with respect
to any series of Securities will be set forth in the Prospectus Supplement
relating thereto.
 
EVENTS OF DEFAULT, NOTICE AND WAIVER
 
     The Indenture provides that the following events are "Events of Default"
with respect to any series of Securities issued thereunder: (a) default for 30
days in the payment of any installment of interest on any Security of such
series; (b) default in the payment of principal of (or premium, if any, on) any
Security of such series at its maturity; (c) default in making any sinking fund
payment as required for any Security of such series; (d) default in the
performance or breach of any other covenant or warranty of the Trust contained
in the Indenture (other than a covenant added to the Indenture solely for the
benefit of a series of Securities issued thereunder other than such series),
continued for 60 days after written notice as provided in the Indenture; (e) a
default under any bond, debenture, note or other evidence of indebtedness for
money borrowed by the Trust (including obligations under leases required to be
capitalized on the balance sheet of the lessee under generally accepted
accounting principles but not including any indebtedness or obligations for
which recourse is limited to property purchased) in an aggregate principal
amount in excess of $5,000,000 or under any mortgage, indenture or instrument
under which there may be issued or by which there may be secured or evidenced
any indebtedness for money borrowed by the Trust (including such leases, but not
including such indebtedness or obligations for which recourse is limited to
property purchased) in an aggregate principal amount in excess of $5,000,000,
whether such indebtedness now exists or shall hereafter be created which default
shall have resulted in such indebtedness becoming or being declared due and
payable prior to the date on which it would otherwise have become due and
payable or such obligations being accelerated, without such acceleration having
been rescinded or annulled; (f) certain events of bankruptcy, insolvency or
reorganization, or court appointment of a receiver, liquidator or trustee of the
Trust or any Significant Subsidiary of the Trust; and (g) any other event of
default provided with respect to a particular series of Securities (Section
501). The term "Significant Subsidiary" means each significant subsidiary (as
defined in Regulation S-X promulgated under the Securities Act) of the Trust.
 
     If an Event of Default under the Indenture with respect to Securities of
any series at the time outstanding occurs and is continuing, then in every such
case the Indenture Trustee or the holders of not less than 25% in principal
amount of the outstanding Securities of that series will have the right to
declare the principal amount (or, if the Securities of that series are Original
Issue Discount Securities or Indexed Securities, such portion of the principal
amount as may be specified in the terms thereof) of all the Securities of that
series to be due and payable immediately by written notice thereof to the Trust
(and to the Indenture Trustee if given by the holders). However, at any time
after such a declaration of acceleration with respect to Securities of such
series (or of all Securities then outstanding under any Indenture, as the case
may be) has been made, but before a judgment or decree for payment of the money
due has been obtained by the Indenture Trustee, the holders of not less than a
majority in principal amount of outstanding Securities of such series (or of all
Securities then outstanding under the Indenture, as the case may be) may rescind
and annul such declaration and its consequences if (a) the Trust shall have
deposited with the Indenture Trustee all required payments of the principal of
(and premium, if any) and interest on the Securities of such series (or of all
Securities then outstanding under the Indenture, as the case may be), plus
certain fees, expenses, disbursements and advances of the Indenture Trustee and
(b) all Events of Default, other than the non-payment of accelerated principal
(or specified portion thereof), with respect to Securities of such series (or of
all Securities then outstanding under the Indenture, as the case may be) have
been cured or waived as provided in the Indenture (Section 502). The Indenture
also provides that the holders of not less than a majority in principal amount
of the outstanding Securities of any series (or of all Securities then
outstanding under the Indenture, as the case may be) may waive any past default
with respect to such series and its consequences, except a default (x) in
 
                                       10
<PAGE>   12
 
the payment of the principal of (or premium, if any) or interest on any Security
of such series or (y) in respect of a covenant or provision contained in the
Indenture that cannot be modified or amended without the consent of the holder
of each outstanding Security affected thereby (Section 513).
 
     The Indenture Trustee will be required to give notice to the holders of
Securities within 90 days of a default under the Indenture unless such default
shall have been cured or waived; provided, however, that such Indenture Trustee
may withhold notice to the holders of any series of Securities of any default
with respect to such series (except a default in the payment of the principal of
(or premium, if any) or interest on any Security of such series or in the
payment of any sinking fund installment in respect of any Security of such
series) if specified responsible officers of such Indenture Trustee consider
such withholding to be in the interest of such holders (Section 601).
 
     The Indenture provides that no holders of Securities of any series may
institute any proceedings, judicial or otherwise, with respect to such Indenture
or for any remedy thereunder, except in the cases of failure of the Indenture
Trustee, for 60 days, to act after it has received a written request to
institute proceedings in respect of an event of default from the holders of not
less than 25% in principal amount of the outstanding Securities of such series,
as well as an offer of indemnity reasonably satisfactory to it (Section 507).
This provision will not prevent, however, any holder of Securities from
instituting suit for the enforcement of payment of the principal of (and
premium, if any) and interest on such Securities at the respective due dates
thereof.
 
     Subject to provisions in the Indenture relating to its duties in case of
default, the Indenture Trustee will not be under any obligation to exercise any
of its rights or powers under the Indenture at the request or direction of any
holders of any series of Securities then outstanding under such Indenture,
unless such holders shall have offered to the Indenture Trustee thereunder
reasonable security or indemnity (Section 602). The holders of not less than a
majority in principal amount of the outstanding Securities of any series (or of
all Securities then outstanding under the Indenture, as the case may be) shall
have the right to direct the time, method and place of conducting any proceeding
for any remedy available to the Indenture Trustee, or of exercising any trust or
power conferred upon such Indenture Trustee. However, an Indenture Trustee may
refuse to follow any direction which is in conflict with any law or the
Indenture, which may involve the Indenture Trustee in personal liability or
which may be unduly prejudicial to the holders of Securities of such series not
joining therein (Section 512).
 
     Within 120 days after the close of each fiscal year, the Trust will be
required to deliver to the Indenture Trustee a certificate, signed by one of
several specified officers of the Trust, stating whether or not such officer has
knowledge of any default under the Indenture and, if so, specifying each such
default and the nature and status thereof (Section 1009).
 
MODIFICATION OF THE INDENTURE
 
     Modifications and amendments of the Indenture will be permitted to be made
only with the consent of the holders of not less than a majority in principal
amount of all outstanding Securities issued under the Indenture which are
affected by such modification or amendment; provided, however, that no such
modification or amendment may, without the consent of the holder of each such
Security affected thereby, (a) change the stated maturity of the principal of,
or any installment of interest (or premium, if any) on, any such Security; (b)
reduce the principal amount of, or the rate or amount of interest on, or any
premium payable on redemption of, any such Security, or reduce the amount of
principal of an Original Issue Discount Security that would be due and payable
upon declaration of acceleration of the maturity thereof or would be provable in
bankruptcy, or adversely affect any right of repayment of the holder of any such
Security; (c) change the place of payment, or the coin or currency, for payment
of principal of, premium, if any, or interest on any such Security; (d) impair
the right to institute suit for the enforcement of any payment on or with
respect to any such Security; (e) reduce the above-stated percentage of
outstanding Securities of any series necessary to modify or amend the Indenture,
to waive compliance with certain provisions thereof or certain defaults and
consequences thereunder or to reduce the quorum or voting requirements set forth
in the Indenture; or (f) modify any of the foregoing provisions or any of the
provisions relating to the waiver of certain past defaults or certain covenants,
except to increase the required percentage to effect such action or to
 
                                       11
<PAGE>   13
 
provide that certain other provisions may not be modified or waived without the
consent of the holder of such Security (Section 902).
 
     The holders of not less than a majority in principal amount of outstanding
Securities issued under the Indenture will have the right to waive compliance by
the Trust with certain covenants in the Indenture (Section 1013).
 
     Modifications and amendments of the Indenture will be permitted to be made
by the Trust and the Indenture Trustee thereunder without the consent of any
holder of Securities for any of the following purposes: (i) to evidence the
succession of another person to the Trust as obligor under the Indenture; (ii)
to add to the covenants of the Trust for the benefit of the holders of all or
any series of Securities or to surrender any right or power conferred upon the
Trust in the Indenture; (iii) to add events of default for the benefit of the
holders of all or any series of Securities; (iv) to add or change any provisions
of the Indenture to facilitate the issuance of, or to liberalize certain terms
of, Securities in bearer form, or to permit or facilitate the issuance of
Securities in uncertificated form, provided that such action shall not adversely
affect the interests of the holders of the Securities of any series in any
material aspect; (v) to change or eliminate any provisions of the Indenture,
provided that any such change or elimination shall become effective only when
there are no Securities outstanding of any series created prior thereto which
are entitled to the benefit of such provision; (vi) to secure the Securities;
(vii) to establish the form or terms of Securities of any series; (viii) to
provide for the acceptance of appointment by a successor Indenture Trustee or
facilitate the administration of the trusts under the Indenture by more than one
Indenture Trustee; (ix) to cure any ambiguity, defect or inconsistency in the
Indenture, provided that such action shall not adversely affect the interests of
holders of Securities of any series issued under such Indenture in any material
respect; or (x) to supplement any of the provisions of the Indenture to the
extent necessary to permit or facilitate defeasance and discharge of any series
of such Securities, provided that such action shall not adversely affect the
interests of the holders of the Securities of any series in any material respect
(Section 901).
 
     The Indenture will provide that in determining whether the holders of the
requisite principal amount of outstanding Securities of a series have given any
request, demand, authorization, direction, notice, consent or waiver thereunder
or whether a quorum is present at a meeting of holders of Securities, (i) the
principal amount of an Original Issue 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 declaration of
acceleration of the maturity thereof, (ii) the principal amount of any Security
denominated in a foreign currency that shall be deemed outstanding shall be the
U.S. dollar equivalent, determined on the issue date for such Security, of the
principal amount (or, in the case of Original Issue Discount Security, the U.S.
dollar equivalent on the issue date of such Security of the amount determined as
provided in (i) above), (iii) the principal amount of an Indexed Security that
shall be deemed outstanding shall be the principal face amount of such Indexed
Security at original issuance, unless otherwise provided with respect to such
indexed security pursuant to Section 301 of the Indenture, and (iv) Securities
owned by the Trust or any other obligor upon the Securities or any affiliate of
the Trust or of such other obligor shall be disregarded (Section 101).
 
     The Indenture contains provisions for convening meetings of the holders of
Securities of a series (Section 1501). A meeting will be permitted to be called
at any time by the Indenture Trustee, and also, upon request, by the Trust or
the holders of at least 10% in principal amount of the outstanding Securities of
such series, in any such case upon notice given as provided in the Indenture
(Section 1502). Except for any consent that must be given by the holder of each
Security affected by certain modifications and amendments of the Indenture, any
resolution presented at a meeting or adjourned meeting duly reconvened 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 Securities of that series;
provided, however,that, except as referred to above, any resolution with respect
to any request, demand, authorization, direction, notice, consent, waiver or
other action that 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 Securities of a series may be adopted at a meeting or adjourned
meeting or adjourned meeting duly reconvened at which a quorum is present by the
affirmative vote of the holders of such specified percentage in principal amount
of the outstanding Securities of that series. Any resolution passed or decision
taken at any meeting of holders of Securities of any series duly held in
accordance with the Indenture
 
                                       12
<PAGE>   14
 
will be binding on all holders of Securities of that series. The quorum at any
meeting called to adopt a resolution, and at any reconvened meeting, will be
persons holding or representing a majority in principal amount of the
outstanding Securities of a 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 specified percentage in principal amount of
the outstanding Securities of a series, the persons holding or representing such
specified percentage in principal amount of the outstanding Securities of such
series will constitute a quorum (Section 1504).
 
     Notwithstanding the foregoing provisions, the Indenture provides that if
any action is to be taken at a meeting of holders of Securities of any series
with respect to any request, demand, authorization, direction, notice, consent,
waiver and other action that the Indenture expressly provides may be made, given
or taken by the holders of a specified percentage in principal amount of all
outstanding Securities affected thereby, or of the holders of such series and
one or more additional series: (i) there shall be no minimum quorum requirement
for such meeting, and (ii) the principal amount of the outstanding Securities of
such series that vote in favor of such request, demand, authorization,
direction, notice, consent, waiver or other action shall be taken into account
in determining whether such request, demand, authorization, direction, notice,
consent, waiver or other action has been made, given or taken under the
Indenture (Section 1504).
 
DISCHARGE, DEFEASANCE AND COVENANT DEFEASANCE
 
     The Trust may be permitted under the Indenture to discharge certain
obligations to holders of any series of Securities issued thereunder that have
not already been delivered to the Indenture Trustee for cancellation and that
either have become due and payable or will become due and payable within one
year (or scheduled for redemption within one year) by irrevocably depositing
with the Indenture Trustee, in trust, funds in such currency in which such
Securities are payable in an amount sufficient to pay the entire indebtedness on
such Securities in respect of principal (and premium, if any) and interest to
the date of such deposit (if such Securities have become due and payable) or to
the stated maturity or redemption date, as the case may be (Section 401).
 
     The Indenture provides that, if the provisions of Article Fourteen are made
applicable to the Securities of or within any series pursuant to Section 301 of
the Indenture, the Trust may elect either (a) to defease and be discharged from
any and all obligations with respect to such Securities (except for the
obligation to pay additional amounts, if any, upon the occurrence of certain
events of tax, assessment or governmental charge with respect to payments on
such Securities and the obligations to register the transfer or exchange of such
Securities, to replace temporary or mutilated, destroyed, lost or stolen
Securities, to maintain an office or agency in respect of such Securities and to
hold moneys for payment in trust) ("defeasance") (Section 1402) or (b) to be
released from its obligations with respect to such Securities under Sections
1004 to 1008, inclusive, and Sections 1011 and 1012 under the Indenture (being
the restrictions described under "-- Certain Covenants") or, if provided
pursuant to the Indenture, its obligations with respect to any other covenant,
and any omission to comply with such obligations shall not constitute an event
of default with respect to such Securities ("covenant defeasance") (Section
1403), in either case upon the irrevocable deposit by the Trust with the
Indenture Trustee, in trust, of an amount, in such currency in which such
Securities are payable at stated maturity, or Government Obligations (as defined
below), or both, applicable to such Securities which through the scheduled
payment of principal and interest in accordance with their terms will provide
money in an amount sufficient to pay the principal of (and premium, if any) and
interest on such Securities, and any mandatory sinking fund or analogous
payments thereon, on the scheduled due dates therefor (Section 1404).
 
     Such a trust will only be permitted to be established if, among other
things, the Trust has delivered to the Indenture Trustee an opinion of counsel
(as specified in the Indenture) to the effect that the holders of such
Securities will not recognize income, gain or loss for U.S. federal income tax
purposes as a result of such defeasance or covenant defeasance and will be
subject to U.S. federal income tax on the same amounts, in the same manner and
at the same times as would have been the case if such defeasance or covenant
defeasance had not occurred, and such opinion of counsel, in the case of
defeasance, will be required to refer to and be based upon a ruling of the
Internal Revenue Service or a change in applicable United States federal income
tax law occurring after the date of the Indenture (Section 1404).
 
                                       13
<PAGE>   15
 
     "Government Obligations" means securities which are (i) direct obligations
of the United States of America or the government which issued the foreign
currency in which the Securities of a particular series are payable for the
payment of which its full faith and credit is pledged or (ii) obligations of a
person controlled or supervised by and acting as an agency or instrumentality of
the United States of America or the government which issued the foreign currency
in which the Securities of a particular series are payable, the payment of which
is unconditionally guaranteed as a full faith and credit obligation by the
United States of America or such other government, which, in either case, are
not callable or redeemable at the option of the issuer thereof, and shall also
include a depository receipt issued by a bank or trust company as custodian with
respect to any such Government Obligation or a specific payment of interest on
or principal of any such Government Obligation held by such custodian for the
account of the holder of a depository receipt, provided that (except as required
by law) such custodian is not authorized to make any deduction from the amount
payable to the holder of such depository receipt from any amount receiving by
the custodian in respect of the Government Obligation or the specific payment of
interest on or principal of the Government Obligation evidenced by such
depository receipt (Section 101).
 
     Unless otherwise provided in the applicable Prospectus Supplement, if after
the Trust has deposited funds and/or Government Obligations to effect defeasance
or covenant defeasance with respect to Securities of any series, (a) the holder
of a Security of such series is entitled to, and does, elect pursuant to Section
301 of the Indenture or the terms of such Security to receive payment in a
currency, currency unit or composite currency other than that in which such
deposit has been made in respect of such Security, or (b) a Conversion Event (as
defined below) occurs in respect of the currency, currency unit or composite
currency in which such deposit has been made, the indebtedness represented by
such Security shall be deemed to have been, and will be, fully discharged and
satisfied through the payment of the principal of (and premium, if any) and
interest on such Security as they become due out of the proceeds yielded by
converting the amount so deposited in respect of such Security into the
currency, currency unit or composite currency in which such Security becomes
payable as a result of such election or such cessation of usage based on the
applicable market exchange rate (Section 1405). "Conversion Event" means the
cessation of use of (i) a currency, currency unit or composite currency both by
the government of the country which issued such currency and for the settlement
of transactions by a central bank or other public institutions of or within the
international banking community, (ii) the ECU both within the European Monetary
System and for the settlement of transactions by public institutions of or
within the European Communities or (iii) any currency unit or composite currency
other than the ECU for the purposes for which it was established. Unless
otherwise provided in the applicable Prospectus Supplement, all payments of
principal of (and premium, if any) and interest on any Security that is payable
in a foreign currency that ceases to be used by its government of issuance shall
be in U.S. dollars (Section 101).
 
     In the event the Trust effects covenant defeasance with respect to any
Securities and such Securities are declared due and payable because of the
occurrence of any event of default other than the event of default described in
clause (d) under "Events of Default, Notice and Waiver" with respect to Sections
1004 to 1008, inclusive, and Sections 1011 and 1012 of the Indenture (which
sections would no longer be applicable to such Securities) or described in
clause (g) under "Events of Default, Notice and Waiver" with respect to any
other covenant as to which there has been covenant defeasance, the amount in
such currency in which such Securities are payable, and Government Obligations
on deposit with the Indenture Trustee, will be sufficient to pay amounts due on
such Securities at the time of their stated maturity but may not be sufficient
to pay amounts due on such Securities at the time of the acceleration resulting
from such event of default. However, the Trust would remain liable to make
payment of such amounts due at the time of acceleration.
 
     The applicable Prospectus Supplement may further describe the provisions,
if any, permitting such defeasance or covenant defeasance, including any
modifications to the provisions described above, with respect to the Securities
of or within a particular series.
 
GLOBAL SECURITIES
 
     The Securities of a series may be issued in whole or in part in the form of
one or more global securities (the "Global Securities") that will be deposited
with, or on behalf of, a depositary identified in the applicable
 
                                       14
<PAGE>   16
 
Prospectus Supplement relating to such series. Global Securities may be issued
in either registered or bearer form and in either temporary or permanent form.
The specific terms of the depositary arrangement with respect to a series of
Securities will be described in the applicable Prospectus Supplement relating to
such series.
 
                           ORGANIZATION OF THE TRUST
 
     The Trust was founded in 1960 as a District of Columbia unincorporated
business trust. The Trust's Declaration of Trust currently provides that no
shareholder shall be personally liable in connection with the Trust's property
or the affairs of the Trust. The Declaration of Trust further provides that the
Trust shall indemnify and hold harmless shareholders against all claims and
liabilities and related reasonable expenses to which they become subject by
reason of their being or having been shareholders. In addition, the Trust as a
matter of practice inserts a clause in its business, management and other
contracts which provides that shareholders shall not be personally liable
thereunder.
 
     The trustees of the Trust have approved and have submitted to the
shareholders for a vote at the Trust's annual meeting to be held on June 20,
1996 a proposal to reorganize the Trust as a Maryland unincorporated business
trust. If approved by a majority of the shareholders, the Trust will merge into
a Maryland unincorporated business trust newly formed for the purpose of the
reorganization ("Maryland WRIT"), and Maryland WRIT will succeed to all of the
business, properties, assets and liabilities of the Trust. The Declaration of
Trust of Maryland WRIT is similar to that of the Trust, but Maryland law, among
other things, expressly permits the limitation of liability of the Trust's
trustees and officers, expressly provides for the indemnification of the Trust's
trustees, officers and employees and expressly provides that shareholders are
not personally liable for the obligations of the Trust.
 
     The Trust has elected to be taxed as a real estate investment trust under
the Internal Revenue Code. Real estate investment trusts which meet certain
qualifications are relieved of federal income taxes on ordinary income and
capital gains distributed to shareholders.
 
                              PLAN OF DISTRIBUTION
 
     The Trust may sell Securities to or through underwriters, and also may sell
Securities directly to other purchasers or through agents.
 
     The distribution of the Securities may be effected from time to time in one
or more transactions at a fixed price or prices, which may be changed, or at
market prices prevailing at the time of sale, at prices related to such
prevailing market prices or at negotiated prices.
 
     In connection with the sale of Securities, underwriters may receive
compensation from the Trust or from purchasers of Securities, for whom they may
act as agents, in the form of discounts, concessions, or commissions.
Underwriters may sell Securities to or through dealers, and such dealers may
receive compensation in the form of discounts, concessions, or commissions from
the underwriters and/or commissions from the purchasers for whom they may act as
agents. Underwriters, dealers, and agents that participate in the distribution
of Securities may be deemed to be underwriters, and any discounts or commissions
they receive from the Trust, and any profit on the resale of Securities they
realize may be deemed to be underwriting discounts and commissions, under the
Securities Act. Any such underwriter or agent will be identified, and any such
compensation received from the Trust will be described, in the Prospectus
Supplement.
 
                                       15
<PAGE>   17
 
     Unless otherwise specified in the related Prospectus Supplement, each
series of Securities will be a new issue with no established trading market. The
Trust may elect to list any series of Securities on an exchange, but is not
obligated to do so. It is possible that one or more underwriters may make a
market in a series of Securities, but will not be obligated to do so and may
discontinue any market making at any time without notice. Therefore, no
assurance can be given as to the liquidity of the trading market for the
Securities.
 
     Under agreements the Trust may enter into, underwriters, dealers, and
agents who participate in the distribution of Securities may be entitled to
indemnification by the Trust against certain liabilities, including liabilities
under the Securities Act.
 
     Underwriters, dealers and agents may engage in transactions with, or
perform services for, or be customers of, the Trust in the ordinary course of
business.
 
                                 LEGAL OPINIONS
 
     The legality of the Securities offered hereby is being passed upon for the
Trust by Arent Fox Kintner Plotkin & Kahn, Washington, D.C. David M. Osnos, a
trustee of the Trust, is a partner of Arent Fox Kintner Plotkin & Kahn. Andrews
& Kurth L.L.P., Washington, D.C., will act as counsel to any underwriters,
dealers or agents.
 
                                    EXPERTS
 
     The financial statements incorporated in this Prospectus by reference to
the Trust's Annual Report on Form 10-K for the year ended December 31, 1995 have
been so incorporated in reliance on the report of Price Waterhouse LLP,
independent accountants, given on the authority of said firm as experts in
auditing and accounting.
 
                                       16
<PAGE>   18
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
     The following table sets forth the expenses in connection with the issuance
and distribution of the Securities being registered, other than underwriting
discounts and commissions:
 
<TABLE>
    <S>                                                                           <C>
    Registration fee -- Securities and Exchange Commission.....................   $34,483
    Blue Sky fees and expenses (including counsel fees)*.......................
    Rating agencies fees*......................................................
    Trustee's fees (including counsel fees)*...................................
    Accounting fees and expenses*..............................................
    Legal fees and expenses*...................................................
    Printing and engraving expenses*...........................................
    Miscellaneous expenses*....................................................
                                                                                  -------
              Total............................................................   $
                                                                                  =======
</TABLE>
 
- ---------------
* To be completed by amendment.
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
     The Declaration of Trust provides that no Trustee or officer of the
Registrant shall be personally liable, in tort, contract or otherwise, in
connection with the Registrant's property or the affairs of the Registrant, or
on account of his own acts or omissions to the Registrant, or to any
shareholder, Trustee, officer or agent thereof except for (i) any breach of the
duty of loyalty of the Trustee or the officer to the Registrant or its
shareholders, (ii) acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, or (iii) any transaction
from which the Trustee or officer derived any improper personal benefit. All
persons shall look solely to the Registrant's property for satisfaction of
claims of any nature in connection with the affairs of the Registrant.
 
ITEM 16. EXHIBITS
 
<TABLE>
<S>     <C>
 1.       -- Form of Underwriting Agreement
 4.       -- Instruments defining the rights of security holders
   (a)    -- Form of Indenture relating to Securities to be entered into by the Registrant and
             The First National Bank of Chicago, as trustee
   (b)    -- Form of Securities*
 5.       -- Opinion of Arent Fox Kintner Plotkin & Kahn re: validity of securities registered*
12.       -- Statements re computation of ratios
23.       -- Consents of experts and counsel
   (a)    -- Consent of Price Waterhouse
   (b)    -- Consent of Arent Fox Kintner Plotkin & Kahn (counsel): included in exhibit 5
24.       -- Power of attorney: included on signature page
25.       -- Statement of eligibility of trustee
   (a)    -- Statement of eligibility of The First National Bank of Chicago, as trustee
</TABLE>
 
- ---------------
* To be filed by amendment or incorporated by reference in connection with the
  offering of the offered Securities.
 
                                      II-1
<PAGE>   19
 
ITEM 17. UNDERTAKINGS
 
     (a) The Registrant hereby undertakes:
 
          (1) To file, during any period in which offers or sales are being made
     of the securities registered hereby, a post-effective amendment to this
     Registrant 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 this Registration Statement. Notwithstanding the foregoing, any
        increase or decrease in 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% change in the
        maximum aggregate 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 this Registration Statement
        or any material change to such information in this Registration
        Statement;
 
provided, however, that the undertakings set forth in paragraphs (1)(i) and
(1)(ii) above do not apply if the information required to be included in a
post-effective amendment by those paragraphs is contained in periodic reports
filed by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange
Act that are incorporated by reference in this Registration Statement.
 
          (2) That, for the purpose of determining any liability under the
     Securities Act, each such post-effective amendment 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.
 
          (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.
 
     (b) The Registrant hereby further undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or 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.
 
     (c) Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Commission such indemnification is
against public policy as expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the Registrant of expenses incurred or
paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant, unless in the opinion of its counsel the matter has
been settled by controlling precedent, will submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.
 
                                      II-2
<PAGE>   20
 
                                   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 on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Kensington, State of Maryland, on the 12th day of
June, 1996.
 
                                          WASHINGTON REAL ESTATE INVESTMENT
                                          TRUST
 
                                          By:    /s/ EDMUND B. CRONIN, JR.
 
                                          --------------------------------------
                                                    EDMUND B. CRONIN, JR.
                                                PRESIDENT AND CHIEF EXECUTIVE
                                                         OFFICER
 
                                      II-3
<PAGE>   21
 
                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS that each person whose signature appears
below constitutes and appoints Edmund B. Cronin, Jr. and Larry E. Finger, and
each of them his true and lawful attorney-in-fact and agent with power of
substitution and resubstitution, for him, and in his name, place and stead, in
any and all capacities, to sign any and all amendments (including post effective
amendments) to this Registration Statement on Form S-3, and to file the same,
with all exhibits thereto, and all documents in connection therewith, with the
Commission, granting unto said attorney-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done to comply with the provisions of the
Securities Act and all requirements of the Commission, hereby ratifying and
confirming all that said attorney-in-fact or any of them, or their or his or her
substitutes, may lawfully do or cause to be done by virtue hereof.
 
     Pursuant to the requirements of the Securities Act, this Registration
Statement has been signed below by the following persons in the capacities and
on the date indicated:
 
<TABLE>
<CAPTION>
                SIGNATURE                                  TITLE                      DATE
- ------------------------------------------    -------------------------------    --------------
<S>                                           <C>                                <C>
/s/  ARTHUR A. BIRNEY                         Chairman of the Trustees           June 12, 1996
- ------------------------------------------
Arthur A. Birney

/s/  WILLIAM N. CAFRITZ                       Trustee                            June 12, 1996
- ------------------------------------------
William N. Cafritz

/s/  EDMUND B. CRONIN, JR.                    Trustee, President and Chief       June 12, 1996
- ------------------------------------------    Executive Officer
Edmund B. Cronin, Jr.

/s/  BENJAMIN H. DORSEY                       Trustee                            June 12, 1996
- ------------------------------------------
Benjamin H. Dorsey

/s/  LARRY E. FINGER                          Senior Vice President and Chief    June 12, 1996
- ------------------------------------------    Financial Officer (Principal
Larry E. Finger                               Accounting Officer)

/s/  B. FRANKLIN KAHN                         Trustee                            June 12, 1996
- ------------------------------------------
B. Franklin Kahn

/s/  DAVID M. OSNOS                           Trustee                            June 12, 1996
- ------------------------------------------
David M. Osnos

/s/  STANLEY P. SNYDER                        Trustee                            June 12, 1996
- ------------------------------------------
Stanley P. Snyder
</TABLE>
 
                                      II-4

<PAGE>   1

                                                                           DRAFT
                                                                          6/7/96

                    WASHINGTON REAL ESTATE INVESTMENT TRUST
                    (a District of Columbia business trust)



                                Debt Securities




                             UNDERWRITING AGREEMENT



                                                                   June __, 1996


MERRILL LYNCH & CO.
Merrill Lynch, Pierce, Fenner & Smith
         Incorporated
North Tower
World Financial Center
New York, New York  10281-1209

Ladies and Gentlemen:

         Washington Real Estate Investment Trust, a real estate investment
trust organized under the laws of the District of Columbia (the "Company"),
proposes to issue and sell debt securities (the "Debt Securities"), from time
to time, in one or more offerings on terms to be determined at the time of
sale.  The Debt Securities will be issued under an indenture, dated as of June
1, 1996 (the "Indenture"), between the Company and The First National Bank of
Chicago, as trustee (the "Indenture Trustee").  Each series of Debt Securities
may vary, as applicable, as to title, aggregate principal amount, interest rate
or formula and timing of payments thereof, stated maturity date, redemption
and/or repayment provisions, sinking fund requirements, and any other variable
terms established by or pursuant to the Indenture.

         Whenever the Company determines to make an offering of Debt Securities
through Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated
("Merrill Lynch"), or through an underwriting syndicate managed by Merrill
Lynch, the Company will enter into an
<PAGE>   2
agreement (each, a "Terms Agreement") providing for the sale of such Debt
Securities (the "Underwritten Securities") to, and the purchase and offering
thereof by, Merrill Lynch and such other underwriters, if any, selected by
Merrill Lynch (the "Underwriters", which term shall include Merrill Lynch,
whether acting as sole Underwriter or as a member of an underwriting syndicate,
as well as any Underwriter substituted pursuant to Section 10 hereof).  The
Terms Agreement relating to the offering of Underwritten Securities shall
specify the aggregate principal amount of Underwritten Securities to be
initially issued (the "Initial Underwritten Securities"), the name of each
Underwriter participating in such offering (subject to substitution as provided
in Section 10 hereof) and the name of any Underwriter other than Merrill Lynch
acting as co-manager in connection with such offering, the aggregate principal
amount of Initial Underwritten Securities which each such Underwriter severally
agrees to purchase, whether such offering is on a fixed or variable price basis
and, if on a fixed price basis, the initial offering price, the price at which
the Initial Underwritten Securities are to be purchased by the Underwriters,
the form, time, date and place of delivery and payment of the Initial
Underwritten Securities and any other material variable terms of the Initial
Underwritten Securities.  In addition, if applicable, such Terms Agreement
shall specify whether the Company has agreed to grant to the Underwriters an
option to purchase additional Underwritten Securities to cover over-allotments,
if any, and the aggregate principal amount of Underwritten Securities subject
to such option (the "Option Underwritten Securities").  As used herein, the
term "Underwritten Securities" shall include the Initial Underwritten
Securities and all or any portion of any Option Underwritten Securities.  The
Terms Agreement, which shall be substantially in the form of Exhibit A hereto,
may take the form of an exchange of any standard form of written
telecommunication between the Company and Merrill Lynch, acting for itself and,
if applicable, as representative of any other Underwriters.  Each offering of
Underwritten Securities through Merrill Lynch as sole Underwriter or through an
underwriting syndicate managed by Merrill Lynch will be governed by this
Underwriting Agreement, as supplemented by the applicable Terms Agreement.

         The Company has filed with the Securities and Exchange Commission (the
"Commission") a registration statement on Form S-3 (No. 333-_________) [and
pre-effective amendment[s] no[s]. ______  thereto] for the registration of the
Debt Securities under the Securities Act of 1933, as amended (the "1933 Act"),
and the offering thereof from time to time in accordance with Rule 415 of the
rules and regulations of the Commission under the 1933 Act (the "1933 Act
Regulations"), and the Company has filed such post-effective amendments thereto
as may be required prior to the execution of the applicable Terms Agreement.
Such registration statement (as so amended, if applicable) has been declared
effective by the Commission and the Indenture has been duly qualified under the
Trust Indenture Act of 1939, as amended (the "1939 Act").  Such registration
statement (as so amended, if applicable), including the information, if any,
deemed to be a part thereof pursuant to Rule 430A(b) of the 1933 Act
Regulations (the "Rule 430A Information") or Rule 434(d) of the 1933 Act
Regulations (the "Rule 434 Information"), is referred to herein as the
"Registration Statement"; and the final prospectus and the final prospectus
supplement relating to the offering of the Underwritten Securities, in the form
first furnished to the Underwriters by the Company for use in connection





                                       2
<PAGE>   3
with the offering of the Underwritten Securities, are collectively referred to
herein as the "Prospectus"; provided, however, that all references to the
"Registration Statement" and the "Prospectus" shall also be deemed to include
all documents incorporated therein by reference pursuant to the Securities
Exchange Act of 1934, as amended (the "1934 Act"), prior to the execution of
the applicable Terms Agreement; provided, further, that if the Company files a
registration statement with the Commission pursuant to Rule 462(b) of the 1933
Act Regulations (the "Rule 462 Registration Statement"), then, after such
filing, all references to "Registration Statement" shall also be deemed to
include the Rule 462 Registration Statement; and provided, further, that if the
Company elects to rely upon Rule 434 of the 1933 Act Regulations, then all
references to "Prospectus" shall also be deemed to include the final or
preliminary prospectus and the applicable term sheet or abbreviated term sheet
(the "Term Sheet"), as the case may be, in the form first furnished to the
Underwriters by the Company in reliance upon Rule 434 of the 1933 Act
Regulations, and all references in this Underwriting Agreement to the date of
the Prospectus shall mean the date of the Term Sheet.  A "preliminary
prospectus" shall be deemed to refer to any prospectus used before the
registration statement became effective and any prospectus that omitted, as
applicable, the Rule 430A Information, the Rule 434 Information or other
information to be included upon pricing in a form of prospectus filed with the
Commission pursuant to Rule 424(b) of the 1933 Act Regulations, that was used
after such effectiveness and prior to the execution and delivery of the
applicable Terms Agreement.  For purposes of this Underwriting Agreement, all
references to the Registration Statement, Prospectus, Term Sheet or preliminary
prospectus or to any amendment or supplement to any of the foregoing shall be
deemed to include any copy filed with the Commission pursuant to its Electronic
Data Gathering, Analysis and Retrieval system ("EDGAR").

         All references in this Underwriting Agreement to financial statements
and schedules and other information which is "contained," "included" or
"stated" (or other references of like import) in the Registration Statement,
Prospectus or preliminary prospectus shall be deemed to mean and include all
such financial statements and schedules and other information which is
incorporated by reference in the Registration Statement, Prospectus or
preliminary prospectus, as the case may be; and all references in this
Underwriting Agreement to amendments or supplements to the Registration
Statement, Prospectus or preliminary prospectus shall be deemed to mean and
include the filing of any document under the 1934 Act which is incorporated by
reference in the Registration Statement, Prospectus or preliminary prospectus,
as the case may be.

         SECTION 1.  Representations and Warranties.

         (a)  The Company represents and warrants to Merrill Lynch, as of the
date hereof, and to each Underwriter named in the applicable Terms Agreement,
as of the date thereof, as of the Closing Time (as defined below) and, if
applicable, as of each Date of Delivery (as defined below) (in each case, a
"Representation Date"), as follows:

             (1)  The Company meets the requirements for use of Form S-3 under
         the 1933 Act.  Each of the Registration Statement and any Rule 462(b)
         Registration Statement has





                                       3
<PAGE>   4
         become effective under the 1933 Act and no stop order suspending the
         effectiveness of the Registration Statement or any Rule 462(b)
         Registration Statement has been issued under the 1933 Act and no
         proceedings for that purpose have been instituted or are pending or,
         to the knowledge of the Company, are contemplated by the Commission,
         and any request on the part of the Commission for additional
         information has been complied with.  In addition, the Indenture has
         been duly qualified under the 1939 Act.

              At the respective times the Registration Statement, any Rule
         462(b) Registration Statement and any post-effective amendments
         thereto (including the filing of the Company's most recent Annual
         Report on Form 10-K with the Commission (the "Annual Report on Form
         10-K")) became effective and at each Representation Date, the
         Registration Statement, any Rule 462(b) Registration Statement and any
         amendments and supplements thereto complied and will comply in all
         material respects with the requirements of the 1933 Act and the 1933
         Act Regulations and the 1939 Act and the rules and regulations of the
         Commission under the 1939 Act (the "1939 Act Regulations") and did not
         and will not contain an untrue statement of a material fact or omit to
         state a material fact required to be stated therein or necessary to
         make the statements therein not misleading.  At the date of the
         Prospectus, at the Closing Time and at each Date of Delivery, if any,
         the Prospectus and any amendments and supplements thereto did not and
         will not include an untrue statement of a material fact or omit to
         state a material fact necessary in order to make the statements
         therein, in the light of the circumstances under which they were made,
         not misleading.  If the Company elects to rely upon Rule 434 of the
         1933 Act Regulations, the Company will comply with the requirements of
         Rule 434.  Notwithstanding the foregoing, the representations and
         warranties in this subsection shall not apply to statements in or
         omissions from the Registration Statement or the Prospectus made in
         reliance upon and in conformity with information furnished to the
         Company in writing by any Underwriter through Merrill Lynch expressly
         for use in the Registration Statement or the Prospectus.

                      Each preliminary prospectus and prospectus filed as part
         of the Registration Statement as originally filed or as part of any
         amendment thereto, or filed pursuant to Rule 424 under the 1933 Act,
         complied when so filed in all material respects with the 1933 Act
         Regulations and each preliminary prospectus and the Prospectus
         delivered to the Underwriters for use in connection with the offering
         of Underwritten Securities will, at the time of such delivery, be
         identical to any electronically transmitted copies thereof filed with
         the Commission pursuant to EDGAR, except to the extent permitted by
         Regulation S-T.

             (2)  The documents incorporated or deemed to be incorporated by
         reference in the Registration Statement and the Prospectus, at the
         time they were or hereafter are filed with the Commission, complied
         and will comply in all material respects with the requirements of the
         1934 Act and the rules and regulations of the Commission thereunder
         (the "1934 Act Regulations") and, when read together with the other
         information in the





                                       4
<PAGE>   5
         Prospectus, at the date of the Prospectus, at the Closing Time and at
         each Date of Delivery, if any, did not and will not include an untrue
         statement of a material fact or omit to state a material fact
         necessary to make the statements therein, in the light of the
         circumstances under which they were made, not misleading.

             (3)  The accountants who certified the financial statements and
         any supporting schedules thereto included in the Registration
         Statement and the Prospectus are independent public accountants as
         required by the 1933 Act and the 1933 Act Regulations.

             (4)  The financial statements of the Company included in the
         Registration Statement and the Prospectus, together with the related
         schedules and notes, as well as those financial statements, schedules
         and notes of any other entity included therein, present fairly the
         financial position of the Company and its consolidated subsidiaries,
         or such other entity, as the case may be, at the dates indicated and
         the statement of operations, shareholders' equity and cash flows of
         the Company and its consolidated subsidiaries, or such other entity,
         as the case may be, for the periods specified.  Such financial
         statements have been prepared in conformity with generally accepted
         accounting principles ("GAAP") applied on a consistent basis
         throughout the periods involved.  The supporting schedules, if any,
         included in the Registration Statement and the Prospectus present
         fairly in accordance with GAAP the information required to be stated
         therein.  The selected financial data and the summary financial
         information included in the Prospectus present fairly the information
         shown therein and have been compiled on a basis consistent with that
         of the audited financial statements included in the Registration
         Statement and the Prospectus.  In addition, any pro forma financial
         statements of the Company and its subsidiaries and the related notes
         thereto included in the Registration Statement and the Prospectus
         present fairly the information shown therein, have been prepared in
         accordance with the Commission's rules and guidelines with respect to
         pro forma financial statements and have been properly compiled on the
         bases described therein, and the assumptions used in the preparation
         thereof are reasonable and the adjustments used therein are
         appropriate to give effect to the transactions and circumstances
         referred to therein.

              (5)  Since the respective dates as of which information is given
         in the Registration Statement and the Prospectus, except as otherwise
         stated therein, (A) there has been no material adverse change in the
         condition, financial or otherwise, or in the earnings, business
         affairs or business prospects of the Company and its subsidiaries
         considered as one enterprise, whether or not arising in the ordinary
         course of business (a "Material Adverse Effect"), (B) there have been
         no transactions entered into by the Company or any of its
         subsidiaries, other than those arising in the ordinary course of
         business, which are material with respect to the Company and its
         subsidiaries considered as one enterprise and (C) except for regular
         dividends on the Company's shares of beneficial interest, in amounts
         per share that are consistent with past practice, there has been no
         dividend or





                                       5
<PAGE>   6
         distribution of any kind declared, paid or made by the Company on any
         class of its capital stock.

              (6)  The Company has been duly organized and is validly existing
         as a business trust of unlimited duration with transferable shares of
         beneficial interest in good standing under the laws of the District of
         Columbia, with full power and authority to own, lease and operate its
         properties and to conduct its business as described in the Prospectus
         and to enter into and perform its obligations under, or as
         contemplated under, this Underwriting Agreement and the applicable
         Terms Agreement.  The Company is duly qualified as a foreign
         corporation to transact business and is in good standing in each other
         jurisdiction in which such qualification is required, whether by
         reason of the ownership or leasing of property or the conduct of
         business, except where the failure to so qualify or be in good
         standing would not result in a Material Adverse Effect.

              (7)  Each "significant subsidiary" of the Company (as such term
         is defined in Rule 1-02 of Regulation S-X promulgated under the 1933
         Act) (each, a "Subsidiary" and, collectively, the "Subsidiaries")
         (which term includes corporations, limited and general partnerships,
         joint ventures and other entities, and includes direct and indirect
         subsidiaries), if any, has been duly organized and is validly existing
         as a corporation or partnership, as the case may be, in good standing
         under the laws of the jurisdiction of its organization, has power and
         authority to own, lease and operate its properties and to conduct its
         business as described in the Prospectus and is duly qualified to
         transact business and is in good standing in each jurisdiction in
         which such qualification is required, whether by reason of the
         ownership or leasing of property or the conduct of business, except
         where the failure to so qualify or be in good standing would not
         result in a Material Adverse Effect.  Except as otherwise stated in
         the Registration Statement and the Prospectus, all of the issued and
         outstanding capital stock or other ownership interests of each
         Subsidiary have been duly authorized and validly issued, are fully
         paid and non-assessable and are owned by the Company, directly or
         through subsidiaries, free and clear of any security interest,
         mortgage, pledge, lien, encumbrance, claim or equity.

              (8) The authorized, issued and outstanding shares of beneficial
         interest of the Company are as set forth in the Prospectus under the
         caption "Capitalization" (except for subsequent issuances thereof, if
         any, contemplated under this Underwriting Agreement, pursuant to
         dividend reinvestment plans, reservations, agreements or employee
         benefit plans referred to in the Prospectus or pursuant to the
         exercise of convertible securities or options referred to in the
         Prospectus). Such shares of beneficial interest have been duly
         authorized and validly issued by the Company and are fully paid and
         non-assessable, and none of such shares of beneficial interest was
         issued in violation of preemptive or other similar rights of any
         securityholder of the Company.





                                       6
<PAGE>   7
              (9)  This Underwriting Agreement has been, and the applicable
         Terms Agreement as of the date thereof will have been, duly
         authorized, executed and delivered by the Company.

              (10) The Underwritten Securities being sold pursuant to the
         applicable Terms Agreement have been, or as of the date of such Terms
         Agreement will have been, duly authorized by the Company for issuance
         and sale pursuant to this Underwriting Agreement and such Terms
         Agreement.  Such Underwritten Securities, when issued and
         authenticated in the manner provided for in the Indenture and
         delivered against payment of the consideration therefor specified in
         such Terms Agreement, will constitute valid and legally binding
         obligations of the Company, enforceable against the Company in
         accordance with their terms, except as the enforcement thereof may be
         limited by bankruptcy, insolvency, reorganization, moratorium or other
         similar laws relating to or affecting creditors' rights generally or
         by general equitable principles, and except further as enforcement
         thereof may be limited by (A) requirements that a claim with respect
         to any Debt Securities denominated other than in U.S. dollars (or a
         foreign or composite currency judgment in respect of such claim) be
         converted into U.S. dollars at a rate of 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.  Such Underwritten Securities will be in the form contemplated
         by, and each registered holder thereof is entitled to the benefits of,
         the Indenture.

              (11) The Indenture has been duly authorized, executed and
         delivered by the Company and constitutes a valid and legally binding
         agreement of the Company, enforceable against the Company in
         accordance with its terms, except as the enforcement thereof may be
         limited by bankruptcy, insolvency, reorganization, moratorium or other
         similar laws relating to or affecting creditors' rights generally or
         by general equitable principles.

              (12)  The Underwritten Securities being sold pursuant to the
         applicable Terms Agreement and the Indenture, as of the date of the
         Prospectus, will conform in all material respects to the statements
         relating thereto contained in the Prospectus and will be in
         substantially the form filed or incorporated by reference, as the case
         may be, as an exhibit to the Registration Statement.

              (13)  Neither the Company nor any of its subsidiaries is in
         violation of its declaration of trust, partnership agreement, charter,
         by-laws or other organizational document or in default in the
         performance or observance of any obligation, agreement, covenant or
         condition contained in any contract, indenture, mortgage, deed of
         trust, loan or credit agreement, note, lease or other agreement or
         instrument to which the Company or any of its subsidiaries is a party
         or by which it or any of them may be bound, or to which any of the
         property or assets of the Company or any of its subsidiaries is
         subject, except for such defaults that would not result in a Material
         Adverse Effect.  The execution, delivery and performance of this
         Underwriting Agreement, the applicable Terms Agreement and the





                                       7
<PAGE>   8
         Indenture and any other agreement or instrument entered into or issued
         or to be entered into or issued by the Company in connection with the
         transactions contemplated hereby or thereby or in the Registration
         Statement and the Prospectus and the consummation of the transactions
         contemplated herein and in the Registration Statement and the
         Prospectus and compliance by the Company with its obligations
         hereunder and thereunder have been duly authorized by all necessary
         action on the part of the Company  and do not and will not, whether
         with or without the giving of notice or passage of time or both,
         conflict with or constitute a breach of, or default under, or result
         in the creation or imposition of any lien, charge or encumbrance upon
         any assets, properties or operations of the Company or any of its
         subsidiaries pursuant to, any contract, indenture, mortgage, deed of
         trust, loan or credit agreement, note, lease or other agreement or
         instrument to which the Company or any of its subsidiaries is a party
         or which it or any of them may be bound or to which any property or
         assets of the Company or any of its subsidiaries is subject (except
         for such conflicts, breaches, defaults, events or liens, charges or
         encumbrances that would not result in a Material Adverse Effect) nor
         will such action result in any violation of the provisions of the
         declaration of trust, partnership agreement, charter, by-laws, or
         other organizational documents of the Company or any of its
         subsidiaries or any applicable law, statute, rule, regulation,
         judgment, order, writ or decree of any government, government
         instrumentality or court, domestic or foreign, having jurisdiction
         over the Company or any if its subsidiaries or any of their assets,
         properties or operations.

              (14)  There is not pending or threatened any action, suit,
         proceeding, inquiry or investigation before or brought by any court or
         governmental agency or body, domestic or foreign, now pending, or to
         the knowledge of the Company threatened, against or affecting the
         Company or any of its subsidiaries which is required to be disclosed
         in the Registration Statement and the Prospectus (other than as stated
         therein), or which might reasonably be expected to result in a
         Material Adverse Effect, or which might reasonably be expected to
         materially and adversely affect the assets, properties or operations
         thereof or the consummation of the transactions contemplated under
         this Underwriting Agreement, the applicable Terms Agreement or the
         Indenture or the performance by the Company of its obligations
         hereunder and thereunder.  The aggregate of all pending legal or
         governmental proceedings to which the Company or any of its
         subsidiaries is a party or of which any of their respective assets,
         properties or operations is the subject which are not described in the
         Registration Statement and the Prospectus, including ordinary routine
         litigation incidental to the business, could not reasonably be
         expected to result in a Material Adverse Effect.

              (15)  There are no contracts or documents which are required to
         be described in the Registration Statement, the Prospectus or the
         documents incorporated by reference therein or to be filed as exhibits
         thereto which have not been so described and filed as required.





                                       8
<PAGE>   9
              (16)  Each approval, consent, order, authorization, designation,
         declaration or filing by or with any regulatory, administrative or
         other governmental body necessary in connection with the execution and
         delivery by the Company of this Underwriting Agreement, the applicable
         Terms Agreement and the Indenture and the consummation of the
         transactions herein and therein contemplated (except such additional
         steps as may be required by the National Association of Securities
         Dealers, Inc. (the "NASD") or may be necessary to qualify the
         Underwritten Securities for public offering by the Underwriters under
         state securities or Blue Sky laws) has been obtained or made and is in
         full force and effect.

              (17)  The Company and its subsidiaries hold all material
         licenses, certificates and permits from governmental authorities which
         are necessary to the conduct of their business; and neither the
         Company nor any subsidiary has infringed any patents, patent rights,
         trade names, trademarks or copyrights, which infringement would result
         in a Material Adverse Effect.

              (18)  With respect to all tax periods regarding which the
         Internal Revenue Service is or will be entitled to assert any claim,
         the Company has met the requirements for qualification as a real
         estate investment trust under Sections 856 through 860 of the Internal
         Revenue Code, as amended, and the Company's present and contemplated
         operations, assets and income continue to meet such requirements.

              (19) The Company and its subsidiaries have good and marketable
         title to, or valid and enforceable leasehold estates in, all items of
         real and personal property referred to in the Prospectus as owned or
         leased by them, in each case free and clear of all liens,
         encumbrances, claims, security interests and defects, other than those
         referred to in the Prospectus or which are not material in amount.
         Each lease of real peroperty by the Company or any of its
         subsidiaries, as lessor requiring annual lease payments in excess of
         $100,000 is the legal, valid and binding obligation of the lessee in
         accordance with its terms (except that the remedy of specific
         performance and injunctive and other forms of equitable relief may be
         subject to equitable defenses and to the discretion of the court
         before which any proceeding therefor may be brought and to the
         Bankruptcy Act) and the rents which at present have remained due and
         unpaid for more than 30 days are not payable under leases such that,
         were no further rental payments to be received under such leases, the
         financial condition or results of operations of the Company and its
         subsidiaries would be materially adversely affected thereby.  The
         Company has no reason to believe that the lessee under any lease
         (excluding leases for which rent payments due for the remainder of
         such lease are less than $500,000) calling for annual lease payments
         in excess of $500,000 is not financially capable of performing its
         obligations thereunder.

              (20) The Company has filed all Federal, State and foreign income
         tax returns which have been required to be filed and has paid all
         taxes indicated by said returns and all assessments received by it to
         the extent that such taxes have become due.





                                       9
<PAGE>   10
             (21) The Underwritten Securities, upon issuance, will be excluded
         or exempted under, or beyond the purview of, the Commodity Exchange
         Act, as amended (the "Commodity Exchange Act"), and the rules and
         regulations of the Commodity Futures Trading Commission under the
         Commodity Exchange Act (the "Commodity Exchange Act Regulations").

              (22) The Company is not, and upon the issuance and sale of the
         Underwritten Securities as herein contemplated and the application of
         the net proceeds therefrom as described in the Prospectus will not be,
         an "investment company" within the meaning of the Investment Company
         Act of 1940, as amended (the "1940 Act").

              (23) The Company has no knowledge of (a) the unlawful presence of
         any hazardous substances, hazardous materials, toxic substances or
         waste materials (collectively, "Hazardous Materials") on any of the
         properties owned by it or any of its subsidiaries, or of (b) any
         unlawful spills, releases, discharges or disposal of Hazardous
         Materials that have occurred or are presently occurring off such
         properties as a result of any construction on or operation and use of
         such properties which presence or occurrence, singly or in the
         aggregate, would result in a Material Adverse Effect.  In connection
         with the construction on or operation and the use of the properties
         owned by the Company and its subsidiaries, the Company represents
         that, as of the date of this Underwriting Agreement and will represent
         that, as of the date of the applicable Terms Agreement, it has no
         knowledge of any material failure to comply with all applicable local,
         state and federal environmental laws, regulations, ordinances and
         administrative and judicial orders relating to the generation,
         recycling, reuse, sale, storage, handling, transport and disposal of
         any Hazardous Materials.

              (24) The Company has complied with, and is and will be in
         compliance with, the provisions of that certain Florida act relating
         to disclosure of doing business with Cuba, codified as Section 517.075
         of the Florida statutes, and the rules and regulations thereunder or
         is exempt therefrom.

(b) Any certificate signed by any officer of the Company or any of its
subsidiaries and delivered to any Underwriter or to counsel for the
Underwriters in connection with the offering of the Underwritten Securities
shall be deemed a representation and warranty by the Company to each
Underwriter as to the matters covered thereby on the date of such certificate
and, unless subsequently amended or supplemented, at each Representation Date
subsequent thereto.

         SECTION 2.  Sale and Delivery to Underwriters; Closing.

         (a)  The several commitments of the Underwriters to purchase the
Underwritten Securities pursuant to the applicable Terms Agreement shall be
deemed to have been made on the basis of the representations and warranties
herein contained and shall be subject to the terms and conditions herein set
forth.





                                       10
<PAGE>   11
         (b)  In addition, subject to the terms and conditions herein set
forth, the Company may grant, if so provided in the applicable Terms Agreement,
an option to the Underwriters, severally and not jointly, to purchase up to the
aggregate principal amount of the Option Underwritten Securities set forth
therein at a price per Option Underwritten Security equal to the price per
Initial Underwritten Security.  Such option, if granted, will expire 30 days
after the date of such Terms Agreement, and may be exercised in whole or in
part from time to time only for the purpose of covering over-allotments which
may be made in connection with the offering and distribution of the Initial
Underwritten Securities upon notice by Merrill Lynch to the Company setting
forth the aggregate principal amount of Option Underwritten Securities as to
which the several Underwriters are then exercising the option and the time,
date and place of payment and delivery for such Option Underwritten Securities.
Any such time and date of payment and delivery (each, a "Date of Delivery")
shall be determined by Merrill Lynch, but shall not be later than seven full
business days after the exercise of said option, nor in any event prior to the
Closing Time, unless otherwise agreed upon by Merrill Lynch and the Company.
If the option is exercised as to all or any portion of the Option Underwritten
Securities, each of the Underwriters, severally and not jointly, will purchase
that proportion of the aggregate principal amount of Option Underwritten
Securities then being purchased which the aggregate principal amount of Initial
Underwritten Securities each such Underwriter has severally agreed to purchase
as set forth in such Terms Agreement bears to the aggregate principal amount of
Initial Underwritten Securities.

         (c)  Payment of the purchase price for, and delivery of, the Initial
Underwritten Securities shall be made at the offices of Andrews & Kurth L.L.P.,
1701 Pennsylvania Avenue, N.W., Washington, D.C.  20006, or at such other place
as shall be agreed upon by Merrill Lynch and the Company, at 10:00 A.M.
(Eastern time) on the third (fourth, if the pricing occurs after 4:30 P.M.
(Eastern time) on any given day) business day after the date of the applicable
Terms Agreement (unless postponed in accordance with the provisions of Section
10 hereof), or such other time not later than ten business days after such date
as shall be agreed upon by Merrill Lynch and the Company (such time and date of
payment and delivery being herein called "Closing Time").  In addition, in the
event that the Underwriters have exercised their option, if any, to purchase
any or all of the Option Underwritten Securities, payment of the purchase price
for, and delivery of such Option Underwritten Securities, shall be made at the
above-mentioned offices of Andrews & Kurth L.L.P., or at such other place as
shall be agreed upon by Merrill Lynch and the Company, on the relevant Date of
Delivery as specified in the notice from Merrill Lynch to the Company.

         Payment shall be made to the Company by wire transfer of immediately
available funds to a bank account designated by the Company, against delivery
to Merrill Lynch for the respective accounts of the Underwriters of the
Underwritten Securities to be purchased by them.  It is understood that each
Underwriter has authorized Merrill Lynch, for its account, to accept delivery
of, receipt for, and make payment of the purchase price for, the Underwritten
Securities which it has severally agreed to purchase.  Merrill Lynch,
individually and not as representative of the Underwriters, may (but shall not
be obligated to) make payment of the purchase price for





                                       11
<PAGE>   12
the Underwritten Securities to be purchased by any Underwriter whose funds have
not been received by the Closing Time or the relevant Date of Delivery, as the
case may be, but such payment shall not relieve such Underwriter from its
obligations hereunder.

         (d)  The Underwritten Securities shall be in such denominations and
registered in such names as Merrill Lynch may request in writing at least one
full business day prior to the Closing Time or the relevant Date of Delivery,
as the case may be.  The Underwritten Securities, which may be in temporary
form, will be made available for examination and packaging by Merrill Lynch in
The City of New York not later than 10:00 A.M. (Eastern time) on the business
day prior to the Closing Time or the relevant Date of Delivery, as the case may
be.

         SECTION 3.  Covenants of the Company.  The Company covenants with
Merrill Lynch and with each Underwriter participating in the offering of
Underwritten Securities, as follows:

              (a)  The Company, subject to Section 3(b), will comply with the
         requirements of Rule 430A of the 1933 Act Regulations and/or Rule 434
         of the 1933 Act Regulations, if and as applicable, and will notify the
         Representative(s) immediately, and confirm the notice in writing, of
         (i) the effectiveness of any post-effective amendment to the
         Registration Statement or the filing of any supplement or amendment to
         the Prospectus, (ii) the receipt of any comments from the Commission,
         (iii) any request by the Commission for any amendment to the
         Registration Statement or any amendment or supplement to the
         Prospectus or for additional information, and (iv) the issuance by the
         Commission of any stop order suspending the effectiveness of the
         Registration Statement or of any order preventing or suspending the
         use of any preliminary prospectus, or of the suspension of the
         qualification of the Underwritten Securities for offering or sale in
         any jurisdiction, or of the initiation or threatening of any
         proceedings for any of such purposes.  The Company will promptly
         effect the filings necessary pursuant to Rule 424 and will take such
         steps as it deems necessary to ascertain promptly whether the
         Prospectus transmitted for filing under Rule 424 was received for
         filing by the Commission and, in the event that it was not, it will
         promptly file the Prospectus.  The Company will make every reasonable
         effort to prevent the issuance of any stop order and, if any stop
         order is issued, to obtain the lifting thereof at the earliest
         possible moment.

              (b)  The Company will give Merrill Lynch notice of its intention
         to file or prepare any amendment to the Registration Statement
         (including any filing under Rule 462(b) of the 1933 Act Regulations),
         any Term Sheet or any amendment, supplement or revision to either the
         prospectus included in the Registration Statement at the time it
         became effective or to the Prospectus, whether pursuant to the 1933
         Act, the 1934 Act or otherwise, will furnish Merrill Lynch with copies
         of any such documents a reasonable amount of time prior to such
         proposed filing or use, as the case may be, and will not file or use
         any such document to which Merrill Lynch or counsel for the
         Underwriters shall object.





                                       12
<PAGE>   13
              (c)  The Company has furnished or will deliver to Merrill Lynch
         and counsel for the Underwriters, without charge, signed copies of the
         Registration Statement as originally filed and of each amendment
         thereto (including exhibits filed therewith or incorporated by
         reference therein and documents incorporated or deemed to be
         incorporated by reference therein) and signed copies of all consents
         and certificates of experts, and will also deliver to Merrill Lynch,
         without charge, a conformed copy of the Registration Statement as
         originally filed and of each amendment thereto (without exhibits) for
         each of the Underwriters.  Copies of the Registration Statement and
         each amendment thereto furnished to the Underwriters will be identical
         to any electronically transmitted copies thereof filed with the
         Commission pursuant to EDGAR, except to the extent permitted by
         Regulation S-T.

              (d)  The Company will deliver to each Underwriter, without
         charge, as many copies of each preliminary prospectus as such
         Underwriter may reasonably request, and the Company hereby consents to
         the use of such copies for purposes permitted by the 1933 Act.  The
         Company will furnish to each Underwriter, without charge, during the
         period when the Prospectus is required to be delivered under the 1933
         Act or the 1934 Act, such number of copies of the Prospectus as such
         Underwriter may reasonably request.  The Prospectus and any amendments
         or supplements thereto furnished to the Underwriters will be identical
         to any electronically transmitted copies thereof filed with the
         Commission pursuant to EDGAR, except to the extent permitted by
         Regulation S-T.

              (e)  The Company will comply with the 1933 Act and the 1933 Act
         Regulations and the 1934 Act and the 1934 Act Regulations so as to
         permit the completion of the distribution of the Underwritten
         Securities as contemplated in this Underwriting Agreement and the
         applicable Terms Agreement and in the Registration Statement and the
         Prospectus.  If at any time when the Prospectus is required by the
         1933 Act or the 1934 Act to be delivered in connection with sales of
         the Securities, any event shall occur or condition shall exist as a
         result of which it is necessary, in the opinion of counsel for the
         Underwriters or for the Company, to amend the Registration Statement
         in order that the Registration Statement will not contain an untrue
         statement of a material fact or omit to state a material fact required
         to be stated therein or necessary to make the statements therein not
         misleading or to amend or supplement the Prospectus in order that the
         Prospectus will not include an untrue statement of a material fact or
         omit to state a material fact necessary in order to make the
         statements therein not misleading in the light of the circumstances
         existing at the time it is delivered to a purchaser, or if it shall be
         necessary, in the opinion of such counsel, at any such time to amend
         the Registration Statement or amend or supplement the Prospectus in
         order to comply with the requirements of the 1933 Act or the 1933 Act
         Regulations, the Company will promptly prepare and file with the
         Commission, subject to Section 3(b), such amendment or supplement as
         may be necessary to correct such statement or omission or to make the
         Registration Statement or the Prospectus comply with such
         requirements, and the





                                       13
<PAGE>   14
         Company will furnish to the Underwriters, without charge, such number
         of copies of such amendment or supplement as the Underwriters may
         reasonably request.

              (f)  The Company will use its best efforts, in cooperation with
         the Underwriters, to qualify the Underwritten Securities for offering
         and sale under the applicable securities laws of such states and other
         jurisdictions (domestic or foreign) as Merrill Lynch may designate and
         to maintain such qualifications in effect for a period of not less
         than one year from the date of the applicable Terms Agreement;
         provided, however, that the Company shall not be obligated to file any
         general consent to service of process or to qualify as a foreign
         corporation or as a dealer in securities in any jurisdiction in which
         it is not so qualified or to subject itself to taxation in respect of
         doing business in any jurisdiction in which it is not otherwise so
         subject.  In each jurisdiction in which the Underwritten Securities
         have been so qualified, the Company will file such statements and
         reports as may be required by the laws of such jurisdiction to
         continue such qualification in effect for a period of not less than
         one year from the date of such Terms Agreement.

              (g)  The Company will timely file such reports pursuant to the
         1934 Act as are necessary in order to make generally available to its
         security holders as soon as practicable an earnings statement for the
         purposes of, and to provide the benefits contemplated by, the last
         paragraph of Section 11(a) of the 1933 Act.

              (h)  The Company will use the net proceeds received by it from
         the sale of the Underwritten Securities in the manner specified in the
         Prospectus under "Use of Proceeds".

              (i)  The Company will use its best efforts to effect the listing
         of the Underwritten Securities, prior to the Closing Time, on any
         national securities exchange or quotation system if and as specified
         in the applicable Terms Agreement.

              (j)  Between the date of the applicable Terms Agreement and the
         Closing Time or such other date specified in such Terms Agreement, the
         Company will not, without the prior written consent of Merrill Lynch,
         directly or indirectly, issue, sell, offer to sell, grant any option
         for the sale of, or otherwise dispose of, the securities specified in
         such Terms Agreement.

              (k)  The Company, during the period when the Prospectus is
         required to be delivered under the 1933 Act or the 1934 Act, will file
         all documents required to be filed with the Commission pursuant to the
         1934 Act within the time periods required by the 1934 Act and the 1934
         Act Regulations.





                                       14
<PAGE>   15
             (l)    The Company will elect to qualify as a "real estate
         investment trust" under the   Internal Revenue Code of 1986, as
         amended, and will use its best efforts to continue to   meet the
         requirements to qualify as a "real estate investment trust".

         SECTION 4.  Payment of Expenses.  (a) The Company will pay all
expenses incident to the performance of its obligations under this Underwriting
Agreement and the applicable Terms Agreement, including (i) the preparation,
printing and filing of the Registration Statement (including financial
statements and exhibits) as originally filed and of each amendment thereto,
(ii) the preparation, printing and delivery to the Underwriters of this
Underwriting Agreement, any Terms Agreement, any Agreement among Underwriters,
the Indenture and such other documents as may be required in connection with
the offering, purchase, sale, issuance or delivery of the Underwritten
Securities, (iii) the preparation, issuance and delivery of the Underwritten
Securities and any certificates for the Underwritten Securities to the
Underwriters, including any transfer taxes and any stamp or other duties
payable upon the sale, issuance or delivery of the Underwritten Securities to
the Underwriters, (iv) the fees and disbursements of the Company's counsel,
accountants and other advisors or agents (including transfer agents and
registrars), as well as the fees and disbursements of the Indenture Trustee and
its counsel, (v) the qualification of the Underwritten Securities under state
securities laws in accordance with the provisions of Section 3(f) hereof,
including filing fees and the reasonable fees and disbursements of counsel for
the Underwriters in connection therewith and in connection with the
preparation, printing and delivery of the Blue Sky Survey and any Legal
Investment Survey, and any amendment thereto, (vi) the printing and delivery to
the Underwriters of copies of each preliminary prospectus, any Term Sheet, and
the Prospectus and any amendments or supplements thereto, (vii) the fees
charged by nationally recognized statistical rating organizations for the
rating of the Underwritten Securities,  and if applicable, (viii) the fees and
expenses incurred with respect to the listing of the Underwritten Securities,
if applicable, and (ix) the filing fees incident to, and the reasonable fees
and disbursements of counsel to the Underwriters in connection with, the
review, if any, by the National Association of Securities Dealers, Inc. (the
"NASD") of the terms of the sale of the Underwritten Securities.

         (b)  If the applicable Terms Agreement is terminated by Merrill Lynch
in accordance with the provisions of Section 5 or Section 9(b)(i) hereof, the
Company shall reimburse the Underwriters for all of their out-of-pocket
expenses, including the reasonable fees and disbursements of counsel for the
Underwriters.

         SECTION 5.  Conditions of Underwriters' Obligations.  The obligations
of the Underwriters to purchase and pay for the Underwritten Securities
pursuant to the applicable Terms Agreement are subject to the accuracy of the
representations and warranties of the Company contained in Section 1 hereof or
in certificates of any officer of the Company or any of its subsidiaries
delivered pursuant to the provisions hereof, to the performance by the Company
of its covenants and other obligations hereunder, and to the following further
conditions:





                                       15
<PAGE>   16
              (a)  The Registration Statement, including any Rule 462(b)
         Registration Statement, has become effective under the 1933 Act and no
         stop order suspending the effectiveness of the Registration Statement
         shall have been issued under the 1933 Act and no proceedings for that
         purpose shall have been initiated or be pending or threatened by the
         Commission, and any request on the part of the Commission for
         additional information shall have been complied with to the reasonable
         satisfaction of counsel to the Underwriters.  A prospectus containing
         information relating to the description of the Underwritten
         Securities, the specific method of distribution and similar matters
         shall have been filed with the Commission in accordance with Rule
         424(b)(1), (2), (3), (4) or (5), as applicable (or any required
         post-effective amendment providing such information shall have been
         filed and declared effective in accordance with the requirements of
         Rule 430A), or, if the Company has elected to rely upon Rule 434 of
         the 1933 Act Regulations, a Term Sheet including the Rule 434
         Information shall have been filed with the Commission in accordance
         with Rule 424(b)(7).

              (b)  At Closing Time, Merrill Lynch shall have received:

                      (1)  The favorable opinion, dated as of Closing Time, of
                 Arent Fox Kintner Plotkin & Kahn, special counsel for the
                 Company, in form and substance satisfactory to counsel for the
                 Underwriters, to the effect that:

                               (i)  The Company has been duly organized and is
                          validly existing as a business trust in good standing
                          under the laws of the District of Columbia, with
                          power and authority to own, lease and operate its
                          properties and conduct its business as described in
                          the Prospectus and to enter into and perform its
                          obligations under the Underwriting Agreement and the
                          applicable Terms Agreement; and the conditions for
                          use of a registration statement on Form S-3 have been
                          satisfied.

                               (ii)  Each Subsidiary has been duly organized
                          and is validly existing as a corporation or
                          partnership, as the case may be, in good standing
                          under the laws of the jurisdiction of its
                          organization and has power and authority to own,
                          lease and operate its properties and to conduct its
                          business as described in the Prospectus.  Except as
                          otherwise stated in the Registration Statement and
                          the Prospectus, all of the issued and outstanding
                          capital stock or other ownership interests of each
                          Subsidiary have been duly authorized and are validly
                          issued, are fully paid and non-assessable and, to the
                          best of the knowledge of such counsel, are owned by
                          the Company, directly or through subsidiaries, free
                          and clear of any security interest, mortgage, pledge,
                          lien, encumbrance, claim or equity.

                               (iii)  The authorized, issued and outstanding
                          shares of beneficial interest of the Company are as
                          set forth in the Prospectus under the caption





                                       16
<PAGE>   17
                          "Capitalization" (except for subsequent issuances
                          thereof, if any, contemplated under the Underwriting
                          Agreement, pursuant to dividend reinvestment plans,
                          reservations, agreements or employee benefit plans
                          referred to in the Prospectus or pursuant to the
                          exercise of convertible securities or options
                          referred to in the Prospectus).  Such shares of
                          beneficial interest have been duly authorized and
                          validly issued by the Company and are fully paid and
                          non-assessable, and none of such shares of beneficial
                          interest was issued in violation of preemptive or
                          other similar rights of any securityholder of the
                          Company.

                               (iv)  The Underwriting Agreement and the
                          applicable Terms Agreement have been duly authorized,
                          executed and delivered by the Company.

                               (v)  The Underwritten Securities have been duly
                          authorized by the Company for issuance and sale
                          pursuant to the Underwriting Agreement and the
                          applicable Terms Agreement.  The Underwritten
                          Securities, when issued and authenticated in the
                          manner provided for in the Indenture and delivered
                          against payment of the consideration therefor
                          specified in such Terms Agreement, will constitute
                          valid and legally binding obligations of the Company,
                          enforceable against the Company in accordance with
                          their terms, except as the enforcement thereof may be
                          limited by bankruptcy, insolvency, reorganization,
                          moratorium or other similar laws relating to or
                          affecting creditors' rights generally or by general
                          equitable principles, and except further as
                          enforcement thereof may be limited by (A)
                          requirements that a claim with respect to any Debt
                          Securities denominated other than in U.S. dollars (or
                          a foreign or composite currency judgement in respect
                          of such claim) be converted into U.S. dollars at a
                          rate of 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. The Underwritten
                          Securities are in the form contemplated by, and each
                          registered holder thereof is entitled to the benefits
                          of, the Indenture.

                               (vi)  The Indenture has been duly authorized,
                          executed and delivered by the Company and (assuming
                          due authorization, execution and delivery thereof by
                          the Indenture Trustee) constitutes a valid and
                          legally binding agreement of the Company, enforceable
                          against the Company in accordance with its terms,
                          except as the enforcement thereof may be limited by
                          bankruptcy, insolvency, reorganization, moratorium or
                          other similar laws relating to or affecting
                          creditors' rights generally or by general equitable
                          principles.





                                       17
<PAGE>   18
                               (vii)  The Indenture has been duly qualified
                          under the 1939 Act.

                               (viii)  The Underwritten Securities being sold
                          pursuant to the applicable Terms Agreement and the
                          Indenture conform in all material respects to the
                          statements relating thereto contained in the
                          Prospectus and are in substantially the form filed or
                          incorporated by reference, as the case may be, as an
                          exhibit to the Registration Statement.

                               (ix)  The statements in the Prospectus under
                          "Description of Debt Securities" and "Certain Federal
                          Income Tax Considerations" and in the Registration
                          Statement under Item 15, insofar as such statements
                          constitute a summary of documents referred to therein
                          or matters of law, are accurate summaries and fairly
                          and correctly present the information called for with
                          respect to such documents and matters.

                               (x)  Such counsel does not know of any contracts
                          or documents required to be filed as exhibits to or
                          incorporated by reference in the Registration
                          Statement or described in the Registration Statement
                          or the Prospectus which are not so filed,
                          incorporated by reference or described as required,
                          and such contracts and documents as are summarized in
                          the Registration Statement or the Prospectus are
                          fairly summarized in all material respects (except
                          that such counsel need express no opinion as to the
                          financial statements, schedules and other financial
                          information included or incorporated by reference
                          therein).

                               (xi)  Such counsel knows of no material legal
                          proceedings pending or threatened against the Company.

                               (xii)  No approval, consent, order,
                          authorization, designation, declaration or filing by
                          or with any regulatory, administrative or other
                          governmental body is necessary in connection with the
                          execution and delivery of the Underwriting Agreement,
                          applicable Terms Agreement or the Indenture and the
                          consummation of the transactions therein contemplated
                          by the Company (other than as may be required by the
                          NASD or as required by State securities or Blue Sky
                          laws, as to which such counsel need express no
                          opinion) except such as have been obtained or made,
                          specifying the same.

                               (xiii)  The investments of the Company described
                          in the Prospectus are permitted investments under the
                          Declaration of Trust.

                               (xiv)  The Company has qualified to be taxed as
                          a real estate investment trust pursuant to Sections
                          856-860 of the Internal Revenue





                                       18
<PAGE>   19
                          Code, as amended, for the fiscal years ended December
                          31, 1978 through December 31, 1995, and the Company's
                          present method of operation and its assets and
                          contemplated income are such that the Company is in a
                          position under present law to so qualify for the
                          fiscal year ending December 31, 1996, and under the
                          present law the federal income tax treatment of the
                          Company and its shareholders will be as set forth in
                          the Prospectus under the heading "Organization of the
                          Trust".

                               (xv)  The Registration Statement has been
                          declared effective under the 1933 Act.  Any required
                          filing of the Prospectus pursuant to Rule 424(b) has
                          been made in the manner and within the time period
                          required by Rule 424(b).  To the best of such
                          counsel's knowledge, no stop order suspending the
                          effectiveness of the Registration Statement has been
                          issued under the 1993 Act and no proceedings for that
                          purpose have been initiated or are pending or
                          threatened by the Commission.

                               (xvi)  The Registration Statement and the
                          Prospectus, excluding the documents incorporated by
                          reference therein, and each amendment or supplement
                          to the Registration Statement and Prospectus,
                          excluding the documents incorporated by reference
                          therein, as of their respective effective or issue
                          dates (other than the financial statements and
                          supporting schedules included therein or omitted
                          therefrom and the Indenture Trustee's Statement of
                          Eligibility on Form T-1 (the "Form T-1"), as to which
                          such counsel need express no opinion) complied as to
                          form in all material respects with the requirements
                          of the 1933 Act and the 1933 Act Regulations.

                               (xvii)  The documents incorporated by reference
                          in the Prospectus (other than the financial
                          statements and supporting schedules therein or
                          omitted therefrom, as to which such counsel need
                          express no opinion), when they were filed with the
                          Commission, complied as to form in all material
                          respects with the requirements of the 1934 Act and
                          the rules and regulations of the Commission
                          thereunder.

                               (xviii)  The Underwritten Securities, upon
                          issuance, will be excluded or exempted under, or
                          beyond the purview of, the Commodity Exchange Act, as
                          amended (the "Commodity Exchange Act"), and the rules
                          and regulations of the Commodity Futures Trading
                          Commission under the Commodity Exchange Act (the
                          "Commodity Exchange Act Regulations").

                               (xix)  The Company is not an "investment
                          company" within the meaning of the Investment Company
                          Act of 1940, as amended (the "1940 Act").





                                       19
<PAGE>   20
                      In rendering such opinion, Arent Fox Kintner Plotkin &
                 Kahn may rely as to matters governed by the laws of
                 jurisdictions other than the District of Columbia or Federal
                 laws on local counsel in such jurisdictions, provided that in
                 each case Arent Fox Kintner Plotkin & Kahn shall state that
                 they believe that they and the Underwriters are justified in
                 relying on such other counsel.  In addition to the matters set
                 forth above, such opinion shall also include a statement to
                 the effect that nothing has come to the attention of such
                 counsel which leads them to believe that the Registration
                 Statement, as of the time it became effective under the 1933
                 Act or at the Representation Date, contained an untrue
                 statement of a material fact or omitted to state a material
                 fact required to be stated therein or necessary to make the
                 statements therein not misleading or that the Prospectus, at
                 the Representation Date or at Closing Time, contained or
                 contains an untrue statement of a material fact or omitted or
                 omits to state a material fact necessary in order to make the
                 statements therein, in the light of the circumstances under
                 which they were made, not misleading (except that such counsel
                 need express no view as to financial statements, schedules and
                 other financial information included or incorporated by
                 reference therein).  With respect to such statement, Arent Fox
                 Kintner Plotkin & Kahn may state that their belief is based
                 upon the procedures set forth therein, but is without
                 independent check and verification.

                      (2)  The favorable opinion, dated as of Closing Time, of
                 Benjamin H. Dorsey, Esq., General Counsel and Secretary to the
                 Company, in form and substance satisfactory to counsel for the
                 Underwriters, to the effect that: (i) the Company is duly
                 qualified as a foreign corporation to transact business and is
                 in good standing in each jurisdiction in which such
                 qualification is required, whether by reason of the ownership
                 or leasing of property or the conduct of business except where
                 the failure to so qualify or be in good standing would not
                 result in a Material Adverse Effect; (ii) each Subsidiary of
                 the Company is duly qualified as a foreign corporation to
                 transact business and is in good standing in each jurisdiction
                 which such qualification is required, whether by reason of the
                 ownership or leasing of property or the conduct of business,
                 except where the failure to so qualify or be in good standing
                 would not result in a Material Adverse Effect; (iii) the
                 authorized, issued and outstanding shares of beneficial
                 interest of the Company are as set forth in the Prospectus
                 under the caption "Capitalization"; such shares of beneficial
                 interest have been duly authorized and validly issued by the
                 Company and are fully paid and non-assessable and none of such
                 shares of beneficial interest was issued in violation of
                 preemptive or other similar rights of any securityholder of
                 the Company; (iv) the execution, delivery and performance of
                 the Underwriting Agreement, the applicable Terms Agreement and
                 the Indenture and the consummation of the transactions
                 contemplated therein and compliance by the Company with its
                 obligations thereunder do not and will not conflict with or
                 constitute a breach of any of the terms or provisions of, or
                 constitute a default





                                       20
<PAGE>   21
                 under, (a) the declaration of trust, partnership agreement,
                 charter, by-laws, or other organizational document of the
                 Company or any of its subsidiaries, (b) any agreement or
                 instrument known to such counsel to which the Company or any
                 of its subsidiaries is a party or by which the Company or any
                 of its subsidiaries may be bound, or (c) any order, rule or
                 regulation known to such counsel of any court or government
                 agency or body having jurisdiction over the Company or any of
                 its subsidiaries or any of their properties; (v) to the best
                 of such counsel's knowledge, neither the Company nor any of
                 its subsidiaries is in violation of its declaration of trust,
                 partnership agreement, charter, by-laws or other
                 organizational document and the Company and each of its
                 subsidiaries is in compliance with all material rules,
                 regulations, judgments, decrees, orders and statutes in the
                 jurisdictions in which it is conducting its business; and (vi)
                 all pending legal or governmental proceedings to which the
                 Company or any of its subsidiaries is a party or to which any
                 of their property is subject which are not described in the
                 Registration Statement, including ordinary routine litigation
                 incidental to the business, are, considered in the aggregate,
                 not material.

                      (3)  The favorable opinion, dated as of Closing Time, of
                 Andrews & Kurth L.L.P., counsel for the Underwriters, with
                 respect to the matters set forth in (iv), (v), (vi), (vii),
                 (viii), (ix) (only with respect to the statements set forth
                 under "Description of Debt Securities"), (xii), (xv) and (xvi)
                 of subsection (b)(l) of this Section.  In addition to the
                 matters set forth above, such opinion shall also include a
                 statement to the effect that nothing has come to the attention
                 of such counsel which leads them to believe that the
                 Registration Statement, as of the time it became effective
                 under the 1933 Act or at the Representation Date, contained an
                 untrue statement of a material fact or omitted to state a
                 material fact required to be stated therein or necessary to
                 make the statements therein not misleading or that the
                 Prospectus, at the Representation Date or at Closing Time,
                 contained or contains an untrue statement of a material fact
                 or omitted or omits to state a material fact necessary in
                 order to make the statements therein, in the light of the
                 circumstances under which they were made, not misleading
                 (except that such counsel need express no view as to financial
                 statements, schedules and other financial information included
                 or incorporated by reference therein).  With respect to such
                 statement, Andrews & Kurth L.L.P. may state that their belief
                 is based upon the procedures set forth therein, but is without
                 independent check and verification.

              (c)  At Closing Time, there shall not have been, since the date
         of the applicable Terms Agreement or since the respective dates as of
         which information is given in the Prospectus, any material adverse
         change in the condition, financial or otherwise, or in the earnings,
         business affairs or business prospects of the Company and its
         subsidiaries considered as one enterprise, whether or not arising in
         the ordinary course of business, and Merrill Lynch shall have received
         a certificate of the President or a Vice President of





                                       21
<PAGE>   22
         the Company and of the chief financial officer or chief accounting
         officer of the Company, dated as of Closing Time, to the effect that
         (i) there has been no such material adverse change, (ii) the
         representations and warranties in Section 1 are true and correct with
         the same force and effect as though expressly made at and as of the
         Closing Time, (iii) the Company has complied with all agreements and
         satisfied all conditions on its part to be performed or satisfied at
         or prior to the Closing Time, and (iv) no stop order suspending the
         effectiveness of the Registration Statement has been issued and no
         proceedings for that purpose have been initiated or threatened by the
         Commission.

              (d)  At the time of the execution of the applicable Terms
         Agreement, Merrill Lynch shall have received from Price Waterhouse
         L.L.P. a letter dated such date, in form and substance satisfactory to
         Merrill Lynch, to the effect that (i) they are independent public
         accountants with respect to the Company and its subsidiaries as
         required by the 1933 Act and the 1934 Act and the applicable published
         rules and regulations thereunder; (ii) it is their opinion that the
         consolidated financial statements and supporting schedules of the
         Company and its subsidiaries included or incorporated by reference in
         the Registration Statement and covered by their opinions therein
         comply as to form in all material respects with the applicable
         accounting requirements of the 1933 Act and the 1934 Act and the
         related published rules and regulations thereunder; (iii) based upon
         limited procedures set forth in detail in such letter (which shall
         include, without limitation, the procedures specified by the American
         Institute of Certified Public Accountants for a review of interim
         financial information as described in SAS No. 71, Interim Financial
         Information, with respect to the unaudited condensed consolidated
         financial statements of the Company and its subsidiaries included or
         incorporated by reference in the Registration Statement), nothing has
         come to their attention which causes them to believe that:


                          (1)  any material modifications should be made to the
                 unaudited condensed consolidated financial statements included
                 or incorporated by reference in the Registration Statement for
                 them to be in conformity with generally accepted accounting
                 principles;


                          (2)       the unaudited condensed consolidated
                 financial statements included or incorporated by reference in
                 the Registration Statement do not comply as to form in all
                 material respects with the applicable accounting requirements
                 of the 1933 Act and the 1934 Act as it applies to Form 10-Q
                 and the related published rules and regulations;

                          (3)       at a specified date not more than three
                 days prior to the date of such letter, there was any change in
                 the capitalization of the Company and its subsidiaries, any
                 decrease in total assets, any change in long-term debt or any
                 change in short-term borrowings of the Company and its
                 subsidiaries, as





                                       22
<PAGE>   23
                 compared with the amounts shown in the most recent
                 consolidated balance sheet incorporated by reference in the
                 Registration Statement; or


                          (4)       during the period from the date of the most
                 recent consolidated balance sheet incorporated by reference in
                 the Registration Statement to a specified date not more than
                 three days prior to the date of such letter, there were any
                 decreases, as compared with the corresponding period in the
                 preceding year, in real estate rental revenue, net income or
                 net income per share of the Company and its subsidiaries;

         except in all cases for changes, increases or decreases which the
         Registration Statement discloses have occurred or may occur; (iv) in
         addition to the limited procedures referred to in clause (iii) above,
         they have carried out certain specified procedures, not constituting
         an audit, with respect to certain amounts, percentages and financial
         information which are derived from the general accounting records of
         the Company and its subsidiaries, which are included or incorporated
         by reference in the Registration Statement and which are specified by
         Merrill Lynch, and have compared such amounts, percentages and
         financial information with the accounting records of the Company and
         its subsidiaries and have found them to be in agreement; and (v) they
         have compared the information in the Prospectus under the caption
         "Selected Financial Data" with the disclosure requirements of
         Regulation S-K and on the basis of limited procedures specified in
         such letter nothing came to their attention as a result of the
         foregoing procedures that caused them to believe that this information
         does not conform in all material respects with the disclosure
         requirements of Item 301 of Regulation S-K.

              (e)  At Closing Time, Merrill Lynch shall have received from
         Price Waterhouse L.L.P. a letter, dated as of Closing Time, to the
         effect that they reaffirm the statements made in the letter furnished
         pursuant to subsection (d) of this Section 5, except that the
         specified date referred to shall be a date not more than three
         business days prior to the Closing Time.

              (f)  At Closing Time and at any relevant Date of Delivery, the
         Underwritten Securities shall have the ratings accorded by any
         "nationally recognized statistical rating organization", as defined by
         the Commission for purposes of Rule 436(g)(2) of the 1933 Act
         Regulations, if and as specified in the applicable Terms Agreement,
         and the Company shall have delivered to Merrill Lynch a letter, dated
         as of such date, from each such rating organization, or other evidence
         satisfactory to Merrill Lynch, confirming that the Underwritten
         Securities have such ratings.  Since the time of execution of such
         Terms Agreement, there shall not have occurred a downgrading in the
         rating assigned to the Underwritten Securities or any of the Company's
         other securities by any such rating organization, and no such rating
         organization shall have publicly announced that it has under
         surveillance or review its rating of the Underwritten Securities or
         any of the Company's other securities.





                                       23
<PAGE>   24
              (g) At Closing Time, the Underwritten Securities shall have been
         approved for listing, subject only to official notice of issuance, if
         and as specified in the applicable Terms Agreement.

              (h) If the Registration Statement or an offering of Underwritten
         Securities has been filed with the NASD for review, the NASD shall not
         have raised any objection with respect to the fairness and
         reasonableness of the underwriting terms and arrangements.

              (i) On the date of the applicable Terms Agreement, Merrill Lynch
         shall have received, in form and substance satisfactory to it, each
         lock-up agreement, if any, specified in such Terms Agreement as being
         required to be delivered by the persons listed therein.

              (j) In the event that the Underwriters are granted an
         over-allotment option by the Company in the applicable Terms Agreement
         and the Underwriters exercise their option to purchase all or any
         portion of the Option Underwritten Securities, the representations and
         warranties of the Company contained herein and the statements in any
         certificates furnished by the Company or any of its subsidiaries
         hereunder shall be true and correct as of each Date of Delivery, and,
         at the relevant Date of Delivery, Merrill Lynch shall have received:

                      (1)  A certificate, dated such Date of Delivery, of the
                 President or a Vice President of the Company and the chief
                 financial officer or chief accounting officer of the Company,
                 confirming that the certificate delivered at the Closing Time
                 pursuant to Section 5(c) hereof remains true and correct as of
                 such Date of Delivery.

                      (2)  The favorable opinion of Arent Fox Kintner Plotkin &
                 Kahn, special counsel for the Company, together with the
                 favorable opinion of Benjamin H. Dorsey, Esq., General Counsel
                 and Secretary to the Company, each in form and substance
                 satisfactory to counsel for the Underwriters, dated such Date
                 of Delivery, relating to the Option Underwritten Securities
                 and otherwise to the same effect as the opinions required by
                 Section 5(b)(1) and 5(b)(2) hereof.

                      (3)  The favorable opinion of Andrews & Kurth L.L.P.,
                 counsel for the Underwriters, dated such Date of Delivery,
                 relating to the Option Underwritten Securities and otherwise
                 to the same effect as the opinion required by Section 5(b)(3)
                 hereof.

                      (4)  A letter from Price Waterhouse L.L.P., in form and
                 substance satisfactory to Merrill Lynch and dated such Date of
                 Delivery, substantially in the same form and substance as the
                 letter furnished to Merrill Lynch pursuant to Section 5(e)
                 hereof, except that the "specified date" on the letter
                 furnished pursuant to this





                                       24
<PAGE>   25
                 paragraph shall be a date not more than three business days
                 prior to such Date of Delivery.

              (k)  At Closing Time and at each Date of Delivery, counsel for
         the Underwriters shall have been furnished with such documents and
         opinions as they may require for the purpose of enabling them to pass
         upon the issuance and sale of the Underwritten Securities as herein
         contemplated, or in order to evidence the accuracy of any of the
         representations or warranties, or the fulfillment of any of the
         conditions, herein contained; and all proceedings taken by the Company
         in connection with the issuance and sale of the Underwritten
         Securities as herein contemplated shall be satisfactory in form and
         substance to Merrill Lynch and counsel for the Underwriters.

              (l)  If any condition specified in this Section 5 shall not have
         been fulfilled when and as required to be fulfilled, the applicable
         Terms Agreement (or, with respect to the Underwriters' exercise of any
         applicable over-allotment option for the purchase of Option
         Underwritten Securities on a Date of Delivery after the Closing Time,
         the obligations of the Underwriters to purchase the Option
         Underwritten Securities on such Date of Delivery) may be terminated by
         Merrill Lynch by notice to the Company at any time at or prior to the
         Closing Time (or such Date of Delivery, as applicable), and such
         termination shall be without liability of any party to any other party
         except as provided in Section 4 and except that Sections 1, 6, 7 and 8
         shall survive any such termination and remain in full force and
         effect.

         SECTION 6.  Indemnification.

         (a)  The Company agrees to indemnify and hold harmless each
Underwriter and each person, if any, who controls any Underwriter within the
meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act as follows:

              (1)  against any and all loss, liability, claim, damage and
         expense whatsoever, as incurred, arising out of any untrue statement
         or alleged untrue statement of a material fact contained in the
         Registration Statement (or any amendment thereto), including the Rule
         430A Information and the Rule 434 Information deemed to be a part
         thereof, if applicable, or the omission or alleged omission therefrom
         of a material fact required to be stated therein or necessary to make
         the statements therein not misleading or arising out of any untrue
         statement or alleged untrue statement of a material fact included in
         any preliminary prospectus or the Prospectus (or any amendment or
         supplement thereto), or the omission or alleged omission therefrom of
         a material fact necessary in order to make the statements therein, in
         the light of the circumstances under which they were made, not
         misleading;

              (2)  against any and all loss, liability, claim, damage and
         expense whatsoever, as incurred, to the extent of the aggregate amount
         paid in settlement of any litigation, or any





                                       25
<PAGE>   26
         investigation or proceeding by any governmental agency or body,
         commenced or threatened, or of any claim whatsoever based upon any
         such untrue statement or omission, or any such alleged untrue
         statement or omission; provided that (subject to Section 6(d) below)
         any such settlement is effected with the written consent of the
         Company; and

              (3)  against any and all expense whatsoever, as incurred
         (including the fees and disbursements of counsel chosen by Merrill
         Lynch), reasonably incurred in investigating, preparing or defending
         against any litigation, or any investigation or proceeding by any
         governmental agency or body, commenced or threatened, or any claim
         whatsoever based upon any such untrue statement or omission, or any
         such alleged untrue statement or omission, to the extent that any such
         expense is not paid under (i) or (ii) above;

provided, however, that this indemnity agreement shall not apply to any loss,
liability, claim, damage or expense to the extent arising out of any untrue
statement or omission or alleged untrue statement or omission made in reliance
upon and in conformity with written information furnished to the Company by any
Underwriter through Merrill Lynch expressly for use in the Registration
Statement (or any amendment thereto), including the Rule 430A Information and
the Rule 434 Information deemed to be a part thereof, if applicable, or any
preliminary prospectus or the Prospectus (or any amendment or supplement
thereto).

         (b)  Each Underwriter severally agrees to indemnify and hold harmless
the Company, its trustees, each of its officers who signed the Registration
Statement, and each person, if any, who controls the Company within the meaning
of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all
loss, liability, claim, damage and expense described in the indemnity contained
in subsection (a) of this Section, as incurred, but only with respect to untrue
statements or omissions, or alleged untrue statements or omissions, made in the
Registration Statement (or any amendment thereto), including the Rule 430A
Information and the Rule 434 Information deemed to be a part thereof, if
applicable, or any preliminary prospectus or the Prospectus (or any amendment
or supplement thereto) in reliance upon and in conformity with written
information furnished to the Company by such Underwriter through Merrill Lynch
expressly for use in the Registration Statement (or any amendment thereto) or
such preliminary prospectus or the Prospectus (or any amendment or supplement
thereto).

         (c)  Each indemnified party shall give notice as promptly as
reasonably practicable to each indemnifying party of any action commenced
against it in respect of which indemnity may be sought hereunder, but failure
to so notify an indemnifying party shall not relieve such indemnifying party
from any liability hereunder to the extent it is not materially prejudiced as a
result thereof and in any event shall not relieve it from any liability which
it may have otherwise than on account of this indemnity agreement.  In the case
of parties indemnified pursuant to Section 6(a) above, counsel to the
indemnified parties shall be selected by Merrill Lynch, and, in the case of
parties indemnified pursuant to Section 6(b) above, counsel to the indemnified
parties shall be selected by the Company.  An indemnifying party may
participate at its own expense in





                                       26
<PAGE>   27
the defense of any such action; provided, however, that counsel to the
indemnifying party shall not (except with the consent of the indemnified party)
also be counsel to the indemnified party.  In no event shall the indemnifying
parties be liable for fees and expenses of more than one counsel (in addition
to any local counsel) separate from their own counsel for all indemnified
parties in connection with any one action or separate but similar or related
actions in the same jurisdiction arising out of the same general allegations or
circumstances.  No indemnifying party shall, without the prior written consent
of the indemnified parties, settle or compromise or consent to the entry of any
judgment with respect to any litigation, or any investigation or proceeding by
any governmental agency or body, commenced or threatened, or any claim
whatsoever in respect of which indemnification or contribution could be sought
under this Section 6 or Section 7 hereof (whether or not the indemnified
parties are actual or potential parties thereto), unless such settlement,
compromise or consent (i) includes an unconditional release of each indemnified
party from all liability arising out of such litigation, investigation,
proceeding or claim and (ii) does not include a statement as to or an admission
of fault, culpability or a failure to act by or on behalf of any indemnified
party.

         (d)  If at any time an indemnified party shall have requested an
indemnifying party to reimburse the indemnified party for fees and expenses of
counsel, such indemnifying party agrees that it shall be liable for any
settlement of the nature contemplated by Section 6(a)(ii) effected without its
written consent if (i) such settlement is entered into more than 45 days after
receipt by such indemnifying party of the aforesaid request, (ii) such
indemnifying party shall have received notice of the terms of such settlement
at least 30 days prior to such settlement being entered into and (iii) such
indemnifying party shall not have reimbursed such indemnified party in
accordance with such request prior to the date of such settlement.

         SECTION 7.  Contribution.  If the indemnification provided for in
Section 6 hereof is for any reason unavailable to or insufficient to hold
harmless an indemnified party in respect of any losses, liabilities, claims,
damages or expenses referred to therein, then each indemnifying party shall
contribute to the aggregate amount of such losses, liabilities, claims, damages
and expenses incurred by such indemnified party, as incurred, (i) in such
proportion as is appropriate to reflect the relative benefits received by the
Company, on the one hand, and the Underwriters, on the other hand, from the
offering of the Underwritten Securities pursuant to the applicable Terms
Agreement or (ii) if the allocation provided by clause (i) is not permitted by
applicable law, in such proportion as is appropriate to reflect not only the
relative benefits referred to in clause (i) above but also the relative fault
of the Company, on the one hand, and of the Underwriters, on the other hand, in
connection with the statements or omissions which resulted in such losses,
liabilities, claims, damages or expenses, as well as any other relevant
equitable considerations.

         The relative benefits received by the Company, on the one hand, and
the Underwriters, on the other hand, in connection with the offering of the
Underwritten Securities pursuant to the applicable Terms Agreement shall be
deemed to be in the same respective proportions as the total net proceeds from
the offering of such Underwritten Securities (before deducting expenses)
received by the Company and the total underwriting discount received by the
Underwriters, in





                                       27
<PAGE>   28
each case as set forth on the cover of the Prospectus, or, if Rule 434 is used,
the corresponding location on the Term Sheet bear to the aggregate initial
public offering price of such Underwritten Securities as set forth on such
cover.

         The relative fault of the Company, on the one hand, and the
Underwriters, on the other hand, shall be determined by reference to, among
other things, whether any such untrue or alleged untrue statement of a material
fact or omission or alleged omission to state a material fact relates to
information supplied by the Company or by the Underwriters and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such statement or omission.

         The Company and the Underwriters agree that it would not be just and
equitable if contribution pursuant to this Section 7 were determined by pro
rata allocation (even if the Underwriters were treated as one entity for such
purpose) or by any other method of allocation which does not take account of
the equitable considerations referred to above in this Section 7.  The
aggregate amount of losses, liabilities, claims, damages and expenses incurred
by an indemnified party and referred to above in this Section 7 shall be deemed
to include any legal or other expenses reasonably incurred by such indemnified
party in investigating, preparing or defending against any litigation, or any
investigation or proceeding by any governmental agency or body, commenced or
threatened, or any claim whatsoever based upon any such untrue or alleged
untrue statement or omission or alleged omission.

         Notwithstanding the provisions of this Section 7, no Underwriter shall
be required to contribute any amount in excess of the amount by which the total
price at which the Underwritten Securities underwritten by it and distributed
to the public were offered to the public exceeds the amount of any damages
which such Underwriter has otherwise been required to pay by reason of any such
untrue or alleged untrue statement or omission or alleged omission.

         No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the 1933 Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation.

         For purposes of this Section 7, each person, if any, who controls an
Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of
the 1934 Act shall have the same rights to contribution as such Underwriter,
and each trustee of the Company, each officer of the Company who signed the
Registration Statement, and each person, if any, who controls the Company
within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act
shall have the same rights to contribution as the Company.  The Underwriters'
respective obligations to contribute pursuant to this Section 7 are several in
proportion to the number or aggregate principal amount, as the case may be, of
Initial Underwritten Securities set forth opposite their respective names in
the applicable Terms Agreement, and not joint.





                                       28
<PAGE>   29
         SECTION 8.  Representations, Warranties and Agreements to Survive
Delivery.  All representations, warranties and agreements contained in this
Underwriting Agreement or the applicable Terms Agreement or in certificates of
officers of the Company submitted pursuant hereto or thereto shall remain
operative and in full force and effect, regardless of any investigation made by
or on behalf of any Underwriter or controlling person, or by or on behalf of
the Company, and shall survive delivery of and payment for the Underwritten
Securities.

         SECTION 9.  Termination.

         (a)  This Underwriting Agreement (excluding the applicable Terms
Agreement) may be terminated for any reason at any time by the Company or by
Merrill Lynch upon the giving of 30 days' prior written notice of such
termination to the other party hereto.

         (b)  Terms Agreement.   Merrill Lynch may terminate the applicable
Terms Agreement, by notice to the Company, at any time at or prior to the
Closing Time or any relevant Date of Delivery, if (i) there has been, since the
time of execution of such Terms Agreement or since the respective dates as of
which information is given in the Prospectus, any material adverse change in
the condition, financial or otherwise, or in the earnings, business affairs or
business prospects of the Company and its subsidiaries considered as one
enterprise, whether or not arising in the ordinary course of business, or (ii)
there has occurred any material adverse change in the financial markets in the
United States or, if the Underwritten Securities are denominated or payable in,
or indexed to, one or more foreign or composite currencies, in the
international financial markets, or any outbreak of hostilities or escalation
thereof or other calamity or crisis or any change or development involving a
prospective change in national or international political, financial or
economic conditions, in each case the effect of which is such as to make it, in
the judgment of Merrill Lynch, impracticable to market the Underwritten
Securities or to enforce contracts for the sale of the Underwritten Securities,
or (iii) trading in any securities of the Company has been suspended or limited
by the Commission or the American Stock Exchange, or if trading generally on
the New York Stock Exchange or the American Stock Exchange or in the Nasdaq
National Market has been suspended or limited, or minimum or maximum prices for
trading have been fixed, or maximum ranges for prices have been required, by
either of said exchanges or by such system or by order of the Commission, the
NASD or any other governmental authority, or (iv) a banking moratorium has been
declared by either Federal or New York authorities or, if the Underwritten
Securities or any related Underlying Securities include Debt Securities
denominated or payable in, or indexed to, one or more foreign or composite
currencies, by the relevant authorities in the related foreign country or
countries.

         (c)  If this Underwriting Agreement or the applicable Terms Agreement
is terminated pursuant to this Section 9, such termination shall be without
liability of any party to any other party except as provided in Section 4
hereof, and provided further that Sections 1, 6, 7 and 8 shall survive such
termination and remain in full force and effect.





                                       29
<PAGE>   30
         SECTION 10.  Default by One or More of the Underwriters.  If one or
more of the Underwriters shall fail at the Closing Time or the relevant Date of
Delivery, as the case may be, to purchase the Underwritten Securities which it
or they are obligated to purchase under the applicable Terms Agreement (the
"Defaulted Securities"), then Merrill Lynch shall have the right, within 24
hours thereafter, to make arrangements for one or more of the non-defaulting
Underwriters, or any other underwriters, to purchase all, but not less than
all, of the Defaulted Securities in such amounts as may be agreed upon and upon
the terms herein set forth; if, however, Merrill Lynch shall not have completed
such arrangements within such 24-hour period, then:

              (a)  if the aggregate principal amount of Defaulted Securities
         does not exceed 10% of the aggregate principal amount of Underwritten
         Securities to be purchased on such date pursuant to such Terms
         Agreement, the non-defaulting Underwriters shall be obligated,
         severally and not jointly, to purchase the full amount thereof in the
         proportions that their respective underwriting obligations under such
         Terms Agreement bear to the underwriting obligations of all
         non-defaulting Underwriters, or

              (b)  if the aggregate principal amount of Defaulted Securities
         exceeds 10% of the aggregate principal amount of Underwritten
         Securities to be purchased on such date pursuant to such Terms
         Agreement, such Terms Agreement (or, with respect to the Underwriters'
         exercise of any applicable over-allotment option for the purchase of
         Option Underwritten Securities on a Date of Delivery after the Closing
         Time, the obligations of the Underwriters to purchase, and the Company
         to sell, such Option Underwritten Securities on such Date of Delivery)
         shall terminate without liability on the part of any non-defaulting
         Underwriter.

         No action taken pursuant to this Section 10 shall relieve any
defaulting Underwriter from liability in respect of its default.

         In the event of any such default which does not result in (i) a
termination of the applicable Terms Agreement or (ii) in the case of a Date of
Delivery after the Closing Time, a termination of the obligations of the
Underwriters and the Company with respect to the related Option Underwritten
Securities, as the case may be, either Merrill Lynch or the Company shall have
the right to postpone the Closing Time or the relevant Date of Delivery, as the
case may be, for a period not exceeding seven days in order to effect any
required changes in the Registration Statement or the Prospectus or in any
other documents or arrangements.

         SECTION 11.  Notices.  All notices and other communications hereunder
shall be in writing and shall be deemed to have been duly given if mailed or
transmitted by any standard form of telecommunication.  Notices to the
Underwriters shall be directed to Merrill Lynch at World Financial Center,
North Tower, New York, New York 10281-1201, attention of Tjarda V.S. Clagett,
Director; and notices to the Company shall be directed to it at 10400
Connecticut





                                       30
<PAGE>   31
Avenue, Kensington, Maryland 20895, attention of Larry E. Finger, Senior Vice
President and Chief Financial Officer.

         SECTION 12.  Parties.  This Underwriting Agreement and the applicable
Terms Agreement shall each inure to the benefit of and be binding upon the
Company, Merrill Lynch and, upon execution of such Terms Agreement, any other
Underwriters and their respective successors.  Nothing expressed or mentioned
in this Underwriting Agreement or such Terms Agreement is intended or shall be
construed to give any person, firm or corporation, other than the Underwriters
and the Company and their respective successors and the controlling persons and
officers and directors referred to in Sections 6 and 7 and their heirs and
legal representatives, any legal or equitable right, remedy or claim under or
in respect of this Underwriting Agreement or such Terms Agreement or any
provision herein or therein contained.  This Underwriting Agreement and such
Terms Agreement and all conditions and provisions hereof and thereof are
intended to be for the sole and exclusive benefit of the parties hereto and
thereto and their respective successors, and said controlling persons and
officers and directors and their heirs and legal representatives, and for the
benefit of no other person, firm or corporation.  No purchaser of Underwritten
Securities from any Underwriter shall be deemed to be a successor by reason
merely of such purchase.

         SECTION 13.  GOVERNING LAW AND TIME.  THIS UNDERWRITING AGREEMENT AND
ANY APPLICABLE TERMS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF NEW YORK.  EXCEPT AS OTHERWISE SET FORTH HEREIN,
SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

         SECTION 14.  Effect of Headings.  The Article and Section headings
herein are for convenience only and shall not affect the construction hereof.

             If the foregoing is in accordance with your understanding of our
agreement, please sign and return to the Company a counterpart hereof,
whereupon this Underwriting Agreement, along with all counterparts, will become
a binding agreement between Merrill Lynch and the Company in accordance with
its terms.


                                     Very truly yours,
                                  
                                     WASHINGTON REAL ESTATE
                                          INVESTMENT TRUST
                                  
                                  
                                  
                                     By:                          
                                           ------------------------------
                                           Name:
                                  




                                       31
<PAGE>   32
                                     Title:

CONFIRMED AND ACCEPTED,
     as of the date first
     above written:

MERRILL LYNCH, PIERCE, FENNER & SMITH
                     INCORPORATED


By: 
    -------------------------------------
             Authorized Signatory





                                       32
<PAGE>   33
                                                                       Exhibit A



                    WASHINGTON REAL ESTATE INVESTMENT TRUST
                    (a District of Columbia business trust)


                             [Title of Securities]

                                TERMS AGREEMENT


                                                              ___________, 199__


To:           Washington Real Estate Investment Trust
              10400 Connecticut Avenue
              Kensington, Maryland 20895

Attention:    Mr. Larry E. Finger
              Senior Vice President and Chief Financial Officer

Ladies and Gentlemen:

              We understand that Washington Real Estate Investment Trust (the
"Company"), proposes to issue and sell $_________ aggregate principal amount of
its debt securities (the "Debt Securities") ([such securities also being
hereinafter referred to as] the "[Initial] Underwritten Securities").  Subject
to the terms and conditions set forth or incorporated by reference herein, we
[the underwriters named below (the "Underwriters")] offer to purchase [,
severally and not jointly,] the principal amount of Underwritten Securities
[opposite their names set forth below] at the purchase price set forth below [,
and a proportionate share of Option Underwritten Securities set forth below, to
the extent any are purchased].





                                      A-1
<PAGE>   34

                                    Principal Amount
Underwriter                         of [Initial] Underwritten Securities
- -----------                         ------------------------------------
                               
                                    ----------------
Total                               [$]            
                                    ===============


         The Underwritten Securities shall have the following terms:


                               [Debt Securities]

Title:
Ratings:
Aggregate principal amount:
Denominations:
Currency of payment:
Interest rate or formula:
Interest payment dates:
Regular record dates:
Stated maturity date:
Redemption provisions:
Sinking fund requirements:
Listing requirements:
Black-out provisions:
Fixed or Variable Price Offering: [Fixed] [Variable] Price Offering
         If Fixed Price Offering, initial public offering price per share:
         % of the principal amount, plus accrued interest [amortized original
         issue discount], if any, from _________________.
Purchase price per share: ___% of principal amount, plus accrued interest
[amortized original issue discount], if any, from
_________________.
Form:
Other terms and conditions:
Closing date and location:

         All of the provisions contained in the document attached as Annex I
hereto entitled "Washington Real Estate Investment Trust--Debt
Securities--Underwriting Agreement" are hereby incorporated by reference in
their entirety herein and shall be deemed to be a part of this Terms Agreement
to the same extent as if such provisions had been set forth in full herein.
Terms defined in such document are used herein as therein defined.





                                      A-2
<PAGE>   35
        Please accept this offer no later than ____ o'clock P.M. (New York City
time) on ______________ by signing a copy of this Terms Agreement in the space
set forth below and returning the signed copy to us.


                 Very truly yours,
                
                 MERRILL LYNCH, PIERCE, FENNER & SMITH
                          INCORPORATED
                
                 By 
                    ----------------------------
                        Authorized Signatory
                
                 [Acting on behalf of itself and the other named Underwriters.]
                          

Accepted:

WASHINGTON REAL ESTATE INVESTMENT TRUST

By 
   -------------------------
   Name:
   Title:





                                      A-3

<PAGE>   1
                                                                   Draft 6/11/96





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





                    WASHINGTON REAL ESTATE INVESTMENT TRUST



                                       TO


                       THE FIRST NATIONAL BANK OF CHICAGO

                                    Trustee



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

                                   Indenture

                            Dated as of June 1, 1996

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

                             Senior Debt Securities





             -----------------------------------------------------
<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                           Page
<S>                                                                                                                           <C>
PARTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                                                                                                                           
RECITALS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                                                                                                                           
ARTICLE ONE                                                                                                                
                                                                                                                           
         DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
                                                                                                                           
         SECTION 101.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
                 Acquired Debt  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
                 Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
                 Additional Amounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
                 Affiliate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
                 Annual Service Charge  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
                 Authenticating Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Authorized Newspaper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Bankruptcy Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Bearer Security  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Board of Trustees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Board Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Business Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Capital Stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 CEDEL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Commission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
                 Common Shares  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Consolidated Income Available for Debt Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Consolidated Net Income  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Conversion Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Corporate Trust Office . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Corporation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Coupon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Custodian  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                 Defaulted Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                 Disqualified Stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                 Dollar or $  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                 DTC  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                 ECU  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                 Encumbrance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
                 Euroclear  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
</TABLE>
        
        
        
        
        
                                       i
<PAGE>   3
<TABLE>
                 <S>                                                                                                         <C>
                 European Communities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                 European Monetary System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                 Event of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                 Exchange Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                 Foreign Currency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                 GAAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                 Government Obligations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
                 Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                 Indenture  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                 Indexed Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                 Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                 Interest Payment Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
                 Maturity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
                 Officer's Certificate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
                 Opinion of Counsel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
                 Original Issue Discount Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
                 Outstanding  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
                 Paying Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
                 Person . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
                 Place of Payment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
                 Predecessor Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
                 Preferred Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Redemption Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Redemption Price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Registered Security  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Regular Record Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Repayment Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Repayment Price  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Responsible Officer  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Securities Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 Security Register and Security Registrar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Significant Subsidiary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Special Record Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Stated Maturity  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Subsidiary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Total Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Total Unencumbered Assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Trust  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Trust Indenture Act or TIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 Trust Request and Trust Order  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                 Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                 Undepreciated Real Estate Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                 United States  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
</TABLE>
        
        
        
        
                                      ii
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<TABLE>
<S>                                                                                                                          <C>
                 United States Person . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                 Unsecured Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                 Yield to Maturity  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                                                                                                                           
         SECTION 102.  Compliance Certificates and Opinions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
         SECTION 103.  Form of Documents Delivered to Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
         SECTION 104.  Acts of Holders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         SECTION 105.  Notices, etc., to Trustee and Trust  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         SECTION 106.  Notice to Holders; Waiver  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         SECTION 107.  Effect of Headings and Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         SECTION 108.  Successors and Assigns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         SECTION 109.  Separability Clause  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         SECTION 110.  Benefits of Indenture  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         SECTION 111.  Governing Law  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         SECTION 112.  Legal Holidays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         SECTION 113.  Immunity of Shareholders, Trustees, Officers and Agents                                             
                       of the Trust   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                                                                                                                           
ARTICLE TWO                                                                                                                
                                                                                                                           
         SECURITIES FORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                                                                                                                           
         SECTION 201.  Forms of Securities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         SECTION 202.  Form of Trustee's Certificate of Authentication  . . . . . . . . . . . . . . . . . . . . . . . . . .  19
         SECTION 203.  Securities Issuable in Global Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
                                                                                                                           
ARTICLE THREE                                                                                                              
                                                                                                                           
         THE SECURITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
                                                                                                                           
         SECTION 301.  Amount Unlimited; Issuable in Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         SECTION 302.  Denominations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 303.  Execution, Authentication, Delivery and Dating . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 304.  Temporary Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         SECTION 305.  Registration, Registration of Transfer and Exchange  . . . . . . . . . . . . . . . . . . . . . . . .  28
         SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         SECTION 307.  Payment of Interest; Interest Rights Preserved . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         SECTION 308.  Persons Deemed Owners  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
         SECTION 309.  Cancellation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 310.  Computation of Interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
</TABLE>
        
        
        
        
        
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<TABLE>
<S>                                                                                                                          <C>
ARTICLE FOUR                                                                                                               
                                                                                                                           
         SATISFACTION AND DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
                                                                                                                           
         SECTION 401.  Satisfaction and Discharge of Indenture  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 402.  Application of Trust Funds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
                                                                                                                           
ARTICLE FIVE                                                                                                               
                                                                                                                           
         REMEDIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
                                                                                                                           
         SECTION 501.  Events of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         SECTION 502.  Acceleration of Maturity; Rescission and Annulment . . . . . . . . . . . . . . . . . . . . . . . . .  40
         SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee  . . . . . . . . . . . . . . . . . .  41
         SECTION 504.  Trustee May File Proofs of Claim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         SECTION 505.  Trustee May Enforce Claims Without Possession of Securities or                                      
                       Coupons  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         SECTION 506.  Application of Money Collected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         SECTION 507.  Limitation on Suits  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         SECTION 508.  Unconditional Right of Holders to Receive Principal, Premium, if any,                               
                       Interest and Additional Amounts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         SECTION 509.  Restoration of Rights and Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         SECTION 510.  Rights and Remedies Cumulative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         SECTION 511.  Delay or Omission Not Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 512.  Control by Holders of Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 513.  Waiver of Past Defaults  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 514.  Waiver of Usury, Stay or Extension Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         SECTION 515.  Undertaking for Costs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
                                                                                                                           
ARTICLE SIX                                                                                                                
                                                                                                                           
         THE TRUSTEE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
                                                                                                                           
         SECTION 601.  Notice of Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         SECTION 602.  Certain Rights of Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         SECTION 603.  Not Responsible for Recitals or Issuance of Securities . . . . . . . . . . . . . . . . . . . . . . .  48
         SECTION 604.  May Hold Securities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         SECTION 605.  Money Held in Trust  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         SECTION 606.  Compensation and Reimbursement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         SECTION 607.  Corporate Trustee Required; Eligibility; Conflicting Interests . . . . . . . . . . . . . . . . . . .  49
         SECTION 608.  Resignation and Removal; Appointment of Successor  . . . . . . . . . . . . . . . . . . . . . . . . .  50
         SECTION 609.  Acceptance of Appointment by Successor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         SECTION 610.  Merger, Conversion, Consolidation or Succession to Business  . . . . . . . . . . . . . . . . . . . .  52
         SECTION 611.  Appointment of Authenticating Agent  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
</TABLE>
        
        
        
        
        
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<TABLE>
<S>                                                                                                                          <C>
ARTICLE SEVEN                                                                                                              
                                                                                                                           
         HOLDERS' LISTS AND REPORTS BY TRUSTEE AND TRUST  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
                                                                                                                           
         SECTION 701.  Disclosure of Names and Addresses of Holders . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         SECTION 702.  Reports by Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         SECTION 703.  Reports by Trust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         SECTION 704.  Trust to Furnish Trustee Names and Addresses of Holders  . . . . . . . . . . . . . . . . . . . . . .  55
                                                                                                                           
ARTICLE EIGHT                                                                                                              
                                                                                                                           
         CONSOLIDATION, MERGER, SALE, LEASE OR CONVEYANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
                                                                                                                           
         SECTION 801.  Consolidations and Mergers of Trust and Sales, Leases and Conveyances                               
                       Permitted Subject to Certain Conditions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         SECTION 802.  Rights and Duties of Successor Corporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         SECTION 803.  Officer's Certificate and Opinion of Counsel . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
                                                                                                                           
ARTICLE NINE                                                                                                               
                                                                                                                           
         SUPPLEMENTAL INDENTURES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
                                                                                                                           
         SECTION 901.  Supplemental Indentures without Consent of Holders . . . . . . . . . . . . . . . . . . . . . . . . .  57
         SECTION 902.  Supplemental Indentures with Consent of Holders  . . . . . . . . . . . . . . . . . . . . . . . . . .  58
         SECTION 903.  Execution of Supplemental Indentures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 904.  Effect of Supplemental Indentures  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 905.  Conformity with Trust Indenture Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 906.  Reference in Securities to Supplemental Indentures . . . . . . . . . . . . . . . . . . . . . . . . .  60
                                                                                                                           
ARTICLE TEN                                                                                                                
                                                                                                                           
         COVENANTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
                                                                                                                           
         SECTION 1001.  Payment of Principal, Premium, if any, Interest and Additional                                     
                        Amounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 1002.  Maintenance of Office or Agency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
         SECTION 1003.  Money for Securities Payments to Be Held in Trust . . . . . . . . . . . . . . . . . . . . . . . . .  62
         SECTION 1004.  Existence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 1005.  Maintenance of Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 1006.  Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 1007.  Payment of Taxes and Other Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
</TABLE>
        
        
        
        
        
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<TABLE>
<S>                                                                                                                          <C>
         SECTION 1008.  Provision of Financial Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 1009.  Statement as to Compliance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  65
         SECTION 1010.  Additional Amounts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  65
         SECTION 1011.  Limitations on Incurrence of Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  66
         SECTION 1012.  Maintenance of Total Unencumbered Assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  67
         SECTION 1013.  Waiver of Certain Covenants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  67
                                                                                                                           
ARTICLE ELEVEN                                                                                                             
                                                                                                                           
         REDEMPTION OF SECURITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  67
                                                                                                                           
         SECTION 1101.  Applicability of Article  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  67
         SECTION 1102.  Election to Redeem; Notice to Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  68
         SECTION 1103.  Selection by Trustee of Securities to Be Redeemed . . . . . . . . . . . . . . . . . . . . . . . . .  68
         SECTION 1104.  Notice of Redemption  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  68
         SECTION 1105.  Deposit of Redemption Price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  70
         SECTION 1106.  Securities Payable on Redemption Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  70
         SECTION 1107.  Securities Redeemed in Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  71
                                                                                                                           
ARTICLE TWELVE                                                                                                             
                                                                                                                           
         SINKING FUNDS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  71
                                                                                                                           
         SECTION 1201.  Applicability of Article  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  71
         SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities . . . . . . . . . . . . . . . . . . . . . . .  72
         SECTION 1203.  Redemption of Securities for Sinking Fund . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  72
                                                                                                                           
ARTICLE THIRTEEN                                                                                                           
                                                                                                                           
         REPAYMENT AT THE OPTION OF HOLDERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  72
                                                                                                                           
         SECTION 1301.  Applicability of Article  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  72
         SECTION 1302.  Repayment of Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
         SECTION 1303.  Exercise of Option  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
         SECTION 1304.  When Securities Presented for Repayment Become Due                                                 
                        and Payable     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  74
         SECTION 1305.  Securities Repaid in Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
                                                                                                                           
ARTICLE FOURTEEN                                                                                                           
                                                                                                                           
         DEFEASANCE AND COVENANT DEFEASANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
                                                                                                                           
         SECTION 1401.  Applicability of Article; Trust's Option to Effect Defeasance or                                   
                        Covenant Defeasance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
</TABLE>
        
        
        
        
        
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<TABLE>
<S>                                                                                                                          <C>
         SECTION 1402.  Defeasance and Discharge  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
         SECTION 1403.  Covenant Defeasance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
         SECTION 1404.  Conditions to Defeasance or Covenant Defeasance . . . . . . . . . . . . . . . . . . . . . . . . . .  76
         SECTION 1405.  Deposited Money and Government Obligations to Be Held in Trust;                                    
                        Other Miscellaneous Provisions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  78
                                                                                                                           
ARTICLE FIFTEEN                                                                                                            
                                                                                                                           
         MEETINGS OF HOLDERS OF SECURITIES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79
                                                                                                                           
         SECTION 1501.  Purposes for Which Meetings May Be Called . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79
         SECTION 1502.  Call, Notice and Place of Meetings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79
         SECTION 1503.  Persons Entitled to Vote at Meetings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  80
         SECTION 1504.  Quorum; Action  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  80
         SECTION 1505.  Determination of Voting Rights; Conduct and Adjournment of                                         
                        Meetings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  81
         SECTION 1506.  Counting Votes and Recording Action of Meetings . . . . . . . . . . . . . . . . . . . . . . . . . .  82
</TABLE>


TESTIMONIUM
SIGNATURES AND SEALS
ACKNOWLEDGMENTS
EXHIBIT A - FORMS OF CERTIFICATION





                                      vii
<PAGE>   9
                    WASHINGTON REAL ESTATE INVESTMENT TRUST


           Reconciliation and tie between Trust Indenture Act of 1939
            (the "1939 Act") and Indenture, dated as of June 1, 1996


<TABLE>
<CAPTION>
Trust Indenture Act Section                                                Indenture Section
<S>                                                                                 <C>
Section 310(a)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     607
           (a)(2)   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     607
           (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     607,608
Section 312(a)    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     704
Section 312(c)    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     701
Section 313(a)    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     702
           (c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     702
Section 314(a)    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     703
           (a)(4)   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     1009
           (c)(1)   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     102
           (c)(2)   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     102
           (e)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     102
Section 315(b)    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     601
Section 316(a) (last sentence)  . . . . . . . . . . . . . . . . . . . . . . . .     101 ("Outstanding")
           (a)(1)(A)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     512
           (a)(1)(B)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     513
           (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     508
Section 317(a)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     503
           (a)(2)   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     504
Section 318(a)    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     111
           (c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     111
</TABLE>

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

NOTE:            This reconciliation and tie shall not, for any purpose, be
                 deemed to be a part of the Indenture.

                 Attention should also be directed to Section 318(c) of the
1939 Act, which provides that the provisions of Sections 310 to and including
317 of the 1939 Act are a part of and govern every qualified indenture, whether
or not physically contained therein.





                                      viii
<PAGE>   10
                             INDENTURE, dated as of June 1, 1996, between
WASHINGTON REAL ESTATE INVESTMENT TRUST, a business trust organized under the
laws of the District of Columbia (hereinafter called the "Trust"), having its
principal office at 10400 Connecticut Avenue, Kensington, Maryland 20895 and
THE FIRST NATIONAL BANK OF CHICAGO, a national banking association organized
under the laws of the United States, as Trustee hereunder (hereinafter called
the "Trustee"), having its Corporate Trust Office, c/o First Chicago Trust
Company of New York, at 14 Wall Street, Eighth Floor-Window 2, New York, New
York 10005.

                             RECITALS OF THE TRUST

                             The Trust deems it necessary to issue from time to
time for its lawful purposes senior debt securities (hereinafter called the
"Securities") evidencing its unsecured and unsubordinated indebtedness, and has
duly authorized the execution and delivery of this Indenture to provide for the
issuance from time to time of the Securities, unlimited as to principal amount,
to bear interest at the rates or formulas, to mature at such times and to have
such other provisions as shall be fixed as hereinafter provided.

                             This Indenture is subject to the provisions of the
Trust Indenture Act of 1939, as amended ("TIA"), that are deemed to be
incorporated into this Indenture and shall, to the extent applicable, be
governed by such provisions.

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

                             NOW, THEREFORE, THIS INDENTURE WITNESSETH:

                             For and in consideration of the premises and the
purchase of the Securities by the holders thereof ("Holders"), it is mutually
covenanted and agreed, for the equal and proportionate benefit of all Holders
of the Securities, as follows:


                                  ARTICLE ONE

            DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

                 SECTION 101.  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;





                                       1
<PAGE>   11
                        (2)     all other terms used herein which are defined
                 in the TIA, either directly or by reference therein, have the
                 meanings assigned to them therein, and the terms "cash
                 transaction" and "self-liquidating paper", as used in TIA
                 Section 311, shall have the meanings assigned to them in the
                 rules of the Commission adopted under the TIA;

                        (3)     all accounting terms not otherwise defined
                 herein have the meanings assigned to them in accordance with
                 GAAP; and

                        (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.

                        Certain terms, used principally in Article Three,
Article Five, Article Six and Article Ten, are defined in those Articles.  In
addition, the following terms shall have the indicated respective meanings:

                        "Acquired Debt" means Debt of a Person (i) existing at
the time such Person becomes a Subsidiary or (ii) assumed in connection with
the acquisition of assets from such Person, in each case, other than Debt
incurred in connection with, or in contemplation of, such Person becoming a
Subsidiary or such acquisition.  Acquired Debt shall be deemed to be incurred
on the date of the related acquisition of assets from any Person or the date
the acquired Person becomes a Subsidiary.

                        "Act", when used with respect to any Holder, has the
meaning specified in Section 104.

                        "Additional Amounts" means any additional amounts which
are required by a Security or by or pursuant to a Board Resolution, under
circumstances specified therein, to be paid by the Trust in respect of certain
taxes imposed on certain Holders and which are owing to such Holders.

                        "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.

                        "Annual Service Charge" as of any date means the
maximum amount which is payable in any period for interest on, and original
issue discount of, Debt of the Trust and its Subsidiaries and the amount of
dividends which are payable in respect of any Disqualified Stock.





                                       2
<PAGE>   12
                       "Authenticating Agent" means any authenticating agent
appointed by the Trustee pursuant to Section 611.

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

                        "Bankruptcy Law" has the meaning specified in Section
501.

                        "Bearer Security" means any Security established
pursuant to Section 201 which is payable to bearer.

                        "Board of Trustees" means the board of trustees of the
Trust, the executive committee or any committee of that board duly authorized
to act hereunder.

                        "Board Resolution" means a copy of a resolution
certified by the Secretary or an Assistant Secretary of the Trust to have been
duly adopted by the Board of Trustees and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

                        "Business Day", when used with respect to any Place of
Payment or any other particular location referred to in this Indenture or in
the Securities, means, unless otherwise specified with respect to any
Securities pursuant to Section 301, any day, other than a Saturday or Sunday,
that is neither a legal holiday nor a day on which banking institutions in that
Place of Payment or particular location are authorized or required by law,
regulation or executive order to close.

                        "Capital Stock" means, with respect to any Person, any
capital stock (including preferred stock), shares, interests, participations or
other ownership interests (however designated) of such Person and any rights
(other than debt securities convertible or exchangeable for corporate stock),
warrants or options to purchase any thereof.

                        "CEDEL" means Central de Livraison de Valeurs
Mobilieres, S.A., or its successor.

                        "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 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.





                                       3
<PAGE>   13
                        "Common Shares" means, with respect to any Person,
capital stock issued by such Person other than Preferred Stock.

                        "Consolidated Income Available for Debt Service" for
any period means Consolidated Net Income of the Trust and its Subsidiaries (i)
plus amounts which have been deducted for (a) interest on Debt of the Trust and
its Subsidiaries, (b) provision for taxes of the Trust and its Subsidiaries
based on income, (c) amortization of debt discount, (d) depreciation and
amortization, (e) the effect of any noncash charge resulting from a change in
accounting principles in determining Consolidated Net Income for such period,
(f) amortization of deferred charges, and (g) provisions for or realized losses
on properties and (ii) less amounts which have included for gains on
disposition of properties.

                        "Consolidated Net Income" for any period means the
amount of consolidated net income (or loss) of the Trust and its Subsidiaries
for such period determined on a consolidated basis in accordance with GAAP.

                        "Conversion Event" means the cessation of use of (i) a
Foreign Currency both by the government of the country which issued such
currency and for the settlement of transactions by a central bank or other
public institutions of or within the international banking community, (ii) the
ECU both within the European Monetary System and for the settlement of
transactions by public institutions of or within the European Communities or
(iii) any currency unit (or composite currency) other than the ECU for the
purposes for which it was established.

                        "Corporate Trust Office" means the office of the
Trustee at which, at any particular time, its corporate trust business shall be
principally administered, which office at the date hereof is located, c/o First
Chicago Trust Company of New York, at 14 Wall Street, Eighth Floor-Window 2,
New York, New York 10005.

                        "Corporation" includes corporations, associations,
partnerships, companies and business trusts.

                        "Coupon" means any interest coupon appertaining to a
Bearer Security.

                        "Custodian" has the meaning specified in Section 501.

                        "Debt" of the Trust or any Subsidiary means any
indebtedness of the Trust or any Subsidiary, whether or not contingent, in
respect of (without duplication) (i) borrowed money evidenced by bonds,
notes, debentures or similar instruments, (ii) indebtedness secured by any
mortgage, pledge, lien, charge, encumbrance or any security interest existing
on property owned by the Trust or any Subsidiary, (iii) the reimbursement
obligations, contingent or otherwise, in connection with any letters of credit
actually issued or amounts representing the balance deferred and unpaid of the
purchase price of any property or services, except any such balance that
constitutes an accrued expense or trade payable, or all conditional sale
obligations or obligations





                                       4
<PAGE>   14
under any title retention agreement, (iv) the principal amount of all
obligations of the Trust or any Subsidiary with respect to redemption,
repayment or other repurchase of any Disqualified Stock or (v) any lease of
property by the Trust or any Subsidiary as lessee which is reflected on the
Trust's consolidated balance sheet as a capitalized lease in accordance with
GAAP to the extent, in the case of items of indebtedness under (i) through
(iii) above, that any such items (other than letters of credit) would appear as
a liability on the Trust's consolidated balance sheet in accordance with GAAP,
and also includes, to the extent not otherwise included, any obligation by the
Trust or any Subsidiary to be liable for, or to pay, as obligor, guarantor or
otherwise (other than for purposes of collection in the ordinary course of
business), Debt of another Person (other than the Trust or any Subsidiary).

                        "Defaulted Interest" has the meaning specified in 
Section 307.

                        "Disqualified Stock" means, with respect to any Person,
any Capital Stock of such Person which by the terms of such Capital Stock (or
by the terms of any security into which it is convertible or for which it is
exchangeable or exercisable), upon the happening of any event or otherwise (i)
matures or is mandatorily redeemable, pursuant to a sinking fund obligation or
otherwise,(ii) is convertible into or exchangeable or exercisable for Debt or
Disqualified Stock or (iii) is redeemable at the option of the holder thereof,
in whole or in part, in each case on or prior to the Stated Maturity of the
series of Debt Securities.

                        "Dollar" or "$" means a dollar or other equivalent unit
in such coin or currency of the United States of America as at the time shall
be legal tender for the payment of public and private debts.

                        "DTC" means The Depository Trust Company.

                        "ECU" means the European Currency Unit as defined and
revised from time to time by the Council of the European Communities.

                        "Encumbrance" means any mortgage, security interest,
pledge, hypothecation, assignment, deposit arrangement, encumbrance, lien
(statutory or other) or preference, priority or other security agreement
except:

                                (a) liens for taxes (i) which are not yet
delinquent, (ii) which are not in an aggregate amount, as to the Trust and its
Subsidiaries, greater than $____ or (iii) which are being contested in good
faith by all appropriate proceedings, provided that adequate reserves with
respect thereto are maintained on the books of the Trust or its Subsidiaries,
as the case may be, in conformity with GAAP;

                                (b) carriers, warehousemen's, mechanic's,
materialmen's, repairmen's or other like liens (i) which are not in an
aggregate amount, as to the Trust and its Subsidiaries,





                                       5
<PAGE>   15
greater than $_____, (ii) which do not remain unsatisfied or undischarged for a
period of more than 90 days or (iii) which are being contested in good faith by
all appropriate proceedings;

                                (c) pledges or deposits in connection with
workers compensation, unemployment insurance and other social security
legislation and deposits securing liability to insurance carriers under
insurance or self-insurance arrangements;

                                (d) deposits to secure the performance of bids,
trade contracts (other than for borrowed money), leases, statutory obligations,
surety and appeal bonds, performance bonds and other obligations of a like
nature incurred in the ordinary course of business; and

                                (e) easements, rights of way, restrictions,
development orders, plats and other similar encumbrances.

                        "Euroclear" means Morgan Guaranty Trust of New York,
Brussels Office, or its successor as operator of the Euroclear System.

                        "European Communities" means the European Economic
Community, the European Coal and Steel Community and the European Atomic Energy
Community.

                        "European Monetary System" means the European Monetary
System established by the Resolution of December 5, 1978 of the Council of the
European Communities.

                        "Event of Default" has the meaning specified in Article
Five.

                        "Exchange Act" means the Securities Exchange Act of
1934, as amended, and the rules and regulations promulgated thereunder by the
Commission.

                        "Foreign Currency" means any currency, currency unit or
composite currency, including, without limitation, the ECU issued by the
government of one or more countries other than the United States of America or
by any recognized confederation or association of such governments.

                        "GAAP" means generally accepted accounting principles,
as in effect from time to time, as used in the United States applied on a
consistent basis.

                        "Government Obligations" means securities which are (i)
direct obligations of the United States of America or the government which
issued the Foreign Currency in which the Securities of a particular series are
payable, for the payment of which its full faith and credit is pledged or (ii)
obligations of a Person controlled or supervised by and acting as an agency or
instrumentality of the United States of America





                                       6
<PAGE>   16
or such government which issued the foreign currency in which the Securities of
such series are payable, the payment of which is unconditionally guaranteed as
a full faith and credit obligation by the United States of America or such
other government, which, in either case, are not callable or redeemable at the
option of the issuer thereof, and shall also include a depository receipt
issued by a bank or trust as custodian with respect to any such Government
Obligation or a specific payment of interest on or principal of any such
Government Obligation held by such custodian for the account of the holder of a
depository receipt, provided that (except as required by law) such custodian is
not authorized to make any deduction from the amount payable to the holder of
such depository receipt from any amount received by the custodian in respect of
the Government Obligation or the specific payment of interest on or principal
of the Government Obligation evidenced by such depository receipt.

                        "Holder" means, in the case of a Registered Security,
the Person in whose name a Security is registered in the Security Register and,
in the case of a Bearer Security, the bearer thereof and, when used with
respect to any coupon, shall mean the bearer thereof.

                        "Indenture" means this instrument as originally
executed or as it may from time to time be supplemented or amended by one or
more indentures supplemental hereto entered into pursuant to the applicable
provisions hereof, and shall include the terms of particular series of
Securities established as contemplated by Section 301; provided, however, that,
if at any time more than one Person is acting as Trustee under this instrument,
"Indenture" shall mean, with respect to any one or more series of Securities
for which such Person is Trustee, this instrument as originally executed or as
it may from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof
and shall include the terms of the or those particular series of Securities for
which such Person is Trustee established as contemplated by Section 301,
exclusive, however, of any provisions or terms which relate solely to other
series of Securities for which such Person is not Trustee, regardless of when
such terms or provisions were adopted, and exclusive of any provisions or terms
adopted by means of one or more indentures supplemental hereto executed and
delivered after such Person had become such Trustee but to which such Person,
as such Trustee, was not a party.

                        "Indexed Security" means a Security the terms of which
provide that the principal amount thereof payable at Stated Maturity may be
more or less than the principal face amount thereof at original issuance.

                        "Interest", when used with respect to an Original Issue
Discount Security which by its terms bears interest only after Maturity, shall
mean interest payable after Maturity, and, when used with respect to a Security
which provides for the payment of Additional Amounts pursuant to Section 1010,
includes such Additional Amounts.

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





                                       7
<PAGE>   17
                        "Maturity", when used with respect to any Security,
means the date on which the principal of such Security or an installment of
principal becomes due and payable as therein or herein provided, whether at the
Stated Maturity or by declaration of acceleration, notice of redemption, notice
of option to elect repayment or otherwise.

                        "Officer's Certificate" means a certificate signed by
an executive officer of the Trust, and delivered to the Trustee.

                        "Opinion of Counsel" means a written opinion of
counsel, who may be counsel for the Trust or who may be an employee of or other
counsel for the Trust and who shall be reasonably satisfactory to the Trustee.

                        "Original Issue Discount Security" means any 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 502.

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

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

                     (ii)  Securities, or portions thereof, for whose payment
                 or redemption or repayment at the option of the Holder money
                 in the necessary amount has been theretofore deposited with
                 the Trustee or any Paying Agent (other than the Trust) in
                 trust or set aside and segregated in trust by the Trust (if
                 the Trust shall act as its own Paying Agent) for the Holders
                 of such Securities and any coupons appertaining thereto,
                 provided that, if such 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)  Securities, except to the extent provided in
                 Sections 1402 and 1403, with respect to which the Trust has
                 effected defeasance and/or covenant defeasance as provided in
                 Article Fourteen;

                     (iv)  Securities which have been paid pursuant to Section
                 306 or in exchange for or in lieu of which other Securities
                 have been authenticated and delivered pursuant to this
                 Indenture, 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 Trust; and

                        (v)  Securities converted into Common Shares or
                 Preferred Shares pursuant to or in accordance with this
                 Indenture if the terms of such Securities provide for
                 convertibility pursuant to Section 301;





                                       8
<PAGE>   18
provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder or are present at
a meeting of Holders for quorum purposes, and for the purpose of making the
calculations required by TIA Section 313, (i) the principal amount of an
Original Issue Discount Security that may be counted in making such
determination or calculation and that shall be deemed to be Outstanding for
such purpose shall be equal to the amount of principal thereof that would be
(or shall have been declared to be) due and payable, at the time of such
determination, upon a declaration of acceleration of the maturity thereof
pursuant to Section 502, (ii) the principal amount of any Security denominated
in a Foreign Currency that may be counted in making such determination or
calculation and that shall be deemed Outstanding for such purpose shall be
equal to the Dollar equivalent, determined pursuant to Section 301 as of the
date such Security is originally issued by the Trust, of the principal amount
(or, in the case of an Original Issue Discount Security, the Dollar equivalent
as of such date of original issuance of the amount determined as provided in
clause (i) above) of such Security, (iii) the principal amount of any Indexed
Security that may be counted in making such determination or calculation and
that shall be deemed outstanding for such purpose shall be equal to the
principal face amount of such Indexed Security at original issuance, unless
otherwise provided with respect to such Security pursuant to Section 301, and
(iv) Securities owned by the Trust or any other obligor upon the Securities or
any Affiliate of the Trust 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 making such calculation or in relying upon any such
request, demand, authorization, direction, notice, consent or waiver, only
Securities which the Trustee knows to be so owned shall be so disregarded.
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 Securities and that the pledgee
is not the Trust or any other obligor upon the Securities or any Affiliate of
the Trust or of such other obligor.

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

                        "Person" means any individual, corporation,
partnership, 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
Securities of or within any series, means the place or places where the
principal of (and premium, if any) and interest on such Securities are payable
as specified as contemplated by Sections 301 and 1002.

                        "Predecessor Security" of any particular Security means
every previous Security evidencing all or a portion of the same debt as that
evidenced by such particular Security; and, for the purposes of this
definition, any Security authenticated and delivered under Section 306 in
exchange for or in lieu of a mutilated, destroyed, lost or stolen Security or a
Security to which a





                                       9
<PAGE>   19
mutilated, destroyed, lost or stolen coupon appertains shall be deemed to
evidence the same debt as the mutilated, destroyed, lost or stolen Security or
the Security to which the mutilated, destroyed, lost or stolen coupon
appertains.

                        "Preferred Shares" means, with respect to any Person,
capital shares issued by such Person that are entitled to a preference or
priority over any other capital shares issued by such Person upon any
distribution of such Person's assets, whether by dividend or upon liquidation.

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

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

                        "Registered Security" shall mean any Security which is
registered in the Security Register.

                        "Regular Record Date" for the interest payable on any
Interest Payment Date on the Registered Securities of or within any series
means the date specified for that purpose as contemplated by Section 301,
whether or not a Business Day.

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

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

                        "Responsible Officer", when used with respect to the
Trustee, means the chairman or vice-chairman of the board of directors, the
chairman or vice-chairman of the executive committee of the board of directors,
the president, any vice president (whether or not designated by a number or a
word or words added before or after the title "vice president"), the secretary,
any assistant secretary, the treasurer, any assistant treasurer, any corporate
trust officer, the controller or any other officer of the Trustee customarily
performing functions similar to those performed by any of the above designated
officers and also means, with respect to a particular corporate trust matter,
any other officer to whom such matter is referred because of such officer's
knowledge and familiarity with the particular subject.

                        "Securities Act" means the Securities Act of 1933, as
amended, and the rules and regulations promulgated thereunder by the
Commission.

                        "Security" has the meaning stated in the first recital
of this Indenture and, more particularly, means any Security or Securities
authenticated and delivered under this Indenture; provided, however, that, if
at any time there is more than one Person acting as Trustee under this





                                       10
<PAGE>   20
Indenture, "Securities" with respect to the Indenture as to which such Person
is Trustee shall have the meaning stated in the first recital of this Indenture
and shall more particularly mean Securities authenticated and delivered under
this Indenture, exclusive, however, of Securities of any series as to which
such Person is not Trustee.

                        "Security Register" and "Security Registrar" have the
respective meanings specified in Section 305.

                        "Significant Subsidiary" means any Subsidiary which is
a "significant subsidiary" (as defined in Article I, Rule 1-02 of Regulation
S-X, promulgated under the Securities Act of 1933) of the Trust.

                        "Special Record Date" for the payment of any Defaulted
Interest on the Registered Securities of or within any series means a date
fixed by the Trustee pursuant to Section 307.

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

                        "Subsidiary" means a corporation a majority of the
outstanding voting stock of which is owned, directly or indirectly, by the
Trust or by one or more other Subsidiaries of the Trust.  For the purposes of
this definition, "voting stock" means stock having voting power for the
election of directors, whether at all times or only so long as no senior class
of stock has such voting power by reason of any contingency.

                        "Total Assets" as of any date means the sum of (i) the
Undepreciated Real Estate Assets and (ii) all other assets of the Trust and its
Subsidiaries determined in accordance with GAAP (but excluding intangibles and
accounts receivable).

                        "Total Unencumbered Assets" means the sum of (i) those
Undepreciated Real Estate Assets not subject to an Encumbrance and (ii) all
other assets of the Trust and its Subsidiaries not subject to an Encumbrance,
determined in accordance with GAAP (but excluding intangibles and accounts
receivable).

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

                        "Trust Indenture Act" or "TIA" means the Trust
Indenture Act of 1939, as amended and as in force at the date as of which this
Indenture was executed, except as provided in Section 905.





                                       11
<PAGE>   21
                        "Trust Request and "Trust Order" mean, respectively, a
written request or order signed in the name of the Trust by one executive
officer of the Trust, and delivered to the Trustee.

                        "Trustee" means the Person named as the "Trustee" in
the first paragraph of this Indenture 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; provided, however, that if at any time there is more than one such
Person, "Trustee" as used with respect to the Securities of any series shall
mean only the Trustee with respect to Securities of that series.

                        "Undepreciated Real Estate Assets" as of any date means
the cost (original cost plus capital improvements) of real estate assets of the
Trust and its Subsidiaries on such date, before depreciation and amortization
determined on a consolidated basis in accordance with GAAP.

                        "United States" means, unless otherwise specified with
respect to any Securities pursuant to Section 301, the United States of America
(including the states and the District of Columbia), its territories, its
possessions and other areas subject to its jurisdiction.

                        "United States Person" means, unless otherwise
specified with respect to any Securities pursuant to Section 301, an individual
who is a citizen or resident of the United States, a corporation, partnership
or other entity created or organized in or under the laws of the United States
or an estate or trust the income of which is subject to United States federal
income taxation regardless of its source.

                        "Unsecured Debt" means Debt of the Trust or any
Subsidiary which is not secured by any mortgage, lien, charge, pledge or
security interest of any kind upon any of the properties owned by the Trust or
any of its Subsidiaries.

                        "Yield to Maturity" means the yield to maturity,
computed at the time of issuance of a Security (or, if applicable, at the most
recent redetermination of interest on such Security) and as set forth in such
Security in accordance with generally accepted United States bond yield
computation principles.

                        SECTION 102.  Compliance Certificates and Opinions.
Upon any application or request by the Trust to the Trustee to take any action
under any provision of this Indenture, the Trust shall furnish to the Trustee
an Officer's 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





                                       12
<PAGE>   22
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 (including
certificates delivered pursuant to Section 1009) shall include:

                        (1)     a statement that each individual signing such
                 certificate or opinion has read such condition or covenant and
                 the definitions 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 has made such examination or investigation as
                 is necessary to enable him to express an informed opinion as
                 to whether or not such condition or covenant 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 103.  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 as 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 Trust
may be based, insofar as it relates to legal matters, upon an Opinion of
Counsel, or a certificate or representations by counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the opinion,
certificate or representations with respect to the matters upon which his
certificate or opinion is based are erroneous.  Any such Opinion of Counsel or
certificate or representations 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 Trust stating that the information as to such factual matters
is in the possession of the Trust, unless such counsel knows that the
certificate or opinion or representations as to such matters are 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.





                                       13
<PAGE>   23
                        SECTION 104.  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 of the Outstanding
Securities of all series or one or more series, as the case may be, may be
embodied in and evidenced by one or more instruments of substantially similar
tenor signed by such Holders in person or by agents duly appointed in writing.
If Securities of a series are issuable 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 of Securities of
such series may, alternatively, be embodied in and evidenced by the record of
Holders of Securities of such series voting in favor thereof, either in person
or by proxies duly appointed in writing, at any meeting of Holders of
Securities of such series duly called and held in accordance with the
provisions of Article Fifteen, 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
Trust.  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 or so voting at any
such meeting.  Proof of execution of any such instrument or of a writing
appointing any such agent, or of the holding by any Person of a Security, shall
be sufficient for any purpose of this Indenture.  The record of any meeting of
Holders of Securities shall be proved in the manner provided in Section 1506.

                        (b)  The fact and date of the execution by any Person
of any such instrument or writing may be proved by the affidavit of a witness
of such execution or by a certificate of a notary public or other officer
authorized by law to take acknowledgments of deeds, certifying that the
individual signing such instrument or writing acknowledged to him the execution
thereof.  Where such execution is by a signer acting in a capacity other than
his individual capacity, such certificate or affidavit shall also constitute
sufficient proof of his authority.  The fact and date of the execution of any
such instrument or writing, or the authority of the Person executing the same,
may also be proved in any other reasonable manner which the Trustee deems
sufficient.

                        (c)  The ownership of Registered Securities shall be
proved by the Security Register.

                        (d)  The ownership of Bearer Securities 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 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 Trust 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





                                       14
<PAGE>   24
exchange for a Registered Security, or (4) such Bearer Security is no longer
Outstanding.  The ownership of Bearer Securities may also be proved in any
other manner which the Trustee deems sufficient.

                        (e)  If the Trust shall solicit from the Holders of
Registered Securities any request, demand, authorization, direction, notice,
consent, waiver or other Act, the Trust may, at its option, in or pursuant to a
Board Resolution, fix in advance a record date for the determination of Holders
entitled to give such request, demand, authorization, direction, notice,
consent, waiver or other Act, but the Trust shall have no obligation to do so.
Notwithstanding TIA Section 316(c), such record date shall be the record date
specified in or pursuant to such Board Resolution, which shall be a date not
earlier than the date 30 days prior to the first solicitation of Holders
generally in connection therewith and not later than the date such solicitation
is completed.  If such a record date is fixed, such request, demand,
authorization, direction, notice, consent, waiver or other Act may be given
before or after such record date, but only the Holders of record at the close
of business on such record date shall be deemed to be Holders for the purposes
of determining whether Holders of the requisite proportion of Outstanding
Securities have authorized or agreed or consented to such request, demand,
authorization, direction, notice, consent, waiver or other Act, and for that
purpose the Outstanding Securities shall be computed as of such record date;
provided that no such authorization, agreement or consent by the Holders on
such record date shall be deemed effective unless it shall become effective
pursuant to the provisions of this Indenture not later than eleven months after
the record date.

                 In the absence of any such record date fixed by the Trust,
regardless as to whether a solicitation of the Holders is occurring on behalf
of the Trust or any Holder, the Trustee may, at its option, fix in advance a
record date for the determination of such Holders entitled to give such
request, demand, authorization, direction, notice, consent, waiver or other
Act, but the Trustee shall have no obligation to do so.  Any such record date
shall be a date not more than 30 days prior to the first solicitation of
Holders generally in connection therewith no later than the date of such
solicitation.

                        (f)  Any request, demand, authorization, direction,
notice, consent, waiver or other Act of the Holder of any Security shall bind
every future Holder of the same Security and the Holder of every Security
issued upon the registration of transfer thereof or in exchange therefor or in
lieu thereof in respect of anything done, omitted or suffered to be done by the
Trustee, any Security Registrar, any Paying Agent, any Authenticating Agent or
the Trust in reliance thereon, whether or not notation of such action is made
upon such Security.

                        SECTION 105.  Notices, etc., to Trustee and Trust.  Any
request, demand, authorization, direction, notice, consent, waiver or 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 Trust shall
                 be sufficient for every purpose hereunder if made, given,
                 furnished or filed in writing to or with the Trustee, c/o





                                       15
<PAGE>   25
                 First Chicago Trust Company of New York,   at 14 Wall Street,
                 Eighth Floor-Window 2, New York, New York 10005; Attention:
                 Corporate Trust Administration.

                        (2)     the Trust 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 Trust addressed to it at the
                 address of its principal office specified in the first
                 paragraph of this Indenture or at any other address previously
                 furnished in writing to the Trustee by the Trust.

                        SECTION 106.  Notice to Holders; Waiver.  Where this
Indenture provides for notice of any event to Holders of Registered Securities
by the Trust or the Trustee, such notice shall be sufficiently given (unless
otherwise herein expressly provided) if in writing and mailed, first-class
postage prepaid, to each such Holder affected by such event, at his 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.  In
any case where notice to Holders of Registered Securities is given by mail,
neither the failure to mail such notice, nor any defect in any notice so
mailed, to any particular Holder shall affect the sufficiency of such notice
with respect to other Holders of Registered Securities or the sufficiency of
any notice to Holders of Bearer Securities given as provided herein.  Any
notice mailed to a Holder in the manner herein prescribed shall be conclusively
deemed to have been received by such Holder, whether or not such Holder
actually receives such notice.

                        If by reason of the suspension of or irregularities in
regular mail service or by reason of any other cause it shall be impracticable
to give such notice by mail, then such notification to Holders of Registered
Securities as shall be made with the approval of the Trustee shall constitute a
sufficient notification to such Holders for every purpose hereunder.

                        Except as otherwise expressly provided herein or
otherwise specified with respect to any Securities pursuant to Section 301,
where this Indenture provides for notice to Holders of Bearer Securities of any
event, such notice shall be sufficiently given if published in an Authorized
Newspaper in New York City and in such other city or cities as may be specified
in such Securities on a Business Day, such publication to be not later than the
latest date, and not earlier than the earliest date, prescribed for the giving
of such notice.  Any such notice shall be deemed to have been given on the date
of such publication or, if published more than once, on the date of the first
such publication.

                        If by reason of the suspension of publication of any
Authorized Newspaper or Authorized Newspapers or by reason of any other cause
it shall be impracticable to publish any notice to Holders of Bearer Securities
as provided above, then such notification to Holders of Bearer Securities as
shall be given with the approval of the Trustee shall constitute sufficient
notice to such Holders for every purpose hereunder.  Neither the failure to
give notice by publication to any particular Holder of Bearer Securities as
provided above, nor any defect in any notice so published, shall affect the
sufficiency of such notice with respect to other Holders of





                                       16
<PAGE>   26
Bearer Securities or the sufficiency of any notice to Holders of Registered
Securities given as provided herein.

                        Any request, demand, authorization, direction, notice,
consent or waiver 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.

                        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.

                        SECTION 107.  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 108.  Successors and Assigns.  All covenants
and agreements in this Indenture by the Trust shall bind its successors and
assigns, whether so expressed or not.

                        SECTION 109.  Separability Clause.  In case any
provision in this Indenture or in any Security or coupon 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 110.  Benefits of Indenture.  Nothing in this
Indenture or in the Securities or coupons, express or implied, shall give to
any Person, other than the parties hereto, any Security Registrar, any Paying
Agent, any Authenticating Agent and their successors hereunder and the Holders
any benefit or any legal or equitable right, remedy or claim under this
Indenture.

                        SECTION 111.  Governing Law.  This Indenture and the
Securities and coupons shall be governed by and construed in accordance with
the law of the State of New York.  This Indenture is subject to the provisions
of the TIA that are required to be part of this Indenture and shall, to the
extent applicable, be governed by such provisions.

                        SECTION 112.  Legal Holidays.  In any case where any
Interest Payment Date, Redemption Date, Repayment Date, sinking fund payment
date, Stated Maturity or Maturity of any Security shall not be a Business Day
at any Place of Payment, then (notwithstanding any other provision of this
Indenture or any Security or coupon other than a provision in the Securities of
any series which specifically states that such provision shall apply in lieu
hereof), payment of interest or any Additional Amounts 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





                                       17
<PAGE>   27
Date, Redemption Date, Repayment Date or sinking fund payment date, or at the
Stated Maturity or Maturity, provided that no interest shall accrue on the
amount so payable for the period from and after such Interest Payment Date,
Redemption Date, Repayment Date, sinking fund payment date, Stated Maturity or
Maturity, as the case may be.

                        SECTION 113.  Immunity of Shareholders, Trustees,
Officers and Agents of the Trust.  The obligations of the Trust under the
Indenture and the Securities and all documents delivered in the name of the
Trust in connection herewith and therewith do not and shall not constitute
personal obligations of the trustees, officers, employees, agents or
shareholders of the Trust or any of them, and shall not involve any claim
against or personal liability on the part of any of them, and all persons
including the Trustee shall look solely to the assets of the Trust for the
payment of any claim thereunder or for the performance thereof and shall not
seek recourse against such trustees, officers, employees, agents or
shareholders of the Trust or any of them or any of their personal assets for
such satisfaction.  The performance of the obligations of the Trust under the
Indenture and the Securities and all documents delivered in the name of the
Trust in connection therewith shall not be deemed a waiver of any rights or
powers of the Trust, trustees or shareholders under the Trust's Declaration of
Trust.


                                  ARTICLE TWO

                                SECURITIES FORMS

                        SECTION 201.  Forms of Securities.  The Registered
Securities, if any, of each series and the Bearer Securities, if any, of each
series and related coupons shall be in substantially the forms as shall be
established in one or more indentures supplemental hereto or approved from time
to time by or pursuant to a Board Resolution in accordance with Section 301,
shall have such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture or any indenture
supplemental hereto, and may have such letters, numbers or other marks of
identification or designation and such legends or endorsements placed thereon
as the Trust may deem appropriate and as are not inconsistent with the
provisions of this Indenture, or as may be required to comply with any law or
with any rule or regulation made pursuant thereto or with any rule or
regulation of any stock exchange on which the Securities may be listed, or to
conform to usage.

                        Unless otherwise specified as contemplated by Section
301, Bearer Securities shall have interest coupons attached.

                        The definitive Securities and coupons shall be printed,
lithographed or engraved or produced by any combination of these methods on a
steel engraved border or steel engraved borders or may be produced in any other
manner, all as determined by the officers executing such Securities or coupons,
as evidenced by their execution of such Securities or coupons.





                                       18
<PAGE>   28
                        SECTION 202.  Form of Trustee's Certificate of
Authentication.  Subject to Section 611, the Trustee's certificate of
authentication shall be in substantially the following form:

                 This is one of the Securities of the series designated therein
referred to in the within-mentioned Indenture.

                       THE FIRST NATIONAL BANK OF CHICAGO
                                   as Trustee


                           By
                              ----------------------
                               Authorized Signatory


                        SECTION 203.  Securities Issuable in Global Form.  If
Securities of or within a series are issuable in global form, as specified as
contemplated by Section 301, then, notwithstanding clause (8) of Section 301
and the provisions of Section 302, any such Security shall represent such of
the Outstanding Securities of such series as shall be specified therein and may
provide that it shall represent the aggregate amount of Outstanding Securities
of such series from time to time endorsed thereon and that the aggregate amount
of Outstanding Securities of such series represented thereby may from time to
time be increased or decreased to reflect exchanges.  Any endorsement of a
Security in global form to reflect the amount, or any increase or decrease in
the amount, of Outstanding Securities represented thereby shall be made by the
Trustee in such manner and upon instructions given by such Person or Persons as
shall be specified therein or in the Trust Order to be delivered to the Trustee
pursuant to Section 303 or 304.  Subject to the provisions of Section 303 and,
if applicable, Section 304, the Trustee shall deliver and redeliver any
Security in permanent global form in the manner and upon instructions given by
the Person or Persons specified therein or in the applicable Trust Order.  If a
Trust Order pursuant to Section 303 or 304 has been, or simultaneously is,
delivered, any instructions by the Trust with respect to endorsement or
delivery or redelivery of a Security in global form shall be in writing but
need not comply with Section 102 and need not be accompanied by an Opinion of
Counsel.

                        The provisions of the last sentence of Section 303
shall apply to any Security represented by a Security in global form if such
Security was never issued and sold by the Trust and the Trust delivers to the
Trustee the Security in global form together with written instructions (which
need not comply with Section 102 and need not be accompanied by an Opinion of
Counsel) with regard to the reduction in the principal amount of Securities
represented thereby, together with the written statement contemplated by the
last sentence of Section 303.

                        Notwithstanding the provisions of Section 307, unless
otherwise specified as contemplated by Section 301, payment of principal of and
any premium and interest on any Security in permanent global form shall be made
to the Person or Persons specified therein.





                                       19
<PAGE>   29
                        Notwithstanding the provisions of Section 308 and
except as provided in the preceding paragraph, the Trust, the Trustee and any
agent of the Trust and the Trustee shall treat as the Holder of such principal
amount of Outstanding Securities represented by a permanent global Security (i)
in the case of a permanent global Security in registered form, the Holder of
such permanent global Security in registered form, or (ii) in the case of a
permanent global Security in bearer form, Euroclear or CEDEL.


                                 ARTICLE THREE

                                 THE SECURITIES

                        SECTION 301.  Amount Unlimited; Issuable in Series.
The aggregate principal amount of Securities which may be authenticated and
delivered under this Indenture is unlimited.

                        The Securities may be issued in one or more series.
There shall be established in one or more Board Resolutions or pursuant to
authority granted by one or more Board Resolutions and, subject to Section 303,
set forth, or determined in the manner provided, in an Officer's Certificate,
or established in one or more indentures supplemental hereto, prior to the
issuance of Securities of any series, any or all of the following, as
applicable (each of which (except for the matters set forth in clauses (1), (2)
and (15) below), if so provided, may be determined from time to time by the
Trust with respect to unissued Securities of the series when issued from time
to time):

                        (1)     the title of the Securities of the series
                 (which shall distinguish the Securities of such series from
                 all other series of Securities);

                        (2)     any limit upon the aggregate principal amount
                 of the Securities of the series that may be authenticated and
                 delivered under this Indenture (except for Securities
                 authenticated and delivered upon registration of transfer of,
                 or in exchange for, or in lieu of, other Securities of the
                 series pursuant to Section 304, 305, 306, 906, 1107 or 1305);

                        (3)     the date or dates, or the method by which such
                 date or dates will be determined, on which the principal of
                 the Securities of the series shall be payable;

                        (4)     the rate or rates at which the Securities of
                 the series shall bear interest, if any, or the method by which
                 such rate or rates shall be determined, the date or dates from
                 which such interest shall accrue or the method by which such
                 date or dates shall be determined, the Interest Payment Dates
                 on which such interest will be payable and the Regular Record
                 Date, if any, for the interest payable on any Registered
                 Security on any Interest Payment Date, or the method by which
                 such date shall be determined, and the basis upon which
                 interest shall be calculated if other than that of a 360-day
                 year of twelve 30-day months;





                                       20
<PAGE>   30
                      (5)     the place or places, if any, other than or in
                 addition to the Borough of Manhattan, New York City, where the
                 principal of (and premium, if any), interest, if any, on, and
                 Additional Amounts, if any, payable in respect of, Securities
                 of the series shall be payable, any Registered Securities of
                 the series may be surrendered for registration of transfer,
                 exchange or conversion and notices or demands to or upon the
                 Trust in respect of the Securities of the series and this
                 Indenture may be served;

                      (6)     the period or periods within which, the price
                 or prices at which, the currency or currencies, currency unit
                 or units or composite currency or currencies in which, and
                 other terms and conditions upon which Securities of the series
                 may be redeemed, in whole or in part, at the option of the
                 Trust, if the Trust is to have the option;

                      (7)     the obligation, if any, of the Trust to redeem,
                 repay or purchase Securities of the series pursuant to any
                 sinking fund or analogous provision or at the option of a
                 Holder thereof, and the period or periods within which or the
                 date or dates on which, the price or prices at which, the
                 currency or currencies, currency unit or units or composite
                 currency or currencies in which, and other terms and
                 conditions upon which Securities of the series shall be
                 redeemed, repaid or purchased, in whole or in part, pursuant
                 to such obligation;

                      (8)     if other than denominations of $1,000 and any
                 integral multiple thereof, the denominations in which any
                 Registered Securities of the series shall be issuable and, if
                 other than the denomination of $5,000, the denomination or
                 denominations in which any Bearer Securities of the series
                 shall be issuable;

                      (9)     if other than the Trustee, the identity of each 
                 Security Registrar and/or Paying Agent;

                     (10)       if other than the principal amount thereof, the
                 portion of the principal amount of Securities of the series
                 that shall be payable upon declaration of acceleration of the
                 Maturity thereof pursuant to Section 502 or, if applicable,
                 the portion of the principal amount of Securities of the
                 series that is convertible in accordance with the provisions
                 of this Indenture, or the method by which such portion shall
                 be determined;

                     (11)       if other than Dollars, the Foreign Currency or
                 Currencies in which payment of the principal of (and premium,
                 if any) or interest or Additional Amounts, if any, on the
                 Securities of the series shall be payable or in which the
                 Securities of the series shall be denominated;

                     (12)  whether the amount of payments of principal of (and
                 premium, if any) or interest, if any, on the Securities of the
                 series may be determined with reference to an index, formula
                 or other method (which index, formula or method may be based,
                 without limitation, on one or more currencies, currency units,
                 composite currencies, commodities, equity indices or other
                 indices), and the manner in which such amounts shall be
                 determined;





                                       21
<PAGE>   31
                     (13)  whether the principal of (and premium, if any) or
                 interest or Additional Amounts, if any, on the Securities of
                 the series are to be payable, at the election of the Trust or
                 a Holder thereof, in a currency or currencies, currency unit
                 or units or composite currency or currencies other than that
                 in which such Securities are denominated or stated to be
                 payable, the period or periods within which, and the terms and
                 conditions upon which, such election may be made, and the time
                 and manner of, and identity of the exchange rate agent with
                 responsibility for, determining the exchange rate between the
                 currency or currencies, currency unit or units or composite
                 currency or currencies in which such Securities are
                 denominated or stated to be payable and the currency or
                 currencies, currency unit or units or composite currency or
                 currencies in which such Securities are to be so payable;

                     (14)  provisions, if any, granting special rights to the
                 Holders of Securities of the series upon the occurrence of
                 such events as may be specified;

                     (15)  any deletions from, modifications of or additions to
                 the Events of Default or covenants of the Trust with respect
                 to Securities of the series, whether or not such Events of
                 Default or covenants are consistent with the Events of Default
                 or covenants set forth herein;

                     (16)  whether Securities of the series are to be issuable
                 as Registered Securities, Bearer Securities (with or without
                 coupons) or both, any restrictions applicable to the offer,
                 sale or delivery of Bearer Securities and the terms upon which
                 Bearer Securities of the series may be exchanged for
                 Registered Securities of the series and vice versa (if
                 permitted by applicable laws and regulations), whether any
                 Securities of the series are to be issuable initially in
                 temporary global form and whether any Securities of the series
                 are to be issuable in permanent global form with or without
                 coupons and, if so, whether beneficial owners of interests in
                 any such permanent global Security may exchange such interests
                 for Securities of such series and of like tenor of any
                 authorized form and denomination and the circumstances under
                 which any such exchanges may occur, if other than in the
                 manner provided in Section 305, and, if Registered Securities
                 of the series are to be issuable as a global Security, the
                 identity of the depositary for such series;

                     (17)  the date as of which any Bearer Securities of the
                 series and any temporary global Security representing
                 Outstanding Securities of the series shall be dated if other
                 than the date of original issuance of the first Security of
                 the series to be issued;

                     (18)  the Person to whom any interest on any Registered
                 Security of the series shall be payable, if other than the
                 Person in whose name that Security (or one or more Predecessor
                 Securities) is registered at the close of business on the
                 Regular Record Date for such interest, the manner in which, or
                 the Person to whom, any interest on any Bearer Security of the
                 series shall be payable, if otherwise than upon presentation
                 and surrender of the coupons appertaining thereto as they
                 severally mature, and the extent to which, or the





                                       22
<PAGE>   32
                 manner in which, any interest payable on a temporary global
                 Security on an Interest Payment Date will be paid if other
                 than in the manner provided in Section 304;

                     (19)  the applicability, if any, of Sections 1402 and/or
                 1403 to the Securities of the series and any provisions in
                 modification of, in addition to or in lieu of any of the
                 provisions of Article Fourteen;

                     (20)  if the Securities of such series are to be issuable
                 in definitive form (whether upon original issue or upon
                 exchange of a temporary Security of such series) only upon
                 receipt of certain certificates or other documents or
                 satisfaction of other conditions, then the form and/or terms
                 of such certificates, documents or conditions;

                     (21)  whether and under what circumstances the Trust will
                 pay Additional Amounts as contemplated by Section 1010 on the
                 Securities of the series to any Holder who is not a United
                 States person (including any modification to the definition of
                 such term) in respect of any tax, assessment or governmental
                 charge and, if so, whether the Trust will have the option to
                 redeem such Securities rather than pay such Additional Amounts
                 (and the terms of any such option);

                     (22)  the obligation, if any, of the Trust to permit the
                 conversion of the Securities of such series into the Trust's
                 Common Shares or Preferred Shares, as the case may be, and the
                 terms and conditions upon which such conversion shall be
                 effected (including, without limitation, the initial
                 conversion price or rate, the conversion period, any
                 adjustment of the applicable conversion price and any
                 requirements relative to the reservation of such shares for
                 purposes of conversion); and

                     (23)  any other terms of the series (which terms shall not
                 be inconsistent with the provisions of this Indenture).

                        All Securities of any one series and the coupons
appertaining to any Bearer Securities of such series 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
(subject to Section 303) and set forth in such Officer's Certificate or in any
such indenture supplemental hereto.  All Securities of any one series need not
be issued at the same time and, unless otherwise provided, a series may be
reopened, without the consent of the Holders, for issuances of additional
Securities of such series.

                        If any of the terms of the Securities of any series are
established by action taken pursuant to one or more Board Resolutions, a copy
of an appropriate record of such action(s) shall be certified by the Secretary
or an Assistant Secretary of the Trust and delivered to the Trustee at or prior
to the delivery of the Officer's Certificate setting forth the terms of the
Securities of such series.





                                       23
<PAGE>   33
                        SECTION 302.  Denominations.  The Securities of each
series shall be issuable in such denominations as shall be specified as
contemplated by Section 301.  With respect to Securities of any series
denominated in Dollars, in the absence of any such provisions with respect to
the Securities of any series, the Registered Securities of such series, other
than Registered Securities issued in global form (which may be of any
denomination), shall be issuable in denominations of $1,000 and any integral
multiple thereof and the Bearer Securities of such series, other than Bearer
Securities issued in global form (which may be of any denomination), shall be
issuable in a denomination of $5,000.

                        SECTION 303.  Execution, Authentication, Delivery and
Dating.  The Securities and any coupons appertaining thereto shall be executed
on behalf of the Trust by an executive officer of the Trust and attested by its
Secretary or one of its Assistant Secretaries.  The signature of any of these
individuals on the Securities and coupons may be manual or facsimile signatures
of the present or any future such authorized officer and may be imprinted or
otherwise reproduced on the Securities.

                        Securities or coupons bearing the manual or facsimile
signatures of individuals who were at any time the proper officers of the Trust
shall bind the Trust, notwithstanding that such individuals or any of them have
ceased to hold such offices prior to the authentication and delivery of such
Securities or did not hold such offices at the date of such Securities or
coupons.

                        At any time and from time to time after the execution
and delivery of this Indenture, the Trust may deliver Securities of any series,
together with any coupon appertaining thereto, executed by the Trust to the
Trustee for authentication, together with a Trust Order for the authentication
and delivery of such Securities, and the Trustee in accordance with the Trust
Order shall authenticate and deliver such Securities; provided, however, that,
in connection with its original issuance, no Bearer Security shall be mailed or
otherwise delivered to any location in the United States; and provided further
that, unless otherwise specified with respect to any series of Securities
pursuant to Section 301, a Bearer Security may be delivered in connection with
its original issuance only if the Person entitled to receive such Bearer
Security shall have furnished a certificate to Euroclear or Cedel, as the case
may be, in the form set forth in Exhibit A-1 to this Indenture or such other
certificate as may be specified with respect to any series of Securities
pursuant to Section 301, dated no earlier than 15 days prior to the earlier of
the date on which such Bearer Security is delivered and the date on which any
temporary Security first becomes exchangeable for such Bearer Security in
accordance with the terms of such temporary Security and this Indenture.  If
any Security shall be represented by a permanent global Bearer Security, then,
for purposes of this Section and Section 304, the notation of a beneficial
owner's interest therein upon original issuance of such Security or upon
exchange of a portion of a temporary global Security shall be deemed to be
delivery in connection with its original issuance of such beneficial owner's
interest in such permanent global Security.  Except as permitted by Section
306, the Trustee shall not authenticate and deliver any Bearer Security unless
all appurtenant coupons for interest then matured have been detached and
canceled.





                                       24
<PAGE>   34
                        If all the Securities of any series are not to be
issued at one time and if the Board Resolution or supplemental indenture
establishing such series shall so permit, such Trust Order may set forth
procedures acceptable to the Trustee for the issuance of such Securities and
determining the terms of particular Securities of such series, such as interest
rate or formula, maturity date, date of issuance and date from which interest
shall accrue.  In authenticating such Securities, and accepting the additional
responsibilities under this Indenture in relation to such Securities, the
Trustee shall be entitled to receive, and (subject to TIA Section 315(a)
through 315(d)) shall be fully protected in relying upon,

                      (i)  an Opinion of Counsel stating that

                                (a)      the form or forms of such Securities
                        and any coupons have been established in conformity
                        with the provisions of this Indenture;

                                (b)      the terms of such Securities and any
                        coupons have been established in conformity with the
                        provisions of this Indenture; and

                                (c)      such Securities, together with any
                        coupons appertaining thereto, when completed by
                        appropriate insertions and executed and delivered by
                        the Trust to the Trustee for authentication in
                        accordance with this Indenture, authenticated and
                        delivered by the Trustee in accordance with this
                        Indenture and issued by the Trust in the manner and
                        subject to any conditions specified in such Opinion of
                        Counsel, will constitute legal, valid and binding
                        obligations of the Trust, enforceable in accordance
                        with their terms, subject to applicable bankruptcy,
                        insolvency, reorganization and other similar laws of
                        general applicability relating to or affecting the
                        enforcement of creditors' rights generally and to
                        general equitable principles; and

                     (ii)  an Officer's Certificate stating that all conditions
                 precedent provided for in this Indenture relating to the
                 issuance of the Securities have been complied with and that,
                 to the best of the knowledge of the signers of such
                 certificate, no Event of Default with respect to any of the
                 Securities shall have occurred and be continuing.

If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustee's own rights, duties,
obligations or immunities under the Securities and this Indenture or otherwise
in a manner which is not reasonably acceptable to the Trustee.

                        Notwithstanding the provisions of Section 301 and of
the preceding paragraph, if all the Securities of any series are not to be
issued at one time, it shall not be necessary to deliver an Officer's
Certificate otherwise required pursuant to Section 301 or a Trust Order, or an
Opinion of Counsel or an Officer's Certificate otherwise required pursuant to
the preceding paragraph at the time of issuance of each Security of such
series, but such order, opinion and





                                       25
<PAGE>   35
certificates, with appropriate modifications to cover such future issuances,
shall be delivered at or before the time of issuance of the first Security of
such series.

                        Each Registered Security shall be dated the date of its
authentication and each Bearer Security shall be dated as of the date specified
as contemplated by Section 301.

                        No Security or coupon shall be entitled to any benefit
under this Indenture or be valid or obligatory for any purpose unless there
appears on such Security or Security to which such coupon appertains a
certificate of authentication substantially in the form provided for herein
duly executed by the Trustee by manual signature of an authorized signatory,
and such certificate upon any Security shall be conclusive evidence, and the
only evidence, that such Security has been duly authenticated and delivered
hereunder and is entitled to the benefits of this Indenture.  Notwithstanding
the foregoing, if any Security shall have been authenticated and delivered
hereunder but never issued and sold by the Trust, and the Trust shall deliver
such Security to the Trustee for cancellation as provided in Section 309
together with a written statement (which need not comply with Section 102 and
need not be accompanied by an Opinion of Counsel) stating that such Security
has never been issued and sold by the Trust, for all purposes of this Indenture
such Security shall be deemed never to have been authenticated and delivered
hereunder and shall never be entitled to the benefits of this Indenture.

                        SECTION 304.  Temporary Securities.  (a)  Pending the
preparation of definitive Securities of any series, the Trust may execute, and
upon Trust Order the Trustee shall authenticate and deliver, temporary
Securities which are printed, lithographed, typewritten, mimeographed or
otherwise produced, in any authorized denomination, substantially of the tenor
of the definitive 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 Securities may determine, as
conclusively evidenced by their execution of such Securities.  In the case of
Securities of any series, such temporary Securities may be in global form.

                        Except in the case of temporary Securities in global
form (which shall be exchanged in accordance with Section 304(b) or as
otherwise provided in or pursuant to a Board Resolution), if temporary
Securities of any series are issued, the Trust will cause definitive Securities
of that series to be prepared without unreasonable delay.  After the
preparation of definitive Securities of such series, the temporary Securities
of such series shall be exchangeable for definitive Securities of such series
upon surrender of the temporary Securities of such series at the office or
agency of the Trust in a Place of Payment for that series, without charge to
the Holder.  Upon surrender for cancellation of any one or more temporary
Securities of any series (accompanied by any non-matured coupons appertaining
thereto), the Trust shall execute and the Trustee shall authenticate and
deliver in exchange therefor a like principal amount of definitive Securities
of the same series 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 definitive Bearer Security
shall be delivered in exchange for a temporary Bearer





                                       26
<PAGE>   36
Security only in compliance with the conditions set forth in Section 303.
Until so exchanged, the temporary Securities of any series shall in all
respects be entitled to the same benefits under this Indenture as definitive
Securities of such series.

                        (b)  Unless otherwise provided in or pursuant to a
Board Resolution, this Section 304(b) shall govern the exchange of temporary
Securities issued in global form other than through the facilities of The
Depository Trust Company.  If any such temporary Security is issued in global
form, then such temporary global Security shall, unless otherwise provided
therein, be delivered to the London office of a depositary or common depositary
(the "Common Depositary"), for the benefit of Euroclear and CEDEL, for credit
to the respective accounts of the beneficial owners of such Securities (or to
such other accounts as they may direct).

                        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 "Exchange Date"), the Trust shall deliver to the
Trustee definitive Securities, in aggregate principal amount equal to the
principal amount of such temporary global Security, executed by the Trust.  On
or after the Exchange Date, such temporary global Security shall be surrendered
by the Common Depositary to the Trustee, as the Trust's agent for such purpose,
to be exchanged, in whole or from time to time in part, for definitive
Securities without charge, and the Trustee shall authenticate and deliver, in
exchange for each portion of such temporary global Security, an equal aggregate
principal amount of definitive Securities of the same series of authorized
denominations and of like tenor as the portion of such temporary global
Security to be exchanged.  The definitive Securities to be delivered in
exchange for any such temporary global Security shall be in bearer form,
registered form, permanent global bearer form or permanent global registered
form, or any combination thereof, as specified as contemplated by Section 301,
and, if any combination thereof is so specified, as requested by the beneficial
owner thereof; provided, however, that, unless otherwise specified in such
temporary global Security, upon such presentation by the Common Depositary,
such temporary global Security is accompanied by a certificate dated the
Exchange Date or a subsequent date and signed by Euroclear as to the portion of
such temporary global Security held for its account then to be exchanged and a
certificate dated the Exchange Date or a subsequent date and signed by CEDEL 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 A-2 to this Indenture or in
such other form as may be established pursuant to Section 301; and provided
further that definitive Bearer Securities shall be delivered in exchange for a
portion of a temporary global Security only in compliance with the requirements
of Section 303.

                        Unless otherwise specified in such temporary global
Security, the interest of a beneficial owner of Securities of a series in a
temporary global Security shall be exchanged for definitive Securities of the
same series and of like tenor following the Exchange Date when the account
holder instructs Euroclear or CEDEL, as the case may be, to request such
exchange on his behalf and delivers to Euroclear or CEDEL, as the case may be,
a certificate in the form set forth in Exhibit A-1 to this Indenture (or in
such other form as may be established pursuant to Section 301), dated no
earlier than 15 days prior to the Exchange Date, copies of which





                                       27
<PAGE>   37
certificate shall be available from the offices of Euroclear and CEDEL, the
Trustee, any Authenticating Agent appointed for such series of 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 Securities must bear the cost of insurance, postage, transportation
and the like unless such Person takes delivery of such definitive Securities in
person at the offices of Euroclear or CEDEL.  Definitive 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.

                        Until exchanged in full as hereinabove provided, the
temporary Securities of any series shall in all respects be entitled to the
same benefits under this Indenture as definitive Securities of the same series
and of like tenor authenticated and delivered hereunder, except that, unless
otherwise specified as contemplated by Section 301, interest payable on a
temporary global Security on an Interest Payment Date for Securities of such
series occurring prior to the applicable Exchange Date shall be payable to
Euroclear and CEDEL on such Interest Payment Date upon delivery by Euroclear
and CEDEL to the Trustee of a certificate or certificates in the form set forth
in Exhibit A-2 to this Indenture (or in such other forms as may be established
pursuant to Section 301), for credit without further interest on or after such
Interest Payment Date to the respective accounts of 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, as the case may be, a
certificate dated no earlier than 15 days prior to the Interest Payment Date
occurring prior to such Exchange Date in the form set forth as Exhibit A-1 to
this Indenture (or in such other forms as may be established pursuant to
Section 301).  Notwithstanding anything to the contrary herein contained, the
certifications made pursuant to this paragraph shall satisfy the certification
requirements of the preceding two paragraphs of this Section 304(b) and of the
third paragraph of Section 303 of this Indenture and the interests of the
Persons who are the beneficial owners of the temporary global Security with
respect to which such certification was made will be exchanged for definitive
Securities of the same series and of like tenor on the Exchange Date or the
date of certification if such date occurs after the Exchange Date, without
further act or deed by such beneficial owners.  Except as otherwise provided in
this paragraph, no payments of principal or interest owing with respect to a
beneficial interest in a temporary global Security will be made unless and
until such interest in such temporary global Security shall have been exchanged
for an interest in a definitive Security.  Any interest so received by
Euroclear and CEDEL and not paid as herein provided shall be returned to the
Trustee prior to the expiration of two years after such Interest Payment Date
in order to be repaid to the Trust.

                        SECTION 305.  Registration, Registration of Transfer
and Exchange.  The Trust shall cause to be kept at the Corporate Trust Office
of the Trustee or in any office or agency of the Trust in a Place of Payment a
register for each series of Securities (the registers maintained in such office
or in any such office or agency of the Trust in a Place of Payment being herein
sometimes referred to collectively as the "Security Register") in which,
subject to such reasonable regulations as it may prescribe, the Trust shall
provide for the registration of Registered Securities and of transfers of





                                       28
<PAGE>   38
Registered Securities.  The Security Register shall be in written form or any
other form capable of being converted into written form within a reasonable
time.  The Trustee, at its Corporate Trust Office, is hereby appointed
"Security Registrar" for the purpose of registering Registered Securities and
transfers of Registered Securities on such Security Register as herein
provided.  In the event that the Trustee shall cease to be Security Registrar,
it shall have the right to examine the Security Register at all reasonable
times.

                        Subject to the provisions of this Section 305, upon
surrender for registration of transfer of any Registered Security of any series
at any office or agency of the Trust in a Place of Payment for that series, the
Trust 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 denominations and of a like
aggregate principal amount, bearing a number not contemporaneously outstanding,
and containing identical terms and provisions.

                        Subject to the provisions of this Section 305, 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 and of a like aggregate principal amount, containing identical
terms and provisions, upon surrender of the Registered Securities to be
exchanged at any such office or agency.  Whenever any such Registered
Securities are so surrendered for exchange, the Trust shall execute, and the
Trustee shall authenticate and deliver, the Registered Securities which the
Holder making the exchange is entitled to receive.  Unless otherwise specified
with respect to any series of Securities as contemplated by Section 301, Bearer
Securities may not be issued in exchange for Registered Securities.

                        If (but only if) permitted by the applicable Board
Resolution and (subject to Section 303) set forth in the applicable Officers'
Certificate, or in any indenture supplemental hereto, delivered as contemplated
by Section 301, at the option of the Holder, Bearer Securities of any series
may be exchanged for Registered Securities of the same series of any authorized
denominations and of a like aggregate principal amount and tenor, 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, any such
permitted exchange may be effected if the Bearer Securities are accompanied by
payment in funds acceptable to the Trust 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 Trust and the Trustee if there is 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 1002, 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 a
permitted exchange for a Registered





                                       29
<PAGE>   39
Security of the same series and like tenor after the close of business at such
office or agency on (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 proposed date for payment of Defaulted Interest, such
Bearer Security shall be surrendered without the coupon relating to such
Interest Payment Date or proposed date for payment, as the case may be, and
interest or Defaulted Interest, as the case may be, will not be payable on such
Interest Payment Date or proposed date for payment, as the case may be, 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.  Whenever any Securities are so
surrendered for exchange, the Trust shall execute, and the Trustee shall
authenticate and deliver, the Securities which the Holder making the exchange
is entitled to receive.

                        Notwithstanding the foregoing, except as otherwise
specified as contemplated by Section 301, any permanent global Security shall
be exchangeable only as provided in this paragraph.  If the depositary for any
permanent global Security is The Depository Trust Company ("DTC"), then, unless
the terms of such global Security expressly permit such global Security to be
exchanged in whole or in part for definitive Securities, a global Security may
be transferred, in whole but not in part, only to a nominee of DTC, or by a
nominee of DTC to DTC, or to a successor to DTC for such global Security
selected or approved by the Trust or to a nominee of such successor to DTC.  If
at any time DTC notifies the Trust that it is unwilling or unable to continue
as depositary for the applicable global Security or Securities or if at any
time DTC ceases to be a clearing agency registered under the Securities
Exchange Act of 1934 if so required by applicable law or regulation, the Trust
shall appoint a successor depositary with respect to such global Security or
Securities.  If (x) a successor depositary for such global Security or
Securities is not appointed by the Trust within 90 days after the Trust
receives such notice or becomes aware of such unwillingness, inability or
ineligibility, (y) an Event of Default has occurred and is continuing and the
beneficial owners representing a majority in principal amount of the applicable
series of Securities represented by such global Security or Securities advise
DTC to cease acting as depositary for such global Security or Securities or (z)
the Trust, in its sole discretion, determines at any time that all Outstanding
Securities (but not less than all) of any series issued or issuable in the form
of one or more global Securities shall no longer be represented by such global
Security or Securities, then the Trust shall execute, and the Trustee shall
authenticate and deliver definitive Securities of like series, rank, tenor and
terms in definitive form in an aggregate principal amount equal to the
principal amount of such global Security or Securities.  If any beneficial
owner of an interest in a permanent global Security is otherwise entitled to
exchange such interest for Securities of such series and of like tenor and
principal amount of another authorized form and denomination, as specified as
contemplated by Section 301 and provided that any applicable notice provided in
the permanent global Security shall have been given, then without unnecessary
delay but in any event not later than the earliest date on which such interest
may be so exchanged, the Trust shall execute, and the Trustee shall
authenticate and deliver definitive Securities in aggregate principal amount
equal to the principal amount of such beneficial owner's interest in such
permanent global Security.  On or after the





                                       30
<PAGE>   40
earliest date on which such interests may be so exchanged, such permanent
global Security shall be surrendered for exchange by DTC or such other
depositary as shall be specified in the Trust Order with respect thereto to the
Trustee, as the Trust's agent for such purpose; provided, however, that no such
exchanges may occur during a period beginning at the opening of business 15
days before any selection of Securities to be redeemed and ending on the
relevant Redemption Date if the Security for which exchange is requested may be
among those selected for redemption; and provided further that no Bearer
Security delivered in exchange for a portion of a permanent global Security
shall be mailed or otherwise delivered to any location in the United States.
If a Registered Security is issued in exchange for any portion of a permanent
global Security after the close of business at the office or agency where such
exchange occurs on (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 the opening of business at such office or
agency on the related proposed date for payment of Defaulted Interest, interest
or Defaulted Interest, as the case may be, will not be payable on such Interest
Payment Date or proposed date for payment, as the case may be, in respect of
such Registered Security, but will be payable on such Interest Payment Date or
proposed date for payment, as the case may be, only to the Person to whom
interest in respect of such portion of such permanent global Security is
payable in accordance with the provisions of this Indenture.

                        All Securities issued upon any registration of transfer
or exchange of Securities shall be the valid obligations of the Trust,
evidencing the same debt, and entitled to the same benefits under this
Indenture, as the Securities surrendered upon such registration of transfer or
exchange.

                        Every Registered Security presented or surrendered for
registration of transfer or for exchange or redemption shall (if so required by
the Trust or the Security Registrar) be duly endorsed, or be accompanied by a
written instrument of transfer in form satisfactory to the Trust and the
Security Registrar, duly executed by the Holder thereof or his attorney duly
authorized in writing.

                        No service charge shall be made for any registration of
transfer or exchange of Securities, but the Trust may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any registration of transfer or exchange of Securities, other
than exchanges pursuant to Section 304, 906, 1107 or 1305 not involving any
transfer.

                        The Trust or the Trustee, as applicable, shall not be
required (i) to issue, register the transfer of or exchange any Security if
such Security may be among those selected for redemption during a period
beginning at the opening of business 15 days before selection of the Securities
to be redeemed under Section 1103 and ending at the close of business on (A) if
such Securities are issuable only as Registered Securities, the day of the
mailing of the relevant notice of redemption and (B) if such Securities are
issuable as Bearer Securities, the day of the first publication of the relevant
notice of redemption or, if such Securities are also issuable as





                                       31
<PAGE>   41
Registered Securities and there is no publication, the mailing of the relevant
notice of redemption, or (ii) to register the transfer of or exchange any
Registered Security so selected for redemption in whole or in part, except, in
the case of any Registered Security to be redeemed in part, the portion thereof
not to be redeemed, 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 that series and like tenor, provided that such Registered Security
shall be simultaneously surrendered for redemption, or (iv) to issue, register
the transfer of or exchange any Security which has been surrendered for
repayment at the option of the Holder, except the portion, if any, of such
Security not to be so repaid.

                        SECTION 306.  Mutilated, Destroyed, Lost and Stolen
Securities.  If any mutilated Security or a Security with a mutilated coupon
appertaining to it is surrendered to the Trustee or the Trust, together with,
in proper cases, such security or indemnity as may be required by the Trust or
the Trustee to save each of them or any agent of either of them harmless, the
Trust shall execute and the Trustee shall authenticate and deliver in exchange
therefor a new Security of the same series and principal amount, containing
identical terms and provisions and bearing a number not contemporaneously
outstanding, with coupons corresponding to the coupons, if any, appertaining to
the surrendered Security.

                        If there shall be delivered to the Trust and to the
Trustee (i) evidence to their satisfaction of the destruction, loss or theft of
any Security or coupon, and (ii) such security or indemnity as may be required
by them to save each of them and any agent of either of them harmless, then, in
the absence of notice to the Trust or the Trustee that such Security or coupon
has been acquired by a bona fide purchaser, the Trust shall execute and upon
its request the Trustee shall authenticate and deliver, in lieu of any such
destroyed, lost or stolen Security or in exchange for the Security to which a
destroyed, lost or stolen coupon appertains (with all appurtenant coupons not
destroyed, lost or stolen), a new Security of the same series and principal
amount, containing identical terms and provisions and bearing a number not
contemporaneously outstanding, with coupons corresponding to the coupons, if
any, appertaining to such destroyed, lost or stolen Security or to the Security
to which such destroyed, lost or stolen coupon appertains.

                        Notwithstanding the provisions of the previous two
paragraphs, in case any such mutilated, destroyed, lost or stolen Security or
coupon has become or is about to become due and payable, the Trust in its
discretion may, instead of issuing a new Security, with coupons corresponding
to the coupons, if any, appertaining to such destroyed, lost or stolen Security
or to the Security to which such destroyed, lost or stolen coupon appertains,
pay such Security or coupon; provided, however, that payment of principal of
(and premium, if any), any interest on and any Additional Amounts with respect
to, Bearer Securities shall, except as otherwise provided in Section 1002, be
payable only at an office or agency located outside the United States and,
unless otherwise specified as contemplated by Section 301, any interest on
Bearer Securities shall be payable only upon presentation and surrender of the
coupons appertaining thereto.





                                       32
<PAGE>   42
                        Upon the issuance of any new Security under this
Section, the Trust 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) connected
therewith.

                        Every new Security of any series with its coupons, if
any, issued pursuant to this Section in lieu of any destroyed, lost or stolen
Security, or in exchange for a Security to which a destroyed, lost or stolen
coupon appertains, shall constitute an original additional contractual
obligation of the Trust, whether or not the destroyed, lost or stolen Security
and its coupons, if any, or the destroyed, lost or stolen coupon shall be at
any time enforceable by anyone, and shall be entitled to all the benefits of
this Indenture equally and proportionately with any and all other 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 Securities
or coupons.

                        SECTION 307.  Payment of Interest; Interest Rights
Preserved.  Except as otherwise specified with respect to a series of
Securities in accordance with the provisions of Section 301, interest on any
Registered Security that 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 Security (or one or more Predecessor Securities) is registered at the
close of business on the Regular Record Date for such interest at the office or
agency of the Trust maintained for such purpose pursuant to Section 1002;
provided, however, that each installment of interest on any Registered Security
may at the Trust's option be paid by (i) mailing a check for such interest,
payable to or upon the written order of the Person entitled thereto pursuant to
Section 308, to the address of such Person as it appears on the Security
Register or (ii) transfer to an account maintained by the payee located inside
the United States.

                        Unless otherwise provided as contemplated by Section
301 with respect to the Securities of any series, payment of interest may be
made, in the case of a Bearer Security, by transfer to an account maintained by
the payee with a bank located outside the United States.

                        Unless otherwise provided as contemplated by Section
301, every permanent global Security will provide that interest, if any,
payable on any Interest Payment Date will be paid to DTC, Euroclear and/or
CEDEL, as the case may be, with respect to that portion of such permanent
global Security held for its account by Cede & Co. or the Common Depositary, as
the case may be, for the purpose of permitting such party to credit the
interest received by it in respect of such permanent global Security to the
accounts of the beneficial owners thereof.

                        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





                                       33
<PAGE>   43
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.

                        Except as otherwise specified with respect to a series
of Securities in accordance with the provisions of Section 301, any interest on
any Registered Security of any series that 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 thereof on the relevant Regular Record Date by virtue of having been
such Holder, and such Defaulted Interest may be paid by the Trust, at its
election in each case, as provided in clause (1) or (2) below:

                        (1)     The Trust 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 Trust 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 (which shall not be less than 20 days after
                 such notice is received by the Trustee), and at the same time
                 the Trust shall deposit with the Trustee an amount of money in
                 the currency or currencies, currency unit or units or
                 composite currency or currencies in which the Securities of
                 such series are payable (except as otherwise specified
                 pursuant to Section 301 for the Securities of such series)
                 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 on or prior to
                 the date of the proposed payment, such money 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 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 Trust of such Special Record Date
                 and, in the name and at the expense of the Trust, 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.  The Trustee may, in its discretion, in the name and at
                 the expense of the Trust, cause a similar notice to be
                 published at least once in an Authorized Newspaper in each
                 place of payment, but such publications shall not be a
                 condition precedent to the establishment of 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)





                                       34
<PAGE>   44
                 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 Trust 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 such Securities may be
                 listed, and upon such notice as may be required by such
                 exchange, if, after notice given by the Trust 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 and
Section 305, each Security delivered under this Indenture upon registration of
transfer of or in exchange for or in lieu of any other Security shall carry the
rights to interest accrued and unpaid, and to accrue, which were carried by
such other Security.

                        SECTION 308.  Persons Deemed Owners.  Prior to due
presentment of a Registered Security for registration of transfer, the Trust,
the Trustee and any agent of the Trust or the Trustee may treat the Person in
whose name such Registered Security is registered as the owner of such Security
for the purpose of receiving payment of principal of (and premium, if any), and
(subject to Sections 305 and 307) interest on, such Registered Security and for
all other purposes whatsoever, whether or not such Registered Security be
overdue, and neither the Trust, the Trustee nor any agent of the Trust or the
Trustee shall be affected by notice to the contrary.

                        Title to any Bearer Security and any coupons
appertaining thereto shall pass by delivery.  The Trust, the Trustee and any
agent of the Trust or the Trustee may treat the Holder of any Bearer Security
and the Holder of any coupon as the absolute owner of such Security or coupon
for the purpose of receiving payment thereof or on account thereof and for all
other purposes whatsoever, whether or not such Security or coupon be overdue,
and neither the Trust, the Trustee nor any agent of the Trust or the Trustee
shall be affected by notice to the contrary.

                        None of the Trust, 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 Security in global form or for maintaining, supervising or
reviewing any records relating to such beneficial ownership interests.





                                       35
<PAGE>   45
                        Notwithstanding the foregoing, with respect to any
global Security, nothing herein shall prevent the Trust, the Trustee, or any
agent of the Trust or the Trustee, from giving effect to any written
certification, proxy or other authorization furnished by any depositary, as a
Holder, with respect to such global Security or impair, as between such
depositary and owners of beneficial interests in such global Security, the
operation of customary practices governing the exercise of the rights of such
depositary (or its nominee) as Holder of such global Security.

                        SECTION 309.  Cancellation.  All Securities and coupons
surrendered for payment, redemption, repayment at the option of the Holder,
registration of transfer or exchange or for credit against any sinking fund
payment shall, if surrendered to any Person other than the Trustee, be
delivered to the Trustee, and any such Securities and coupons and Securities
and coupons surrendered directly to the Trustee for any such purpose shall be
promptly canceled by it; provided, however, where the Place of Payment is
located outside of the United States, the Paying Agent at such Place of Payment
may cancel the Securities surrendered to it for such purposes prior to
delivering the Securities to the Trustee.  The Trust may at any time deliver to
the Trustee for cancellation any Securities previously authenticated and
delivered hereunder which the Trust may have acquired in any manner whatsoever,
and may deliver to the Trustee (or to any other Person for delivery to the
Trustee) for cancellation any Securities previously authenticated hereunder
which the Trust has not issued and sold, and all Securities so delivered shall
be promptly canceled by the Trustee.  If the Trust shall so acquire any of the
Securities, however, such acquisition shall not operate as a redemption or
satisfaction of the indebtedness represented by such Securities unless and
until the same are surrendered to the Trustee for cancellation.  No Securities
shall be authenticated in lieu of or in exchange for any Securities canceled as
provided in this Section, except as expressly permitted by this Indenture.
Canceled Securities and coupons held by the Trustee shall be destroyed by the
Trustee and the Trustee shall deliver a certificate of such destruction to the
Trust, unless by a Trust Order the Trust directs their return to it.

                        SECTION 310.  Computation of Interest.  Except as
otherwise specified as contemplated by Section 301 with respect to Securities
of any series, interest on the Securities of each series shall be computed on
the basis of a 360-day year consisting of twelve 30-day months.


                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

                        SECTION 401.  Satisfaction and Discharge of Indenture.
This Indenture shall upon Trust Request cease to be of further effect with
respect to any series of Securities specified in such Trust Request (except as
to any surviving rights of registration of transfer or exchange of Securities
of such series herein expressly provided for and any right to receive
Additional Amounts, as provided in Section 1010), and the Trustee, upon receipt
of a Trust Order, and at the





                                       36
<PAGE>   46
expense of the Trust, shall execute proper instruments acknowledging
satisfaction and discharge of this Indenture as to such series when

                        (1)     either

                                (A)      all Securities of such series
                        theretofore authenticated and delivered and all
                        coupons, if any, appertaining thereto (other than (i)
                        coupons appertaining to Bearer Securities surrendered
                        for exchange for Registered Securities and maturing
                        after such exchange, whose surrender is not required or
                        has been waived as provided in Section 305, (ii)
                        Securities and coupons of such series which have been
                        destroyed, lost or stolen and which have been replaced
                        or paid as provided in Section 306, (iii) coupons
                        appertaining to Securities called for redemption and
                        maturing after the relevant Redemption Date, whose
                        surrender has been waived as provided in Section 1106,
                        and (iv) Securities and coupons of such series for
                        whose payment money has theretofore been deposited in
                        trust or segregated and held in trust by the Trust and
                        thereafter repaid to the Trust or discharged from such
                        trust, as provided in Section 1003) have been delivered
                        to the Trustee for cancellation; or

                                (B)      all Securities of such series and, in
                        the case of (i) or (ii) below, any coupons appertaining
                        thereto 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)  if redeemable at the option of the
                                Trust, are to be called for redemption within
                                one year under arrangements satisfactory to the
                                Trustee for the giving of notice of redemption
                                by the Trustee in the name, and at the expense,
                                of the Trust,

                        and the Trust, in the case of (i), (ii) or (iii) above,
                        has irrevocably deposited or caused to be deposited
                        with the Trustee as trust funds in trust for the
                        purpose an amount in the currency or currencies,
                        currency unit or units or composite currency or
                        currencies in which the Securities of such series are
                        payable, sufficient to pay and discharge the entire
                        indebtedness on such Securities and such coupons not
                        theretofore delivered to the Trustee for cancellation,
                        for principal (and premium, if any) and interest, and
                        any Additional Amounts with respect thereto, to the
                        date of such deposit (in the case of Securities which
                        have become due and payable) or to the Stated Maturity
                        or Redemption Date, as the case may be;





                                       37
<PAGE>   47
                        (2)     the Trust has paid or caused to be paid all 
                 other sums payable hereunder by the Trust; and

                        (3)     the Trust has delivered to the Trustee an
                 Officer's Certificate and an Opinion of Counsel, each stating
                 that all conditions precedent herein provided for relating to
                 the satisfaction and discharge of this Indenture as to such
                 series have been complied with.

Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Trust to the Trustee and any predecessor Trustee under
Section 606, the obligations of the Trust to any Authenticating Agent under
Section 611 and, if money shall have been deposited with and held by the
Trustee pursuant to subclause (B) of clause (1) of this Section, the
obligations of the Trustee under Section 402 and the last paragraph of Section
1003 shall survive.

                        SECTION 402.  Application of Trust Funds.   Subject to
the provisions of the last paragraph of Section 1003, all money deposited with
the Trustee pursuant to Section 401 shall be held in trust and applied by it,
in accordance with the provisions of the Securities, the coupons and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Trust acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal (and premium, if
any), and any interest and Additional Amounts for whose payment such money has
been deposited with or received by the Trustee, but such money need not be
segregated from other funds except to the extent required by law.


                                  ARTICLE FIVE

                                    REMEDIES

                        SECTION 501.  Events of Default.  "Event of Default",
wherever used herein with respect to any particular series of Securities, means
any one of the following events (whatever the reason for such Event of Default
and whether or not it shall be voluntary or involuntary or be effected by
operation of law or 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 any interest upon or
                 any Additional Amounts payable in respect of any Security of
                 that series or of any coupon appertaining thereto, when such
                 interest, Additional Amounts or coupon becomes due and
                 payable, and continuance of such default for a period of 30
                 days; or

                        (2)     default in the payment of the principal of (or
                 premium, if any, on) any Security of that series when it
                 becomes due and payable at its Maturity; or





                                       38
<PAGE>   48
                        (3)     default in the deposit of any sinking fund
                 payment, when and as due by the terms of any Security of that
                 series; or

                        (4)     default in the performance, or breach, of any
                 covenant or warranty of the Trust in this Indenture with
                 respect to any Security of that series (other than a covenant
                 or warranty a default in whose performance or whose breach is
                 elsewhere in this Section specifically dealt with), and
                 continuance of such default or breach for a period of 60 days
                 after there has been given, by registered or certified mail,
                 to the Trust by the Trustee or to the Trust and the Trustee by
                 the Holders of at least 25% in principal amount of the
                 Outstanding Securities of that 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

                        (5)     default under any bond, debenture, note or
                 other evidence of indebtedness for money borrowed by the Trust
                 (including obligations under leases required to be capitalized
                 on the balance sheet of the lessee under generally accepted
                 accounting principles, but not including any indebtedness or
                 obligations for which recourse is limited to property
                 purchased) in an aggregate principal amount in excess of
                 $5,000,000 or under any mortgage, indenture or instrument
                 under which there may be issued or by which there may be
                 secured or evidenced any indebtedness for money borrowed by
                 the Trust (including such leases but not including such
                 indebtedness or obligations for which recourse is limited to
                 property purchased) in an aggregate principal amount in excess
                 of $5,000,000 by the Trust, whether such indebtedness now
                 exists or shall hereafter be created, which default shall have
                 resulted in such indebtedness becoming or being declared due
                 and payable prior to the date on which it would otherwise have
                 become due and payable or such obligations being accelerated,
                 without such acceleration having been rescinded or annulled;
                 or

                        (6)     the Trust or any Significant Subsidiary 
                 pursuant to or within the meaning of any Bankruptcy Law:

                                (A)      commences a voluntary case,

                                (B)      consents to the entry of an order for 
                        relief against it in an involuntary case,

                                (C)      consents to the appointment of a
                        Custodian of it or for all or substantially all of its
                        property, or

                                (D)      makes a general assignment for the 
                        benefit of its creditors; or

                        (7)     a court of competent jurisdiction enters an 
                 order or decree under any Bankruptcy Law that:





                                       39
<PAGE>   49
                                (A)      is for relief against the Trust or 
                        any Significant Subsidiary in an involuntary case,

                                (B)      appoints a Custodian of the Trust or
                        any Significant Subsidiary or for all or substantially
                        all of either of its property, or

                                (C)      orders the liquidation of the Trust or
                        any Significant Subsidiary,

          and the order or decree remains unstayed and in effect for 90 days; or

                        (8)     any other Event of Default provided with 
                 respect to Securities of that series.

As used in this Section 501, the term "Bankruptcy Law" means title 11, U.S.
Code or any similar Federal or State law for the relief of debtors and the term
"Custodian" means any receiver, trustee, assignee, liquidator or other similar
official under any Bankruptcy Law.

                        SECTION 502.  Acceleration of Maturity; Rescission and
Annulment.  If an Event of Default with respect to Securities of any series at
the time Outstanding occurs and is continuing, then and in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities of that series may declare the principal (or, if any
Securities are Original Issue Discount Securities or Indexed Securities, such
portion of the principal as may be specified in the terms thereof) of all the
Securities of that series to be due and payable immediately, by a notice in
writing to the Trust (and to the Trustee if given by the Holders), and upon any
such declaration such principal or specified portion thereof shall become
immediately due and payable.

                        At any time after such a declaration of acceleration
with respect to 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 Securities of that series, by written notice to the
Trust and the Trustee, may rescind and annul such declaration and its
consequences if:

                        (1)     the Trust has paid or deposited with the
                 Trustee a sum sufficient to pay in the currency or currency
                 unit or composite currency in which the Securities of such
                 series are payable (except as otherwise specified pursuant to
                 Section 301 for the Securities of such series):

                                (A)      all overdue installments of interest
                        on and any Additional Amounts payable in respect of all
                        Outstanding Securities of that series and any related
                        coupons,

                                (B)      the principal of (and premium, if any,
                        on) any Outstanding Securities of that series which
                        have become due otherwise than by such declaration





                                       40
<PAGE>   50
                        of acceleration and interest thereon at the rate or 
                        rates borne by or provided for in such Securities,

                                (C)      to the extent that payment of such
                        interest is lawful, interest upon overdue installments
                        of interest and any Additional Amounts at the rate or
                        rates borne by or provided for in such Securities, and

                                (D)      all sums paid or advanced by the
                        Trustee hereunder and the reasonable compensation,
                        expenses, disbursements and advances of the Trustee,
                        its agents and counsel; and

                        (2)     all Events of Default with respect to
                 Securities of that series, other than the nonpayment of the
                 principal of (or premium, if any) or interest on Securities of
                 that series which have become due solely by such declaration
                 of acceleration, have been cured or waived as provided in
                 Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

                        SECTION 503.  Collection of Indebtedness and Suits for 
Enforcement by Trustee. The Trust covenants that if:

                        (1)     default is made in the payment of any
                 installment of interest or Additional Amounts, if any, on any
                 Security of any series and any related coupon when such
                 interest or Additional Amount 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 Security of any series at its
                 Maturity,

then the Trust will, upon demand of the Trustee, pay to the Trustee, for the
benefit of the Holders of such Securities of such series and coupons, the whole
amount then due and payable on such Securities and coupons for principal (and
premium, if any) and interest and Additional Amounts, with interest upon any
overdue principal (and premium, if any) and, to the extent that payment of such
interest shall be legally enforceable, upon any overdue installments of
interest or Additional Amounts, if any, at the rate or rates borne by or
provided for in such 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 Trust 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 or final decree, and may
enforce the same against the Trust or any other obligor upon such Securities of





                                       41
<PAGE>   51
such series and collect the moneys adjudged or decreed to be payable in the
manner provided by law out of the property of the Trust or any other obligor
upon such Securities of such series, wherever situated.

                        If an Event of Default with respect to 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 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 504.  Trustee May File Proofs of Claim.  In
case of the pendency of any receivership, insolvency, liquidation, bankruptcy,
reorganization, arrangement, adjustment, composition or other judicial
proceeding relative to the Trust or any other obligor upon the Securities or
the property of the Trust or of such other obligor or their creditors, the
Trustee (irrespective of whether the principal of the Securities of any series
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 Trust for the payment of overdue principal, premium, if any, or interest)
shall be entitled and empowered, by intervention in such proceeding or
otherwise:

                        (i)     to file and prove a claim for the whole amount,
                 or such lesser amount as may be provided for in the Securities
                 of such series, of principal (and premium, if any) and
                 interest and Additional Amounts, if any, owing and unpaid in
                 respect of the Securities and to file such other papers or
                 documents as may be necessary or advisable 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

                     (ii)       to collect and receive any moneys or other
                 property payable or deliverable on any such claims and to
                 distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator (or
other similar official) in any such judicial proceeding is hereby authorized by
each Holder of Securities of such series and coupons 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 to
it for the reasonable compensation, expenses, disbursements and advances of the
Trustee and any predecessor Trustee, their agents and counsel, and any other
amounts due the Trustee or any predecessor Trustee under Section 606.

                        Nothing herein contained shall be deemed to authorize
the Trustee to authorize or consent to or accept or adopt on behalf of any
Holder of a Security or coupon any plan of reorganization, arrangement,
adjustment or composition affecting the Securities or coupons or





                                       42
<PAGE>   52
the rights of any Holder thereof, or to authorize the Trustee to vote in
respect of the claim of any Holder of a Security or coupon in any such
proceeding.

                        SECTION 505.  Trustee May Enforce Claims Without
Possession of Securities or Coupons.  All rights of action and claims under
this Indenture or any of the Securities or coupons may be prosecuted and
enforced by the Trustee without the possession of any of the 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 Securities and coupons in respect of
which such judgment has been recovered.

                        SECTION 506.  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 (or premium, if any) or
interest and any Additional Amounts, upon presentation of the 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 
                 and any predecessor Trustee under Section 606;

                        SECOND:  To the payment of the amounts then due and
                 unpaid upon the Securities and coupons for principal (and
                 premium, if any) and interest and any Additional Amounts
                 payable, 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 aggregate amounts due
                 and payable on such Securities and coupons for principal (and
                 premium, if any), interest and Additional Amounts,
                 respectively; and

                         THIRD:   To the payment of the remainder, if any, to 
                 the Trust.

                        SECTION 507.  Limitation on Suits.  No Holder of any
Security of any series or any related coupon 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 Event of Default with respect
                 to the Securities of that series;

                        (2)     the Holders of not less than 25% in principal
                 amount of the Outstanding Securities of that series shall have
                 made written request to the Trustee to institute proceedings
                 in respect of such Event of Default in its own name as Trustee
                 hereunder;





                                       43
<PAGE>   53
                        (3)     such Holder or Holders have offered to the
                 Trustee indemnity reasonably satisfactory to the Trustee
                 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 Securities of that 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 of
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 such
Holders.

                        SECTION 508.  Unconditional Right of Holders to Receive
Principal, Premium, if any, Interest and Additional Amounts.  Notwithstanding
any other provision in this Indenture, the Holder of any 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 Sections 305 and 307,
interest on, and any Additional Amounts in respect of, such Security or payment
of such coupon on the respective due dates expressed in such Security or coupon
(or, in the case of redemption, on the Redemption Date) and to institute suit
for the enforcement of any such payment, and such rights shall not be impaired
without the consent of such Holder.

                        SECTION 509. Restoration of Rights and Remedies.  If
the Trustee or any Holder of a Security of coupon has instituted any proceeding
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 Trust, the
Trustee and the Holders of Securities and coupons shall, subject to and
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 510.  Rights and Remedies Cumulative.  Except
as otherwise provided with respect to the replacement or payment of mutilated,
destroyed, lost or stolen Securities or coupons in the last paragraph of
Section 306, no right or remedy herein conferred upon or reserved to the
Trustee or to the Holders of Securities or coupons 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





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<PAGE>   54
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

                        SECTION 511.  Delay or Omission Not Waiver.  No delay
or omission of the Trustee or of any Holder of any 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 of
Securities or coupons, as the case may be.

                        SECTION 512.  Control by Holders of Securities.  The
Holders of not less than a majority in principal amount of the Outstanding
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
Securities of such series, provided that

                        (1)     such direction shall not be in conflict with 
                 any rule of law or with this Indenture,

                        (2)     the Trustee may take any other action deemed
                 proper by the Trustee which is not inconsistent with such
                 direction, and

                        (3)     the Trustee need not take any action which
                 might involve it in personal liability or be unduly
                 prejudicial to the Holders of Securities of such series not
                 joining therein.

                        SECTION 513.  Waiver of Past Defaults.  The Holders of
not less than a majority in principal amount of the Outstanding Securities of
any series may on behalf of the Holders of all the Securities of 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 or Additional Amounts payable in
                 respect of any Security of such series or any related coupons,
                 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 Security of such
                 series 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





                                       45
<PAGE>   55
such waiver shall extend to any subsequent or other default or Event of Default
or impair any right consequent thereon.

                        SECTION 514.  Waiver of Usury, Stay or Extension Laws.
The Trust 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 usury, stay or extension law wherever enacted,
now or at any time hereafter in force, which may affect the covenants or the
performance of this Indenture; and the Trust (to the extent that it may
lawfully do so) hereby expressly waives all benefit 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.

                        SECTION 515.  Undertaking for Costs.  All parties to
this Indenture agree, and each Holder of any Security 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 or omitted by it as
Trustee, the filing by any party litigant in such suit of any undertaking to
pay the costs of such suit, and that such court may in its discretion assess
reason-able costs, including reasonable attorneys' fees, against any party
litigant in such suit having due regard to the merits and good faith of the
claims or defenses made by such party litigant; but the pro-visions 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 Securities, 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 Security on or after the respective
Stated Maturities expressed in such Security (or, in the case of redemption, on
or after the Redemption Date).


                                  ARTICLE SIX

                                  THE TRUSTEE

                        SECTION 601.  Notice of Defaults.  Within 90 days after
the occurrence of any default hereunder with respect to the Securities of any
series, the Trustee shall transmit in the manner and to the extent provided in
TIA Section 313(c), notice of such default hereunder known to the Trustee,
unless such default shall have been cured or waived; provided, however, that,
except in the case of a default in the payment of the principal of (or premium,
if any) or interest on or any Additional Amounts with respect to any Security
of such series, or in the payment of any sinking fund installment with respect
to the Securities of such series, the Trustee shall be protected in withholding
such notice if and so long as Responsible Officers of the Trustee in good faith
determine that the withholding of such notice is in the interests of the
Holders of the Securities and coupons of such series; and provided further that
in the case of any default or breach of the character specified in Section
501(4) with respect to the Securities and coupons of such series, no such
notice to Holders shall be given until at least 60 days after the





                                       46
<PAGE>   56
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, an
Event of Default with respect to the Securities of such series.

                        SECTION 602.  Certain Rights of Trustee.  Subject to 
the provisions of TIA Section 315(a) through 315(d):

                        (1)     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;

                        (2)     any request or direction of the Trust mentioned
                 herein shall be sufficiently evidenced by a Trust Request or
                 Trust Order (other than delivery of any Security, together
                 with any coupons appertaining thereto, to the Trustee for
                 authentication and delivery pursuant to Section 303 which
                 shall be sufficiently evidenced as provided therein) and any
                 resolution of the Board of Trustees may be sufficiently
                 evidenced by a Board Resolution;

                        (3)     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;

                        (4)     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;

                        (5)     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
                 Securities of any series or any related coupons pursuant to
                 this Indenture, unless such Holders shall have offered to the
                 Trustee security or indemnity reasonably satisfactory to the
                 Trustee against the costs, expenses and liabilities which
                 might be incurred by it in compliance with such request or
                 direction;

                        (6)     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 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 make
                 reasonable examination of the books, records and premises of
                 the Trust, personally or by agent or attorney following
                 reasonable notice to the Trust;





                                       47
<PAGE>   57
                        (7)     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; and

                        (8)     the Trustee shall not be liable for any action
                 taken, suffered or omitted by it in good faith and reasonably
                 believed by it to be authorized or within the discretion or
                 rights or powers conferred upon it by this Indenture.

                        The Trustee shall not be required 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.

                        Except during the continuance of an Event of Default,
the Trustee undertakes to perform only such duties as are specifically set
forth in this Indenture, and no implied covenants or obligations shall be read
into this Indenture against the Trustee.

                        SECTION 603.  Not Responsible for Recitals or Issuance
of Securities.  The recitals contained herein and in the Securities, except the
Trustee's certificate of authentication, and in any coupons shall be taken as
the statements of the Trust, and neither the Trustee nor any Authenticating
Agent assumes any responsibility for their correctness.  The Trustee makes no
representations as to the validity or sufficiency of this Indenture or of the
Securities or coupons, except that the Trustee represents that it is duly
authorized to execute and deliver this Indenture, authenticate the Securities
and perform its obligations hereunder.  Neither the Trustee nor any
Authenticating Agent shall be accountable for the use or application by the
Trust of Securities or the proceeds thereof.

                        SECTION 604.  May Hold Securities.  The Trustee, any
Paying Agent, Security Registrar, Authenticating Agent or any other agent of
the Trust, in its individual or any other capacity, may become the owner or
pledgee of Securities and coupons and, subject to TIA Sections 310(b) and 311,
may otherwise deal with the Trust with the same rights it would have if it were
not Trustee, Paying Agent, Security Registrar, Authenticating Agent or such
other agent.

                        SECTION 605.  Money Held in Trust.  Money held by the
Trustee in trust hereunder need not be segregated from other funds except to
the extent required by law.  The Trustee shall be under no liability for
interest on any money received by it hereunder except as otherwise agreed with
the Trust.

                        SECTION 606.  Compensation and Reimbursement.  The 
Trust agrees:





                                       48
<PAGE>   58
                        (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 each of the Trustee and any predecessor 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 each of the Trustee and any
                 predecessor Trustee for, and to hold it harmless against, any
                 loss, liability or expense incurred without negligence or bad
                 faith on its own part, arising out of or in connection with
                 the acceptance or administration of the trust or trusts
                 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.

                        When the Trustee incurs expenses or renders services in
connection with an Event of Default specified in Section 501(6) or Section
501(7), the expenses (including the reasonable charges and expenses of its
counsel) and the compensation for the services are intended to constitute
expenses of administration under any applicable Federal or state bankruptcy,
insolvency or other similar law.

                        As security for the performance of the obligations of
the Trust under this Section, the Trustee shall have a lien prior to the
Securities upon all property and funds held or collected by the Trustee as
such, except funds held in trust for the payment of principal of (or premium,
if any) or interest on particular Securities or any coupons.

                        The provisions of this Section shall survive the
termination of this Indenture.

                        SECTION 607.  Corporate Trustee Required; Eligibility;
Conflicting Interests.  There shall at all times be a Trustee hereunder which
shall be eligible to act as Trustee under TIA Section 310(a)(1) and shall have
a combined capital and surplus of at least $50,000,000.  If such corporation
publishes reports of condition at least annually, pursuant to law or the
requirements of Federal, State, Territorial or District of Columbia 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.





                                       49
<PAGE>   59
                        SECTION 608.  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 in accordance with the
applicable requirements of Section 609.

                        (b)     The Trustee may resign at any time with respect
to the Securities of one or more series by giving written notice thereof to the
Trust.  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.

                        (c)     The Trustee may be removed at any time with
respect to the Securities of any series by Act of the Holders of a majority in
principal amount of the Outstanding Securities of such series delivered to the
Trustee and to the Trust.

                        (d)     If at any time:

                        (1)     the Trustee shall fail to comply with the
                 provisions of TIA Section 310(b) after written request
                 therefor by the Trust or by any Holder of a Security who has
                 been a bona fide Holder of a Security for at least six months,
                 or

                        (2)     the Trustee shall cease to be eligible under
                 Section 607 and shall fail to resign after written request
                 therefor by the Trust or by any Holder of a Security who has
                 been a bona fide Holder of a Security for at least six months,
                 or

                        (3)     the Trustee shall become incapable of acting or
                 shall be adjudged a bankrupt or insolvent or a receiver of the
                 Trustee or of its property shall be appointed or any public
                 officer shall take charge or control of the Trustee or of its
                 property or affairs for the purpose of rehabilitation,
                 conservation or liquidation,

then, in any such case, (i) the Trust by or pursuant to a Board Resolution may
remove the Trustee and appoint a successor Trustee with respect to all
Securities, or (ii) subject to TIA Section 315(e), any Holder of a Security who
has been a bona fide Holder of a Security 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 with respect to all
Securities and the appointment of a successor Trustee or Trustees.

                        (e)     If the Trustee shall resign, be removed or
become incapable of acting, or if a vacancy shall occur in the office of
Trustee for any cause with respect to the Securities of one or more series, the
Trust, by or pursuant to a Board Resolution, shall promptly appoint a successor
Trustee or Trustees with respect to the Securities of that or those series (it
being understood that any such successor Trustee may be appointed with respect
to the 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 Securities of





                                       50
<PAGE>   60
any particular series).  If, within one year after such resignation, removal or
incapability, or the occurrence of such vacancy, a successor Trustee with
respect to the Securities of any series shall be appointed by Act of the
Holders of a majority in principal amount of the Outstanding Securities of such
series delivered to the Trust 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 Securities of such series and to that
extent supersede the successor Trustee appointed by the Trust.  If no successor
Trustee with respect to the Securities of any series shall have been so
appointed by the Trust or the Holders of Securities and accepted appointment in
the manner hereinafter provided, any Holder of a Security who has been a bona
fide Holder of a Security of such series for at least six months may, 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
Securities of such series.

                        (f)     The Trust shall give notice of each resignation
and each removal of the Trustee with respect to the Securities of any series
and each appointment of a successor Trustee with respect to the Securities of
any series in the manner provided for notices to the Holders of Securities in
Section 106.  Each notice shall include the name of the successor Trustee with
respect to the Securities of such series and the address of its Corporate Trust
Office.

                        SECTION 609.  Acceptance of Appointment by Successor.
(a)  In case of the appointment hereunder of a successor Trustee with respect
to all Securities, every such successor Trustee shall execute, acknowledge and
deliver to the Trust 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 Trust 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, subject nevertheless to its claim, if any, provided for in
Section 606.

                        (b)  In case of the appointment hereunder of a
successor Trustee with respect to the Securities of one or more (but not all)
series, the Trust, the retiring Trustee and each successor Trustee with respect
to the Securities of one or more series shall execute and deliver an indenture
supplemental hereto, pursuant to Article Nine hereof, 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 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 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
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





                                       51
<PAGE>   61
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 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 Securities of that or those series
to which the appointment of such successor Trustee relates; but, on request of
the Trust 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 Securities of that or those
series to which the appointment of such successor Trustee relates.

                        (c)  Upon request of any such successor Trustee, the
Trust 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 610.  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 execution or filing of any paper or any further
act on the part of any of the parties hereto.  In case any Securities or
coupons 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 Securities
or coupons so authenticated with the same effect as if such successor Trustee
had itself authenticated such Securities or coupons.  In case any Securities or
coupons shall not have been authenticated by such predecessor Trustee, any such
successor Trustee may authenticate and deliver such Securities or coupons, 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 611.  Appointment of Authenticating Agent.  At
any time when any of the Securities remain Outstanding, the Trustee may appoint
an Authenticating Agent or Agents with respect to one or more series of
Securities which shall be authorized to act on behalf of the Trustee to
authenticate Securities of such series issued upon exchange, registration of
transfer or partial redemption or repayment thereof, and Securities so
authenticated shall be entitled to the





                                       52
<PAGE>   62
benefits of this Indenture and shall be valid and obligatory for all purposes
as if authenticated by the Trustee hereunder.  Any such appointment shall be
evidenced by an instrument in writing signed by a Responsible Officer of the
Trustee, a copy of which instrument shall be promptly furnished to the Trust.
Wherever reference is made in this Indenture to the authentication and delivery
of Securities by the Trustee or the Trustee's certificate of authentication,
such reference shall be deemed to include authentication and delivery 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 shall be acceptable to the Trust and shall at all times be
a bank or trust company or corporation organized and doing business and in good
standing under the laws of the United States of America or of any State or the
District of Columbia, authorized under such laws to act as Authenticating
Agent, having a combined capital and surplus of not less than $50,000,000 and
subject to supervision or examination by Federal or State authorities.  If such
Authenticating Agent publishes reports of condition at least annually, pursuant
to law or the requirements of the aforesaid supervising or examining authority,
then for the purposes of this Section, the combined capital and surplus of such
Authenticating Agent shall be deemed to be its combined capital and surplus as
set forth in its most recent report of condition so published.  In case at any
time an Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, such Authenticating Agent shall resign immediately
in the manner and with the effect specified in this Section.

                        Any corporation into which an Authenticating Agent may
be merged or converted or with which it may be consolidated, or any corporation
resulting from any merger, conversion or consolidation to which such
Authenticating Agent shall be a party, or any corporation succeeding to the
corporate agency or corporate trust business of an Authenticating Agent, shall
continue to be an Authenticating Agent, provided such corporation shall be
otherwise eligible under this Section, without the execution or filing of any
paper or further act on the part of the Trustee or the Authenticating Agent.

                        An Authenticating Agent for any series of Securities
may at any time resign by giving written notice of resignation to the Trustee
for such series and to the Trust.  The Trustee for any series of Securities may
at any time terminate the agency of an Authenticating Agent by giving written
notice of termination to such Authenticating Agent and to the Trust.  Upon
receiving such a notice of resignation or upon such a termination, or in case
at any time such Authenticating Agent shall cease to be eligible in accordance
with the provisions of this Section, the Trustee for such series may appoint a
successor Authenticating Agent which shall be acceptable to the Trust and shall
give notice of such appointment to all Holders of Securities of the series with
respect to which such Authenticating Agent will serve in the manner set forth
in Section 106.  Any successor Authenticating Agent upon acceptance of its
appointment hereunder shall become vested with all the 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.





                                       53
<PAGE>   63
                        The Trust agrees to pay to each Authenticating Agent
from time to time reasonable compensation including reimbursement of its
reasonable expenses for its services under this Section.

                        If an appointment with respect to one or more series is
made pursuant to this Section, the Securities of such series may have endorsed
thereon, in addition to or in lieu of the Trustee's certificate of
authentication, an alternate certificate of authentication substantially in the
following form:

                        This is one of the Securities of the series designated
therein referred to in the within-mentioned Indenture.

                                     THE FIRST NATIONAL BANK OF CHICAGO
                                        as Trustee
                                     
                                     
                                     By:                            ,
                                        ---------------------------- 
                                        as Authenticating Agent
                                     
                                     
                                     By:                            
                                        ----------------------------
                                       Authorized Signatory



                                 ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND TRUST

                 SECTION 701.  Disclosure of Names and Addresses of Holders.
Every Holder of Securities or coupons, by receiving and holding the same,
agrees with the Trust and the Trustee that neither the Trust nor the Trustee
nor any Authenticating Agent nor any Paying Agent nor any Security Registrar
shall be held accountable by reason of the disclosure of any information as to
the names and addresses of the Holders of Securities in accordance with TIA
Section 312, regardless of the source from which such information was derived,
and that the Trustee shall not be held accountable by reason of mailing any
material pursuant to a request made under TIA Section 312(b).

                 SECTION 702.  Reports by Trustee.  Within 60 days after June 1
of each year commencing with the first June 1 after the first issuance of
Securities pursuant to this Indenture, the Trustee shall transmit by mail to
all Holders of Securities as provided in TIA Section 313(c) a brief report
dated as of such June 1 if required by TIA Section 313(a).





                                       54
<PAGE>   64
                 SECTION 703.  Reports by Trust.  The Trust will:

                 (1)      file with the Trustee, within 15 days after the Trust
         is required to file the same with the Commission, copies of the annual
         reports and of the information, documents and other reports (or copies
         of such portions of any of the foregoing as the Commission may from
         time to time by rules and regulations prescribe) which the Trust may
         be required to file with the Commission pursuant to Section 13 or
         Section 15(d) of the Securities Exchange Act of 1934; or, if the Trust
         is not required to file information, documents or reports pursuant to
         either of such Sections, then it will file with the Trustee, in
         accordance with rules and regulations prescribed from time to time by
         the Commission, such of the supplementary and periodic information,
         documents and reports which may be required pursuant to Section 13 of
         the Securities Exchange Act of 1934 in respect of a security listed
         and registered on a national securities exchange as may be prescribed
         from time to time in such rules and regulations;

                 (2)      file with the Trustee and the Commission, in
         accordance with rules and regulations prescribed from time to time by
         the Commission, such additional information, documents and reports
         with respect to compliance by the Trust with the conditions and
         covenants of this Indenture as may be required from time to time by
         such rules and regulations; and

                 (3)      transmit by mail to the Holders of Securities, within
         30 days after the filing thereof with the Trustee, in the manner and
         to the extent provided in TIA Section 313(c), such summaries of any
         information, documents and reports required to be filed by the Trust
         pursuant to paragraphs (1) and (2) of this Section as may be required
         by rules and regulations prescribed from time to time by the
         Commission.

                 SECTION 704.  Trust to Furnish Trustee Names and Addresses of
Holders.  The Trust will furnish or cause to be furnished to the Trustee:

                 (a)  semi-annually, not later than 15 days after the Regular
Record Date for interest for each series of Securities, a list, in such form as
the Trustee may reasonably require, of the names and addresses of the Holders
of Registered Securities of such series as of such Regular Record Date, or if
there is no Regular Record Date for interest for such series of Securities,
semi-annually, upon such dates as are set forth in the Board Resolution or
indenture supplemental hereto authorizing such series, and

                 (b)  at such other times as the Trustee may request in
writing, within 30 days after the receipt by the Trust 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, so long as the Trustee is the Security Registrar, no
such list shall be required to be furnished.





                                       55
<PAGE>   65

                                 ARTICLE EIGHT

                CONSOLIDATION, MERGER, SALE, LEASE OR CONVEYANCE

                 SECTION 801.  Consolidations and Mergers of Trust and Sales,
Leases and Conveyances Permitted Subject to Certain Conditions.  The Trust may
consolidate with, or sell, lease or convey all or substantially all of its
assets to, or merge with or into any other corporation, provided that in any
such case, (1) either the Trust shall be the continuing corporation, or the
successor corporation shall be a corporation organized and existing under the
laws of the United States or a State thereof and such successor corporation
shall expressly assume the due and punctual payment of the principal of (and
premium, if any) and any interest (including all Additional Amounts, if any,
payable pursuant to Section 1010) on all of the Securities, according to their
tenor, and the due and punctual performance and observance of all of the
covenants and conditions of this Indenture to be performed by the Trust by
supplemental indenture, complying with Article Nine hereof, satisfactory to the
Trustee, executed and delivered to the Trustee by such corporation and (2)
immediately after giving effect to such transaction and treating any
indebtedness which becomes an obligation of the Trust or any Subsidiary as a
result thereof as having been incurred by the Trust or such Subsidiary at the
time of such transaction, no Event of Default, and no event which, after notice
or the lapse of time, or both, would become an Event of Default, shall have
occurred and be continuing.

                 SECTION 802.  Rights and Duties of Successor Corporation.  In
case of any such consolidation, merger, sale, lease or conveyance and upon any
such assumption by the successor corporation, such successor corporation shall
succeed to and be substituted for the Trust, with the same effect as if it had
been named herein as the party of the first part, and the predecessor
corporation, except in the event of a lease, shall be relieved of any further
obligation under this Indenture and the Securities.  Such successor corporation
thereupon may cause to be signed, and may issue either in its own name or in
the name of the Trust, any or all of the Securities issuable hereunder which
theretofore shall not have been signed by the Trust and delivered to the
Trustee; and, upon the order of such successor corporation, instead of the
Trust, and subject to all the terms, conditions and limitations in this
Indenture prescribed, the Trustee shall authenticate and shall deliver any
Securities which previously shall have been signed and delivered by the
officers of the Trust to the Trustee for authentication, and any Securities
which such successor corporation thereafter shall cause to be signed and
delivered to the Trustee for that purpose.  All the Securities so issued shall
in all respects have the same legal rank and benefit under this Indenture as
the Securities theretofore or thereafter issued in accordance with the terms of
this Indenture as though all of such Securities had been issued at the date of
the execution hereof.

                 In case of any such consolidation, merger, sale, lease or
conveyance, such changes in phraseology and form (but not in substance) may be
made in the Securities thereafter to be issued as may be appropriate.





                                       56
<PAGE>   66
                 SECTION 803.  Officer's Certificate and Opinion of Counsel.
Any consolidation, merger, sale, lease or conveyance permitted under Section
801 is also subject to the condition that the Trustee receive an Officer's
Certificate and an Opinion of Counsel to the effect that any such
consolidation, merger, sale, lease or conveyance, and the assumption by any
successor corporation, complies with the provisions of this Article and that
all conditions precedent herein provided for relating to such transaction have
been complied with.


                                  ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

                 SECTION 901.  Supplemental Indentures without Consent of
Holders.  Without the consent of any Holders of Securities or coupons, the
Trust, when authorized by or pursuant to 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 Person to the
         Trust and the assumption by any such successor of the covenants of the
         Trust herein and in the Securities contained; or

                 (2)      to add to the covenants of the Trust for the benefit
         of the Holders of all or any series of Securities (and if such
         covenants are to be for the benefit of less than all series of
         Securities, stating that such covenants are expressly being included
         solely for the benefit of such series) or to surrender any right or
         power herein conferred upon the Trust; or

                 (3)      to add any additional Events of Default for the
         benefit of the Holders of all or any series of Securities (and if such
         Events of Default are to be for the benefit of less than all series of
         Securities, stating that such Events of Default are expressly being
         included solely for the benefit of such series); provided, however,
         that in respect of any such additional Events of Default such
         supplemental indenture may provide for a particular period of grace
         after default (which period may be shorter or longer than that allowed
         in the case of other defaults) or may provide for an immediate
         enforcement upon such default or may limit the remedies available to
         the Trustee upon such default or may limit the right of the Holders of
         a majority in aggregate principal amount of that or those series of
         Securities to which such additional Events of Default apply to waive
         such default; or

                 (4)      to add to or change 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 of or any premium or interest on Bearer





                                       57
<PAGE>   67
         Securities, to permit Bearer Securities to be issued in exchange for
         Registered Securities, to permit Bearer Securities to be issued in
         exchange for Bearer Securities of other authorized denominations or to
         permit or facilitate the issuance of Securities in uncertificated
         form, provided that any such action shall not adversely affect the
         interests of the Holders of Securities of any series or any related
         coupons in any material respect; or

                 (5)      to change or eliminate any of the provisions of this
         Indenture, provided that any such change or elimination shall become
         effective only when there is no Security Outstanding of any series
         created prior to the execution of such supplemental indenture which is
         entitled to the benefit of such provision; or

                 (6)      to secure the Securities; or

                 (7)      to establish the form or terms of Securities of any
         series and any related coupons as permitted by Sections 201 and 301,
         including the provisions and procedures relating to Securities
         convertible into Common Shares or Preferred Shares, as the case may
         be; or

                 (8)      to evidence and provide for the acceptance of
         appointment hereunder by a successor Trustee with respect to the
         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; 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 the provisions of this Indenture, provided such
         provisions shall not adversely affect the interests of the Holders of
         Securities of any series or any related coupons in any material
         respect; or

             (10)  to supplement any of the provisions of this Indenture to
         such extent as shall be necessary to permit or facilitate the
         defeasance and discharge of any series of Securities pursuant to
         Sections 401, 1402 and 1403; provided that any such action shall not
         adversely affect the interests of the Holders of Securities of such
         series and any related coupons or any other series of Securities in
         any material respect.

                 SECTION 902.  Supplemental Indentures with Consent of Holders.
With the consent of the Holders of not less than a majority in principal amount
of all Outstanding Securities affected by such supplemental indenture, by Act
of said Holders delivered to the Trust and the Trustee, the Trust, when
authorized by or pursuant to 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 of
Securities and any related





                                       58
<PAGE>   68
coupons under this Indenture; provided, however, that no such supplemental
indenture shall, without the consent of the Holder of each Outstanding Security
affected thereby:

                 (1)      change the Stated Maturity of the principal of (or
         premium, if any, on) or any installment of principal of or interest
         on, any Security; or reduce the principal amount thereof or the rate
         or amount of interest thereon or any Additional Amounts payable in
         respect thereof, or any premium payable upon the redemption thereof,
         or change any obligation of the Trust to pay Additional Amounts
         pursuant to Section 1010 (except as contemplated by Section 801(1) and
         permitted by Section 901(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 502 or the amount thereof provable in bankruptcy pursuant to
         Section 504, or adversely affect any right of repayment at the option
         of the Holder of any Security, or change any Place of Payment where,
         or the currency or currencies, currency unit or units or composite
         currency or currencies in which, any Security or any premium or the
         interest thereon 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 at the option of
         the Holder, on or after the Redemption Date or the Repayment Date, as
         the case may be), or

                 (2)      reduce the percentage in principal amount of the
         Outstanding 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 with respect to such series (or
         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 1504 for quorum or
         voting, or

                 (3)      modify any of the provisions of this Section, Section
         513 or Section 1013, except to increase the required percentage to
         effect such action or to provide that certain other provisions of this
         Indenture cannot be modified or waived without the consent of the
         Holder of each Outstanding Security affected thereby.

                 It shall not be necessary for any Act of Holders 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.

                 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 Securities, or which
modifies the rights of the Holders of 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 Securities of any other series.





                                       59
<PAGE>   69
                 SECTION 903.  Execution of Supplemental Indentures.  In
executing, or accepting the additional trusts created by, any supplemental
indenture permitted by this Article or the  modification thereby of the trusts
created by this Indenture, the Trustee shall be entitled to receive, and 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 904.  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
Securities theretofore or thereafter authenticated and delivered hereunder and
of any coupon appertaining thereto shall be bound thereby.

                 SECTION 905.  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 906.  Reference in Securities to Supplemental
Indentures.  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
Trust shall so determine, new Securities of any series so modified as to
conform, in the opinion of the Trustee and the Trust, to any such supplemental
indenture may be prepared and executed by the Trust and authenticated and
delivered by the Trustee in exchange for Outstanding Securities of such series.


                                  ARTICLE TEN

                                   COVENANTS

                 SECTION 1001.  Payment of Principal, Premium, if any, Interest
and Additional Amounts.  The Trust covenants and agrees for the benefit of the
Holders of each series of Securities that it will duly and punctually pay the
principal of (and premium, if any) and interest on and any Additional Amounts
payable in respect of the Securities of that series in accordance with the
terms of such series of Securities, any coupons appertaining thereto and this
Indenture.  Unless otherwise specified as contemplated by Section 301 with
respect to any series of Securities, any interest due on and any Additional
Amounts payable in respect of Bearer Securities on or before Maturity, other
than Additional Amounts, if any, payable as provided in Section 1010 in respect
of principal of (or premium, if any, on) such a 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.  Unless
otherwise specified with respect to Securities





                                       60
<PAGE>   70
of any series pursuant to Section 301, at the option of the Trust, all payments
of principal may be paid by check to the registered Holder of the Registered
Security or other person entitled thereto against surrender of such Security.

                 SECTION 1002.  Maintenance of Office or Agency.  If Securities
of a series are issuable only as Registered Securities, the Trust shall
maintain in each Place of Payment for any series of Securities an office or
agency where Securities of that series may be presented or surrendered for
payment or conversion, where Securities of that series may be surrendered for
registration of transfer or exchange and where notices and demands to or upon
the Trust in respect of the Securities of that series and this Indenture may be
served.  If Securities of a series are issuable as Bearer Securities, the Trust
will maintain:  (A) in the Borough of Manhattan, New York City, an office or
agency where any Registered Securities of that series may be presented or
surrendered for payment or conversion, where any Registered Securities of that
series may be surrendered for registration of transfer, where Securities of
that series may be surrendered for exchange, where notices and demands to or
upon the Trust in respect of the Securities of that series and this Indenture
may be served and where Bearer Securities of that series and related coupons
may be presented or surrendered for payment or conversion in the circumstances
described in the following paragraph (and not otherwise); (B) subject to any
laws or regulations applicable thereto, in a Place of Payment for that series
which is located outside the United States, an office or agency where
Securities of that series and related coupons may be presented and surrendered
for payment (including payment of any Additional Amounts payable on Securities
of that series pursuant to Section 1010) or conversion; provided, however, that
if the Securities of that series are listed on the Luxembourg Stock Exchange or
any other stock exchange located outside the United States and such stock
exchange shall so require, the Trust will maintain a Paying Agent for the
Securities of that series in Luxembourg or any other required city located
outside the United States, as the case may be, so long as the Securities of
that series are listed on such exchange; and (C) subject to any laws or
regulations applicable thereto, in a Place of Payment for that series located
outside the United States an office or agency where any Registered Securities
of that series may be surrendered for registration of transfer, where
Securities of that series may be surrendered for exchange and where notices and
demands to or upon the Trust in respect of the Securities of that series and
this Indenture may be served.  The Trust will give prompt written notice to the
Trustee of the location, and any change in the location, of each such office or
agency.  If at any time the Trust 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 and demands may be made or served at
the Corporate Trust Office of the Trustee, 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 1010) or conversion at the
offices specified in the Security, in London, England, and the Trust hereby
appoints the same as its agent to receive such respective presentations,
surrenders, notices and demands, and the Trust hereby appoints the Trustee its
agent to receive all such presentations, surrenders, notices and demands.





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<PAGE>   71
                 Unless otherwise specified with respect to any Securities
pursuant to Section 301, no payment of principal, premium or interest on or
Additional Amounts in respect of Bearer Securities shall be made at any office
or agency of the Trust 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, that, if the Securities of a
series are payable in Dollars, payment of principal of and any premium and
interest on any Bearer Security (including any Additional Amounts payable on
Securities of such series pursuant to Section 1010) shall be made at the office
of the designated agent of the Trust's Paying Agent in the Borough of
Manhattan, New York City, if (but only if) payment in Dollars of the full
amount of such principal, premium, interest or Additional Amounts, as the case
may be, at all offices or agencies outside the United States maintained for the
purpose by the Trust in accordance with this Indenture, is illegal or
effectively precluded by exchange controls or other similar restrictions.

                 The Trust may from time to time designate one or more other
offices or agencies where the Securities of one or more series may be presented
or surrendered for any or all of 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 Trust of its obligation to maintain
an office or agency in accordance with the requirements set forth above for
Securities of any series for such purposes.  The Trust will give prompt written
notice to the Trustee of any such designation or rescission and of any change
in the location of any such other office or agency.  Unless otherwise specified
with respect to any Securities pursuant to Section 301 with respect to a series
of Securities, the Trust hereby designates as a Place of Payment for each
series of Securities the office or agency of the Trust in the Borough of
Manhattan, New York City, and initially appoints the Trustee at its Corporate
Trust Office as Paying Agent and as its agent to receive all such
presentations, surrenders, notices and demands.

                 Unless otherwise specified with respect to any Securities
pursuant to Section 301, if and so long as the Securities of any series (i) are
denominated in a Foreign Currency or (ii) may be payable in a Foreign Currency,
or so long as it is required under any other provision of the Indenture, then
the Trust will maintain with respect to each such series of Securities, or as
so required, at least one exchange rate agent.

                 SECTION 1003.  Money for Securities Payments to Be Held in
Trust.  If the Trust shall at any time act as its own Paying Agent with respect
to any series of any Securities and any related coupons, it will, on or before
each due date of the principal of (and premium, if any), or interest on or
Additional Amounts in respect of, any of the Securities of that series,
segregate and hold in trust for the benefit of the Persons entitled thereto a
sum in the currency or currencies, currency unit or units or composite currency
or currencies in which the Securities of such series are payable (except as
otherwise specified pursuant to Section 301 for the Securities of such series)
sufficient to pay the principal (and premium, if any) or interest or Additional
Amounts 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.





                                       62
<PAGE>   72
                 Whenever the Trust shall have one or more Paying Agents for
any series of Securities and any related coupons, it will, before each due date
of the principal of (and premium, if any), or interest on or Additional Amounts
in respect of, any Securities of that series, deposit with a Paying Agent a sum
(in the currency or currencies, currency unit or units or composite currency or
currencies described in the preceding paragraph) sufficient to pay the
principal (and premium, if any) or interest or Additional Amounts, so becoming
due, such sum to be held in trust for the benefit of the Persons entitled to
such principal, premium or interest or Additional Amounts and (unless such
Paying Agent is the Trustee) the Trust will promptly notify the Trustee of its
action or failure so to act.

                 The Trust will cause each Paying Agent 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 principal of
         (and premium, if any) or interest on Securities or Additional Amounts
         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 Trust (or
         any other obligor upon the Securities) in the making of any such
         payment of principal (and premium, if any) or interest or Additional
         Amounts; 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 Trust may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Trust Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Trust 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 Trust 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 sums.

                 Except as otherwise provided in the Securities of any series,
any money deposited with the Trustee or any Paying Agent, or then held by the
Trust, in trust for the payment of the principal of (and premium, if any) or
interest on, or any Additional Amounts in respect of, any Security of any
series and remaining unclaimed for two years after such principal (and premium,
if any), interest or Additional Amounts has become due and payable shall be
paid to the Trust upon Trust Request or (if then held by the Trust) shall be
discharged from such trust; and the Holder of such Security shall thereafter,
as an unsecured general creditor, look only to the Trust for payment of such
principal of (and premium, if any) or interest on, or any Additional Amounts in
respect of, any Security, without interest thereon, and all liability of the
Trustee or such Paying





                                       63
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Agent with respect to such trust money, and all liability of the Trust 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 Trust cause to be published once, in an Authorized Newspaper,
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, any unclaimed balance of such money then remaining will be repaid
to the Trust.

                 SECTION 1004.  Existence.  Subject to Article Eight, the Trust
will do or cause to be done all things necessary to preserve and keep in full
force and effect its existence as a corporation, rights (charter and statutory)
and franchises; provided, however, that the Trust shall not be required to
preserve any 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 Trust.

                 SECTION 1005.  Maintenance of Properties.  The Trust will
cause all of its material properties used or useful in the conduct of its
business or the business of any Subsidiary to be maintained and kept in good
condition, repair and working order and supplied with all necessary equipment
and will cause to be made all necessary repairs, renewals, replacements,
betterments and improvements thereof, all as in the judgment of the Trust may
be necessary so that the business carried on in connection therewith may be
properly and advantageously conducted at all times.

                 SECTION 1006.  Insurance.  The Trust will, and will cause each
of its Subsidiaries to, keep all of its insurable properties insured against
loss or damage at least equal to their then full insurable value with insurers
of recognized responsibility.

                 SECTION 1007.  Payment of Taxes and Other Claims.  The Trust
will pay or discharge or cause to be paid or discharged, before the same shall
become delinquent, (1) all taxes, assessments and governmental charges levied
or imposed upon it or any Subsidiary or upon the income, profits or property of
the Trust or any Subsidiary, and (2) all lawful claims for labor, materials and
supplies, which, if unpaid, might by law become a material lien upon the
property of the Trust or any Subsidiary; provided, however, that the Trust
shall not be required to pay or discharge or cause to be paid or discharged any
such tax, assessment, charge or claim whose amount, applicability or validity
is being contested in good faith.

                 SECTION 1008.  Provision of Financial Information.  Whether or
not the Trust is subject to Section 13 or 15(d) of the Exchange Act, the Trust
will prepare the annual reports, quarterly reports and other documents within
15 days of each of the respective dates by which the Trust would have been
required to file with the Commission pursuant to such Section 13 or 15(d) and
will (i) transmit by mail to all Holders, as their names and addresses appear
in the Security Register, without cost to such Holders copies of the annual
reports, quarterly reports and other documents which the Trust would have been
required to file with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act if the Trust were subject to such Sections, (ii) file





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<PAGE>   74
with the Trustee copies of the annual reports, quarterly reports and other
documents which the Trust would have been required to file with the Commission
pursuant to Section 13 or 15(d) of the Exchange Act if the Trust were subject
to such Sections and (iii) promptly upon written request and payment of the
reasonable cost of duplication and delivery, supply copies of such documents to
any prospective Holder.

                 SECTION 1009.  Statement as to Compliance.  The Trust will
deliver to the Trustee, within 120 days after the end of each fiscal year, a
brief certificate from the principal executive officer, principal financial
officer or principal accounting officer as to his or her knowledge of the
Trust's compliance with all conditions and covenants under this Indenture and,
in the event of any noncompliance, specifying such noncompliance and the nature
and status thereof.  For purposes of this Section 1009, such compliance shall
be determined without regard to any period of grace or requirement of notice
under this Indenture.

                 SECTION 1010.  Additional Amounts.  If any Securities of a
series provide for the payment of Additional Amounts, the Trust will pay to the
Holder of any Security of such series or any coupon appertaining thereto
Additional Amounts as may be specified as contemplated by Section 301.
Whenever in this Indenture there is mentioned, in any context except in the
case of Section 502(1), the payment of the principal of or any premium or
interest on, or in respect of, any Security of any series or payment of any
related coupon or the net proceeds received on the sale or exchange of any
Security of any series, such mention shall be deemed to include mention of the
payment of Additional Amounts provided by the terms of such series established
pursuant to Section 301 to the extent that, in such context, Additional Amounts
are, were or would be payable in respect thereof pursuant to such terms 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.

                 Except as otherwise specified as contemplated by Section 301,
if the 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 Securities (or if the Securities of that series will not bear
interest prior to Maturity, the first day on which a payment of principal and
any premium is made), and at least 10 days prior to each date of payment of
principal and any premium or interest if there has been any change with respect
to the matters set forth in the below-mentioned Officers' Certificate, the
Trust will furnish the Trustee and the Trust'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 any premium or interest on the Securities of that series shall
be made to Holders of Securities of that series or any related coupons who are
not United States persons without withholding for or on account of any tax,
assessment or other governmental charge described in the Securities of the
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 Securities of that series or
related coupons and the Trust will pay to the Trustee or such Paying Agent the
Addi-





                                       65
<PAGE>   75
tional Amounts required by the terms of such Securities.  In the event that the
Trustee or any Paying Agent, as the case may be, shall not so receive the
above-mentioned certificate, then the Trustee or such Paying Agent shall be
entitled (i) to assume that no such withholding or deduction is required with
respect to any payment of principal or interest with respect to any Securities
of a series or related coupons until it shall have received a certificate
advising otherwise and (ii) to make all payments of principal and interest with
respect to the Securities of a series or related coupons without withholding or
deductions until otherwise advised.  The Trust 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 or in reliance on any Officers' Certificate furnished pursuant to this
Section or in reliance on the Trust's not furnishing such an Officers'
Certificate.

                 SECTION 1011.    Limitations on Incurrence of Debt.
                 (a)  The Trust will not, and will not permit any Subsidiary
to, incur any Debt if, immediately after giving effect to the incurrence of
such additional Debt and the application of the proceeds thereof, the aggregate
principal amount of all outstanding Debt of the Trust and its Subsidiaries on a
consolidated basis determined in accordance with GAAP is greater than 60% of
the sum of (without duplication) (i) the Trust's Total Assets as of the end of
the calendar quarter covered in the Trust's Annual Report on Form 10-K or
Quarterly Report on Form 10-Q, as the case may be, most recently filed with the
Commission (or, if such filing is not permitted under the Exchange Act, with
the Trustee) prior to the incurrence of such additional Debt and (ii) any
increase in the Total Assets since the end of such quarter including, without
limitation, any increase in Total Assets resulting from the incurrence of such
additional Debt (such increase together with the Total Assets being referred to
as the "Adjusted Total Assets");

                 (b)      In addition to the limitations set forth in
subsection (a) of this Section 1011, the Trust will not, and will not permit
any Subsidiary to, incur any Debt if the ratio of Consolidated Income Available
for Debt Service to the Annual Service Charge for the four consecutive fiscal
quarters most recently ended prior the date on which such additional Debt is to
be incurred shall have been less than 1.5 to 1.0, on a pro forma basis after
giving effect thereto and to the application of the proceeds therefrom, and
calculated on the assumption that (i) such Debt and any other Debt incurred by
the Trust and its Subsidiaries since the first day of such four-quarter period
and the application of the proceeds therefrom, including to refinance other
Debt, had occurred at the beginning of such period; (ii) the repayment or
retirement of any other Debt by the Trust and its Subsidiaries since the first
day of such four-quarter period had been incurred, repaid or retired at the
beginning of such period (except that, in making such computation, the amount
of Debt under any revolving credit facility shall be computed based upon the
average daily balance of such Debt during such period); (iii) in the case of
Acquired Debt or Debt incurred in connection with any acquisition since the
first day of such four-quarter period, the related acquisition has occurred as
of the first day of such period with the appropriate adjustments with respect
to such acquisition being included in such pro forma calculation; and (iv) in
the case of any acquisition or disposition by the Trust or its Subsidiaries of
any asset or                        





                                       66
<PAGE>   76
group of assets since the first day of such four-quarter period, whether by
merger, stock purchase or sale, or asset purchase or sale, such acquisition or
disposition or any related repayment of Debt had occurred as of the first day
of such period with the appropriate adjustments with respect to such
acquisition or disposition being included in such pro forma calculation.

                 (c)      In addition to the limitation set forth in
subsections (a) and (b) of this Section 1011, the Trust will not, and will not
permit any Subsidiary to, incur any Debt secured by any mortgage, lien, charge,
pledge, encumbrance or security interest of any kind upon any of the property
of the Trust or any Subsidiary (the "Secured Debt"), whether owned at the date
hereof or hereafter acquired, if, immediately after giving effect to the
incurrence of such additional Secured Debt and the application of the proceeds
thereof, the aggregate principal amount of all outstanding Secured Debt of the
Trust and its Subsidiaries on a consolidated basis is greater than 40% of the
Trust's Adjusted Total Assets.
                          
                 (d)      For purposes of this Section 1011 Debt shall be
deemed to be "incurred" by the Trust or a Subsidiary whenever the Trust or such
Subsidiary shall create, assume, guarantee or otherwise become liable in
respect thereof.

                 SECTION 1012.  Maintenance of Total Unencumbered Assets.  The
Trust will maintain Total Unencumbered Assets of not less than 150% of the
aggregate outstanding principal amount of the Unsecured Debt of the Trust.

                 SECTION 1013.  Waiver of Certain Covenants.  The Trust may
omit in any particular instance to comply with any term, provision or condition
set forth in Sections 1004 to 1008, inclusive, or Section 1011 or Section 1012
if before or after the time for such compliance the Holders of at least a
majority in principal amount of all outstanding Securities of such series, 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 Trust and the duties of the Trustee in respect of any such
term, provision or condition shall remain in full force and effect.


                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES

                 SECTION 1101.  Applicability of Article.  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 301 for Securities of any series) in accordance with this Article.





                                       67
<PAGE>   77
                 SECTION 1102.  Election to Redeem; Notice to Trustee.  The
election of the Trust to redeem any Securities shall be evidenced by or
pursuant to a Board Resolution.  In case of any redemption at the election of
the Trust of less than all of the Securities of any series, the Trust shall, at
least 45 days prior to the giving of the notice of redemption in Section 1104
(unless a shorter notice shall be satisfactory to the Trustee), notify the
Trustee of such Redemption Date and of the principal amount of Securities of
such series to be redeemed.  In the case of any redemption of Securities prior
to the expiration of any restriction on such redemption provided in the terms
of such Securities or elsewhere in this Indenture, the Trust shall furnish the
Trustee with an Officers' Certificate evidencing compliance with such
restriction.

                 SECTION 1103.  Selection by Trustee of Securities to Be
Redeemed.  If less than all the Securities of any series issued on the same day
with the same terms are to be redeemed, the particular Securities to be
redeemed shall be selected not more than 60 days prior to the Redemption Date
by the Trustee, from the Outstanding Securities of such series issued on such
date with the same 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 Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that series.

                 The Trustee shall promptly notify the Trust and the Security
Registrar (if other than itself) in writing of the Securities selected for
redemption and, in the case of any 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 Securities
shall relate, in the case of any Security redeemed or to be redeemed only in
part, to the portion of the principal amount of such Security which has been or
is to be redeemed.

                 SECTION 1104.  Notice of Redemption.  Notice of redemption
shall be given in the manner provided in Section 106, not less than 30 days nor
more than 60 days prior to the Redemption Date, unless a shorter period is
specified by the terms of such series established pursuant to Section 301, to
each Holder of Securities to be redeemed, but failure to give such notice in
the manner herein provided to the Holder of any Security designated for
redemption as a whole or in part, or any defect in the notice to any such
Holder, shall not affect the validity of the proceedings for the redemption of
any other such Security or portion thereof.

                 Any notice that is mailed to the Holders of Registered
Securities in the manner herein provided shall be conclusively presumed to have
been duly given, whether or not the Holder receives the notice.





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<PAGE>   78
                 All notices of redemption shall state:

                 (1)      the Redemption Date,

                 (2)      the Redemption Price, accrued interest to the
         Redemption Date payable as provided in Section 1106, if any, and
         Additional Amounts, if any,

                 (3)      if less than all Outstanding Securities of any series
         are to be redeemed, the identification (and, in the case of partial
         redemption, the principal amount) of the particular Security or
         Securities to be redeemed,

                 (4)      in case any Security is to be redeemed in part only,
         the notice which relates to such Security shall state that on and
         after the Redemption Date, upon surrender of such Security, the holder
         will receive, without a charge, a new Security or Securities of
         authorized denominations for the principal amount thereof remaining
         unredeemed,

                 (5)      that on the Redemption Date the Redemption Price and
         accrued interest to the Redemption Date payable as provided in Section
         1106, if any, will become due and payable upon each such Security, or
         the portion thereof, to be redeemed and, if applicable, that interest
         thereon shall cease to accrue on and after said date,

                 (6)      the Place or Places of Payment where such Securities,
         together in the case of Bearer Securities with all coupons
         appertaining thereto, if any, maturing after the Redemption Date, are
         to be surrendered for payment of the Redemption Price and accrued
         interest, if any, or for conversion,

                 (7)      that the redemption is for a sinking fund, if such is
         the case,

                 (8)  that, unless otherwise specified in such notice, Bearer
         Securities of any series, if any, surrendered for redemption must be
         accompanied by all coupons maturing subsequent to the date fixed for
         redemption or the amount of any such missing coupon or coupons will be
         deducted from the Redemption Price, unless security or indemnity
         satisfactory to the Trust, the Trustee for such series and any Paying
         Agent is furnished,

                 (9)  if Bearer Securities of any series are to be redeemed and
         any Registered Securities of such series are not to be redeemed, and
         if such Bearer Securities may be exchanged for Registered Securities
         not subject to redemption on this Redemption Date pursuant to Section
         305 or otherwise, the last date, as determined by the Trust, on which
         such exchanges may be made,

                (10) the CUSIP number of such Security, if any, and





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<PAGE>   79
                (11) if applicable, that a Holder of Securities who desires to
         convert Securities for redemption must satisfy the requirements for
         conversion contained in such Securities, the then existing conversion
         price or rate, and the date and time when the option to convert shall
         expire.

                 Notice of redemption of Securities to be redeemed shall be
given by the Trust or, at the Trust's request, by the Trustee in the name and
at the expense of the Trust.

                 SECTION 1105.  Deposit of Redemption Price.  At least one
Business Day prior to any Redemption Date, the Trust shall deposit with the
Trustee or with a Paying Agent (or, if the Trust is acting as its own Paying
Agent, which it may not do in the case of a sinking fund payment under Article
Twelve, segregate and hold in trust as provided in Section 1003) an amount of
money in the currency or currencies, currency unit or units or composite
currency or currencies in which the Securities of such series are payable
(except as otherwise specified pursuant to Section 301 for the Securities of
such series) sufficient to pay on the Redemption Date the Redemption Price of,
and (except if the Redemption Date shall be an Interest Payment Date) accrued
interest on, all the Securities or portions thereof which are to be redeemed on
that date.

                 SECTION 1106.  Securities Payable on Redemption Date.  Notice
of redemption having been given as aforesaid, the Securities so to be redeemed
shall, on the Redemption Date, become due and payable at the Redemption Price
therein specified in the currency or currencies, currency unit or units or
composite currency or currencies in which the Securities of such series are
payable (except as otherwise specified pursuant to Section 301 for the
Securities of such series) (together with accrued interest, if any, to the
Redemption Date), and from and after such date (unless the Trust shall default
in the payment of the Redemption Price and accrued interest) such Securities
shall, if the same were interest-bearing, 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 Security for redemption in accordance with said notice, together
with all coupons, if any, appertaining thereto maturing after the Redemption
Date, such Security shall be paid by the Trust at the Redemption Price,
together with accrued interest, if any, 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 at an
office or agency located outside the United States (except as otherwise
provided in Section 1002) and, unless otherwise specified as contemplated by
Section 301, only upon presentation and surrender of coupons for such interest;
and provided further that, except as otherwise provided with respect to
Securities convertible into Common Stock or Preferred Stock, 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 Securities, or one or
more Predecessor Securities, registered as such at the close of business on the
relevant Record Dates according to their terms and the provisions of Section
307.





                                       70
<PAGE>   80
                 If any Bearer Security surrendered for redemption shall not be
accompanied by all appurtenant coupons maturing after the Redemption Date, such
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 Trust 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 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;
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 1002) and, unless otherwise specified as contemplated by
Section 301, only upon presentation and surrender of those coupons.

                 If any 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 borne by
the Security.

                 SECTION 1107.  Securities Redeemed in Part.  Any Registered
Security which is to be redeemed only in part (pursuant to the provisions of
this Article or of Article Twelve) shall be surrendered at a Place of Payment
therefor (with, if the Trust or the Trustee so requires, due endorsement by, or
a written instrument of transfer in form satisfactory to the Trust and the
Trustee duly executed by, the Holder thereof or his attorney duly authorized in
writing) and the Trust shall execute and the Trustee shall authenticate and
deliver to the Holder of such Security without service charge a new Security or
Securities of the same series, of any authorized denomination as requested by
such Holder in aggregate principal amount equal to and in exchange for the
unredeemed portion of the principal of the Security so surrendered.

                                 ARTICLE TWELVE

                                 SINKING FUNDS

                 SECTION 1201.  Applicability of Article.  The provisions of
this Article shall be applicable to any sinking fund for the retirement of
Securities of a series except as otherwise specified as contemplated by Section
301 for Securities of such series.

                 The minimum amount of any sinking fund payment provided for by
the terms of 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 terms of such Securities of any series is herein referred
to as an "optional sinking fund payment".  If provided for by the terms of any
Securities of any series, the cash amount of any mandatory sinking fund payment
may be subject to reduction as provided in Section 1202.  Each sinking fund
payment shall be applied to





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<PAGE>   81
the redemption of Securities of any series as provided for by the terms of
Securities of such series.

                 SECTION 1202.  Satisfaction of Sinking Fund Payments with
Securities.  The Trust may, in satisfaction of all or any part of any mandatory
sinking fund payment with respect to the Securities of a series, (1) deliver
Outstanding Securities of such 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) apply as a credit Securities
of such series which have been redeemed either at the election of the Trust
pursuant to the terms of such Securities or through the application of
permitted optional sinking fund payments pursuant to the terms of such
Securities, as provided for by the terms of such Securities, or which have
otherwise been acquired by the Trust; provided that such Securities so
delivered or applied as a credit have not been previously so credited.  Such
Securities shall be received and credited for such purpose by the Trustee at
the applicable Redemption Price specified in such Securities for redemption
through operation of the sinking fund and the amount of such mandatory sinking
fund payment shall be reduced accordingly.

                 SECTION 1203.  Redemption of Securities for Sinking Fund.  Not
less than 60 days prior to each sinking fund payment date for Securities of any
series, the Trust will deliver to the Trustee an Officers' Certificate
specifying the amount of the next ensuing mandatory 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 in the currency or currencies,
currency unit or units or composite currency or currencies in which the
Securities of such series are payable (except as otherwise specified pursuant
to Section 301 for the Securities of such series) and the portion thereof, if
any, which is to be satisfied by delivering and crediting Securities of that
series pursuant to Section 1202, and the optional amount, if any, to be added
in cash to the next ensuing mandatory sinking fund payment, and will also
deliver to the Trustee any Securities to be so delivered and credited.  If such
Officers' Certificate shall specify an optional amount to be added in cash to
the next ensuing mandatory sinking fund payment, the Trust shall thereupon be
obligated to pay the amount therein specified.  Not less than 30 days before
each such sinking fund payment date the Trustee shall select the Securities to
be redeemed upon such sinking fund payment date in the manner specified in
Section 1103 and cause notice of the redemption thereof to be given in the name
of and at the expense of the Trust in the manner provided in Section 1104.
Such notice having been duly given, the redemption of such Securities shall be
made upon the terms and in the manner stated in Sections 1106 and 1107.


                                ARTICLE THIRTEEN

                       REPAYMENT AT THE OPTION OF HOLDERS

                 SECTION 1301.  Applicability of Article.  Repayment of
Securities of any series before their Stated Maturity at the option of Holders
thereof shall be made in accordance with the





                                       72
<PAGE>   82
terms of such Securities, if any, and (except as otherwise specified by the
terms of such series established pursuant to Section 301) in accordance with
this Article.

                 SECTION 1302.  Repayment of Securities.  Securities of any
series subject to repayment in whole or in part at the option of the Holders
thereof will, unless otherwise provided in the terms of such Securities, be
repaid at a price equal to the principal amount thereof, together with
interest, if any, thereon accrued to the Repayment Date specified in or
pursuant to the terms of such Securities.  The Trust covenants that at least
one Business Day prior to the Repayment Date it will deposit with the Trustee
or with a Paying Agent (or, if the Trust is acting as its own Paying Agent,
segregate and hold in trust as provided in Section 1003) an amount of money in
the currency or currencies, currency unit or units or composite currency or
currencies in which the Securities of such series are payable (except as
otherwise specified pursuant to Section 301 for the Securities of such series)
sufficient to pay the principal (or, if so provided by the terms of the
Securities of any series, a percentage of the principal) of, and (except if the
Repayment Date shall be an Interest Payment Date) accrued interest on, all the
Securities or portions thereof, as the case may be, to be repaid on such date.

                 SECTION 1303.  Exercise of Option.  Securities of any series
subject to repayment at the option of the Holders thereof will contain an
"Option to Elect Repayment" form on the reverse of such Securities.  In order
for any Security to be repaid at the option of the Holder, the Trustee must
receive at the Place of Payment therefor specified in the terms of such
Security (or at such other place or places of which the Trust shall from time
to time notify the Holders of such Securities) not earlier than 60 days nor
later than 30 days prior to the Repayment Date (1) the Security so providing
for such repayment together with the "Option to Elect Repayment" form on the
reverse thereof duly completed by the Holder (or by the Holder's attorney duly
authorized in writing) or (2) a telegram, telex, facsimile transmission or a
letter from a member of a national securities exchange, or the National
Association of Securities Dealers, Inc. ("NASD"), or a commercial bank or trust
company in the United States setting forth the name of the Holder of the
Security, the principal amount of the Security, the principal amount of the
Security to be repaid, the CUSIP number, if any, or a description of the tenor
and terms of the Security, a statement that the option to elect repayment is
being exercised thereby and a guarantee that the Security to be repaid,
together with the duly completed form entitled "Option to Elect Repayment" on
the reverse of the Security, will be received by the Trustee not later than the
fifth Business Day after the date of such telegram, telex, facsimile
transmission or letter; provided, however, that such telegram, telex, facsimile
transmission or letter shall only be effective if such Security and form duly
completed are received by the Trustee by such fifth Business Day.  If less than
the entire principal amount of such Security is to be repaid in accordance with
the terms of such Security, the principal amount of such Security to be repaid,
in increments of the minimum denomination for Securities of such series, and
the denomination or denominations of the Security or Securities to be issued to
the Holder for the portion of the principal amount of such Security surrendered
that is not to be repaid, must be specified.  The principal amount of any
Security providing for repayment at the option of the Holder thereof may not be
repaid in part if, following such repayment, the unpaid principal amount of
such





                                       73
<PAGE>   83
Security would be less than the minimum authorized denomination of Securities
of the series of which such Security to be repaid is a part.  Except as
otherwise may be provided by the terms of any Security providing for repayment
at the option of the Holder thereof, exercise of the repayment option by the
Holder shall be irrevocable unless waived by the Trust.

                 SECTION 1304.  When Securities Presented for Repayment Become
Due and Payable.  If Securities of any series providing for repayment at the
option of the Holders thereof shall have been surrendered as provided in this
Article and as provided by or pursuant to the terms of such Securities, such
Securities or the portions thereof, as the case may be, to be repaid shall
become due and payable and shall be paid by the Trust on the Repayment Date
therein specified, and on and after such Repayment Date (unless the Trust shall
default in the payment of such Securities on such Repayment Date) such
Securities shall, if the same were interest-bearing, cease to bear interest and
the coupons for such interest appertaining to any Bearer Securities so to be
repaid, except to the extent provided below, shall be void.  Upon surrender of
any such Security for repayment in accordance with such provisions, together
with all coupons, if any, appertaining thereto maturing after the Repayment
Date, the principal amount of such Security so to be repaid shall be paid by
the Trust, together with accrued interest, if any, to the Repayment Date;
provided, however, that coupons whose Stated Maturity is on or prior to the
Repayment Date shall be payable only at an office or agency located outside the
United States (except as otherwise provided in Section 1002) and, unless
otherwise specified pursuant to Section 301, only upon presentation and
surrender of such coupons; and provided further that, in the case of Registered
Securities, installments of interest, if any, whose Stated Maturity is on or
prior to the Repayment Date shall be payable (but without interest thereon,
unless the Trust shall default in the payment thereof) to the Holders of such
Securities, or one or more Predecessor Securities, registered as such at the
close of business on the relevant Record Dates according to their terms and the
provisions of Section 307.

                 If any Bearer Security surrendered for repayment shall not be
accompanied by all appurtenant coupons maturing after the Repayment Date, such
Security may be paid after deducting from the amount payable therefor as
provided in Section 1302 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 Trust 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 the
Trustee or any Paying Agent any such missing coupon in respect of which a
deduction shall have been made as provided in the preceding sentence, such
Holder shall be entitled to receive the amount so deducted; 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 1002) and, unless otherwise specified as contemplated by Section 301,
only upon presentation and surrender of those coupons.

                 If the principal amount of any Security surrendered for
repayment shall not be so repaid upon surrender thereof, such principal amount
(together with interest, if any, thereon accrued to such Repayment Date) shall,
until paid, bear interest from the Repayment Date at the





                                       74
<PAGE>   84
rate of interest or Yield to Maturity (in the case of Original Issue Discount
Securities) set forth in such Security.

                 SECTION 1305.  Securities Repaid in Part.  Upon surrender of
any Registered Security which is to be repaid in part only, the Trust shall
execute and the Trustee shall authenticate and deliver to the Holder of such
Security, without service charge and at the expense of the Trust, a new
Registered Security or Securities of the same series, of any authorized
denomination specified by the Holder, in an aggregate principal amount equal to
and in exchange for the portion of the principal of such Security so
surrendered which is not to be repaid.


                                ARTICLE FOURTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE

                 SECTION 1401.  Applicability of Article; Trust's Option to
Effect Defeasance or Covenant Defeasance.  If, pursuant to Section 301,
provision is made for either or both of (a) defeasance of the Securities of or
within a series under Section 1402 or (b) covenant defeasance of the Securities
of or within a series under Section 1403, then the provisions of such Section
or Sections, as the case may be, together with the other provisions of this
Article (with such modifications thereto as may be specified pursuant to
Section 301 with respect to any Securities), shall be applicable to such
Securities and any coupons appertaining thereto, and the Trust may at its
option by Board Resolution, at any time, with respect to such Securities and
any coupons appertaining thereto, elect to have Section 1402 (if applicable) or
Section 1403 (if applicable) be applied to such Outstanding Securities and any
coupons appertaining thereto upon compliance with the conditions set forth
below in this Article.

                 SECTION 1402.  Defeasance and Discharge.  Upon the Trust's
exercise of the above option applicable to this Section with respect to any
Securities of or within a series, the Trust shall be deemed to have been
discharged from its obligations with respect to such Outstanding Securities and
any coupons appertaining thereto on the date the conditions set forth in
Section 1404 are satisfied (hereinafter, "defeasance").  For this purpose, such
defeasance means that the Trust shall be deemed to have paid and discharged the
entire indebtedness represented by such Outstanding Securities and any coupons
appertaining thereto, which shall thereafter be deemed to be "Outstanding" only
for the purposes of Section 1405 and the other Sections of this Indenture
referred to in clauses (A) and (B) below, and to have satisfied all of its
other obligations under such Securities and any coupons appertaining thereto
and this Indenture insofar as such Securities and any coupons appertaining
thereto are concerned (and the Trustee, at the expense of the Trust, shall
execute proper instruments acknowledging the same), except for the following
which shall survive until otherwise terminated or discharged hereunder:  (A)
the rights of Holders of such Outstanding Securities and any coupons
appertaining thereto to receive, solely from the trust fund described in
Section 1404 and as more fully set forth in such Section, payments in respect
of the principal of (and premium, if any) and interest, if any, on such





                                       75
<PAGE>   85
Securities and any coupons appertaining thereto when such payments are due, (B)
the Trust's obligations with respect to such Securities under Sections 305,
306, 1002 and 1003 and with respect to the payment of Additional Amounts, if
any, on such Securities as contemplated by Section 1010, (C) the rights,
powers, trusts, duties and immunities of the Trustee hereunder and (D) this
Article.  Subject to compliance with this Article Fourteen, the Trust may
exercise its option under this Section notwithstanding the prior exercise of
its option under Section 1403 with respect to such Securities and any coupons
appertaining thereto.

                 SECTION 1403.  Covenant Defeasance.  Upon the Trust's exercise
of the above option applicable to this Section with respect to any Securities
of or within a series, the Trust shall be released from its obligations under
Sections 1004 to 1008, inclusive, Section 1011 and Section 1012, and, if
specified pursuant to Section 301, its obligations under any other covenant,
with respect to such Outstanding Securities and any coupons appertaining
thereto on and after the date the conditions set forth in Section 1404 are
satisfied (hereinafter, "covenant defeasance"), and such Securities and any
coupons appertaining thereto shall thereafter be deemed to be not "Outstanding"
for the purposes of any direction, waiver, consent or declaration or Act of
Holders (and the consequences of any thereof) in connection with Sections 1004
to 1008, inclusive, Section 1011 or Section 1012, or such other covenant, but
shall continue to be deemed "Outstanding" for all other purposes hereunder.
For this purpose, such covenant defeasance means that, with respect to such
Outstanding Securities and any coupons appertaining thereto, the Trust may omit
to comply with and shall have no liability in respect of any term, condition or
limitation set forth in any such Section or such other covenant, whether
directly or indirectly, by reason of any reference elsewhere herein to any such
Section or such other covenant or by reason of reference in any such Section or
such other covenant to any other provision herein or in any other document and
such omission to comply shall not constitute a default or an Event of Default
under Section 501(4) or 501(8) or otherwise, as the case may be, but, except as
specified above, the remainder of this Indenture and such Securities and any
coupons appertaining thereto shall be unaffected thereby.

                 SECTION 1404.  Conditions to Defeasance or Covenant
Defeasance.  The following shall be the conditions to application of Section
1402 or Section 1403 to any Outstanding Securities of or within a series and
any coupons appertaining thereto:

                 (a)       The Trust shall irrevocably have deposited or caused
         to be deposited with the Trustee (or another trustee satisfying the
         requirements of Section 607 who shall agree to comply with the
         provisions of this Article Fourteen applicable to it) as trust funds
         in trust for the purpose of making the following payments,
         specifically pledged as security for, and dedicated solely to, the
         benefit of the Holders of such Securities and any coupons appertaining
         thereto, (1) an amount in such currency, currencies or currency unit
         in which such Securities and any coupons appertaining thereto are then
         specified as payable at Stated Maturity, or (2) Government Obligations
         applicable to such Securities and coupons appertaining thereto
         (determined on the basis of the currency, currencies or currency unit
         in which such Securities and coupons appertaining thereto are then





                                       76
<PAGE>   86
         specified as payable at Stated Maturity) which through the scheduled
         payment of principal and interest in respect thereof in accordance
         with their terms will provide, not later than one day before the due
         date of any payment of principal of (and premium, if any) and
         interest, if any, on such Securities and any coupons appertaining
         thereto, money in an amount, or (3) a combination thereof, in any
         case, in an amount, sufficient, without consideration of any
         reinvestment of such principal and interest, in the opinion of a
         nationally recognized firm of independent public accountants expressed
         in a written certification thereof delivered to the Trustee, to pay
         and discharge, and which shall be applied by the Trustee (or other
         qualifying trustee) to pay and discharge, (i) the principal of (and
         premium, if any) and interest, if any, on such Outstanding Securities
         and any coupons appertaining thereto on the Stated Maturity of such
         principal or installment of principal or interest and (ii) any
         mandatory sinking fund payments or analogous payments applicable to
         such Outstanding Securities and any coupons appertaining thereto on
         the day on which such payments are due and payable in accordance with
         the terms of this Indenture and of such Securities and any coupons
         appertaining thereto.

                 (b)      Such defeasance or covenant defeasance shall not
         result in a breach or violation of, or constitute a default under,
         this Indenture or any other material agreement or instrument to which
         the Trust is a party or by which it is bound.

                 (c)      No Event of Default or event which with notice or
         lapse of time or both would become an Event of Default with respect to
         such Securities and any coupons appertaining thereto shall have
         occurred and be continuing on the date of such deposit or, insofar as
         Sections 501(6) and 501(7) are concerned, at any time during the
         period ending on the 91st day after the date of such deposit (it being
         understood that this condition shall not be deemed satisfied until the
         expiration of such period).

                 (d)  In the case of an election under Section 1402, the Trust
         shall have delivered to the Trustee an Opinion of Counsel stating that
         (i) the Trust has received from, or there has been published by, the
         Internal Revenue Service a ruling, or (ii) since the date of execution
         of this Indenture, there has been a change in the applicable Federal
         income tax law, in either case to the effect that, and based thereon
         such opinion shall confirm that, the Holders of such Outstanding
         Securities and any coupons appertaining thereto will not recognize
         income, gain or loss for Federal income tax purposes as a result of
         such defeasance and will be subject to Federal income tax on the same
         amounts, in the same manner and at the same times as would have been
         the case if such defeasance had not occurred.

                 (e)  In the case of an election under Section 1403, the Trust
         shall have delivered to the Trustee an Opinion of Counsel to the
         effect that the Holders of such Outstanding Securities and any coupons
         appertaining thereto will not recognize income, gain or loss for
         Federal income tax purposes as a result of such covenant defeasance
         and will be





                                       77
<PAGE>   87
         subject to Federal income tax on the same amounts, in the same manner
         and at the same times as would have been the case if such covenant
         defeasance had not occurred.

                 (f)  The Trust shall have delivered to the Trustee an
         Officers' Certificate and an Opinion of Counsel, each stating that all
         conditions precedent to the defeasance under Section 1402 or the
         covenant defeasance under Section 1403 (as the case may be) have been
         complied with and an Opinion of Counsel to the effect that either (i)
         as a result of a deposit pursuant to subsection (a) above and the
         related exercise of the Trust's option under Section 1402 or Section
         1403 (as the case may be), registration is not required under the
         Investment Trust Act of 1940, as amended, by the Trust, with respect
         to the trust funds representing such deposit or by the Trustee for
         such trust funds or (ii) all necessary registrations under said Act
         have been effected.

                 (g)  Notwithstanding any other provisions of this Section,
         such defeasance or covenant defeasance shall be effected in compliance
         with any additional or substitute terms, conditions or limitations
         which may be imposed on the Trust in connection therewith pursuant to
         Section 301.

                 SECTION 1405.  Deposited Money and Government Obligations to
Be Held in Trust; Other Miscellaneous Provisions.  Subject to the provisions of
the last paragraph of Section 1003, all money and Government Obligations (or
other property as may be provided pursuant to Section 301) (including the
proceeds thereof) deposited with the Trustee (or other qualifying trustee,
collectively for purposes of this Section 1405, the "Trustee") pursuant to
Section 1404 in respect of any Outstanding Securities of any series and any
coupons appertaining thereto shall be held in trust and applied by the Trustee,
in accordance with the provisions of such Securities and any coupons
appertaining thereto and this Indenture, to the payment, either directly or
through any Paying Agent (including the Trust acting as its own Paying Agent)
as the Trustee may determine, to the Holders of such Securities and any coupons
appertaining thereto of all sums due and to become due thereon in respect of
principal (and premium, if any) and interest and Additional Amounts, if any,
but such money need not be segregated from other funds except to the extent
required by law.

                 Unless otherwise specified with respect to any Security
pursuant to Section 301, if, after a deposit referred to in Section 1404(a) has
been made, (a) the Holder of a Security in respect of which such deposit was
made is entitled to, and does, elect pursuant to Section 301 or the terms of
such Security to receive payment in a currency or currency unit other than that
in which the deposit pursuant to Section 1404(a) has been made in respect of
such Security, or (b) a Conversion Event occurs in respect of the currency or
currency unit in which the deposit pursuant to Section 1404(a) has been made,
the indebtedness represented by such Security and any coupons appertaining
thereto shall be deemed to have been, and will be, fully discharged and
satisfied through the payment of the principal of (and premium, if any), and
interest, if any, on such Security as the same becomes due out of the proceeds
yielded by converting (from time to time as specified below in the case of any
such election) the amount or other property deposited





                                       78
<PAGE>   88
in respect of such Security into the currency or currency unit in which such
Security becomes payable as a result of such election or Conversion Event based
on the applicable market exchange rate for such currency or currency unit in
effect on the second Business Day prior to each payment date, except, with
respect to a Conversion Event, for such currency or currency unit in effect (as
nearly as feasible) at the time of the Conversion Event.

                 The Trust shall pay and indemnify the Trustee against any tax,
fee or other charge imposed on or assessed against the Government Obligations
deposited pursuant to Section 1404 or the principal and interest received in
respect thereof other than any such tax, fee or other charge which by law is
for the account of the Holders of such Outstanding Securities and any coupons
appertaining thereto.

                 Anything in this Article to the contrary notwithstanding,
subject to Section 606, the Trustee shall deliver or pay to the Trust from time
to time upon Trust Request any money or Government Obligations (or other
property and any proceeds therefrom) held by it as provided in Section 1404
which, in the opinion of a nationally recognized firm of independent public
accountants expressed in a written certification thereof delivered to the
Trustee, are in excess of the amount thereof which would then be required to be
deposited to effect a defeasance or covenant defeasance, as applicable, in
accordance with this Article.


                                ARTICLE FIFTEEN

                       MEETINGS OF HOLDERS OF SECURITIES

                 SECTION 1501.  Purposes for Which Meetings May Be Called.  A
meeting of Holders of Securities of any 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 action
provided by this Indenture to be made, given or taken by Holders of Securities
of such series.

                 SECTION 1502.  Call, Notice and Place of Meetings.  (a)  The
Trustee may at any time call a meeting of Holders of Securities of any series
for any purpose specified in Section 1501, to be held at such time and at such
place in the Borough of Manhattan, New York City, or in London as the Trustee
shall determine.  Notice of every meeting of Holders of 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 106, not less than 21 nor more than 180 days prior
to the date fixed for the meeting.

                 (b)  In case at any time the Trust, pursuant to a Board
Resolution, or the Holders of at least 10% in principal amount of the
Outstanding Securities of any series shall have requested the Trustee to call a
meeting of the Holders of Securities of such series for any purpose specified
in Section 1501, by written request setting forth in reasonable detail the
action





                                       79
<PAGE>   89
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 Trust or the Holders of 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, New York City, 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 1503.  Persons Entitled to Vote at Meetings.  To be
entitled to vote at any meeting of Holders of Securities of any series, a
Person shall be (1) a Holder of one or more Outstanding 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 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 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 Trust and its
counsel.

                 SECTION 1504.  Quorum; Action.  The Persons entitled to vote a
majority in principal amount of the Outstanding Securities of a series shall
constitute a quorum for a meeting of Holders of 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 specified percentage in principal
amount of the Outstanding Securities of a series, the Persons entitled to vote
such specified percentage in principal amount of the Outstanding Securities of
such series shall constitute a quorum.  In the absence of a quorum within 30
minutes after the time appointed for any such meeting, the meeting shall, if
convened at the request of Holders of Securities of such series, be dissolved.
In any other case the meeting may be adjourned for a period of not less than 10
days as determined by the chairman of the meeting prior to the adjournment of
such meeting.  In the absence of a quorum at the reconvening of any such
adjourned meeting, such adjourned meeting may be further adjourned for a period
of not less than 10 days; at the reconvening of any meeting adjourned or
further adjourned for lack of a quorum, the persons entitled to vote 25% in the
aggregate principal amount of the Securities at the time outstanding shall
constitute a quorum for the taking of any action set forth in the notice of the
original meeting.  Notice of the reconvening of any adjourned meeting shall be
given as provided in Section 1502(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.

                 Except as limited by the proviso to Section 902, any
resolution presented to a meeting or adjourned meeting duly reconvened at which
a quorum is present as aforesaid may be adopted by the affirmative vote of the
persons entitled to vote a majority in aggregate principal amount of the
Outstanding Securities represented at such meeting; provided, however, that,
except as limited by the proviso to Section 902, any resolution with respect to
any request, demand, authorization, direction, notice, consent, waiver or other
action which this Indenture





                                       80
<PAGE>   90
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 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 Securities of that series.

                 Any resolution passed or decision taken at any meeting of
Holders of Securities of any series duly held in accordance with this Section
shall be binding on all the Holders of Securities of such series and the
related coupons, whether or not present or represented at the meeting.

                 Notwithstanding the foregoing provisions of this Section 1504,
if any action is to be taken at a meeting of Holders of Securities of any
series with respect to any request, demand, authorization, direction, notice,
consent, waiver or other action that this Indenture expressly provides may be
made, given or taken by the Holders of a specified percentage in principal
amount of all Outstanding Securities affected thereby, or of the Holders of
such series and one or more additional series:

                 (i)  there shall be no minimum quorum requirement for such 
         meeting; and

             (ii)  the principal amount of the Outstanding Securities of such
         series that vote in favor of such request, demand, authorization,
         direction, notice, consent, waiver or other action shall be taken into
         account in determining whether such request, demand, authorization,
         direction, notice, consent, waiver or other action has been made,
         given or taken under this Indenture.

                 SECTION 1505.  Determination of Voting Rights; Conduct and
Adjournment of Meetings.  (a)  Notwithstanding any provisions of this
Indenture, the Trustee may make such reasonable regulations as it may deem
advisable for any meeting of Holders of Securities of a series in regard to
proof of the holding of 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 Securities shall be proved in the manner
specified in Section 104 and the appointment of any proxy shall be proved in
the manner specified in Section 104 or by having the signature of the Person
executing the proxy witnessed or guaranteed by any trust company, bank or
banker authorized by Section 104 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 104 or other proof.

                 (b)  The Trustee shall, by an instrument in writing appoint a
temporary chairman of the meeting, unless the meeting shall have been called by
the Trust or by Holders of Securities





                                       81
<PAGE>   91
as provided in Section 1502(b), in which case the Trust or the Holders of
Securities of the series calling the meeting, as the case may be, shall in like
manner appoint a temporary chairman.  A permanent chairman 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 Securities of such
series represented at the meeting.

                 (c)  At any meeting each Holder of a Security of such series
or proxy shall be entitled to one vote for each $1,000 principal amount of the
Outstanding 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
Security challenged as not Outstanding and ruled by the chairman of the meeting
to be not Outstanding.  The chairman of the meeting shall have no right to
vote, except as a Holder of a Security of such series or proxy.

                 (d)  Any meeting of Holders of Securities of any series duly
called pursuant to Section 1502 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 Securities of such series represented at the meeting, and the
meeting may be held as so adjourned without further notice.

                 SECTION 1506.  Counting Votes and Recording Action of
Meetings.  The vote upon any resolution submitted to any meeting of Holders of
Securities of any series shall be by written ballots on which shall be
subscribed the signatures of the Holders of Securities of such series or of
their representatives by proxy and the principal amounts and serial numbers of
the Outstanding Securities of such series held or represented by them.  The
permanent chairman 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 duplicate of all votes cast at the meeting.  A record, at least in
duplicate, of the proceedings of each meeting of Holders of 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 fact, setting forth a copy of the notice of the meeting and
showing that said notice was given as provided in Section 1502 and, if
applicable, Section 1504.  Each copy shall be signed and verified by the
affidavits of the permanent chairman and secretary of the meeting and one such
copy shall be delivered to the Trust 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.


                                   * * * * *





                                       82
<PAGE>   92
                 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.





                                       83
<PAGE>   93
                 IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed all as of the day and year first above written.


                                     WASHINGTON REAL ESTATE INVESTMENT TRUST
                                     
                                     
                                     By:
                                        ----------------------------
                                        Title:
Attest:                              
                                     
                                     
- ----------------------------         
Title:                               
                                     
                                     
                                     THE FIRST NATIONAL BANK OF CHICAGO
                                       as Trustee
                                     
                                     
                                     By:
                                        ----------------------------
                                        Title:
                                     
Attest:                              
                                     
                                     
- ----------------------------         
Title:                               





                                       84
<PAGE>   94

STATE OF MARYLAND    )
                     ) ss:
COUNTY OF MONTGOMERY )


         On the _____ day of June 1996, before me personally came
___________________, to me known, who, being by me duly sworn, did depose and
say that he/she resides at _________________,   ____________ ________, that
he/she is _______________ of WASHINGTON REAL ESTATE INVESTMENT TRUST, one of
the parties described in and which executed the foregoing instrument, and that
he/she signed his/her name thereto by authority of the Board of Trustees.

[Notarial Seal]

                               -------------------------
                               Notary Public
                               COMMISSION EXPIRES



STATE OF ________         )
                          ) ss:
COUNTY OF ________        )

                 On the _____ day of June 1996, before me personally came
___________________, to me known, who, being by me duly sworn, did depose and
say that he/she resides at _______________, that he/she is a ________________
of THE FIRST NATIONAL BANK OF CHICAGO, one of the parties described in and
which executed the foregoing instrument, and that he/she signed his/her name
thereto by authority of the Board of Directors.

[Notarial Seal]

                               -------------------------
                               Notary Public
                               COMMISSION EXPIRES





                                       85
<PAGE>   95
                                   EXHIBIT A

                             FORMS OF CERTIFICATION



                                  EXHIBIT A-1

               FORM OF CERTIFICATE TO BE GIVEN BY PERSON ENTITLED
                TO RECEIVE BEARER SECURITY OR TO OBTAIN INTEREST
                       PAYABLE PRIOR TO THE EXCHANGE DATE

                                  CERTIFICATE


[Insert title or sufficient description of Securities to be delivered]

                 This is to certify that, as of the date hereof, and except as
set forth below, the above-captioned Securities held by you for our account (i)
are owned by person(s) that are not citizens or residents of the United States,
domestic partnerships, domestic corporations or any estate or trust the income
of which is subject to United States federal income taxation regardless of its
source ("United States person(s)"), (ii) are owned by United States person(s)
that are (a) foreign branches of United States financial institutions
(financial institutions, as defined in United States Treasury Regulations
Section 2.165-12(c)(1)(v) are herein referred to as "financial institutions")
purchasing for their own account or for resale, or (b) United States person(s)
who acquired the Securities through foreign branches of United States financial
institutions and who hold the Securities through such United States financial
institutions on the date hereof (and in either case (a) or (b), each such
United States financial institution hereby agrees, on its own behalf or through
its agent, that you may advise Washington Real Estate Investment Trust or its
agent that such financial institution will comply with the requirements of
Section 165(j)(3)(A), (B) or (C) of the United States Internal Revenue Code of
1986, as amended, and the regulations thereunder), or (iii) are owned by United
States or foreign financial institution(s) for purposes of resale during the
restricted period (as defined in United States Treasury Regulations Section
1.163-5(c)(2)(i)(D)(7)), and, in addition, if the owner is a United States or
foreign financial institution described in clause (iii) above (whether or not
also described in clause (i) or (ii)), this is to further certify that such
financial institution has not acquired the Securities for purposes of resale
directly or indirectly to a United States person or to a person within the
United States or its possessions.

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





<PAGE>   96
                 We undertake to advise you promptly by tested telex on or
prior to the date on which you intend to submit your certification relating to
the above-captioned Securities held by you for our account in accordance with
your Operating Procedures if any applicable statement herein is not correct on
such date, and in the absence of any such notification it may be assumed that
this certification applies as of such date.

                 This certificate excepts and does not relate to [U.S.$]
_______________ of such interest in the above-captioned Securities in respect
of which we are not able to certify and as to which we understand an exchange
for an interest in a Permanent Global Security or an exchange for and delivery
of definitive Securities (or, if relevant, collection of any interest) cannot
be made until we do so certify.

                 We understand that this certificate may be required in
connection with certain tax legislation in the United States.  If
administrative or legal proceedings are commenced or threatened in connection
with which this certificate is or would be relevant, we irrevocably authorize
you to produce this certificate or a copy thereof to any interested party in
such proceedings.



Dated: __________________, 19__
[To be dated no earlier than the 15th day prior
to (i) the Exchange Date or (ii) the relevant
Interest Payment Date occurring prior to the
Exchange Date, as applicable]
 
                                     [Name of Person Making
                                 Certification]


                                     -----------------
                                     (Authorized Signator)
                                     Name:
                                     Title:





<PAGE>   97
                                  EXHIBIT A-2

                  FORM OF CERTIFICATE TO BE GIVEN BY EUROCLEAR
               AND CEDEL S.A. IN CONNECTION WITH THE EXCHANGE OF
                 A PORTION OF A TEMPORARY GLOBAL SECURITY OR TO
               OBTAIN INTEREST PAYABLE PRIOR TO THE EXCHANGE DATE

                                  CERTIFICATE


[Insert title or sufficient description of Securities to be delivered]

                 This is to certify that, based solely on written
certifications that we have received in writing, by tested telex or by
electronic transmission from each of the persons appearing in our records as
persons entitled to a portion of the principal amount set forth below (our
"Member Organizations") substantially in the form attached hereto, as of the
date hereof, [U.S.$] _______ _______ principal amount of the above-captioned
Securities (i) is owned by person(s) that are not citizens or residents of the
United States, domestic partnerships, domestic corporations or any estate or
trust the income of which is subject to United States Federal income taxation
regardless of its source ("United States person(s)"), (ii) is owned by United
States person(s) that are (a) foreign branches of United States financial
institutions (financial institutions, as defined in U.S. Treasury Regulations
Section 1.165-12(c)(1)(v) are herein referred to as "financial institutions")
purchasing for their own account or for resale, or (b) United States person(s)
who acquired the Securities through foreign branches of United States financial
institutions and who hold the Securities through such United States financial
institutions on the date hereof (and in either case (a) or (b), each such
financial institution has agreed, on its own behalf or through its agent, that
we may advise Washington Real Estate Investment Trust or its agent that such
financial institution will comply with the requirements of Section
165(j)(3)(A), (B) or (C) of the Internal Revenue Code of 1986, as amended, and
the regulations thereunder), or (iii) is owned by United States or foreign
financial institution(s) for purposes of resale during the restricted period
(as defined in United States Treasury Regulations Section
1.163-5(c)(2)(i)(D)(7)), and, to the further effect, that financial
institutions described in clause (iii) above (whether or not also described in
clause (i) or (ii)) have certified that they have not acquired the Securities
for purposes of resale directly or indirectly to a United States person or to a
person within the United States or its possessions.

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

                 We further certify that (i) we are not making available
herewith for exchange (or, if relevant, collection of any interest) any portion
of the temporary global Security representing





<PAGE>   98
the above- captioned Securities excepted in the above referenced certificates
of Member Organizations and (ii) as of the date hereof we have not received any
notification from any of our Member Organizations to the effect that the
statements made by such Member Organizations with respect to any portion of the
part submitted herewith for exchange (or, if relevant, collection of any
interest) are no longer true and cannot be relied upon as of the date hereof.

                 We understand that this certification is required in
connection with certain tax legislation in the United States.  If
administrative or legal proceedings are commenced or threatened in connection
with which this certificate is or would be relevant, we irrevocably authorize
you to produce this certificate or a copy thereof to any interested party in
such proceedings.


Dated: _____________ 19__
[To be dated no earlier than the Exchange Date
or the relevant Interest Payment Date occurring
prior to the Exchange Date, as applicable]


                             [Morgan Guaranty Trust
                               Trust of New York,
                               Brussels Office,] as
                             Operator of the
                               Euroclear System
                               [Cedel S.A.]



                             By:
                                -------------------





<PAGE>   1
Exhibit 12 - Calculation of Earnings to Fixed Charges:



<TABLE>
<CAPTION>
                                                Three Months
                                                   Ended
                                                 March 31,     Year Ended December 31,
                                                ------------   ------------------------------------------------------------------
                                                    1996          1995          1994         1993        1992         1991
                                                ------------   ------------------------------------------------------------------
<S>                                              <C>           <C>           <C>          <C>          <C>          <C>
Pre-tax income from
  continuing operations                          $6,952,400    $26,103,300   $23,122,200  $22,506,200  $20,429,300  $18,386,400
                                                 ----------    -----------   -----------  -----------  -----------  -----------

Adjustments for fixed charges:

Interest expense                                    654,200      2,169,800       614,200       61,500      454,400    1,080,100
Amortization of debt service costs                    5,500         15,200             0            0        8,500        5,400
                                                     ------         ------            --           --        -----        -----
                                                    659,700      2,185,000       614,200       61,500      462,900    1,085,500
                                                    -------      ---------       -------       ------      -------    ---------
Earnings as adjusted                             $7,612,100    $28,288,300   $23,736,400  $22,567,700  $20,892,200  $19,471,900
                                                 ----------    -----------   -----------  -----------  -----------  -----------

Ratio of earnings to fixed charges:

Earnings as adjusted (A)                          7,612,100     28,288,300    23,736,400   22,567,700   20,892,200   19,471,900
Fixed charges (B)                                   659,700      2,185,000       614,200       61,500      462,900    1,085,500

Ratio of (A) to (B)                                   11.54          12.95         38.65       366.95        45.13        17.94
</TABLE>


<PAGE>   1

                                                                     EXHIBIT 23a






                      CONSENT OF INDEPENDENT ACCOUNTANTS



We hereby consent to the incorporation by reference in the Prospectus
constituting part of this Registration Statement on Form S-3 of our report
dated March 27, 1996 appearing on page 20 of Washington Real Estate Investment
Trust's Annual Report on Form 10-K for the year ended December 31, 1995.  We
also consent to the reference to us under the heading "Experts".


/s/ PRICE WATERHOUSE LLP
PRICE WATERHOUSE LLP
Washington, D.C.
June 11, 1996


<PAGE>   1

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM T-1

                            STATEMENT OF ELIGIBILITY
                     UNDER THE TRUST INDENTURE ACT OF 1939
                 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

                CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY
                OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) _____

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

                       THE FIRST NATIONAL BANK OF CHICAGO
              (EXACT NAME OF TRUSTEE AS SPECIFIED IN ITS CHARTER)

<TABLE>
<S>                                                                          <C>
    A NATIONAL BANKING ASSOCIATION                                             36-0899825
                                                                             (I.R.S. EMPLOYER
                                                                             IDENTIFICATION NUMBER)

ONE FIRST NATIONAL PLAZA, CHICAGO, ILLINOIS                                  60670-0126
         (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                            (ZIP CODE)
</TABLE>

                       THE FIRST NATIONAL BANK OF CHICAGO
                      ONE FIRST NATIONAL PLAZA, SUITE 0286
                         CHICAGO, ILLINOIS   60670-0286
            ATTN:  LYNN A. GOLDSTEIN, LAW DEPARTMENT (312) 732-6919
           (NAME, ADDRESS AND TELEPHONE NUMBER OF AGENT FOR SERVICE)

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

                    WASHINGTON REAL ESTATE INVESTMENT TRUST
              (EXACT NAME OF OBLIGOR AS SPECIFIED IN ITS CHARTER)



<TABLE>
<S>                                                                 <C>
         DISTRICT OF COLUMBIA                                                53-0261100
   (STATE OR OTHER JURISDICTION OF                                           (I.R.S. EMPLOYER
   INCORPORATION OR ORGANIZATION)                                   IDENTIFICATION NUMBER)


         10400 CONNECTICUT AVENUE
         KENSINGTON, MD                                                      20895
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                                     (ZIP CODE)
</TABLE>


                                DEBT SECURITIES
                        (TITLE OF INDENTURE SECURITIES)





<PAGE>   2



ITEM 1.          GENERAL INFORMATION.  FURNISH THE FOLLOWING INFORMATION AS TO 
                 THE TRUSTEE:

                 (a)      NAME AND ADDRESS OF EACH EXAMINING OR SUPERVISING
                 AUTHORITY TO WHICH IT IS SUBJECT.

                 Comptroller of Currency, Washington, D.C., Federal Deposit
                 Insurance Corporation, Washington, D.C., The Board of
                 Governors of the Federal Reserve System, Washington D.C.

                 (b)      WHETHER IT IS AUTHORIZED TO EXERCISE CORPORATE TRUST
                 POWERS.

                 The trustee is authorized to exercise corporate trust powers.

ITEM 2.          AFFILIATIONS WITH THE OBLIGOR.  IF THE OBLIGOR IS AN 
                 AFFILIATE OF THE TRUSTEE, DESCRIBE EACH SUCH AFFILIATION.

                 No such affiliation exists with the trustee.


ITEM 16.         LIST OF EXHIBITS.   LIST BELOW ALL EXHIBITS FILED AS A PART OF
                 THIS STATEMENT OF ELIGIBILITY.

                 1.  A copy of the articles of association of the trustee now
                     in effect.*

                 2.  A copy of the certificates of authority of the trustee to
                     commence business.*

                 3.  A copy of the authorization of the trustee to exercise
                     corporate trust powers.*

                 4.  A copy of the existing by-laws of the trustee.*

                 5.  Not Applicable.

                 6.  The consent of the trustee required by Section 321(b) of
                     the Act.





                                      2
<PAGE>   3

                 7.  A copy of the latest report of condition of the trustee
                     published pursuant to law or the requirements of its
                     supervising or examining authority.

                 8.  Not Applicable.

                 9.  Not Applicable.


         Pursuant to the requirements of the Trust Indenture Act of 1939, as
         amended, the trustee, The First National Bank of Chicago, a national
         banking association organized and existing under the laws of the
         United States of America, has duly caused this Statement of
         Eligibility to be signed on its behalf by the undersigned, thereunto
         duly authorized, all in the City of Chicago and State of Illinois, on
         the   5th day of, 1996.


                 THE FIRST NATIONAL BANK OF CHICAGO,
                 TRUSTEE

                 BY    /S/ RICHARD D. MANELLA

                          RICHARD D. MANELLA
                          VICE PRESIDENT





* EXHIBIT 1,2,3 AND 4 ARE HEREIN INCORPORATED BY REFERENCE TO EXHIBITS BEARING
IDENTICAL NUMBERS IN ITEM 12 OF THE FORM T-1 OF THE FIRST NATIONAL BANK OF
CHICAGO, FILED AS EXHIBIT 26 TO THE REGISTRATION STATEMENT ON FORM S-3 OF THE
CIT GROUP HOLDINGS, INC., FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON
FEBRUARY 16, 1993 (REGISTRATION NO. 33-58418).





                                       3
<PAGE>   4

                                   EXHIBIT 6



                      THE CONSENT OF THE TRUSTEE REQUIRED
                          BY SECTION 321(b) OF THE ACT


                                  June 5, 1996



Securities and Exchange Commission
Washington, D.C.  20549

Gentlemen:

In connection with the qualification of an indenture between Washington Real
Estate Investment Trust and The First National Bank of Chicago, the
undersigned, in accordance with Section 321(b) of the Trust Indenture Act of
1939, as amended, hereby consents that the reports of examinations of the
undersigned, made by Federal or State authorities authorized to make such
examinations, may be furnished by such authorities to the Securities and
Exchange Commission upon its request therefor.


                                  VERY TRULY YOURS,

                                  THE FIRST NATIONAL BANK OF CHICAGO

                                  BY:      /S/ RICHARD D. MANELLA

                                           RICHARD D. MANELLA
                                           VICE PRESIDENT





                                       4
<PAGE>   5
                                   EXHIBIT 7

<TABLE>
<S>                               <C>                                        <C>                  
Legal Title of Bank:              The First National Bank of Chicago         Call Date: 03/31/96  ST-BK:  17-1630 FFIEC 031
Address:                          One First National Plaza, Suite 0460                                          Page RC-1
City, State  Zip:                 Chicago, IL  60670-0460
FDIC Certificate No.:             0/3/6/1/8
                                  ---------
</TABLE>

CONSOLIDATED REPORT OF CONDITION FOR INSURED COMMERCIAL
AND STATE-CHARTERED SAVINGS BANKS FOR MARCH 31, 1996

All schedules are to be reported in thousands of dollars.  Unless otherwise
indicated, report the amount outstanding of the last business day of the
quarter.

SCHEDULE RC--BALANCE SHEET


<TABLE>
<CAPTION>
                                                                                                               C400           <-
                                                                            DOLLAR AMOUNTS IN                ------------   -------
                                                                                THOUSANDS            RCFD    BIL MIL THOU    
                                                                            ------------------       ----    ------------    
<S>                                                                          <C>                      <C>        <C>          <C>
ASSETS                                                                                                                       
1.  Cash and balances due from depository institutions (from Schedule                                                        
    RC-A):                                                                                                                   
    a. Noninterest-bearing balances and currency and coin(1) ..............                           0081        3,047,140   1.a.
    b. Interest-bearing balances(2) .......................................                           0071        8,488,390   1.b.
2.  Securities                                                                                                               
    a. Held-to-maturity securities(from Schedule RC-B, column A)                                      1754                0   2.a.
    b. Available-for-sale securities (from Schedule RC-B, column D)........                           1773          997,155   2.b.
3.  Federal funds sold and securities purchased under agreements to                                                          
    resell in domestic offices of the bank and its Edge and Agreement                                                        
    subsidiaries, and in IBFs:                                                                                               
    a. Federal Funds sold .................................................                           0276        3,384,301   3.a.
    b. Securities purchased under agreements to resell  ...................                           0277          685,531   3.b.
4.  Loans and lease financing receivables:                                                                                   
    a. Loans and leases, net of unearned income (from Schedule                                                               
    RC-C) .................................................................  RCFD 2122 16,884,488                             4.a.
    b. LESS: Allowance for loan and lease losses  .........................  RCFD 3123    358,448                             4.b.
    c. LESS: Allocated transfer risk reserve ..............................  RCFD 3128          0                             4.c.
    d. Loans and leases, net of unearned income, allowance, and                                                              
       reserve (item 4.a minus 4.b and 4.c) ...............................                           2125       16,526,040   4.d.
5.  Assets held in trading accounts .......................................                           3545       10,974,841   5.
6.  Premises and fixed assets (including capitalized leases) ..............                           2145          592,581   6.
7.  Other real estate owned (from Schedule RC-M)  .........................                           2150            9,952   7.
8.  Investments in unconsolidated subsidiaries and associated                                                                 
    companies (from Schedule RC-M)  .......................................                           2130           42,098   8.
9.  Customers' liability to this bank on acceptances outstanding  .........                           2155          564,435   9.
10. Intangible assets (from Schedule RC-M) ................................                           2143           96,463   10.
11. Other assets (from Schedule RC-F)  ....................................                           2160        1,703,124   11.
12. Total assets (sum of items 1 through 11) ..............................                           2170       47,112,051   12.
</TABLE>

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

(1)  Includes cash items in process of collection and unposted debits.
(2)  Includes time certificates of deposit not held in trading accounts.





                                       5
<PAGE>   6
<TABLE>
<S>                               <C>                                        <C>          
Legal Title of Bank:              The First National Bank of Chicago         Call Date:   03/31/96 ST-BK:  17-1630 FFIEC 031
Address:                          One First National Plaza, Suite 0460                                           Page RC-2
City, State  Zip:                 Chicago, IL  60670-0460
FDIC Certificate No.:             0/3/6/1/8
                                  ---------
</TABLE>

SCHEDULE RC-CONTINUED
<TABLE>
<CAPTION>
                                                                DOLLAR AMOUNTS IN
                                                                    Thousands                     BIL MIL THOU
                                                                ----------------                   ------------
<S>                                                             <C>                    <C>        <C>               <C>
LIABILITIES                                                                                       
13. Deposits:                                                                                     
    a. In domestic offices (sum of totals of columns A and C                                      
       from Schedule RC-E, part 1)  ...........................                        RCON 2200     14,251,874     13.a.
       (1) Noninterest-bearing(1).............................. RCON 6631  5,707,786                                13.a.(1)
       (2) Interest-bearing ................................... RCON 6636  8,544,088                                13.a.(2)
    b. In foreign offices, Edge and Agreement subsidiaries, and                                   
       IBFs (from Schedule RC-E, part II) .....................                        RCFN 2200     12,839,836     13.b.
       (1) Noninterest bearing  ............................... RCFN 6631    196,311                                13.b.(1)
       (2) Interest-bearing                                     RCFN 6636 12,643,525                                13.b.(2)
14. Federal funds purchased and securities sold under 
    agreements to repurchase in domestic offices of the
    bank and of its Edge and Agreement subsidiaries, and in 
    IBFs:                                             
    a. Federal funds purchased  ................................                       RCFD 0278      2,692,008      14.a.
    b. Securities sold under agreements to repurchase ..........                       RCFD 0279      1,165,032      14.b.
15. a. Demand notes issued to the U.S. Treasury ................                       RCON 2840         77,000      15.a.
    b. Trading Liabilities......................................                       RCFD 3548      7,103,300      15.b.
16. Other borrowed money:                                                                         
    a. With original maturity of one year or less ..............                       RCFD 2332      2,223,560      16.a.
    b. With original  maturity of more than one year ...........                       RCFD 2333        144,665      16.b.
17. Mortgage indebtedness and obligations under capitalized                                       
    leases  ....................................................                       RCFD 2910        283,041      17.
18. Bank's liability on acceptance executed and outstanding                            RCFD 2920        564,435      18.
19. Subordinated notes and debentures  .........................                       RCFD 3200      1,275,000      19.
20. Other liabilities (from Schedule RC-G) .....................                       RCFD 2930      1,411,087      20.
21. Total liabilities (sum of items 13 through 20) .............                       RCFD 2948     44,030,838      21.
22. Limited-Life preferred stock and related surplus ...........                       RCFD 3282              0      22.
EQUITY CAPITAL                                                                                    
23. Perpetual preferred stock and related surplus...............                       RCFD 3838              0      23.
24. Common stock................................................                       RCFD 3230        200,858      24.
25. Surplus (exclude all surplus related to preferred stock)                           RCFD 3839      2,320,326      25.
26. a. Undivided profits and capital reserves ..................                       RCFD 3632        559,707      26.a.
    b. Net unrealized holding gains (losses) on                                                   
       available-for-sale securities ...........................                       RCFD 8434            730      26.b.
27. Cumulative foreign currency translation adjustments ........                       RCFD 3284           (408)     27.
28. Total equity capital (sum of items 23 through 27)                                  RCFD 3210      3,081,213      28.
29. Total liabilities, limited-life preferred stock, and equity                                   
    capital (sum of items 21, 22, and 28) ......................                       RCFD 3300     47,112,051      29.
</TABLE>

<TABLE>
<CAPTION>
Memorandum
<S>                                                                                                               <C>
To be reported only with the March Report of Condition.
1.  Indicate in the box at the right the number of the statement below that best describes the  most
    comprehensive level of auditing work performed for the bank by independent external                              Number

    auditors as of any date during 1993 ......................................................................... RCFD  6724    M.1.

1 =  Independent audit of the bank conducted in accordance           4.=     Directors' examination of the bank performed by other
     with generally accepted auditing standards by a certified               external auditors (may be required by state chartering
     public accounting firm which submits a report on the bank               authority)
2 =  Independent audit of the bank's parent holding company          5 =     Review of the bank's financial statements by external
     conducted in accordance with generally accepted auditing                auditors
     standards by a certified public accounting firm which           6 =     Compilation of the bank's financial statements by 
     submits a report on the consolidated holding company                    external auditors
     (but not on the bank separately)                                7 =     Other audit procedures (excluding tax preparation work)
3 =  Directors' examination of the bank conducted in                 8 =     No external audit work
     accordance with generally accepted auditing standards
     by a certified public accounting firm (may be required by
     state chartering authority)
</TABLE>

- -------------------
(1) Includes total demand deposits and noninterest-bearing time and savings
    deposits.





                                       6


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