KEYCORP/NEW
8-K, 1994-07-26
NATIONAL COMMERCIAL BANKS
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<PAGE>
 
               UNITED STATES SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C.  20549



                                   FORM 8-K

                                CURRENT REPORT

                    Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934

Date of Report (date of earliest event reported):  June 10, 1994


                                    KEYCORP
            (Exact name of registrant as specified in its charter)

     Ohio                            0-850                          34-6542451
(State or other                (Commission file                   (IRS Employer
jurisdiction of                     number)                       identification
incorporation)                                                        number)


                127 Public Square, Cleveland, Ohio  44114-1306
         (Address of principal executive offices, including zip code)


Registrant's telephone number, including area code:  (216) 689-3000

<PAGE>
 
Item 5.  Other Events

         KeyCorp and Bankers Trust Company, as Trustee, have executed a Senior 
Indenture and a Subordinated Indenture (collectively, the "Indentures"), each 
dated as of June 10, 1994, in connection with KeyCorp's Universal Shelf 
Registration Statement, as amended, which was filed by KeyCorp with the 
Securities and Exchange Commission on May 16, 1994 and became effective by order
of the Commission on June 10, 1994 (the "Shelf Registration Statement"). Forms 
of each of the Indentures were previously filed with the Commission as Exhibits 
4(c) and 4(d), respectively, to Amendment No. 1 to the Shelf Registration 
Statement on May 19, 1994. Copies of each of the executed Indentures are 
attached to this Form 8-K as Exhibit 4(a) and 4(b), respectively.

Item 7.  Financial Statements, Pro Forma Financial Statements and Exhibits.

(c)      Exhibits
         --------

4(a)     Senior Indenture, by and between KeyCorp and Bankers Trust Company, as 
         Trustee, dated June 10, 1994.

4(b)     Subordinated Indenture, by and between KeyCorp and Bankers Trust
         Company, as Trustee, dated June 10, 1994.




                                   SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the 
Registrant has duly caused this report to be signed on its behalf by the 
undersigned thereunto duly authorized.

                                                KEYCORP
                                              (Registrant)


Date:  July 25, 1994                      /s/ Eric Rasmussen
                                        -------------------------
                                        By: Eric Rasmussen
                                            Senior Vice President


<PAGE>
 
                                                                    Exhibit 4(a)



                                    KEYCORP

                                       TO

                             BANKERS TRUST COMPANY,
                                                  Trustee



                               __________________

                                DEBT SECURITIES
                               __________________

                                   INDENTURE

                           Dated as of June 10, 1994


                               __________________
<PAGE>
 
                                    KEYCORP
                 Certain Sections of this Indenture relating to
                  Sections 310 through 318, inclusive, of the
                          Trust Indenture Act of 1939:

<TABLE> 
<CAPTION> 

Trust Indenture
Act Section                                                  Indenture Section
<S>                                                          <C>  
(S) 310 (a)(1)               .............................   607(a)
        (a)(2)               .............................   607(a)
        (b)                  .............................   607(b), 608
(S) 312 (c)                  .............................   701
(S) 314 (a)                  .............................   703
        (a)(4)               .............................   1005
        (c)(1)               .............................   102
        (c)(2)               .............................   102
        (e)                  .............................   102
(S) 315 (b)                  .............................   601
(S) 316 (a) (last sentence)  .............................   101 ("Outstanding")
        (a)(1)(A)            .............................   502, 512
        (a)(1)(B)            .............................   513
        (b)                  .............................   508
        (c)                  .............................   104(e)
(S) 317 (a)(1)               .............................   503
        (a)(2)               .............................   504
(S) 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.
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE> 
<CAPTION> 

                                                                        Page 
<S>                                                                     <C>  
     PARTIES .........................................................   1   
     RECITALS OF THE COMPANY .........................................   1    
</TABLE> 

                                  ARTICLE ONE

                        Definitions and Other Provisions
                             of General Application
<TABLE>
 
<S>                  <C>                                                <C>
     Section 101.    Definitions......................................   1
     Section 102.    Compliance Certificates and Opinions.............  12
     Section 103.    Form of Documents Delivered to Trustee...........  12
     Section 104.    Acts of Holders; Record Dates....................  13
     Section 105.    Notices, Etc. to Trustee and Company.............  14
     Section 106.    Notice to Holders; Waiver........................  15
     Section 107.    Effect of Headings and Table of Contents.........  16
     Section 108.    Successors and Assigns...........................  16
     Section 109.    Separability Clause..............................  16
     Section 110.    Benefits of Indenture............................  16
     Section 111.    Governing Law....................................  16
     Section 112.    Legal Holidays...................................  17
     Section 113.    Obligations of the Company Not Obligations of the
                     Trustee..........................................  17
 </TABLE>
 
                                 ARTICLE TWO

                                 Security Forms
<TABLE>
 
<S>                  <C>                                                  <C>
     Section 201.    Forms Generally....................................  17
     Section 202.    Form of Trustee's Certificate of Authentication....  18
     Section 203.    Securities Issuable in Global Form.................  18
</TABLE>

                                 ARTICLE THREE

                                 The Securities
<TABLE>
<CAPTION>
 
<S>                  <C>                                                  <C>
     Section 301.    Amount Unlimited; Issuable in Series...............  19
     Section 302.    Denominations......................................  23
     Section 303.    Execution, Authentication, Delivery and Dating.....  24
 
</TABLE>
<PAGE>
 
                                       ii

<TABLE>

     <S>             <C>                                                  <C>
     Section 304.    Temporary Securities...............................  26
     Section 305.    Registration, Registration of Transfer and Exchange  29
     Section 306.    Mutilated, Destroyed, Lost and Stolen Securities...  32
     Section 307.    Payment of Interest; Interest Rights Preserved;
                     Optional Interest Reset............................  33
     Section 308.    Optional Extension of Maturity.....................  36
     Section 309.    Persons Deemed Owners..............................  37
     Section 310.    Cancellation.......................................  38
     Section 311.    Computation of Interest............................  38
     Section 312.    Currency and Manner of Payments in Respect of
                     Securities.........................................  38
     Section 313.    Appointment and Resignation of Successor Exchange
                     Rate Agent.........................................  42
     Section 314.    CUSIP Numbers......................................  43
</TABLE>

                                  ARTICLE FOUR

                           Satisfaction and Discharge
<TABLE> 
     <S>           <C>                                                    <C> 
     Section 401.  Satisfaction and Discharge of Indenture..............  43
     Section 402.  Application of Trust Money...........................  45
</TABLE> 

                                  ARTICLE FIVE

                                    Remedies
<TABLE>
 
     <S>           <C>                                                    <C>
     Section 501.  Events of Default....................................  45
     Section 502.  Acceleration of Maturity; Rescission and Annulment...  47
     Section 503.  Collection of Indebtedness and Suits for Enforcement
                   by Trustee...........................................  49
     Section 504.  Trustee May File Proofs of Claim.....................  49
     Section 505.  Trustee May Enforce Claims Without Possession of
                   Securities...........................................  50
     Section 506.  Application of Money Collected.......................  50
     Section 507.  Limitation on Suits..................................  51
     Section 508.  Unconditional Right of Holders to Receive Principal,
                   Premium and Interest.................................  52
     Section 509.  Restoration of Rights and Remedies...................  52
     Section 510.  Rights and Remedies Cumulative.......................  52
     Section 511.  Delay or Omission Not Waiver.........................  52
     Section 512.  Control by Holders...................................  53
     Section 513.  Waiver of Past Defaults..............................  53
     Section 514.  Waiver of Stay or Extension Laws.....................  54
</TABLE>
<PAGE>
 
                                      iii

                                  ARTICLE SIX

                                  The Trustee
<TABLE>
 
     <S>             <C>                                                  <C>
     Section 601.    Notice of Defaults.................................  54
     Section 602.    Certain Rights of Trustee..........................  54
     Section 603.    Not Responsible for Recitals or Issuance of 
                     Securities.........................................  56
     Section 604.    May Hold Securities................................  56
     Section 605.    Money Held in Trust................................  57
     Section 606.    Compensation and Reimbursement.....................  57
     Section 607.    Corporate Trustee Required; Eligibility............  58
     Section 608.    Resignation and Removal; Appointment of Successor..  58
     Section 609.    Acceptance of Appointment by Successor.............  59
     Section 610.    Merger, Conversion, Consolidation or Succession to
                     Business...........................................  61
     Section 611.    Appointment of Authenticating Agent................  61
</TABLE>
                                 ARTICLE SEVEN

               Holders' Lists and Reports by Trustee and Company
<TABLE>
 
<S>                  <C>                                                  <C>
     Section 701.    Disclosure of Names and Addresses of Holders ......  63
     Section 702.    Reports by Trustee.................................  63
     Section 703.    Reports by Company.................................  63
     Section 704.    Calculation of Orginal Issue Discount..............  64
 </TABLE>
 
                                ARTICLE EIGHT

             Consolidation, Merger, Conveyance, Transfer or Lease
<TABLE> 

     <S>           <C>                  
     Section 801.  Company May Consolidate, Etc., Only on Certain 
                   Terms................................................  64
     Section 802.  Successor Substituted................................  65
</TABLE> 

                                  ARTICLE NINE

                            Supplemental Indentures
<TABLE>
 
     <S>           <C>                                                    <C>
     Section 901.  Supplemental Indentures Without Consent of Holders...  65
     Section 902.  Supplemental Indentures with Consent of Holders......  67
     Section 903.  Execution of Supplemental Indentures.................  68
     Section 904.  Effect of Supplemental Indentures....................  68
</TABLE>
<PAGE>

                                       iv

<TABLE>

     <S>           <C>                                                    <C>
     Section 905.  Conformity with Trust Indenture Act..................  68
     Section 906.  Reference in Securities to Supplemental Indentures...  68
</TABLE>
                                  ARTICLE TEN

                                   Covenants
<TABLE>
 
     <S>           <C>                                                    <C>
     Section 1001. Payment of Principal, Premium and Interest...........  69
     Section 1002. Maintenance of Office or Agency......................  69
     Section 1003. Money for Securities Payments to Be Held in Trust....  71
     Section 1004. Additional Amounts...................................  72
     Section 1005. Statement by Officers as to Default..................  73
     Section 1006. Existence............................................  73
     Section 1007. Maintenance of Properties............................  73
     Section 1008. Payment of Taxes and Other Claims....................  73
     Section 1009. Ownership of Voting Stock of Significant Banks.......  73
     Section 1010. Waiver of Certain Covenants..........................  74
 </TABLE>
                                 ARTICLE ELEVEN

                            Redemption of Securities
<TABLE>
 
     <S>           <C>                                                    <C>
     Section 1101. Applicability of Article.............................  74
     Section 1102. Election to Redeem; Notice to Trustee................  74
     Section 1103. Selection by Trustee of Securities to Be Redeemed....  75
     Section 1104. Notice of Redemption.................................  75
     Section 1105. Deposit of Redemption Price..........................  76
     Section 1106. Securities Payable on Redemption Date................  77
     Section 1107. Securities Redeemed in Part..........................  78
</TABLE>
                                 ARTICLE TWELVE

                                 Sinking Funds
<TABLE>
 
     <S>           <C>                                                    <C>
     Section 1201. Applicability of Article.............................  78
     Section 1202. Satisfaction of Sinking Fund Payments with Securities  78
     Section 1203. Redemption of Securities for Sinking Fund............  79
</TABLE>
                                ARTICLE THIRTEEN

                       Defeasance and Covenant Defeasance
 
<PAGE>
 
                                       v

<TABLE>

     <S>           <C>                                                    <C>
     Section 1301. Applicability of Article; Company's Option to Effect
                   Defeasance or Covenant Defeasance....................  79
     Section 1302. Defeasance and Discharge.............................  80
     Section 1303. Covenant Defeasance..................................  80
     Section 1304. Conditions to Defeasance or Covenant Defeasance......  81
     Section 1305. Deposited Money and Government Obligations to Be
                   Held in Trust; Other Miscellaneous Provisions........  82
     Section 1306. Reinstatement........................................  83
</TABLE>

                                ARTICLE FOURTEEN

                       Meetings of Holders of Securities
<TABLE>
 
     <S>           <C>                                                    <C>
     Section 1401. Purposes for Which Meetings May Be Called............  84
     Section 1402. Call, Notice and Place of Meetings...................  84
     Section 1403. Persons Entitled to Vote at Meetings.................  84
     Section 1404. Quorum; Action.......................................  85
     Section 1405. Determination of Voting Rights; Conduct and
                   Adjournment of Meetings..............................  86
     Section 1406. Counting Votes and Recording Action of Meetings......  87
</TABLE>
                                ARTICLE FIFTEEN

                       Repayment at the Option of Holders
<TABLE>
 
     <S>                 <C>                                              <C>
     Section 1501. Applicability of Article.............................  87
     Section 1502. Repayment of Securities..............................  87
     Section 1503. Exercise of Option...................................  88
     Section 1504. When Securities Presented for Repayment Become
                   Due and Payable......................................  88
     Section 1505. Securities Repaid in Part............................  89
 
TESTIMONIUM.............................................................  95
SIGNATURES AND SEALS....................................................  95
ACKNOWLEDGMENTS.........................................................  96
FORMS OF CERTIFICATION.............................................EXHIBIT A
</TABLE>
<PAGE>
 
          INDENTURE, dated as of ___________, 1994, between KeyCorp, a
corporation duly organized and existing under the laws of the State of Ohio
(herein called the "Company"), having its principal office at 127 Public Square,
Cleveland, Ohio 44114, and  Bankers Trust Company, a New York banking
corporation duly organized and existing under the laws of the State of New York,
as Trustee (herein called the "Trustee").

                            RECITALS OF THE COMPANY

          The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its unsecured
debentures, notes or other evidences of indebtedness (herein called the
"Securities"), to be issued in one or more series as in this Indenture provided.

          All things necessary to make this Indenture a valid agreement of the
Company, 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, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, 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;

          (2)  all other terms used herein which are defined in the Trust
     Indenture Act, either directly or by reference therein, have the meanings
     assigned to them therein;
<PAGE>
 
                                       2


          (3) all accounting terms not otherwise defined herein have the
     meanings assigned to them in accordance with generally accepted accounting
     principles, and, except as otherwise herein expressly provided, the term
     "generally accepted accounting principles" with respect to any computation
     required or permitted hereunder shall mean such accounting principles as
     are generally accepted at the date of such computation; 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.

          "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 Company 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.

          "Authenticating Agent" means any authenticating agent appointed by the
Trustee pursuant to Section 611.

          "Authorized Newspaper" means a newspaper, 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.  Where successive
publications are required to be made in Authorized Newspapers, the successive
publications may be made in the same or in different newspapers in the same city
meeting the foregoing requirements and in each case on any Business Day.

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


          "Board of Directors" means the board of directors of the Company, the
executive committee or any committee of that board duly authorized to act
hereunder.
<PAGE>
 
                                       3

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

          "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, each Monday, Tuesday, Wednesday, Thursday and Friday which is not a
day on which banking institutions in that Place of Payment or particular
location are authorized or obligated by law or executive order to close.

          "CEDEL" means Centrale 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 Exchange Act, or, if at any time
after the execution of this instrument such Commission is not existing and
performing the duties now assigned to it under the Trust Indenture Act, then the
body performing such duties at such time.

          "Common Depositary" has the meaning specified in Section 304(b).

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

          "Company Request" or "Company Order" means, respectively,  a written
request or order signed in the name of the Company by a Chairman of the Board, a
Vice Chairman of the Board, its President or a Vice President, and by its
Treasurer, an Assistant Treasurer, its Secretary or an Assistant Secretary, and
delivered to the Trustee in accordance with Section 105 hereof.

          "Component Currency" has the meaning specified in Section 312(h).

          "Corporate Trust Office" means the principal office of the Trustee in
New York, New York at which at any particular time its corporate trust business
shall be administered, which office at the date of execution of this Indenture
is located at Four Albany Street, New York, New York 10006, Attn:  Corporate
Trust and Agency Group.

          "corporation" means a corporation, association, company, joint-stock
company or business trust.

          "coupon" means any interest coupon appertaining to a Bearer Security.
<PAGE>
 
                                       4

          "Currency Conversion Date" has the meaning specified in Section
312(d).

          "Currency 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.

          "Currency Election Date" has the meaning specified in Section 312(h).

          "Currency Indexed Note" means any Security with the amount of
principal payments determined by reference to an index currency.

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

          "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.

          "Dollar Equivalent of the Currency Unit" has the meaning specified in
Section 312(g).

          "Dollar Equivalent of the Foreign Currency" has the meaning specified
in Section  312(f).

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

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

          "European Communities" means the European Union, 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 V.

          "Exchange Act" means the Securities Exchange Act of 1934 as it may be
amended and any successor act thereto.
<PAGE>
 
                                       5

          "Exchange Rate Agent", with respect to Securities of or within any
series, means, unless otherwise specified with respect to any Securities
pursuant to Section 301, a New York Clearing House bank designated pursuant to
Section 301 or Section 313.

          "Exchange Rate Officer's Certificate" means a certificate setting
forth (i) the applicable Market Exchange Rate or the applicable bid quotation
and (ii) the Dollar or Foreign Currency amounts of principal (and premium, if
any) and interest, if any (on an aggregate basis and on the basis of a Security
having the lowest denomination principal amount determined in accordance with
Section 302 in the relevant currency or currency unit), payable with respect to
a Security of any series on the basis of such Market Exchange Rate or the
applicable bid quotation signed by the Treasurer, any Vice President or any
Assistant Treasurer of the Company.

          "Extension Notice" has the meaning specified in Section 308.

          "Extension Period" has the meaning specified in Section 308.

          "Final Maturity" has the meaning specified in Section 308.

          "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.

          "Foreign Currency Note" means any Security denominated in one or more
Foreign Currencies.

          "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 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 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 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.
<PAGE>
 
                                       6

          "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 a 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 as to which all or certain 
interest payments and/or the principal amount payable at Maturity are
determined by reference to prices, changes in prices, or differences between
prices, of securities, currency or currencies, currency unit or units or
composite currency or currencies, intangibles, goods, articles or commodities or
by such other objective price, economic or other measures as are specified in
Section 301 hereof.     

          "interest", when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, means interest
payable after Maturity, and, when used with respect to a Security which provides
for the payment of Additional Amounts pursuant to Section 1004, 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.

          "Market Exchange Rate" means, unless otherwise specified with respect
to any Securities pursuant to Section 301, (i) for any conversion involving a
currency unit on the one hand and Dollars or any other Foreign Currency on the
other, the exchange rate between the relevant currency unit and Dollars or such
Foreign Currency calculated by the method specified pursuant to Section 301 for
the Securities of the relevant series, (ii) for any conversion of Dollars into
any Foreign Currency, the noon buying rate for such Foreign Currency for cable
transfers quoted in New York City as certified for customs purposes by the
Federal Reserve Bank of New York and (iii) for any conversion of one Foreign
Currency into Dollars or another Foreign Currency, the spot rate at noon local
time in the relevant market at which, in accordance with normal banking
procedures, the Dollars or Foreign Currency into which conversion is being made
could be purchased with the Foreign Currency from which conversion is being made
from major banks located in either New York City,
<PAGE>
 
                                       7

London or any other principal market for Dollars of such purchased Foreign
Currency, in each case determined by the Exchange Rate Agent.  Unless otherwise
specified with respect to any Securities pursuant to Section 301, in the event
of the unavailability of any of the exchange rates provided for in the foregoing
clauses (i), (ii) and (iii), the Exchange Rate Agent shall use, in its sole
discretion and without liability on its part, such quotation of the Federal
Reserve Bank of New York as of the most recent available date, or quotations
from any or more major banks in New York City, London or other principal market
for such currency or currency unit in question, or such other quotations as the
Exchange Rate Agent shall deem appropriate.  Unless otherwise specified by the
Exchange Rate Agent, if there is more than one market for dealing in any
currency or currency unit by reason of foreign exchange regulations or
otherwise, the market to be used in respect of such currency or currency unit
shall be that upon which a nonresident issuer of securities designated in such
currency or currency unit would purchase such currency or currency unit in order
to make payments in respect of such securities.

          "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.

          "Officers' Certificate" means a certificate signed by the Chairman of
the Board, a Vice Chairman of the Board, the President or a Vice President, and
by the Treasurer, an Assistant Treasurer, the Secretary or an Assistant
Secretary, of the Company, and delivered to the Trustee in accordance with
Section 105 hereof.  One of the officers signing an Officers' Certificate given
pursuant to Section 1005 shall be the principal executive, financial or
accounting officer of the Company.

          "Opinion of Counsel" means a written opinion of counsel, who may be an
employee of the Company or other counsel for the Company, or other counsel
acceptable to the Trustee.

          "Optional Reset Date" has the meaning specified in Section 307(b).

          "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.

          "Original Stated Maturity" has the meaning specified in Section 308.

          "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 cancelled by the Trustee or delivered to
     the Trustee for cancellation;
<PAGE>
 
                                       8

          (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 Company) in trust or set aside and segregated in trust by the Company
     (if the Company shall act as its own Paying Agent) for the Holders of such
     Securities and on 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 1302 and
     1303, with respect to which the Company has effected defeasance and/or
     covenant defeasance as provided in Article Thirteen; and

          (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 Company;
    
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 as of the date such Security is originally
issued by the Company as set forth in an Exchange Rate Officer's Certificate
delivered to the Trustee, of the principal amount (or, in the case of an
Original Issue Discount Security or Indexed Security, the dollar equivalent as
of such date of original issuance of the amount determined as provided in clause
(i) above or (iii) below, respectively 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 Company or any other obligor upon
the Securities or any Affiliate of the Company or of such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in making such calculation or in relying
upon any such request, demand, authorization, direction, notice, consent or
waiver, only Securities which a Responsible Officer of the Trustee knows      
<PAGE>
 
                                       9

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 Company or any other obligor
upon the Securities or any Affiliate of the Company or of such other obligor.

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

          "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, if any, 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
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.

          "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 the any Security to
be repaid at the option of the Holder, the date fixed for such repayment by or
pursuant to this Indenture.
<PAGE>
 
                                       10

          "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.

          "Reset Notice" has the meaning specified in Section 307(b).

          "Responsible Officer", means, when used with respect to the Trustee,
any officer within the Corporate Trust and Agency Group (or any successor group
thereto) of the Trustee, including any Vice President, Assistant Vice President,
Secretary, Assistant Secretary or any other officer of the Trustee customarily
performing functions similar to those performed by any of the above designated
officers and, with respect to a particular matter, any other officer to whom
such matter is referred because of such officer's knowledge of and familiarity
with the particular subject.

          "Security" or "Securities" 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 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 Bank" means any directly or indirectly owned banking
subsidiary of the Company, the consolidated assets of which constitute 10% or
more of the consolidated total assets of the Company.

          "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.

          "Specified Amount" has the meaning specified in Section 312(h).

          "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, as such date may be extended pursuant
to the provisions of Section 308.

          "Subsequent Interest Period" has the meaning specified in Section
307(b).
<PAGE>
 
                                       11

          "Subsidiary" means a corporation more than 50% of the outstanding
voting stock of which is owned, directly or indirectly, by the Company or by one
or more other Subsidiaries, or by the Company and one or more other
Subsidiaries.  For the purposes of this definition and for Section 1009, "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.

          "Temporary/Definitive Exchange Date" has the meaning specified in
Section 304(b).

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

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

          "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.

          "Valuation Date" has the meaning specified in Section 312(c).

          "Vice President", when used with respect to the Company, means any
vice president, whether or not designated by a number or a word or words added
before or after the title "vice president".

          "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.
<PAGE>
 
                                       12

Section 102.  Compliance Certificates and Opinions.
              ------------------------------------ 

          Upon any application or request by the Company to the Trustee to take
any action under any provision of this Indenture, the Company shall furnish to
the Trustee an Officers' Certificate stating that all conditions precedent, if
any, provided for in this Indenture relating to the proposed action have been
complied with and an Opinion of Counsel stating that in the opinion of such
counsel all such conditions precedent, if any, have been complied with, except
that in the case of any such application or request as to which the furnishing
of such documents is specifically required by any provision of this Indenture
relating to such particular application or request, no additional certificate or
opinion need be furnished.

          Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include:

          (1)  a statement that each individual signing such certificate or
     opinion has read such 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 such covenant or condition has
     been complied with; and

          (4)  a statement as to whether, in the opinion of each such
     individual, such condition or covenant has been complied with.

Section 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 with respect
     to some matters and one or more other such Persons as to other matters, and
     any such Person may certify or give an opinion as to such matters in one or
     several documents.

               Any certificate or opinion of an officer of the Company may be
     based, insofar as it relates to legal matters, upon 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 certificate or
     opinion or representations with respect to the matters upon which his
     certificate or opinion is based are erroneous.  Any such Opinion of Counsel
     or certificates or
<PAGE>
 
                                       13

     representations of counsel may be based, insofar as they relate to factual
     matters, upon a certificate or opinion of, or representations by, an
     officer or officers of the Company stating that the information as to such
     factual matters is in the possession of the Company, unless such counsel
     knows, or in the exercise of reasonable care should know, that the
     certificate or opinion or representations with respect 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.

     Section 104.  Acts of Holders; Record Dates.
                   ----------------------------- 

               (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 an agent or 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 Fourteen, or a combination of such instruments and
     any such record.  Except as herein otherwise expressly provided, such
     action shall become effective when such instrument or instruments or record
     or both are delivered to the Trustee and, where it is hereby expressly
     required, to the Company.  Such instrument or instruments and any such
     record (and the action embodied therein and evidenced thereby) are herein
     sometimes referred to as the "Act" of the Holders signing such instrument
     or instruments 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 and conclusive in favor of the Trustee and the Company, if
     made in the manner provided in this Section.  The record of any meeting of
     Holders of Securities shall be proved in the manner provided in Section
     1406.

               Without limiting the generality of the foregoing, a Holder,
     including a Depositary that is a Holder of a Global Security, may make,
     give or take, by a proxy, or proxies, duly appointed in writing, any
     request, demand, authorization, direction, notice, consent, waiver or other
     action provided in this Indenture to be made, given or taken by Holders,
     and a Depositary that is a Holder of a Global Security may provide its
     proxy or proxies to the beneficial owners of interest in any such Global
     Security.

               (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
<PAGE>
 
                                       14

     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 manner which the Trustee deems sufficient.

               (c)  The ownership of 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 Company may assume that such ownership of any Bearer Security continues
     until (1) another certificate or affidavit bearing a later date issued in
     respect of the same Bearer Security is produced, or (2) such Bearer
     Security is produced to the Trustee by some other Person, or (3) such
     Bearer Security is surrendered in exchange for a Registered Security, or
     (4) such Bearer Security is no longer outstanding.  The ownership of Bearer
     Securities may also be proved in any other manner that the Trustee deems
     sufficient.

               (e)  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 Company in reliance thereon, whether or not
     notation of such action is made upon such Security.

     Section 105.  Notices, Etc. to Trustee and Company.
                   ------------------------------------ 

               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 Company shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if made, given, furnished or filed in writing to or
         with the Trustee at its Corporate Trust Office, Attention: Corporate
         Trust and Agency Group, or
             
              (2)  the Company by the Trustee or by any Holder shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if made, given, furnished or filed in writing      

<PAGE>
 
                                       15
             
         to or with the Company, by first class mail, facsimile or overnight 
         courier, at the address of its principal office specified in the 
         first paragraph of this instrument or, at any other address previously
         furnished in writing to the Trustee by the Company.      
         
     Section 106.  Notice to Holders; Waiver.
                   ------------------------- 

               Where this Indenture provides for notice of any event to Holders
     of Registered Securities by the Company 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 The City of New York 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 Holders 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 Bearer
     Securities or the sufficiency of any notice to Holders of Registered
     Securities given as provided herein.
<PAGE>
 
                                       16

               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 Company
     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 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 laws of the State of New York.
     This Indenture is subject to the provisions of the Trust Indenture Act that
     are required to be part of this Indenture and shall, to the extent
     applicable, be governed by such provisions.
<PAGE>
 
                                       17

     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 of this
     Section), payment of principal (or premium, if any) or interest, if any,
     need not be made at such Place of Payment on such date, but may be made on
     the next succeeding Business Day at such Place of Payment with the same
     force and effect as if made on the Interest Payment Date, Redemption Date,
     Repayment Date or 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.  Obligations of the Company Not Obligations of the Trustee.
                   --------------------------------------------------------- 

               Not withstanding anything contained in this Indenture to the
     contrary, in no event shall Bankers Trust Company have any liability for
     the representations, warranties, covenants, agreements or other obligations
     of the Company hereunder or in any of the certificates, notices or
     agreements of the Company delivered pursuant hereto, as to all of which
     recourse shall be had solely to the assets of the Company, and under no
     circumstances shall Bankers Trust Company be personally liable for the
     payment of any indebtedness or expenses of the Company; provided, however,
     that nothing in this Section 113 shall affect the obligations of the
     Company to the Trustee as set forth in Section 606, subject to the
     exceptions thereto and limitations thereon.


                                  ARTICLE TWO

                                 Security Forms

Section 201.  Forms Generally.
              --------------- 

               The Registered Securities, if any, of such 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 Company
     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
<PAGE>
 
                                       18

     which the Securities may be listed, or to conform to usage.  If the form of
     Securities of any series is established by action taken pursuant to a Board
     Resolution, a copy of an appropriate record of such action shall be
     certified by the Secretary or an Assistant Secretary of the Company and
     delivered to the Trustee at or prior to the delivery of the Company Order
     contemplated by Section 303 for the authentication and delivery of such
     Securities.

               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.

     Section 202.  Form of Trustee's Certificate of Authentication.
                   ----------------------------------------------- 

               Subject to Section 611, the Trustee's certificates 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.

                                BANKERS TRUST COMPANY, as Trustee


                                By___________________________________
                                     Authorized Officer


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 Company 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
<PAGE>
 
                                       19

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 Company Order.  If a Company Order pursuant to Section 303 or 304 has
been, or simultaneously is, delivered, any instructions by the Company 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 additional 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 Company and the Company 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 premium,
if any) and interest, if any, on any Security in permanent global form shall be
made to the Person or Persons specified therein.

          Notwithstanding the provisions of Section 309 and except as provided
in the preceding paragraph, the Company, the Trustee and any agent of the
Company 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,
<PAGE>
 
                                       20

may be determined from time to time by the Company 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 1505;

          (3)  the date or dates, or the method by which such date or dates will
     be determined or extended, 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 calculation agent, if any, 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 such interest
     shall be calculated if other than that of a 360-day year of twelve 30-day
     months;      

          (5)  the place or places, if any, other than or in addition to the
     Borough of Manhattan, The City of New York, where the principal of (and
     premium, if any) and interest, if any, on Securities of the series shall be
     payable, where any Registered Securities of the series may be surrendered
     for registration of transfer, where Securities of that series that are
     convertible or exchangeable may be surrendered for conversion or exchange,
     as applicable, and where notices or demands to or upon the Company 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 on in part, at the option of the
     Company, if the Company is to have the option;

          (7)  the obligation, if any, of the Company to redeem, repay or
     purchase Securities of the series pursuant to any sinking fund or analogous
     provisions or at the option of a Holder thereof, and the period or periods
     within which 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
<PAGE>
 
                                       21

     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 denomination or denominations in which any Registered
     Securities of the series shall be issuable and, if other than denominations
     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 the method by which such portion shall be determined;

          (11)  if other than Dollars, the currency or currencies, currency unit
     or units or composite currency or currencies in which payment of the
     principal of (and premium, if any) or interest, if any, on the Securities
     of the series shall be payable or in which the Securities of the series
     shall be denominated and the particular provisions applicable thereto in
     accordance with, in addition to or in lieu of any of the provisions of
     Section 312, including the manner of determining the equivalent thereof in
     the currency of the United States of America for purposes of the definition
     of "Outstanding" in Section 101;
         
          (12)  whether the amount of payments of principal of (or premium, if
     any) and/or interest, if any, on the Securities of the series may be
     determined with reference to an index, formula or other method and the
     manner in which such amounts shall be determined;      

          (13)  whether the principal of (or premium, if any) or interest, if
     any, on the Securities of the series are to be payable, at the election of
     the Company 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 (including the Currency Election Date), and the terms and
     conditions upon which, such election may be made, and the time and manner
     of 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, in each case in accordance
     with, in addition to or in lieu of any of the provisions of Section 312;
<PAGE>
 
                                       22

          (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 (including any deletions from, modifications of or
     additions to any of the provisions of Section 1010) of the Company 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 depository 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 the 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 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 1302 and/or 1303 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 Thirteen;

          (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)
<PAGE>
 
                                       23

     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)  if the Securities of the series are to be issued upon the
     exercise of warrants or upon the conversion or exchange of other
     securities, the time, manner and place for such Securities to be
     authenticated and delivered;

          (22)  whether, under what circumstances and the currency or
     currencies, currency unit or units or composite currency or currencies in
     which, the Company will pay Additional Amounts as contemplated by Section
     1004 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 Company will have the option to redeem such Securities rather
     than pay such Additional Amounts (and the terms of any such option);

          (23)  the designation of the initial Exchange Rate Agent, if any;

          (24)  if the Securities of the series are to be convertible into or
     exchangeable for any securities of any Person (including the Company), the
     terms and conditions upon which such Securities will be so convertible or
     exchangeable; and

          (25)  any other terms of the series (which terms shall not be
     inconsistent with the provisions of this Indenture or the requirement of
     the Trust Indenture Act).

          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 Officers' 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 a 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 Company and delivered to the Trustee at or prior to the
delivery of the Officers' Certificate setting forth the terms of the Securities
of such series.

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
<PAGE>
 
                                       24

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 Company by its Chairman of the Board, or one of its Vice
Chairman of the Board, its President or one of its Vice Presidents, under its
corporate seal reproduced thereon, and attested by its Secretary or one of its
Assistant Secretaries.  The signature of any of these officers 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 and coupons.

          Securities or coupons bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company shall bind
the Company, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such 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 Company may deliver Securities of any series together with
any coupon appertaining thereto, executed by the Company to the Trustee for
authentication, together with a Company Order for the authentication and
delivery of such Securities, and the Trustee upon receipt of and in accordance
with the Company 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 in the form set forth in
Exhibit A-1 to this Indenture, 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 cancelled.
If not all the Securities of any series are to be issued at one time and if the
Board Resolution or supplemental indenture establishing such series shall so
permit, such Company Order may set forth procedures
<PAGE>
 
                                       25

acceptable to the Trustee for the issuance of such Securities and determining
terms of particular Securities of such series, such as interest rate, 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 Sections 315(a) through 315(d)) shall
be fully protected in relying upon,

          (i)    an Opinion of Counsel stating,

               (a)  that the form or forms of such Securities and any coupons
          have been established in conformity with the provisions of this
          Indenture;
              
               (b)  that the terms of such Securities and any coupons have been
          established in conformity with the provisions of this Indenture; and 
               
          
               (c)  that such Securities, together with any coupons appertaining
          thereto, when completed by appropriate insertions and executed and
          delivered by the Company 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 Company in
          the manner and subject to any conditions specified in such Opinion of
          Counsel, will constitute the legal, valid and binding obligations of
          the Company, 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, to general equitable principles and to such
          other qualifications as such counsel shall conclude do not materially
          affect the rights of Holders of such Securities and any coupons; and

          (ii)  an Officers' Certificate stating, to the best of the knowledge
     of the signers of such certificate, that no Event of Default with respect
     to any of the Securities shall have occurred and be continuing.

          Notwithstanding the provisions of Section 301 and of the preceding two
paragraphs, if not all the Securities of any series are to be issued at one
time, it shall not be necessary to deliver the Officers' Certificate otherwise
required pursuant to Section 301 or the Company Order and Opinion of Counsel
otherwise required pursuant to the preceding two paragraphs prior to or at the
time of issuance of each Security, but such documents shall be delivered prior
to or at the time of issuance of the first Security of such series.

          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 generality of the foregoing, the Trustee will not be
<PAGE>
 
                                       26

required to authenticate Securities denominated in a Foreign Currency if the
Trustee reasonably believes that it would be unable to perform its duties with
respect to such Securities.

          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 a Responsible Officer, 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 Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 310 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
Company, 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 Company may execute, and upon Company 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 coupon 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 the provisions of the following paragraphs), if
temporary Securities of any series are issued, the Company 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 Company 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 unmatured coupons appertaining thereto), the Company
shall execute and the Trustee shall authenticate and deliver in exchange
therefor a like principal
<PAGE>
 
                                       27

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
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.  If temporary Securities or any series are issued in global form,
any 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 "Temporary/Definitive Exchange Date"), the Company shall deliver
to the Trustee definitive Securities, in aggregate principal amount equal to the
principal amount of such temporary global Security, executed by the Company.  On
or after the Temporary/Definitive Exchange Date, such temporary global Security
shall be surrendered by the Common Depositary to the Trustee, as the Company'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
Temporary/Definitive 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 Temporary/Definitive 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
<PAGE>
 
                                       28

for definitive Securities of the same series and of like tenor following the
Temporary/Definitive 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
Temporary/Definitive Exchange Date, copies of which 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 Temporary/Definitive 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 form 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 the Persons who are the
beneficial owners of such temporary global Security on such Interest Payment
Date and who have each delivered to Euroclear or CEDEL, as the case may be, a
certificate dated no earlier than 15 days prior to the Interest Payment Date
occurring prior to such Temporary/Definitive Exchange Date 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).  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 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 Temporary/Definitive
Exchange Date or the date of certification if such date occurs after the
Temporary/Definitive Exchange Date, without further act or deed by such
beneficial owners.  Except as otherwise provided in this paragraph, no payments
of principal (or premium, if any) 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
immediately prior to the expiration of two years after such Interest Payment
Date in order to be repaid to the Company.
<PAGE>
 
                                       29

Section 305.  Registration, Registration of Transfer and Exchange.
              --------------------------------------------------- 

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

          Upon surrender for registration of transfer of any Registered Security
of any series at the office or agency in a Place of Payment for that series, the
Company shall execute, and the Trustee shall authenticate and deliver, in the
name of the designated transferee, 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.

          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 and of a like aggregate principal amount, upon surrender
of the Registered Securities to be exchanged at such office or agency.  Whenever
any Registered Securities are so surrendered for exchange, the Company 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) expressly permitted in or pursuant to 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 denomination 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 Company in an amount equal to the face amount
of such missing coupon or coupons, or the surrender of such missing coupon or
coupons may be waived by the Company and the Trustee if there is furnished to
them such security or indemnity as they may require to save each of them and
<PAGE>
 
                                       30

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 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 Company
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 any beneficial owner of an interest in a
permanent global Security is 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 Company shall
deliver to the Trustee definitive Securities in aggregate principal amount equal
to the principal amount of such beneficial owner's interest in such permanent
global Security, executed by the Company.  On or after the earliest date on
which such interests may be so exchanged, such permanent global Security shall
be surrendered by the Common Depositary or such other depositary as shall be
specified in the Company Order with respect thereto to the Trustee, as the
Company'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 permanent 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
permanent global Security to be exchanged which, unless the Securities of the
series are not issuable both as Bearer Securities and as Registered Securities,
as specified as contemplated by Section 301, shall be in the form of Bearer
Securities or Registered Securities, or any combination thereof, as shall be
specified by the beneficial owner thereof; provided, however, that no such
exchanges may occur during a period beginning at the
<PAGE>
 
                                       31

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 Company, 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 Company or
the Security Registrar) be duly endorsed, or be accompanied by a written
instrument of transfer in form satisfactory to the Company 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 or redemption of Securities, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection with any registration of transfer or exchange of Securities, other
than exchanges pursuant to Section 304, 906, 1107 or 1305 not involving any
transfer.

          The Company 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
the day of the selection for redemption of Securities of that series under
Section 1103 or 1203 and ending at the close of business on (A) if Securities of
the series are issuable only as Registered Securities, the day of the mailing of
the relevant notice of redemption and (B) if Securities of the series are
issuable as Bearer Securities, the day of the first publication of the relevant
notice of redemption or, if Securities of the series are also issuable as
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 the
unredeemed portion of any Security being redeemed in part, or (iii) to
<PAGE>
 
                                       32

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, the Company shall execute and
the Trustee shall authenticate and deliver in exchange therefor a new Security
of the same series and of like tenor and principal amount 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 Company 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 Company or the Trustee that such Security or coupon has been
acquired by a bona fide purchaser, the Company 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 Company in its discretion may, instead
of issuing a new Security, with coupons corresponding to the coupons, if any,
appertaining to such mutilated, destroyed, lost or stolen Security or to the
Security to which such mutilated, destroyed, lost or stolen coupons appertains,
pay such Security or coupon; provided, however, that payment of principal of
(and premium, if any) and interest, if any, on 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.

          Upon the issuance of any new Security under this Section, the Company
may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.
<PAGE>
 
                                       33

          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 Company,
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; Optional Interest
             -----------------------------------------------------------------
             Reset.
             ----- 

          (a)   Except as otherwise provided as contemplated by Section 301 with
respect to any series of Securities, interest on any Registered Security which
is payable, and is punctually paid or duly provided for, on any Interest Payment
Date shall be paid to the Person in whose name such 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 Company maintained
for such purpose pursuant to Section 1002; provided, however, that each
installment of interest on any Registered Security may at the Company'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 309, to the address of
such Person as it appears on the Security Register or (ii) transfer to an
account maintained by the payee located in 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 each of Euroclear and CEDEL with respect
to that portion of such permanent global Security held for its account by the
Common Depositary, for the purpose of permitting each of Euroclear and CEDEL 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 agency) on the next succeeding
Interest Payment Date, such Bearer Security shall be surrendered without the
coupon relating to such Interest Payment
<PAGE>
 
                                       34

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 thereto on the
relevant Regular Record Date by virtue of having been such Holder, and such
Defaulted Interest may be paid by the Company, at its election in each case, as
provided in clause (1) or (2) below:

          (1)  The Company may elect to make payment of any Defaulted Interest
     to the Persons in whose names the Registered Securities of such series (or
     their respective Predecessor Securities) are registered at the close of
     business on a Special Record Date for the payment of such Defaulted
     Interest, which shall be fixed in the following manner.  The Company shall
     notify the Trustee in writing of the amount of Defaulted Interest proposed
     to be paid on each Registered Security of such series and the date of the
     proposed payment (which shall not be less than 20 days after such notice is
     received by the Trustee), and at the same time the Company 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 and except, if applicable, as
     provided in Sections 312(b), 312(d) and 312(e)) equal to the aggregate
     amount proposed to be paid in respect of such Defaulted Interest or shall
     make arrangements satisfactory to the Trustee for such deposit prior to the
     date of the proposed payment, such money 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
     Company of such Special Record Date and, in the name and at the expense of
     the Company, shall cause notice of the proposed payment of such Defaulted
     Interest and the Special Record Date therefor to be mailed, first-class
     postage prepaid, to each Holder of Registered Securities of such series at
     his address as it appears in the Security Register, not less than 10 days
     prior to such Special Record Date.  Notice of the proposed payment of such
     Defaulted Interest and the Special Record Date therefor having been so
     mailed, such Defaulted Interest shall be paid to the Persons in whose names
     the Registered Securities of such series (or their respective Predecessor
     Securities) are registered at the close of business on such Special Record
     Date and shall no longer be payable pursuant to the following clause (2).
     In case a Bearer Security of any series is surrendered at the office or
     agency in a Place of Payment for such series in exchange for a Registered
     Security of such series
<PAGE>
 
                                       35

     after the close of business at such office or agency on any Special Record
     Date and before the opening of business at such office or agency on the
     related proposed date for payment of Defaulted Interest, such Bearer
     Security shall be surrendered without the coupon relating to such proposed
     date of payment and Defaulted Interest will not be payable on such proposed
     date of payment in respect of the Registered Security  issued in exchange
     for such Bearer Security, but will be payable only to the Holder of such
     coupon when due in accordance with the provisions of this Indenture.

          (2)  The Company may make payment of any Defaulted Interest on the
     Registered Securities of any series in any other lawful manner not
     inconsistent with the requirements of any securities exchange on which such
     Securities may be listed, and upon such notice as may be required by such
     exchange, if, after notice given by the Company to the Trustee of the
     proposed payment pursuant to this clause, such manner of payment shall be
     deemed acceptable to the Trustee.

          (b)  The provisions of this Section 307(b) may be made applicable to
any series of Securities pursuant to Section 301 (with such modifications,
additions or substitutions as may be specified pursuant to such Section 301).
The interest rate (or the spread or spread multiplier used to calculate such
interest rate, if applicable) on any Security of such series may be reset by the
Company on the date or dates specified on the face of such Security (each an
"Optional Reset Date").  The Company may exercise such option with respect to
such Security by notifying the Trustee of such exercise at least 50 but not more
than 60 days prior to an Optional Reset Date for such Note.  Not later than 40
days prior to each Optional Reset Date, the Trustee shall transmit, in the
manner provided for in Section 106, to the Holder of any such Security a notice
(the "Reset Notice") indicating whether the Company has elected to reset the
interest rate (or the spread or spread multiplier used to calculate such
interest rate, if applicable), and if so (i) such new interest rate (or such new
spread or spread multiplier, if applicable) and (ii) the provisions, if any, for
redemption during the period from such Optional Reset Date to the next Optional
Reset Date or if there is no such next Optional Reset Date, to the Stated
Maturity Date of such Security (each such period a "Subsequent Interest
Period"), including the date or dates on which or the period or periods during
which and the price or prices at which such redemption may occur during the
Subsequent Interest Period.

          Notwithstanding the foregoing, not later than 20 days prior to the
Optional Reset Date, the Company may, at its option, revoke the interest rate
(or the spread or spread multiplier used to calculate such interest rate, if
applicable) provided for in the Reset Notice and establish an interest rate (or
a spread or spread multiplier used to calculate such interest rate, if
applicable) that is higher than the interest rate (or the spread or spread
multiplier, if applicable) provided for in the Reset Notice, for the Subsequent
Interest Period by causing the Trustee to transmit, in the manner provided for
in Section 106, notice of such higher interest rate (or such higher spread or
spread multiplier, if applicable) to the Holder of such Security.  Such notice
shall be irrevocable.  All Securities with respect to which the interest rate
(or the spread or spread multiplier used to calculate such interest rate, if
applicable) is
<PAGE>
 
                                       36

reset on an Optional Reset Date, and with respect to which the Holders of such
Securities have not tendered such Securities for repayment (or have validly
revoked any such tender) pursuant to the next succeeding paragraph, will bear
such higher interest rate (or such higher spread or spread multiplier, if
applicable).

          The Holder of any such Security will have the option to elect
repayment by the Company of the principal of such Security on each Optional
Reset Date at a price equal to the principal amount thereof plus interest
accrued to such Optional Reset Date.  In order to obtain repayment on an
Optional Reset Date, the Holder must follow the procedures set forth in Article
Thirteen for repayment at the option of Holders except that the period for
delivery or notification to the Trustee shall be at least 25 but not more than
35 days prior to such Optional Reset Date and except that, if the Holder has
tendered any Security for repayment pursuant to the Reset Notice, the Holder
may, by written notice to the Trustee, revoke such tender or repayment until the
close of business on the tenth day before such Optional Reset Date.

          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.  Optional Extension of Maturity.
              ------------------------------ 

          The provisions of this Section 308 may be made applicable to any
series of Securities pursuant to Section 301 (with such modifications, additions
or substitutions as may be specified pursuant to such Section 301).  The Stated
Maturity of any Security of such series may be extended at the option of the
Company for the period or periods specified on the face of such Security (each
an "Extension Period") up to but not beyond the date (the "Final Maturity") set
forth on the face of such Security.  The Company may exercise such option with
respect to any Security by notifying the Trustee of such exercise at least 50
but not more than 60 days prior to the Stated Maturity of such Security in
effect prior to the exercise of such option (the "Original Stated Maturity").
If the Company exercises such option, the Trustee shall transmit, in the manner
provided for in Section 106, to the Holder of such Security not later than 40
days prior to the Original Stated Maturity a notice (the "Extension Notice")
indicating (i) the election of the Company to extend the Stated Maturity, (ii)
the new Stated Maturity, (iii) the interest rate, if any, applicable to the
Extension Period and (iv) the provisions, if any, for redemption during such
Extension Period.  Upon the Trustee's transmittal of the Extension Notice, the
Stated Maturity of such Security shall be extended automatically and, except as
modified by the Extension Notice and as described in the next paragraph, such
Security will have the same terms as prior to the transmittal of such Extension
Notice.

          Notwithstanding the foregoing, not later than 20 days before the
Original Stated Maturity of such Security, the Company may, at its option,
revoke the interest rate
<PAGE>
 
                                       37

provided for in the Extension Notice and establish a higher interest rate for
the Extension Period by causing the Trustee to transmit, in the manner provided
for in Section 106, notice of such higher interest rate to the Holder of such
Security.  Such notice shall be irrevocable.  All Securities with respect to
which the Stated Maturity is extended will bear such higher interest rate.

          If the Company extends the Maturity of any Security, the Holder will
have the option to elect repayment of such Security by the Company on the
Original Stated Maturity at a price equal to the principal amount thereof, plus
interest accrued to such date.  In order to obtain repayment on the Original
Stated Maturity once the Company has extended the Maturity thereof, the Holder
must follow the procedures set forth in Article Fifteen for repayment at the
option of Holders, except that the period for delivery or notification to the
Trustee shall be at least 25 but not more than 35 days prior to the Original
Stated Maturity and except that, if the Holder has tendered any Security for
repayment pursuant to an Extension Notice, the Holder may by written notice to
the Trustee revoke such tender for repayment until the close of business on the
tenth day before the Original Stated Maturity.

Section 309.  Persons Deemed Owners.
              --------------------- 

          Prior to due presentment of a Registered Security for registration of
transfer, the Company, the Trustee and any agent of the Company or 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, if any, on such
Registered Security and for all other purposes whatsoever, whether or not such
Registered Security be overdue, and neither the Company, the Trustee nor any
agent of the Company or the Trustee shall be affected by notice to the contrary.

          Title to any Bearer Security and any coupons appertaining thereto
shall pass by delivery.  The Company, the Trustee and any agent of the Company
or the Trustee may treat the bearer of any Bearer Security and the bearer of any
coupon as the absolute owner of such 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 coupons be overdue, and neither the
Company, the Trustee nor any agent of the Company or the Trustee shall be
affected by notice to the contrary.

          None of the Company, the Trustee, any Paying Agent or the Security
Registrar will have any responsibility or liability for any aspect of the
records relating to or payments made on account of beneficial ownership
interests of a Security in global form or for maintaining, supervising or
reviewing any records relating to such beneficial ownership interests.

          Notwithstanding the foregoing, with respect to any global Security,
nothing herein shall prevent the Company, the Trustee, or any agent of the
Company or the Trustee,
<PAGE>
 
                                       38

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 310.  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 cancelled by it.  The Company may at any time
deliver to the Trustee for cancellation any Securities previously authenticated
and delivered hereunder which the Company 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 Company has not issued and sold, and all Securities so
delivered shall be promptly cancelled by the Trustee.  If the Company 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
cancelled as provided in this Section, except as expressly permitted by this
Indenture.  Cancelled Securities and coupons held by the Trustee shall be
destroyed by the Trustee in its customary manner and the Trustee shall deliver a
certificate of such destruction to the Company, unless by a Company Order the
Company directs their return to it within 30 days after such Securities have
been delivered to the Trustee for such purpose.  The Trustee shall not be
required to hold cancelled Securities for more than one year.

Section 311.  Computation of Interest.
              ----------------------- 

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

Section 312. Currency and Manner of Payments in Respect of Securities.
             -------------------------------------------------------- 

          (a)  Unless otherwise specified with respect to any Securities
pursuant to Section 301, with respect to Registered Securities of any series not
permitting the election provided for in paragraph (b) below or the Holders of
which have not made the election provided for in paragraph (b) below, and with
respect to Bearer Securities of any series, except as provided in paragraph (d)
below, payment of the principal of (and premium, if any, on) and interest, if
any, on any Registered or Bearer Security of such series will be made in the
currency or currencies in which such Registered Security or Bearer Security, as
the case may be, is
<PAGE>
 
                                       39

payable.  The provisions of this Section 312 may be modified or superseded with
respect to any Securities pursuant to Section 301.

          (b)  It may be provided pursuant to Section 301 with respect to
Registered Securities of any series that Holders shall have the option, subject
to paragraphs (d) and (e) below, to receive payments of principal of (and
premium, if any, on) or interest, if any, on such Registered Securities in any
of the currencies, currency units or composite currencies which may be
designated for such election by delivering to the Trustee for such series of
Registered Securities a written election with signature guarantees and in the
applicable form established pursuant to Section 301, not later than the close of
business on the Currency Election Date immediately preceding the applicable
payment date.  If a Holder so elects to receive such payments in any such
currency, currency unit or composite currency, such election will remain in
effect for such Holder or any transferee of such Holder until changed by such
Holder or such transferee by written notice to the Trustee for such series of
Registered Securities (but any such change must be made not later than the close
of business on the Currency Election Date immediately preceding the next payment
date to be effective for the payment to be made on such payment date and no such
change of election may be made with respect to payments to be made on any
Registered Security of such series with respect to which an Event of Default has
occurred or with respect to which the Company has deposited funds pursuant to
Article Four or Fourteen or with respect to which a notice of redemption has
been given by the Company or a notice of option to elect repayment has been sent
by such Holder or such transferee).  Any Holder of any such Registered Security
who shall not have delivered any such election to the Trustee of such series of
Registered Securities not later than the close of business on the applicable
Currency Election Date will be paid the amount due on the applicable payment
date in the relevant currency or currencies as provided in Section 312(a).  The
Trustee for each such series of Registered Securities shall notify the Exchange
Rate Agent as soon as practicable after the Currency Election Date of the
aggregate principal amount of Registered Securities for which Holders have made
such written election.

          (c)  Unless otherwise specified pursuant to Section 301, if the
election referred to in paragraph (b) above has been provided for pursuant to
Section 301, then, unless otherwise specified pursuant to Section 301, not later
than the fourth Business Day after the Currency Election Date for each payment
date for Registered Securities of any series, the Exchange Rate Agent will
deliver to the Company a written notice specifying, in the currency or
currencies, currency unit or units or composite currency or currencies in which
Registered Securities of such series are payable, the respective aggregate
amounts of principal of (and premium, if any, on) and interest, if any, on the
Registered Securities to be paid on such payment date, specifying the amounts in
such currency or currencies, currency unit or units or composite currency or
currencies so payable in respect of the Registered Securities as to which the
Holders of Registered Securities denominated in any currency or currencies,
currency unit or units or composite currency or currencies shall have elected to
be paid in another currency, currency unit or composite currency as provided in
paragraph (b) above.  If the election referred to in paragraph (b) above has
been provided for pursuant to Section 301 and if at least one Holder has made
such election, then, unless otherwise specified pursuant to Section 301, on the
second
<PAGE>
 
                                       40
    
Business Day preceding such payment date the Company will deliver to the Trustee
for such series of Registered Securities an Exchange Rate Officer's Certificate
in respect of the Dollar or Foreign Currency payments to be made on such payment
date.  Unless otherwise specified pursuant to Section 301, the Dollar, Foreign
Currency or currencies, ECU or currency unit amount receivable by Holders of
Registered Securities who have elected payment in a currency or currency unit as
provided in paragraph (b) above shall be determined by the Company on the basis
of the applicable Market Exchange Rate in effect on the second Business Day (the
"Valuation Date") immediately preceding each payment date, and such
determination shall be conclusive and binding for all purposes, absent manifest
error.      

          (d)  If a Currency Conversion Event occurs with respect to a Foreign
Currency, the ECU or any other currency unit in which any of the Securities are
denominated or payable other than pursuant to an election provided for pursuant
to paragraph (b) above, then with respect to each date for the payment of
principal of (and premium, if any, on) and interest, if any, on the applicable
Securities denominated or payable in such Foreign Currency, the ECU or such
other currency unit occurring after the last date on which such Foreign
Currency, the ECU or such other currency unit was used (the "Currency Conversion
Date"), the Dollar shall be the Currency of payment for use on each such payment
date.  Unless otherwise specified pursuant to Section 301, the Dollar amount to
be paid by the Company to the Trustee of each series of Securities and by the
Trustee or any Paying Agent to the Holders of such Securities with respect to
such payment date shall be, in the case of a Foreign Currency other than a
currency unit, the Dollar Equivalent of the Foreign Currency or, in the case of
a currency unit, the Dollar Equivalent of the Currency Unit, in each case as
determined by the Exchange Rate Agent in the manner provided in paragraph (f) or
(g) below.

          (e)  Unless otherwise specified pursuant to Section 301, if the Holder
of a Registered Security denominated in any currency or currencies, currency
unit or units or composite currency or currencies shall have elected to be paid
in another currency or currencies, currency unit or units or composite currency
or currencies as provided in paragraph (b) above, and a Currency Conversion
Event occurs with respect to such elected currency or currencies, currency unit
or units or composite currency or currencies, such Holder shall receive payment
in the currency or currencies, currency unit or units or composite currency or
currencies in which payment would have been made in the absence of such
election; and if a Currency Conversion Event occurs with respect to the currency
or currencies, currency unit or units or composite currency or currencies in
which payment would have been made in the absence of such election, such Holder
shall receive payment in Dollars as provided in paragraph (d) above.

          (f)  The "Dollar Equivalent of the Foreign Currency" shall be
determined by the Exchange Rate Agent and shall be obtained for each subsequent
payment date by converting the specified Foreign Currency into Dollars at the
Market Exchange Rate on the Currency Conversion Date.

          (g)  The "Dollar Equivalent of the Currency Unit" shall be determined
by the Exchange Rate Agent and subject to the provisions of paragraph (h) below
shall be the sum of
<PAGE>
 
                                       41

each amount obtained by converting the Specified Amount of each Component
Currency into Dollars at the Market Exchange Rate for such Component Currency on
the Valuation Date with respect to each payment.

          (h)  For purposes of this Section 312, the following terms shall have
the following meanings:

          A "Component Currency" shall mean any Currency which, on the Currency
     Conversion Date, was a component currency of the relevant currency unit,
     including, but not limited to, the ECU.

          A "Specified Amount" of a Component Currency shall mean the number of
     units of such Component Currency or fractions thereof which were
     represented in the relevant currency unit, including, but not limited to,
     the ECU, on the Currency Conversion Date.  If after the Currency Conversion
     Date the official unit of any Component Currency is altered by way of
     combination or subdivision, the Specified Amount of such Component Currency
     shall be divided or multiplied in the same proportion.  If after the
     Currency Conversion Date two or more Component Currencies are consolidated
     into a single currency, the respective Specified Amounts of such Component
     Currencies shall be replaced by an amount in such single currency equal to
     the sum of the respective Specified Amounts of such consolidated Component
     Currencies expressed in such single currency, and such amount shall
     thereafter be a Specified Amount and such single currency shall thereafter
     be a Component Currency.  If after the Currency Conversion Date any
     Component Currency shall be divided into two or more currencies, the
     Specified Amount of such Component Currency shall be replaced by amounts of
     such two or more currencies, having an aggregate Dollar Equivalent value at
     the Market Exchange Rate on the date of such replacement equal to the
     Dollar Equivalent value of the Specified Amount of such former Component
     Currency at the Market Exchange Rate immediately before such division, and
     such amounts shall thereafter be Specified Amounts and such currencies
     shall thereafter be Component Currencies.  If, after the Currency
     Conversion Date of the relevant currency unit, including, but not limited
     to, the ECU, a Currency Conversion Event (other than any event referred to
     above in this definition of "Specified Amount") occurs with respect to any
     Component Currency of such currency unit and is continuing on the
     applicable Valuation Date, the Specified Amount of such Component Currency
     shall, for purposes of calculating the Dollar Equivalent of the Currency
     Unit, be converted into Dollars at the Market Exchange Rate in effect on
     the Currency Conversion Date of such Component Currency.

          "Currency Election Date" shall mean the date for any series of
     Registered Securities as specified pursuant to clause (13) of Section 301
     by which the written election referred to in paragraph (b) above may be
     made.

          All decisions and determinations of the Exchange Rate Agent regarding
the Dollar Equivalent of the Foreign Currency, the Dollar Equivalent of the
Currency Unit, the Market
<PAGE>
 
                                       42

Exchange Rate and changes in the Specified Amounts as specified above shall be
in its sole discretion and shall, in the absence of manifest error, be
conclusive for all purposes and irrevocably binding upon the Company, the
Trustee and all Holders of such Securities denominated or payable in the
relevant currency.  The Exchange Rate Agent shall promptly give written notice
to the Company and the Trustee of any such decision or determination.

          In the event that the Company determines in good faith that a Currency
Conversion Event has occurred with respect to a Foreign Currency, the Company
will immediately give written notice thereof to the Trustee and to the Exchange
Rate Agent (and upon receipt thereof the Trustee will promptly thereafter give
notice in the manner provided for in Section 106 to the affected Holders)
specifying the Currency Conversion Date.  In the event the Company so determines
that a Currency Conversion Event has occurred with respect to the ECU or any
other currency unit in which Securities are denominated or payable, the Company
will immediately give written notice thereof to the Trustee and to the Exchange
Rate Agent (and upon receipt thereof the Trustee will promptly thereafter give
notice in the manner provided for in Section 106 to the affected Holders)
specifying the Currency Conversion Date and the Specified Amount of each
Component Currency on the Currency Conversion Date.  In the event the Company
determines in good faith that any subsequent change in any Component Currency as
set forth in the definition of Specified Amount above has occurred, the Company
will similarly give written notice to the Trustee and the Exchange Rate Agent.

          The Trustee shall be fully justified and protected in relying and
acting upon information received by it from the Company and the Exchange Rate
Agent and shall not otherwise have any duty or obligation to determine the
accuracy or validity of such information.

Section 313. Appointment and Resignation of Successor Exchange Rate Agent.
             ------------------------------------------------------------ 

          (a)  Unless otherwise specified pursuant to Section 301, if and so
long as the Securities of any series (i) are denominated in a currency other
than Dollars or (ii) may be payable in a currency other than Dollars, or so long
as it is required under any other provision of this Indenture, then the Company
will maintain with respect to each such series of Securities, or as so required,
at least one Exchange Rate Agent.  The Company will cause the Exchange Rate
Agent to make the necessary foreign exchange determinations at the time and in
the manner specified pursuant to Section 301 for the purpose of determining the
applicable rate of exchange and, if applicable, for the purpose of converting
the issued currency into the applicable payment currency for the payment of
principal (and premium, if any) and interest, if any, pursuant to Section 312.

          (b)  No resignation of the Exchange Rate Agent and no appointment of a
successor Exchange Rate Agent pursuant to this Section shall become effective
until the acceptance of appointment by the successor Exchange Rate Agent as
evidenced by a written instrument delivered to the Company and the Trustee.
<PAGE>
 
                                       43

          (c)  If the Exchange Rate Agent shall resign, be removed or become
incapable of acting, or if a vacancy shall occur in the office of the Exchange
Rate Agent for any cause, with respect to the Securities of one or more series,
the Company, by or pursuant to a Board Resolution, shall promptly appoint a
successor Exchange Rate Agent or Exchange Rate Agents with respect to the
Securities of that or those series (it being understood that any such successor
Exchange Rate Agent may be appointed with respect to the Securities of one or
more or all of such series and that, unless otherwise specified pursuant to
Section 301, at any time there shall only be one Exchange Rate Agent with
respect to the Securities of any particular series that are originally issued by
the Company on the same date and that are initially denominated and/or payable
in the same currency or currencies, currency unit or units or composite currency
or currencies).
    
Section 314.  CUSIP Numbers.
- - -------------------------- 
             
          The Company in issuing the Securities may use "CUSIP" numbers (if then
generally in use), and, if so, the Trustee shall indicate the "CUSIP" numbers of
the Securities in notices of redemption as a convenience to Holders; provided
                                                                     --------
that any such notice may state that no representation is made as to the
correctness of such numbers either as printed on the Securities or as contained
in any notice of redemption.     

                                 ARTICLE FOUR

                           Satisfaction and Discharge

Section 401.  Satisfaction and Discharge of Indenture.
              --------------------------------------- 

          This Indenture shall upon Company Request cease to be of further
effect with respect to any series of Securities specified in such Company
Request  (except as to any surviving rights of registration of transfer or
exchange of Securities of such series expressly provided for herein or pursuant
hereto and any right to receive Additional Amounts, as provided in Section
1004), and the Trustee, upon receipt of a Company Order, and at the expense of
the Company, 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 with the Trustee or any Paying
          Agent or segregated and held in trust by the Company and thereafter
          repaid to the Company, as provided in Section 1003) have been
          delivered to the Trustee for cancellation; or
<PAGE>
 
                                       44

               (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 Company, 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
               Company,

          and the Company, 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 such 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, if any, 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;

          (2)  the Company has paid or caused to be paid all other sums payable
     hereunder by the Company; and

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

          Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee and any predecessor Trustee under
Section 607, the obligations of the Company to any Authenticating Agent under
Section 611 and, if money shall have been deposited with 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 Money.
              -------------------------- 

          Subject to 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 Company acting as its own Paying Agent)
<PAGE>
 
                                       45

as the Trustee may determine, to the Persons entitled thereto, of the principal
(and premium, if any) and interest, if any, 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 Securities of
any series, means any one of the following events (whatever the reason for such
Event of Default and whether it shall be voluntary or involuntary or be effected
by operation of law 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 any Security of that
     series or of any coupon appertaining thereto, when such interest 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

          (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 or agreement of the Company in this Indenture which affects or is
     applicable to the Securities of that series (other than a default in the
     performance, or breach of a covenant or warranty or agreement which is
     specifically dealt with elsewhere in this Section or which has expressly
     been included in this Indenture solely for the benefit of one or more
     series of Securities other than that series), 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 Company by the Trustee or to the
     Company 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)  a default under any bond, debenture, note or other evidence of
     indebtedness for money borrowed in an aggregate principal amount exceeding
     $20,000,000 by the Company or a Significant Bank (including a default with
     respect to Securities of any series other than that series) or under any
     mortgage, indenture or
<PAGE>
 
                                       46

     instrument under which there may be issued or by which there may be secured
     or evidenced any indebtedness for money borrowed in an aggregate principal
     amount exceeding $20,000,000 by the Company or a Significant Bank
     (including this Indenture), 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, without such
     acceleration having been rescinded or annulled within a period of 10 days
     after there shall have been given, by registered or certified mail, to the
     Company by the Trustee or to the Company and the Trustee by the Holders of
     at least 25% in principal amount of the Outstanding Securities of that
     series a written notice specifying such default and requiring the Company
     to cause such acceleration to be rescinded or annulled and stating that
     such notice is a "Notice of Default" hereunder; provided, however, that,
     subject to the provisions of Sections 601 and 602, the Trustee shall not be
     deemed to have knowledge of such default unless either (A) a Responsible
     Officer of the Trustee shall have actual knowledge of such default or (B)
     the Trustee shall have received written notice thereof from the Company,
     from any Holder, from the holder of any such indebtedness or from the
     trustee under any such mortgage, indenture or other instrument; or

          (6)  the entry by a court having jurisdiction in the premises of (A) a
     decree or order for relief in respect of the Company or a Significant Bank
     in an involuntary case or proceeding under any applicable Federal or State
     bankruptcy, insolvency, reorganization or other similar law or (B) a decree
     or order adjudging the Company or a Significant Bank a bankrupt or
     insolvent, or approving as properly filed a petition seeking
     reorganization, arrangement, adjustment or composition of or in respect of
     the Company under any applicable Federal or State law, or appointing a
     custodian, receiver, liquidator, assignee, trustee, sequestrator or other
     similar official of the Company or a Significant Bank or of any substantial
     part of its property, or ordering the winding up or liquidation of its
     affairs, and the continuance of any such decree or order for relief or any
     such other decree or order unstayed and in effect for a period of 60
     consecutive days; or

          (7)  the commencement by the Company or a Significant Bank of a
     voluntary case or proceeding under any applicable Federal or State
     bankruptcy, insolvency, reorganization or other similar law or of any other
     case or proceeding to be adjudicated a bankrupt or insolvent, or the
     consent by it to the entry of a decree or order for relief in respect of
     the Company or a Significant Bank in an involuntary case or proceeding
     under any applicable Federal or State bankruptcy, insolvency,
     reorganization or other similar law or to the commencement of any
     bankruptcy or insolvency case or proceeding against it, or the filing by it
     of a petition or answer or consent seeking reorganization or relief under
     any applicable Federal or State law, or the consent by it to the filing of
     such petition or to the appointment of or taking possession by a custodian,
     receiver, liquidator, assignee, trustee, sequestrator or other similar
     official of the Company or a Significant Bank or of any substantial part of
     its property, or the making by it or an assignment for
<PAGE>
 
                                       47

     the benefit of creditors, or the admission by it in writing of its
     inability to pay its debts generally as they become due, or the taking of
     corporate action by the Company or a Significant Bank in furtherance of any
     such action; or

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

Section 502. Acceleration of Maturity; Rescission and Annulment.
             -------------------------------------------------- 

          If an Event of Default described in clause (1), (2), (3), (4), (5) or
(8) of Section 501 with respect to Securities of any series at the time
Outstanding occurs and is continuing, then 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 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 of that series)
of all of the Securities of that series to be due and payable immediately, by a
notice in writing to the Company (and to the Trustee if given by Holders), and
upon any such declaration such principal amount (or specified portion thereof)
shall become immediately due and payable.  If an Event of Default described in
clause (6) or (7) of Section 501 occurs and is continuing, then in every such
case the Trustee or the Holders of not less than 25% in principal amount of all
of the Securities then Outstanding may declare the principal amount (or, if any
such Securities are Original Issue Discount Securities or Indexed Securities,
such portion of the principal amount as may be specified in the terms of that
series) of all of the Outstanding Securities to be due and payable immediately,
by a notice in writing to the Company (and to the Trustee if given by the
Holders) and upon any such declaration such principal amount (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 Company and the
Trustee, may rescind and annul such declaration and its consequences if

          (1)  the Company has paid or deposited with the Trustee a sum
     sufficient to pay in the currency, 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 and
     except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)):

               (A)  all overdue installments of interest, if any, on 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
<PAGE>
 
                                       48

          declaration of acceleration and any 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 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 non-payment 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 Company covenants that if

          (1)  default is made in the payment of any installment of interest, if
     any, on any Security of any series and any related coupon when such
     interest becomes due and payable and such default continues for a period of
     30 days, or

          (2)  default is made in the payment of the principal of (or premium,
     if any, on) any Security of any series at its Maturity,

then the Company will, upon demand of the Trustee, pay to it, for the benefit of
the Holders of such Securities or such series and coupons, the whole amount then
due and payable on such Securities and coupons for principal (and premium, if
any) and interest, if any, 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, 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 Company fails to pay such amounts forthwith upon such demand,
the Trustee, in its own name and as trustee of an express trust, may institute a
judicial proceeding for the collection of the sums so due and unpaid, and may
prosecute such proceeding to
<PAGE>
 
                                       49

judgment or final decree, and may enforce the same against the Company or any
other obligor upon such Securities of such series and collect the moneys
adjudged or decreed to be payable in the manner provided by law out of the
property of the Company or any other obligor upon such 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 Company or any other obligor upon the
Securities or the property of the Company 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 Company for the payment of overdue principal, premium, if any,
or interest) shall be entitled and empowered, by intervention in such proceeding
or otherwise, to take any and all actions authorized under the Trust Indenture
Act in order to have claims of the Holders and the Trustee allowed in any such
proceeding and, in particular: (i) to file and prove a claim for the whole
amount (or in the case of Original Issue Discount Securities, such portion of
the principal as may be provided for in the terms thereof) (and premium, if any)
and interest, 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 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 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 to the Trustee or any predecessor
Trustee under Section 606.     

          No provision of this Indenture and nothing contained herein 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
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
<PAGE>
 
                                       50

proceeding; provided, however, the Trustee may vote on behalf of the Holders for
the election of a trustee in bankruptcy or similar official and may be a member
of a creditors' or other similar committee.

Section 505. Trustee May Enforce Claims Without Possession of Securities.
             ----------------------------------------------------------- 

          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, if any, 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, if any, 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) and
          interest, if any, respectively; and

               THIRD:  To the payment of the remainder, if any, to the Company
          or any other Person or Persons entitled thereto.

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
<PAGE>
 
                                       51

          (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;

          (3)  such Holder or Holders have offered to the Trustee security or
     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 and
             ----------------------------------------------------------------
             Interest.
             -------- 

          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
Additional Amounts, if any) and (subject to Sections 305 and 307) interest, if
any, on 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 or 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 Company, the Trustee and the Holders of Securities and coupons shall,
subject to any determination in such proceeding, be restored severally and
respectively to their former positions hereunder and thereafter all rights and
remedies of the Trustee and the Holders shall continue as though no such
proceeding had been instituted.
<PAGE>
 
                                       52

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
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.
              ------------------ 

          The Holders of 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 unjustly prejudicial to the Holders of Securities
     of such series not consenting.

Section 513.  Waiver of Past Defaults.
              ----------------------- 

               The Holders of not less than 66-2/3% 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
<PAGE>
 
                                       53

          (1) in the payment of the principal of (or premium, if any) or
     interest, if any, on 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 such waiver shall extend to any subsequent or
other default or Event of Default or impair any right consequent thereon.

Section 514.  Waiver of Stay or Extension Laws.
              -------------------------------- 

          The Company covenants (to the extent that it may lawfully do so) that
it will not at any time insist upon, or plead, or in any manner whatsoever claim
or take the benefit or advantage of, any stay or extension law wherever enacted,
now or at any time hereafter in force, which may affect the covenants or the
performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all 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.


                                  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 a Responsible Officer of 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,
if any, on any Security of such series, or in the payment of any sinking or
purchase fund installment with respect to the Securities of such series, the
Trustee shall be protected in withholding such notice if and so long as the
board of directors, the executive committee or a trust committee of directors
and/or Responsible Officers of the Trustee in good faith determines that the
withholding of such notice is in the 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 occurrence thereof.  For
<PAGE>
 
                                       54

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):

          (a)  the Trustee may rely and shall be protected in acting or
     refraining from acting upon any resolution, certificate, statement,
     instrument, opinion, report, notice, request, direction, consent, order,
     bond, debenture, note, coupon or other paper or document believed by it to
     be genuine and to have been signed or presented by the proper party or
     parties;

          (b)  any request or direction of the Company mentioned herein shall be
     sufficiently evidenced by a Company Request or Company Order (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 Directors may be sufficiently evidenced by a
     Board Resolution;
         
          (c)  whenever in the administration of this Indenture the Trustee
     shall deem it desirable that a matter be proved or established prior to
     taking, suffering or omitting any action hereunder, the Trustee (unless
     other evidence be herein specifically prescribed) may, in the absence of
     bad faith on its part, rely upon a Board Resolution, an Opinion of 
     Counsel or an Officers' Certificate;      

          (d)  the Trustee may consult with counsel and the advice of such
     counsel (confirmed in writing) or any Opinion of Counsel shall be full and
     complete authorization and protection in respect of any action taken,
     suffered or omitted by it hereunder in good faith and in reliance thereon;

          (e)  the Trustee shall be under no obligation to exercise any of the
     rights or powers vested in it by this Indenture at the request or direction
     of any of the Holders of 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 it against the
     costs, expenses and liabilities which might be incurred by it in compliance
     with such request or direction;

          (f)  the Trustee shall not be bound to make any investigation into the
     facts or matters stated in any resolution, certificate, statement,
     instrument, opinion, report, notice, request, direction, consent, order,
     bond, debenture, note, coupon or other paper or document, but the Trustee,
     in its discretion, may make such further inquiry or investigation into such
     facts or matters as it may see fit, and, if the Trustee shall determine to
     make such further inquiry or investigation, it shall be entitled to examine
     the books, records and premises of the Company, personally or by agent or
     attorney;
<PAGE>
 
                                       55

          (g) the Trustee may execute any of the trusts or powers hereunder or
     perform any duties hereunder either directly or by or through agents,
     attorneys, custodians or nominees and the Trustee shall not be responsible
     for the supervision of or any misconduct or negligence on the part of any
     such agent, attorney, custodian or nominee  appointed with due care by it
     hereunder; and

          (h)  the Trustee shall not be liable for any action taken, suffered or
     omitted by it in good faith and 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.

          The rights and protections afforded to the Trustee by this Indenture
shall also be afforded to it to the extent applicable in its capacity as Paying
Agent, Security Registrar and Exchange Rate Agent, as the case may be.

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 Company, 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 and that the statements made by it in a
Statement of Eligibility on Form T-1 supplied to the Company are true and
accurate, subject to the qualifications set forth therein.  Neither the Trustee
nor any Authenticating Agent shall be accountable for the use or application by
the Company of Securities or the proceeds thereof.

Section 604.  May Hold Securities.
              ------------------- 

          The Trustee, any Authenticating Agent, Paying Agent, Security
Registrar or other agent of the Company, 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 Company with the
same rights it would have if it were not Trustee, Authenticating Agent, Paying
Agent, Security Registrar or such other agent.
<PAGE>
 
                                       56

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 Company.

Section 606.  Compensation and Reimbursement.
              ------------------------------ 

          The Company agrees:

          (1)  to pay to the Trustee from time to time such compensation for all
     services rendered by it hereunder as has been agreed upon in writing (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 to the extent any such expense, disbursement or
     advance may be attributable to its negligence or bad faith; and

          (3)  to indemnify each of the Trustee and any predecessor Trustee (and
     its officers, directors, employees and agents) for, and to hold it harmless
     against, any loss, liability or expense incurred without negligence or bad
     faith on its part, arising out of or in connection with the acceptance or
     administration of 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,
     except to the extent any such loss, liability or expense may be
     attributable to its negligence or bad faith.

          As security for the performance of the obligations of the Company
under this Section, the Trustee shall have a claim 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 (and premium, if any) or interest,
if any, on particular Securities or coupons.

          The Company's payment obligations pursuant to this Section shall
survive the discharge of this Indenture.  When the Trustee incurs expenses after
the occurrence of a Default specified in Section 501(6) or (7) with respect to
the Company, the expenses are intended to constitute expenses of administration
under the Federal Bankruptcy Code.
    
Section 607.  Corporate Trustee Required; Eligibility; Conflicting Interests 
              -------------------------------------------------------------- 
     
<PAGE>
 
                                       57
    
      (a)   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 Person publishes reports
of condition at least annually, pursuant to law or to 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 Person 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.      
      
      (b)   The following indenture shall be deemed to be specfically described 
herein for the purposes of clause (i) of the first proviso contained in TIA 
Section 310(b): Indenture dated as of January 1, 1985 between KeyCorp and 
Bankers Trust Company.      

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 Company.  If an
instrument of acceptance by a successor Trustee shall not have been delivered to
the Trustee within 30 days after the giving of such notice of resignation, the
resigning Trustee may petition any court of competent jurisdiction for the
appointment of a successor Trustee with respect to the Securities of such
series.

          (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 Company.

          (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 Company 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(a) and
     shall fail to resign after written request therefor by the Company 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,
<PAGE>
 
                                       58

then, in any such case, (i) the Company 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 Company, 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 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 Company and the retiring
Trustee, the successor Trustee so appointed shall, forthwith upon its acceptance
of such appointment, become the successor Trustee with respect to the Securities
of such series and to that extent supersede the successor Trustee appointed by
the Company.  If no successor Trustee with respect to the Securities of any
series shall have been so appointed by the Company 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 the Securities of such series.

          (f)  The Company 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 so appointed shall
execute, acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or removal
of the retiring Trustee shall become effective and such successor Trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts and duties of the retiring Trustee; but, on the request
of the Company or the successor Trustee, such retiring Trustee shall, upon
payment of all amounts owed to it pursuant to this Indenture, 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
<PAGE>
 
                                       59

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.  The retiring Trustee shall have no liability for any acts
or omissions of any successor Trustee.

          (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 Company, 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
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 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 Company or any successor Trustee, such
retiring Trustee shall, upon payment of all amounts owed to it pursuant to this
Indenture, 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 Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Trustee all such rights, powers and trusts referred
to in paragraph (a) and (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
<PAGE>
 
                                       60

substantially all 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.  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 original Issue and upon
exchange, registration of transfer or partial redemption thereof or pursuant to
Section 306, and Securities so authenticated shall be entitled to the 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 Company.  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 reasonably acceptable to the Company and, except
as may otherwise be provided pursuant to Section 301, 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, any State thereof 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 to the requirements of said 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.  If 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
<PAGE>
 
                                       61

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 any further act on the part of the Trustee or the Authenticating Agent.

          An Authenticating Agent for any series of Securities may resign at any
time by giving written notice of resignation to the Trustee for such series and
to the Company.  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 Company.  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 Company 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.

          The Company 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
alternative certificate of authentication in the following form:

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

                                BANKERS TRUST COMPANY,
                                  as Trustee


                                By _________________________________,
                                   As Authenticating Agent
                                   -----------------------


                                By _________________________________,
                                   Authorized Officer
                                   ------------------
<PAGE>
 
                                       62

                                 ARTICLE SEVEN

               Holders' Lists and Reports by Trustee and Company

Section 701.  Disclosure of Names and Addresses of Holders.
              -------------------------------------------- 

          Every Holder of Securities or coupons, by receiving and holding the
same, agrees with the Company and the Trustee that neither the Company 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 May 15 of each year commencing with the first May
15 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 May 15 if required by TIA Section
313(a).

Section 703.  Reports by Company.
              ------------------ 

              The Company will:

          (1)  file with the Trustee, within 15 days after the Company 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 Company may be required to file
     with the Commission pursuant to Section 13 or Section 15(d) of the Exchange
     Act; or, if the Company is not required to file information, documents or
     reports pursuant to either of such Sections, then it will file with the
     Trustee and the Commission, 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 Exchange Act 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 Company with the conditions and covenants of this Indenture as may be
     required from time to time by such rules and regulations; and
<PAGE>
 
                                       63

          (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 Company 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. Calculation of Original Issue Discount.      
             --------------------------------------
    
          The Company shall file with the Trustee promptly at the end of each   
calendar year a written notice specifying the amount of original issue 
discount (including daily rates and accrual periods), if any, accrued on 
Outstanding Securities as of the end of such year.      


                             ARTICLE EIGHT

              Consolidation, Merger, Conveyance, Transfer or Lease

Section 801. Company May Consolidate, Etc., Only on Certain Terms.
             ---------------------------------------------------- 

          The Company shall not consolidate with or merge into any other Person
or convey, transfer or lease its properties and assets substantially as an
entirety to any Person, and the Company shall not permit any Person to
consolidate with or merge into the Company or convey, transfer or lease its
properties and assets substantially as an entirety to the Company, unless:

          (1)  in case the Company shall consolidate with or merge into another
     Person or convey, transfer or lease its properties and assets substantially
     as an entirety to any Person, the Person formed by such consolidation or
     into which the Company is merged or the Person which acquires by conveyance
     or transfer, or which leases, the properties and assets of the Company
     substantially as an entirety shall be a corporation, shall be organized and
     validly existing under the laws of the United States of America, any State
     thereof or the District of Columbia and shall expressly assume, by an
     indenture supplemental hereto, executed and delivered to the Trustee, in
     form satisfactory to the Trustee, the due and punctual payment of the
     principal of (and premium, if any) and interest, if any, on all the
     Securities and the performance or observance of every covenant of this
     Indenture on the part of the Company to be performed or observed;

          (2)  immediately after giving effect to such transaction and treating
     any indebtedness which becomes an obligation of the Company or any
     Subsidiary as a result of such transaction as having been incurred by the
     Company or such Subsidiary at the time of such transaction, no Event of
     Default, and no event which, after notice or lapse of time or both, would
     become an Event of Default, shall have happened and be continuing;

          (3)  if, as a result of any such consolidation or merger or such
     conveyance, transfer or lease, shares of Voting Stock of any Principal Bank
     would become subject to a security interest which would not be permitted by
     this Indenture, the Company or such successor Person, as the case may be,
     shall take such steps as shall be necessary effectively to secure the
     Securities equally and ratably with (or prior to) all indebtedness secured
     thereby; and
<PAGE>
 
                                       64

          (4) the Company has delivered to the Trustee an Officers' Certificate 
     and an Opinion of Counsel, each stating that such consolidation, merger,
     conveyance, transfer or lease and, if a supplemental indenture is required
     in connection with such transaction, such supplemental indenture complies
     with this Article and that all conditions precedent herein provided for
     relating to such transaction have been complied with.

Section 802.  Successor Substituted.
              --------------------- 

          Upon any consolidation of the Company with, or merger of the Company
     into, any other Person or any conveyance, transfer or lease of the
     properties and assets of the Company substantially as an entirety in
     accordance with Section 801, the successor Person formed by such
     consolidation or into which the Company is merged or to which such
     conveyance, transfer or lease is made shall succeed to, and be substituted
     for, and may exercise every right and power of, the Company under this
     Indenture with the same effect as if such successor Person had been named
     as the Company herein, and thereafter, except in the case of a lease, the
     predecessor Person shall be relieved of all obligations and covenants under
     this Indenture and the Securities.


                                  ARTICLE NINE

                            Supplemental Indentures

Section 901. Supplemental Indentures Without Consent of Holders.
             -------------------------------------------------- 

          Without the consent of any Holders of Securities or coupons, the
Company, 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 Company and
     the assumption by any such successor of the covenants of the Company herein
     and in the Securities; or

          (2)  to add to the covenants of the Company 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
     Company; 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
<PAGE>
 
                                       65

     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 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 pursuant to the requirements of Section
     801, or otherwise; 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 or 
     exchangeable for any securities of any Person (including the Company); 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 inconsistent with any other provision herein, or to
     make any other provisions with respect to matters or questions arising
     under this Indenture, provided that such action pursuant to this clause (9)
     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, 1302 and
     1303; provided that any such action shall
<PAGE>
 
                                       66

     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 66-2/3% in
     principal amount of the Outstanding Securities of each series affected by
     such supplemental indenture, by Act of said Holders delivered to the
     Company and the Trustee, the Company, when authorized by 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 which
     affect such series of Securities or of modifying in any manner the rights
     of the Holders of Securities of such series and any related coupons under
     this Indenture; provided, however, that no such supplemental indenture
     shall, without the consent of the Holder of each Outstanding Security of
     such series 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 of interest thereon, or
     any premium payable upon the redemption thereof, or change any obligation
     of the Company to pay Additional Amounts pursuant to Section 1004 (except
     as contemplated by Section 801(1) and permitted by Section 901(1)), or
     reduce the portion of the principal of an Original Issue Discount Security
     or Indexed 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 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 adversely affect any right to convert or
     exchange any Security as may be provided pursuant to Section 301 herein, 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 of compliance with certain provisions of this Indenture
     which affect such series or certain defaults applicable to such series
     hereunder and their consequences provided for in this Indenture, or reduce
     the requirements of Section 1404 for quorum or voting, or

          (3)  modify any of the provisions of this Section, Section 513 or
     Section 1010, except to increase any such percentage or to provide that
     certain other provisions of this Indenture which affect such series cannot
     be modified or waived without the consent of the Holder of each Outstanding
     Security of such series.
<PAGE>
 
                                       67

          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.

          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.

Section 903.  Execution of Supplemental Indentures.
              ------------------------------------ 

          In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and 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 Company shall
so determine, new Securities of any series so modified as to conform, in the
opinion of the Trustee and the Company, to any such supplemental indenture may
be prepared and executed by the Company and authenticated and delivered by the
Trustee in exchange for Outstanding Securities of such series.
<PAGE>
 
                                       68

                                 ARTICLE TEN

                                   Covenants

Section 1001.  Payment of Principal, Premium and Interest.
               ------------------------------------------ 

          The Company 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, if any, on the Securities of that series in
accordance with the terms of such series of Securities and this Indenture.  Any
interest due on Bearer Securities on or before Maturity, other than Additional
Amounts, if any, payable as provided in Section 1004 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 of any series pursuant to Section 301, at the option
of the Company, 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.  Unless otherwise specified as contemplated by
Section 301 with respect to any series of Securities, any interest due on Bearer
Securities on or before Maturity shall be payable only upon presentation and
surrender of the several coupons for such interest installments as are evidenced
thereby as they severally mature.

Section 1002.  Maintenance of Office or Agency.
               ------------------------------- 

          If Securities of a series are issuable only as Registered Securities,
the Company 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, where Securities of that series may be surrendered for
registration of transfer or exchange, where Securities of that series that are
convertible or exchangeable may be surrendered for conversion or exchange, as
applicable, and where notices and demands to or upon the Company 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 Company will maintain (A) in
the Borough of Manhattan, The City of New York, an office or agency where any
Registered Securities of that series may be presented or surrendered for
payment, where any Registered Securities of that series may be surrendered for
registration of transfer or  exchange, where Securities of that series that are
convertible or exchangeable may be surrendered for conversion or exchange, as
applicable, where notices and demands to or upon the Company 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 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; 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 Company will maintain a Paying Agent for the Securities of that
series in
<PAGE>
 
                                       69

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 or exchange, where Securities of that series that are
convertible or exchangeable may be surrendered for conversion or exchange, as
applicable, and where notices and demands to or upon the Company in respect of
the Securities of that series and this Indenture may be served.  The Company
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 Company
shall fail to maintain any such required office or agency or shall fail to
furnish the Trustee with the address thereof, such presentations, surrenders,
notices 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 at the offices specified in the
Security, in London, England, and the Company hereby appoints the same as its
agent to receive such respective presentations, surrenders, notices and demands,
and the Company hereby appoints the Trustee its agent to receive all such
presentations, surrenders, notices and demands.

          Unless otherwise specified with respect to any Securities pursuant to
Section 301, no payment of principal, premium or interest on Bearer Securities
shall be made at any office or agency of the Company in the United States or by
check mailed to any address in the United States or by transfer to an account
maintained with a bank located in the United States; provided, however, that, if
the Securities of a series are payable in Dollars, payment of principal of (and
premium, if any) and interest, if any, on any Bearer Security shall be made at
the office of the Company's Paying Agent in the Borough of Manhattan, The City
of New York, if (but only if) payment in Dollars of the full amount of such
principal, premium or interest, as the case may be, at all offices or agencies
outside the United States maintained for such purpose by the Company in
accordance with this Indenture, is illegal or effectively precluded by exchange
controls or other similar restrictions.

          The Company 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 Company 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 Company 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 Company hereby designates as Places of Payment for each series
of Securities the office or agency of the Company in the Borough of Manhattan,
The City of New York, and initially appoints the Trustee at its Corporate Trust
Office in the Borough of Manhattan, The City of New York as Paying Agent in each
such city and as its agent to receive all such presentations, surrenders,
notices and demands.
<PAGE>
 
                                       70

          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 currency other than Dollars or (ii) may be payable in a currency other than
Dollars, or so long as it is required under any other provision of the
Indenture, then the Company 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 Company 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 (or premium, if any) or interest, if
any, on 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 and except, if applicable, as
provided in Sections 312(b), 312(d) and 312(e)) sufficient to pay the principal
of (and premium, if any) and interest, if any, on Securities of such series so
becoming due until such sums shall be paid to such Persons or otherwise disposed
of as herein provided, and will promptly notify the Trustee of its action or
failure so to act.

          Whenever the Company shall have one or more Paying Agents for any
series of Securities and any related coupons, it will, prior to each due date of
the principal of (or premium, if any) or interest, if any, on 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 (or premium, if any) or
interest, if any, so becoming due, such sum to be held in trust for the benefit
of the Persons entitled to such principal, premium or interest and (unless such
Paying Agent is the Trustee) the Company will promptly notify the Trustee of its
action or failure so to act.

          The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which such sums were held by the Company or
such Paying Agent; and, upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such 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
Company, in trust for the payment of the principal of (or premium, if any) or
interest, if any, on any Security of any series and remaining unclaimed for two
years after such principal, premium or interest has become due and payable shall
be paid to the Company on Company Request, or (if then held by the Company)
shall be discharged from such trust; and the Holder of such Security shall
thereafter, as an unsecured general creditor, look only to the Company for
payment of such principal, premium
<PAGE>
 
                                       71

or interest on any Security, without interest thereon, and all liability of the
Trustee or such Paying Agent with respect to such trust money, and all liability
of the Company as trustee thereof, shall thereupon cease; provided, however,
that the Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in an
Authorized Newspaper, 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 Company.

Section 1004. Additional Amounts.
              ------------------ 

          If any Securities of a series provide for the payment of Additional
Amounts, the Company 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, the payment of the principal of (or premium, if any) or interest,
if any, on 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, premium
or interest if there has been any change with respect to the matters set forth
in the below-mentioned Officers' Certificate, the Company will furnish the
Trustee and the Company's principal Paying Agent or Paying Agents, if other than
the Trustee, with an Officers' Certificate instructing the Trustee and such
Paying Agent or Paying Agents whether such payment of principal, 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 Company will pay to the
Trustee or such Paying Agent the Additional 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
<PAGE>
 
                                       72

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 Company covenants to indemnify the
Trustee and any Paying Agent for, and to hold them harmless against, any loss,
liability or expense reasonably incurred without negligence or bad faith on
their part arising out of or in connection with actions taken or omitted by any
of them in reliance on any Officers' Certificate furnished pursuant to this
Section or in reliance on the Company's not furnishing such an Officers'
Certificate.

Section 1005.  Statement by Officers as to Default.
               ----------------------------------- 

          The Company will deliver to the Trustee, within 120 days after the end
of each fiscal year of the Company ending after the date hereof, an Officers'
Certificate, stating whether to the best knowledge of the signers thereof the
Company is in default in the performance and observance of any of the conditions
or covenants of this Indenture (without regard to any period of grace or
requirement of notice provided hereunder) and, if the Company shall be in
default, specifying all such defaults and the nature and status thereof of which
they may have knowledge.

Section 1006.  Existence.
               --------- 

          Subject to Article Eight, the Company will do or cause to be done all
things necessary to preserve and keep in full force and effect its existence,
rights (charter and statutory) and franchises; provided, however, that the
Company shall not be required to preserve any such right or franchise if the
Board of Directors shall determine that the preservation thereof is no longer
desirable in the conduct of the business of the Company and that the loss
thereof is not disadvantageous in any material respect to the Holders.

Section 1007.  Maintenance of Properties.
               ------------------------- 

          The Company will cause all 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 Company may
be necessary so that the business carried on in connection therewith may be
properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Company from discontinuing the
operation or maintenance of any of such properties if such discontinuance is, in
the judgment of the Company, desirable in the conduct of its business or the
business of any Subsidiary and not disadvantageous in any material respect to
the Holders.
<PAGE>
 
                                       73

Section 1008.  Payment of Taxes and Other Claims.
               --------------------------------- 

          The Company 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 the Company or any Subsidiary or
upon the income, profits or property of the Company or any Subsidiary, and (2)
all lawful claims for labor, materials and supplies which, if unpaid, might by
law become a lien upon the property of the Company or any Subsidiary; provided,
however, that the Company 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 by appropriate
proceedings.

Section 1009.  Ownership of Voting Stock of Significant Banks.
               ---------------------------------------------- 

          Subject to Article Eight, the Company will not sell or otherwise
dispose of, or grant a security interest in, or permit any Significant Bank to
issue, any shares of voting stock of such Significant Bank, unless the Company
will own free of any security interest at least 80% of the issued and
outstanding voting stock of such Significant Bank; provided, however, that the
foregoing shall not apply to (x) any such sale or disposition where the proceeds
therefrom are invested, within 90 days of such sale or disposition, in any
Subsidiary (including any corporation which upon such investment becomes a
Subsidiary) engaged in a banking business or any business legally permissible
for bank holding companies; provided, however, that if the proceeds are so
invested in any Subsidiary engaged in a business legally permissible for bank
holding companies other than a banking business, the Company shall not sell or
otherwise dispose of, or grant a security interest in, or permit such Subsidiary
to issue, any shares of voting stock of such Subsidiary to the same extent as if
such Subsidiary were a Significant Bank if, upon making such investment, the
assets of, or held for the account of, such Subsidiary constitutes 10% or more
of the consolidated assets of the Company or (y) any disposition in exchange for
the stock of any bank.

Section 1010.  Waiver of Certain Covenants.
               --------------------------- 

          The Company may, with respect to any series of Securities, omit in any
particular instance to comply with any term, provision or condition which
affects such series set forth in Section 801(3) or Sections 1007 to 1009,
inclusive, and, as specified pursuant to Section 301(15) for Securities of any
series, in any covenants of the Company added to Article Ten pursuant to Section
301(14) or Section 301(15), in connection with Securities of a series if before
the time for such compliance the Holders of at least 66-2/3% in principal amount
of all Outstanding Securities of any series, by Act of such Holders, waive such
compliance in such instance with such term, provision or condition, but no such
waiver shall extend to or affect such term, provision or condition except to the
extent so expressly waived, and, until such waiver shall become effective, the
obligations of the Company and the duties of the Trustee to Holders of
Securities of such series in respect of any such term, provision or condition
shall remain in full force and effect.
<PAGE>
 
                                       74

                                 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.

Section 1102.  Election to Redeem; Notice to Trustee.
               ------------------------------------- 

          The election of the Company to redeem any Securities shall be
evidenced by or pursuant to a Board Resolution.  In case of any redemption at
the election of the Company of less than all the Securities of any series, the
Company shall, at least 60 days prior to the Redemption Date fixed by the
Company (unless a shorter notice shall be satisfactory to the Trustee), notify
the Trustee of such Redemption Date and of the principal amount 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 Company 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 in accordance with the terms of such Securities but, if not
specified, 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 the Trustee in
its customary manner, 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 Company 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 Securities redeemed or to be redeemed only in part, to the
portion of the principal amount of such Securities which has been or is to be
redeemed.
<PAGE>
 
                                       75

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.

          All notices of redemption shall state:

          (l)  the Redemption Date,

          (2)  the Redemption Price and accrued interest to the Redemption Date
     payable as provided in Section 1106, 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 amounts) 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 will
     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,

          (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
<PAGE>
 
                                       76

     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 Company, 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 Company, on which such exchanges may be
     made, and

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

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

Section 1105.  Deposit of Redemption Price.
               --------------------------- 

          Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, 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 and except, if applicable, as provided in Sections 312(b), 312(d)
and 312(e)) 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 and except, if applicable, as provided in Sections
312(b), 312(d) and 312(e)) (together with accrued interest, if any, to the
Redemption Date), and from and after such date (unless the Company 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
<PAGE>
 
                                       77

Company 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 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.

          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 Company and the Trustee if there be
furnished to them such security or indemnity as they may require to save each of
them and any Paying Agent harmless.  If thereafter the Holder of such Security
shall surrender to 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 Redemption Price shall, until paid, bear
interest from the Redemption Date at the rate of interest set forth in such
Security or, in the case of an Original Issue Discount Security, at the Yield to
Maturity of such 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 Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing) and the  Company shall execute, and the Trustee
shall authenticate and deliver to the Holder of such 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.
<PAGE>
 
                                       78

                                 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 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 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 Company 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 Company
pursuant to the terms of such Securities or through the application of permitted
optional sinking fund payments pursuant to the terms of such Securities, in each
case in satisfaction of all or any part of any mandatory sinking fund payment
with respect to the Securities of such series required to be made pursuant to
the terms of such Securities as provided for by the terms of such series;
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 Company will deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing sinking fund payment for
that series pursuant to the terms of that series, the portion hereof, 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
<PAGE>
 
                                       79

Securities of such series and except, if applicable, as provided in Sections
312(b), 312(d) and 312(e)) 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 Company 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
Company 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

                       Defeasance and Covenant Defeasance

Section 1301. Applicability of Article; Company'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 1302 or (b)
covenant defeasance of the Securities of or within a series under Section 1303,
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
Company may at its option by Board Resolution, at any time, with respect to such
Securities and any coupons appertaining thereto, elect to have Section 1302 (if
applicable) or Section 1303 (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 1302.  Defeasance and Discharge.
               ------------------------ 

          Upon the Company's exercise of the above option applicable to this
Section with respect to any Securities of or within a series, the Company 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 1304 are satisfied (hereinafter, "defeasance").
For this purpose, such defeasance means that the Company 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 1305 and the other
Sections of this Indenture referred to in clauses (A) and (B) of this Section,
and to have satisfied all its other obligations under such Securities and
<PAGE>
 
                                       80

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 Company, 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 1304 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 Securities and any coupons appertaining thereto when
such payments are due, (B) the Company'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 1004, (C) the rights, powers, trusts, duties and immunities of the
Trustee hereunder and (D) this Article.  Subject to compliance with this Article
Thirteen, the Company may exercise its option under this Section notwithstanding
the prior exercise of its option under Section 1303 with respect to such
Securities and any coupons appertaining thereto.

Section 1303.  Covenant Defeasance.
               ------------------- 

          Upon the Company's exercise of the above option applicable to this
Section with respect to any Securities of or within a series, the Company shall
be released from its obligations under Sections 1004 and 1005, 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 1304 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 and 1005, 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
Company 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(7) 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 1304.  Conditions to Defeasance or Covenant Defeasance.
               ----------------------------------------------- 

          The following shall be the conditions to application of Section 1302
or Section 1303 to any Outstanding Securities of or within a series and any
coupons appertaining thereto:

               (a)  The Company shall irrevocably have deposited or caused to be
     deposited with the Trustee (or another trustee satisfying the requirements
     of Section 607
<PAGE>
 
                                       81

     who shall agree to comply with the provisions of this Article Thirteen
     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 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 an amount, sufficient, 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 Company 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(5) and 501(6) 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 1302, the Company shall
     have delivered to the Trustee an Opinion of Counsel stating that (i) the
     Company 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,
<PAGE>
 
                                       82

     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 1303, the Company 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 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 Company 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 1302 or the covenant defeasance
     under Section 1303 (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 Company's
     option under Section 1302 or Section 1303 (as the case may be),
     registration is not required under the Investment Company Act of 1940, as
     amended, by the Company, 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 Company in connection therewith pursuant to Section 301.

Section 1305. 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 1305, the
"Trustee") pursuant to Section 1304 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 Company 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, 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 1304(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 312(b)
<PAGE>
 
                                       83

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 1304(a) has been made
in respect of such Security, or (b) a Currency Conversion Event occurs as
contemplated in Section 312(d) or 312(e) or by the terms of any Security in
respect of which the deposit pursuant to Section 1304(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 in respect of such Security
into the currency or currency unit in which such Security becomes payable as a
result of such election or Currency 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 Currency
Conversion Event, for such currency or currency unit in effect (as nearly as
feasible) at the time of the Currency Conversion Event.

          The Company 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 1304 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, the Trustee
shall deliver or pay to the Company from time to time upon Company Request any
money or Government Obligations (or other property and any proceeds therefrom)
held by it as provided in Section 1304 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.

Section 1306.  Reinstatement.
               ------------- 

          If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 1305 by reason of any order or judgment of any court or
governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's obligations under this Indenture and such
Securities and any related coupons shall be revived and reinstated as though no
deposit had occurred pursuant to Section 1302 or 1303, as the case may be, until
such time as the Trustee or Paying Agent is permitted to apply all such money in
accordance with Section 1305; provided, however, that if the Company makes any
payment of principal of (or premium, if any, on) or interest on any such
Security or any related coupon following the reinstatement of its obligations,
the Company shall be subrogated to the rights of the Holders of such Securities
and any related coupons to receive such payment from the money held by the
Trustee or Paying Agent.
<PAGE>
 
                                       84

                                 ARTICLE FOURTEEN

                       Meetings of Holders of Securities

Section 1401.  Purposes for Which Meetings May Be Called.
               ----------------------------------------- 

          If Securities of a series are issuable as Bearer Securities, a meeting
of Holders of Securities of such series may be called at any time and from time
to time pursuant to this Article to make, give or take any request, demand,
authorization, direction, notice, consent, waiver or other action provided by
this Indenture to be made, given or taken by Holders of Securities of such
series.

Section 1402.  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 1401, to be held
at such time and at such place in the Borough of Manhattan, The City of New York
or in London as the Trustee shall determine.  Notice of every meeting of Holders
of 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 Company, 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 1401, by
written request setting forth in reasonable detail the action proposed to be
taken at the meeting, and the Trustee shall not have made the first publication
of the notice of such meeting within 21 days after receipt of such request or
shall not thereafter proceed to cause the meeting to be held as provided herein,
then the Company or the Holders of Securities of such series in the amount above
specified, as the case may be, may determine the time and the place in the
Borough of Manhattan, The City of New York or in London for such meeting and may
call such meeting for such purposes by giving notice thereof as provided in
subsection (a) of this Section.

Section 1403.  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 Company and its counsel.
<PAGE>
 
                                       85

Section 1404.  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 of 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
any such adjourned meeting, such adjourned meeting may be further adjourned for
a period of not less than 10 days as determined by the chairman of the meeting
prior to the adjournment of such adjourned meeting.  Notice of the reconvening
of any adjourned meeting shall be given as provided in Section 1402(a), except
that such notice need be given only once not less than five days prior to the
date on which the meeting is scheduled to be reconvened.  Notice of the
reconvening of any adjourned meeting shall state expressly the percentage, as
provided above, of the principal amount of the Outstanding Securities of such
series which shall constitute a quorum.

          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 Holders of a
majority in principal amount of the Outstanding Securities if that series;
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 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 1404, 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:
<PAGE>
 
                                       86

          (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 1405. 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 Company or by Holders of Securities as provided in Section 1402(b), in which
case the Company 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 1402 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.
<PAGE>
 
                                       87

Section 1406.  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 1402 and, if
applicable, Section 1404.  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 Company and another to the Trustee to be
preserved by the Trustee, the latter to have attached thereto the ballots voted
at the meeting.  Any record so signed and verified shall be conclusive evidence
of the matters therein stated.


                                ARTICLE FIFTEEN

                       Repayment at the Option of Holders


Section 1501.  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 terms of such
Securities and (except as otherwise specified by the terms of such series
established pursuant to Section 301) in accordance with this Article.

Section 1502.  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 the Repayment Price thereof, together with
interest, if any, thereon accrued to the Repayment Date specified in or pursuant
to the terms of such Securities. The Company covenants that on or before the
Repayment Date it will deposit with the Trustee or with a Paying Agent (or, if
the Company 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 and       
<PAGE>
 
                                       88
    
except, if applicable, as provided in Sections 312(b), 312(d) and 312(e))
sufficient to pay the Repayment Price 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 1503.  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.  To be repaid at the option of the Holder, any Security so
providing for such repayment, with the "Option to Elect Repayment" form on the
reverse of such Security duly completed by the Holder (or by the Holder's
attorney duly authorized in writing), must be received by the Company at the
Place of Payment therefor specified in the terms of such Security (or at such
other place or places of which the Company shall from time to time notify the
Holders of such Securities) not earlier than 45 days nor later than 30 days
prior to the Repayment Date.  If less than the entire Repayment Price of such
Security is to be repaid in accordance with the terms of such Security, the
portion of the Repayment Price 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 such Security surrendered that is not to be repaid, must be
specified. 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 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
Company.      

Section 1504. 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 Company on the Repayment Date therein
specified, and on and after such Repayment Date (unless the Company 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
Company, 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
<PAGE>
 
                                       89

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 Company 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 1502 an amount equal to the face amount of all such missing
coupons, or the surrender of such missing coupon or coupons may be waived by the
Company and the Trustee if there be furnished to them such security or indemnity
as they may require to save each of them and any Paying Agent harmless.  If
thereafter the Holder of such 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 any Security surrendered for repayment shall not be so repaid upon
surrender thereof, the Repayment Price (together with interest, if any, thereon
accrued to such Repayment Date) shall, until paid, bear interest from the
Repayment Date at the rate of interest set forth in such Security or, in the
case of an Original Issue Discount Security, at the Yield to Maturity of such
Security.      

Section 1505.  Securities Repaid in Part.
               ------------------------- 

          Upon surrender of any Registered Security which is to be repaid in
part only, the Company shall execute and the Trustee shall authenticate and
deliver to the Holder of such Security, without service charge and at the
expense of the Company, 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.
<PAGE>
 
                                       90

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

          This instrument 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 instrument.

          IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.

                                    KEYCORP


                                    By  /S/ Carter B. Chase                    
                                      ---------------------------------------
Attest:

/S/ Daniel R. Stolzer
- - ------------------------------

                                    BANKERS TRUST COMPANY


                                    By  /S/ Jenna Rossheim                     
                                      ---------------------------------------

Attest:

/S/ Susan Gaon 
- - ------------------------------
<PAGE>
 
STATE OF OHIO            )
                         )     ss.:
COUNTY OF CUYAHOGA       )



          On the 14th day of June, 1994, before me personally came 
Carter B. Chase, to me known, who, being by me duly sworn, did depose and say
that he is E.V.P., Gen. Counsel & Secretary of KeyCorp, one of the corporations
described in and which executed the foregoing instrument; that he knows the seal
of said corporation; that the seal affixed to said instrument is such corporate
seal; that it was so affixed by authority of the Board of Directors of said
corporation, and that he signed his name thereto by like authority.

/s/ Janet M. Golem
- - ----------------------------
Janet M. Golem, Notary Public
My comm. exp. 11/4/95


STATE OF NEW YORK        )
                         )     ss.:
COUNTY OF NEW YORK       )



          On the ____ day of ____________, 1994, before me personally came
_______________, to me known, who, being by me duly sworn, did depose and say
that she is a Trust Officer of Bankers Trust Company, one of the corporations
described in and which executed the foregoing instrument; that he knows the seal
of said corporation; that the seal affixed to said instrument is such corporate
seal; that it was so affixed by authority of the Board of Directors of said
corporation, and that he signed his name thereto by like authority.


- - ----------------------------
<PAGE>
 
STATE OF NEW YORK        )
                         )     ss.:
COUNTY OF NEW YORK       )



          On the ____ day of ____________, 1994, before me personally came
_________________________, to me known, who, being by me duly sworn, did depose
and say that he is _____________________ of KeyCorp, one of the corporations
described in and which executed the foregoing instrument; that he knows the
seal of said corporation; that the seal affixed to said instrument is such
corporate seal; that it was so affixed by authority of the Board of Directors of
said corporation, and that he signed his name thereto by like authority.


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



STATE OF NEW YORK        )
                         )     ss.:
COUNTY OF NEW YORK       )



          On the 20th day of July, 1994, before me personally came
Jenna Rossheim, to me known, who, being by me duly sworn, did depose and say
that she is an Assistant Vice President of Bankers Trust Company, one of the
corporations described in and which executed the foregoing instrument; that she
knows the seal of said corporation; that the seal affixed to said instrument is
such corporate seal; that it was so affixed by authority of the Board of
Directors of said corporation, and that she signed her name thereto by like
authority.

                         /s/ Margaret Bereza
                         ----------------------------
                         Margaret Bereza
                         Notary Public - State of New York
                         No. 31-5023900
                         Qualified New York County
                         Commission Expires 2/22/96
<PAGE>
 
                                   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 persons(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 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 United States financial
institution hereby agrees, on its own behalf or through its agent, that you may
advise [Name of Issuer] 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>
 
          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:

[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 Signatory)
                                        -------------------- 
                                       Name:
                                       Title:

                                     A-1-2
<PAGE>
 
                                  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 [Name of Issuer] 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

                                     A-2-1
<PAGE>
 
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 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:

[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 COMPANY OF NEW YORK,
                                  BRUSSELS OFFICE, as Operator of the Euroclear
                                  System]
                                  [CEDEL S.A.]


                                  By
                                    ___________________________________________

                                     A-2-2

<PAGE>
 
                                                                    Exhibit 4(b)

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

                                    KEYCORP

                                       TO

                             BANKERS TRUST COMPANY,
                                                  Trustee



                               __________________

                          SUBORDINATED DEBT SECURITIES

                               __________________

                                   INDENTURE

                          Dated as of June 10, 1994


                               __________________



- - --------------------------------------------------------------------------------
<PAGE>
 
                                    KEYCORP
                 Certain Sections of this Indenture relating to
                  Sections 310 through 318, inclusive, of the
                          Trust Indenture Act of 1939:



<TABLE>
<CAPTION>
Trust Indenture
Act Section                                         Indenture Section
<S>                                                 <C>
(S)310 (a)(1)..................................     607(a)
       (a)(2)..................................     607(a)
       (b).....................................     607(b), 608
(S)312 (c).....................................     701
(S)314 (a).....................................     703
       (a)(4)..................................     1005
       (c)(1)..................................     102
       (c)(2)..................................     102
       (e).....................................     102
(S)315 (b).....................................     601
(S)316 (a) (last sentence).....................     101 ("Outstanding")
       (a)(1)(A)...............................     502, 512
       (a)(1)(B)...............................     513
       (b).....................................     508
       (c).....................................     104(e)
(S)317 (a)(1)..................................     503
       (a)(2)..................................     504
(S)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.
<PAGE>
 
                       TABLE OF CONTENTS

<TABLE> 
<S>                                                            <C> 
    RECITALS OF THE COMPANY...................................  1

                          ARTICLE ONE

               Definitions and Other Provisions
                    of General Application


    Section 101.  Definitions.................................  1
    Section 102.  Compliance Certificates and Opinions........ 14
    Section 103.  Form of Documents Delivered to Trustee...... 15
    Section 104.  Acts of Holders; Record Dates............... 15
    Section 105.  Notices, Etc. to Trustee and Company........ 17
    Section 106.  Notice to Holders; Waiver................... 17
    Section 107.  Effect of Headings and Table of Contents.... 18
    Section 108.  Successors and Assigns...................... 19
    Section 109.  Separability Clause......................... 19
    Section 110.  Benefits of Indenture....................... 19
    Section 111.  Governing Law............................... 19
    Section 112.  Legal Holidays.............................. 19
    Section 113.  Obligations of the Company Not Obligations 
                  of the Trustee.............................. 20

                          ARTICLE TWO

                        Security Forms


    Section 201.  Forms Generally............................. 20
    Section 202.  Form of Trustee's Certificate of 
                  Authentication.............................. 21
    Section 203.  Securities Issuable in Global Form.......... 21

                         ARTICLE THREE

                        The Securities


    Section 301.  Amount Unlimited; Issuable in Series........ 22
    Section 302.  Denominations............................... 27
    Section 303.  Execution, Authentication, Delivery and 
                  Dating...................................... 27
    Section 304.  Temporary Securities........................ 29
    Section 305.  Registration, Registration of Transfer and 
                  Exchange.................................... 32
    Section 306.  Mutilated, Destroyed, Lost and Stolen 
                  Securities.................................. 35
</TABLE> 
<PAGE>
 
                                       ii

<TABLE> 
<S>                                                            <C> 
    Section 307.  Payment of Interest; Interest Rights 
                  Preserved; Optional Interest Reset.......... 36
    Section 308.  Optional Extension of Maturity.............. 40
    Section 309.  Persons Deemed Owners....................... 41
    Section 310.  Cancellation................................ 42
    Section 311.  Computation of Interest..................... 42
    Section 312.  Currency and Manner of Payments in Respect 
                  of Securities............................... 42
    Section 313.  Appointment and Resignation of Successor 
                  Exchange Rate Agent......................... 47
    Section 314.  CUSIP Numbers............................... 47

                         ARTICLE FOUR

                  Satisfaction and Discharge


    Section 401.  Satisfaction and Discharge of Indenture..... 48
    Section 402.  Application of Trust Money.................. 49

                         ARTICLE FIVE

                           Remedies


    Section 501.  Events of Default........................... 50
    Section 502.  Acceleration of Maturity; Rescission and 
                  Annulment................................... 51
    Section 503.  Collection of Indebtedness and Suits for 
                  Enforcement by Trustee...................... 52
    Section 504.  Trustee May File Proofs of Claim............ 54
    Section 505.  Trustee May Enforce Claims Without 
                  Possession of Securities.................... 54
    Section 506.  Application of Money Collected.............. 55
    Section 507.  Limitation on Suits......................... 55
    Section 508.  Unconditional Right of Holders to Receive 
                  Principal, Premium and Interest............. 56
    Section 509.  Restoration of Rights and Remedies.......... 56
    Section 510.  Rights and Remedies Cumulative.............. 57
    Section 511.  Delay or Omission Not Waiver................ 57
    Section 512.  Control by Holders.......................... 57
    Section 513.  Waiver of Past Defaults..................... 57
    Section 514.  Waiver of Stay or Extension Laws............ 58
</TABLE> 
<PAGE>
 
                                      iii

<TABLE> 
<S>                                                            <C> 
                          ARTICLE SIX

                          The Trustee


    Section 601.  Notice of Defaults.......................... 58
    Section 602.  Certain Rights of Trustee................... 59
    Section 603.  Not Responsible for Recitals or Issuance of 
                  Securities.................................. 60
    Section 604.  May Hold Securities......................... 61
    Section 605.  Money Held in Trust......................... 61
    Section 606.  Compensation and Reimbursement.............. 61
    Section 607.  Corporate Trustee Required; Eligibility..... 62
    Section 608.  Resignation and Removal; Appointment of 
                  Successor................................... 62
    Section 609.  Acceptance of Appointment by Successor...... 64
    Section 610.  Merger, Conversion, Consolidation or 
                  Succession to Business...................... 65
    Section 611.  Appointment of Authenticating Agent......... 66

                         ARTICLE SEVEN

       Holders' Lists and Reports by Trustee and Company


    Section 701.  Disclosure of Names and Addresses of Holders 68
    Section 702.  Reports by Trustee.......................... 68
    Section 703.  Reports by Company.......................... 68
    Section 704.  Calculation of Original Issue Discount...... 69

                         ARTICLE EIGHT

     Consolidation, Merger, Conveyance, Transfer or Lease


    Section 801.  Company May Consolidate, Etc., Only on 
                  Certain Terms............................... 69
    Section 802.  Successor Substituted....................... 70

                         ARTICLE NINE

                    Supplemental Indentures


    Section 901.  Supplemental Indentures Without Consent of 
                  Holders..................................... 70
    Section 902.  Supplemental Indentures with Consent of 
                  Holders..................................... 72
    Section 903.  Execution of Supplemental Indentures........ 73
</TABLE> 
<PAGE>
 
                                       iv

<TABLE> 
<S>                                                            <C> 
    Section 904.  Effect of Supplemental Indentures........... 74
    Section 905.  Conformity with Trust Indenture Act......... 74
    Section 906.  Reference in Securities to Supplemental 
                  Indentures.................................. 74
    Section 907.  Subordination Unimpaired.................... 74

                          ARTICLE TEN

                           Covenants


    Section 1001. Payment of Principal, Premium and Interest.. 75
    Section 1002. Maintenance of Office or Agency............. 75
    Section 1003. Money for Securities Payments to Be Held in 
                  Trust....................................... 77
    Section 1004. Additional Amounts.......................... 78
    Section 1005. Statement by Officers as to Default......... 79
    Section 1006. Existence................................... 79
    Section 1007. Maintenance of Properties................... 80
    Section 1008. Payment of Taxes and Other Claims........... 80
    Section 1009. Waiver of Certain Covenants................. 80

                        ARTICLE ELEVEN

                   Redemption of Securities


    Section 1101. Applicability of Article.................... 81
    Section 1102. Election to Redeem; Notice to Trustee....... 81
    Section 1103. Selection by Trustee of Securities to Be  
                  Redeemed.................................... 81
    Section 1104. Notice of Redemption........................ 82
    Section 1105. Deposit of Redemption Price................. 83
    Section 1106. Securities Payable on Redemption Date....... 84
    Section 1107. Securities Redeemed in Part................. 85

                        ARTICLE TWELVE

                         Sinking Funds


    Section 1201. Applicability of Article.................... 85
    Section 1202. Satisfaction of Sinking Fund Payments with  
                  Securities.................................. 85
    Section 1203. Redemption of Securities for Sinking Fund... 86
</TABLE> 
<PAGE>
 
                                       v

<TABLE> 
<S>                                                            <C> 
                       ARTICLE THIRTEEN

              Defeasance and Covenant Defeasance


    Section 1301. Applicability of Article; Company's Option 
                  to Effect Defeasance or Covenant Defeasance.  87
    Section 1302. Defeasance and Discharge....................  87
    Section 1303. Covenant Defeasance.........................  88
    Section 1304. Conditions to Defeasance or Covenant      
                  Defeasance..................................  88
    Section 1305. Deposited Money and Government Obligations  
                  to Be Held in Trust; Other Miscellaneous  
                  Provisions..................................  90
    Section 1306. Reinstatement...............................  91

                       ARTICLE FOURTEEN

               Meetings of Holders of Securities


    Section 1401. Purposes for Which Meetings May Be Called...  92
    Section 1402. Call, Notice and Place of Meetings..........  92
    Section 1403. Persons Entitled to Vote at Meetings........  93
    Section 1404. Quorum; Action..............................  93
    Section 1405. Determination of Voting Rights; Conduct and 
                  Adjournment of Meetings.....................  94
    Section 1406. Counting Votes and Recording Action of    
                  Meetings....................................  95

                        ARTICLE FIFTEEN

                   Conversion of Securities


    Section 1501. Applicability of Article....................  96
    Section 1502. Right of Holders to Convert Securities......  96
    Section 1503. Issuance of Shares of Common Stock on     
                  Conversions.................................  97
    Section 1504. No Payment or Adjustment for Interest or  
                  Dividends...................................  98
    Section 1505. Adjustment of Conversion Price..............  98
    Section 1506. No Fractional Shares to Be Issued........... 104
    Section 1507. Preservation of Conversion Rights upon    
                  Consolidation, Merger, Sale or Conveyance... 104
    Section 1508. Notice to Holders of the Securities of a  
                  Series Prior to Taking Certain Types of   
                  Action...................................... 105
</TABLE> 
<PAGE>
 
                                       vi

<TABLE> 
<S>                                                            <C> 
    Section 1509. Covenant to Reserve Shares for Issuance 
                  on Conversion of Securities.................  106
    Section 1510. Compliance with Governmental Requirements...  106
    Section 1511. Payment of Taxes upon Certificates for      
                  Shares Issued upon Conversion...............  107
    Section 1512. Trustee's Duties with Respect to Conversion 
                  Provisions..................................  107
                                                              
                        ARTICLE SIXTEEN                       
                                                              
                  Subordination of Securities                 
                                                              
                                                              
    Section 1601. Securities Subordinate to Senior            
                  Indebtedness................................  108
    Section 1602. Payment Over of Proceeds upon Dissolution,  
                  Etc. .......................................  108
    Section 1603. No Payment When Senior Indebtedness in      
                  Default.....................................  109
    Section 1604. Payment Permitted if No Default.............  110
    Section 1605. Subrogation to Rights of Holders of Senior  
                  Indebtedness................................  110
    Section 1606. Provisions Solely to Define Relative Rights.  111
    Section 1607. Trustee to Effectuate Subordination and     
                  Payment Provisions..........................  111
    Section 1608. No Waiver of Subordination Provisions.......  111
    Section 1609. Notice to Trustee...........................  112
    Section 1610. Reliance on Judicial Order or Certificate 
                  of Liquidating Agent........................  113
    Section 1611. Trustee Not Fiduciary for Holders of Senior 
                  Indebtedness or Entitled Persons............  113
    Section 1612. Rights of Trustee as Holder of Senior 
                  Indebtedness or Entitled Person; 
                  Preservation of Trustee's Rights............  113
    Section 1613. Article Applicable to Paying Agents.........  114
    Section 1614. Relationship to Existing Subordinated 
                  Indebtedness; Payment of Excess Proceeds in 
                  Certain Cases...............................  114

                       ARTICLE SEVENTEEN

              Repayment at the Option of Holders


    Section 1701. Applicability of Article....................  116
    Section 1702. Repayment of Securities.....................  116
    Section 1703. Exercise of Option..........................  117
    Section 1704. When Securities Presented for Repayment 
                  Become Due and Payable......................  117
    Section 1705. Securities Repaid in Part...................  118
</TABLE> 

TESTIMONIUM
SIGNATURES AND SEALS
ACKNOWLEDGMENTS
FORMS OF CERTIFICATION


<PAGE>
 
                                      vii

    TESTIMONIUM
    SIGNATURES AND SEALS
    ACKNOWLEDGMENTS
    FORMS OF CERTIFICATION
<PAGE>
 
          INDENTURE, dated as of ___________, 1994, between KeyCorp, a
corporation duly organized and existing under the laws of the State of Ohio
(herein called the "Company"), having its principal office at 127 Public Square,
Cleveland, Ohio 44114, and   Bankers Trust Company, a New York banking
corporation duly organized and existing under the laws of the State of New York,
as Trustee (herein called the "Trustee").

                            RECITALS OF THE COMPANY

          The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its unsecured
subordinated debentures, notes or other evidences of indebtedness (herein called
the "Securities"), to be issued in one or more series as in this Indenture
provided.

          All things necessary to make this Indenture a valid agreement of the
Company, 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, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, 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;

          (2)  all other terms used herein which are defined in the Trust
     Indenture Act, either directly or by reference therein, have the meanings
     assigned to them therein;

          (3)  all accounting terms not otherwise defined herein have the
     meanings assigned to them in accordance with generally accepted accounting
     principles, and, except as otherwise herein expressly provided, the term
     "generally accepted accounting principles" with respect to any computation
     required or permitted hereunder shall mean such accounting principles as
     are generally accepted at the date of such computation; and
<PAGE>
 
                                       2

          (4) the words "herein", "hereof" and "hereunder" and other words of
     similar import refer to this Indenture as a whole and not to any particular
     Article, Section or other subdivision.

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

          "Authenticating Agent" means any authenticating agent appointed by the
Trustee pursuant to Section 611.

          "Authorized Newspaper" means a newspaper, 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.  Where successive
publications are required to be made in Authorized Newspapers, the successive
publications may be made in the same or in different newspapers in the same city
meeting the foregoing requirements and in each case on any Business Day.

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

          "Board of Directors" means the board of directors of the Company, 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 Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee.

          "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, each Monday, Tuesday, Wednesday, Thursday and Friday which is not a
day on which banking institutions in that
<PAGE>
 
                                       3

Place of Payment or particular location are authorized or obligated by law or
executive order to close.

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

          "CEDEL" means Centrale 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 Exchange Act, or, if at any time
after the execution of this instrument such Commission is not existing and
performing the duties now assigned to it under the Trust Indenture Act, then the
body performing such duties at such time.

          "Common Stock" means the Common Shares of the Company with a par value
of $1.00 each.

          "Common Depositary" has the meaning specified in Section 304(b).

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

          "Company Request" or "Company Order" means, respectively,  a written
request or order signed in the name of the Company by a Chairman of the Board, a
Vice Chairman of the Board, its President or a Vice President, and by its
Treasurer, an Assistant Treasurer, its Secretary or an Assistant Secretary, and
delivered to the Trustee in accordance with Section 105 hereof.

          "Component Currency" has the meaning specified in Section 312(h).

          "Corporate Trust Office" means the principal office of the Trustee in
New York, New York at which at any particular time its corporate trust business
shall be administered, which office at the date of execution of this Indenture
is located at Four Albany Street, New York, New York 10006, Attn:  Corporate
Trust and Agency Group.

          "corporation" means a corporation, association, company, joint-stock
company or business trust.

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

          "Currency Conversion Date" has the meaning specified in Section
312(d).
<PAGE>
 
                                       4

          "Currency 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.

          "Currency Election Date" has the meaning specified in Section 312(h).

          "Currency Indexed Note" means any Security with the amount of
principal payments determined by reference to an index currency.

          "Default" has the meaning specified in Section 503.

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

          "Depositary" means, with respect to the Securities of any series
issuable in whole or in part in the form of one or more Global Securities, the
clearing agency registered under the Exchange Act specified for that purpose as
contemplated by Section 301.

          "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.

          "Dollar Equivalent of the Currency Unit" has the meaning specified in
Section 312(g).

          "Dollar Equivalent of the Foreign Currency" has the meaning specified
in Section  312(f).

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

          "Entitled Persons" means any Person entitled to payment pursuant to
the terms of Other Senior Obligations.

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

          "European Communities" means the European Union, 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.
<PAGE>
 
                                       5

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

          "Excess Proceeds" has the meaning specified in Section 1614(c).

          "Exchange Act" means the Securities Exchange Act of 1934 as it may be
amended and any successor act thereto.

          "Exchange Rate Agent", with respect to Securities of or within any
series, means, unless otherwise specified with respect to any Securities
pursuant to Section 301, a New York Clearing House bank designated pursuant to
Section 301 or Section 313.

          "Exchange Rate Officer's Certificate" means a certificate setting
forth (i) the applicable Market Exchange Rate or the applicable bid quotation
and (ii) the Dollar or Foreign Currency amounts of principal (and premium, if
any) and interest, if any (on an aggregate basis and on the basis of a Security
having the lowest denomination principal amount determined in accordance with
Section 302 in the relevant currency or currency unit), payable with respect to
a Security of any series on the basis of such Market Exchange Rate or the
applicable bid quotation signed by the Treasurer, any Vice President or any
Assistant Treasurer of the Company.

          "Existing Subordinated Indebtedness" means all indebtedness for
borrowed money of the Company under its 8.40% Subordinated Capital Notes due
April 1, 1999, 8.125% Subordinated Notes due June 15, 2002, 8.00% Subordinated
Notes due July 1, 2004,  Subordinated Medium-Term Notes, Series IV due from 1998
to 2003 and Adjustable Rate Convertible Subordinated Debentures due 2004, and
any renewals, extensions, modifications and refundings of any such indebtedness.

          "Extension Notice" has the meaning specified in Section 308.

          "Extension Period" has the meaning specified in Section 308.

          "Final Maturity" has the meaning specified in Section 308.

          "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.

          "Foreign Currency Note" means any Security denominated in one or more
Foreign Currencies.

          "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 such government which issued the Foreign
Currency in which the Securities of such series are payable, the payment of
<PAGE>
 
                                       6

which is unconditionally guaranteed as a full faith and credit obligation by the
United States of America or such 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 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 a 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.

          "indebtedness for  money borrowed" means the principal of (and
premium, if any) and interest on (a) all indebtedness of the Company (including
indebtedness of others guaranteed by the Company), whether outstanding on the
date of this Indenture or thereafter created, incurred, assumed or guaranteed,
which is for money borrowed and (b) any renewals, extensions, modifications and
refundings of any such indebtedness.
    
          "Indexed Security" means a Security as to which all or certain 
interest payments and/or the principal amount payable at Maturity are determined
by reference to prices, changes in prices, or differences between prices, of
securities, currency or currencies, currency unit or units or composite currency
or currencies, intangibles, goods, articles or commodities or by such other
objective price, economic or other measures as are specified in Section 301
hereof.      

          "Interest", when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, means interest
payable after Maturity, and, when used with respect to a Security which provides
for the payment of Additional Amounts pursuant to Section 1004, includes such
Additional Amounts.
<PAGE>
 
                                       7

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

          "Major Bank" means any directly or indirectly owned banking subsidiary
of the Company, the consolidated assets of which constitute 75 percent or more
of the consolidated total assets of the Company.

          "Market Exchange Rate" means, unless otherwise specified with respect
to any Securities pursuant to Section 301, (i) for any conversion involving a
currency unit on the one hand and Dollars or any other Foreign Currency on the
other, the exchange rate between the relevant currency unit and Dollars or such
Foreign Currency calculated by the method specified pursuant to Section 301 for
the Securities of the relevant series, (ii) for any conversion of Dollars into
any Foreign Currency, the noon buying rate for such Foreign Currency for cable
transfers quoted in New York City as certified for customs purposes by the
Federal Reserve Bank of New York and (iii) for any conversion of one Foreign
Currency into Dollars or another Foreign Currency, the spot rate at noon local
time in the relevant market at which, in accordance with normal banking
procedures, the Dollars or Foreign Currency into which conversion is being made
could be purchased with the Foreign Currency from which conversion is being made
from major banks located in either New York City, London or any other principal
market for Dollars of such purchased Foreign Currency, in each case determined
by the Exchange Rate Agent.  Unless otherwise specified with respect to any
Securities pursuant to Section 301, in the event of the unavailability of any of
the exchange rates provided for in the foregoing clauses (i), (ii) and (iii),
the Exchange Rate Agent shall use, in its sole discretion and without liability
on its part, such quotation of the Federal Reserve Bank of New York as of the
most recent available date, or quotations from any or more major banks in New
York City, London or other principal market for such currency or currency unit
in question, or such other quotations as the Exchange Rate Agent shall deem
appropriate.  Unless otherwise specified by the Exchange Rate Agent, if there is
more than one market for dealing in any currency or currency unit by reason of
foreign exchange regulations or otherwise, the market to be used in respect of
such currency or currency unit shall be that upon which a nonresident issuer of
securities designated in such currency or currency unit would purchase such
currency or currency unit in order to make payments in respect of such
securities.

          "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.

          "Officers' Certificate" means a certificate signed by the Chairman of
the Board, a Vice Chairman of the Board, the President or a Vice President, and
by the Treasurer, an Assistant Treasurer, the Secretary or an Assistant
Secretary, of the Company, and delivered to the Trustee in accordance with
Section 105 hereof.  One of the officers signing an Officers' Certificate given
pursuant to Section 1005 shall be the principal executive, financial or
accounting officer of the Company.
<PAGE>
 
                                       8

          "Old KeyCorp" means KeyCorp, a New York corporation, that was merged
with and into Society Corporation, an Ohio corporation, on March 1, 1994.

          "Old KeyCorp Subordinated Indentures" means (a) the Indenture dated as
of January 1, 1985 entered into between Old KeyCorp and Chemical Bank, as
supplemented by the First Supplemental Indenture dated as of December 31, 1989
entered into between Old KeyCorp and Chemical Bank, the Second Supplemental
Indenture dated as of June 29, 1992 entered into between Old KeyCorp and
Chemical Bank, the Third Supplemental Indenture dated as of November 19, 1992
entered into between Old KeyCorp and Chemical Bank and the Fourth Supplemental
Indenture dated as of March 1, 1994 entered into among Old KeyCorp, Society
Corporation and Chemical Bank, and (b) the Indenture dated as of March 1, 1987
entered into between Old KeyCorp and Chemical Bank, as supplemented by the First
Supplemental Indenture dated as of March 1, 1994 entered into among KeyCorp,
Society Corporation and Chemical Bank.

          "Opinion of Counsel" means a written opinion of counsel, who may be an
employee of the Company or other counsel for the Company, or other counsel
acceptable to the Trustee.

          "Optional Reset Date" has the meaning specified in Section 307(b).

          "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.

          "Original Stated Maturity" has the meaning specified in Section 308.

          "Other Senior Obligations" means any obligation of the Company to its
creditors, whether outstanding on the date of execution of this Indenture or
thereafter created, assumed, incurred or guaranteed, except (i) indebtedness on
account of Senior Indebtedness, (ii) indebtedness on account of all Securities
issued under this Indenture, indebtedness on account of all Existing
Subordinated Indebtedness and all indebtedness which specifically by its terms
ranks equally with and not prior to the Securities or any of the Existing
Subordinated Indebtedness in right of payment upon the happening of any event of
the kind specified in the first sentence of the first paragraph of Section 1602
and (iii)  indebtedness which specifically by its terms ranks junior to and not
equally with or prior to indebtedness referred to in clause (ii) above in right
of payment  upon the happening of any event of the kind specified in the first
sentence of the first paragraph of Section 1602.

          "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 cancelled by the Trustee or delivered to
     the Trustee for cancellation;
<PAGE>
 
                                       9

          (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 Company) in trust or set aside and segregated in trust by the Company
     (if the Company shall act as its own Paying Agent) for the Holders of such
     Securities and on 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 1302 and
     1303, with respect to which the Company has effected defeasance and/or
     covenant defeasance as provided in Article Thirteen; and

          (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 Company;
    
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 as of the date such Security is originally
issued by the Company as set forth in an Exchange Rate Officer's Certificate
delivered to the Trustee, of the principal amount (or, in the case of an
Original Issue Discount Security or Indexed Security, the dollar equivalent as
of such date of original issuance of the amount determined as provided in clause
(i) above or (iii) below, respectively) 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 Company or any other obligor upon
the Securities or any Affiliate of the Company or of such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in making such calculation or in relying
upon any such request, demand, authorization, direction, notice, consent or
waiver, only Securities which a Responsible Officer of 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      
<PAGE>
 
                                       10

not the Company or any other obligor upon the Securities or any Affiliate of the
Company or of such other obligor.

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

          "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, if any, 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
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.

          "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 the 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.

          "Reset Notice" has the meaning specified in Section 307(b).
<PAGE>
 
                                       11

          "Responsible Officer" means, when used with respect to the Trustee,
any officer within the Corporate Trust and Agency Group (or any successor group
thereto) of the Trustee, including any Vice President, Assistant Vice President,
Secretary, Assistant Secretary or any other officer of the Trustee customarily
performing functions similar to those performed by any of the above designated
officers and, with respect to a particular matter, any other officer to whom
such matter is referred because of such officer's knowledge of and familiarity
with the particular subject.

          "Security" or "Securities" 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 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.

          "Senior Indebtedness" means the principal of (and premium, if any) and
interest on (a) all indebtedness of the Company for money borrowed, whether
outstanding on the date of execution of this Indenture or thereafter created,
assumed, incurred or guaranteed, except (i) indebtedness on account of all
Securities issued under this Indenture, indebtedness on account of all Existing
Subordinated Indebtedness and all indebtedness which specifically by its terms
ranks equally with and not prior to the Securities or any of the Existing
Subordinated Indebtedness in right of payment upon the happening of any event of
the kind specified in the first paragraph of Section 1602 and (ii) indebtedness
which specifically by its terms ranks junior to and not equally with or prior to
indebtedness referred to in clause (i) above in right of payment upon the
happening of any event of the kind specified in the first paragraph of Section
1602 and (b) any  renewals, extensions, modifications and refundings of any such
Senior Indebtedness.

          "Society Subordinated Indenture" means the Indenture dated as of June
15, 1992 entered into between Society Corporation and Morgan Guaranty Trust
Company of New York, as supplemented by the First Supplemental Indenture dated
as of December 15, 1992 entered into between Society Corporation and Morgan
Guaranty Trust Company of New York.

          "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.

          "Specified Amount" has the meaning specified in Section 312(h).

          "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
<PAGE>
 
                                       12

Security or such installment of principal or interest is due and payable, as
such date may be extended pursuant to the provisions of Section 308.

          "Subsequent Interest Period" has the meaning specified in Section
307(b).

          "Subsidiary" means a corporation more than 50% of the outstanding
voting stock of which is owned, directly or indirectly, by the Company or by one
or more other Subsidiaries, or by the Company and one or more other
Subsidiaries.  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.

          "Temporary/Definitive Exchange Date" has the meaning specified in
Section 304(b).

          "Trading Day" has the meaning specified in Section 1505(e).

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

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

          "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.

          "Valuation Date" has the meaning specified in Section 312(c).

          "Vice President", when used with respect to the Company, means any
vice president, whether or not designated by a number or a word or words added
before or after the title "vice president".

          "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
<PAGE>
 
                                       13

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 Company to the Trustee to take
any action under any provision of this Indenture, the Company shall furnish to
the Trustee an Officers' Certificate stating that all conditions precedent, if
any, provided for in this Indenture relating to the proposed action have been
complied with and an Opinion of Counsel stating that in the opinion of such
counsel all such conditions precedent, if any, have been complied with, except
that in the case of any such application or request as to which the furnishing
of such documents is specifically required by any provision of this Indenture
relating to such particular application or request, no additional certificate or
opinion need be furnished.

          Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include:

          (1)  a statement that each individual signing such certificate or
     opinion has read such 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 such covenant or condition has
     been complied  with;  and

          (4)  a statement as to whether, in the opinion of each such
     individual, such condition or covenant has been complied with.

Section 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 with respect
     to some matters and one or more other such Persons as to other matters, and
     any such Person may certify or give an opinion as to such matters in one or
     several documents.

               Any certificate or opinion of an officer of the Company may be
     based, insofar as it relates to legal matters, upon 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 certificate or
     opinion or representations with respect to the matters upon which his
     certificate or opinion is based are erroneous.  Any such Opinion of Counsel
     or certificates or
<PAGE>
 
                                       14

     representations of counsel may be based, insofar as they relate to factual
     matters, upon a certificate or opinion of, or representations by, an
     officer or officers of the Company stating that the information as to such
     factual matters is in the possession of the Company, unless such counsel
     knows, or in the exercise of reasonable care should know, that the
     certificate or opinion or representations with respect 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.

     Section 104.  Acts of Holders; Record Dates.
                   ----------------------------- 

               (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 an agent or 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 Fourteen, or a combination of such instruments and
     any such record.  Except as herein otherwise expressly provided, such
     action shall become effective when such instrument or instruments or record
     or both are delivered to the Trustee and, where it is hereby expressly
     required, to the Company.  Such instrument or instruments and any such
     record (and the action embodied therein and evidenced thereby) are herein
     sometimes referred to as the "Act" of the Holders signing such instrument
     or instruments 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 and conclusive in favor of the Trustee and the Company, if
     made in the manner provided in this Section.  The record of any meeting of
     Holders of Securities shall be proved in the manner provided in Section
     1406.

               Without limiting the generality of the foregoing, a Holder,
     including a Depositary that is a Holder of a Global Security, may make,
     give or take, by a proxy, or proxies, duly appointed in writing, any
     request, demand, authorization, direction, notice, consent, waiver or other
     action provided in this Indenture to be made, given or taken by Holders,
     and a Depositary that is a Holder of a Global Security may provide its
     proxy or proxies to the beneficial owners of interest in any such Global
     Security.

               (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
<PAGE>
 
                                       15

     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 manner which the Trustee deems sufficient.

               (c)  The ownership of 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 Company may assume that such ownership of any Bearer Security continues
     until (1) another certificate or affidavit bearing a later date issued in
     respect of the same Bearer Security is produced, or (2) such Bearer
     Security is produced to the Trustee by some other Person, or (3) such
     Bearer Security is surrendered in exchange for a Registered Security, or
     (4) such Bearer Security is no longer outstanding.  The ownership of Bearer
     Securities may also be proved in any other manner that the Trustee deems
     sufficient.

               (e)  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 Company in reliance thereon, whether or not
     notation of such action is made upon such Security.

     Section 105.  Notices, Etc. to Trustee and Company.
                   ------------------------------------ 

               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 Company shall be sufficient
     for every purpose hereunder (unless otherwise herein expressly provided) if
     made, given, furnished or filed in writing to or with the Trustee at its
     Corporate Trust Office, Attention: Corporate Trust and Agency Group, or
         
          (2)  the Company by the Trustee or by any Holder shall be sufficient
     for every purpose hereunder (unless otherwise herein expressly provided) if
     made, given, furnished or filed in writing to or with the Company by first
     class mail, facsimile or overnight courier, at the address of its principal
     office specified in the first paragraph of this instrument or at any other
     address previously furnished in writing to the Trustee by the Company.     
<PAGE>
 
                                       16

Section 106.  Notice to Holders; Waiver.
              ------------------------- 

          Where this Indenture provides for notice of any event to Holders of
Registered Securities by the Company 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 The City
of New York 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 Holders 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 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
<PAGE>
 
                                       17

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 Company 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 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 laws of the State of New York.  This Indenture
is subject to the provisions of the Trust Indenture Act 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 of this Section), payment of principal
(or premium, if any) or interest, if any, need not be made at such Place of
Payment on such date, but may be made on the next succeeding Business Day at
such Place of Payment with the same force and effect as if made on the Interest
Payment Date, Redemption Date, Repayment Date or 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.
<PAGE>
 
                                       18

Section 113.  Obligations of the Company Not Obligations of the Trustee.
              --------------------------------------------------------- 

          Notwithstanding anything contained in this Indenture to the contrary,
in no event shall Bankers Trust Company have any liability for the
representations, warranties, covenants, agreements or other obligations of the
Company hereunder or in any of the certificates, notices or agreements of the
Company delivered pursuant hereto, as to all of which recourse shall be had
solely to the assets of the Company, and under no circumstances shall Bankers
Trust Company be personally liable for the payment of any indebtedness or
expenses of the Company; provided, however, that nothing in this Section shall
affect obligations of the Company to the Trustee as set forth in Section 606,
subject to the exceptions thereto and limitations thereon.

                                  ARTICLE TWO

                                 Security Forms

Section 201.  Forms Generally.
              --------------- 

          The Registered Securities, if any, of such 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 Company 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.  If the form of Securities of any series is
established by action taken pursuant to a Board Resolution, a copy of an
appropriate record of such action shall be certified by the Secretary or an
Assistant Secretary of the Company and delivered to the Trustee at or prior to
the delivery of the Company Order contemplated by Section 303 for the
authentication and delivery of such Securities.

          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.

Section 202.  Form of Trustee's Certificate of Authentication.
              ----------------------------------------------- 

          Subject to Section 611, the Trustee's certificates of authentication
shall be in substantially the following form:
<PAGE>
 
                                       19

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


                                    BANKERS TRUST COMPANY, as Trustee


                                By
                                  -----------------------------------
                                     Authorized Officer


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 Company 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 Company Order.  If a Company Order pursuant to Section 303 or 304 has
been, or simultaneously is, delivered, any instructions by the Company 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 additional 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 Company and the Company 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 premium,
if any) and interest, if any, on any Security in permanent global form shall be
made to the Person or Persons specified therein.

          Notwithstanding the provisions of Section 309 and except as provided
in the preceding paragraph, the Company, the Trustee and any agent of the
Company and the
<PAGE>
 
                                       20

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 Company 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 1705;

          (3)  the date or dates, or the method by which such date or dates will
     be determined or extended, 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 calculation agent, if any, 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, if applicable, extended or deferred, 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 such interest shall be calculated if
     other than that of a 360-day year of twelve 30-day months;     
<PAGE>
 
                                       21

          (5) the place or places, if any, other than or in addition to the
     Borough of Manhattan, The City of New York, where the principal of (and
     premium, if any) and interest, if any, on Securities of the series shall be
     payable, where any Registered Securities of the series may be surrendered
     for registration of transfer, where Securities of that series that are
     convertible or exchangeable may be surrendered for conversion or exchange,
     as applicable, and where notices or demands to or upon the Company 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 on in part, at the option of the
     Company, if the Company is to have the option;

          (7)  the obligation, if any, of the Company to redeem, repay or
     purchase Securities of the series pursuant to any sinking fund or analogous
     provisions or at the option of a Holder thereof, and the period or periods
     within which 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 denomination or denominations in which any Registered
     Securities of the series shall be issuable and, if other than denominations
     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 the method by which such portion shall be determined;

          (11)  if other than Dollars, the currency or currencies, currency unit
     or units or composite currency or currencies in which payment of the
     principal of (and premium, if any) or interest, if any, on the Securities
     of the series shall be payable or in which the Securities of the series
     shall be denominated and the particular provisions applicable thereto in
     accordance with, in addition to or in lieu of any of the provisions of
     Section 312, including the manner of determining the equivalent thereof in
     the currency of the United States of America for purposes of the definition
     of "Outstanding" in Section 101;
         
          (12)  whether the amount of payments of principal of (or premium, if
     any) and/or interest, if any, on the Securities of the series may be
     determined with reference to an index, formula or other method,     
<PAGE>
 
                                       22
         
     and the manner in which such amounts shall be determined;      

          (13)  whether the principal of (or premium, if any) or interest, if
     any, on the Securities of the series are to be payable, at the election of
     the Company 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 (including the Currency Election Date), and the terms and
     conditions upon which, such election may be made, and the time and manner
     of 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, in each case in accordance
     with, in addition to or in lieu of any of the provisions of Section 312;

          (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 (including any deletions from, modifications of or
     additions to any of the provisions of Section 1009) of the Company 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 depository 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 the 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
<PAGE>
 
                                       23

     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 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 1302 and/or 1303 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 Thirteen;

          (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)  if the Securities of the series are to be issued upon the
     exercise of warrants or upon the conversion or exchange of other
     securities, the time, manner and place for such Securities to be
     authenticated and delivered;

          (22)  whether, under what circumstances and the currency or
     currencies, currency unit or units or composite currency or currencies in
     which, the Company will pay Additional Amounts as contemplated by Section
     1004 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 Company will have the option to redeem such Securities rather
     than pay such Additional Amounts (and the terms of any such option);

          (23)  the designation of the initial Exchange Rate Agent, if any;

          (24)  if the Securities of the series are to be exchangeable for any
     securities of any Person (including the Company), the terms and conditions
     upon which such Securities will be so exchangeable and the applicability,
     if any, of Article Fifteen 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 Fifteen; and

          (25)  any other terms of the series (which terms shall not be
     inconsistent with the provisions of this Indenture or the requirements of
     the Trust Indenture Act).

          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 Officers' 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.
<PAGE>
 
                                       24

          If any of the terms of the Securities of a 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 Company and delivered to the Trustee at or prior to the
delivery of the Officers' Certificate setting forth the terms of the Securities
of such series.

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 Company by its Chairman of the Board, or one of its Vice
Chairman of the Board, its President or one of its Vice Presidents, under its
corporate seal reproduced thereon, and attested by its Secretary or one of its
Assistant Secretaries.  The signature of any of these officers 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 and coupons.

          Securities or coupons bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company shall bind
the Company, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such 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 Company may deliver Securities of any series together with
any coupon appertaining thereto, executed by the Company to the Trustee for
authentication, together with a Company Order for the authentication and
delivery of such Securities, and the Trustee upon receipt of and in accordance
with the Company 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 in the form set forth in
Exhibit A-1 to this Indenture, 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
<PAGE>
 
                                       25

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 cancelled.  If not all the
Securities of any series are to be issued at one time and if the Board
Resolution or supplemental indenture establishing such series shall so permit,
such Company Order may set forth procedures acceptable to the Trustee for the
issuance of such Securities and determining terms of particular Securities of
such series, such as interest rate, 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
Sections 315(a) through 315(d)) shall be fully protected in relying upon,

          (i)    an Opinion of Counsel stating,

               (a)  that the form or forms of such Securities and any coupons
          have been established in conformity with the provisions of this
          Indenture;
              
               (b)  that the terms of such Securities and any coupons have been
          established in conformity with the provisions of this Indenture; and
               
               (c)  that such Securities, together with any coupons appertaining
          thereto, when completed by appropriate insertions and executed and
          delivered by the Company 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 Company in
          the manner and subject to any conditions specified in such Opinion of
          Counsel, will constitute the legal, valid and binding obligations of
          the Company, 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, to general equitable principles and to such
          other qualifications as such counsel shall conclude do not materially
          affect the rights of Holders of such Securities and any coupons; and

          (ii)  an Officers' Certificate stating, to the best of the knowledge
     of the signers of such certificate, that no Event of Default with respect
     to any of the Securities shall have occurred and be continuing.

          Notwithstanding the provisions of Section 301 and of the preceding two
paragraphs, if not all the Securities of any series are to be issued at one
time, it shall not be necessary to deliver the Officers' Certificate otherwise
required pursuant to Section 301 or the Company Order and Opinion of Counsel
otherwise required pursuant to the preceding two paragraphs prior to or at the
time of issuance of each Security, but such documents shall be delivered prior
to or at the time of issuance of the first Security of such series.
<PAGE>
 
                                       26

          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 generality of the foregoing, the Trustee will not be required to
authenticate Securities denominated in a Foreign Currency if the Trustee
reasonably believes that it would be unable to perform its duties with respect
to such Securities.

          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 a Responsible Officer, 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 Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 310 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
Company, 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 Company may execute, and upon Company 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 coupon 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 the provisions of the following paragraphs), if
temporary Securities of any series are issued, the Company 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 Company 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
<PAGE>
 
                                       27

series (accompanied by any unmatured coupons appertaining thereto), the Company
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 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.  If temporary Securities or any series are issued in global form,
any 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 "Temporary/Definitive Exchange Date"), the Company shall deliver
to the Trustee definitive Securities, in aggregate principal amount equal to the
principal amount of such temporary global Security, executed by the Company.  On
or after the Temporary/Definitive Exchange Date, such temporary global Security
shall be surrendered by the Common Depositary to the Trustee, as the Company'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
Temporary/Definitive 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 Temporary/Definitive 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
<PAGE>
 
                                       28

Temporary/Definitive 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
Temporary/Definitive Exchange Date, copies of which 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 Temporary/Definitive 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 form 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 the Persons who are the
beneficial owners of such temporary global Security on such Interest Payment
Date and who have each delivered to Euroclear or CEDEL, as the case may be, a
certificate dated no earlier than 15 days prior to the Interest Payment Date
occurring prior to such Temporary/Definitive Exchange Date 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).  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 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 Temporary/Definitive
Exchange Date or the date of certification if such date occurs after the
Temporary/Definitive Exchange Date, without further act or deed by such
beneficial owners.  Except as otherwise provided in this paragraph, no payments
of principal (or premium, if any) 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
immediately prior to the expiration of two years after such Interest Payment
Date in order to be repaid to the Company.
<PAGE>
 
                                       29

Section 305.  Registration, Registration of Transfer and Exchange.
              --------------------------------------------------- 

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

          Upon surrender for registration of transfer of any Registered Security
of any series at the office or agency in a Place of Payment for that series, the
Company shall execute, and the Trustee shall authenticate and deliver, in the
name of the designated transferee, 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.

          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 and of a like aggregate principal amount, upon surrender
of the Registered Securities to be exchanged at such office or agency.  Whenever
any Registered Securities are so surrendered for exchange, the Company 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) expressly permitted in or pursuant to 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 denomination 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 Company in an amount equal to the face amount
of such missing coupon or coupons, or the surrender of such missing coupon or
coupons may be waived by the Company and the Trustee if there 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,
<PAGE>
 
                                       30

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 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 Company
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 any beneficial owner of an interest in a
permanent global Security is 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 Company shall
deliver to the Trustee definitive Securities in aggregate principal amount equal
to the principal amount of such beneficial owner's interest in such permanent
global Security, executed by the Company.  On or after the earliest date on
which such interests may be so exchanged, such permanent global Security shall
be surrendered by the Common Depositary or such other depositary as shall be
specified in the Company Order with respect thereto to the Trustee, as the
Company'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 permanent 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
permanent global Security to be exchanged which, unless the Securities of the
series are not issuable both as Bearer Securities and as Registered Securities,
as specified as contemplated by Section 301, shall be in the form of Bearer
Securities or Registered Securities, or any combination thereof, as shall be
specified by the beneficial owner thereof; 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
<PAGE>
 
                                       31

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 Company, 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 Company or
the Security Registrar) be duly endorsed, or be accompanied by a written
instrument of transfer in form satisfactory to the Company 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 or redemption of Securities, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection with any registration of transfer or exchange of Securities, other
than exchanges pursuant to Section 304, 906, 1107 or 1305 not involving any
transfer.

          The Company 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
the day of the selection for redemption of Securities of that series under
Section 1103 or 1203 and ending at the close of business on (A) if Securities of
the series are issuable only as Registered Securities, the day of the mailing of
the relevant notice of redemption and (B) if Securities of the series are
issuable as Bearer Securities, the day of the first publication of the relevant
notice of redemption or, if Securities of the series are also issuable as
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 the
unredeemed portion of any Security being redeemed in part, or (iii) to exchange
any Bearer Security so selected for redemption except that such a Bearer
Security may be exchanged for a Registered Security of 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.
<PAGE>
 
                                       32

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, the Company shall execute and
the Trustee shall authenticate and deliver in exchange therefor a new Security
of the same series and of like tenor and principal amount 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 Company 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 Company or the Trustee that such Security or coupon has been
acquired by a bona fide purchaser, the Company 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 Company in its discretion may, instead
of issuing a new Security, with coupons corresponding to the coupons, if any,
appertaining to such mutilated, destroyed, lost or stolen Security or to the
Security to which such mutilated, destroyed, lost or stolen coupons appertains,
pay such Security or coupon; provided, however, that payment of principal of
(and premium, if any) and interest, if any, on 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.

          Upon the issuance of any new Security under this Section, the Company
may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) 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 Company,
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.
<PAGE>
 
                                       33

          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; Optional Interest
              -----------------------------------------------------------------
Reset.
- - ----- 

          (a)   Except as otherwise provided as contemplated by Section 301 with
respect to any series of Securities, interest on any Registered Security which
is payable, and is punctually paid or duly provided for, on any Interest Payment
Date shall be paid to the Person in whose name such 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 Company maintained
for such purpose pursuant to Section 1002; provided, however, that each
installment of interest on any Registered Security may at the Company'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 309, to the address of
such Person as it appears on the Security Register or (ii) transfer to an
account maintained by the payee located in 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 each of Euroclear and CEDEL with respect
to that portion of such permanent global Security held for its account by the
Common Depositary, for the purpose of permitting each of Euroclear and CEDEL 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 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 thereto on the
relevant Regular Record Date by virtue of having been such Holder, and such
Defaulted Interest may be paid by the Company, at its election in each case, as
provided in clause (1) or (2) below:
<PAGE>
 
                                       34

          (1) The Company may elect to make payment of any Defaulted Interest to
     the Persons in whose names the Registered Securities of such series (or
     their respective Predecessor Securities) are registered at the close of
     business on a Special Record Date for the payment of such Defaulted
     Interest, which shall be fixed in the following manner.  The Company shall
     notify the Trustee in writing of the amount of Defaulted Interest proposed
     to be paid on each Registered Security of such series and the date of the
     proposed payment (which shall not be less than 20 days after such notice is
     received by the Trustee), and at the same time the Company 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 and except, if applicable, as
     provided in Sections 312(b), 312(d) and 312(e)) equal to the aggregate
     amount proposed to be paid in respect of such Defaulted Interest or shall
     make arrangements satisfactory to the Trustee for such deposit prior to the
     date of the proposed payment, such money 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
     Company of such Special Record Date and, in the name and at the expense of
     the Company, shall cause notice of the proposed payment of such Defaulted
     Interest and the Special Record Date therefor to be mailed, first-class
     postage prepaid, to each Holder of Registered Securities of such series at
     his address as it appears in the Security Register, not less than 10 days
     prior to such Special Record Date.  Notice of the proposed payment of such
     Defaulted Interest and the Special Record Date therefor having been so
     mailed, such Defaulted Interest shall be paid to the Persons in whose names
     the Registered Securities of such series (or their respective Predecessor
     Securities) are registered at the close of business on such Special Record
     Date and shall no longer be payable pursuant to the following clause (2).
     In case a Bearer Security of any series is surrendered at the office or
     agency in a Place of Payment for such series in exchange for a Registered
     Security of such series after the close of business at such office or
     agency on any Special Record Date and before the opening of business at
     such office or agency on the related proposed date for payment of Defaulted
     Interest, such Bearer Security shall be surrendered without the coupon
     relating to such proposed date of payment and Defaulted Interest will not
     be payable on such proposed date of payment in respect of the Registered
     Security  issued in exchange for such Bearer Security, but will be payable
     only to the Holder of such coupon when due in accordance with the
     provisions of this Indenture.

          (2)  The Company may make payment of any Defaulted Interest on the
     Registered Securities of any series in any other lawful manner not
     inconsistent with the requirements of any securities exchange on which such
     Securities may be listed, and upon such notice as may be required by such
     exchange, if, after notice given by the Company to the Trustee of the
     proposed payment pursuant to this clause, such manner of payment shall be
     deemed acceptable to the Trustee.
<PAGE>
 
                                       35

          (b)  The provisions of this Section 307(b) may be made applicable to
any series of Securities pursuant to Section 301 (with such modifications,
additions or substitutions as may be specified pursuant to such Section 301).
The interest rate (or the spread or spread multiplier used to calculate such
interest rate, if applicable) on any Security of such series may be reset by the
Company on the date or dates specified on the face of such Security (each an
"Optional Reset Date").  The Company may exercise such option with respect to
such Security by notifying the Trustee of such exercise at least 50 but not more
than 60 days prior to an Optional Reset Date for such Note.  Not later than 40
days prior to each Optional Reset Date, the Trustee shall transmit, in the
manner provided for in Section 106, to the Holder of any such Security a notice
(the "Reset Notice") indicating whether the Company has elected to reset the
interest rate (or the spread or spread multiplier used to calculate such
interest rate, if applicable), and if so (i) such new interest rate (or such new
spread or spread multiplier, if applicable) and (ii) the provisions, if any, for
redemption during the period from such Optional Reset Date to the next Optional
Reset Date or if there is no such next Optional Reset Date, to the Stated
Maturity Date of such Security (each such period a "Subsequent Interest
Period"), including the date or dates on which or the period or periods during
which and the price or prices at which such redemption may occur during the
Subsequent Interest Period.

          Notwithstanding the foregoing, not later than 20 days prior to the
Optional Reset Date, the Company may, at its option, revoke the interest rate
(or the spread or spread multiplier used to calculate such interest rate, if
applicable) provided for in the Reset Notice and establish an interest rate (or
a spread or spread multiplier used to calculate such interest rate, if
applicable) that is higher than the interest rate (or the spread or spread
multiplier, if applicable) provided for in the Reset Notice, for the Subsequent
Interest Period by causing the Trustee to transmit, in the manner provided for
in Section 106, notice of such higher interest rate (or such higher spread or
spread multiplier, if applicable) to the Holder of such Security.  Such notice
shall be irrevocable.  All Securities with respect to which the interest rate
(or the spread or spread multiplier used to calculate such interest rate, if
applicable) is reset on an Optional Reset Date, and with respect to which the
Holders of such Securities have not tendered such Securities for repayment (or
have validly revoked any such tender) pursuant to the next succeeding paragraph,
will bear such higher interest rate (or such higher spread or spread multiplier,
if applicable).

          The Holder of any such Security will have the option to elect
repayment by the Company of the principal of such Security on each Optional
Reset Date at a price equal to the principal amount thereof plus interest
accrued to such Optional Reset Date.  In order to obtain repayment on an
Optional Reset Date, the Holder must follow the procedures set forth in Article
Thirteen for repayment at the option of Holders except that the period for
delivery or notification to the Trustee shall be at least 25 but not more than
35 days prior to such Optional Reset Date and except that, if the Holder has
tendered any Security for repayment pursuant to the Reset Notice, the Holder
may, by written notice to the Trustee, revoke such tender or repayment until the
close of business on the tenth day before such Optional Reset Date.

          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
<PAGE>
 
                                       36

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.  Optional Extension of Maturity.
              ------------------------------ 

          The provisions of this Section 308 may be made applicable to any
series of Securities pursuant to Section 301 (with such modifications, additions
or substitutions as may be specified pursuant to such Section 301).  The Stated
Maturity of any Security of such series may be extended at the option of the
Company for the period or periods specified on the face of such Security (each
an "Extension Period") up to but not beyond the date (the "Final Maturity") set
forth on the face of such Security.  The Company may exercise such option with
respect to any Security by notifying the Trustee of such exercise at least 50
but not more than 60 days prior to the Stated Maturity of such Security in
effect prior to the exercise of such option (the "Original Stated Maturity").
If the Company exercises such option, the Trustee shall transmit, in the manner
provided for in Section 106, to the Holder of such Security not later than 40
days prior to the Original Stated Maturity a notice (the "Extension Notice")
indicating (i) the election of the Company to extend the Stated Maturity, (ii)
the new Stated Maturity, (iii) the interest rate, if any, applicable to the
Extension Period and (iv) the provisions, if any, for redemption during such
Extension Period.  Upon the Trustee's transmittal of the Extension Notice, the
Stated Maturity of such Security shall be extended automatically and, except as
modified by the Extension Notice and as described in the next paragraph, such
Security will have the same terms as prior to the transmittal of such Extension
Notice.

          Notwithstanding the foregoing, not later than 20 days before the
Original Stated Maturity of such Security, the Company may, at its option,
revoke the interest rate provided for in the Extension Notice and establish a
higher interest rate for the Extension Period by causing the Trustee to
transmit, in the manner provided for in Section 106, notice of such higher
interest rate to the Holder of such Security.  Such notice shall be irrevocable.
All Securities with respect to which the Stated Maturity is extended will bear
such higher interest rate.

          If the Company extends the Maturity of any Security, the Holder will
have the option to elect repayment of such Security by the Company on the
Original Stated Maturity at a price equal to the principal amount thereof, plus
interest accrued to such date.  In order to obtain repayment on the Original
Stated Maturity once the Company has extended the Maturity thereof, the Holder
must follow the procedures set forth in Article Seventeen for repayment at the
option of Holders, except that the period for delivery or notification to the
Trustee shall be at least 25 but not more than 35 days prior to the Original
Stated Maturity and except that, if the Holder has tendered any Security for
repayment pursuant to an Extension Notice, the Holder may by written notice to
the Trustee revoke such tender for repayment until the close of business on the
tenth day before the Original Stated Maturity.

Section 309.  Persons Deemed Owners.
              --------------------- 

          Prior to due presentment of a Registered Security for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person
<PAGE>
 
                                       37

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, if any, on such Registered
Security and for all other purposes whatsoever, whether or not such Registered
Security be overdue, and neither the Company, the Trustee nor any agent of the
Company or the Trustee shall be affected by notice to the contrary.

          Title to any Bearer Security and any coupons appertaining thereto
shall pass by delivery.  The Company, the Trustee and any agent of the Company
or the Trustee may treat the bearer of any Bearer Security and the bearer of any
coupon as the absolute owner of such 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 coupons be overdue, and neither the
Company, the Trustee nor any agent of the Company or the Trustee shall be
affected by notice to the contrary.

          None of the Company, the Trustee, any Paying Agent or the Security
Registrar will have any responsibility or liability for any aspect of the
records relating to or payments made on account of beneficial ownership
interests of a Security in global form or for maintaining, supervising or
reviewing any records relating to such beneficial ownership interests.

          Notwithstanding the foregoing, with respect to any global Security,
nothing herein shall prevent the Company, the Trustee, or any agent of the
Company 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 310.  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 cancelled by it.  The Company may at any time
deliver to the Trustee for cancellation any Securities previously authenticated
and delivered hereunder which the Company 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 Company has not issued and sold, and all Securities so
delivered shall be promptly cancelled by the Trustee.  If the Company 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
cancelled as provided in this Section, except as expressly permitted by this
Indenture.  Cancelled Securities and coupons held by the Trustee shall be
destroyed by the Trustee, in its customary manner and the
<PAGE>
 
                                       38

Trustee shall deliver a certificate of such destruction to the Company, unless
by a Company Order the Company directs their return to it within 30 days after
such securities have been delivered to the Trustee for such purpose.  The
Trustee shall not be required to hold cancelled securities for more than one
year.

Section 311.  Computation of Interest.
              ----------------------- 

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

Section 312.  Currency and Manner of Payments in Respect of Securities.
              -------------------------------------------------------- 

          (a)  Unless otherwise specified with respect to any Securities
pursuant to Section 301, with respect to Registered Securities of any series not
permitting the election provided for in paragraph (b) below or the Holders of
which have not made the election provided for in paragraph (b) below, and with
respect to Bearer Securities of any series, except as provided in paragraph (d)
below, payment of the principal of (and premium, if any, on) and interest, if
any, on any Registered or Bearer Security of such series will be made in the
currency or currencies in which such Registered Security or Bearer Security, as
the case may be, is payable.  The provisions of this Section 312 may be modified
or superseded with respect to any Securities pursuant to Section 301.

          (b)  It may be provided pursuant to Section 301 with respect to
Registered Securities of any series that Holders shall have the option, subject
to paragraphs (d) and (e) below, to receive payments of principal of (and
premium, if any, on) or interest, if any, on such Registered Securities in any
of the currencies, currency units or composite currencies which may be
designated for such election by delivering to the Trustee for such series of
Registered Securities a written election with signature guarantees and in the
applicable form established pursuant to Section 301, not later than the close of
business on the Currency Election Date immediately preceding the applicable
payment date.  If a Holder so elects to receive such payments in any such
currency, currency unit or composite currency, such election will remain in
effect for such Holder or any transferee of such Holder until changed by such
Holder or such transferee by written notice to the Trustee for such series of
Registered Securities (but any such change must be made not later than the close
of business on the Currency Election Date immediately preceding the next payment
date to be effective for the payment to be made on such payment date and no such
change of election may be made with respect to payments to be made on any
Registered Security of such series with respect to which an Event of Default has
occurred or with respect to which the Company has deposited funds pursuant to
Article Four or Fourteen or with respect to which a notice of redemption has
been given by the Company or a notice of option to elect repayment has been sent
by such Holder or such transferee).  Any Holder of any such Registered Security
who shall not have delivered any such election to the Trustee of such series of
Registered Securities not later than the close of business on the applicable
Currency Election Date will be paid the amount due on the applicable payment
date in the relevant currency or currencies as provided in Section 312(a).  The
Trustee for each such series of Registered Securities shall notify the Exchange
Rate Agent as soon as practicable after the Currency Election Date
<PAGE>
 
                                       39

of the aggregate principal amount of Registered Securities for which Holders
have made such written election.
    
          (c)  Unless otherwise specified pursuant to Section 301, if the
election referred to in paragraph (b) above has been provided for pursuant to
Section 301, then, unless otherwise specified pursuant to Section 301, not later
than the fourth Business Day after the Currency Election Date for each payment
date for Registered Securities of any series, the Exchange Rate Agent will
deliver to the Company a written notice specifying, in the currency or
currencies, currency unit or units or composite currency or currencies in which
Registered Securities of such series are payable, the respective aggregate
amounts of principal of (and premium, if any, on) and interest, if any, on the
Registered Securities to be paid on such payment date, specifying the amounts in
such currency or currencies, currency unit or units or composite currency or
currencies so payable in respect of the Registered Securities as to which the
Holders of Registered Securities denominated in any currency or currencies,
currency unit or units or composite currency or currencies shall have elected to
be paid in another currency, currency unit or composite currency as provided in
paragraph (b) above.  If the election referred to in paragraph (b) above has
been provided for pursuant to Section 301 and if at least one Holder has made
such election, then, unless otherwise specified pursuant to Section 301, on the
second Business Day preceding such payment date the Company will deliver to the
Trustee for such series of Registered Securities an Exchange Rate Officer's
Certificate in respect of the Dollar or Foreign Currency payments to be made on
such payment date.  Unless otherwise specified pursuant to Section 301, the
Dollar, Foreign Currency or currencies, ECU or currency unit amount receivable
by Holders of Registered Securities who have elected payment in a currency or
currency unit as provided in paragraph (b) above shall be determined by the
Company on the basis of the applicable Market Exchange Rate in effect on the
second Business Day (the "Valuation Date") immediately preceding each payment
date, and such determination shall be conclusive and binding for all purposes,
absent manifest error.      

          (d)  If a Currency Conversion Event occurs with respect to a Foreign
Currency, the ECU or any other currency unit in which any of the Securities are
denominated or payable other than pursuant to an election provided for pursuant
to paragraph (b) above, then with respect to each date for the payment of
principal of (and premium, if any, on) and interest, if any, on the applicable
Securities denominated or payable in such Foreign Currency, the ECU or such
other currency unit occurring after the last date on which such Foreign
Currency, the ECU or such other currency unit was used (the "Currency Conversion
Date"), the Dollar shall be the Currency of payment for use on each such payment
date.  Unless otherwise specified pursuant to Section 301, the Dollar amount to
be paid by the Company to the Trustee of each series of Securities and by the
Trustee or any Paying Agent to the Holders of such Securities with respect to
such payment date shall be, in the case of a Foreign Currency other than a
currency unit, the Dollar Equivalent of the Foreign Currency or, in the case of
a currency unit, the Dollar Equivalent of the Currency Unit, in each case as
determined by the Exchange Rate Agent in the manner provided in paragraph (f) or
(g) below.

          (e)  Unless otherwise specified pursuant to Section 301, if the Holder
of a Registered Security denominated in any currency or currencies, currency
unit or units or
<PAGE>
 
                                       40

composite currency or currencies shall have elected to be paid in another
currency or currencies, currency unit or units or composite currency or
currencies as provided in paragraph (b) above, and a Currency Conversion Event
occurs with respect to such elected currency or currencies, currency unit or
units or composite currency or currencies, such Holder shall receive payment in
the currency or currencies, currency unit or units or composite currency or
currencies in which payment would have been made in the absence of such
election; and if a Currency Conversion Event occurs with respect to the currency
or currencies, currency unit or units or composite currency or currencies in
which payment would have been made in the absence of such election, such Holder
shall receive payment in Dollars as provided in paragraph (d) above.

          (f)  The "Dollar Equivalent of the Foreign Currency" shall be
determined by the Exchange Rate Agent and shall be obtained for each subsequent
payment date by converting the specified Foreign Currency into Dollars at the
Market Exchange Rate on the Currency Conversion Date.

          (g)  The "Dollar Equivalent of the Currency Unit" shall be determined
by the Exchange Rate Agent and subject to the provisions of paragraph (h) below
shall be the sum of each amount obtained by converting the Specified Amount of
each Component Currency into Dollars at the Market Exchange Rate for such
Component Currency on the Valuation Date with respect to each payment.

          (h)  For purposes of this Section 312, the following terms shall have
the following meanings:

          A "Component Currency" shall mean any Currency which, on the Currency
     Conversion Date, was a component currency of the relevant currency unit,
     including, but not limited to, the ECU.

          A "Specified Amount" of a Component Currency shall mean the number of
     units of such Component Currency or fractions thereof which were
     represented in the relevant currency unit, including, but not limited to,
     the ECU, on the Currency Conversion Date.  If after the Currency Conversion
     Date the official unit of any Component Currency is altered by way of
     combination or subdivision, the Specified Amount of such Component Currency
     shall be divided or multiplied in the same proportion.  If after the
     Currency Conversion Date two or more Component Currencies are consolidated
     into a single currency, the respective Specified Amounts of such Component
     Currencies shall be replaced by an amount in such single currency equal to
     the sum of the respective Specified Amounts of such consolidated Component
     Currencies expressed in such single currency, and such amount shall
     thereafter be a Specified Amount and such single currency shall thereafter
     be a Component Currency.  If after the Currency Conversion Date any
     Component Currency shall be divided into two or more currencies, the
     Specified Amount of such Component Currency shall be replaced by amounts of
     such two or more currencies, having an aggregate Dollar Equivalent value at
     the Market Exchange Rate on the date of such replacement equal to the
     Dollar Equivalent value of the Specified Amount of such former Component
     Currency at the Market Exchange Rate immediately before such
<PAGE>
 
                                       41

     division, and such amounts shall thereafter be Specified Amounts and such
     currencies shall thereafter be Component Currencies.  If, after the
     Currency Conversion Date of the relevant currency unit, including, but not
     limited to, the ECU, a Currency Conversion Event (other than any event
     referred to above in this definition of "Specified Amount") occurs with
     respect to any Component Currency of such currency unit and is continuing
     on the applicable Valuation Date, the Specified Amount of such Component
     Currency shall, for purposes of calculating the Dollar Equivalent of the
     Currency Unit, be converted into Dollars at the Market Exchange Rate in
     effect on the Currency Conversion Date of such Component Currency.

          "Currency Election Date" shall mean the date for any series of
     Registered Securities as specified pursuant to clause (13) of Section 301
     by which the written election referred to in paragraph (b) above may be
     made.

          All decisions and determinations of the Exchange Rate Agent regarding
the Dollar Equivalent of the Foreign Currency, the Dollar Equivalent of the
Currency Unit, the Market Exchange Rate and changes in the Specified Amounts as
specified above shall be in its sole discretion and shall, in the absence of
manifest error, be conclusive for all purposes and irrevocably binding upon the
Company, the Trustee and all Holders of such Securities denominated or payable
in the relevant currency.  The Exchange Rate Agent shall promptly give written
notice to the Company and the Trustee of any such decision or determination.

          In the event that the Company determines in good faith that a Currency
Conversion Event has occurred with respect to a Foreign Currency, the Company
will immediately give written notice thereof to the Trustee and to the Exchange
Rate Agent (and upon receipt thereof the Trustee will promptly thereafter give
notice in the manner provided for in Section 106 to the affected Holders)
specifying the Currency Conversion Date.  In the event the Company so determines
that a Currency Conversion Event has occurred with respect to the ECU or any
other currency unit in which Securities are denominated or payable, the Company
will immediately give written notice thereof to the Trustee and to the Exchange
Rate Agent (and upon receipt thereof the Trustee will promptly thereafter give
notice in the manner provided for in Section 106 to the affected Holders)
specifying the Currency Conversion Date and the Specified Amount of each
Component Currency on the Currency Conversion Date.  In the event the Company
determines in good faith that any subsequent change in any Component Currency as
set forth in the definition of Specified Amount above has occurred, the Company
will similarly give written notice to the Trustee and the Exchange Rate Agent.

          The Trustee shall be fully justified and protected in relying and
acting upon information received by it from the Company and the Exchange Rate
Agent and shall not otherwise have any duty or obligation to determine the
accuracy or validity of such information.
<PAGE>
 
                                       42

Section 313.  Appointment and Resignation of Successor Exchange Rate Agent.
              ------------------------------------------------------------ 

          (a)  Unless otherwise specified pursuant to Section 301, if and so
long as the Securities of any series (i) are denominated in a currency other
than Dollars or (ii) may be payable in a currency other than Dollars, or so long
as it is required under any other provision of this Indenture, then the Company
will maintain with respect to each such series of Securities, or as so required,
at least one Exchange Rate Agent.  The Company will cause the Exchange Rate
Agent to make the necessary foreign exchange determinations at the time and in
the manner specified pursuant to Section 301 for the purpose of determining the
applicable rate of exchange and, if applicable, for the purpose of converting
the issued currency into the applicable payment currency for the payment of
principal (and premium, if any) and interest, if any, pursuant to Section 312.

          (b)  No resignation of the Exchange Rate Agent and no appointment of a
successor Exchange Rate Agent pursuant to this Section shall become effective
until the acceptance of appointment by the successor Exchange Rate Agent as
evidenced by a written instrument delivered to the Company and the Trustee.

          (c)  If the Exchange Rate Agent shall resign, be removed or become
incapable of acting, or if a vacancy shall occur in the office of the Exchange
Rate Agent for any cause, with respect to the Securities of one or more series,
the Company, by or pursuant to a Board Resolution, shall promptly appoint a
successor Exchange Rate Agent or Exchange Rate Agents with respect to the
Securities of that or those series (it being understood that any such successor
Exchange Rate Agent may be appointed with respect to the Securities of one or
more or all of such series and that, unless otherwise specified pursuant to
Section 301, at any time there shall only be one Exchange Rate Agent with
respect to the Securities of any particular series that are originally issued by
the Company on the same date and that are initially denominated and/or payable
in the same currency or currencies, currency unit or units or composite currency
or currencies).
    
Section 314.  CUSIP Numbers.
              -------------

          The Company in issuing the Securities may use "CUSIP" numbers (if then
generally in use), and, if so, the Trustee shall indicate the "CUSIP" numbers of
the Securities in notices of redemption as a convenience to Holders; provided 
that any such notice may state that no representation is made as to the 
correctness of such numbers either as pointed on the Securities or as contained 
in any notice of redemption.      


                                  ARTICLE FOUR

                           Satisfaction and Discharge

Section 401.  Satisfaction and Discharge of Indenture.
              --------------------------------------- 

          This Indenture shall upon Company Request cease to be of further
effect with respect to any series of Securities specified in such Company
Request  (except as to any surviving rights of registration of transfer or
exchange of Securities of such series expressly provided for herein or pursuant
hereto and any right to receive Additional Amounts, as provided in Section
1004), and the Trustee, upon receipt of a Company Order, and at the expense of
the Company, shall execute proper instruments acknowledging satisfaction and
discharge of this Indenture as to such series, when

          (1)  either
<PAGE>
 
                                       43

               (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 with the Trustee or any Paying
          Agent or segregated and held in trust by the Company and thereafter
          repaid to the Company, 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 Company, 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
               Company,

          and the Company, 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 such 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, if any, 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;

          (2)  the Company has paid or caused to be paid all other sums payable
     hereunder by the Company; and

          (3)  the Company has delivered to the Trustee an Officers' Certificate
     and an Opinion of Counsel, each stating that all conditions precedent
     herein provided for  relating to the satisfaction and discharge of this
     Indenture as to such series have been complied with.
<PAGE>
 
                                       44

          Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee and any predecessor Trustee under
Section 607, the obligations of the Company to any Authenticating Agent under
Section 611 and, if money shall have been deposited with 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 Money.
              -------------------------- 

          Subject to 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 Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal (and premium, if
any) and interest, if any, 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 Securities of
any series, means any one of the following events (whatever the reason for such
Event of Default and whether it shall be occasioned by the provisions of Article
Thirteen or 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)  the entry by a court having jurisdiction in the premises of (A) a
     decree or order for relief in respect of the Company in an involuntary case
     or proceeding under any applicable Federal or State bankruptcy, insolvency,
     reorganization or other similar law or (B) a decree or order under any
     applicable Federal or State law appointing a receiver or other similar
     official (other than a conservator) of a Major Bank or (C) a decree or
     order adjudging the Company a bankrupt or insolvent, or approving as
     properly filed a petition seeking reorganization, arrangement, adjustment
     or composition of or in respect of the Company under any applicable Federal
     or State law, or appointing a custodian, receiver, liquidator, assignee,
     trustee, sequestrator or other similar official of the Company or
     substantially all of its assets (other than the appointment of a
     conservator with respect to any depository institution Subsidiary of the
     Company insured by the FDIC) or ordering the winding up or liquidation of
     its affairs, and the continuance of any such decree or order for relief or
     any such other decree or order unstayed and in effect for a period of 60
     consecutive days; or
<PAGE>
 
                                       45

          (2) the commencement by the Company of a voluntary case or proceeding
     under any applicable Federal or State bankruptcy, insolvency,
     reorganization or other similar law, or the consent by it to the entry of a
     decree or order for relief in respect of the Company in an involuntary case
     or proceeding under any applicable Federal or State bankruptcy, insolvency,
     reorganization or other similar law or to the commencement of any
     bankruptcy or insolvency case or proceeding against it, or the filing by it
     of a petition or answer or consent seeking reorganization or relief under
     any applicable Federal or State law, or the consent by it to the filing of
     such petition or to the appointment of or taking possession by a custodian,
     receiver, liquidator, assignee, trustee, sequestrator or other similar
     official of the Company or of any substantial part of its property (other
     than the appointment of a conservator with respect to any depository
     institution Subsidiary of the Company insured by the FDIC), or the making
     by it of an assignment for the benefit of creditors, or the admission by it
     in writing of its inability to pay its debts generally as they become due,
     or the taking of corporate action by the Company in furtherance of any such
     action; or

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

Section 502.  Acceleration of Maturity; Rescission and Annulment.
              -------------------------------------------------- 

               If an Event of Default described in clause (1) or (2) of Section
     501 occurs and is continuing, then in every such case the Trustee or the
     Holders of not less than 25% in principal amount of all of the Securities
     then Outstanding may declare the principal amount (or, if any such
     Securities are Original Issue Discount Securities or Indexed Securities,
     such portion of the principal amount as may be specified in the terms of
     that series) of all of the Outstanding Securities to be due and payable
     immediately, by a notice in writing to the Company (and to the Trustee if
     given by the Holders) and upon any such declaration such principal amount
     (or specified portion thereof) shall become immediately due and payable.
     If an Event of Default described in clause (3) of Section 501 with respect
     to Securities of any series at the time Outstanding occurs and is
     continuing, then 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 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 of that series) of
     all of the Securities of that series to be due and payable immediately, by
     a notice in writing to the Company (and to the Trustee if given by
     Holders), and upon any such declaration such principal amount (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 Company and the Trustee, may rescind and annul such
     declaration and its consequences if
<PAGE>
 
                                       46

          (1) the Company has paid or deposited with the Trustee a sum
     sufficient to pay in the currency, 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 and
     except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)):

               (A)  all overdue installments of interest, if any, on 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 of acceleration and any 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 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 non-payment 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 Company covenants that if

          (1)  an Event of Default with respect to any Security of any series
               shall occur,

          (2)  default is made in the payment of any installment of interest, if
               any, on any Security of any series and any related coupon when
               such interest becomes due and payable and such default continues
               for a period of 30 days (whether or not such payment is then
               prohibited by Article XVI),
<PAGE>
 
                                       47

          (3)  default is made in the payment of the principal of (or premium,
               if any, on) any Security at the Maturity thereof (whether or not
               such payment is then prohibited by Article XVI),

          (4)  default is made in the making or satisfaction of any sinking fund
               payment or analogous obligation when the same becomes due
               pursuant to the terms of any Security,

          (5)  default is made in the performance, or breach, of any covenant or
               warranty of the Company in this Indenture (other than a covenant
               or warranty a default in whose performance or whose breach is
               elsewhere in this Section specifically dealt with or which has
               expressly been included in this Indenture solely for the benefit
               of series of Securities other than that series) 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 Company by
               the Trustee or to the Company 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

          (6)  any other default provided with respect to a Security of that
               series is made (each a "Default"),

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Securities of such series and any related coupons, the whole
amount then due and payable on such Securities and any related coupons for
principal, including any sinking fund payment or analogous obligations (and
premium, if any), and interest and, to the extent that payment of such interest
shall be legally enforceable, interest on any overdue principal (and premium, if
any) and on any overdue interest, at the rate or rates prescribed therefor 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 Company fails to pay such amounts forthwith upon such demand,
the Trustee, in its own name and as trustee of an express trust, may institute a
judicial proceeding for the collection of the sums so due and unpaid, may
prosecute such proceeding to judgment or final decree and may enforce the same
against the Company or any other obligor upon such Securities and collect the
moneys adjudged or decreed to be payable in the manner provided by law out of
the property of the Company or any other obligor upon such Securities, wherever
situated.

          If a Default with respect to Securities of any series (or all series,
as the case may be) shall occur and be 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 (or all series, as the case may be) 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
<PAGE>
 
                                       48

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 Company or any other obligor upon the
Securities or the property of the Company 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 Company for the payment of overdue principal, premium, if any,
or interest) shall be entitled and empowered, by intervention in such proceeding
or otherwise, to take any and all actions authorized under the Trust Indenture
Act in order to have claims of the Holders and the Trustee allowed in any such
proceeding and, in particular: (i) to file and prove a claim for the whole
amount (or in the case of Original Issue Discount Securities or Indexed
Securities, such portion of the principal as may be provided for in the terms
thereof) (and premium, if any) and interest, 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 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 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 to
the Trustee or any predecessor Trustee under Section 606.      

          No provision of this Indenture and nothing contained herein 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
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;
provided, however, the Trustee may vote on behalf of the Holders for the
election of a trustee in bankruptcy or similar official and may be a member of a
creditors' or other similar committee.

Section 505.  Trustee May Enforce Claims Without Possession of Securities.
              ----------------------------------------------------------- 

          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
<PAGE>
 
                                       49

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.
              ------------------------------ 

          Subject to Article Sixteen, 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, if any, 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, if any, 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) and
          interest, if any, respectively; and

               THIRD:  To the payment of the remainder, if any, to the Company
          or any other Person or Persons entitled thereto.

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 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 Default in its own
     name as Trustee hereunder;

          (3)  such Holder or Holders have offered to the Trustee security or
     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
<PAGE>
 
                                       50

          (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 and
              ----------------------------------------------------------------
Interest.
- - ---------

          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
Additional Amounts, if any) and (subject to Sections 305 and 307) interest, if
any, on 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 or 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 Company, the Trustee and the Holders of Securities and coupons shall,
subject to any determination in such proceeding, be restored severally and
respectively to their former positions hereunder and thereafter all rights and
remedies of the Trustee and the Holders shall continue as though no such
proceeding had been instituted.

Section 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
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.
<PAGE>
 
                                       51

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.
              ------------------ 

          The Holders of 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 unjustly prejudicial to the Holders of Securities
     of such series not consenting.

Section 513.  Waiver of Past Defaults.
              ----------------------- 

               The Holders of not less than 66 2/3% 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, if any, on 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 such waiver shall extend to any subsequent or
other default or Event of Default or impair any right consequent thereon.
<PAGE>
 
                                       52

Section 514.  Waiver of Stay or Extension Laws.
              -------------------------------- 

          The Company covenants (to the extent that it may lawfully do so) that
it will not at any time insist upon, or plead, or in any manner whatsoever claim
or take the benefit or advantage of, any stay or extension law wherever enacted,
now or at any time hereafter in force, which may affect the covenants or the
performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all 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.


                                  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 a Responsible Officer of 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,
if any, on any Security of such series, or in the payment of any sinking or
purchase fund installment with respect to the Securities of such series, the
Trustee shall be protected in withholding such notice if and so long as the
board of directors, the executive committee or a trust committee of directors
and/or Responsible Officers of the Trustee in good faith determines that the
withholding of such notice is in the 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 503(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 occurrence thereof.  For the purpose of this
Section, the term "default" means any event which is, or after notice or lapse
of time or both would become, a Default with respect to the Securities of such
series.

Section 602.  Certain Rights of Trustee.
              ------------------------- 

          Subject to the provisions of TIA Section 315(a) through 315(d):

          (a)  the Trustee may rely and shall be protected in acting or
     refraining from acting upon any resolution, certificate, statement,
     instrument, opinion, report, notice, request, direction, consent, order,
     bond, debenture, note, coupon or other paper or document believed by it to
     be genuine and to have been signed or presented by the proper party or
     parties;

          (b)  any request or direction of the Company mentioned herein shall be
     sufficiently evidenced by a Company Request or Company Order (other than
<PAGE>
 
                                       53

     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 Directors may be sufficiently evidenced by a
     Board Resolution;
         
          (c)  whenever in the administration of this Indenture the Trustee
     shall deem it desirable that a matter be proved or established prior to
     taking, suffering or omitting any action hereunder, the Trustee (unless
     other evidence be herein specifically prescribed) may, in the absence of
     bad faith on its part, rely upon a Board Resolution, an Opinion of Counsel
     or an Officers' Certificate;      

          (d)  the Trustee may consult with counsel and the advice of such
     counsel (confirmed in writing) or any Opinion of Counsel shall be full and
     complete authorization and protection in respect of any action taken,
     suffered or omitted by it hereunder in good faith and in reliance thereon;

          (e)  the Trustee shall be under no obligation to exercise any of the
     rights or powers vested in it by this Indenture at the request or direction
     of any of the Holders of 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 it against the
     costs, expenses and liabilities which might be incurred by it in compliance
     with such request or direction;

          (f)  the Trustee shall not be bound to make any investigation into the
     facts or matters stated in any resolution, certificate, statement,
     instrument, opinion, report, notice, request, direction, consent, order,
     bond, debenture, note, coupon or other paper or document, but the Trustee,
     in its discretion, may make such further inquiry or investigation into such
     facts or matters as it may see fit, and, if the Trustee shall determine to
     make such further inquiry or investigation, it shall be entitled to examine
     the books, records and premises of the Company, personally or by agent or
     attorney;

          (g)  the Trustee may execute any of the trusts or powers hereunder or
     perform any duties hereunder either directly or by or through agents,
     attorneys, custodians or nominees and the Trustee shall not be responsible
     for the supervision of or any misconduct or negligence on the part of any
     such agent, attorney, custodian or nominee appointed with due care by it
     hereunder; and

          (h)  the Trustee shall not be liable for any action taken, suffered or
     omitted by it in good faith and 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.
<PAGE>
 
                                       54

          The rights and protections afforded to the Trustee by this Indenture
shall also be afforded to it to the extent applicable in its capacity as Paying
Agent, Security Registrar and Exchange Rate Agent, as the case may be.

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 Company, 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 and that the statements made by it in a
Statement of Eligibility on Form T-1 supplied to the Company are true and
accurate, subject to the qualifications set forth therein.  Neither the Trustee
nor any Authenticating Agent shall be accountable for the use or application by
the Company of Securities or the proceeds thereof.

Section 604.  May Hold Securities.
              ------------------- 

          The Trustee, any Authenticating Agent, Paying Agent, Security
Registrar or other agent of the Company, 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 Company with the
same rights it would have if it were not Trustee, Authenticating Agent, Paying
Agent, Security Registrar 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 Company.

Section 606.  Compensation and Reimbursement.
              ------------------------------ 

          The Company agrees:

          (1)  to pay to the Trustee from time to time such compensation for all
     services rendered by it hereunder as has been agreed upon in writing (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),
<PAGE>
 
                                       55

     except to the extent any such expense, disbursement or advance may be
     attributable to its negligence or bad faith; and

          (3)  to indemnify each of the Trustee and any predecessor Trustee (and
     its officers, directors, employees and agents) for, and to hold it harmless
     against, any loss, liability or expense incurred without negligence or bad
     faith on its part, arising out of or in connection with the acceptance or
     administration of 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,
     except to the extent any such loss, liability or expense may be
     attributable to its negligence or bad faith.

          As security for the performance of the obligations of the Company
under this Section, the Trustee shall have a claim 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 (and premium, if any) or interest,
if any, on particular Securities or coupons.

          The Company's payment obligations pursuant to this Section shall
survive the discharge of this Indenture.  When the Trustee incurs expenses after
the occurrence of an Event of Default specified in Section 501(1) or (2) with
respect to the Company, the expenses are intended to constitute expenses of
administration under the Federal Bankruptcy Code.

Section 607.  Corporate Trustee Required; Eligibility.
              --------------------------------------- 

          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 Person publishes reports
of condition at least annually, pursuant to law or to 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 Person shall be deemed to be its combined capital and surplus as
set forth in its most recent report of condition so published.  If at any time
the Trustee shall cease to be eligible in accordance with the provisions of this
Section, it  shall resign immediately in the manner and with the effect
hereinafter specified in this Article.

Section 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 Company.  If an
instrument of acceptance by a successor Trustee shall not have been delivered to
the Trustee within 30
<PAGE>
 
                                       56

days after the giving of such notice of resignation, the resigning Trustee may
petition any court of competent jurisdiction for the appointment of a successor
Trustee with respect to the Securities of such series.

          (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 Company.

          (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 Company 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(a) and
     shall fail to resign after written request therefor by the Company 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 Company 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 Company, 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 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 Company and the retiring
Trustee, the successor Trustee so appointed shall, forthwith upon its acceptance
of such appointment, become the successor Trustee with respect to the Securities
of such series and to that extent supersede the successor Trustee appointed by
the Company.  If no successor Trustee with respect to the Securities of any
series shall have been so appointed by the Company 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
<PAGE>
 
                                       57

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 the Securities of such series.

          (f)  The Company 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 so appointed shall
execute, acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or removal
of the retiring Trustee shall become effective and such successor Trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts and duties of the retiring Trustee; but, on the request
of the Company or the successor Trustee, such retiring Trustee shall, upon
payment of all amounts owed to it pursuant to this Indenture, 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.  The retiring Trustee shall have no liability for any acts or
omissions of any successor Trustee.

          (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 Company, 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
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 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,
<PAGE>
 
                                       58

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 Company or any successor Trustee, such
retiring Trustee shall, upon payment of all amounts owed to it pursuant to this
Indenture, 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 Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Trustee all such rights, powers and trusts referred
to in paragraph (a) and (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 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.  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 original issue and upon
exchange, registration of transfer or partial redemption thereof or pursuant to
Section 306, and Securities so authenticated shall be entitled to the 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
<PAGE>
 
                                       59

Company.  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 reasonably acceptable to the Company and,
except as may otherwise be provided pursuant to Section 301, 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, any State thereof
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 to the requirements of said 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.  If 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 any further
act on the part of the Trustee or the Authenticating Agent.

          An Authenticating Agent for any series of Securities may resign at any
time by giving written notice of resignation to the Trustee for such series and
to the Company.  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 Company.  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 Company 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.

          The Company 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.
<PAGE>
 
                                       60

          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
alternative certificate of authentication in the following form:

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


                              BANKERS TRUST COMPANY, as Trustee



                              By                                  ,
                                  ------------------------------- 
                                  As Authenticating Agent
                                  -----------------------



                              By                                  ,
                                  ------------------------------- 
                                  Authorized Officer
                                  ------------------



                                 ARTICLE SEVEN

               Holders' Lists and Reports by Trustee and Company

Section 701.  Disclosure of Names and Addresses of Holders.
             --------------------------------------------- 

          Every Holder of Securities or coupons, by receiving and holding the
same, agrees with the Company and the Trustee that neither the Company 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 May 15 of each year commencing with the first May
15 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 May 15 if required by TIA Section
313(a).
<PAGE>
 
                                       61

Section 703.  Reports by Company.
             ------------------- 

          The Company will:

               (1) file with the Trustee, within 15 days after the Company 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
          Company may be required to file with the Commission pursuant to
          Section 13 or Section 15(d) of the Exchange Act; or, if the Company is
          not required to file information, documents or reports pursuant to
          either of such Sections, then it will file with the Trustee and the
          Commission, 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 Exchange Act 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 Company 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 Company
          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.  Calculation of Original Issue Discount.
              --------------------------------------

                    Upon request of the Trustee, the Company shall file with the
Trustee promptly at the end of each calendar year a written notice specifying 
the amount of original issue discount (including daily rates and accrual 
periods), if any, accrued on Outstanding Securities as of the end of such year.
     

                                 ARTICLE EIGHT

             Consolidation, Merger, Conveyance, Transfer or Lease

Section 801.  Company May Consolidate, Etc., Only on Certain Terms.
              ---------------------------------------------------- 

                    The Company shall not consolidate with or merge into any
          other Person or convey, transfer or lease its properties and assets
          substantially as an entirety to any Person, and the Company shall not
          permit any Person to consolidate with or merge into the Company or
          convey, transfer or lease its properties and assets substantially as
          an entirety to the Company, unless:
<PAGE>
 
                                       62

          (1) in case the Company shall consolidate with or merge into another
     Person or convey, transfer or lease its properties and assets substantially
     as an entirety to any Person, the Person formed by such consolidation or
     into which the Company is merged or the Person which acquires by conveyance
     or transfer, or which leases, the properties and assets of the Company
     substantially as an entirety shall be a corporation, shall be organized and
     validly existing under the laws of the United States of America, any State
     thereof or the District of Columbia and shall expressly assume, by an
     indenture supplemental hereto, executed and delivered to the Trustee, in
     form satisfactory to the Trustee, the due and punctual payment of the
     principal of and any premium and interest on all the Securities and the
     performance or observance of every covenant of this Indenture on the part
     of the Company to be performed or observed;

          (2)  immediately after giving effect to such transaction and treating
     any indebtedness which becomes an obligation of the Company or any
     Subsidiary as a result of such transaction as having been incurred by the
     Company or such Subsidiary at the time of such transaction, no Default, and
     no event which, after notice or lapse of time or both, would become a
     Default, shall have happened and be continuing; and

          (3)  the Company has delivered to the Trustee an Officers' Certificate
     and an Opinion of Counsel, each stating that such consolidation, merger,
     conveyance, transfer or lease and, if a supplemental indenture is required
     in connection with such transaction, such supplemental indenture complies
     with this Article and that all conditions precedent herein provided for
     relating to such transaction have been complied with.

Section 802.  Successor Substituted.
              --------------------- 

       Upon any consolidation of the Company with, or merger of the Company
into, any other Person or any conveyance, transfer or lease of the properties
and assets of the Company substantially as an entirety in accordance with
Section 801, the successor Person formed by such consolidation or into which the
Company is merged or to which such conveyance, transfer or lease is made shall
succeed to, and be substituted for, and may exercise every right and power of,
the Company under this Indenture with the same effect as if such successor
Person had been named as the Company herein, and thereafter, except in the case
of a lease, the predecessor Person shall be relieved of all obligations and
covenants under this Indenture and the Securities.
<PAGE>
 
                                       63

                                ARTICLE NINE

                            Supplemental Indentures

Section 901. Supplemental Indentures Without Consent of Holders.
             -------------------------------------------------- 

          Without the consent of any Holders of Securities or coupons, the
Company, 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 Company and
     the assumption by any such successor of the covenants of the Company herein
     and in the Securities; or

          (2)  to add to the covenants of the Company 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
     Company; 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 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
<PAGE>
 
                                       64

     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 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 or 
     exchangeable for any securities of any Person (including the Company); or
          
          (7)  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

          (8)  to cure any ambiguity, to correct or supplement any provision
     herein which may be inconsistent with any other provision herein, or to
     make any other provisions with respect to matters or questions arising
     under this Indenture, provided that such action pursuant to this clause (9)
     shall not adversely affect the interests of the Holders of Securities of
     any series or any related coupons in any material respect; or

          (9)  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, 1302 and
     1303; 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 66-2/3% in principal
amount of the Outstanding Securities of each series affected by such
supplemental indenture, by Act of said Holders delivered to the Company and the
Trustee, the Company, when authorized by 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 which affect such series of Securities
or of modifying in any manner the rights of the Holders of Securities of such
series and any related coupons under this Indenture; provided, however, that no
such supplemental indenture shall, without the consent of the Holder of each
Outstanding Security of such series 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 of interest thereon, or
     any premium payable upon the redemption thereof, or change any obligation
     of the Company to pay Additional Amounts pursuant to Section 1004 (except
     as contemplated by Section 801(1) and permitted by Section 901(1)), or
     reduce the portion of the principal of an Original Issue Discount Security
     or Indexed Security that would be due and payable upon a declaration of
     acceleration of the Maturity thereof pursuant to Section 502 or the      
<PAGE>
 
                                       65
         
     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 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 adversely affect any right to exchange any
     Security as may be provided pursuant to Section 301 herein, or adversely
     affect any right to convert any Security as may be provided pursuant to
     Section 301 or Article Fifteen, or modify the provisions of this Indenture
     with respect to subordination of the Securities of any series in a manner
     adverse to the Holders.      

          (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 of compliance with certain provisions of this Indenture
     which affect such series or certain defaults applicable to such series
     hereunder and their consequences provided for in this Indenture, or reduce
     the requirements of Section 1404 for quorum or voting, or

          (3)  modify any of the provisions of this Section, Section 513 or
     Section 1009, except to increase any such percentage or to provide that
     certain other provisions of this Indenture which affect such series cannot
     be modified or waived without the consent of the Holder of each Outstanding
     Security of such series.

          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.

          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.

Section 903.  Execution of Supplemental Indentures.
              ------------------------------------ 

          In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and 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.
<PAGE>
 
                                       66

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

Section 907.  Subordination Unimpaired.
              ------------------------ 

          No provision in any supplemental indenture that affects the superior
position of the holders of Senior Indebtedness or Other Senior Obligations shall
be effective against any holder of Senior Indebtedness or Other Senior
Obligations, unless such holder shall have consented thereto.


                                  ARTICLE TEN

                                   Covenants

Section 1001. Payment of Principal, Premium and Interest.
              ------------------------------------------ 

          The Company 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, if any, on the Securities of that series in
accordance with the terms of such series of Securities and this Indenture.  Any
interest due on Bearer Securities on or before Maturity, other than Additional
Amounts, if any, payable as provided in Section 1004 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 of any series pursuant to Section 301, at the option
of the Company,
<PAGE>
 
                                       67

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.  Unless otherwise specified as contemplated by Section 301 with
respect to any series of Securities, any interest due on Bearer Securities on or
before Maturity shall be payable only upon presentation and surrender of the
several coupons for such interest installments as are evidenced thereby as they
severally mature.

Section 1002.  Maintenance of Office or Agency.
               ------------------------------- 

          If Securities of a series are issuable only as Registered Securities,
the Company 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, where Securities of that series may be surrendered for
registration of transfer or exchange, where Securities of that series that are
convertible or exchangeable may be surrendered for conversion, and where notices
and demands to or upon the Company 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 Company will maintain (A) in the Borough of Manhattan,
The City of New York, an office or agency where any Registered Securities of
that series may be presented or surrendered for payment, where any Registered
Securities of that series may be surrendered for registration of transfer or
exchange, where Securities of that series that are convertible or exchangeable
may be surrendered for conversion or exchange, as applicable, where notices and
demands to or upon the Company 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 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;
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 Company 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 or exchange, where Securities of that series that are convertible or
exchangeable may be surrendered for conversion or exchange, as applicable, and
where notices and demands to or upon the Company in respect of the Securities of
that series and this Indenture may be served.  The Company 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 Company shall fail to
maintain any such required office or agency or shall fail to furnish the Trustee
with the address thereof, such presentations, surrenders, notices 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 at the offices specified in the Security, in London,
England, and the Company hereby appoints the same as its agent to receive such
respective presentations,
<PAGE>
 
                                       68

surrenders, notices and demands, and the Company hereby appoints the Trustee its
agent to receive all such presentations, surrenders, notices and demands.

          Unless otherwise specified with respect to any Securities pursuant to
Section 301, no payment of principal, premium or interest on Bearer Securities
shall be made at any office or agency of the Company in the United States or by
check mailed to any address in the United States or by transfer to an account
maintained with a bank located in the United States; provided, however, that, if
the Securities of a series are payable in Dollars, payment of principal of (and
premium, if any) and interest, if any, on any Bearer Security shall be made at
the office of the Company's Paying Agent in the Borough of Manhattan, The City
of New York, if (but only if) payment in Dollars of the full amount of such
principal, premium or interest, as the case may be, at all offices or agencies
outside the United States maintained for such purpose by the Company in
accordance with this Indenture, is illegal or effectively precluded by exchange
controls or other similar restrictions.

          The Company 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 Company 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 Company 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 Company hereby designates as Places of Payment for each series
of Securities the office or agency of the Company in the Borough of Manhattan,
The City of New York, and initially appoints the Trustee at its Corporate Trust
Office in the Borough of Manhattan, The City of New York as Paying Agent in each
such city 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 currency other than Dollars or (ii) may be payable in a currency other than
Dollars, or so long as it is required under any other provision of the
Indenture, then the Company 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 Company 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 (or premium, if any) or interest, if
any, on 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 and except, if applicable, as
provided in
<PAGE>
 
                                       69

Sections 312(b), 312(d) and 312(e)) sufficient to pay the principal of (and
premium, if any) and interest, if any, on Securities of such series so becoming
due until such sums shall be paid to such Persons or otherwise disposed of as
herein provided, and will promptly notify the Trustee of its action or failure
so to act.

          Whenever the Company shall have one or more Paying Agents for any
series of Securities and any related coupons, it will, prior to each due date of
the principal of (or premium, if any) or interest, if any, on 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 (or premium, if any) or
interest, if any, so becoming due, such sum to be held in trust for the benefit
of the Persons entitled to such principal, premium or interest and (unless such
Paying Agent is the Trustee) the Company will promptly notify the Trustee of its
action or failure so to act.

          The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which such sums were held by the Company or
such Paying Agent; and, upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such 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
Company, in trust for the payment of the principal of (or premium, if any) or
interest, if any, on any Security of any series and remaining unclaimed for two
years after such principal, premium or interest has become due and payable shall
be paid to the Company on Company Request, or (if then held by the Company)
shall be discharged from such trust; and the Holder of such Security shall
thereafter, as an unsecured general creditor, look only to the Company for
payment of such principal, premium or interest on any Security, without interest
thereon, and all liability of the Trustee or such Paying Agent with respect to
such trust money, and all liability of the Company as trustee thereof, shall
thereupon cease; provided, however, that the Trustee or such Paying Agent,
before being required to make any such repayment, may at the expense of the
Company cause to be published once, in an Authorized Newspaper, 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 Company.

Section 1004.  Additional Amounts.
               ------------------ 

          If any Securities of a series provide for the payment of Additional
Amounts, the Company 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, the payment of the principal of (or premium, if any) or interest,
if any, on any Security of any series
<PAGE>
 
                                       70

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, premium
or interest if there has been any change with respect to the matters set forth
in the below-mentioned Officers' Certificate, the Company will furnish the
Trustee and the Company's principal Paying Agent or Paying Agents, if other than
the Trustee, with an Officers' Certificate instructing the Trustee and such
Paying Agent or Paying Agents whether such payment of principal, 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 Company will pay to the
Trustee or such Paying Agent the Additional 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 Company
covenants to indemnify the Trustee and any Paying Agent for, and to hold them
harmless against, any loss, liability or expense reasonably incurred without
negligence or bad faith on their part arising out of or in connection with
actions taken or omitted by any of them in reliance on any Officers' Certificate
furnished pursuant to this Section or in reliance on the Company's not
furnishing such an Officers' Certificate.

Section 1005.  Statement by Officers as to Default.
               ----------------------------------- 

          The Company will deliver to the Trustee, within 120 days after the end
of each fiscal year of the Company ending after the date hereof, an Officers'
Certificate, stating whether to the best knowledge of the signers thereof the
Company is in default in the performance and observance of any of the conditions
or covenants of this Indenture (without regard to any period of grace or
requirement of notice provided hereunder) and,
<PAGE>
 
                                       71

if the Company shall be in default, specifying all such defaults and the nature
and status thereof of which they may have knowledge.

Section 1006.  Existence.
               --------- 

          Subject to Article Eight, the Company will do or cause to be done all
things necessary to preserve and keep in full force and effect its existence,
rights (charter and statutory) and franchises; provided, however, that the
Company shall not be required to preserve any such right or franchise if the
Board of Directors shall determine that the preservation thereof is no longer
desirable in the conduct of the business of the Company and that the loss
thereof is not disadvantageous in any material respect to the Holders.

Section 1007.  Maintenance of Properties.
               ------------------------- 

          The Company will cause all 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 Company may
be necessary so that the business carried on in connection therewith may be
properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Company from discontinuing the
operation or maintenance of any of such properties if such discontinuance is, in
the judgment of the Company, desirable in the conduct of its business or the
business of any Subsidiary and not disadvantageous in any material respect to
the Holders.

Section 1008.  Payment of Taxes and Other Claims.
               --------------------------------- 

          The Company 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 the Company or any Subsidiary or
upon the income, profits or property of the Company or any Subsidiary, and (2)
all lawful claims for labor, materials and supplies which, if unpaid, might by
law become a lien upon the property of the Company or any Subsidiary; provided,
however, that the Company 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 by appropriate
proceedings.

Section 1009.  Waiver of Certain Covenants.
               --------------------------- 

          The Company may, with respect to any series of Securities, omit in any
particular instance to comply with any term, provision or condition which
affects such series set forth in Sections 1007 and 1008, and, as specified
pursuant to Section 301(15)  for Securities of any series, in any covenants of
the Company added to Article Ten pursuant to Section 301(14) or Section 301(15),
in connection with Securities of a series if before the time for such compliance
the Holders of at least 66-2/3% in principal amount of all Outstanding
Securities of any series, by Act of such Holders, waive such
<PAGE>
 
                                       72

compliance in such instance with such term, provision or condition, but no such
waiver shall extend to or affect such term, provision or condition except to the
extent so expressly waived, and, until such waiver shall become effective, the
obligations of the Company and the duties of the Trustee to Holders of
Securities of such series 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.

Section 1102.  Election to Redeem; Notice to Trustee.
               ------------------------------------- 

          The election of the Company to redeem any Securities shall be
evidenced by or pursuant to a Board Resolution.  In case of any redemption at
the election of the Company of less than all the Securities of any series, the
Company shall, at least 60 days prior to the Redemption Date fixed by the
Company (unless a shorter notice shall be satisfactory to the Trustee), notify
the Trustee of such Redemption Date and of the principal amount 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 Company 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 (unless all of the Securities of such
series and of a specified tenor are to be redeemed), the particular Securities
to be redeemed shall be selected in accordance with the terms of such Securities
but, if not specified, 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
the Trustee in its customary manner 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 Company and the Security
Registrar (if other than itself) in writing of the Securities selected for
redemption and, in the case of
<PAGE>
 
                                       73

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 Securities redeemed or to be redeemed only in part, to the
portion of the principal amount of such Securities 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.

          All notices of redemption shall state:

          (l)  the Redemption Date,

          (2)  the Redemption Price and accrued interest to the Redemption Date
     payable as provided in Section 1106, 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 amounts) 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 will
     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,
<PAGE>
 
                                       74

     maturing after the Redemption Date, are to be surrendered for payment of
     the Redemption Price and accrued interest, if any,

          (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 Company, 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 Company, on which such exchanges may be
     made, and

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

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

Section 1105.  Deposit of Redemption Price.
               --------------------------- 

          Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, 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 and except, if applicable, as provided in Sections 312(b), 312(d)
and 312(e)) 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 and except, if applicable, as provided in Sections
312(b), 312(d) and 312(e)) (together with accrued interest, if any, to the
Redemption Date), and from and after such date (unless the Company shall default
in the payment of the Redemption Price and accrued interest) such
<PAGE>
 
                                       75

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 Company 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 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.

          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 Company and the Trustee if there be
furnished to them such security or indemnity as they may require to save each of
them and any Paying Agent harmless.  If thereafter the Holder of such Security
shall surrender to 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 Redemption Price shall, until paid, bear 
interest from the Redemption Date at the rate of interest set forth in such 
Security or, in the case of an Orginal Issue Discount Security, at the Yield to 
Maturity of such 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 Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing) and the  Company shall execute, and the Trustee
shall authenticate and deliver to the Holder of such 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.
<PAGE>
 
                                       76

                                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 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 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 Company 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 Company
pursuant to the terms of such Securities or through the application of permitted
optional sinking fund payments pursuant to the terms of such Securities, in each
case in satisfaction of all or any part of any mandatory sinking fund payment
with respect to the Securities of such series required to be made pursuant to
the terms of such Securities as provided for by the terms of such series;
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 Company will deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing sinking fund payment for
that series pursuant to the terms of that series, the portion hereof, 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 except, if applicable, as
provided in Sections 312(b), 312(d) and 312(e)) and the portion thereof, if any,
which is to be
<PAGE>
 
                                       77

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 Company 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
Company 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

                       Defeasance and Covenant Defeasance

Section 1301. Applicability of Article; Company'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 1302 or (b)
covenant defeasance of the Securities of or within a series under Section 1303,
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
Company may at its option by Board Resolution, at any time, with respect to such
Securities and any coupons appertaining thereto, elect to have Section 1302 (if
applicable) or Section 1303 (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 1302.  Defeasance and Discharge.
               ------------------------ 

          Upon the Company's exercise of the above option applicable to this
Section with respect to any Securities of or within a series, the Company 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 1304 are satisfied (hereinafter, "defeasance").
For this purpose, such defeasance means that the Company 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 1305 and the other
Sections of this Indenture referred to in clauses (A) and (B) of this Section,
and to have satisfied all 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 Company, shall execute proper
<PAGE>
 
                                       78

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 1304 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 Securities and any coupons appertaining
thereto when such payments are due, (B) the Company'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 1004, (C) the rights, powers, trusts, duties and immunities of the
Trustee hereunder and (D) this Article.  Subject to compliance with this Article
Thirteen, the Company may exercise its option under this Section notwithstanding
the prior exercise of its option under Section 1303 with respect to such
Securities and any coupons appertaining thereto.

Section 1303.  Covenant Defeasance.
               ------------------- 

          Upon the Company's exercise of the above option applicable to this
Section with respect to any Securities of or within a series, the Company shall
be released from its obligations under Sections 1004 and 1005, 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 1304 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 and 1005, 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
Company 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 a
Default under Section 503(4) 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 1304.  Conditions to Defeasance or Covenant Defeasance.
               ----------------------------------------------- 

          The following shall be the conditions to application of Section 1302
or Section 1303 to any Outstanding Securities of or within a series and any
coupons appertaining thereto:

               (a)  The Company 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 Thirteen applicable to it) as trust funds in trust for the purpose
     of making the following
<PAGE>
 
                                       79

     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 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 an amount, sufficient, 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 Company 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.

          (d)  In the case of an election under Section 1302, the Company shall
     have delivered to the Trustee an Opinion of Counsel stating that (i) the
     Company 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 1303, the Company 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
<PAGE>
 
                                       80

     covenant 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 covenant defeasance had not occurred.

          (f)  The Company 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 1302 or the covenant defeasance
     under Section 1303 (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 Company's
     option under Section 1302 or Section 1303 (as the case may be),
     registration is not required under the Investment Company Act of 1940, as
     amended, by the Company, 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 Company in connection therewith pursuant to Section 301.

Section 1305. 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 1305, the
"Trustee") pursuant to Section 1304 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 Company 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, 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 1304(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 312(b) 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 1304(a) has been made in respect of such
Security, or (b) a Currency Conversion Event occurs as contemplated in Section
312(d) or 312(e) or by the terms of any Security in respect of which the deposit
pursuant to Section 1304(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
<PAGE>
 
                                       81

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 in respect of
such Security into the currency or currency unit in which such Security becomes
payable as a result of such election or Currency 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
Currency Conversion Event, for such currency or currency unit in effect (as
nearly as feasible) at the time of the Currency Conversion Event.

          The Company 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 1304 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, the Trustee
shall deliver or pay to the Company from time to time upon Company Request any
money or Government Obligations (or other property and any proceeds therefrom)
held by it as provided in Section 1304 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.

Section 1306.  Reinstatement.
               ------------- 

          If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 1305 by reason of any order or judgment of any court or
governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's obligations under this Indenture and such
Securities and any related coupons shall be revived and reinstated as though no
deposit had occurred pursuant to Section 1302 or 1303, as the case may be, until
such time as the Trustee or Paying Agent is permitted to apply all such money in
accordance with Section 1305; provided, however, that if the Company makes any
payment of principal of (or premium, if any, on) or interest on any such
Security or any related coupon following the reinstatement of its obligations,
the Company shall be subrogated to the rights of the Holders of such Securities
and any related coupons to receive such payment from the money held by the
Trustee or Paying Agent.

                                ARTICLE FOURTEEN

                       Meetings of Holders of Securities

Section 1401.  Purposes for Which Meetings May Be Called.
               ----------------------------------------- 

          If Securities of a series are issuable as Bearer Securities, a meeting
of Holders of Securities of such series may be called at any time and from time
to time
<PAGE>
 
                                       82

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 1402.  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 1401, to be held
at such time and at such place in the Borough of Manhattan, The City of New York
or in London as the Trustee shall determine.  Notice of every meeting of Holders
of 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 Company, 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 1401, by
written request setting forth in reasonable detail the action proposed to be
taken at the meeting, and the Trustee shall not have made the first publication
of the notice of such meeting within 21 days after receipt of such request or
shall not thereafter proceed to cause the meeting to be held as provided herein,
then the Company or the Holders of Securities of such series in the amount above
specified, as the case may be, may determine the time and the place in the
Borough of Manhattan, The City of New York or in London for such meeting and may
call such meeting for such purposes by giving notice thereof as provided in
subsection (a) of this Section.

Section 1403.  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 Company and its counsel.

Section 1404.  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
<PAGE>
 
                                       83

principal amount of the Outstanding Securities of such series shall constitute a
quorum.  In the absence of a quorum within 30 minutes of the time appointed for
any such meeting, the meeting shall, if convened at the request of Holders of
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 any such adjourned meeting, such adjourned meeting may be further
adjourned for a period of not less than 10 days as determined by the chairman of
the meeting prior to the adjournment of such adjourned meeting.  Notice of the
reconvening of any adjourned meeting shall be given as provided in Section
1402(a), except that such notice need be given only once not less than five days
prior to the date on which the meeting is scheduled to be reconvened.  Notice of
the reconvening of any adjourned meeting shall state expressly the percentage,
as provided above, of the principal amount of the Outstanding Securities of such
series which shall constitute a quorum.

          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 Holders of a
majority in principal amount of the Outstanding Securities if that series;
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 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 1404, 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.
<PAGE>
 
                                       84

Section 1405.  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 Company or by Holders of Securities as provided in Section 1402(b), in which
case the Company 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 1402 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 1406.  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
<PAGE>
 
                                       85

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 1402 and, if
applicable, Section 1404.  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 Company and another to the Trustee to be
preserved by the Trustee, the latter to have attached thereto the ballots voted
at the meeting.  Any record so signed and verified shall be conclusive evidence
of the matters therein stated.



                                ARTICLE FIFTEEN

                            Conversion of Securities


Section 1501.  Applicability of Article.
               ------------------------ 

          Securities of any series which are convertible into Common Stock at
the option of the Holder of such Securities shall be convertible in accordance
with their terms and (unless otherwise specified as contemplated by Section 301
for the Securities of any series) in accordance with this Article.  Each
reference in this Article Fifteen to "a Security" or "the Securities" refers to
the Securities of the particular series that is convertible into Common Stock.
If more than one series of Securities with conversion privileges are Outstanding
at any time, the provisions of this Article Fifteen shall be applied separately
to each such series.

Section 1502.  Right of Holders to Convert Securities.
               -------------------------------------- 

          Subject to and upon compliance with the terms of the Securities and
the provisions of Section 1108 and this Article Fifteen, at the option of the
Holder thereof, any Security of any series of any authorized denomination, or
any portion of the principal amount thereof which is $1,000 or any integral
multiple of $1,000, may, at any time during the period specified in the
Securities of such series, or in case such Security or portion thereof shall
have been called for redemption, then in respect of such Security or portion
thereof until and including, but not after (unless the Company shall default in
payment due upon the redemption thereof) the close of business on the Redemption
Date (except that in the case of redemption at the option of the Holder, if
specified in the terms of the relevant Security, such right shall terminate upon
receipt of written notice of the exercise of such option), be converted into
duly authorized, validly issued, fully paid and nonassessable shares of Common
Stock, as specified in such Security, at the conversion price or conversion rate
for each $1,000 principal amount of Securities (such initial conversion rate
reflecting an initial conversion price specified in such Security) in effect
<PAGE>
 
                                       86

on the conversion date, or, in case an adjustment in the conversion price has
taken place pursuant to the provisions of Section 1505, then at the applicable
conversion price as so adjusted, upon surrender of the Security or Securities,
the principal amount of which is so to be converted, to the Company at any time
during usual business hours at the office or agency to be maintained by it in
accordance with the provisions of Section 1002, accompanied by a written notice
of election to convert as provided in Section 1503 and, if so required by the
Company and/or the Trustee, by a written instrument or instruments of transfer
in form satisfactory to the Company and/or the Trustee, as applicable, duly
executed by the Holder thereof or his attorney duly authorized in writing.  All
Securities surrendered for conversion shall, if surrendered to the Company or
any conversion agent, be delivered to the Trustee for cancellation and cancelled
by it, or shall, if surrendered to the Trustee, be cancelled by it, as provided
in Section 310.

          The initial conversion price or conversion rate in respect of a series
of Securities shall be as specified in the Securities of such series.  The
conversion price or conversion rate will be subject to adjustment on the terms
set forth in Section 1505 or such other or different terms, if any, as may be
specified by Section 301 for Securities of such series.  Provisions of this
Indenture that apply to conversion of all of a Security also apply to conversion
of a portion of it.

Section 1503.  Issuance of Shares of Common Stock on Conversions.
               ------------------------------------------------- 

          As promptly as practicable after the surrender, as herein provided, of
any Security or Securities for conversion, the Company shall deliver or cause to
be delivered at its said office or agency to or upon the written order of the
Holder of the Security or Securities so surrendered a certificate or
certificates representing the number of duly authorized, validly issued, fully
paid and nonassessable shares of Common Stock into which such Security or
Securities may be converted in accordance with the terms thereof and the
provisions of this Article Fifteen.  Prior to delivery of such certificate or
certificates, the Company shall require written notice at its said office or
agency from the Holder of the Security or Securities so surrendered stating that
the Holder irrevocably elects to convert such Security or Securities, or, if
less than the entire principal amount thereof is to be converted, stating the
portion thereof to be converted.  Such notice shall also state the name or names
(with address and social security or other taxpayer identification number) in
which said certificate or certificates are to be issued.  Such conversion shall
be deemed to have been made at the time that such Security or Securities shall
have been surrendered for conversion and such notice shall have been received by
the Company or the Trustee, the rights of the Holder of such Security or
Securities as a Holder shall cease at such time, the Person or Persons entitled
to receive the shares of Common Stock upon conversion of such Security or
Securities shall be treated for all purposes as having become either record
holder or holders of such shares of Common Stock at such time and such
conversion shall be at the conversion price in effect at such time.  In the case
of any Security of any series which is converted in part only, upon such
conversion, the Company shall execute and, upon the Company's request and at the
Company's expense, the Trustee or an Authenticating Agent shall authenticate and
deliver to the Holder thereof, as requested by such Holder, a new Security or
Securities of such
<PAGE>
 
                                       87

series of authorized denominations in aggregate principal amount equal to the
unconverted portion of such Security.

          If the last day on which a Security may be converted is not a Business
Day in a place where the conversion agent for that Security is located, the
Security may be surrendered to that conversion agent on the next succeeding day
that is a Business Day.

          The Company shall not be required to deliver certificates for shares
of Common Stock upon conversion while its stock transfer books are closed for a
meeting of shareholders or for the payment of dividends or for any other
purpose, but certificates for shares of Common Stock shall be delivered as soon
as the stock transfer books shall again be opened.

Section 1504.  No Payment or Adjustment for Interest or Dividends.
               -------------------------------------------------- 

          Unless otherwise specified as contemplated by Section 301 for
Securities of such series, Securities surrendered for conversion during the
period from the close of business on any Regular Record Date (or Special Record
Date) next preceding any Interest Payment Date to the opening of business on
such Interest Payment Date (except Securities called for redemption on a
Redemption Date within such period) when surrendered for conversion must be
accompanied by payment (by certified or official bank check to the order of the
Company payable in clearing house funds at the location where the Securities are
surrendered) of an amount equal to the interest thereon which the Holder is to
receive on such Interest Payment Date.  Payment of interest shall be made, as of
such Interest Payment Date or such other payment date (as set forth in Section
307), as the case may be, to the Holder of the Securities as of such Regular
Record Date or Special Record Date, as applicable.  Except where Securities
surrendered for conversion must be accompanied by payment as described above, no
interest on converted Securities will be payable by the Company on any Interest
Payment Date subsequent to the date of conversion.  No other payment or
adjustment for interest or dividends is to be made upon conversion.
Notwithstanding the foregoing, upon conversion of any Original Issue Discount
Security, the fixed number of shares of Common Stock into which such Security is
convertible delivered by the Company to the Holder thereof shall be applied,
first, to the portion attributable to the accrued original issue discount
relating to the period from the date of issuance to the date of conversion of
such Security, and second, to the portion attributable to the balance of the
principal amount of such Security.

Section 1505.  Adjustment of Conversion Price.
               ------------------------------ 

          Unless otherwise specified as contemplated by Section 301 for
Securities of such series, the conversion price for Securities shall be adjusted
from time to time as follows:

          (a)  In case the Company shall pay a dividend or make a distribution
     on Common Stock in shares of Common Stock, the conversion price for the
     Securities of such series in effect at the opening of business on the day
     following the date fixed for the determination of shareholders entitled to
     receive such dividend or
<PAGE>
 
                                       88

     other distribution shall be adjusted by multiplying such conversion price
     by a fraction, the numerator of which shall be the number of shares of
     Common Stock outstanding at the close of business on the record date and
     the denominator of which shall be the sum of such number of shares of
     Common Stock and the total number of shares of Common Stock constituting
     such dividend or other distribution and the resulting adjusted conversion
     price shall become effective immediately after the opening of business on
     the day following the record date, except as provided in subsection (i)
     below.

          (b)  In case the Company shall subdivide the outstanding Common Stock
     into a greater number of shares of Common Stock, the conversion price for
     the Securities of such series in effect at the opening of business on the
     day following the date upon which such subdivision becomes effective shall
     be proportionately reduced, and conversely, in case the Company shall
     combine the outstanding Common Stock into a smaller number of shares of
     Common Stock, the conversion price in effect at the opening of business on
     the day following the date upon which such combination becomes effective
     shall be proportionately increased, and the resulting reduced or increased
     conversion price, as the case may be, shall become effective immediately
     after the opening of business on the day following the date upon which such
     subdivision or combination becomes effective.

          (c)  In case the Company shall issue rights or warrants to all holders
     of Common Stock entitling them (for a period expiring within 45 days after
     the record date mentioned below) to subscribe for or purchase shares of
     Common Stock at a price per share less than the current market price per
     share of Common Stock (as defined for purposes of this subsection (c) in
     subsection (f) below), at the record date for the determination of
     stockholders entitled to receive such rights or warrants, the conversion
     price in effect immediately prior thereto shall be adjusted so that the
     same shall equal the price determined by multiplying the conversion price
     in effect immediately prior to the date of issuance of such rights or
     warrants by a fraction, the numerator of which shall be the number of
     shares of Common Stock outstanding on the record date for issuance of such
     rights or warrants plus the number of shares of Common Stock which the
     aggregate offering price of the total number of shares of Common Stock so
     offered would purchase at such current market price, and the denominator of
     which shall be the number of shares of Common Stock outstanding on the
     record date for issuance of such rights or warrants plus the number of
     additional shares of Common Stock receivable upon exercise of such rights
     or warrants.  Such adjustment shall be made successively whenever any such
     rights or warrants are issued, and shall become effective immediately,
     except as provided in subsection (i) below, after such record date.  In
     determining whether any rights or warrants entitle the Holders of the
     Securities of such series to subscribe for or purchase shares of Common
     Stock at less than such current market price, and in determining the
     aggregate offering price of such shares of Common Stock, there shall be
     taken into account any consideration received by the Company for such
     rights or warrants plus the exercise price thereof, the value of such
     consideration or exercise price, as the case may be, if other than cash, to
     be determined by the Board of Directors.
<PAGE>
 
                                       89

          (d) In case the Company shall distribute to all holders of Common
     Stock any shares of capital stock of the Company (other than Common Stock)
     or evidences of its indebtedness or assets (excluding cash dividends or
     distributions paid from retained earnings of the Company or dividends
     payable in shares of Common Stock) or rights or warrants to subscribe for
     or purchase any of its securities (excluding those rights or warrants
     referred to in subsection (c) above) (any of the foregoing being herein in
     this subsection (d) called the "Distributed Securities"), then, in each
     such case, unless the Company elects to reserve such Distributed Securities
     for distribution to the Holders of Securities of such series upon the
     conversion so that any such Holder converting such Securities will receive
     upon such conversion, in addition to the shares of Common Stock to which
     such Holder is entitled, the amount and kind of Distributed Securities
     which such Holder would have received if such Holder had, immediately prior
     to the record date for the distribution of the Distributed Securities,
     converted Securities into Common Stock, the conversion price shall be
     adjusted so that the same shall equal the price determined by multiplying
     the conversion price in effect immediately prior to the date of such
     distribution by a fraction the numerator of which shall be the current
     market price per share (as defined for purposes of this subsection (d) in
     subsection (f) below) of Common Stock on the record date mentioned above
     less the then fair market value (as determined by the Board of Directors,
     whose determination shall, if made in good faith, be conclusive) of the
     portion of the Distributed Securities so distributed allocable to one share
     of Common Stock and the denominator of which shall be the then current
     market price per share (as defined in subsection (f) below) of Common
     Stock; provided, however, that in the event the then fair market value (as
     so determined) of the portion of the Distributed Securities so distributed
     allocable to one share of Common Stock is equal to or greater than the
     current market price per share (as defined in subsection (f) below) of
     Common Stock on the record date mentioned above, in lieu of the foregoing
     adjustment, adequate provision shall be made so that each Holder of
     Securities of such series shall have the right to receive the amount and
     kind of Distributed Securities such holder would have received had he
     converted such Securities immediately prior to the record date for the
     distribution of the Distributed Securities.  Such adjustment shall become
     effective immediately, except as provided in subsection (i) below, after
     the record date for the determination of stockholders entitled to receive
     such distribution.

          (e)  If, pursuant to subsection (c) or (d) above, the conversion price
     shall have been adjusted because the Company has declared a dividend, or
     made a distribution, on the outstanding shares of Common Stock in the form
     of any right or warrant to purchase securities of the Company, or the
     Company has issued any such right or warrant, then, upon the expiration of
     any such unexercised right or unexercised warrant, the conversion price
     shall forthwith be adjusted to equal the conversion price that would have
     applied had such right or warrant never been declared, distributed or
     issued.

          (f)  For the purposes of any computation under subsection (c) above,
     the current market price per share of Common Stock on any date shall be
     deemed to
<PAGE>
 
                                       90

     be the average of the reported last sales prices for the thirty consecutive
     Trading Days (as defined below) commencing forty-five Trading Days before
     the date in question.  For the purpose of any computation under subsection
     (d) above, the current market price per share of Common Stock on any date
     shall be deemed to be the average of the reported last sales prices for the
     ten consecutive Trading Days before the date in question.  The reported
     last sales price for each day (whether for purposes of subsection (c) or
     subsection (d)) shall be the reported last sales price, regular way, or, in
     case no sale takes place on such day, the average of the reported closing
     bid and asked prices, regular way, in either case as reported on the New
     York Stock Exchange Composite Tape or, if the Common Stock is not listed or
     admitted to trading on the New York Stock Exchange at such time, on the
     principal national securities exchange on which the Common Stock is listed
     or admitted to trading or, if not listed or admitted to trading on any
     national securities exchange, on the National Market of the National
     Association of Securities Dealers, Inc. Automated Quotations System
     ("NASDAQ") or, if the Common Stock is not quoted on such National Market
     System, the average of the closing bid and asked prices on such day in the
     over-the-counter market as reported by NASDAQ or, if bid and asked prices
     for the Common Stock on each such day shall not have been reported through
     NASDAQ, the average of the bid and asked prices for such day as furnished
     by any New York Stock Exchange member firm regularly making a market in the
     Common Stock selected for such purpose by the Board of Directors or a
     committee thereof or, if no such quotations are available, the fair market
     value of the Common Stock as determined by a New York Stock Exchange member
     firm regularly making a market in the Common Stock selected for such
     purpose by the Board of Directors or a committee thereof.  As used herein,
     the term "Trading Day" with respect to the Common Stock means (x) if the
     Common Stock is listed or admitted for trading on the New York Stock
     Exchange or another national securities exchange, a day on which the New
     York Stock Exchange or such other national securities exchange is open for
     business or (y) if the Common Stock is quoted on the National Market of the
     NASDAQ, a day on which trades may be made on such National Market or (z)
     otherwise, any day other than a Saturday or Sunday or a day on which
     banking institutions in the State of New York are authorized or obligated
     by law or executive order to close.

          (g)  No adjustment in the conversion price shall be required unless
     such adjustment would require an increase or decrease of at least 1% in
     such conversion price; provided, however, that any adjustments which by
     reason of this subsection (g) are not required to be made shall be carried
     forward and taken into account in any subsequent adjustment; and, provided
     further that adjustment shall be required and made in accordance with the
     provisions of this Article Fifteen (other than this subsection (g)) not
     later than such time as may be required in order to preserve the tax free
     nature of a distribution to the holders of Common Stock.  All calculations
     under this Article Fifteen shall be made to the nearest cent or to the
     nearest 1/100 of a share, as the case may be, with one-half cent and 1/200
     of a share, respectively, being rounded upward.  Anything in this Section
     1505 to the contrary notwithstanding, the Company shall be entitled to make
     such reductions in the conversion price, in addition to those required by
     this Section 1505, as it in its
<PAGE>
 
                                       91

     discretion shall determine to be advisable in order that any stock
     dividend, subdivision of shares, distribution of rights or warrants to
     purchase stock or securities, or distribution of other assets (other than
     cash dividends) hereafter made by the Company to its stockholders shall not
     be taxable.

          (h)  Whenever the conversion price is adjusted as herein provided, the
     Company shall promptly file with the Trustee, at the Corporate Trust Office
     of the Trustee, and with the office or agency maintained by the Company for
     the conversion of Securities of such series pursuant to Section 1002, an
     Officers' Certificate, setting forth the conversion price after such
     adjustment and setting forth a brief statement of the facts requiring such
     adjustment, which certificate shall be conclusive evidence of the
     correctness of such adjustment.  Neither the Trustee nor any conversion
     agent shall be under any duty or responsibility with respect to any such
     certificate or any facts or computations set forth therein, except to
     exhibit said certificate from time to time to any Holder of a Security of
     such series desiring to inspect the same.  The Company shall promptly cause
     a notice setting forth the adjusted conversion price to be mailed to the
     Holders of Securities of such series, as their names and addresses appear
     upon the Security Register of the Company.

          (i)  In any case in which this Section 1505 provides that an
     adjustment shall become effective immediately after a record date for an
     event, the Company may defer until the occurrence of such event (y) issuing
     to the Holder of any Security of such series converted after such record
     date and before the occurrence of such event the additional shares of the
     Common Stock issuable upon such conversion by reason of the adjustment
     required by such event over and above the Common Stock issuable upon such
     conversion before giving effect to such adjustment and (z) paying to such
     holder any amount in cash in lieu of any fractional share of Common Stock
     pursuant to Section 1506 hereof.

          (j)  Whenever there shall be any change in the conversion price
     hereunder, then there shall be an adjustment (to the nearest hundredth of a
     share) in the number of shares of Common Stock receivable upon conversion
     of each Security, which adjustment shall become effective at the time such
     change in the conversion price becomes effective and shall be made by
     multiplying the number of shares of Common Stock receivable upon conversion
     of such Security immediately before such change in the conversion price by
     a fraction the numerator of which is the conversion price immediately
     before such change and the denominator of which is the conversion price
     immediately after such change.  The conversion price per share of Common
     Stock shall be adjusted and readjusted from time to time as provided in
     this Section 1505 and, as so adjusted or readjusted, shall remain in effect
     until a further adjustment or readjustment thereof is required by this
     Section 1505.

          (k)  The form of Security need not be changed because of any
     adjustment made pursuant to this Section 1505 and Securities issued after
     such adjustment may state the same conversion price and the same number of
     shares of Common Stock
<PAGE>
 
                                       92

     as are stated in the Securities initially issued pursuant to this
     Indenture.  The Company, however, may at any time in its sole discretion
     make any change in the form of Securities that it may deem appropriate to
     reflect such adjustment and that does not otherwise affect the substance
     thereof, and any Securities thereafter issued or countersigned, whether in
     exchange or substitution for outstanding Securities or otherwise, may be in
     the form as so changed.

         (1)   Reference is made to the Company's Rights Agreement, dated as 
     of August 25, 1989, between the Company and Society National Bank, as 
     successor Rights Agent, as such Rights Agreement may be from time to time
     amended, extended or otherwise modified, including any successor 
     agreement or other similar agreement entered into in replacement thereof 
     or substitution therefor (the "Rights Agreement"). Notwithstanding anything
     to the contrary in this Section 1505, no adjustment in the conversion 
     price shall be required pursuant to this Section 1505 by virtue of the 
     issuance of rights to purchase shares of Common Stock of the Company 
     (each a "Right") pursuant to the Rights Agreement prior to such Rights 
     becoming exercisable upon a Triggering Event (as such term is from time 
     to time defined in the Rights Agreement) at a purchase price less than 
     the current market price per share of Common Stock (as defined for 
     purposes of Section 1505(c)). Upon the Rights becoming exercisable  
     following a Triggering Event at a purchase price less than the current 
     market price per share of Common Stock, the conversion price of a 
     Security of such series shall be adjusted in accordance with Section 
     1505(c) above, as if the Rights were issued to all holders of shares of
     Common Stock on the date the Triggering Event occurred, provided, 
                                                             --------
     however, that no such adjustment in the conversion price of a Security
     -------
     of such series shall be made if Rights held by the holder of such Security
     of such series would be voided in accordance with the terms of the Rights
     Agreement, and, provided further, that any adjustment to the conversion 
                     ----------------
     price made pursuant to this Section 1505(1) shall be subject to further 
     adjustment in accordance with Section 1505(e) (including, without 
     limitation, if any Rights become void pursuant to the provisions of the  
     Rights Agreement).  Nothing in this Section 1505 shall be deemed to 
     require the Company to maintain the Rights Agreement or restrict the  
     Company's ability to amend or terminate the Rights Agreement in accordance
     with its terms. 
   
Section 1506.  No Fractional Shares to Be Issued.
               --------------------------------- 

               No fractional shares of Common Stock shall be issued upon
     conversions of Securities.  If more than one Security of any series shall
     be surrendered for conversion at one time by the same holder, the number of
     full shares which shall be issuable upon conversion thereof shall be
     computed on the basis of the aggregate principal amount of the Securities
     of such series (or specified portions thereof to the extent permitted
     hereby) so surrendered.  Instead of a fraction of a share of Common Stock
     which would otherwise be issuable upon conversion of any Security or
     Securities (or specified portions thereof), the Company shall pay a cash
     adjustment (computed to the nearest cent, with one-half cent being rounded
     upward) in respect of such fraction of a share in an amount equal to the
     same fractional interest of the reported last sales price (as defined in
     Section 1505(e)) of the Common Stock on the Trading Day (as defined in
     Section 1505(e)) next preceding the day of conversion.

Section 1507. Preservation of Conversion Rights upon Consolidation, Merger, Sale
              ------------------------------------------------------------------
              or Conveyance.
              ------------- 

          In case of any consolidation of the Company with, or merger of the
Company into, any other corporation (other than a consolidation or merger in
which the Company is the continuing corporation), or in the case of any sale or
transfer of all or substantially all of the assets of the Company, the
corporation formed by such consolidation or the corporation into which the
Company shall have been merged or the corporation which shall have acquired such
assets, as the case may be, shall execute and deliver to the Trustee a
supplemental indenture, in accordance with the provisions of
<PAGE>
 
                                       93

Articles Eight and Nine as they relate to supplemental indentures, providing
that the Holder of each Security then Outstanding of a series which was
convertible into Common Stock shall have the right thereafter to convert such
Security into the kind and amount of shares of stock and other securities and
property, including cash, receivable upon such consolidation, merger, sale or
transfer by a holder of the number of shares of Common Stock of the Company into
which such Securities might have been converted immediately prior to such
consolidation, merger, sale or transfer.  Such supplemental indenture shall
conform to the provisions of the Trust Indenture Act as then in effect and shall
provide for adjustments which shall be as nearly equivalent as may be
practicable to the adjustments provided for in this Article Fifteen.  Neither
the Trustee nor any conversion agent shall have any liability or responsibility
for determining the correctness of any provision contained in any such
supplemental indenture relating either to the kind or amount of shares of stock
or other securities or property receivable by Holders of the Securities upon the
conversion of their Securities after any such consolidation, merger, sale or
transfer, or to any adjustment to be made with respect thereto and, subject to
the provisions of Section 313 of the Trust Indenture Act, may accept as
conclusive evidence of the correctness of any such provisions, and shall be
protected in relying upon, an Officers' Certificate with respect thereto and an
Opinion of Counsel with respect to legal matters related thereto.  If in the
case of any such consolidation, merger, sale or transfer, the stock or other
securities and property receivable by a Holder of the Securities includes stock
or other securities and property of a corporation other than the successor or
purchasing corporation, then such supplemental indenture shall also be executed
by such other corporation and shall contain such additional provisions to
protect the interests of the Holders of the Securities as the Board of Directors
shall reasonably consider necessary.  The above provisions of this Section 1507
shall similarly apply to successive consolidations, mergers, sales or transfers.

Section 1508. Notice to Holders of the Securities of a Series Prior to Taking
              ---------------------------------------------------------------
              Certain Types of Action.
              ----------------------- 

          With respect to the Securities of any series, in case:

          (a)  the Company shall authorize the issuance to all holders of Common
     Stock of rights or warrants to subscribe for or purchase shares of its
     Capital Stock or of any other right;

          (b)  the Company shall authorize the distribution to all holders of
     Common Stock of evidences of indebtedness or assets (except for cash
     dividends or distributions paid from retained earnings of the Company);

          (c)  of any subdivision or combination of Common Stock or of any
     consolidation or merger to which the Company is a party and for which
     approval by the shareholders of the Company is required, or of the sale or
     transfer of all or substantially all of the assets of the Company; or

          (d)  of the voluntary or involuntary dissolution, liquidation or
     winding up of the Company;
<PAGE>
 
                                       94

then the Company shall cause to be filed with the Trustee and at the office or
agency maintained for the purpose of conversion of Securities of such series
pursuant to Section 1002, and shall cause to be mailed to the Holders of
Securities of such series, at their last addresses as they shall appear on the
Security Register of the Company, at least ten days prior to the applicable
record date hereinafter specified, a notice stating (i) the date as of which the
holders of Common Stock to be entitled to receive any such rights, warrants or
distribution are to be determined, or (ii) the date on which any such
subdivision, combination, consolidation, merger, sale, transfer, dissolution,
liquidation, winding up or other action is expected to become effective, and the
date as of which it is expected that holders of record of Common Stock shall be
entitled to exchange their Common Stock for securities or other property, if
any, deliverable upon such subdivision, combination, consolidation, merger,
sale, transfer, dissolution, liquidation, winding up or other action.  The
failure to give the notice required by this Section 1508 or any defect therein
shall not affect the legality or validity of any distribution, right, warrant,
subdivision, combination, consolidation, merger, sale, transfer, dissolution,
liquidation, winding up or other action, or the vote upon any of the foregoing.
Such notice shall also be published by and at the expense of the Company not
later than the aforesaid filing date at least once in an Authorized Newspaper.

Section 1509.  Covenant to Reserve Shares for Issuance on Conversion of
               --------------------------------------------------------
               Securities.
               ---------- 

          The Company covenants that at all times it will reserve and keep
available out of each class of its authorized Common Stock, free from preemptive
rights, solely for the purpose of issue upon conversion of Securities of any
series as herein provided, such number of shares of Common Stock as shall then
be issuable upon the conversion of all Outstanding Securities of such series.
The Company covenants that all shares of Common Stock which shall be so issuable
shall, when issued or delivered, be duly and validly issued shares of Common
Stock into which Securities of such series are convertible, and shall be fully
paid and nonassessable, free of all liens and charges and not subject to
preemptive rights and that, upon conversion, the appropriate capital stock
accounts of the Company will be duly credited.

Section 1510.  Compliance with Governmental Requirements.
               ----------------------------------------- 

          The Company covenants that if any shares of Common Stock required to
be reserved for purposes of conversion of Securities hereunder require
registration or listing with or approval of any governmental authority under any
Federal or State law, pursuant to the Securities Act of 1933, as amended, or the
Securities Exchange Act of 1934, as amended, or any national or regional
securities exchange on which Common Stock is listed at the time of delivery of
any shares of Common Stock, before such shares may be issued upon conversion,
the Company will use its best efforts to cause such shares to be duly
registered, listed or approved, as the case may be.

Section 1511.  Payment of Taxes upon Certificates for Shares Issued upon
               ---------------------------------------------------------
               Conversion.
               ---------- 

          The issuance of certificates for shares of Common Stock upon the
conversion of Securities shall be made without charge to the converting Holders
for any
<PAGE>
 
                                       95

tax (including, without limitation, all documentary and stamp taxes) in respect
of the issuance and delivery of such certificates, and such certificates shall
be issued in the respective names of, or in such names as may be directed by,
the holders of the Securities converted; provided, however, that the Company
shall not be required to pay any tax which may be payable in respect of any
transfer involved in the issuance and delivery of any such certificate in a name
other than that of the Holder of the Security converted, and the Company shall
not be required to issue or deliver such certificate unless or until the Person
or Persons requesting the issuance thereof shall have paid to the Company the
amount of such tax or shall have established to the satisfaction of the Company
that such tax has been paid.

Section 1512.  Trustee's Duties with Respect to Conversion Provisions.
               ------------------------------------------------------ 

          The Trustee and any conversion agent shall have no duty,
responsibility or liability to any Holder to determine whether any facts exist
which may require any adjustment of the conversion rate, or with respect to the
nature or extent of any such adjustment when made, or with respect to the method
employed, or herein or in any supplemental indenture provided to be employed, in
making the same.  Neither the Trustee nor any conversion agent shall be
accountable with respect to the registration under securities laws, listing,
validity or value (or the kind or amount) of any shares of Common Stock, or of
any other securities or property, which may at any time be issued or delivered
upon the conversion of any Security; and neither the Trustee nor any conversion
agent makes any representation with respect thereto.  Neither the Trustee nor
any conversion agent shall be responsible for any failure of the Company to make
any cash payment or to issue, transfer or deliver any shares of stock or stock
certificates or other securities or property upon the surrender of any Security
for the purpose of conversion; and the Trustee and any conversion agent, subject
to the provisions of Section 313 of the Trust Indenture Act, shall not be
responsible for any failure of the Company to comply with any of the covenants
of the Company contained in this Article Fifteen.


                                ARTICLE SIXTEEN

                          Subordination of Securities

Section 1601. Securities Subordinate to Senior Indebtedness.
              --------------------------------------------- 

          The Company covenants and agrees, and each Holder of a Security, by
his acceptance thereof, likewise covenants and agrees, that the payment of the
principal of (and premium, if any, and Additional Amounts, if any) and interest,
if any, on each and all of the Securities is hereby expressly subordinated, to
the extent and in the manner hereinafter set forth in this Article, to the prior
payment in full of all Senior Indebtedness.

Section 1602.  Payment Over of Proceeds upon Dissolution, Etc.
               ---------------------------------------------- 

          In the event of (a) any insolvency or bankruptcy case or proceeding,
or any receivership, liquidation, reorganization or other similar case or
proceeding in connection
<PAGE>
 
                                       96

therewith, relative to the Company or to its creditors, as such, or to its
assets, or (b) any liquidation, dissolution or other winding up of the Company,
whether voluntary or involuntary and whether or not involving insolvency or
bankruptcy, or (c) any assignment for the benefit of creditors or any other
marshalling of assets and liabilities of the Company, then and in any such event
the holders of all Senior Indebtedness shall be entitled to receive payment in
full of all amounts due on or in respect of all Senior Indebtedness, or
provision shall be made for such payment in money or money's worth, before the
Holders of the Securities are entitled to receive any payment on account of
principal of (or premium,  if any, or Additional Amounts, if any) or interest,
if any, on the Securities, and to that end the holders of Senior Indebtedness
shall be entitled to receive, for application to the payment thereof, any
payment or distribution of any kind or character, whether in cash, property or
securities, which may be payable or deliverable in respect of the Securities in
any such case, proceeding, dissolution, liquidation or other winding up or
event.

          In the event that, notwithstanding the foregoing provisions of this
Section, the Trustee or Holder of any Security shall have received any payment
or distribution of assets of the Company of any kind or character, whether in
cash, property or securities before all Senior Indebtedness is paid in full or
payment thereof provided for, and if such fact shall, at or prior to the time of
such payment or distribution, have been made known to a Responsible Officer of
the Trustee or, as the case may be, such Holder, then and in such event such
payment or distribution shall be paid over or delivered forthwith to the trustee
in bankruptcy, receiver, liquidating trustee, custodian, assignee, agent or
other Person making payment or distribution of assets of the Company for
application to the payment of all Senior Indebtedness remaining unpaid, to the
extent necessary to pay all Senior Indebtedness in full, after giving effect to
any concurrent payment or distribution to or for the holders of Senior
Indebtedness.

          For purposes of this Article only, the words "cash, property or
securities" shall not be deemed to include shares of stock of the Company as
reorganized or readjusted, or securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment which are subordinated
in right of payment to all Senior Indebtedness which may at the time be
outstanding to the same extent as, or to a greater extent than, the Securities
are so subordinated as provided in this Article.  The consolidation of the
Company with, or the merger of the Company into, another Person or the
liquidation or dissolution of the Company following the conveyance or transfer
of its properties and assets substantially as an entirety to another Person upon
the terms and conditions set forth in Article Eight shall not be deemed a
dissolution, winding up, liquidation, reorganization, assignment for the benefit
of creditors or marshalling of assets and liabilities of the Company for the
purposes of this Section if the Person formed by such consolidation or into
which the Company is merged or the Person which acquires by conveyance or
transfer such properties and assets substantially as an entirety, as the case
may be, shall, as a part of such consolidation, merger, conveyance or transfer,
comply with the conditions set forth in Article Eight.
<PAGE>
 
                                       97

Section 1603.  No Payment When Senior Indebtedness in Default.
               ---------------------------------------------- 

          (a)  In the event and during the continuation of any default in the
payment of principal of (or premium, if any) or interest on any Senior
Indebtedness beyond any applicable grace period with respect thereto, or in the
event that any event of default with respect to any Senior Indebtedness shall
have occurred and be continuing permitting the holders of such Senior
Indebtedness (or a trustee on behalf of the holders thereof) to declare such
Senior Indebtedness due and payable prior to the date on which it would
otherwise have become due and payable, unless and until such event of default
shall have been cured or waived or shall have ceased to exist and such
acceleration shall have been rescinded or annulled, or (b) in the event any
judicial proceeding shall be pending with respect to any such default in
payment, or event of default, then no payment shall be made by the Company on
account of principal of (or premium, if any) or interest, if any, or Additional
Amounts, if any, on the Securities or on account of the purchase or other
acquisition of Securities; provided, however, that if as specified as
contemplated by Section 301 Article Twelve is applicable to any series of
Securities, nothing in this Section shall prevent the satisfaction of any
sinking fund payment in accordance with Article Twelve by delivering and
crediting pursuant to Section 1202 Securities of such series which have been
acquired (upon redemption or otherwise) prior to such default in payment or
event of default.

          In the event that, notwithstanding the foregoing, the Company shall
make any payment to the Trustee or the Holder of any Security prohibited by the
foregoing provisions of this Section, and if such fact shall, at or prior to the
time of such payment, have been made known to a Responsible Officer of the
Trustee or, as the case may be, such Holder, then and in such event such payment
shall be paid over and delivered forthwith to the Company.

          The provisions of this Section shall not apply to any payment with
respect to which Section 1602 would be applicable.

Section 1604.  Payment Permitted if No Default.
               ------------------------------- 

          Nothing contained in this Article or elsewhere in this Indenture or in
any of the Securities shall prevent (a) the Company, at any time except during
the pendency of any case, proceeding, dissolution, liquidation or other winding
up, assignment for the benefit of creditors or other marshalling of assets and
liabilities of the Company referred to in Section 1602 or under the conditions
described in Section 1603, from making payments at any time of principal of (and
premium, if any, or Additional Amounts, if any) or interest on the Securities,
or (b) the application by the Trustee of any moneys deposited with it hereunder
to the payment of or on account of the principal of (or premium, if any, or
Additional Amounts, if any) or interest on the Securities or the retention by
the Holder, if, at the time of such application by the Trustee, a Responsible
Officer did not have knowledge that such payment would have been prohibited by
the provisions of this Article.
<PAGE>
 
                                       98

Section 1605.  Subrogation to Rights of Holders of Senior Indebtedness.
               ------------------------------------------------------- 

          Subject to the payment in full of all Senior Indebtedness, the Holders
of the Securities shall be subrogated (equally and ratably with the holders of
all Existing Subordinated Indebtedness and all indebtedness of the Company which
by its express terms is subordinated to indebtedness of the Company to
substantially the same extent as the Securities or the Existing Subordinated
Indebtedness are subordinated and is entitled to like rights of subrogation) to
the extent of the payments or distributions made to the holders of such Senior
Indebtedness pursuant to the provisions of this Article to the rights of the
holders of such Senior Indebtedness to receive payments and distributions of
cash, property and securities applicable to the Senior Indebtedness until the
principal of (and premium, if any) and interest on the Securities shall be paid
in full.  For purposes of such subrogation, no payments or distributions to the
holders of the Senior Indebtedness of any cash, property or securities to which
the Holders of the Securities or the Trustee would be entitled except for the
provisions of this Article and no payments over pursuant to the provisions of
this Article to the holders of Senior Indebtedness by Holders of the Securities
or the Trustee, shall, as among the Company, its creditors other than holders of
Senior Indebtedness and the Holders of the Securities, be deemed to be a payment
or distribution by the Company to or on account of the Senior Indebtedness.

Section 1606.  Provisions Solely to Define Relative Rights.
               ------------------------------------------- 

          The provisions of this Article are and are intended solely for the
purpose of defining the relative rights of the Holders of the Securities on the
one hand and the holders of Senior Indebtedness (and, in the case of Section
1614, the holders of Existing Subordinated Indebtedness and Entitled Persons in
respect of Other Senior Obligations) on the other hand.  Nothing contained in
this Article or elsewhere in this Indenture or in the Securities is intended to
or shall (a) impair, as among the Company, its creditors other than holders of
Senior Indebtedness and the Holders of the Securities, the obligation of the
Company, which is absolute and unconditional, to pay to the Holders of the
Securities the principal of (and premium, if any, or Additional Amounts, if any)
and interest on the Securities as and when the same shall become due and payable
in accordance with their terms; (b) affect the relative rights against the
Company of the Holders of the Securities and creditors of the Company other than
the holders of Senior Indebtedness and of Existing Subordinated Indebtedness; or
(c) prevent the Trustee or the Holder of any Security from exercising all
remedies otherwise permitted by applicable law upon default under this
Indenture, subject to the rights, if  any, under this Article of the holders of
Senior Indebtedness, and under Section 1614 of Entitled Persons in respect of
Other Senior Obligations, to receive cash, property and securities otherwise
payable or deliverable to the Trustee or such Holder.

Section 1607.  Trustee to Effectuate Subordination and Payment Provisions.
               ---------------------------------------------------------- 

          Each Holder of a Security by his acceptance thereof authorizes and
directs the Trustee on his behalf to take such action as may be necessary or
appropriate to effectuate the subordination and payment provisions provided in
this Article and appoints the Trustee his attorney-in-fact for any and all such
purposes.
<PAGE>
 
                                       99

Section 1608.  No Waiver of Subordination Provisions.
               ------------------------------------- 

          No right of any present or future holder of any Senior Indebtedness to
enforce subordination as herein provided shall at any time in any way be
prejudiced or impaired by any failure to act on the part of the Company or by
any failure to act, in good faith, by any such holder, or by any non-compliance
by the Company with the terms, provisions and covenants of this Indenture,
regardless of any knowledge thereof any such holder may have or be otherwise
charged with.

          Without in any way limiting the generality of the foregoing paragraph,
the holders of Senior Indebtedness may, at any time and from time to time,
without the consent of or notice to the Trustee or the Holders of the
Securities, without incurring responsibilities to the Holders of the Securities
and without impairing or releasing the subordination provided in this Article or
the obligations hereunder of the Holders of the Securities to the holders of
Senior Indebtedness, do any one or more of the following: (i) change the manner,
place or terms of payment or extend the time of payment of, or renew or alter,
Senior Indebtedness, or otherwise amend or supplement in any manner Senior
Indebtedness or any instrument evidencing the same or any agreement under which
Senior Indebtedness is outstanding; (ii) sell, exchange, release or otherwise
deal with any property pledged, mortgaged or otherwise securing Senior
Indebtedness; (iii) release any Person liable in any manner for the collection
of Senior Indebtedness; and (iv) exercise or refrain from exercising any rights
against the Company and any other Person.

Section 1609.  Notice to Trustee.
               ----------------- 

          The Company shall give prompt written notice to the Trustee of any
fact known to the Company which would prohibit the making of any payment to or
by the Trustee in respect of the Securities.  Notwithstanding the provisions of
this Article or any other provision of this Indenture, the Trustee shall not be
charged with knowledge of the existence of any facts which would prohibit the
making of any payment to or by the Trustee in respect of the Securities, unless
and until the Trustee shall have received written notice thereof from the
Company or a holder of Senior Indebtedness or from any trustee therefor or from
any Entitled Persons in respect of Other Senior Obligations, and, prior to the
receipt of any such written notice, the Trustee, subject to the provisions of
Section 601, shall be entitled in all respects to assume that no such facts
exist; provided, however, that if the Trustee shall not have received the notice
provided for in this Section at least two Business Days prior to the date upon
which by the terms hereof any money may become payable for any purpose
(including, without limitation, the payment of the principal (and premium, if
any, or Additional Amounts, if any) or interest on any Security), then, anything
herein contained to the contrary notwithstanding, the Trustee shall have full
power and authority to receive such money and to apply the same to the purpose
for which such money was received and shall not be affected by any notice to the
contrary which may be received by it within two Business Days prior to such
date.

          Subject to the provisions of Section 601, the Trustee shall be
entitled to rely on the delivery to it of a written notice by a Person
representing himself to be a holder of Senior Indebtedness (or a trustee
therefor) or an Entitled Person in respect of Other Senior
<PAGE>
 
                                      100

Obligations to establish that such notice has been given by a holder of Senior
Indebtedness (or a trustee therefor) or an Entitled Person in respect of Other
Senior Obligations.  In the event that the Trustee determines in good faith that
further evidence is required with respect to the right of any Person as a holder
of Senior Indebtedness or an Entitled Person in respect of Other Senior
Obligations to participate in any payment or distribution pursuant to this
Article, the Trustee may request such Person to furnish evidence to the
reasonable satisfaction of the Trustee as to the amount of Senior Indebtedness
or Other Senior Obligations held by such Person, the extent to which such Person
is entitled to participate in such payment or distribution and any other facts
pertinent to the rights of such Person under this Article, and if such evidence
is not furnished, the Trustee may defer any payment or distribution to such
Person pending judicial determination as to the right of such Person to receive
such payment.

Section 1610.  Reliance on Judicial Order or Certificate of Liquidating Agent.
               -------------------------------------------------------------- 

          Upon any payment or distribution of assets of the Company referred to
in this Article, the Trustee and the Holders of the Securities shall be entitled
to rely upon any order or decree entered by any court of competent jurisdiction
in which such insolvency, bankruptcy, receivership, liquidation, reorganization,
dissolution, winding up or similar case or proceeding is pending, or a
certificate of the trustee in bankruptcy, receiver, liquidating trustee,
custodian, assignee for the benefit of creditors, agent or other Person making
such payment or distribution, delivered to the Trustee or to the Holders of
Securities, for the purpose of ascertaining the Persons entitled to participate
in such payment or distribution, the holders of the Senior Indebtedness and
other indebtedness of the Company and the Entitled Persons in respect of Other
Senior Obligations, the amount thereof or payable thereon, the amount or amounts
paid or distributed thereon and all other facts pertinent thereto or to this
Article.

Section 1611.  Trustee Not Fiduciary for Holders of Senior Indebtedness or
               -----------------------------------------------------------
               Entitled Persons.
               ----------------  

          The Trustee shall not be deemed to owe any fiduciary duty to the
holders of Senior Indebtedness or Entitled Persons in respect of Other Senior
Obligations and shall not be liable to any such holders or creditors if it shall
in good faith pay over or distribute to Holders of Securities or to the Company
or to any other Person cash, property or securities to which any holders of
Senior Indebtedness or Entitled Persons in respect of Other Senior Obligations
shall be entitled by virtue of this Article or otherwise.

Section 1612.  Rights of Trustee as Holder of Senior Indebtedness or Entitled
               --------------------------------------------------------------
               Person; Preservation of Trustee's Rights.
               ----------------------------------------  

          The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article with respect to any Senior Indebtedness which
may at any time be held by it and with respect to any Other Senior Obligations
owed to the Trustee as an Entitled Person, to the same extent as any other
holder of Senior Indebtedness or Entitled Person in respect of Other Senior
Obligations, as the case may be, and nothing in this Indenture shall deprive the
Trustee of any of its rights as such holder or Entitled Person.
<PAGE>
 
                                      101

          Nothing in this Article shall apply to claims of, or payments to, the
Trustee under or pursuant to Section 606.

Section 1613.  Article Applicable to Paying Agents.
               ----------------------------------- 

          In case at any time any Paying Agent other than the Trustee shall have
been appointed by the Company and be then acting hereunder, the term "Trustee"
as used in this Article shall in such case (unless the context otherwise
requires) be construed as extending to and including such Paying Agent within
its meaning as fully for all intents and purposes as if such Paying Agent were
named in this Article in addition to or in place of the Trustee; provided,
however, that Section 1612 shall not apply to the Company or any Affiliate of
the Company if it or such Affiliate acts as Paying Agent.

Section 1614.  Relationship to Existing Subordinated Indebtedness; Payment of
               --------------------------------------------------------------
Excess Proceeds in Certain Cases.
- - --------------------------------  
 
          (a)  The Securities shall not be superior in right of payment to any
of the Existing Subordinated Indebtedness and the obligations of the Company
evidenced by the Securities shall not constitute "senior indebtedness" as
defined in the Society Subordinated Indenture or in the Old KeyCorp Subordinated
Indentures, or in any other indenture or other instrument or document
establishing or governing the terms of any other Existing Subordinated
Indebtedness.

          (b)  Upon the occurrence of any of the events specified in clauses
(a), (b) and (c) of the first paragraph of Section 1602, the provisions of that
Section and the corresponding provisions of each indenture or other instrument
or document establishing or governing the terms of any Existing Subordinated
Indebtedness shall be given effect in accordance with their respective terms to
determine the amount of cash, property or securities which may be payable or
deliverable as among the holders of Senior Indebtedness and the holders of
"senior indebtedness", as defined in such indentures, instruments and documents,
on the one hand, and the Holders of Securities and holders of Existing
Subordinated Indebtedness, on the other hand.  To the extent that the Securities
and any Existing Subordinated Indebtedness rank equally and pari passu, the
provisions of Section 1602 and the corresponding provisions of the indenture or
other instrument or document establishing or governing the terms of such
Existing Subordinated Indebtedness shall be given effect on a pro rata basis to
determine the amount of cash, property or securities which may be payable or
deliverable as between the holders of Senior Indebtedness and the holders of
"senior indebtedness", as defined in such indentures, instruments and documents,
on the one hand, and the Holders of Securities and holders of such Existing
Subordinated Indebtedness, on the other hand.

          (c)  If, after giving effect, to the extent applicable, to the
provisions of Section 1602, Section 1605, Section 1614(b) and the respective
corresponding provisions of each indenture or other instrument or document
establishing or governing the terms of any Existing Subordinated Indebtedness,
any amount of cash, property or securities shall be available for payment or
distribution in respect of the Securities ("Excess Proceeds"), and any Entitled
Persons in respect of Other Senior Obligations shall not have received
<PAGE>
 
                                      102

payment in full of all amounts due on or in respect of such Other Senior
Obligations (and provision shall not have been made for such payment in money or
money's worth), then such Excess Proceeds shall first be applied (ratably with
any amount of cash, property or securities available for payment or distribution
in respect of any other indebtedness of the Company that by its express terms
provides for the payment over of amounts corresponding to Excess Proceeds to
Entitled Persons in respect of Other Senior Obligations) to pay or provide for
the payment of the Other Senior Obligations remaining unpaid, to the extent
necessary to pay all Other Senior Obligations in full, after giving effect to
any concurrent payment or distribution to or for Entitled Persons in respect of
Other Senior Obligations.  Any Excess Proceeds remaining after the payment (or
provision for payment) in full of all Other Senior Obligations shall be
available for payment or distribution in respect of the Securities.

          (d)  In the event that, notwithstanding the foregoing provisions of
subsection (c) of this Section, the Trustee or Holder of any Security shall have
received any payment or distribution of assets of the Company of any kind or
character, whether in cash, property or securities, before all Other Senior
Obligations are paid in full or payment thereof duly provided for, and if such
fact shall, at or prior to the time of such payment or distribution have been
made known to a Responsible Officer of the Trustee or, as the case may be, such
Holder, then and in such event, subject to any obligation that the Trustee or
such Holder may have pursuant to Section 1602, such payment or distribution
shall be paid over or delivered forthwith to the trustee in bankruptcy,
receiver, liquidating trustee, custodian, assignee, agent or other Person making
payment or distribution of assets of the Company for payment in accordance with
subsection (c).

          (e)  Subject to the payment in full of all Other Senior Obligations,
the Holders of the Securities shall be subrogated (equally and ratably with the
holders of all indebtedness of the Company that by its express terms provides
for the payment over of amounts corresponding to Excess Proceeds to Entitled
Persons in respect of Other Senior Obligations and is entitled to like rights of
subrogation) to the extent of the payments or distributions made to Entitled
Persons in respect of Other Senior Obligations pursuant to subsection (c) or (d)
of this Section to the rights of the Entitled Persons in respect of Other Senior
Obligations to receive payments and distributions of cash, property and
securities applicable to the Other Senior Obligations until the principal of
(and premium, if any) and interest on the Securities shall be paid in full.  For
purposes of such subrogation, no payments or distributions to Entitled Persons
in respect of Other Senior Obligations of any cash, property or securities to
which Holders of the Securities or the Trustee would be entitled except for the
provisions of this Section, and no payments over pursuant to the provisions of
this Section to Entitled Persons in respect of Other Senior Obligations by
Holders of Securities or the Trustee, shall, as among the Company, its creditors
other than Entitled Persons in respect of Other Senior Obligations and the
Holders of Securities be deemed to be a payment or distribution by the Company
to or on account of the Other Senior Obligations.

          (f)  The provisions of subsections (c), (d) and (e) of this Section
are and are intended solely for the purpose of defining the relative rights of
the Holders of the Securities, on the one hand, and the Entitled Persons in
respect of Other Senior
<PAGE>
 
                                      103

Obligations, on the other hand, after giving effect to the rights of the holders
of Senior Indebtedness, as provided in this Article.  Nothing contained in
subsections (c), (d) and (e) of this Section is intended to or shall affect the
relative rights against the Company of the Holders of the Securities and (1) the
holders of Senior Indebtedness, (2) the holders of Existing Subordinated
Indebtedness or (3) other creditors of the Company other than Entitled Persons
in respect of Other Senior Obligations.


                               ARTICLE SEVENTEEN

                       Repayment at the Option of Holders

Section 1701.  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 terms of such
Securities and (except as otherwise specified by the terms of such series
established pursuant to Section 301) in accordance with this Article.

Section 1702.  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 the Repayment Price thereof, together with
interest, if any, thereon accrued to the Repayment Date specified in or pursuant
to the terms of such Securities. The Company covenants that on or before the
Repayment Date it will deposit with the Trustee or with a Paying Agent (or, if
the Company 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 and except, if applicable, as
provided in Sections 312(b), 312(d) and 312(e)) sufficient to pay the 
Repayment Price 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 1703.  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.  To be repaid at the option of the Holder, any Security so
providing for such repayment, with the "Option to Elect Repayment" form on the
reverse of such Security duly completed by the Holder (or by the Holder's
attorney duly authorized in writing), must be received by the Company at the
Place of Payment therefor specified in the terms of such Security (or at such
other place or places of which the Company shall from time to time notify the
Holders of such Securities) not earlier than 45 days nor later than 30 days
prior to the Repayment Date.  If less than the entire Repayment Price of such

<PAGE>
 
                                      104
    
Security is to be repaid in accordance with the terms of such Security, the
portion of the Repayment Price 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 such Security surrendered that is not to be repaid, must be
specified. 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 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
Company.      

Section 1704.  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 Company on the Repayment Date therein
specified, and on and after such Repayment Date (unless the Company 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
Company, 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 Company 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 1702 an amount equal to the face amount of all such missing
coupons, or the surrender of such missing coupon or coupons may be waived by the
Company and the Trustee if there be furnished to them such security or indemnity
as they may require to save each of them and any Paying Agent harmless.  If
thereafter the Holder of such 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
<PAGE>
 
                                      105

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 surrendered for repayment shall not be so repaid upon 
surrender thereof, the Repayment Price (together with interest, if any,
thereon accrued to such Repayment Date) shall, until paid, bear interest from
the Repayment Date at the rate of interest set forth in such Security or, in the
case of an Original Issue Discount Security, at the Yield of Maturity of such
Security.      

Section 1705.  Securities Repaid in Part.
              --------------------------  

          Upon surrender of any Registered Security which is to be repaid in
part only, the Company shall execute and the Trustee shall authenticate and
deliver to the Holder of such Security, without service charge and at the
expense of the Company, 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.

                             ----------------------
<PAGE>
 
                                      106

          This instrument 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 instrument.

          IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                               KEYCORP


                               By /s/ Carter B. Chase
                                  ------------------------------

Attest:

/s/ Daniel R. Stolzer
- - ------------------------------


                               BANKERS TRUST COMPANY


                               By /s/ Jenna Rossheim
                                  ------------------------------


Attest:

 /s/ Susan Gaon
- - ------------------------------
<PAGE>
 
STATE OF OHIO            )
                         )     ss.:
COUNTY OF CUYAHOGA       )



          On the 14th day of June, 1994, before me personally came Carter B.
Chase, to me known, who, being by me duly sworn, did depose and say that he is
E.V.P., Gen. Counsel & Secretary of KeyCorp, one of the corporations described
in and which executed the foregoing instrument; that he knows the seal of said
corporation; that the seal affixed to said instrument is such corporate seal;
that it was so affixed by authority of the Board of Directors of said
corporation, and that he signed his name thereto by like authority.

                         /s/ Janet M. Golem
                         ----------------------------
                         Janet M. Golem, Notary Public
                         My comm. exp. 11/4/95


STATE OF NEW YORK        )
                         )     ss.:
COUNTY OF NEW YORK       )



          On the ____ day of _________________________, 1994, before me
personally came __________________________, to me known, who, being by me duly
sworn, did depose and say that he is a Trust Officer of Bankers Trust Company,
one of the corporations described in and which executed the foregoing
instrument; that he knows the seal of said corporation; that the seal affixed to
said instrument is such corporate seal; that it was so affixed by authority of
the Board of Directors of said corporation, and that he signed his name thereto
by like authority.


                         ----------------------------
<PAGE>
 
STATE OF OHIO            )
                         )     ss.:
COUNTY OF CUYAHOGA       )



          On the ____ day of _________________________, 1994, before me
personally came _________________________, to me known, who, being by me duly
sworn, did depose and say that he is _____________________ of KeyCorp, one of
the corporations described in and which executed the foregoing instrument; that
he knows the seal of said corporation; that the seal affixed to said instrument
is such corporate seal; that it was so affixed by authority of the Board of
Directors of said corporation, and that he signed his name thereto by like
authority.


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



STATE OF NEW YORK        )
                         )     ss.:
COUNTY OF NEW YORK       )



          On the 20th day of July, 1994, before me personally came Jenna
Rossheim, to me known, who, being by me duly sworn, did depose and say that she
is an Assistant Vice President of Bankers Trust Company, one of the corporations
described in and which executed the foregoing instrument; that she knows the
seal of said corporation; that the seal affixed to said instrument is such
corporate seal; that it was so affixed by authority of the Board of Directors of
said corporation, and that she signed her name thereto by like authority.

                         /s/ Margaret Bereza
                         ----------------------------
                         Margaret Bereza
                         Notary Public - State of New York
                         No. 31-5023900
                         Qualified New York County                         
                         Commission Expires 2/22/96
<PAGE>
 
                                   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 persons(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 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 United States financial
institution hereby agrees, on its own behalf or through its agent, that you may
advise [Name of Issuer] 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>
 
          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:

[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 Signatory)
                                   -------------------- 
                                  Name:
                                  Title:



                                     A-1-2
<PAGE>
 
                                  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 [Name of Issuer] 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 the above-captioned Securities excepted
in the above-referenced certificates of
<PAGE>
 
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:

[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 COMPANY OF NEW YORK,
                                  BRUSSELS OFFICE, as Operator of the Euroclear
                                  System]
                                  [CEDEL]


                                  By
                                    -------------------------------------------


                                     A-2-2


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