WEEKS REALTY L P
8-A12B, 1998-03-18
OPERATORS OF NONRESIDENTIAL BUILDINGS
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C.  20549
                                  ___________

                                    FORM 8-A

               FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12(b) OR (g) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

                              Weeks Realty, L.P.
            ------------------------------------------------------
            (Exact Name of Registrant as Specified in Its Charter)
 
 
               Georgia                                  58-2121388
- ----------------------------------------    ------------------------------------
(State of Incorporation or Organization)    (I.R.S. Employer Identification No.)
 
           4497 Park Drive
          Norcross, Georgia                                30093
- ------------------------------------------  -----------------------------------
  (Address of Principal Executive Offices)              (Zip Code)

<TABLE> 
<S>                                                        <C> 
If this form relates to the registration of a class of    If this form relates to the registration of a
 securities pursuant to Section 12(b) of the              class of securities pursuant to Section 12(g) of
 Exchange Act and is effective upon filing pursuant       the Exchange Act and is effective pursuant to
 to General Instruction A.(c), please check the           General Instruction A.(d), please check the
 following box. /X/                                       following box.  /   /
</TABLE>

Securities Act Registration file number to which this form relates:    333-32755
                                                                       ---------
 
Securities to be registered pursuant to Section 12(b) of the Act:

                                                     Name of Each Exchange on
         Title of Each Class to                      Which Each Class is to
            be so Registered                                be Registered
- ---------------------------------------       ----------------------------------

     6 7/8% Notes due March 15, 2005              New York Stock Exchange, Inc.
- ---------------------------------------       ----------------------------------

Securities to be registered pursuant to Section 12(g) of the Act:


- -------------------------------------------------------------------------------
                                (Title of Class)
<PAGE>
 
Item 1.   Description of Registrant's Securities to be Registered.
          ------------------------------------------------------- 

         A description of the 6 7/8% Notes due March 15, 2005 of Weeks Realty,
L.P., a Georgia limited partnership (the "Partnership"), is set forth under
"Description of Notes," appearing on pages S-26 through S-31 of the Prospectus
Supplement dated March 17, 1998, to the Prospectus dated October 1, 1997,
contained in the Partnership's and Weeks Corporation's Registration Statement on
Form S-3 (File No. 333-32755), and under "Description of Debt Securities,"
appearing on pages 12 through 25 of the accompanying Prospectus, which, together
with the Prospectus Supplement, will be filed by the Partnership with the
Securities and Exchange Commission (the "Commission") pursuant to Rule 424(b)
under the Securities Act of 1933, as amended, and which description is
incorporated herein by this reference and qualified in its entirety by reference
to the Partnership's Note and Indenture, each of which is attached as an exhibit
hereto.
 
Item 2.   Exhibits.
          -------- 

     As required by the Instruction to Item 2, the following exhibits will be
supplied to the New York Stock Exchange, Inc. and are filed herewith:
 
           1. Specimen 6 7/8% Note due March 15, 2005.

           2. Form of Indenture, by and between the Partnership and State 
              Street Bank and Trust Company, as Trustee.

                                      -2-
<PAGE>
 
                                   SIGNATURE

     Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, the registrant has duly caused this Registration Statement to be signed
on its behalf by the undersigned, thereto duly authorized.

                                  WEEKS REALTY, L.P.


                                  By:  WEEKS GP HOLDINGS, INC.,
                                       its sole General Partner


                                  By:  /s/ David P. Stockert
                                     --------------------------------
                                      David P. Stockert
                                      Senior Vice President and
                                      Chief Financial Officer

Dated: March 17, 1998

                                      -3-
<PAGE>
 
                                   Exhibits
                                   --------


Exhibit                                                                    Page
- -------                                                                    ----

 
 
 
1.   Specimen 6 7/8% Note due March 15, 2005.

2.   Form of Indenture, by and between the Partnership and State Street Bank 
     and Trust Company, as Trustee.

                                      -4-

<PAGE>


                                                                       Exhibit 1
 
THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF CEDE & CO. AS NOMINEE
FOR THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC").  UNLESS THIS
SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF DTC TO WEEKS REALTY,
L.P. OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY
SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS
IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.


                               WEEKS REALTY, L.P.

                         6 7/8% Note due March 15, 2005

No. 1

CUSIP NO. 948571 AA 2                                             $ 100,000,000


     Weeks Realty, L.P., a limited partnership duly organized and existing under
the laws of Georgia (herein called the "Company," which term includes any
successor Person under the Indenture hereinafter referred to), for value
received, hereby promises to pay to Cede & Co., or registered assigns, the
principal sum of One Hundred Million Dollars on March 15, 2005, and to pay
interest thereon from March 20, 1998 or from the most recent Interest Payment
Date to which interest has been paid or duly provided for, semi-annually on
September 15 and March 15 in each year, commencing September 15, 1998 at the
rate of 6 7/8% per annum, until the principal hereof is paid or made available
for payment. The interest so payable, and punctually paid or duly provided for,
on any Interest Payment Date will, as provided in such Indenture, be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest, which shall be the September 1 or March 1 (whether or not a Business
Day), as the case may be, next preceding such Interest Payment Date. Any such
interest not so punctually paid or duly provided for will forthwith cease to be
payable to the Holder on such Regular Record Date and may either be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on a Special Record Date for the payment of
such Defaulted Interest to be fixed by the Trustee, notice whereof shall be
given to Holders of Securities of this series not less than 10 days prior to
such Special Record Date, or be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities of this series may be listed, and upon such notice as may be required
by such exchange, all as more fully provided in said Indenture.
<PAGE>
 
     This Security is a "book-entry" security and is being registered in the
name of Cede & Co. as nominee of DTC, a clearing agency.  Subject to the terms
of the Indenture, this Security will be held by a clearing agency or its
nominee, and beneficial interests will be held by beneficial owners through the
book-entry facilities of such clearing agency or its nominee in minimum
denominations of $1,000 and increments of $1,000 in excess thereof.

     Payment of the principal of (and premium, if any) and interest on this
Security will be made at the Corporate Trust Office of the Trustee maintained
for that purpose at Two International Place, Fourth Floor, Boston, Massachusetts
02110, in such coin or currency of the United States of America as at the time
of payment is legal tender for payment of public and private debts.

     As long as this Security is registered in the name of DTC or its nominee,
the Trustee will make payments of principal of (and premium, if any) and
interest on this Security by wire transfer of immediately available funds to DTC
or its nominee.  Notwithstanding the above, the final payment on this Security
will be made after due notice by the Trustee of the pendency of such payment and
only upon presentation and surrender of this Security at the Trustee's Corporate
Trust Office or such other offices or agencies appointed by the Trustee for that
purpose and such other locations provided pursuant to the Indenture.

     Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

     IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

Dated: March 20, 1998


                                  WEEKS REALTY, L.P.

                                  By: Weeks GP Holdings, Inc., its general
                                      partner


                                  By:______________________________
                                     Name:
                                     Title:


_______________________________
Attest:

                                      -2-
<PAGE>
 
                              REVERSE OF SECURITY

     This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued and to be issued in one or more
series under an Indenture, dated as of March 20, 1998 (herein called the
"Indenture", which term shall have the meaning assigned to it in such
instrument), between the Company and State Street Bank and Trust Company, as
Trustee (herein called the "Trustee", which term includes any successor trustee
under the Indenture), and reference is hereby made to the Indenture for a
statement of the respective rights, limitations of rights, duties and immunities
thereunder of the Company, the Trustee and the Holders of the Securities and of
the terms upon which the Securities are, and are to be, authenticated and
delivered. This Security is one of the series designated on the face hereof,
limited in aggregate principal amount to $100,000,000.

     The Securities of this series may be redeemed at any time at the option of
the Company, in whole or from time to time in part, at a redemption price (the
"Redemption Price") equal to the sum of (A) the principal amount of the
Securities of this series (or portion thereof being redeemed) plus accrued
interest thereon to the redemption date and (B) the Make-Whole Amount (as
defined below), if any, with respect to such Securities of this series (or
portion thereof).

     If notice has been given as provided in the Indenture and funds for the
redemption of any Securities of this series (or any portion thereof) called for
redemption shall have been made available on the redemption date referred to in
such notice, such Securities of this series (or any portion thereof) will cease
to bear interest on the date fixed for such redemption specified in such notice
and the only right of the Holders of the Securities of this series will be to
receive payment of the Redemption Price.

     Notice of any optional redemption of any Securities of this series (or any
portion thereof) will be given to Holders at their addresses, as shown in the
Security Register, not more than 60 nor less than 30 days prior to the date
fixed for redemption.  The notice of redemption will specify, among other items,
the Redemption Price and the principal amount of the Securities of this series
held by such Holder to be redeemed.

     The Company will notify the Trustee at least 60 days prior to giving notice
of redemption (or such shorter period as is satisfactory to the Trustee) of the
aggregate principal amount of Securities of this series to be redeemed and their
redemption date.  If less than all the Securities of this series are to be
redeemed at the option of the Company, the Trustee shall select, in such manner
as it shall deem fair and appropriate, the Securities of this series to be
redeemed in whole or in part.

     In the event of redemption of this Security in part only, a new Security or
Securities of this series and of like tenor for the unredeemed portion hereof
will be issued in the name of the Holder hereto upon the cancellation hereof.

                                      -3-
<PAGE>
 
     As used herein:

     "Make-Whole Amount" means, in connection with any optional redemption or
accelerated payment of any Security of this series, the excess, if any, of (i)
the aggregate present value as of the date of such redemption or accelerated
payment of each dollar of principal being redeemed or paid and the amount of
interest (exclusive of interest accrued to the date of redemption or accelerated
payment) that would have been payable in respect of each such dollar if such
redemption or accelerated payment had not been made, determined by discounting,
on a semiannual basis, such principal and interest at the Reinvestment Rate
(determined on the third Business Day preceding the date such notice of
redemption is given or declaration of acceleration is made) from the respective
dates on which such principal and interest would have been payable if such
redemption or accelerated payment had not been made, over (ii) the aggregate
principal amount of the Securities of this series being redeemed or paid.

     "Reinvestment Rate" means 0.25% plus the arithmetic mean of the yields
under the respective heading "Week Ending" published in the most recent
Statistical Release under the caption "Treasury Constant Maturities" for the
maturity (rounded to the nearest month) corresponding to the remaining life to
maturity, as of the payment date of the principal being redeemed or paid.  If no
maturity exactly corresponds to such maturity, yields for the two published
maturities most closely corresponding to such maturity shall be calculated
pursuant to the immediately preceding sentence and the Reinvestment Rate shall
be interpolated or extrapolated from such yields on a straight-line basis,
rounding in each of such relevant periods to the nearest month.  For the purpose
of calculating the Reinvestment Rate, the most recent Statistical Release
published prior to the date of determination of the Make-Whole Amount shall be
used.

     "Statistical Release" means the statistical release designated "H.15 (519)"
or any successor publication which is published weekly by the Federal Reserve
System and which establishes yields on actively traded United States government
securities adjusted to constant maturities, or, if such statistical release is
not published at the time of any determination under the Indenture, then such
other reasonably comparable index which shall be designated by the Company.

     If an Event of Default with respect to Securities of this series shall
occur and be continuing, the principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture.

     The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
effected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of a majority in principal amount of the Securities at
the time Outstanding of each series to be affected by such amendment or
modification. The Indenture also contains provisions permitting the Holders of
specified percentages in principal amount of the Securities of each series at
the time Outstanding, on behalf of the Holders of all Securities of such series,
to waive compliance by the Company with certain provisions of the Indenture and
certain past 

                                      -4-
<PAGE>
 
defaults under the Indenture and their consequences. Any such consent or waiver
by the Holder of this Security shall be conclusive and binding upon such Holder
and upon all future Holders of this Security and of any Security issued upon the
registration of transfer hereof or in exchange hereof or in lieu hereof, whether
or not notation of such consent or waiver is made upon this Security.

     As provided in and subject to the provisions of the Indenture, the Holder
of this Security shall not have the right to institute any proceeding with
respect to the Indenture or for the appointment of a receiver or trustee or for
any other remedy thereunder, unless (i) such Holder shall have previously given
the Trustee written notice of a continuing Event of Default with respect to the
Securities of this series, (ii) the Holders of not less than 25% in aggregate
principal amount of the Securities of this series at the time Outstanding shall
have made written request to the Trustee to institute proceedings in respect of
such Event of Default as Trustee and offered the Trustee reasonable indemnity,
(iii) the Trustee shall not have received from the Holders of a majority in
aggregate principal amount of Securities of this series at the time Outstanding
a direction inconsistent with such request, and (iv) the Trustee shall have
failed to institute any such proceeding, for 60 days after receipt of such
notice, request and offer of indemnity. The foregoing shall not apply to any
suit instituted by the Holder of this Security for the enforcement of any
payment of principal hereof or any premium or interest hereon on or after the
respective due dates expressed herein.

     No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of and any premium and interest
on this Security at the times, place and rate, and in the coin or currency,
herein prescribed.

     As provided in the Indenture and subject to certain limitations therein set
forth, the transfer of this Security is registrable in the Security Register,
upon surrender of this Security for registration of transfer at the office or
agency of the Company in any place where the principal of and any premium and
interest on this Security are payable, duly endorsed by, or accompanied by a
written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or his attorney duly
authorized in writing, and thereupon one or more new Securities of this series
and of like tenor, of authorized denominations and for the same aggregate
principal amount, will be issued to the designated transferee or transferees.

     The Securities of this series are issuable only in registered form without
coupons in denominations of $1,000 and any integral multiple thereof.  As
provided in the Indenture and subject to certain limitations therein set forth,
Securities of this series are exchangeable for a like aggregate principal amount
of Securities of this series and of like tenor of a different authorized
denomination, as requested by the Holder surrendering the same.

     No service charge shall be made for any such registration of transfer or
exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

                                      -5-
<PAGE>
 
     Prior to due presentment of this 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 this Security is registered as the owner hereof for all
purposes, whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

     All terms used in this Security which are defined in the Indenture shall
have the meanings assigned to them in the Indenture.

     Unless the certificate of authentication hereon has been executed by the
Trustee by manual signature, this Security shall not be entitled to any benefit
under the Indenture or be valid or obligatory for any purpose.

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


 
                            STATE STREET BANK AND TRUST COMPANY


                            By: ___________________________________
                                Authorized Officer

                                      -6-

<PAGE>
 
                                                                      EXHIBIT 2


================================================================================



                               WEEKS REALTY, L.P.


                                       TO


                      STATE STREET BANK AND TRUST COMPANY,

                                    TRUSTEE



                                   INDENTURE


                           Dated as of March   , 1998



===============================================================================
<PAGE>
 
          INDENTURE, dated as of March   , 1998, between WEEKS REALTY, L.P., a
limited partnership duly organized and existing under the laws of the State of
Georgia (herein called the "Company"), having its principal office at 4497 Park
Drive, Norcross, Georgia, and STATE STREET BANK AND TRUST COMPANY, a
Massachusetts trust company, 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;

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

          (4) unless the context otherwise requires, any reference to an
"Article" or a "Section" refers to an Article or a Section, as the case may be,
of this Indenture; and

          (5) 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.
<PAGE>
 
          "Act", when used with respect to any Holder, has the meaning specified
in Section 104.

          "Adjusted Total Assets" has the meaning specified in Section 1009(1).

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

          "Annual Service Charge" as of any date means the amount which is
expensed in any 12-month period for interest on Indebtedness of the Company and
its Subsidiaries.

          "Authenticating Agent" means any Person authorized by the Trustee
pursuant to Section 614 to act on behalf of the Trustee to authenticate
Securities of one or more series.

          "Board of Directors" means either the board of directors of the
General Partner, the executive committee thereof or any other 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 General Partner 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, means
each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
or executive order to close.

          "Commission" means the Securities and Exchange Commission, 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.

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

          "Company Request" or "Company Order" means a written request or order
signed by the General Partner, on behalf of the Company, by its Chairman of the
Board, its Vice Chairman of the Board, its President, its Chief Financial
Officer or a Vice President, and by its Treasurer, an Assistant Treasurer, its
Secretary or an Assistant Secretary, and delivered to the Trustee.

          "Consolidated Income Available for Debt Service" for any period means
Consolidated Net Income (i) plus amounts which have been deducted for (a)
interest on Indebtedness of the Company and its Subsidiaries, (b) provision for
taxes of the Company and its Subsidiaries based on income, (c) amortization of
Indebtedness discount, (d) losses and provisions for losses on properties, (e)
depreciation and amortization, (f) the effect of any noncash charge resulting

                                      -2-
<PAGE>
 
from a change in accounting principles in determining Consolidated Net Income
for such period, (g) amortization of deferred charges and (h) the effect of net
losses of joint ventures in which the Company or any Subsidiary owns an interest
to the extent not requiring a use of cash, and (ii) less amounts which have been
included for (a) gains from sales or dispositions of properties and (b) the
effect of net income of joint ventures in which the Operating Partnership or any
Subsidiary owns an interest to the extent not providing a source of Cash.

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

          "Control" means the ability, directly or indirectly, unilaterally to
cause a Person to take or refrain from taking any of the actions required,
prohibited or otherwise restricted by this Indenture, whether through ownership
of voting securities, contractually or otherwise.

          "Corporate Trust Office" means the principal office of the Trustee at
which at any particular time its corporate trust business shall be administered,
which office at the date hereof is located at Two International Place, Fourth
Floor, Boston, Massachusetts 02110, Attention: Corporate Trust Division.

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

          "Covenant Defeasance" has the meaning specified in Section 1303.

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

          "Defeasance" has the meaning specified in Section 1302.

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

          "Event of Default" has the meaning specified in Section 501.

          "Exchange Act" means the Securities Exchange Act of 1934 and any
statute successor thereto, in each case as amended from time to time.

          "Expiration Date" has the meaning specified in Section 104.


          "Financial Statements" has the meaning specified in Section 1010.

          "General Partner" means Weeks GP Holdings, Inc., a Georgia
corporation, as general partner of the Company, or any successor thereto.

          "Global Security" means a Security that evidences all or part of the
Securities of any series and bears the legend set forth in Section 204 (or such
legend as may be specified as contemplated by Section 301 for such Securities).

                                      -3-
<PAGE>
 
          "Holder" means a Person in whose name a Security is registered in the
Security Register.

          "Indebtedness" of the Company or any Subsidiary means any indebtedness
of the Company or such Subsidiary, as applicable, whether or not contingent, in
respect of (i) borrowed money evidenced by bonds, notes, debentures or similar
instruments, (ii) indebtedness secured by a mortgage, pledge, lien, charge,
encumbrance of any security interest existing on property owned by the Company
or such Subsidiary, (iii) the reimbursement obligations, contingent or
otherwise, in connection with any letters of credit actually issued or amounts
representing the balance that constitutes an accrued expense or trade payable or
(iv) any lease of property by the Company or such Subsidiary as lessee which is
reflected in the Company's consolidated balance sheet as a capitalized lease in
accordance with generally accepted accounting principles, in the case of items
of indebtedness under (i) through (iii) above to the extent that any such items
(other than letters of credit) would appear as a liability on the Company's
consolidated balance sheet in accordance with generally accepted accounting
principles, and also includes, to the extent not otherwise included, any
obligation by the Company or such Subsidiary to be liable for, or to pay, as
obligor, guarantor or otherwise (other than for purposes of collection in the
ordinary course of business), indebtedness of another person (other than the
Company or any Subsidiary).

          "Indenture" means this instrument as originally executed and 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,
including, for all purposes of this instrument and any such supplemental
indenture, the provisions of the Trust Indenture Act that are deemed to be a
part of and govern this instrument and any such supplemental indenture,
respectively.  The term "Indenture" shall also include the terms of particular
series of Securities established as contemplated by Section 301.

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

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

          "Investment Company Act" means the Investment Company Act of 1940 and
any statute successor thereto, in each case as amended from time to time.

          "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, call for redemption or otherwise.

          "NASD" has the meaning specified in Section 1403.

          "Notice of Default" means a written notice of the kind specified in
Section 501(4) or 501(5).

          "Officers' Certificate" means a certificate signed by the Chairman of
the Board, a Vice Chairman of the Board, the President, the Chief Financial
Officer or a Vice President, and by the Treasurer, an Assistant Treasurer, the
Secretary or an Assistant Secretary, of the General Partner, and delivered to
the Trustee. One of the officers signing an Officers' Certificate given pursuant
to Section 1004 shall be the principal executive, financial or accounting
officer of the Company.

                                      -4-
<PAGE>
 
          "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for the Company or the General Partner, and who shall be acceptable to
the Trustee.

          "Original Issue Discount Security" means any Security which provides
for an amount less than the principal amount thereof to be due and payable upon
a declaration of acceleration of the Maturity thereof pursuant to Section 502.

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

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

          (2) Securities for whose payment or redemption money in the necessary
     amount has been theretofore deposited with the Trustee or any Paying Agent
     (other than the Company) in trust or set aside and segregated in trust by
     the Company (if the Company shall act as its own Paying Agent) for the
     Holders of such Securities; 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;

          (3) Securities as to which Defeasance has been effected pursuant to
     Section 1302; and

          (4) 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, made or taken
     any request, demand, authorization, direction, notice, consent, waiver or
     other action hereunder as of any date, (A) the principal amount of an
     Original Issue Discount Security which shall be deemed to be Outstanding
     shall be the amount of the principal thereof which would be due and payable
     as of such date upon acceleration of the Maturity thereof to such date
     pursuant to Section 502, (B) if, as of such date, the principal amount
     payable at the Stated Maturity of a Security is not determinable, the
     principal amount of such Security which shall be deemed to be Outstanding
     shall be the amount as specified or determined as contemplated by Section
     301, (C) the principal amount of a Security denominated in one or more
     foreign currencies or currency units which shall be deemed to be
     Outstanding shall be the U.S. dollar equivalent, determined as of such date
     in the manner provided as contemplated by Section 301, of the principal
     amount of such Security (or, in the case of a Security described in Clause
     (A) or (B) above, of the amount determined as provided in such Clause), and
     (D) 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 relying upon any such
     request, demand, authorization, direction, notice, consent, waiver or other
     action, only Securities which the Trustee knows to be so owned shall be so
     disregarded. Securities so owned which have been pledged in good faith may
     be regarded as Outstanding if the pledgee establishes to the satisfaction
     of the Trustee the pledgee's right so to act with respect to such

                                      -5-
<PAGE>
 
     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 any premium or interest on any Securities on behalf of the
Company.

          "Person" means any individual, corporation, partnership, joint
venture, trust, unincorporated organization or government or any agency or
political subdivision thereof.

          "Place of Payment", when used with respect to the Securities of any
series, means the place or places where the principal of and any premium and
interest on the Securities of that series are payable as specified as
contemplated by Section 301.

          "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 shall be deemed to evidence the
same debt as the mutilated, destroyed, lost or stolen Security.

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

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

          "Regular Record Date" for the interest payable on any Interest Payment
Date on the Securities of any series means the date specified for that purpose
as contemplated by Section 301.

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

          "Required Filing Dates" has the meaning specified in Section 1010.

          "Responsible Officer", when used with respect to the Trustee, means
the chairman or any vice-chairman of the board of directors, the chairman or any
vice-chairman of the executive committee of the board of directors, the chairman
of the trust committee, the president, any vice president, the secretary, any
assistant secretary, the treasurer, any assistant treasurer, the cashier, any
assistant cashier, any trust officer or assistant trust officer, the controller
or any assistant controller or any other officer of the Trustee customarily
performing functions similar to those performed by any of the above designated
officers and also means, with respect to a particular corporate trust matter,
any other officer to whom such matter is referred because of his knowledge of
and familiarity with the particular subject.

          "Secured Indebtedness" means Indebtedness secured by any mortgage,
lien, charge, encumbrance, trust, deed, deed of trust, deed to secure debt,
security agreement, pledge, conditional sale or other title retention agreement,
capitalized lease, or other like agreement granting or conveying security title
to or a security interest in real property or other tangible assets.

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

                                      -6-
<PAGE>
 
          "Securities Act" means the Securities Act of 1933 and any statute
successor thereto, in each case as amended from time to time.

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

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

          "Special Record Date" for the payment of any Defaulted Interest means
a date fixed by the Trustee pursuant to Section 307.

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

          "Subsidiary" means Weeks Realty Services, Weeks Construction Services
and any other corporation, partnership or limited liability company more than
50% of the outstanding voting stock, partnership interests or membership
interests, as the case may be, of which is owned or controlled, directly or
indirectly, by the 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 which ordinarily has voting power for the election of
directors, whether at all times or only so long as no senior class of stock has
such voting power by reason of any contingency.

          "Total Assets" as of any date means the sum of (i) Undepreciated Real
Estate Assets and (ii) all other assets of the Company and its Subsidiaries on a
consolidated basis determined in accordance with generally accepted accounting
principles (but excluding intangibles and straight-line rents receivable).

          "Total Unencumbered Assets" means the sum of (i) those Undepreciated
Real Estate Assets which have not been pledged, mortgaged or otherwise
encumbered by the owner thereof to secure Indebtedness, excluding infrastructure
assessment bonds, if any, and (ii) all other assets of the Company and its
Subsidiaries determined in accordance with generally accepted accounting
principles (but excluding intangibles and straight-line rents receivable) which
have not been pledged, mortgaged or otherwise encumbered by the owner thereof to
secure Indebtedness.

          "Trust Indenture Act" means the Trust Indenture Act of 1939 as in
force at the date as of which this instrument was executed; PROVIDED, HOWEVER,
that in the event the Trust Indenture Act of 1939 is amended after such date,
"Trust Indenture Act" means, to the extent required by any such amendment, the
Trust Indenture Act of 1939 as so amended.

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

                                      -7-
<PAGE>
 
          "U.S. Government Obligation" has the meaning specified in Section
1304.

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

          "Unsecured Indebtedness" means Indebtedness which is (i) not
subordinated to any other Indebtedness and (ii) not secured by any mortgage,
lien, charge, pledge, encumbrance or security interest of any kind upon any of
the properties of the Company or any Subsidiary.


          "Vice President", when used with respect to the Company, the General
Partner or the Trustee, 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.

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 such certificates and opinions as may be required under the Trust
Indenture Act.  Each such certificate or opinion shall be given in the form of
an Officers' Certificate, if to be given by an officer of the Company, or an
Opinion of Counsel, if to be given by counsel, and shall comply with the
requirements of the Trust Indenture Act and any other requirements set forth in
this Indenture.

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

          (1) a statement that each individual signing such certificate or
opinion has read such covenant or condition and the definitions herein relating
thereto;

          (2) a brief statement as to the nature and scope of the examination or
investigation upon which the statements or opinions contained in such
certificate or opinion are based;

          (3) a statement that, in the opinion of each such individual, he has
made such examination or investigation as is necessary to enable him to express
an informed opinion as to whether or not such 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

                                      -8-
<PAGE>
 
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 or the General
Partner may be based, insofar as it relates to legal matters, upon a certificate
or opinion of, or representations by, counsel, unless such officer knows, or in
the exercise of reasonable care should know, that the certificate or opinion or
representations with respect to the matters upon which his certificate or
opinion is based are erroneous. Any such certificate or opinion of counsel may
be based, insofar as it relates to factual matters, upon a certificate or
opinion of, or representations by, an officer or officers of the Company or the
General Partner stating that the information with respect to such factual
matters is in the possession of the Company or the General Partner, 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.

          Any request, demand, authorization, direction, notice, consent, waiver
or other action provided or permitted by this Indenture to be given, made or
taken by Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agent duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required, to the Company.  Such
instrument or instruments (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Holders signing
such instrument or instruments.  Proof of execution of any such instrument or of
a writing appointing any such agent shall be sufficient for any purpose of this
Indenture and (subject to Section 601) conclusive in favor of the Trustee and
the Company, if made in the manner provided in this Section.

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

          The ownership of Securities shall be proved by the Security Register.

          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 or the Company in

                                      -9-
<PAGE>
 
reliance thereon, whether or not notation of such action is made upon such
Security.

          The Company may set any day as a record date for the purpose of
determining the Holders of Outstanding Securities of any series entitled to
give, make or take any request, demand, authorization, direction, notice,
consent, waiver or other action provided or permitted by this Indenture to be
given, made or taken by Holders of Securities of such series; PROVIDED that the
Company may not set a record date for, and the provisions of this paragraph
shall not apply with respect to, the giving or making of any notice,
declaration, request or direction referred to in the next paragraph.  If any
record date is set pursuant to this paragraph, the Holders of Outstanding
Securities of the relevant series on such record date, and no other Holders,
shall be entitled to take the relevant action, whether or not such Holders
remain Holders after such record date; PROVIDED that no such action shall be
effective hereunder unless taken on or prior to the applicable Expiration Date
by Holders of the requisite principal amount of Outstanding Securities of such
series on such record date. Nothing in this paragraph shall be construed to
prevent the Company from setting a new record date for any action for which a
record date has previously been set pursuant to this paragraph (whereupon the
record date previously set shall automatically and with no action by any Person
be cancelled and of no effect), and nothing in this paragraph shall be construed
to render ineffective any action taken by Holders of the requisite principal
amount of Outstanding Securities of the relevant series on the date such action
is taken. Promptly after any record date is set pursuant to this paragraph, the
Company, at its own expense, shall cause notice of such record date, the
proposed action by Holders and the applicable Expiration Date to be given to the
Trustee in writing and to each Holder of Securities of the relevant series in
the manner set forth in Section 106.

          The Trustee may set any day as a record date for the purpose of
determining the Holders of Outstanding Securities of any series entitled to join
in the giving or making of (i) any Notice of Default, (ii) any declaration of
acceleration referred to in Section 502, (iii) any request to institute
proceedings referred to in Section 507(2) or (iv) any direction referred to in
Section 512, in each case with respect to Securities of such series.  If any
record date is set pursuant to this paragraph, the Holders of Outstanding
Securities of such series on such record date, and no other Holders, shall be
entitled to join in such notice, declaration, request or direction, whether or
not such Holders remain Holders after such record date; PROVIDED that no such
action shall be effective hereunder unless taken on or prior to the applicable
Expiration Date by Holders of the requisite principal amount of Outstanding
Securities of such series on such record date.  Nothing in this paragraph shall
be construed to prevent the Trustee from setting a new record date for any
action for which a record date has previously been set pursuant to this
paragraph (whereupon the record date previously set shall automatically and with
no action by any Person be cancelled and of no effect), and nothing in this
paragraph shall be construed to render ineffective any action taken by Holders
of the requisite principal amount of Outstanding Securities of the relevant
series on the date such action is taken. Promptly after any record date is set
pursuant to this paragraph, the Trustee, at the Company's expense, shall cause
notice of such record date, the proposed action by Holders and the applicable
Expiration Date to be given to the Company in writing and to each Holder of
Securities of the relevant series in the manner set forth in Section 106.

          With respect to any record date set pursuant to this Section, the
party hereto which sets such record date may designate any day as the
"Expiration Date" and from time to time may change the Expiration Date to any
earlier or later day; PROVIDED that no such change shall be effective unless
notice of the proposed new Expiration Date is given to the other party hereto in
writing, and to each Holder of Securities of the relevant series in the manner
set forth in Section 106, on or prior to the existing Expiration Date. If an

                                      -10-
<PAGE>
 
Expiration Date is not designated with respect to any record date set pursuant
to this Section, the party hereto which set such record date shall be deemed to
have initially designated the 180th day after such record date as the Expiration
Date with respect thereto, subject to its right to change the Expiration Date as
provided in this paragraph. Notwithstanding the foregoing, no Expiration Date
shall be later than the 180th day after the applicable record date.

          Without limiting the foregoing, a Holder entitled hereunder to take
any action hereunder with regard to any particular Security may do so with
regard to all or any part of the principal amount of such Security or by one or
more duly appointed agents each of which may do so pursuant to such appointment
with regard to all or any part of such principal amount.

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 if made, given, furnished or filed in writing to or
with the Trustee at its Corporate Trust Office, or

          (2) the Company by the Trustee or by any Holder shall be sufficient
for every purpose hereunder (unless otherwise herein expressly provided) if in
writing and mailed, first-class postage prepaid, to the Company addressed to it
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 to Holders of any event, such
notice shall be sufficiently given (unless otherwise herein expressly provided)
if in writing and mailed, first-class postage prepaid, to each Holder affected
by such event, at his address as it appears in the Security Register, not later
than the latest date (if any), and not earlier than the earliest date (if any),
prescribed for the giving of such notice. In any case where notice to Holders 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. 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.

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

SECTION 107.  CONFLICT WITH TRUST INDENTURE ACT.

          If any provision hereof limits, qualifies or conflicts with a
provision of the Trust Indenture Act which is required under such Act to be a
part of and govern this Indenture, the latter provision shall control. If any

                                      -11-
<PAGE>
 
provision of this Indenture modifies or excludes any provision of the Trust
Indenture Act which may be so modified or excluded, the latter provision shall
be deemed to apply to this Indenture as so modified or to be excluded, as the
case may be.

SECTION 108.  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 109.  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 110.  SEPARABILITY CLAUSE.

          In case any provision in this Indenture or in the Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions of such instrument or instruments shall not in any way
be affected or impaired thereby.

SECTION 111.  BENEFITS OF INDENTURE.

          Nothing in this Indenture or in the Securities, express or implied,
shall give to any Person, other than the parties hereto and their successors
hereunder and the Holders, any benefit or any legal or equitable right, remedy
or claim under this Indenture.

SECTION 112.  GOVERNING LAW.

          This Indenture and the Securities shall be governed by and construed
in accordance with the laws of the State of New York.

SECTION 113.  LEGAL HOLIDAYS.

          In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security shall not be a Business Day at any Place of Payment,
then (notwithstanding any other provision of this Indenture or of the Securities
(other than a provision of any Security which specifically states that such
provision shall apply in lieu of this Section)) payment of interest or principal
(and premium, if any) need not be made at such Place of Payment on such date,
but may be made on the next succeeding Business Day at such Place of Payment
with the same force and effect as if made on the Interest Payment Date or
Redemption Date, or at the Stated Maturity.

SECTION 114.   INDEBTEDNESS OF SUBSIDIARIES

          The Company hereby represents and warrants that (i) as of the date of
this Indenture, no Subsidiary has any outstanding unsecured Indebtedness, except
for a $2.0 million unsecured obligation of Weeks Tradeport Limited Partnership,
a Georgia limited partnership indirectly wholly owned by Weeks Realty Services,
Inc., and (ii) each of the Subsidiaries has agreed not to incur any additional
unsecured Indebtedness other than (A) intercompany debt representing
Indebtedness to which the only parties are the Company and any of its
Subsidiaries that is subordinate in right of payment to any Outstanding
Securities, and (B) trade payables incurred in the ordinary course of such
Subsidiaries' business.

                                      -12-
<PAGE>
 
                                  ARTICLE TWO
                                SECURITY FORMS

SECTION 201.  FORMS GENERALLY.

          The Securities of each series shall be in substantially the form set
forth in this Article, or in such other form as shall be established by or
pursuant to a Board Resolution or in one or more indentures supplemental hereto,
in each case with such appropriate insertions, omissions, substitutions and
other variations as are required or permitted by this Indenture, and may have
such letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or Depositary therefor or as may, consistently herewith, be
determined by the officers executing such Securities, as evidenced by their
execution thereof.  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.

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

SECTION 202.  FORM OF FACE OF SECURITY.

          {INSERT ANY LEGEND REQUIRED BY THE INTERNAL REVENUE CODE AND THE
          REGULATIONS THEREUNDER.}

          NO.___________________________      $________

          Weeks Realty, L.P., a limited partnership duly organized and existing
under the laws of Georgia (herein called the "Company", which term includes any
successor Person under the Indenture hereinafter referred to), for value
received, hereby promises to pay to __________, or registered assigns, the
principal sum of ___________________ Dollars on ____________ {IF THE SECURITY IS
TO BEAR INTEREST PRIOR TO MATURITY, INSERT --, and to pay interest thereon from
____________ or from the most recent Interest Payment Date to which interest has
been paid or duly provided for, semi-annually on ___________ and __________ in
each year, commencing ____________, at the rate of ___% per annum, until the
principal hereof is paid or made available for payment {IF APPLICABLE, INSERT 
- --; PROVIDED that any principal and premium, and any such installment of
interest, which is overdue shall bear interest at the rate of ___ % per annum
(to the extent that the payment of such interest shall be legally enforceable),
from the dates such amounts are due until they are paid or made available for
payment, and such interest shall be payable on demand}. The interest so payable,
and punctually paid or duly provided for, on any Interest Payment Date will, as
provided in such Indenture, be paid to the Person in whose name this Security
(or one or more Predecessor Securities) is registered at the close of business
on the Regular Record Date for such interest, which shall be the _________ or
___________ (whether or not a Business Day), as the case may be, next preceding
such Interest Payment Date. Any such interest not so punctually paid or duly
provided for will forthwith cease to be payable to the Holder on such Regular
Record Date and may either be paid to the Person in whose name this Security (or
one or more Predecessor Securities) is registered at the close of business on a
Special Record Date for the payment of such Defaulted Interest to be fixed by
the Trustee, notice whereof shall be given to Holders of Securities of this

                                      -13-
<PAGE>
 
series not less than 10 days prior to such Special Record Date, or be paid at
any time in any other lawful manner not inconsistent with the requirements of
any securities exchange on which the Securities of this series may be listed,
and upon such notice as may be required by such exchange, all as more fully
provided in said Indenture}.

          {IF THE SECURITY IS NOT TO BEAR INTEREST PRIOR TO MATURITY, INSERT --
The principal of this Security shall not bear interest except in the case of a
default in payment of principal upon acceleration, upon redemption or at Stated
Maturity and in such case the overdue principal and any overdue premium shall
bear interest at the rate of ___% per annum (to the extent that the payment of
such interest shall be legally enforceable), from the dates such amounts are due
until they are paid or made available for payment.  Interest on any overdue
principal or premium shall be payable on demand.  {Any such interest on overdue
principal or premium which is not paid on demand shall bear interest at the rate
of ____% per annum (to the extent that the payment of such interest on interest
shall be legally enforceable), from the date of such demand until the amount so
demanded is paid or made available for payment. Interest on any overdue interest
shall be payable on demand.

          Payment of the principal of (and premium, if any) and {IF APPLICABLE,
INSERT -- any such} interest on this Security will be made at the office or
agency of the Company maintained for that purpose in __________ , in such coin
or currency of the United States of America as at the time of payment is legal
tender for payment of public and private debts {IF APPLICABLE, INSERT --;
PROVIDED, HOWEVER, that at the option of the Company payment of interest may be
made by check mailed to the address of the Person entitled thereto as such
address shall appear in the Security Register}.

          Reference is hereby made to the further provisions of this Security
set forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

                                      -14-
<PAGE>
 
          Unless the certificate of authentication hereon has been executed by
the Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

          IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

Dated:
      ---------------------------
                                    WEEKS REALTY, L.P.

                                    By:  Weeks GP Holdings, Inc.,
                                         its general partner


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

Attest:
       --------------------------

                                      -15-
<PAGE>
 
SECTION 203.  FORM OF REVERSE OF SECURITY.

          This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued and to be issued in one or more
series under an Indenture, dated as of ____________, 1997 (herein called the
"Indenture", which term shall have the meaning assigned to it in such
instrument), between the Company and ____________________, as Trustee (herein
called the "Trustee", which term includes any successor trustee under the
Indenture), and reference is hereby made to the Indenture for a statement of the
respective rights, limitations of rights, duties and immunities thereunder of
the Company, the Trustee and the Holders of the Securities and of the terms upon
which the Securities are, and are to be, authenticated and delivered. This
Security is one of the series designated on the face hereof {IF APPLICABLE,
INSERT --, limited in aggregate principal amount to $______________}.

          {IF APPLICABLE, INSERT -- The Securities of this series are subject to
redemption upon not less than 30 days' notice by mail, {IF APPLICABLE, INSERT --
(1) on ___________ in any year commencing with the year _______ and ending with
the year ________ through operation of the sinking fund for this series at a
Redemption Price equal to 100% of the principal amount, and (2)} at any time {IF
APPLICABLE, INSERT -- on or after ____________, 19__}, as a whole or in part, at
the election of the Company, at the following Redemption Prices (expressed as
percentages of the principal amount): If redeemed {IF APPLICABLE, INSERT -- on
or before _________, ___%, and if redeemed} during the 12-month period beginning
______ of the years indicated,

Year        Redemption Price              Year          Redemption Price
- ----        ----------------              ----          ----------------
 
 

and thereafter at a Redemption Price equal to ____% of the principal amount,
together in the case of any such redemption {IF APPLICABLE, INSERT -- (whether
through operation of the sinking fund or otherwise)} with accrued interest to
the Redemption Date, but interest installments whose Stated Maturity is on or
prior to such Redemption Date will be payable to the Holders of such Securities,
or one or more Predecessor Securities, of record at the close of business on the
relevant Record Dates referred to on the face hereof, all as provided in the
Indenture.

          {IF APPLICABLE, INSERT -- The Securities of this series are subject to
redemption upon not less than 30 days' notice by mail, (1) on ___________ in any
year commencing with the year ____________ and ending with the year _________
through operation of the sinking fund for this series at the Redemption Prices
for redemption through operation of the sinking fund (expressed as percentages
of the principal amount) set forth in the table below, and (2) at any time {IF
APPLICABLE, INSERT -- on or after ___________}, as a whole or in part, at the
election of the Company, at the Redemption Prices for redemption otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below: If redeemed during the 12-month period
beginning ____________ of the years indicated,

                                      -16-
<PAGE>
 
                           REDEMPTION PRICE              REDEMPTION PRICE FOR
                            FOR REDEMPTION               REDEMPTION OTHERWISE
                           THROUGH OPERATION            THAN THROUGH OPERATION
YEAR                      OF THE SINKING FUND            OF THE SINKING FUND
- -----                     -------------------           ----------------------
 


 

and thereafter at a Redemption Price equal to _________ % of the principal
amount, together in the case of any such redemption (whether through operation
of the sinking fund or otherwise) with accrued interest to the Redemption Date,
but interest installments whose Stated Maturity is on or prior to such
Redemption Date will be payable to the Holders of such Securities, or one or
more Predecessor Securities, of record at the close of business on the relevant
Record Dates referred to on the face hereof, all as provided in the Indenture.

          {IF APPLICABLE, INSERT -- Notwithstanding the foregoing, the Company
may not, prior to ___________ , redeem any Securities of this series as
contemplated by {IF APPLICABLE, INSERT -- Clause (2) of} the preceding paragraph
as a part of, or in anticipation of, any refunding operation by the application,
directly or indirectly, of moneys borrowed having an interest cost to the
Company (calculated in accordance with generally accepted financial practice) of
less than _____% per annum.}

          {IF APPLICABLE, INSERT -- The sinking fund for this series provides
for the redemption on ___________ in each year beginning with the year ________
and ending with the year ________ of {IF APPLICABLE, INSERT -- not less than
$___________ ("mandatory sinking fund") and not more than} $___________
aggregate principal amount of Securities of this series.  Securities of this
series acquired or redeemed by the Company otherwise than through {IF
APPLICABLE, INSERT -- mandatory} sinking fund payments may be credited against
subsequent {IF APPLICABLE, INSERT -- mandatory} sinking fund payments otherwise
required to be made {IF APPLICABLE, INSERT -- , in the inverse order in which
they become due}.}

          {IF THE SECURITY IS SUBJECT TO REDEMPTION OF ANY KIND, INSERT -- In
the event of redemption of this Security in part only, a new Security or
Securities of this series and of like tenor for the unredeemed portion hereof
will be issued in the name of the Holder hereof upon the cancellation hereof.}

          {IF APPLICABLE, INSERT PARAGRAPH REGARDING SUBORDINATION OF THE
SECURITY.}

          {IF APPLICABLE, INSERT -- The Indenture contains provisions for
defeasance at any time of {the entire indebtedness of this Security} {or}
{certain restrictive covenants and Events of Default with respect to this
Security} {, in each case} upon compliance with certain conditions set forth in
the Indenture.}

          {IF THE SECURITY IS NOT AN ORIGINAL ISSUE DISCOUNT SECURITY, INSERT --
If an Event of Default with respect to Securities of this series shall occur and

                                      -17-
<PAGE>
 
be continuing, the principal of the Securities of this series may be declared
due and payable in the manner and with the effect provided in the Indenture.}

          {IF THE SECURITY IS AN ORIGINAL ISSUE DISCOUNT SECURITY, INSERT -- If
an Event of Default with respect to Securities of this series shall occur and be
continuing, an amount of principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture. Such amount shall be equal to -- INSERT FORMULA FOR DETERMINING THE
AMOUNT. Upon payment (i) of the amount of principal so declared due and payable
and (ii) of interest on any overdue principal, premium and interest (in each
case to the extent that the payment of such interest shall be legally
enforceable), all of the Company's obligations in respect of the payment of the
principal of and premium and interest, if any, on the Securities of this series
shall terminate.}

          The Indenture permits, with certain exceptions as therein provided,
the amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
effected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of a majority in principal amount of the Securities at
the time Outstanding of each series to be affected by such amendment or
modification. The Indenture also contains provisions permitting the Holders of
specified percentages in principal amount of the Securities of each series at
the time Outstanding, on behalf of the Holders of all Securities of such series,
to waive compliance by the Company with certain provisions of the Indenture and
certain past defaults under the Indenture and their consequences. Any such
consent or waiver by the Holder of this Security shall be conclusive and binding
upon such Holder and upon all future Holders of this Security and of any
Security issued upon the registration of transfer thereof or in exchange
therefor or in lieu thereof, whether or not notation of such consent or waiver
is made upon this Security.

          As provided in and subject to the provisions of the Indenture, the
Holder of this Security shall not have the right to institute any proceeding
with respect to the Indenture or for the appointment of a receiver or trustee or
for any other remedy thereunder, unless (i) such Holder shall have previously
given the Trustee written notice of a continuing Event of Default with respect
to the Securities of this series, (ii) the Holders of not less than 25% in
principal amount of the Securities of this series at the time Outstanding shall
have made written request to the Trustee to institute proceedings in respect of
such Event of Default as Trustee and offered the Trustee reasonable indemnity,
(iii) the Trustee shall not have received from the Holders of a majority in
principal amount of Securities of this series at the time Outstanding a
direction inconsistent with such request, and (iv) the Trustee shall have failed
to institute any such proceeding, for 60 days after receipt of such notice,
request and offer of indemnity. The foregoing shall not apply to any suit
instituted by the Holder of this Security for the enforcement of any payment of
principal hereof or any premium or interest hereon on or after the respective
due dates expressed herein.

          No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal of and any premium and

                                      -18-
<PAGE>
 
interest on this Security at the times, place and rate, and in the coin or
currency, herein prescribed.

          As provided in the Indenture and subject to certain limitations
therein set forth, the transfer of this Security is registrable in the Security
Register, upon surrender of this Security for registration of transfer at the
office or agency of the Company in any place where the principal of and any
premium and interest on this Security are payable, duly endorsed by, or
accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder hereof or his
attorney duly authorized in writing, and thereupon one or more new Securities of
this series and of like tenor, of authorized denominations and for the same
aggregate principal amount, will be issued to the designated transferee or
transferees.

          The Securities of this series are issuable only in registered form
without coupons in denominations of $1,000.00 and any integral multiple thereof.
As provided in the Indenture and subject to certain limitations therein set
forth, Securities of this series are exchangeable for a like aggregate principal
amount of Securities of this series and of like tenor of a different authorized
denomination, as requested by the Holder surrendering the same.

          No service charge shall be made for any such registration of transfer
or exchange, but the Company may require payment of a sum sufficient to cover
any tax or other governmental charge payable in connection therewith.

          Prior to due presentment of this 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 this Security is registered as the owner
hereof for all purposes, whether or not this Security be overdue, and neither
the Company, the Trustee nor any such agent shall be affected by notice to the
contrary.

          All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

SECTION 204.  FORM OF LEGEND FOR GLOBAL SECURITIES.

          Unless otherwise specified as contemplated by Section 301 for the
Securities evidenced thereby, every Global Security authenticated and delivered
hereunder shall bear a legend in substantially the following form:

          THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE THEREOF. THIS SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A
SECURITY REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE

                                      -19-
<PAGE>
 
REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE
THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

SECTION 205.  FORM OF TRUSTEE'S CERTIFICATE
              OF AUTHENTICATION.

          The Trustee's certificates of authentication shall be in substantially
the following form:

                                      -20-
<PAGE>
 
          This is one of the Securities of the series designated therein
referred to in the within-mentioned Indenture.

                         STATE STREET BANK AND TRUST
                         COMPANY, AS TRUSTEE


                              By:_______________________________________________
                                     AUTHORIZED OFFICER

                                      -21-
<PAGE>
 
                                 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 or pursuant to a Board Resolution and, subject to Section 303,
set forth, or determined in the manner provided, in an Officers' Certificate, or
established in one or more indentures supplemental hereto, prior to the issuance
of Securities of any series,

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

          (2) any limit upon the aggregate principal amount of the Securities of
the series which 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 1405 and except for any Securities which,
pursuant to Section 303, are deemed never to have been authenticated and
delivered hereunder);

          (3) the Person to whom any interest on a 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;

          (4) the date or dates on which the principal of any Securities of the
series is payable;

          (5) the rate or rates at which any Securities of the series shall bear
interest, if any, the date or dates from which any such interest shall accrue,
the Interest Payment Dates on which any such interest shall be payable and the
Regular Record Date for any such interest payable on any Interest Payment Date;

          (6) the place or places where the principal of and any premium and
interest on any Securities of the series shall be payable;

          (7) the period or periods within which, the price or prices at which
and the terms and conditions upon which any Securities of the series may be
redeemed, in whole or in part, at the option of the Company and, if other than
by a Board Resolution, the manner in which any election by the Company to redeem
the Securities shall be evidenced;

          (8) the obligation, if any, of the Company to redeem, repay or
purchase any Securities of the series pursuant to any sinking fund or analogous

                                      -22-
<PAGE>
 
provisions or at the option of the Holder thereof upon the occurrence of
specified circumstances or otherwise, and the period or periods within which or
the date or dates on which, the price or prices at which and the other terms and
conditions upon which any Securities of the series shall be redeemed, repaid or
purchased, in whole or in part, pursuant to such obligation and any provisions
in modification of, in addition to or in lieu of any of the provisions of
Articles Eleven, Twelve or Fourteen;

          (9) if other than denominations of $1,000 and any integral multiple
thereof, the denominations in which any Securities of the series shall be
issuable;

          (10) if the amount of principal of or any premium or interest on any
Securities of the series may be determined with reference to an index or
pursuant to a formula, the manner in which such amounts shall be determined;

          (11) the percentage of the principal amount at which Securities of
such series will be issued and, if other than the entire principal amount
thereof, the portion of the principal amount of any Securities of the series
which shall be payable upon declaration of acceleration of the Maturity thereof
pursuant to Section 502;

          (12) if the principal amount payable at the Stated Maturity of any
Securities of the series will not be determinable as of any one or more dates
prior to the Stated Maturity, the amount which shall be deemed to be the
principal amount of such Securities as of any such date for any purpose
thereunder or hereunder, including the principal amount thereof which shall be
due and payable upon any Maturity other than the Stated Maturity or which shall
be deemed to be Outstanding as of any date prior to the Stated Maturity (or, in
any such case, the manner in which such amount deemed to be the principal amount
shall be determined);

          (13) if applicable, that the Securities of the series, in whole or any
specified part, shall be defeasible pursuant to Section 1302 or Section 1303 or
both such Sections and, if other than by a Board Resolution, the manner in which
any election by the Company to defease such Securities shall be evidenced;

          (14) if applicable, that any Securities of the series shall be
issuable in whole or in part in the form of one or more Global Securities and,
in such case, the respective Depositaries for such Global Securities, the form
of any legend or legends which shall be borne by any such Global Security in
addition to or in lieu of that set forth in Section 204 and any circumstances in
addition to or in lieu of those set forth in Clause (2) of the last paragraph of
Section 305 in which any such Global Security may be exchanged in whole or in
part for Securities registered, and any transfer of such Global Security in
whole or in part may be registered, in the name or names of Persons other than
the Depositary for such Global Security or a nominee thereof;

          (15) any addition to or change in the Events of Default which apply to
any Securities of the series and any change in the right of the Trustee or the

                                      -23-
<PAGE>
 
requisite Holders of such Securities to declare the principal amount thereof due
and payable pursuant to Section 502;

          (16) any addition to or change in the covenants set forth in Article
Ten which applies to Securities of the series; and

          (17) any other terms of the series (which terms shall not be
inconsistent with the provisions of this Indenture, except as permitted by
Section 901(5)).

          All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to the Board Resolution referred to above and (subject to Section 303) set
forth, or determined in the manner provided, in the Officers' Certificate
referred to above or in any such indenture supplemental hereto.

          If any of the terms of the series are established by action taken
pursuant to a Board Resolution, a copy of an appropriate record of such action
shall be certified by the Secretary or an Assistant Secretary of the Company and
delivered to the Trustee at or prior to the delivery of the Officers'
Certificate setting forth the terms of the series.

          All Securities of one series need not be issued at the same time and,
unless otherwise provided in the Board Resolution or the Officers' Certificate
establishing the terms of a series, any series may be reopened, without the
consent of the holders of Securities of such series, for issuance of additional
Securities of such series.

SECTION 302.  DENOMINATIONS.

          The Securities of each series shall be issuable only in registered
form without coupons and only in such denominations as shall be specified as
contemplated by Section 301.  In the absence of any such specified denomination
with respect to the Securities of any series, the Securities of such series
shall be issuable in denominations of $1,000 and any integral multiple thereof.

SECTION 303.  EXECUTION, AUTHENTICATION, DELIVERY
              AND DATING.

          The Securities shall be executed on behalf of the Company by the
General Partner's Chairman of the Board, its Vice Chairman of the Board, its
President, its Chief Financial Officer or one of its Vice Presidents, under the
General Partner's corporate seal reproduced thereon attested by its Secretary or
one of its Assistant Secretaries.

          The signature of any of these officers on the Securities may be manual
or facsimile.

                                      -24-
<PAGE>
 
          Securities 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.

          At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities of any series executed on
behalf of the Company to the Trustee for authentication, together with a Company
Order for the authentication and delivery of such Securities, and the Trustee in
accordance with the Company Order shall authenticate and deliver such
Securities. If the form or terms of the Securities of the series have been
established by or pursuant to one or more Board Resolutions or supplemental
indentures as permitted by Sections 201 and 301, 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 Section 601) shall be fully protected in relying upon, an Opinion of
Counsel stating,

          (1) if the form of such Securities has been established by or pursuant
to Board Resolution or supplemental indenture as permitted by Section 201, that
such form has been established in conformity with the provisions of this
Indenture;

          (2) if the terms of such Securities have been established by or
pursuant to Board Resolution or supplemental indenture as permitted by Section
301, that such terms have been established in conformity with the provisions of
this Indenture; and

          (3) that such Securities, when authenticated and delivered by the
Trustee and issued by the Company in the manner and subject to any conditions
specified in such Opinion of Counsel, will constitute valid and legally binding
obligations of the Company enforceable in accordance with their terms, subject
to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors' rights
and to general equity principles.

          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 or
immunities under the Securities and this Indenture or otherwise in a manner
which is not reasonably acceptable to the Trustee.

          Notwithstanding the provisions of Section 301 and of the preceding
paragraph, if all Securities of a series are not to be originally 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 such preceding paragraph at or prior to the
authentication of each Security of such series if such documents are delivered
at or prior to the authentication upon original issuance of the first Security
of such series to be issued.

          Each Security shall be dated the date of its authentication.

                                      -25-
<PAGE>
 
          No Security shall be entitled to any benefit under this Indenture or
be valid or obligatory for any purpose unless there appears on such Security a
certificate of authentication substantially in the form provided for herein
executed by the Trustee by manual signature, and such certificate upon any
Security shall be conclusive evidence, and the only evidence, that such Security
has been duly authenticated and delivered hereunder. 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 309, 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.

          Pending the preparation of definitive Securities of any series, the
Company may cause to be executed, 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 and with such appropriate insertions, omissions, substitutions and
other variations as the officers executing such Securities may determine, as
evidenced by their execution of such Securities.

          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, the Company shall execute and the
Trustee shall authenticate and deliver in exchange therefor one or more
definitive Securities of the same series, of any authorized denominations and of
like tenor and aggregate principal amount. 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 and tenor.

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 (the register maintained in such office 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 Securities and of transfers of Securities.  The Trustee is
hereby appointed "Security Registrar" for the purpose of registering Securities
and transfers of Securities as herein provided.

                                      -26-
<PAGE>
 
          Upon surrender for registration of transfer of any Security of a
series at the office or agency of the Company 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 or transferees, one or more
new Securities of the same series, of any authorized denominations and of like
tenor and aggregate principal amount.

          At the option of the Holder, Securities of any series may be exchanged
for other Securities of the same series, of any authorized denominations and of
like tenor and aggregate principal amount, upon surrender of the Securities to
be exchanged at such office or agency. 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.

          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 Security presented or surrendered for registration of transfer
or for exchange shall (if so required by the Company or the Trustee) 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 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 1405 not involving any transfer.

          If the Securities of any series (or of any series and specified tenor)
are to be redeemed in part, the Company shall not be required (A) to issue,
register the transfer of or exchange any Securities of that series (or of that
series and specified tenor, as the case may be) during a period beginning at the
opening of business 15 days before the day of the mailing of a notice of
redemption of any such Securities selected for redemption under Section 1103 and
ending at the close of business on the day of such mailing, or (B) to register
the transfer of or exchange any Security so selected for redemption in whole or
in part, except the unredeemed portion of any Security being redeemed in part.

          The provisions of Clauses (1), (2), (3) and (4) below shall apply only
to Global Securities:

          (1) Each Global Security authenticated under this Indenture shall be
registered in the name of the Depositary designated for such Global Security or

                                      -27-
<PAGE>
 
a nominee thereof and delivered to such Depositary or a nominee thereof or
custodian therefor, and each such Global Security shall constitute a single
Security for all purposes of this Indenture.

          (2) Notwithstanding any other provision in this Indenture, no Global
Security may be exchanged in whole or in part for Securities registered, and no
transfer of a Global Security in whole or in part may be registered, in the name
of any Person other than the Depositary for such Global Security or a nominee
thereof unless (A) such Depositary (i) has notified the Company that it is
unwilling or unable to continue as Depositary for such Global Security or (ii)
has ceased to be a clearing agency registered under the Exchange Act, (B) there
shall have occurred and be continuing an Event of Default with respect to such
Global Security or (C) there shall exist such circumstances, if any, in addition
to or in lieu of the foregoing as have been specified for this purpose as
contemplated by Section 301.

          (3) Subject to Clause (2) above, any exchange of a Global Security for
other Securities may be made in whole or in part, and all Securities issued in
exchange for a Global Security or any portion thereof shall be registered in
such names as the Depositary for such Global Security shall direct.

          (4) Every Security authenticated and delivered upon registration of
transfer of, or in exchange for or in lieu of, a Global Security or any portion
thereof, whether pursuant to this Section, Section 304, 306, 906, 1107 or 1405
or otherwise, shall be authenticated and delivered in the form of, and shall be,
a Global Security, unless such Security is registered in the name of a Person
other than the Depositary for such Global Security or a nominee thereof.

SECTION 306.  MUTILATED, DESTROYED, LOST AND
              STOLEN SECURITIES.

          If any mutilated Security 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.

          If there shall be delivered to the Company and the Trustee (i)
evidence to their satisfaction of the destruction, loss or theft of any Security
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 has been acquired by a bona fide
purchaser, the Company shall execute and the Trustee shall authenticate and
deliver, in lieu of any such destroyed, lost or stolen Security, a new Security
of the same series and of like tenor and principal amount and bearing a number
not contemporaneously outstanding.

          In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Security, pay such Security.

                                      -28-
<PAGE>
 
          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 issued pursuant to this Section in
lieu of any destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company, whether or not the destroyed,
lost or stolen Security 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 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.

SECTION 307.  PAYMENT OF INTEREST; INTEREST RIGHTS PRESERVED.

          Except as otherwise provided as contemplated by Section 301 with
respect to any series of Securities, interest on any Security which is payable,
and is punctually paid or duly provided for, on any Interest Payment Date shall
be paid to the Person in whose name that Security (or one or more Predecessor
Securities) is registered at the close of business on the Regular Record Date
for such interest.

          Any interest on any Security of any series which is payable, but is
not punctually paid or duly provided for, on any Interest Payment Date (herein
called "Defaulted Interest") shall forthwith cease to be payable to the Holder
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 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 Security of such series
and the date of the proposed payment, and at the same time the Company shall
deposit with the Trustee an amount of money 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

                                      -29-
<PAGE>
 
payment of such Defaulted Interest and the Special Record Date therefor to be
given to each Holder of Securities of such series in the manner set forth in
Section 106, 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 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).

          (2) The Company may make payment of any Defaulted Interest on the
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 practicable by the Trustee.

          Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest accrued
and unpaid, and to accrue, which were carried by such other Security.

SECTION 308.  PERSONS DEEMED OWNERS.

          Prior to due presentment of a 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 Security is registered as the owner of such
Security for the purpose of receiving payment of principal of and any premium
and (subject to Section 307) any interest on such Security and for all other
purposes whatsoever, whether or not such 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.

SECTION 309.  CANCELLATION.

          All Securities surrendered for payment, redemption, 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 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. 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. All cancelled
Securities held by the Trustee shall be disposed of in accordance with the
Trustee's procedures, subject to its record retention policy.

                                      -30-
<PAGE>
 
SECTION 310.  COMPUTATION OF INTEREST.

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

                                      -31-
<PAGE>
 
                                  ARTICLE FOUR
                           SATISFACTION AND DISCHARGE

SECTION 401.  SATISFACTION AND DISCHARGE OF INDENTURE.

          This Indenture shall upon Company Request cease to be of further
effect (except as to any surviving rights of registration of transfer or
exchange of Securities herein expressly provided for), and the Trustee, at the
expense of the Company, shall execute proper instruments acknowledging
satisfaction and discharge of this Indenture, when

          (1)  either

               (A) all Securities theretofore authenticated and delivered (other
          than (i) Securities which have been destroyed, lost or stolen and
          which have been replaced or paid as provided in Section 306 and (ii)
          Securities for whose payment money has theretofore been deposited in
          trust or segregated and held in trust by the Company and thereafter
          repaid to the Company or discharged from such trust, as provided in
          Section 1003) have been delivered to the Trustee for cancellation; or

               (B) all such Securities not theretofore delivered to the Trustee
          for cancellation

               (i)   have become due and payable, or

               (ii)  will become due and payable at their Stated Maturity within
                     one year, or

               (iii) are to be called for redemption within one year under
                     arrangements satisfactory to the Trustee for the giving of
                     notice 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
          deposited or caused to be deposited with the Trustee funds in trust
          for such purpose in an amount sufficient to pay and discharge the
          entire indebtedness on such Securities not theretofore delivered to
          the Trustee for cancellation, for principal and any premium and
          interest 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

                                      -32-
<PAGE>
 
          (3) the Company has delivered to the Trustee an Officers' Certificate
and an Opinion of Counsel, each stating that all conditions precedent herein
provided for relating to the satisfaction and discharge of this Indenture have
been complied with.

          Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 607, the obligations of
the Trustee to any Authenticating Agent under Section 614 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 the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in trust
and applied by it, in accordance with the provisions of the Securities 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 any premium and
interest for whose payment such money has been deposited with the Trustee.

                                      -33-
<PAGE>
 
                                  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 when it 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 any premium on any
Security of that series at its Maturity; or

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

          (4) default in the performance, or breach, of any covenant or warranty
of the Company in this Indenture (other than a covenant or warranty a default in
whose performance or whose breach is elsewhere in this Section specifically
dealt with or which has expressly been included in this Indenture solely for the
benefit of a 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 by the Company (including a default with respect
to Securities of any series other than that series) having an aggregate
principal amount outstanding of in excess of Ten Million Dollars ($10,000,000),
or under any mortgage, indenture or other instrument (including this Indenture)
under which there may be issued or by which there may be secured or evidenced
any indebtedness for money borrowed by the Company (or by any Subsidiary, the
repayment of which the Company has guaranteed or for which the Company is
directly responsible or liable as obligor or guarantor) having an aggregate
principal amount outstanding of in excess of Ten Million Dollars ($10,000,000),
whether such indebtedness now exists or shall hereafter be created, which
default (A) shall constitute a failure to pay any portion of the principal of
such indebtedness when due and payable after the expiration of any applicable
grace period with respect thereto or (B) shall have resulted in such
indebtedness becoming or being declared due and payable prior to the date on

                                      -34-
<PAGE>
 
which it would otherwise have become due and payable, without, in the case of
Clause (A), such indebtedness having been discharged or without, in the case of
Clause (B), such indebtedness having been discharged or such acceleration having
been rescinded or annulled, in each such case 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 indebtedness to
be discharged or cause such acceleration to be rescinded or annulled, as the
case may be, and stating that such notice is a "Notice of Default" hereunder; 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 any Significant
Subsidiary 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 any Significant Subsidiary a bankrupt
or insolvent, or approving as properly filed a petition seeking reorganization,
arrangement, adjustment or composition of or in respect of the Company or any
Significant Subsidiary under any applicable Federal or State law, or appointing
a custodian, receiver, liquidator, assignee, trustee, sequestrator or other
similar official of the Company or any Significant Subsidiary 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 any Significant Subsidiary 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 any
Significant Subsidiary 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 any Significant Subsidiary or of any
substantial part of its property, or the making by it of an assignment for the
benefit of creditors, or the admission by it in writing of its inability to pay
its debts generally as they become due, or the taking of corporate action by the
Company or any Significant Subsidiary in furtherance of any such action; or

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

                                      -35-
<PAGE>
 
SECTION 502.  ACCELERATION OF MATURITY;
              RESCISSION AND ANNULMENT.

          If an Event of Default (other than an Event of Default specified in
Section 501(6) or 501(7)) 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 of all the Securities of that
series (or, if any Securities of that series are Original Issue Discount
Securities, such portion of the principal amount of such Securities as may be
specified by the terms thereof) 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 amount) shall become
immediately due and payable.  If an Event of Default specified in Section 501(6)
or 501 (7) with respect to Securities of any series at the time Outstanding
occurs, the principal amount of all the Securities of that series (or, if any
Securities of that series are Original Issue Discount Securities, such portion
of the principal amount of such Securities as may be specified by the terms
thereof) shall automatically, and without any declaration or other action on the
part of the Trustee or any Holder, 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

          (A) all overdue interest on all Securities of that series,

          (B) the principal of (and premium, if any, on) any Securities of that
     series which have become due otherwise than by such declaration of
     acceleration and any interest thereon at the rate or rates prescribed
     therefor in such Securities,

          (C) to the extent that payment of such interest is lawful, interest
     upon overdue interest at the rate or rates prescribed therefor 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

                                      -36-
<PAGE>
 
          (2) all Events of Default with respect to Securities of that series,
other than the non-payment of the principal of 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 interest on any Security
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 at the Maturity thereof, the Company will, upon demand of
the Trustee, pay to it, for the benefit of the Holders of such Securities, the
whole amount then due and payable on such Securities for principal and any
premium and interest and, to the extent that payment of such interest shall be
legally enforceable, interest on any overdue principal and premium 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, and may
prosecute such proceeding to 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 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 any judicial proceeding relative to the Company (or any
other obligor upon the Securities) its property or its creditors, the Trustee
shall be entitled and empowered, by intervention in such proceeding or

                                      -37-
<PAGE>
 
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. In particular, the Trustee shall be authorized to sit on a committee
of creditors and 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 to make such
payments to the Trustee and, in the event that the Trustee shall consent to the
making of such payments directly to the Holders, to pay to the Trustee any
amount due it for the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel, and any other amounts due the
Trustee under Section 607.

          No provision of this Indenture shall be deemed to authorize the
Trustee to authorize or consent to or accept or adopt on behalf of any Holder
any plan of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding; PROVIDED,
HOWEVER, that the Trustee may, on behalf of the Holders, vote for the election
of a trustee in bankruptcy or similar official and 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 the Securities
may be prosecuted and enforced by the Trustee without the possession of any of
the Securities 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 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 any premium
or interest, upon presentation of the Securities and the notation thereon of the
payment if only partially paid and upon surrender thereof if fully paid:

          FIRST:  To the payment of all amounts due the Trustee under Section
607;

          SECOND:  To the payment of the amounts then due and unpaid for
principal of and any premium and interest on the Securities in respect of which
or for the benefit of which such money has been collected, ratably, without
preference or priority of any kind, according to the amounts due and payable on
such Securities for principal and any premium and interest, respectively; and

                                      -38-
<PAGE>
 
          THIRD:  To the payment of the remainder, if any, to the Company.

SECTION 507.  LIMITATION ON SUITS.

          No Holder of any Security of any series shall have any right to
institute any proceeding, judicial or otherwise, with respect to this Indenture,
or for the appointment of a receiver or trustee, or for any other remedy
hereunder, unless

          (1) such Holder has previously given written notice to the Trustee of
a continuing Event of Default with respect to the Securities of that series;

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

          (3) such Holder or Holders have offered to the Trustee reasonable
indemnity against the costs, expenses and liabilities to be incurred in
compliance with such request;

          (4) the Trustee for 60 days after its receipt of such notice, request
and offer of indemnity has failed to institute any such proceeding; and

          (5) no direction inconsistent with such written request has been given
to the Trustee during such 60-day period by the Holders of a majority in
principal amount of the Outstanding Securities of that series; 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 of 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 shall have the right, which is absolute and unconditional, to
receive payment of the principal of and any premium and (subject to Section 307)
interest on such Security on the respective Stated Maturities expressed in such
Security (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.

                                      -39-
<PAGE>
 
SECTION 509.  RESTORATION OF RIGHTS AND REMEDIES.

          If the Trustee or any Holder 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, subject to any
determination in such proceeding, the Company, the Trustee and the Holders shall
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 in the last paragraph
of Section 306, no right or remedy herein conferred upon or reserved to the
Trustee or to the Holders is intended to be exclusive of any other right or
remedy, and every right and remedy shall, to the extent permitted by law, be
cumulative and in addition to every other right and remedy given hereunder or
now or hereafter existing at law or in equity or otherwise. The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent the
concurrent assertion or employment of any other appropriate right or remedy.

SECTION 511.  DELAY OR OMISSION NOT WAIVER.

          No delay or omission of the Trustee or of any Holder of any Securities
to exercise any right or remedy accruing upon any Event of Default shall impair
any such right or remedy or constitute a waiver of any such Event of Default or
an acquiescence therein. Every right and remedy given by this Article or by law
to the Trustee or to the Holders may be exercised from time to time, and as
often as may be deemed expedient, by the Trustee or by the Holders, as the case
may be.

SECTION 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, and

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

                                      -40-
<PAGE>
 
SECTION 513.  WAIVER OF PAST DEFAULTS.

          The Holders of not less than a majority in principal amount of the
Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series 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 any premium or interest on
any Security of such series, or

          (2) in respect of a covenant or provision hereof which under Article
Nine cannot be modified or amended without the consent of the Holder of each
Outstanding 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 impair any right consequent thereon.

SECTION 514.  UNDERTAKING FOR COSTS.

          In any suit for the enforcement of any right or remedy under this
Indenture, or in any suit against the Trustee for any action taken, suffered or
omitted by it as Trustee, a court may require any party litigant in such suit to
file an undertaking to pay the costs of such suit, and may assess costs against
any such party litigant, in the manner and to the extent provided in the Trust
Indenture Act; PROVIDED that neither this Section nor the Trust Indenture Act
shall be deemed to authorize any court to require such an undertaking or to make
such an assessment in any suit instituted by the Company.

SECTION 515.  WAIVER OF USURY, 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 usury, stay or extension law wherever
enacted, now or at any time hereafter in force, which may affect the covenants
or the performance of this Indenture; and the 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.

                                      -41-
<PAGE>
 
                                  ARTICLE SIX
                                  THE TRUSTEE

SECTION 601.  CERTAIN DUTIES AND RESPONSIBILITIES.

          The duties and responsibilities of the Trustee shall be as provided by
the Trust Indenture Act.

          (a) If an Event of Default has occurred and is continuing, the Trustee
shall exercise the rights and powers vested in it by this Indenture and use the
same degree of care and skill in their exercise as a prudent Person would
exercise or use under the circumstances in the conduct of such Person's own
affairs.

          (b) Except during the continuance of an Event of Default:

              (1) the Trustee undertakes to perform such duties and only such
duties as are specifically set forth in this Indenture and no implied covenants
or obligations shall be read into this Indenture against the Trustee; and

              (2) in the absence of bad faith on its part, the Trustee may
conclusively rely as to the truth of the statements and the correctness of the
opinions expressed therein, upon certificates or opinions furnished to the
Trustee and conforming to the requirements of this Indenture.  However, the
Trustee shall examine the certificates and opinions to determine whether or not
they conform to the requirements of this Indenture.

Notwithstanding the foregoing, no provision of this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur any financial
liability in the performance of any of its duties hereunder, or in the exercise
of any of its rights or powers, if it shall have reasonable grounds for
believing that repayment of such funds or adequate indemnity against such risk
or liability is not reasonably assured to it. Whether or not therein expressly
so provided, every provision of this Indenture relating to the conduct or
affecting the liability of or affording protection to the Trustee shall be
subject to the provisions of this Section.

SECTION 602.  NOTICE OF DEFAULTS.

          If a default occurs hereunder with respect to Securities of any
series, the Trustee shall give the Holders of Securities of such series notice
of such default as and to the extent provided by the Trust Indenture Act;
PROVIDED, HOWEVER, that in the case of any default of the character specified in
Section 501(4) with respect to Securities of such series, no such notice to
Holders shall be given until at least 30 days after the occurrence thereof. For
the purpose of this Section, the term "default" means any event which is, or
after notice or lapse of time or both would become, an Event of Default with
respect to Securities of such series.

                                      -42-
<PAGE>
 
SECTION 603.  CERTAIN RIGHTS OF TRUSTEE.

          Subject to the provisions of Section 601:

          (1) the Trustee may rely upon 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, other evidence of indebtedness or other paper or document believed by it
to be genuine and to have been signed or presented by the proper party or
parties;

          (2) any request or direction of the Company mentioned herein shall be
sufficiently evidenced by a Company Request or Company Order, and any resolution
of the Board of Directors shall be sufficiently evidenced by a Board Resolution;

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

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

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

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

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

          (8) the Trustee shall not be charged with notice or knowledge of any
event or matter (including the occurrence of a default or Event of Default) the
occurrence of which would require it to take any action or omit to take action
hereunder unless such event or matter is actually known to a Responsible Officer

                                      -43-
<PAGE>
 
of the Trustee or unless written notice thereof (making reference to this
Agreement or the Securities of any series) has been received by the Trustee at
its Corporate Trust Office;

          (9) the Trustee shall not be liable for interest on any money received
by it except as the Trustee may agree in writing with the Company;

          (10) money held in trust by the Trustee need not be segregated from
other funds except to the extent required by law; and

          (11) the Trustee shall not be liable for any action it takes or omits
to take in good faith which it believes to be authorized or within its rights or
powers.

SECTION 604.  NOT RESPONSIBLE FOR RECITALS
              OR ISSUANCE OF SECURITIES.

          The recitals contained herein and in the Securities, except the
Trustee's certificates of authentication, 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, except that
the Trustee represents that it is duly authorized to execute and deliver this
Indenture, authenticate the Securities and perform its obligations hereunder.
Neither the Trustee nor any Authenticating Agent shall be accountable for the
use or application by the Company of Securities or the proceeds thereof.

SECTION 605.  MAY HOLD SECURITIES.

          The Trustee, any Authenticating Agent, any Paying Agent, any Security
Registrar or any other agent of the Company, in its individual or any other
capacity, may become the owner or pledgee of Securities and, subject to Sections
608 and 613, 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 606.  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 607.  COMPENSATION AND REIMBURSEMENT.

          The Company agrees

          (1) to pay to the Trustee from time to time reasonable compensation
for all services rendered by it hereunder (which compensation shall not be
limited by any provision of law in regard to the compensation of a trustee of an
express trust);

                                      -44-
<PAGE>
 
          (2) except as otherwise expressly provided herein, to reimburse the
Trustee upon its request for all reasonable expenses, disbursements and advances
incurred or made by the Trustee in accordance with any provision of this
Indenture (including the reasonable compensation and the expenses and
disbursements of its agents and counsel), except any such expense, disbursement
or advance as may be attributable to its negligence or bad faith; and

          (3) to indemnify the Trustee for, and to hold it harmless against, any
loss, liability or expense incurred without negligence or bad faith on its part,
arising out of or in connection with the acceptance or administration of 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.

SECTION 608.  CONFLICTING INTERESTS.

          If the Trustee has or shall acquire a conflicting interest within the
meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act and this Indenture. To the extent
permitted by the Trust Indenture Act, the Trustee shall not be deemed to have a
conflicting interest by virtue of being a trustee under this Indenture with
respect to Securities of more than one series.

SECTION 609.  CORPORATE TRUSTEE REQUIRED; ELIGIBILITY.

          There shall at all times be one (and only one) Trustee hereunder with
respect to the Securities of each series, which may be Trustee hereunder for
Securities of one or more other series.  Each Trustee shall be a Person that is
eligible pursuant to the Trust Indenture Act to act as such and has a combined
capital and surplus of at least $50,000,000. If any such Person publishes
reports of condition at least annually, pursuant to law or to the requirements
of its supervising or examining authority, then for the purposes of this Section
and to the extent permitted by the Trust Indenture Act, 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 with respect to the Securities of any series 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 610.  RESIGNATION AND REMOVAL;
              APPOINTMENT OF SUCCESSOR.

          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 611.

          Subject to the foregoing paragraph, the Trustee may resign at any time
with respect to the Securities of one or more series by giving written notice

                                      -45-
<PAGE>
 
thereof to the Company.  If the instrument of acceptance by a successor Trustee
required by Section 611 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.

          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.

          If at any time:

          (1) the Trustee shall fail to comply with Section 608 after written
request therefor by the Company or by any Holder 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 609 and shall
fail to resign after written request therefor by the Company or by any such
Holder, or

          (3) the Trustee shall become incapable of acting 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, (A) the Company by a Board Resolution may
remove the Trustee with respect to all Securities, or (B) subject to Section
514, any Holder 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.

          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 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) and shall comply with the applicable
requirements of Section 611. 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 in accordance
with the applicable requirements of Section 611, 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 and accepted appointment in the manner required by Section 611, any

                                      -46-
<PAGE>
 
Holder 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.

          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 to all Holders
of Securities of such series in the manner provided 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 611.  ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

          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 its charges, execute and deliver an instrument transferring to such
successor Trustee all the rights, powers and trusts of the retiring Trustee and
shall duly assign, transfer and deliver to such successor Trustee all property
and money held by such retiring Trustee hereunder.

          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

                                      -47-
<PAGE>
 
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 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.

          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 the
first or second preceding paragraph, as the case may be.

          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 612.  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 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 so authenticated with the same
effect as if such successor Trustee had itself authenticated such Securities.

SECTION 613.  PREFERENTIAL COLLECTION OF CLAIMS
              AGAINST COMPANY.

          If and when the Trustee shall be or become a creditor of the Company
(or any other obligor upon the Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).

SECTION 614.  APPOINTMENT OF AUTHENTICATING AGENT.

          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. Wherever reference is

                                      -48-
<PAGE>
 
made in this Indenture to the authentication and delivery of Securities by the
Trustee or the Trustee's certificate of authentication, such reference shall be
deemed to include authentication and delivery on behalf of the Trustee by an
Authenticating Agent and a certificate of authentication executed on behalf of
the Trustee by an Authenticating Agent. Each Authenticating Agent shall be
acceptable to the Company and shall at all times be a corporation organized and
doing business 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 authority. 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 may resign at any time by giving written
notice thereof to the Trustee and to the Company. The Trustee may at any time
terminate the agency of an Authenticating Agent by giving written notice thereof
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 may appoint a successor Authenticating
Agent which shall be acceptable to the Company and shall give notice of such
appointment in the manner provided in Section 106 to all Holders of Securities
of the series with respect to which such Authenticating Agent will serve.  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.
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 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 the Trustee's certificate of authentication, an alternative
certificate of authentication in the following form:

                                      -49-
<PAGE>
 
          This is one of the Securities of the series designated therein
referred to in the within-mentioned Indenture.

                            STATE STREET BANK AND TRUST COMPANY,
                            AS TRUSTEE



                            By:_________________________________________________
                                  AS AUTHENTICATING AGENT


                            By:_________________________________________________
                                  AUTHORIZED OFFICER

                                      -50-
<PAGE>
 
                                 ARTICLE SEVEN
               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701.  COMPANY TO FURNISH TRUSTEE NAMES AND
              ADDRESSES OF HOLDERS.

          The Company will furnish or cause to be furnished to the Trustee

          (1) semi-annually, not later than _________ and _________ in each
year, a list, in such form as the Trustee may reasonably require, of the names
and addresses of the Holders of Securities of each series as of the preceding
_________  or _________ , as the case may be, and

          (2) at such other times as the Trustee may request in writing, within
30 days after the receipt by the Company of any such request, a list of similar
form and content as of a date not more than 15 days prior to the time such list
is furnished,

          EXCLUDING from any such list names and addresses received by the
Trustee in its capacity as Security Registrar.

SECTION 702.  PRESERVATION OF INFORMATION;
              COMMUNICATIONS TO HOLDERS.

          The Trustee shall preserve, in as current a form as is reasonably
practicable, the names and addresses of Holders contained in the most recent
list furnished to the Trustee as provided in Section 701 and the names and
addresses of Holders received by the Trustee in its capacity as Security
Registrar. The Trustee may destroy any list furnished to it as provided in
Section 701 upon receipt of a new list so furnished.

          The rights of Holders to communicate with other Holders with respect
to their rights under this Indenture or under the Securities, and the
corresponding rights and privileges of the Trustee, shall be as provided by the
Trust Indenture Act.

          Every Holder of Securities, by receiving and holding the same, agrees
with the Company and the Trustee that neither the Company nor the Trustee nor
any agent of either of them shall be held accountable by reason of any
disclosure of information as to names and addresses of Holders made pursuant to
the Trust Indenture Act, and that the Trustee shall not be held accountable by
reason of mailing any material pursuant to a request made under Section 312(b)
of the Trust Indenture Act.

SECTION 703.  REPORTS BY TRUSTEE.

          The Trustee shall transmit to Holders such reports concerning the
Trustee and its actions under this Indenture as may be required pursuant to

                                      -51-
<PAGE>
 
Sections 313(a) and (b) of the Trust Indenture Act promptly after each May 15,
beginning with the May 15 commencing in 1999, and in the manner provided
pursuant thereto.

          A copy of each such report shall, at the time of such transmission to
Holders, be filed by the Trustee with each stock exchange upon which any
Securities are listed, with the Commission and with the Company. The Company
will notify the Trustee when any Securities are listed on any stock exchange.

SECTION 704.  REPORTS BY COMPANY.

          The Company shall:

          (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 hereof with the Trustee, in the manner and to the extent
provided in Section 313(c) of the Trust Indenture Act, 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.

                                      -52-
<PAGE>
 
                                  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, partnership or trust, 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 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, properties or assets of the Company would become
subject to a mortgage, pledge, lien, security interest or other encumbrance
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

          (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, comply with this
Article and that all conditions precedent herein provided for relating to such
transaction have been complied with.

                                      -53-
<PAGE>
 
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.

                                      -54-
<PAGE>
 
                                  ARTICLE NINE
                            SUPPLEMENTAL INDENTURES

SECTION 901.  SUPPLEMENTAL INDENTURES WITHOUT CONSENT
              OF HOLDERS.

          Without the consent of any Holders, the Company, when authorized by a
Board Resolution, and the Trustee, at any time and from time to time, may enter
into one or more indentures supplemental hereto, in form satisfactory to the
Trustee, for any of the following purposes:

          (1) to evidence the succession of another 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 additional Events of
Default are to be for the benefit of less than all series of Securities, stating
that such additional Events of Default are expressly being included solely for
the benefit of such series); or

          (4) to add to or change any of the provisions of this Indenture to
such extent as shall be necessary to permit or facilitate the issuance of
Securities in bearer form, registrable or not registrable as to principal, and
with or without interest coupons, or to permit or facilitate the issuance of
Securities in uncertificated form; or

          (5) to add to, change or eliminate any of the provisions of this
Indenture in respect of one or more series of Securities, provided that any such
addition, change or elimination (A) shall neither (i) apply to any Security of
any series created prior to the execution of such supplemental indenture and
entitled to the benefit of such provision nor (ii) modify the rights of the
Holder of any such Security with respect to such provision or (B) shall become
effective only when there is no such Security Outstanding; or

          (6)  to secure the Securities; or

          (7) to establish the form or terms of Securities of any series as
permitted by Sections 201 and 301; 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

                                      -55-
<PAGE>
 
series and to add to or change any of the provisions of this Indenture as shall
be necessary to provide for or facilitate the administration of the trusts
hereunder by more than one Trustee, pursuant to the requirements of Section 611;
or

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

SECTION 902.  SUPPLEMENTAL INDENTURES WITH CONSENT
              OF HOLDERS.

          With the consent of the Holders of not less than a majority in
principal amount of 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 a Board Resolution, and the Trustee may
enter into an indenture or indentures supplemental hereto for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of modifying in any manner the rights of the
Holders of Securities of such series under this Indenture; PROVIDED, HOWEVER,
that no such supplemental indenture shall, without the consent of the Holder of
each Outstanding Security affected thereby,

          (1) change the Stated Maturity of the principal of, or 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 reduce the amount of the principal of an Original Issue
Discount Security or any other Security which would be due and payable upon a
declaration of acceleration of the Maturity thereof pursuant to Section 502, or
change any Place of Payment where, or the coin or currency 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, on or after the Redemption
Date), 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 or certain
defaults hereunder and their consequences) provided for in this Indenture, or

          (3) modify any of the provisions of this Section, Section 513 or
Section 1011, except to increase any such percentage or to provide that certain
other provisions of this Indenture cannot be modified or waived without the
consent of the Holder of each Outstanding Security affected thereby; PROVIDED,
HOWEVER, that this clause shall not be deemed to require the consent of any

                                      -56-
<PAGE>
 
Holder with respect to changes in the references to "the Trustee" and
concomitant changes in this Section and Section 1011, or the deletion of this
proviso, in accordance with the requirements of Sections 611 and 901(8).

          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 (subject to Section 601) 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
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.

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.

                                      -57-
<PAGE>
 
                                  ARTICLE TEN
                                   COVENANTS

SECTION 1001. PAYMENT OF PRINCIPAL, PREMIUM AND INTEREST.

          The Company covenants and agrees for the benefit of each series of
Securities that it will duly and punctually pay (by no later than 12:00 noon,
Boston time, on each payment date) the principal of and any premium and interest
on the Securities of that series in accordance with the terms of the Securities
and this Indenture.

SECTION 1002. MAINTENANCE OF OFFICE OR AGENCY.

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

          The Company may also 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 such purposes and may from time to time rescind
such designations; PROVIDED, HOWEVER, that no such designation or rescission
shall in any manner relieve the Company of its obligation to maintain an office
or agency in each Place of Payment for 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.

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 Securities, it will, on or before each due date of the
principal of or any premium or interest on any of the Securities of that series,
segregate and hold in trust for the benefit of the Persons entitled thereto a
sum sufficient to pay the principal and any premium and interest so becoming due
until such sums shall be paid to such Persons or otherwise disposed of as herein
provided and will promptly notify the Trustee of its action or failure so to
act.

          Whenever the Company shall have one or more Paying Agents for any
series of Securities, it will, prior to each due date of the principal of or any

                                      -58-
<PAGE>
 
premium or interest on any Securities of that series, deposit with a Paying
Agent a sum sufficient to pay such amount, such sum to be held as provided by
the Trust Indenture Act, and (unless such Paying Agent is the Trustee) the
Company will promptly notify the Trustee of its action or failure so to act.

          The Company will cause each Paying Agent for any series of Securities
other than the Trustee to execute and deliver to the Trustee an instrument in
which such Paying Agent shall agree with the Trustee, subject to the provisions
of this Section, that such Paying Agent will (1) comply with the provisions of
the Trust Indenture Act applicable to it as a Paying Agent and (2) during the
continuance of any default by the Company (or any other obligor upon the
Securities of that series) in the making of any payment in respect of the
Securities of that series, upon the written request of the Trustee, forthwith
pay to the Trustee all sums held in trust by such Paying Agent for payment in
respect of the Securities of that series.

          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 money.

          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 any premium or
interest 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 thereof,
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 a newspaper published in the English language, customarily
published on each Business Day and of general circulation in New York, New York,
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. 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 or not to the best knowledge of the signers thereof
the Company is in default in the performance and observance of any of the terms,
provisions and conditions of this Indenture (without regard to any period of

                                      -59-
<PAGE>
 
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 1005. 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 (partnership 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 1006. 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 1007. 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 1008. INSURANCE.

          The Company will cause each of its properties and each of the
properties of its Subsidiaries which are of an insurable nature to be insured
against loss of damage with insurers of recognized responsibility, in
commercially reasonable amounts and types.


                                      -60-
<PAGE>
SECTION 1009. RESTRICTIONS ON INDEBTEDNESS.
 
          (1) The Company will not, and will not permit any Subsidiary to, incur
any Indebtedness other than intercompany debt representing Indebtedness to which
the only parties are the Company and any of its Subsidiaries (but only so long
as such Indebtedness is held solely by any of the Company and any Subsidiary)
that is subordinate in right of payment to any Outstanding Securities, if,
immediately after giving effect to the incurrence of such additional
Indebtedness, the aggregate principal amount of all outstanding Indebtedness of
the Company and its Subsidiaries on a consolidated basis is greater than 60% of
the sum of (i) Total Assets as of the end of the calendar quarter covered in the
Company's Annual Report on Form 10-K or Quarterly Report on Form 10-Q, as the
case may be, most recently filed with the Trustee prior to the incurrence of
such additional Indebtedness and (ii) the increase in Total Assets from the end
of such quarter including, without limitation, any increase in Total Assets
resulting from the incurrence of such additional Indebtedness (such increase,
together with the Total Assets, being referred to herein as "Adjusted Total
Assets").

          (2) In addition to the foregoing limitation on the incurrence of
Indebtedness, the Company will not, and will not permit any Subsidiary to, incur
any Indebtedness if the ratio of Consolidated Income Available for Debt Service
to the Annual Service Charge for the four consecutive fiscal quarters most
recently ended prior to the date on which such additional Indebtedness is to be
incurred shall have been less than 1.5 to 1, on a pro forma basis, after giving
effect to the incurrence of such Indebtedness and to the application of the
proceeds therefrom and calculated on the assumption that (i) such Indebtedness
and any other Indebtedness incurred by the Company or its Subsidiaries since the
first day of such four-quarter period and the application of the proceeds
therefrom, including to refinance other Indebtedness, had occurred at the
beginning of such period, (ii) the repayment or retirement of any other
Indebtedness by the Company or its Subsidiaries since the first day of such
four-quarter period had occurred at the beginning of such period (except that,
in making such computation, the amount of Indebtedness under any revolving
credit facility shall be computed based upon the average daily balance of such
Indebtedness during such period), (iii) the income earned on any increase in
Adjusted Total Assets since the end of such four-quarter period had been earned,
on an annualized basis, during such period, and (iv) in the case of any
acquisition or disposition by the Company or any Subsidiary of any asset or
group of assets since the first day of such four-quarter period, including,
without limitation, by merger, stock purchase or sale, or asset purchase or
sale, such acquisition or disposition or any related repayment of Indebtedness
had occurred as of the first day of such period with the appropriate adjustments
with respect to such acquisition or disposition being included in such pro forma
calculation.

          (3) In addition to the foregoing limitations on the incurrence of
Indebtedness, the Company will not, and will not permit any Subsidiary to, incur
any Secured Indebtedness, whether owned at the date of the Indenture or
thereafter acquired, if, immediately after giving effect to the incurrence of
such additional Secured Indebtedness, the aggregate principal amount of all
outstanding Secured Indebtedness is greater than 40% of Adjusted Total Assets.

                                      -61-
<PAGE>
 
          (4) In addition to the foregoing limitations on the incurrence of
Indebtedness, the Company (i) will not permit any Subsidiary that it Controls to
incur any unsecured Indebtedness other than intercompany debt representing
Indebtedness to which the only parties are the Company and any of its
Subsidiaries that is subordinate in right of payment to any Outstanding
Securities, and  (ii) will enforce against each Subsidiary the agreements
referred to in clause (ii) of Section 114 of this Indenture.

          For purposes of the foregoing provisions regarding the limitation on
the incurrence of Indebtedness, Indebtedness shall be deemed to be "incurred" by
the Company or a Subsidiary whenever the Company or its Subsidiary shall create,
assume, guarantee or otherwise become liable in respect thereof.


          (5) For so long as there are Outstanding any Securities entitled to
the benefit of this Section 1009(3), the Company will maintain Total
Unencumbered Assets of not less than 150% of the aggregate outstanding principal
amount of all outstanding Unsecured Indebtedness.

SECTION 1010.  PROVISION OF FINANCIAL INFORMATION.

          Whether or not the Company is subject to Section 13 or Section
15(d) of the Exchange Act, the Company will, to the extent permitted under the
Exchange Act, file with the Commission the annual reports, quarterly reports and
other documents that the Company would have been required to file with the
Commission pursuant to Section 13 or Section 15(d) of the Exchange Act (the
"Financial Statements") if the Company were so subject, such documents to be
filed with the Commission on or prior to the respective dates (the "Required
Filing Dates") by which the Company would have been required so to file such
documents if the Company were so subject. The Company will also in any event (x)
not later than the 15th day following each Required Filing Date (i) transmit by
mail to all Holders, as their names and addresses appear in the Security
Register, without cost to such Holders, copies of the annual reports and
quarterly reports that the Company would have been required to file with the
Commission pursuant to Section 13 or Section 15(d) of the Exchange Act if the
Company were subject to such Sections, and (ii) file with the Trustee copies of
the annual reports, quarterly reports and other documents that the Company would
have been required to file with the Commission pursuant to Section 13 or Section
15(d) of the Exchange Act if the Company were subject to such Sections and (y)
if filing such documents by the Company with the Commission is not permitted
under the Exchange Act, promptly upon written request and payment of the
reasonable cost of duplication and delivery, supply copies of such documents to
any prospective Holder.

SECTION 1011.  WAIVER OF CERTAIN COVENANTS.

          Except as otherwise specified as contemplated by Section 301
for Securities of such series, the Company may, with respect to the Securities
of any series, omit in any particular instance to comply with any term,
provision or condition set forth in any covenant provided pursuant to Section

                                      -62-
<PAGE>
 
301(16), 901(2) or 901(7) for the benefit of the Holders of such series or in
any of Sections 1006 to 1010, inclusive, if before the time for such compliance
the Holders of at least a majority in principal amount of the Outstanding
Securities of such series shall, by Act of such Holders, either waive such
compliance in such instance or generally waive compliance 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 in respect of any such term, provision or condition shall remain in
full force and effect.

                                      -63-
<PAGE>
 
                                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 such
Securities) 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 a Board Resolution or in another manner specified as contemplated
by Section 301 for such Securities. In case of any redemption at the election of
the Company of less than all the Securities of any series (including any such
redemption affecting only a single Security), 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, of the principal amount of Securities of such series to be redeemed and,
if applicable, of the tenor of the Securities 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 are to be redeemed
(unless all the Securities of such series and of a specified tenor are to be
redeemed or unless such redemption affects only a single Security), the
particular Securities to be redeemed shall be selected not more than 60 days
prior to the Redemption Date by the Trustee, from the Outstanding Securities of
such series not previously called for redemption, by such method as the Trustee
shall deem fair and appropriate and which may provide for the selection for
redemption of a portion of the principal amount of any Security of such series,
PROVIDED that the unredeemed portion of the principal amount of any Security
shall be in an authorized denomination (which shall not be less than the minimum
authorized denomination) for such Security. If less than all the Securities of
such series and of a specified tenor are to be redeemed (unless such redemption
affects only a single Security), the particular Securities to be redeemed shall
be selected not more than 60 days prior to the Redemption Date by the Trustee,
from the Outstanding Securities of such series and specified tenor not
previously called for redemption in accordance with the preceding sentence.

          The Trustee shall promptly notify the Company in writing of the
Securities selected for redemption as aforesaid and, in case of any Securities
selected for partial redemption as aforesaid, the principal amount thereof to be
redeemed.

                                      -64-
<PAGE>
 
          The provisions of the two preceding paragraphs shall not apply with
respect to any redemption affecting only a single Security, whether such
Security is to be redeemed in whole or in part. In the case of any such
redemption in part, the unredeemed portion of the principal amount of the
Security shall be in an authorized denomination (which shall not be less than
the minimum authorized denomination) for such Security.

          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 by first-class mail, postage
prepaid, mailed not less than 30 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
at the address for such Holder appearing in the Security Register, 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.

          All notices of redemption shall state:

          (1)  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 the Outstanding Securities of any series
     consisting of more than a single Security are to be redeemed, the
     identification (and, in the case of partial redemption of any such
     Securities, the respective principal amounts) of the particular Securities
     to be redeemed and, if less than all the Outstanding Securities of any
     series consisting of a single Security are to be redeemed, the principal
     amount of the particular Security to be redeemed,

          (4) 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 portion
     thereof, to be redeemed and, if applicable, that interest thereon will
     cease to accrue on and after said date,

          (5) the place or places where each such Security is to be surrendered
     for payment of the Redemption Price,

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

                                      -65-
<PAGE>
 
          (7) 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 sufficient to pay 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, and from and after such date (unless the
Company shall default in the payment of the Redemption Price and accrued
interest) such Securities shall cease to bear interest.  Upon surrender of any
such Security for redemption in accordance with said notice, such Security shall
be paid by the Company at the Redemption Price, together with accrued interest
to the Redemption Date; PROVIDED, HOWEVER, that, unless otherwise specified as
contemplated by Section 301, installments of interest whose Stated Maturity is
on or prior to the Redemption Date will 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 Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal and any premium shall, until
paid, bear interest from the Redemption Date at the rate prescribed therefor in
the Security.

SECTION 1107. SECURITIES REDEEMED IN PART.

          Any Security which is to be redeemed only in part 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 cause to be executed on its
behalf, 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
and of like tenor, 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.

                                      -66-
<PAGE>
 
                                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 any series except as otherwise specified as
contemplated by Section 301 for such Securities.

          The minimum amount of any sinking fund payment provided for by the
terms of any Securities 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 is herein referred to as an "optional sinking fund
payment".  If provided for by the terms of any Securities, the cash amount of
any 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
as provided for by the terms of such Securities.

SECTION 1202.    SATISFACTION OF SINKING FUND
                 PAYMENTS WITH SECURITIES.

          The Company (1) may deliver Outstanding Securities of a series (other
than any previously called for redemption) and (2) may apply as a credit
Securities of a 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 sinking fund
payment with respect to any Securities of such series required to be made
pursuant to the terms of such Securities as and to the extent provided for by
the terms of such Securities; PROVIDED that the Securities to be so credited
have not been previously so credited.  The Securities to be so credited shall be
received and credited for such purpose by the Trustee at the Redemption Price,
as specified in the Securities so to be redeemed, for redemption through
operation of the sinking fund and the amount of such 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 any
Securities, the Company will deliver to the Trustee an Officers' Certificate
specifying the amount of the next ensuing sinking fund payment for such
Securities pursuant to the terms of such Securities, the portion thereof, if
any, which is to be satisfied by payment of cash and the portion thereof, if
any, which is to be satisfied by delivering and crediting Securities pursuant to
Section 1202 and will also deliver to the Trustee any Securities to be so
delivered. 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 prior to each such sinking fund payment date, the Trustee shall select
the Securities to be redeemed upon such sinking fund payment date in the manner

                                      -67-
<PAGE>
 
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.

                                      -68-
<PAGE>
 
                                ARTICLE THIRTEEN
                       DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1301.    COMPANY'S OPTION TO EFFECT DEFEASANCE
                 OR COVENANT DEFEASANCE.

          The Company may elect, at its option at any time, to have Section 1302
or Section 1303 applied to any Securities or any series of Securities, as the
case may be, designated pursuant to Section 301 as being defeasible pursuant to
such Section 1302 or 1303, in accordance with any applicable requirements
provided pursuant to Section 301 and upon compliance with the conditions set
forth below in this Article.  Any such election shall be evidenced by a Board
Resolution or in another manner specified as contemplated by Section 301 for
such Securities.

SECTION 1302.    DEFEASANCE AND DISCHARGE.

          Upon the Company's exercise of its option (if any) to have this
Section applied to any Securities or any series of Securities, as the case may
be, the Company shall be deemed to have been discharged from its obligations
with respect to such Securities as provided in this Section on and after the
date the conditions set forth in Section 1304 are satisfied (hereinafter called
"Defeasance"). For this purpose, such Defeasance means that the Company shall be
deemed to have paid and discharged the entire indebtedness represented by such
Securities and to have satisfied all its other obligations under such Securities
and this Indenture insofar as such Securities are concerned (and the Trustee, at
the expense of the Company, shall execute proper instruments acknowledging the
same), subject to the following which shall survive until otherwise terminated
or discharged hereunder: (1) the rights of Holders of such Securities 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 any
premium and interest on such Securities when payments are due, (2) the Company's
obligations with respect to such Securities under Sections 304, 305, 306, 1002
and 1003, (3) the rights, powers, trusts, duties and immunities of the Trustee
hereunder and (4) this Article. Subject to compliance with this Article, the
Company may exercise its option (if any) to have this Section applied to any
Securities notwithstanding the prior exercise of its option (if any) to have
Section 1303 applied to such Securities.

SECTION 1303.    COVENANT DEFEASANCE.

          Upon the Company's exercise of its option (if any) to have this
Section applied to any Securities or any series of Securities, as the case may
be, (1) the Company shall be released from its obligations under Section 801(3),
Sections 1006 through 1010, inclusive, and any covenants provided pursuant to
Section 301(16), 901(2) or 901(7) for the benefit of the Holders of such
Securities and (2) the occurrence of any event specified in Sections 501(4)
(with respect to any of Section 801(3), Sections 1006 through 1010, inclusive,
and any such covenants provided pursuant to Section 301(16), 901(2) or 901(7)),
501(5) and 501(8) shall be deemed not to be or result in an Event of Default, in

                                      -69-
<PAGE>
 
each case with respect to such Securities as provided in this Section on and
after the date the conditions set forth in Section 1304 are satisfied
(hereinafter called "Covenant Defeasance"). For this purpose, such Covenant
Defeasance means that, with respect to such Securities, 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 specified Section (to the extent so specified
in the case of Section 501(4)), whether directly or indirectly by reason of any
reference elsewhere herein to any such Section or by reason of any reference in
any such Section to any other provision herein or in any other document, but the
remainder of this Indenture and such Securities shall be unaffected thereby.

SECTION 1304.    CONDITIONS TO DEFEASANCE OR
                 COVENANT DEFEASANCE.

          The following shall be the conditions to the application of Section
1302 or Section 1303 to any Securities or any series of Securities, as the case
may be:

          (1) The Company shall irrevocably have deposited or caused to be
deposited with the Trustee (or another trustee which satisfies the requirements
contemplated by Section 609 and agrees to comply with the provisions of this
Article 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 benefits of the Holders of such Securities, (A) money in an amount, or
(B) U.S. Government Obligations 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, money in an amount, or
(C) a combination thereof, in each case 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 any such other qualifying trustee)
to pay and discharge, the principal of and any premium and interest on such
Securities on the respective Stated Maturities, in accordance with the terms of
this Indenture and such Securities. As used herein, "U.S. Government Obligation"
means (x) any security which is (i) a direct obligation of the United States of
America for the payment of which the full faith and credit of the United States
of America is pledged or (ii) an obligation of a Person controlled or supervised
by and acting as an agency or instrumentality of the United States of America
the payment of which is unconditionally guaranteed as a full faith and credit
obligation by the United States of America, which, in either case (i) or (ii),
is not callable or redeemable at the option of the issuer thereof, and (y) any
depositary receipt issued by a bank (as defined in Section 3(a)(2) of the
Securities Act) as custodian with respect to any U.S. Government Obligation
which is specified in Clause (x) above and held by such bank for the account of
the holder of such depositary receipt, or with respect to any specific payment
of principal of or interest on any U.S. Government Obligation which is so
specified and held, 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 depositary receipt from any amount received by the custodian in respect of
the U.S. Government Obligation or the specific payment of principal or interest
evidenced by such depositary receipt.

                                      -70-
<PAGE>
 
          (2) In the event of an election to have Section 1302 apply to any
Securities or any series of Securities, as the case may be, the Company shall
have delivered to the Trustee an Opinion of Counsel stating that (A) the Company
has received from, or there has been published by, the Internal Revenue Service
a ruling or (B) since the date of this instrument, there has been a change in
the applicable Federal income tax law, in either case (A) or (B) to the effect
that, and based thereon such opinion shall confirm that, the Holders of such
Securities will not recognize gain or loss for Federal income tax purposes as a
result of the deposit, Defeasance and discharge to be effected with respect to
such Securities and will be subject to Federal income tax on the same amount, in
the same manner and at the same times as would be the case if such deposit,
Defeasance and discharge were not to occur.

          (3) In the event of an election to have Section 1303 apply to any
Securities or any series of Securities, as the case may be, the Company shall
have delivered to the Trustee an Opinion of Counsel to the effect that the
Holders of such Securities will not recognize gain or loss for Federal income
tax purposes as a result of the deposit and Covenant Defeasance to be effected
with respect to such Securities and will be subject to Federal income tax on the
same amount, in the same manner and at the same times as would be the case if
such deposit and Covenant Defeasance were not to occur.

          (4) The Company shall have delivered to the Trustee an Officers'
Certificate to the effect that neither such Securities nor any other Securities
of the same series, if then listed on any securities exchange, will be delisted
as a result of such deposit.

          (5) No event which is, or after notice or lapse of time or both would
become, an Event of Default with respect to such Securities or any other
Securities shall have occurred and be continuing at the time of such deposit or,
with regard to any such event specified in Sections 501(6) and (7), at any time
on or prior to the 90th day after the date of such deposit (it being understood
that this condition shall not be deemed satisfied until after such 90th day).

          (6) Such Defeasance or Covenant Defeasance shall not cause the Trustee
to have a conflicting interest within the meaning of the Trust Indenture Act
(assuming all Securities are in default within the meaning of such Act).

          (7) Such Defeasance or Covenant Defeasance shall not result in a
breach or violation of, or constitute a default under, any other agreement or
instrument to which the Company is a party or by which it is bound.

          (8) Such Defeasance or Covenant Defeasance shall not result in the
trust arising from such deposit constituting an investment company within the
meaning of the Investment Company Act unless such trust shall be registered
under such Act or exempt from registration thereunder.

                                      -71-
<PAGE>
 
          (9) The Company shall have delivered to the Trustee an Officers'
Certificate and an Opinion of Counsel, each stating that all conditions
precedent with respect to such Defeasance or Covenant Defeasance have been
complied with.


SECTION 1305.  DEPOSITED MONEY AND U.S. GOVERNMENT
               OBLIGATIONS TO BE HELD IN TRUST;
               MISCELLANEOUS PROVISIONS.

          Subject to the provisions of the last paragraph of Section 1003, all
money and U.S. Government Obligations (including the proceeds thereof) deposited
with the Trustee or other qualifying trustee (solely for purposes of this
Section and Section 1306, the Trustee and any such other trustee are referred to
collectively as the "Trustee") pursuant to Section 1304 in respect of any
Securities shall be held in trust and applied by the Trustee, in accordance with
the provisions of such Securities and this Indenture, to the payment, either
directly or through any such Paying Agent (including the Company acting as its
own Paying Agent) as the Trustee may determine, to the Holders of such
Securities, of all sums due and to become due thereon in respect of principal
and any premium and interest, but money so held in trust need not be segregated
from other funds except to the extent required by law. The Company shall pay and
indemnify the Trustee against any tax, fee or other charge imposed on or
assessed against the U.S. 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
Outstanding Securities.

          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 U.S. Government Obligations held by it as provided in Section 1304 with
respect to any Securities 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 the Defeasance or Covenant Defeasance, as
the case may be, with respect to such Securities.

SECTION 1306. REINSTATEMENT.

          If the Trustee or the Paying Agent is unable to apply any money in
accordance with this Article with respect to any Securities by reason of any
order or judgment of any court or governmental authority enjoining, restraining
or otherwise prohibiting such application, then the obligations under this
Indenture and such Securities from which the Company has been discharged or
released pursuant to Section 1302 or 1303 shall be revived and reinstated as
though no deposit had occurred pursuant to this Article with respect to such
Securities, until such time as the Trustee or Paying Agent is permitted to apply
all money held in trust pursuant to Section 1305 with respect to such Securities
in accordance with this Article; PROVIDED, HOWEVER, that if the Company makes

                                      -72-
<PAGE>
 
any payment of principal of or any premium or interest on any such Security
following such reinstatement of its obligations, the Company shall be subrogated
to the rights (if any) of the Holders of such Securities to receive such payment
from the money so held in trust.

                                      -73-
<PAGE>
 
                                ARTICLE FOURTEEN
                       REPAYMENT AT THE OPTION OF HOLDERS

SECTION 1401.    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, if any, and (except as otherwise specified by the terms of such
series established pursuant to Section 301) in accordance with this Article.

SECTION 1402.    REPAYMENT OF SECURITIES.

          Securities of any series subject to repayment in whole or in part at
the option of the Holders thereof will, unless otherwise provided in the terms
of such Securities, be repaid at a price equal to the principal amount thereof,
together with interest, if any, thereon accrued to the Repayment Date specified
in or pursuant to the terms of such Securities. The Company covenants that on or
before the day prior to the Repayment Date (but no later than 10:00 a.m. Boston
time on 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 sufficient to pay the
principal (or, if so provided by the terms of the Securities of any series, a
percentage of the principal) of, and (except if the Repayment Date shall be an
Interest Payment Date) accrued interest on, all the Securities or portions
thereof, as the case may be, to be repaid on such date.

SECTION 1403.    EXERCISE OF OPTION.

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

                                      -74-
<PAGE>
 
letter shall only be effective if such Security and form duly completed are
received by the Trustee by such fifth Business Day. If less than the entire
principal amount of such Security is to be repaid in accordance with the terms
of such Security, the principal amount of such Security to be repaid, in
increments of the minimum denomination for Securities of such series, shall be
stated in a writing accompanying such Security. 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 1404.    WHEN SECURITIES PRESENTED FOR RECIPIENT
                 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.
Upon surrender of any such Security for repayment in accordance with such
provisions, 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 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 as
the close of business on the relevant Record Dates according to their terms and
the provisions of Section 307.

          If the principal amount of any Security surrendered for repayment
shall not be so repaid upon surrender thereof, such principal amount (together
with interest, if any, thereon accrued to such Repayment Date) shall, until
paid, bear interest from the Repayment Date at the rate of interest or Yield to
Maturity (in the case of Original Issue Discount Securities) set forth in such
Security.

SECTION 1405.    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 charge and at the expense of the
Company, a new 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.

          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.

                                      -75-
<PAGE>
 
          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.

                         WEEKS REALTY, L.P.

                         By:  Weeks GP Holdings, Inc.,
                              its general partner


                         By:____________________________________________________
                               Name:
                               Title:

Attest:________________________________________

                         STATE STREET BANK AND TRUST COMPANY,
                         as Trustee


                         By:____________________________________________________
                               Name:
                               Title:

Attest:________________________________________

                                      -76-
<PAGE>
 
STATE OF GEORGIA         )
                         ) ss.:
COUNTY OF                )

          On the _______ day of March , 1998, before me personally came
______________ ____________, to me known, who, being by me duly sworn, did
depose and say that he is _____________ of Weeks GP Holdings, Inc., the general
partner of Weeks Realty, L.P., the partnership described in and which executed
the foregoing instrument; that he knows the seal of said partnership; that the
seal affixed to said instrument is such seal; that it was so affixed by
authority of the Board of Directors of the general partner of such partnership;
and that he signed his name thereto by like authority.

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

                                      -77-
<PAGE>
 
STATE OF __________________)
                           ) ss.:
COUNTY OF _________________)

          On the _____ day of March, 1998, before me personally came
________________ ____________, to me known, who, being by me duly sworn, did
depose and say that he is_________________ of State Street Bank and Trust
Company, a Massachusetts trust company, the national banking association, the
Trustee described in and which executed the foregoing instrument; that he knows
the seal of said banking; that the seal affixed to said instrument is such seal;
that it was so affixed by authority of the Board of Directors of said banking
association; and that he signed his name thereto by like authority.



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

                                      -78-
<PAGE>
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                      Page
                                                                                      ----
<S>      <C>                 <C>                                                      <C>

         RECITALS OF THE COMPANY...................................................... 
                                                                                       
ARTICLE ONE      DEFINITIONS AND OTHER PROVISIONS                                      
                 OF GENERAL APPLICATION............................................... 
                                                                                       
          SECTION 101.       DEFINITIONS.............................................. 
          SECTION 102.       COMPLIANCE CERTIFICATES AND OPINIONS..................... 
          SECTION 103.       FORM OF DOCUMENTS DELIVERED TO TRUSTEE................... 
          SECTION 104.       ACTS OF HOLDERS; RECORD DATES............................ 
          SECTION 105.       NOTICES, ETC., TO TRUSTEE AND COMPANY.................... 
          SECTION 106.       NOTICE TO HOLDERS; WAIVER................................ 
          SECTION 107.       CONFLICT WITH TRUST INDENTURE ACT........................ 
          SECTION 108.       EFFECT OF HEADINGS AND TABLE OF CONTENTS................. 
          SECTION 109.       SUCCESSORS AND ASSIGNS................................... 
          SECTION 110.       SEPARABILITY CLAUSE...................................... 
          SECTION 111.       BENEFITS OF INDENTURE.................................... 
          SECTION 112.       GOVERNING LAW............................................ 
          SECTION 113.       LEGAL HOLIDAYS........................................... 
                                                                                       
ARTICLE TWO     SECURITY FORMS........................................................ 
                                                                                       
          SECTION 201.       FORMS GENERALLY.......................................... 
          SECTION 202.       FORM OF FACE OF SECURITY................................. 
          SECTION 203.       FORM OF REVERSE OF SECURITY.............................. 
          SECTION 204.       FORM OF LEGEND FOR GLOBAL SECURITIES..................... 
          SECTION 205.       FORM OF TRUSTEE'S CERTIFICATE                             
                             OF AUTHENTICATION........................................ 
                                                                                       
ARTICLE THREE   THE SECURITIES........................................................ 
                                                                                       
          SECTION 301.       AMOUNT UNLIMITED; ISSUABLE IN SERIES..................... 
          SECTION 302.       DENOMINATIONS............................................ 
          SECTION 303.       EXECUTION, AUTHENTICATION, DELIVERY                       
                             AND DATING............................................... 
          SECTION 304.       TEMPORARY SECURITIES..................................... 
          SECTION 305.       REGISTRATION, REGISTRATION OF TRANSFER                    
                             AND EXCHANGE............................................. 
          SECTION 306.       MUTILATED, DESTROYED, LOST AND                            
                             STOLEN SECURITIES........................................ 
</TABLE> 
<PAGE>
<TABLE> 
<S>                          <C>                                                       <C>  
          SECTION 307.       PAYMENT OF INTEREST; INTEREST RIGHTS
                             PRESERVED................................................ 
          SECTION 308.       PERSONS DEEMED OWNERS.................................... 
          SECTION 309.       CANCELLATION............................................. 
          SECTION 310.       COMPUTATION OF INTEREST.................................. 
                                                                                       
ARTICLE FOUR    SATISFACTION AND DISCHARGE............................................ 
                                                                                       
          SECTION 401.       SATISFACTION AND DISCHARGE OF INDENTURE.................. 
          SECTION 402.       APPLICATION OF TRUST MONEY............................... 
                                                                                       
ARTICLE FIVE    REMEDIES.............................................................. 
                                                                                       
          SECTION 501.       EVENTS OF DEFAULT........................................ 
          SECTION 502.       ACCELERATION OF MATURITY; RESCISSION AND ANNULMENT....... 
          SECTION 503.       COLLECTION OF INDEBTEDNESS AND SUITS                      
                             FOR ENFORCEMENT BY TRUSTEE............................... 
          SECTION 504.       TRUSTEE MAY FILE PROOFS OF CLAIM......................... 
          SECTION 505.       TRUSTEE MAY ENFORCE CLAIMS WITHOUT                        
                             POSSESSION OF SECURITI................................... 
          SECTION 506.       APPLICATION OF MONEY COLLECTED........................... 
          SECTION 507.       LIMITATION ON SUITS...................................... 
          SECTION 508.       UNCONDITIONAL RIGHT OF HOLDERS TO                         
                             RECEIVE PRINCIPAL, PREM.................................. 
          SECTION 509.       RESTORATION OF RIGHTS AND REMEDIES....................... 
          SECTION 510.       RIGHTS AND REMEDIES CUMULATIVE........................... 
          SECTION 511.       DELAY OR OMISSION NOT WAIVER............................. 
          SECTION 512.       CONTROL BY HOLDERS....................................... 
          SECTION 513.       WAIVER OF PAST DEFAULTS.................................. 
          SECTION 514.       UNDERTAKING FOR COSTS.................................... 
          SECTION 515.       WAIVER OF USURY, STAY OR EXTENSION LAWS.................. 
                                                                                       
                                                                                       
ARTICLE SIX     THE TRUSTEE........................................................... 
                                                                                       
          SECTION 601.       CERTAIN DUTIES AND RESPONSIBILITIES...................... 
          SECTION 602.       NOTICE OF DEFAULTS....................................... 
          SECTION 603.       CERTAIN RIGHTS OF TRUSTEE................................ 
          SECTION 604.       NOT RESPONSIBLE FOR RECITALS                              
                             OR ISSUANCE OF SECURITIES................................ 
          SECTION 605.       MAY HOLD SECURITIES...................................... 
          SECTION 606.       MONEY HELD IN TRUST...................................... 
          SECTION 607.       COMPENSATION AND REIMBURSEMENT........................... 
          SECTION 608.       CONFLICTING INTERESTS.................................... 
          SECTION 609.       CORPORATE TRUSTEE REQUIRED; ELIGIBILITY.................. 
</TABLE> 
                                     -ii-
<PAGE>
<TABLE> 
<S>                          <C>                                                       <C>  
          SECTION 610.       RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR........ 
          SECTION 611.       ACCEPTANCE OF APPOINTMENT BY SUCCESSOR................... 
          SECTION 612.       MERGER, CONVERSION, CONSOLIDATION                         
                             OR SUCCESSION TO BUSINE.................................. 
          SECTION 613.       PREFERENTIAL COLLECTION OF CLAIMS                         
                             AGAINST COMPANY.......................................... 
          SECTION 614.       APPOINTMENT OF AUTHENTICATING AGENT...................... 
                                                                                       
ARTICLE SEVEN  HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY...................... 
                                                                                       
          SECTION 701.       COMPANY TO FURNISH TRUSTEE NAMES AND                      
                             ADDRESSES OF HOLDERS..................................... 
          SECTION 702.       PRESERVATION OF INFORMATION;                              
                             COMMUNICATIONS TO HOLDERS................................ 
          SECTION 703.       REPORTS BY TRUSTEE....................................... 
          SECTION 704.       REPORTS BY COMPANY....................................... 
                                                                                       
ARTICLE EIGHT  CONSOLIDATION, MERGER, CONVEYANCE,                                      
               TRANSFER OR LEASE...................................................... 
                                                                                       
          SECTION 801.       COMPANY MAY CONSOLIDATE, ETC., ONLY ON CERTAIN TERMS..... 
          SECTION 802.       SUCCESSOR SUBSTITUTED.................................... 
                                                                                       
ARTICLE NINE   SUPPLEMENTAL INDENTURES................................................ 
                                                                                       
          SECTION 901.       SUPPLEMENTAL INDENTURES WITHOUT                           
                             CONSENT OF HOLDERS....................................... 
          SECTION 902.       SUPPLEMENTAL INDENTURES WITH CONSENT                      
                             OF HOLDERS............................................... 
          SECTION 903.       EXECUTION OF SUPPLEMENTAL INDENTURES..................... 
          SECTION 904.       EFFECT OF SUPPLEMENTAL INDENTURES........................ 
          SECTION 905.       CONFORMITY WITH TRUST INDENTURE ACT...................... 
          SECTION 906.       REFERENCE IN SECURITIES TO SUPPLEMENTAL                   
                             INDENTURES............................................... 
                                                                                       
                                                                                       
ARTICLE TEN    COVENANTS.............................................................. 
                                                                                       
          SECTION 1001.      PAYMENT OF PRINCIPAL, PREMIUM AND INTEREST............... 
          SECTION 1002.      MAINTENANCE OF OFFICE OR AGENCY.......................... 
          SECTION 1003.      MONEY FOR SECURITIES PAYMENTS                             
                             TO BE HELD IN TRUST...................................... 
          SECTION 1004.      STATEMENT BY OFFICERS AS TO DEFAULT...................... 
          SECTION 1005.      EXISTENCE................................................ 
</TABLE> 
                                     -iii-

<PAGE>
<TABLE> 
<S>                          <C>                                                       <C>  
          SECTION 1006.      MAINTENANCE OF PROPERTIES................................ 
          SECTION 1007.      PAYMENT OF TAXES AND OTHER CLAIMS........................ 
          SECTION 1008.      INSURANCE................................................ 
          SECTION 1009.      RESTRICTIONS ON INDEBTEDNESS............................. 
          SECTION 1010.      PROVISION OF FINANCIAL INFORMATION....................... 
          SECTION 1011.      WAIVER OF CERTAIN COVENANTS.............................. 
                                                                                       
ARTICLE ELEVEN REDEMPTION OF SECURITIES............................................... 
                                                                                       
          SECTION 1101.      APPLICABILITY OF ARTICLE................................. 
          SECTION 1102.      ELECTION TO REDEEM; NOTICE TO TRUSTEE.................... 
          SECTION 1103.      SELECTION BY TRUSTEE OF SECURITIES                        
                             TO BE REDEEMED........................................... 
          SECTION 1104.      NOTICE OF REDEMPTION..................................... 
          SECTION 1105.      DEPOSIT OF REDEMPTION PRICE.............................. 
          SECTION 1106.      SECURITIES PAYABLE ON REDEMPTION DATE.................... 
          SECTION 1107.      SECURITIES REDEEMED IN PART.............................. 
                                                                                       
ARTICLE TWELVE SINKING FUNDS.......................................................... 
                                                                                       
          SECTION 1201.      APPLICABILITY OF ARTICLE................................. 
          SECTION 1202.      SATISFACTION OF SINKING FUND                              
                             PAYMENTS WITH SECURITIES................................. 
          SECTION 1203.      REDEMPTION OF SECURITIES FOR SINKING FUND................ 
                                                                                       
                                                                                       
ARTICLE THIRTEEN             DEFEASANCE AND COVENANT DEFEASANCE....................... 
                                                                                       
          SECTION 1301.      COMPANY'S OPTION TO EFFECT DEFEASANCE                     
                             OR COVENANT DEFEASANCE................................... 
          SECTION 1302.      DEFEASANCE AND DISCHARGE................................. 
          SECTION 1303.      COVENANT DEFEASANCE...................................... 
          SECTION 1304.      CONDITIONS TO DEFEASANCE OR                               
                             COVENANT DEFEASANCE...................................... 
          SECTION 1305.      DEPOSITED MONEY AND U.S. GOVERNMENT                       
                             OBLIGATIONS TO BE HELD IN TRUST;                          
                             MISCELLANEOUS PROVISIONS................................. 
          SECTION 1306.      REINSTATEMENT............................................ 
                                                                                       
ARTICLE FOURTEEN             REPAYMENT AT THE OPTION OF HOLDERS....................... 
                                                                                       
          SECTION 1401.      APPLICABILITY OF ARTICLE................................. 
          SECTION 1402.      REPAYMENT OF SECURITIES.................................. 
          SECTION 1403.      EXERCISE OF OPTION....................................... 
          SECTION 1404.      WHEN SECURITIES PRESENTED FOR                             
                             BECOME DUE AND PAYABLE RECEIPT........................... 
          SECTION 1405.      SECURITIES REPAID IN PART................................ 

</TABLE>
                                     -iv-


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