<PAGE>


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


                       GOVERNMENT SECURITIES EQUITY TRUST


                          TRUST INDENTURE AND AGREEMENT


                  for all series formed on or subsequent to the
                         effective date specified below


                                      Among


                       PRUDENTIAL SECURITIES INCORPORATED
                                                     As Depositor


                              THE BANK OF NEW YORK
                                                       As Trustee


                         KENNY S&P EVALUATION SERVICES,
                       A DIVISION OF J.J. KENNY CO., INC.
                                                     As Evaluator


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


                              Dated: July 18, 2000


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

<PAGE>


                          TRUST INDENTURE AND AGREEMENT
                       GOVERNMENT SECURITIES EQUITY TRUST

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----
<S>              <C>                                                                                       <C>
ARTICLE I             DEFINITIONS.............................................................................8

ARTICLE II            DEPOSIT OF SECURITIES; ACCEPTANCE OF TRUST; ISSUANCE OF UNITS;
                      FORM OF CERTIFICATES...................................................................11

   Section 2.01. Deposit of Securities.......................................................................11
   Section 2.02. Acceptance of Trust.........................................................................12
   Section 2.03. Issue of Units..............................................................................12
   Section 2.04. Form of Certificates........................................................................12
   Section 2.05. Deposit of Additional Securities............................................................12
   Section 2.06. Register of Units...........................................................................14

ARTICLE III           ADMINISTRATION OF TRUST................................................................14

   Section 3.01. Initial Costs...............................................................................14
   Section 3.02. Income Account..............................................................................15
   Section 3.03. Principal Account...........................................................................15
   Section 3.04. Reserve Account.............................................................................16
   Section 3.05. Distribution................................................................................16
   Section 3.06. Distribution Statements.....................................................................19
   Section 3.07. Replacement Securities......................................................................20
   Section 3.08. Sale of Securities..........................................................................21
   Section 3.09. Notice and Sale by Trustee..................................................................22
   Section 3.10. Notice to Depositor.........................................................................22
   Section 3.11. Trustee Not to Amortize.....................................................................23
   Section 3.12. Deferred Sales Charge.......................................................................23

ARTICLE IV            EVALUATION OF SECURITIES; EVALUATOR....................................................24

   Section 4.01. Evaluation by Evaluator.....................................................................24
   Section 4.02. Tax Reports.................................................................................24
   Section 4.03. Evaluator's Compensation....................................................................24
   Section 4.04. Liability of Evaluator......................................................................24
   Section 4.05. Successor Evaluator.........................................................................25
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----
<S>              <C>                                                                                       <C>
ARTICLE V             TRUST EVALUATION; REDEMPTION, PURCHASE, TRANSFER, INTERCHANGE OR
                      REPLACEMENT OF CERTIFICATES............................................................26

   Section 5.01. Trust Evaluation............................................................................26
   Section 5.02. Redemptions by Trustee; Purchases by Depositor..............................................27
   Section 5.03. Transfer or Interchange of Certificates.....................................................28
   Section 5.04. Certificates Mutilated, Destroyed, Stolen or Lost:..........................................29

ARTICLE VI            TRUSTEE................................................................................30

   Section 6.01. General Definition of Trustee's Liabilities, Rights and Duties..............................30
   Section 6.02. Books, Records and Reports..................................................................33
   Section 6.03. Indenture and List of Securities on File....................................................33
   Section 6.04. Compensation................................................................................33
   Section 6.05. Removal and Resignation of Trustee; Successor...............................................35
   Section 6.06. Qualifications of Trustee...................................................................36

ARTICLE VII           RIGHTS OF UNIT HOLDERS.................................................................37

   Section 7.01. Beneficiaries of Trust......................................................................37
   Section 7.02. Rights, Terms and Conditions................................................................37

ARTICLE VIII          DEPOSITOR..............................................................................38

   Section 8.01. Liabilities; Power of Attorney..............................................................38
   Section 8.02. Discharge...................................................................................38
   Section 8.03. Successors..................................................................................39
   Section 8.04. Resignation.................................................................................39
   Section 8.05. Additional Depositors.......................................................................40
   Section 8.06. Exclusions from Liability...................................................................40

ARTICLE IX            ADDITIONAL COVENANTS; MISCELLANEOUS PROVISIONS.........................................41

   Section 9.01. Amendments..................................................................................41
   Section 9.02. Notice of Amendment.........................................................................41
   Section 9.03. Termination.................................................................................42
   Section 9.04. Construction................................................................................44
   Section 9.05. Registration of Units.......................................................................44
</TABLE>


                                      -ii-
<PAGE>

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----
<S>              <C>                                                                                       <C>
   Section 9.06. Written Notice..............................................................................44
   Section 9.07. Severability................................................................................45
   Section 9.08. Dissolution of Depositors Not to Terminate..................................................45
   Section 9.09. Name........................................................................................45

   EXECUTION.................................................................................................46
   ACKNOWLEDGMENTS...........................................................................................48
</TABLE>

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

This Table of Contents does not constitute part of the Indenture.






                                     -iii-
<PAGE>


                  TRUST INDENTURE AND AGREEMENT dated July 18, 2000 among
PRUDENTIAL SECURITIES INCORPROATED as Depositor, The Bank of New York as
Trustee, and Kenny S&P Evaluation Services, a division of J.J. Kenny Co., Inc.
as Evaluator.

                  WITNESSETH that:

                  WHEREAS, Prudential Securities Incorporated, the Trustee and
the Evaluator are entering into this Trust Indenture and Agreement for the
purpose of establishing certain of the terms, covenants and conditions of the
Government Securities Equity Trust Series 10, and each subsequent Series which
may be established from time to time hereafter, incorporating by reference the
terms hereof; and

                  WHEREAS, for the Government Securities Equity Trust Series 10,
and each subsequent Series of the Government Securities Equity Trust, to which
this Trust Indenture and Agreement is applicable, the Depositor, the Trustee,
and the Evaluator shall execute a separate Reference Trust Agreement
incorporating by reference this Trust Indenture and Agreement and effecting any
amendment, supplement or variation from or to such incorporation by reference
with respect to the related series, and specifying for that series: (i) the
United States Treasury obligations and Fund Shares deposited in trust and the
number of Units delivered by the Trustee in exchange for the United States
Treasury Obligations and Fund Shares pursuant to Section 2.03; (ii) the initial
fractional undivided interest represented by each Unit in each Trust; (iii) the
first Settlement Date; (iv) the first Quarterly Computation Date; (v) the first
Quarterly Distribution Date; (vi) the first Quarterly Record Date; (vii) the
name of the Depositor; and (viii) any other change or addition contemplated or
permitted by this Trust Indenture and Agreement; (ix) if units are
uncertificated or certificated; and

                  WHEREAS, the Depositor will acquire and, concurrently with the
execution and delivery of the appropriate Reference Trust Agreement, will
deposit in trust with the Trustee the United States Treasury Obligations and
Fund Shares to be listed in the Schedules thereto, all to be held by the Trustee
in trust upon the terms and conditions hereinafter set forth as amended,
supplemented or varied by such Reference Trust Agreement, for the use and
benefit of all registered holders of units of fractional undivided interest in
the Trust to which such Reference Trust Agreement relates; and

                  WHEREAS, concurrently with the receipt of the aforesaid
deposit, the Trustee will record on its books the ownership by the Depositor
thereof of units of fractional undivided interest in such Securities and in the
Income Account and the Principal Account maintained under this Indenture in the
manner hereinafter provided (which units of fractional undivided interest so
recorded respectively will represent in the aggregate 100% of the beneficial
interest established hereby in such Securities, Income Account and Principal
Account) and, if the Depositor directs that the units be represented by
certificates, will execute in the name of the Depositor thereof certificates
representing the ownership of the aggregate number of Units speci-

<PAGE>

                                      -2-


fied in such Reference Trust Agreement (hereinafter called the "Certificates")
and, if the Depositor directs that the units will be uncertificated, the Trustee
will execute in the name of the Depositor a receipt for the aggregate number of
units specified in such Reference Trust Agreement and deliver same to such
Depositor; and

                  WHEREAS, the form of the Certificates shall be substantially
as follows:

<PAGE>

                                      -3-


No. ______                                                        ________ Units


                            CERTIFICATE OF OWNERSHIP

                                 --evidencing--

                              An Undivided Interest

                                   --in the--

                       GOVERNMENT SECURITIES EQUITY TRUST

                                     SERIES

                                                                       CUSIP

                                                                   [___________]
                                                                   [___________]

                  This is to certify that _______ is the owner and registered
holder of this Certificate evidencing the ownership of      Unit(s) of undivided
interest in the Series of the Government Securities Equity Trust that is
specified on the face hereof (hereinafter called the "Trust"). The Trust was
created by the Trust Indenture and Agreement applicable to this Series of the
Government Securities Equity Trust, as amended, supplemented or varied by the
Reference Trust Agreement applicable to this Series of the Government Securities
Equity Trust (such Trust Indenture and Agreement as amended, supplemented or
varied by such Reference Trust Agreement being hereinafter called the
"Indenture"), among PRUDENTIAL SECURITIES INCORPORATED (hereinafter called the
"Depositor"), The Bank of New York (hereinafter called the "Trustee") and Kenny
S&P Evaluation Services, a division of J.J. Kenny Co., Inc. (hereinafter called
the "Evaluator"). The Trust consists of (1) such of the United States Treasury
Obligations (hereinafter called the "Treasury Obligations") and mutual fund
shares (hereinafter called the "Fund Shares") listed in the Schedule of the
Reference Trust Agreement relating to the Trust, and contracts for the purchase
of such securities and certified checks, cash or an irrevocable letter of credit
issued by a commercial bank, or a combination thereof in the amount required for
such purpose (collectively referred to as the "Securities") and such of the
Additional Securities that may be deposited in the Trust, and any other
securities that may be deposited in the Trust as Replacement Securities, as may
from time to time continue to be held as part of the Trust and (2) such cash
amounts as from time to time may be held in the Income Account and the Principal
Account for the Trust maintained under the Indenture in the manner described in
this Certificate.

<PAGE>

                                      -4-


                  At any given time this Certificate shall represent a
fractional undivided interest in the Trust, the numerator of which fraction
shall be the number of Units set forth on the face hereof and the denominator of
which shall be the sum of the total of all Units of the Trust which are
outstanding at such time.

                  The Depositor hereby grants and conveys all of its right,
title and interest in and to the Trust to the extent of the fractional undivided
interest represented hereby to the registered holder of this Certificate subject
to and in pursuance of the Indenture, all the terms, conditions and covenants of
which are incorporated herein as if fully set forth at length.

                  The registered holder of this Certificate is entitled at any
time upon tender of this Certificate to the Trustee at its corporate trust
office in the City of New York, and upon payment of any tax or other
governmental charges, to receive, on the third business day following the day on
which such tender is made, an amount in cash equal to the evaluation of the
fractional undivided interest in the Trust evidenced by this Certificate, upon
the basis provided for in the Indenture. The right of redemption may be
suspended and the date of payment may be postponed for any period during which
the New York Stock Exchange is closed or trading on that Exchange is restricted,
for any period during which an emergency exists so that disposal of the
Securities held in the Trust is not reasonably practicable or it is not
reasonably practicable to determine fairly the value of such Securities, or for
such other periods as the Securities and Exchange Commission may by order
permit.

                  Dividend income and l2b-1 fee rebate amounts received by the
Trustee as part of the Trust shall be credited by the Trustee to the Income
Account of the Trust. The fractional undivided interest represented by this
Certificate in the balance in the Income Account of the Trust (after the
deductions referred to below) shall be computed as of the Quarterly Computation
Date and paid on or shortly after the Quarterly Distribution Date to Unit
Holders of record on the Quarterly Record Date immediately preceding the
Quarterly Distribution Date. The next computation shall be made as of the next
succeeding Quarterly Computation Date, and thereafter as of each succeeding
Quarterly Computation Date.

                  All monies (other than dividend income and 12b-1 fee rebate
amounts) received by the Trustee as part of the Trust (including amounts
received from the sale, liquidation, redemption or maturity of any Securities
held in the Trust) shall be credited by the Trustee to a separate Principal
Account. The fractional undivided interest represented by this Certificate in
the cash balance in the Principal Account of the Trust (after the deductions
referred to below) shall be computed quarterly as of the Quarterly Computation
Date. An amount in cash equal to the sum of said fractional undivided interest
in the Income and Principal Accounts, shall be distributed on the Quarterly
Distribution Date or within a reasonable period of time thereafter, to Unit
Holders of record on the Quarterly Record Date immediately preceding the
Quarterly Distribution Date. Notwithstanding the foregoing, the Trustee shall
not be required to make a

<PAGE>

                                      -5-


distribution unless the aggregate cash balance available for distribution in the
Income and Principal Accounts is at least the minimum amount specified in the
Prospectus. However, not less than once per year, on a Quarterly Distribution
Date, the Trustee shall distribute the entire cash balance in the Income and
Principal Accounts available for distribution unless the Trustee receives the
agreement of the Depositor to forego a distribution.

                  From time to time deductions shall be made from the Income
Account and Principal Account, as more fully set forth in the Indenture, for
redemptions of Units, compensation of the Trustee and Evaluator, reimbursement
of certain expenses incurred by or on behalf of the Trust, certain legal
expenses and payment of, or the establishment of a reserve for, applicable
taxes, if any.

                  Within a reasonable period of time after the end of each
calendar year, but not later than the time required by any applicable law, the
Trustee shall furnish to the registered holder of this Certificate a statement
setting forth, among other things, the amounts received and deductions therefrom
and the amounts distributed during the preceding year in respect of dividend
income, capital gain, and sales, redemptions, liquidation, or maturities of
Securities held in the Trust.

                  This Certificate shall be transferable by the registered
holder hereof by presentation and surrender hereof at the corporate trust office
of the Trustee properly endorsed or accompanied by a written instrument or
instruments of transfer in form satisfactory to the Trustee and executed by the
registered holder hereof or his authorized attorney. Certificates of the Trust
are interchangeable for one or more Certificates in an equal aggregate number of
units of undivided interest in the Trust at the corporate trust office of the
Trustee, in denominations of a single unit of undivided interest or any multiple
thereof.

                  The holder hereof may be required to pay a charge of $2.00 per
Certificate issued in connection with the transfer or interchange of this
Certificate and will be required to pay any tax or other governmental charge
that may be imposed in connection with the transfer, interchange or other
surrender of this Certificate.

                  The holder of this Certificate, by virtue of the acceptance
hereof, assents to and shall be bound by the terms of the Indenture, a copy of
which is on file and available for inspection at the corporate trust office of
the Trustee, to which reference is made for all the terms, conditions and
covenants thereof.

                  The Trustee may deem and treat the person in whose name this
Certificate is registered upon the books of the Trustee as the owner hereof for
all purposes and the Trustee shall not be affected by any notice to the
contrary.


<PAGE>

                                      -6-


                  The Trust shall terminate upon the maturity, redemption, sale
or other disposition of the last Security held therein, provided, however, that
in no event shall the Indenture and the Trust continue beyond the date set forth
in Part II of the Reference Trust Agreement. The Indenture also provides that
the Trust may be terminated at any time by the written consent of the holders of
51% of the units of undivided interest in the Trust and under certain
circumstances which include a decrease in the aggregate value of the Trust
assets to less than 40% of the maturity amounts of the Treasury Obligations
calculated after the most recent deposit of the Treasury Obligations in the
Trust. Upon any termination, the Trustee shall fully liquidate the Securities
then held, if any (unless the Unit Holder notifies the Trustee, in writing, of
an election to receive Fund Shares in-kind, in which event the Trustee shall
distribute to the Unit Holder such amount of Fund Shares in-kind), and
distribute pro rata the cash and property then held in the Trust upon surrender
of the Certificates, all in the manner provided in the Indenture. Upon
termination, the Trustee shall be under no further obligation with respect to
the Trust, except to hold the funds in trust without interest until distribution
as aforesaid and shall have no duty upon any such termination to communicate
with the holder hereof other than by mail at the address of such holder
appearing in the registration books of the Trustee.

                  This Certificate shall not become valid or binding for any
purpose until properly executed by the Trustee under the Indenture.

                  IN WITNESS WHEREOF, Prudential Securities Incorporated has
caused this Certificate to be executed in facsimile by an authorized officer;
and The Bank of New York, as Trustee, has caused this Certificate to be executed
in its corporate name by an authorized officer.

Dated:


                                     PRUDENTIAL SECURITIES INCORPORATED,
                                     DEPOSITOR

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


                                     THE BANK OF NEW YORK, TRUSTEE

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


<PAGE>

                                      -7-


                  The following abbreviations, when used in the inscription on
the face of this certificate, shall be construed as though they were written out
in full according to applicable laws or regulations:

<TABLE>
<S>           <C>                                <C>
TEN COM       as tenants in common               UNIF GIFT MIN ACT _______ Custodian _______
                                                                   (Cust)            (Minor)
TEN ENT       as tenants by the                       under Uniform Gifts to Minors
              entireties

JT TEN        as joint tenants with right           Act_____________________________________
              of survivorship and not as                              (State)
              tenants in common

                   Additional abbreviations may also be used though not
                   in the above list.
</TABLE>

                                   ASSIGNMENT

For Value Received _____________________________________________________________

Please insert Social Security or Other
         Identifying Number of Assignee
[                              ]
hereby sells, assigns and transfers unto________________________________________
________________________________________________________________________________
the within Certificate and does hereby irrevocably constitute and appoint ______
___________________________________________________________________ attorney, to
transfer the within Certificate on the books of the Trustee, with full power of
substitution in the premises.
Dated:

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

                                   The signature(s) to this assignment must
                                   correspond with the name(s) as written upon
                                   the face of the certificate without
                                   alteration or enlargement or any change
                                   whatever.

                                   Signature guarantee should be made by the
                                   Depositor, a member of the New York,
                                   American, Midwest or Pacific Stock Exchange,
                                   or by a commercial bank or trust com-

<PAGE>

                                      -8-


                                   pany having its principal office or
                                   correspondent in the City of New York.

                                   Signature Guarantee


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


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



                  NOW, THEREFORE, in consideration of the premises and of the
mutual agreements herein contained, the Depositor, the Trustee and the Evaluator
agree as follows:


                                    ARTICLE I

                                   DEFINITIONS

                  Section 1.01.   Whenever used in this Indenture the following
words and phrases, unless the context clearly indicates otherwise, shall have
the following meanings:

                    (1) "Additional Securities" shall mean such Securities (as
         defined herein) as are listed in Supplementary Schedules of the
         Reference Trust Agreement and which have been deposited to effect an
         increase over the number of Units initially specified in Part II of the
         Reference Trust Agreement.

                    (2) "Additional Units" shall mean such Units (as defined
         herein) as are issued in respect of Additional Securities.

                    (3) "Basic Agreement" shall mean this Trust Indenture and
         Agreement dated as indicated on the cover page hereof as originally
         executed, or if amended as hereinafter provided, as so amended,
         exclusive of the terms contained in any related Reference Trust
         Agreement.

                    (4) "Business day" shall mean any day other than a Saturday
         or Sunday or, in the City of New York, a legal holiday, or a day on
         which banking institutions are authorized by law to close.

                    (5) "Certificate" shall mean any one of the certificates
         executed by the Trustee and the Depositor evidencing ownership of an
         undivided fractional interest in the Trust, if the Units are
         certificated as provided in the Reference Trust Agremeement for a
         Trust.


<PAGE>

                                      -9-


                    (6) "Contract Securities" shall mean Securities which are to
         be acquired by the Trust pursuant to contracts which have been assigned
         to the Trustee, including (i) Securities listed in the Schedule to the
         Reference Trust Agreement and Supplementary Schedules thereto, (ii)
         Securities listed in Schedules of Supplemental Reference Trust
         Agreements and (iii) Securities which the Depositor has contracted to
         purchase for the Trust pursuant to Section 3.07.

                    (7) "Deferred Sales Charge" shall mean any deferred sales
         charge payable in accordance with the provisions of Section 3.12
         hereof, as set forth in the prospectus for a Trust.

                    (8) "Depositor" of the Trust shall have the meaning assigned
         to it in Part II of the Reference Trust Agreement.

                    (9) "Evaluation Time" shall mean as of the close of regular
         trading on the New York Stock Exchange (ordinarily 4:00 p.m. New York
         time) or such other time set forth in the Prospectus for a Trust.

                   (10) "Evaluator" shall mean J.J. Kenny Co., Inc. or any
         corporation into which such firm may be merged or with which it may be
         consolidated, or any corporation resulting from any merger or
         consolidation to which such firm shall be a party, or any firm
         succeeding to all or substantially all of the business of such firm; or
         any successor evaluator as hereinafter provided for.

                   (11) "Fund" shall mean the mutual fund set forth in Part II
         of the Reference Trust Agreement.

                   (12) "Fund Shares" shall mean shares of the Fund set forth in
         Part II of the Reference Trust Agreement relating to such Trust or
         contracts and funds for the purchase thereof.

                   (13) "Indenture" shall mean the Basic Agreement, as further
         amended, supplemented or varied by the Reference Trust Agreement.

                   (14) "Quarterly Computation Date" of a Trust shall have the
         meaning assigned to it in Part II of the Reference Trust Agreement
         relating to such Trust.

                   (15) "Quarterly Distribution Date" of a Trust shall have the
         meaning assigned to it in Part II of the Reference Trust Agreement
         relating to such Trust.

                   (16) "Quarterly Record Date" of a Trust shall have the
         meaning assigned to it in Part II of the Reference Trust Agreement
         relating to such Trust.


<PAGE>

                                      -10-


                   (17) "Reference Trust Agreement" shall mean a supplement to
         the Basic Agreement, the purpose of which shall be to amend, supplement
         and/or vary certain of the terms contained in the Basic Agreement. Each
         Reference Trust Agreement together with the Basic Agreement to the
         extent that such Reference Trust Agreement incorporates it by
         reference, defines all the terms, rights and duties relevant to the
         series of the Government Securities Equity Trust, to which such
         Reference Trust Agreement relates.

                   (18) "Supplemental Reference Trust Agreement" shall mean a
         document pursuant to which Additional Securities are deposited or
         acquired in connection with an increase in the number of Units
         initially specified in a Reference Trust Agreement.

                   (19) "Replacement Treasury Obligation" shall mean a Treasury
         Obligation purchased by the Trustee pursuant to Section 3.07 hereof.

                   (20) "Securities" shall mean both the Fund Shares and the
         United States Treasury Obligations held in trust and listed on a
         schedule attached to the Reference Trust Agreement and on any
         supplemental schedule thereto, including contracts for the purchase of
         such securities, and certified checks, cash or an irrevocable letter of
         credit issued by a commercial bank, or a combination thereof in the
         amount required for such purpose.

                   (21) "Trust" shall mean the trust created by this Indenture,
         which trust shall be denominated as indicated in Part II of the
         Reference Trust Agreement relating to such trust and which shall
         consist of the Securities held pursuant and subject to this Indenture
         together with all undistributed dividend income or other amounts
         received or accrued thereon, and any undistributed net capital gains
         and proceeds realized from the disposition of Securities.

                   (22) "Trustee" shall mean The Bank of New York, or any
         successor trustee as hereinafter provided for.

                   (23) "Unit" shall represent a fractional undivided interest
         in and ownership of the Trust initially equal to the fraction specified
         for the Trust in Part II of the Reference Trust Agreement relating to
         the Trust. From time to time, the denominator of each of these
         fractions shall be decreased by the number of any such Units redeemed
         as provided in Section 5.02 hereof and increased by the number of any
         Additional Units created pursuant to Section 2.05 hereof.

                   (24) "Unit Holder" shall mean the registered holder of any
         unit as recorded on the books of the Trustee, his legal representatives
         and heirs and the successors of any other legal entity which is a
         registered holder of any unit and as such shall be

<PAGE>

                                      -11-


         deemed a beneficiary of the Trust created by this Indenture to the
         extent of his pro rata share thereof.

                   (25) "United States Treasury Obligations" ("Treasury
         Obligation(s)") shall mean debt obligations of the government of the
         United States or agencies thereof or obligations of an entity the
         payment of which is guaranteed by the full faith and credit of the
         United States, which have been stripped of their unmatured interest
         coupons or such coupons or receipts or certificates evidencing such
         obligations or coupons or contracts and funds for the purchase thereof.
         The obligor or guarantor of each obligation is the U.S. Government.
         Such obligations may include certificates that represent ownership of
         the payments that comprise a U.S. government bond.

                   (26) Words importing the singular number shall include the
         plural number in each case and vice versa, and words importing persons
         shall include corporations, and associations, as well as natural
         persons.

                   (27) The words "herein," "hereby," "herewith," "hereof,"
         "hereinafter," "hereunder," "hereinabove," "hereafter," "heretofore"
         and similar words or phrases of reference and association shall refer
         to this indenture in its entirety.

                   (28) "12b-1 fee rebate" shall mean, where applicable, an
         amount of money received by the Trustee in respect of l2b-1 fees
         assessed on particular Fund Shares held by the Trust.


                                   ARTICLE II

                   DEPOSIT OF SECURITIES; ACCEPTANCE OF TRUST;
                     ISSUANCE OF UNITS; FORM OF CERTIFICATES

                  Section 2.01.   Deposit of Securities: The Depositor,
concurrently with the execution and delivery of the Reference Trust Agreement,
has deposited with the Trustee in trust the Securities listed in the Schedule or
Schedules attached to such Reference Trust Agreement in bearer form or duly
endorsed in blank or accompanied by all necessary instruments of assignment and
transfer in proper form to be held, administered and applied by the Trustee as
herein provided. The Depositor shall deliver the Securities listed on said
Schedule or Schedules to the Trustee which were not actually delivered
concurrently with the execution and delivery of the Reference Trust Agreement
within 90 days after said execution and delivery or, if Section 3.07 applies,
within such shorter period as is specified in Section 3.07.


<PAGE>

                                      -12-


                  Section 2.02.   Acceptance of Trust: The Trustee
hereby accepts the Trust created by this Indenture for the use and benefit of
the Unit Holders in the Trust, subject to the terms and conditions of this
Indenture.

                  Section 2.03.   Issue of Units: By executing the Reference
Trust Agreement, the Trustee will thereby acknowledge receipt of the deposit
relating to the Trust to which such Reference Trust Agreement relates, referred
to in Section 2.01, and simultaneously with the receipt of said deposit, will
either (a) record on its books for the account of the Depositor the aggregate
number of Units of the Trust issued in exchange therefor or (b) execute
Certificates substantially in the form above recited representing the ownership
of all Units of the Trust, as specified in Part II of the Reference Trust
Agreement and deliver same to the Depositor. The number of Units may be
increased through a split of the Units or decreased through a reverse split
thereof, as directed by the Depositor, which revised number of Units shall be
recorded by the Trustee on its books.

                  The Trusts created by this Indenture are separate and distinct
trusts for all purposes and the assets of one such trust may not be commingled
with the assets of any other nor shall the expenses of any such trust be charged
against the other. The Units or Certificates therefor representing the ownership
of a fractional undivided interest in one Trust shall not be exchangeable for
Units or certificates representing the ownership of an undivided fractional
interest in any other.

                  Section 2.04.    Form of Certificates: Each Certificate
referred to in Section 2.03 in the case of a Trust for which Certificates are
issued shall be in substantially the form hereinabove recited, numbered serially
for identification in fully registered form, transferable only on the books of
the Trustee as herein provided, executed manually by an authorized officer of
the Trustee and in facsimile by an authorized officer of the Depositor of the
Trust to which the Certificate relates, and dated the date of execution and
delivery by the Trustee.

                  Uncertificated Units: In the case of a Trust where Units will
be held in uncertificated form, all Units shall be held in uncertificated form,
unless and until the Depositor directs the Trustee to issue Certificates. The
Trustee may deem and treat the person in whose name any Unit is registered upon
the books of the Trustee as the owner thereof for all purposes.

                  Section 2.05.   Deposit of Additional Securities: From time to
time and in the discretion of the Depositor, the Depositor may make deposits of
Additional Securities duly endorsed in blank or accompanied by all necessary
instruments of assignment and transfer in proper form (or contracts to purchase
Additional Securities and cash or an irrevocable letter of credit in an amount
necessary to consummate the purchase of any Additional Securities pursuant to
such contracts ("Additional Contract Securities")) and/or cash (or a letter of
credit in lieu of cash) with instructions to the Trustee to purchase one or more
additional Securities


<PAGE>

                                      -13-


(which cash (or cash in an amount equal to the face amount of the letter of
credit), to the extent not used by the Trustee to purchase such Additional
Securities within the 90-day period following the first deposit of Securities in
the Trust, shall be distributed to Unit Holders on the Quarterly Distribution
Date next following such 90-day period or such earlier date as the Depositor and
the Trustee determine) and Cash (as defined below), if Cash is an asset of the
Trust immediately prior to the supplemental deposit, provided that each deposit
during the 90-day period following the first deposit of Securities in the Trust
shall replicate, to the extent practicable as hereinafter provided, the
Securities (including Contract Securities) and shall exactly replicate Cash
(other than Cash to be distributed solely to persons other than persons
receiving the distribution as holders of Additional Units created by the
deposit) held in the Trust immediately prior to each such deposit; and provided
further that each deposit of Additional Securities and Cash, if any, subsequent
to such 90-day period shall exactly replicate the Securities (including Contract
Securities) and Cash (other than Cash to be distributed solely to persons other
than persons receiving the distribution as holders of Additional Units created
by the deposit) held in the Trust immediately prior to each such deposit. For
purposes of this paragraph, Cash means cash on hand in the Trust and/or cash
receivable by the Trust as of the date of the supplemental deposit reduced by
payables and accrued expenses.

                  Accordingly, for a deposit subsequent to the 90-day period
following the first deposit of Securities:

                  1.   Any Additional Securities included in a deposit shall be
identical to Securities held in the Trust immediately prior to the deposit and
in amounts such that (i) the number of shares and maturity amount of Additional
Securities of a particular issue included in a deposit divided by (ii) the
aggregate of the number of shares and maturity amount of all Additional
Securities included in the deposit results in a fraction which is the same as
the fraction resulting from division of (iii) the aggregate number of shares and
maturity amount of the Securities of the same issue held in the Trust
immediately prior to the deposit divided by (iv) the aggregate number of shares
and maturity amount of all Securities held in the Trust immediately prior to the
deposit;

                  2.   Any deposit of Additional Securities shall be accompanied
by Cash in an amount bearing the same ratio to the aggregate number of shares of
all Additional Securities in the deposit as the Cash held in the Trust
immediately prior to the deposit bears to the aggregate number of shares of all
Securities held in the Trust immediately prior to the deposit, exclusive of Cash
held in the Trust and designated for distribution solely to persons other than
persons receiving the distribution as holders of Additional Units created by the
deposit; and for deposit during the 90-day period following the first deposit of
Securities in the Trust, the rules stated in subparagraphs (1) and (2) of this
paragraph shall apply except that any Additional Securities (including
Additional Contract Securities) need be only substantially similar (rather than
identical) to Securities held in the Trust immediately prior to the deposit and
need meet

<PAGE>

                                      -14-


the proportionality requirements only to the extent practicable. Without
limiting the generality of the phrase "to the extent practicable," if the
Depositor specifies a minimum number of shares of a Security with respect to a
particular trust to be included in a deposit and such minimum requirement cannot
be met or if a Security identical to a Security held in the Trust is not readily
obtainable, substitution of other substantially similar Securities (including
Securities of an issue originally deposited) in order to meet the foregoing
proportionality requirements shall be considered as a meeting of such
requirements "to the extent practicable."

                  Each deposit of Additional Securities shall be listed in and
made in accordance with a Supplementary Schedule to the Reference Trust
Agreement stating the date of such deposit and the number of Additional Units
being issued therefor. The Trustee shall acknowledge in such Supplementary
Schedule receipt of the deposit, and simultaneously with the receipt of said
deposit, reflect the aggregate number of Additional Units specified in such
Supplementary Schedule by recording such Additional Units in its books and if
the Units are represented by Certificates by executing Certificates representing
the ownership of such Units and deliver same to the Depositor. The parties
hereto agree that a Supplementary Schedule to the Reference Trust Agreement may
be delivered by telecopier or in another format that may be read and that such
delivery shall have the same force and effect as the delivery of an original
executed document. Such Additional Securities shall be held, administered and
applied by the Trustee in the same manner as herein provided for the Securities.
The execution by the Depositor in connection with the deposit of Additional
Securities of a Supplementary Schedule to the Reference Trust Agreement shall
constitute the approval by the Depositor as satisfactory in form and substance
of the contracts to be entered into or assumed by the Trustee with regard to any
Additional Securities listed on such Supplementary Schedule and authorization to
the Trustee on behalf of the Trust to enter into or assume such contracts and
otherwise to carry out the terms and provisions thereof or to take other
appropriate action in order to complete the deposit of the Additional Securities
covered thereby into the Trust.

                  Section 2.06.   Register of Units: A register shall be kept by
the Trustee containing the names and addresses of Unit Holders and the number of
Units owned by each Unit Holder, and in which all issues, exchanges, transfers
and cancellations of Units shall be recorded.


                                   ARTICLE III

                             ADMINISTRATION OF TRUST

                  Section 3.01.   Initial Costs: The costs of organizing the
Trust and sale of the Trust Units shall, to the extent of the expenses
reimbursable to the Depositor provided below, be borne by the Unit Holders,
provided, however, that, to the extent all of such costs are not

<PAGE>

                                      -15-


borne by Unit Holders, the amount of such costs not borne by Unit Holders shall
be borne by the Depositor and, provided further, however, that the liability on
the part of the Depositor under this Section 3.01 shall not include any fees,
costs or other expenses incurred in connection with the administration of the
Trust subsequent to the deposit referred to in Section 2.01. Upon notification
from the Depositor that the primary offering period is concluded, the Trustee
shall withdraw from the Account or Accounts specified in the Prospectus or, if
no Account is therein specified, from the Principal Account, and pay to the
Depositor the Depositor's reimbursable expenses of organizing the Trust and sale
of the Trust Units in an amount certified to the Trustee by the Depositor. If
the balance of the Principal Account is insufficient to make such withdrawal,
the Trustee shall, as directed by the Depositor, sell Securities identified by
the Depositor, or distribute to the Depositor Securities having a value, as
determined under Section 4.01 as of the date of distribution, sufficient for
such reimbursement. The reimbursement provided for in this section shall be for
the account of the Unit Holders of record at the conclusion of the primary
offering and shall not be reflected in the computation of Unit Value prior
thereto. As used herein, the Depositor's reimbursable expenses of organizing
Trust and sale of the Trust Units shall include cost of the initial preparation
and typesetting of the registration statement, prospectuses (preliminary
prospectuses), the indenture, and other documents relating to the Trust, Federal
and State blue sky registration fees, the cost of the initial valuation of the
portfolio and audit of the Trust, the initial fees and expenses of the Trustee,
and legal and other out-of-pocket expenses related thereto, but not the expenses
incurred in the printing of preliminary prospectuses and prospectuses, expenses
incurred in preparation and printing of brochures and advertising materials and
any other selling expenses. Any cash which the Depositor has identified as to be
used for reimbursement of expenses pursuant to this Section 3.01shall be
reserved by the Trustee for such purpose and shall not be subject to
distribution or, unless the Depositor otherwise directs, used for payment of
redemptions in excess of the per-Unit amount allocable to Units tendered for
redemption. As directed by the Depositor, the Trustee will advance funds to the
Trust in an amount necessary to reimburse the Depositor pursuant to this Section
and recover such advance from the sale or sales Securities at such time as the
Depositor shall direct, but in no event later than the termination of the Trust.
Repayment of any such advance shall be secured by a lien on the assets of the
Trust prior to the interest of the Unit Holders as provided in Section 6.04.

                  Section 3.02.   Income Account: The Trustee shall collect the
cash dividend income on the Securities in the Trust as such are paid, and all
12b-1 fee rebate amounts, and credit such amounts to a separate account to be
known as the "Income Account."

                  Section 3.03.   Principal Account: The Securities in the Trust
and all monies, including capital gains paid on the Fund Shares, other than
amounts credited to the Income Account for the Trust, received by the Trustee in
respect of the Securities in the Trust shall be


<PAGE>

                                      -16-


credited to a separate account for the Trust to be known as the "Principal
Account" for the Trust.

                  Section 3.04.   Reserve Account: (a) From time to time the
Trustee shall withdraw from the Principal Account to the extent funds on deposit
in the Income Account are not sufficient such amounts as it, in its sole
discretion, shall deem requisite to establish a reserve for any applicable taxes
or other governmental charges that may be payable out of the Trust. Such amounts
so withdrawn shall be credited to a separate account for the Trust which shall
be known as the "Reserve Account." The Trustee shall not be required to
distribute to the Unit Holders any of the amounts in the Reserve Account;
provided, however, that if it shall, in its sole discretion, determine that such
amounts are no longer necessary for payment of any applicable taxes or other
governmental charges, then it shall promptly deposit such amounts in the account
from which it was withdrawn or, if such Trust has been terminated or is in the
process of termination, the Trustee shall distribute to each Unit Holder thereof
such holder's interest in the Reserve Account of such Trust in accordance with
Section 9.03.

                  (b) The Trustee also shall be entitled from time to time to
withdraw from the cash on deposit in the Principal Account such amounts as it
and the Depositor shall jointly deem necessary to establish a reserve for any
applicable expenses that may be or become payable out of the Trust. Such amounts
so withdrawn shall be credited to a separate account which shall be known as the
"Reserve Expense Account." The Trustee shall not be required to distribute to
the Unit Holders any of the amounts in the Reserve Expense Account; provided,
however, that if it shall, in its sole discretion, determine that such amounts
are no longer necessary to reserve for payment of any applicable expenses, then
it shall promptly deposit such amounts in the account from which withdrawn or if
the Trust shall have terminated or shall be in the process of termination, the
Trustee shall distribute the same in accordance with Section 9.03 to each Unit
Holder according to such Unit Holder's interest in the Reserve Expense Account.

                  Section 3.05.   Distribution: As of each Quarterly Computation
Date for the Trust, the Trustee shall:

                  (a) deduct from the Income Account, or, to the extent funds
         are not available in such Income Account, from the Principal Account
         and pay to itself individually the amounts that it is at the time
         entitled to receive on account of its services theretofore performed
         and its expenses, losses and liabilities theretofore incurred pursuant
         to Section 6.04;

                  (b) deduct from the Income Account, or, to the extent funds
         are not available in such Income Account, from the Principal Account
         and pay to the Evaluator the amount that it is at the time entitled to
         receive pursuant to Section 4.03; and


<PAGE>

                                      -17-


                  (c) deduct from the Income Account, or, to the extent funds
         are not available in such Income Account, from the Principal Account,
         an amount equal to the unpaid fees and expenses, if any, including
         registration charges, Blue Sky fees, printing costs, attorneys' fees,
         auditing costs and other miscellaneous out-of-pocket expenses, as
         certified by the Depositor, incurred in keeping the registration of the
         Units and the Trust on a current basis pursuant to Section 9.05. If the
         cash dividend, 12b-1 fee rebate and capital gains distributions to the
         Trust are insufficient to provide for amounts payable pursuant to
         paragraphs (a), (b), and (c) of this Section 3.05, the Trustee is
         hereby authorized to sell Fund Shares (not Treasury Obligations) to pay
         such amounts.

                  On each Quarterly Distribution Date or within a reasonable
period of time thereafter, the Trustee shall provide such of the following
distribution elections as the Depositor directs: (1) distributions by mail to
each Unit Holder of record at the close of business on the immediately preceding
Quarterly Record Date at his post office address as shown on the books of the
Trustee of such Unit Holder's pro rata share of the balance of the Income
Account, computed as of the preceding Quarterly Computation Date for the Trust,
plus such Unit Holder's pro rata share of the distributable cash balance of the
Principal Account of the Trust, computed as of the preceding Quarterly Record
Date for the Trust, except as reduced by (x) any amounts deducted pursuant to
Paragraphs (a), (b) and (c) of this Section 3.05 and (y) any amounts needed to
redeem Units pursuant to Section 5.02 hereof, (2) investment of the amount
otherwise distributable pursuant to election (1) above in Fund Shares or Units,
or (3) distributions to be made to the designated agent for any other investment
program, when, as and if, available to the Unit Holder through the Depositor. If
no election is offered by the Depositor or if no election is specified by the
Unit Holder at the time of purchase of any Unit, distributions, if any, shall be
made by mail to the Unit Holder as provided in (1) above. Once a distribution
election has been chosen by the Unit Holder, such election shall remain in
effect until changed by the Unit Holder. Such change of election may be made by
notification thereof to the Trustee. A transferee of any Unit may make his
distribution election in the manner as set forth above. The Trustee shall be
entitled to receive in writing a notification from the Unit Holder as to his or
her change of address. Notwithstanding the foregoing, the Trustee shall not be
required to make a distribution unless the aggregate cash balance available for
distribution in the Income and Principal Accounts is at least the amount
specified in the Prospectus for the Trust. As directed by the Depositor, not
less than once per year, on a Quarterly Distribution Date, or on an additional
date(s) following receipt by the Trustee of a November or December distribution
on the Fund Shares, the Trustee shall distribute to Unit Holders the entire cash
balance in the Income and Principal Accounts available for distribution.

                  If the Depositor fails to replace any failed Treasury
Obligation in accordance with Section 3.07, the Trustee shall distribute to all
Unit Holders the cost to the Trust attributable to such Treasury Obligation not
later than the next Quarterly Distribution Date and, to the

<PAGE>

                                      -18-


extent funds are provided by the Depositor, will at such time distribute on
behalf of the Depositor the sales charges attributable to such Treasury
Obligation.

                  If less than all monies attributable to a failed Treasury
Obligation have been applied by the Trustee to purchase Replacement Treasury
Obligations, the Trustee shall distribute the remaining monies to Unit Holders
not later than the next Quarterly Distribution Date.

                  All amounts (i) permitted to be withdrawn from the Principal
Account under this Indenture in order to satisfy obligations which, pursuant to
the terms hereof, are first to be paid out of the Income Account to the extent
funds are available, or (ii) permitted to be withdrawn from the Principal
Account pursuant to Section 5.02 hereof, may be made only from the balance in
the Principal Account after excluding capital amounts being held for
distribution to Unit Holders of record on the Record Date for a prior Quarterly
Distribution Date pursuant to the following paragraph. The Principal Account
shall be reimbursed for any such amounts described in clause (i) of the
preceding sentence when sufficient funds are next available in the Income
Account after giving effect to the payment from the Income Account of all
amounts otherwise required to be deducted therefrom at that time.

                  The amounts to be so distributed to each Unit Holder of the
Trust shall be the pro rata share of the cash balance of the Income and
Principal Accounts of the Trust, computed as set forth above, as shall be
represented by the Units registered in the name of such Unit Holder.

                  In the computation of each such share, fractions of less than
one cent shall be omitted. After any such distribution provided for above, any
cash balance remaining in the Income Account or the Principal Account of the
Trust shall be held in the same manner as other amounts subsequently deposited
in each of such Income or Principal Accounts, respectively.

                  For the purpose of distribution as herein provided, the
holders of record on the registration books of the Trustee at the close of
business on each Quarterly Record Date shall be conclusively entitled to such
distribution, and no liability shall attach to the Trustee by reason of payment
to any such registered Unit Holder of record. Nothing herein shall be construed
to prevent the payment of amounts from the Income Account and the Principal
Account of the Trust to individual Unit Holders by means of one check, draft or
other proper instrument, provided that the appropriate statement of such
distribution shall be furnished therewith as provided in Section 3.06 hereof.

                  On each Deferred Sales Charge payment date set forth in the
prospectus for a Trust, the Trustee shall pay the account created pursuant to
Section 3.15 the amount of the Deferred Sales Charge payable on each such date
as stated in the Prospectus for a Trust. Such amount shall be withdrawn from the
Principal Account and the Income Account from the amounts therein designated for
such purpose or otherwise deducted from such accounts.


<PAGE>

                                      -19-


                  Section 3.06.   Distribution Statements: With each
distribution, if any, from the Income or Principal Accounts of the Trust the
Trustee shall set forth, either in the instrument by means of which payment of
such distribution is made or in an accompanying statement, the amount being
distributed from each such account expressed as a dollar amount per Unit.

                  Within a reasonable period of time after the last business day
of each calendar year, but not later than required by law, the Trustee shall
furnish to each person who at any time during such calendar year was a Unit
Holder of the Trust a statement setting forth, with respect to such calendar
year:

                  (A)   as to the Income Account of the Trust:

                        (1)   the amount of dividends received on the Fund
                              Shares,

                        (2)   the deductions for payment of applicable taxes, or
                              other government charges, if any, compensation of
                              the Evaluator and fees and expenses of the
                              Trustee, and transfers to the Reserve Account, and
                              any expenses paid by the Trust pursuant to Section
                              3.05 hereof,

                        (3)   all l2b-1 fee rebate amounts and any Deferred
                              Sales Charge paid,

                        (4)   any other amount credited or deducted from the
                              Income Account, and

                        (5)   the balance remaining after such distributions and
                              deductions, expressed both as a total dollar
                              amount and as a dollar amount per Unit outstanding
                              on the last business day of such calendar year;

                  (B)   as to the Principal Account of the Trust:

                        (1)   the dates of the sale, maturity, liquidation or
                              redemption of any of the Securities, the identity
                              of such Securities and the net proceeds received
                              therefrom, excluding any portion thereof credited
                              to the Income Account,

                        (2)   the amount paid for purchases of Replacement
                              Treasury Obligations pursuant to Section 3.07, and
                              for redemptions pursuant to Section 5.02,
<PAGE>

                                      -20-


                        (3)   the deductions for payment of applicable taxes and
                              other governmental charges, if any, compensation
                              of the Evaluator and fees and expenses of the
                              Trustee, transfers to the Reserve Account and any
                              other expenses paid by the Trust under Section
                              3.05 hereof and any Deferred Sales Charge paid,

                        (4)   the amount credited to or deducted from the
                              Principal Account on account of distributions of
                              capital gains, if any, on Fund Shares, and

                        (5)   any other amount credited to or deducted from the
                              Principal Account, and

                        (6)   the balance remaining after such distributions and
                              deductions, expressed both as a total dollar
                              amount and as a dollar amount per Unit outstanding
                              on the last business day of such calendar year;
                              and

                  (C)   the following information:

                        (1)   a list of the Securities held in the Trust as of
                              the last business day of such calendar year,

                        (2)   the number of Units of such Trust outstanding on
                              the last business day of the calendar year,

                        (3)   the Unit Value (as defined in Section 5.01) based
                              on the last evaluation of such Trust made during
                              such calendar year, and

                        (4)   the amounts actually distributed during such
                              calendar year from the Income and Principal
                              Accounts of the Trust, separately stated,
                              expressed both as total dollar amounts and as
                              dollar amounts per Unit outstanding on the record
                              dates for such distributions.

                  Section 3.07. Replacement Securities: In the event that any
Contract Security is not delivered due to any occurrence, act or event beyond
the control of the Depositor and of the Trustee (such a Contract Security being
herein called a "Special Security"), the Depositor shall notify the Trustee in
writing of such failed contract and may instruct the Trustee to purchase
Replacement Securities which have been selected by the Depositor having a cost
not in excess of the cost of the Special Securities not so delivered. To be
eligible for inclusion in the Trust, the Replacement Securities which the
Depositor selects

<PAGE>

                                      -21-


must: (i) in the case of Treasury Obligations be substantially identical to
every Treasury Obligation then in the Trust; and (ii) be purchased within twenty
days after delivery of notice of the failed contract to the Trustee or to the
Depositor, whichever occurs first. Any Replacement Securities received by the
Trustee shall be deposited hereunder and shall be subject to the terms and
conditions of this Indenture to the same extent as other Securities deposited
hereunder. No such deposit of Replacement Securities shall be made after the
earlier of (i) 90 days after the date of execution and delivery of the
applicable Reference Trust Agreement or (ii) the first Quarterly Record Date to
occur after the date of execution and delivery of the applicable Reference Trust
Agreement.

                  Whenever a Replacement Security is acquired by the Depositor
pursuant to the provisions of this Section 3.07, the Trustee shall, within five
days thereafter, mail to all Unit Holders notices of such acquisition, including
an identification of the Special Security and the Replacement Security acquired.
The purchase price of a Replacement Security shall be paid out of the funds in
the Principal Account attributable to the Special Security which it replaces.
The Trustee shall not be liable or responsible in any way for depreciation or
loss incurred by reason of any purchase made pursuant to any such instructions
from the Depositor and in the absence of such instructions the Trustee shall
have no duty to purchase any Replacement Securities under this Indenture. The
Depositor shall not be liable for any failure to instruct the Trustee to
purchase any Replacement Security or for errors of judgment in selecting any
Replacement Security. The Trustee shall have no duty or responsibility with
respect to the selection of any Replacement Security.

                  Section 3.08. Sale of Securities: In order to maintain the
sound investment character of the Trust, the Depositor may by written notice
direct the Trustee to sell or liquidate Securities at such price and time and in
such manner as shall be determined by the Depositor, provided that the Depositor
has determined, with respect to the Securities to be sold, that any one or more
of the following conditions exist:

                  (a) that there has been a default by the issuer of the
         Securities in payment of declared dividends or redemption of Fund
         Shares;

                  (b) that any action or proceeding has been instituted in law
         or equity seeking to restrain or enjoin the payment under any such
         Securities, or attacking the validity of any of the Securities, or that
         there exists any other legal question or impediment affecting such
         Securities or the payment of dividends on the same;

                  (c) that there has been a default in the payment of principal
         or interest on any outstanding obligations of the issuer of any of the
         Securities;

                  (d) that there has been a decline in market price of any such
         Securities to such an extent, or such other market or credit factor
         exists, that in the opinion of the De-

<PAGE>

                                      -22-


         positor the retention of such Securities would be detrimental to the
         Trust and to the interests of the Unit Holders; and

                  (e) that the sale is required to provide funds for the payment
         to the Depositor of the Deferred Sales Charge then due as set forth in
         the Prospectus for the Trust. In order to pay the Deferred Sales
         Charge, the Trustee shall sell or liquidate such an amount of
         Securities at such time and from time to time and in such manner as the
         Depositor shall direct such that the proceeds of such sale or
         liquidation shall be sufficient to pay the amount required to be paid
         to the Depositor pursuant to the Deferred Sales Charge program as set
         forth in the Prospectus for a Trust.

                  Upon receipt of such direction from the Depositor, upon which
the Trustee shall rely, the Trustee shall proceed to sell the specified
Securities in accordance with such direction, and upon receipt of the proceeds
of any such sale, after deducting therefrom any fees and expenses of the
Trustee, any brokerage charges, taxes or other governmental charges, shall
deposit such proceeds in the Principal Account. The Trustee shall not be liable
or responsible in any way for depreciation or loss incurred by reason of any
sale made pursuant to any such direction or by reason of the failure of the
Depositor to give any such direction, and in the absence of such direction the
Trustee shall have no duty to sell any Securities under this Section 3.08.

                  Section 3.09.   Notice and Sale by Trustee: If at any time
there has been a failure to pay a declared dividend on the Fund Shares the
Trustee shall notify the Depositor thereof. If within thirty days after such
notification the Depositor has not given any written instruction to sell or to
hold or has not taken any other action in connection with such Fund Shares, the
Trustee shall sell such Fund Shares forthwith, and the Trustee shall not be
liable or responsible in any way for depreciation or loss incurred by reason of
such sale.

                  Section 3.10.   Notice to Depositor: In the event that the
Trustee shall have been notified at any time of any action to be taken or
proposed to be taken by holders of the Securities in a Trust (including but not
limited to the making of any demand, direction, request, giving of any notice,
consent or waiver or the voting with respect to any amendment or supplement to
any indenture, resolution, agreement or other instrument under or pursuant to
which the Securities have been issued) the Trustee shall promptly notify the
Depositor and shall thereupon take such action or refrain from taking any action
(not inconsistent with its duties as Trustee) as the Depositor shall in writing
direct; provided, however, that the Trustee shall vote the Fund Shares as
closely as possible, in the same manner, as the shares of such Fund held by
owners other than the Trust are voted; and provided, further however, that if
the Depositor shall not within five business days of the giving of such notice
to the Depositor direct the Trustee to take or refrain from taking any action,
the Trustee shall take such action

<PAGE>

                                      -23-


as it, in its sole discretion, shall deem advisable. Neither the Depositor nor
the Trustee shall be liable to any person for any action or failure to take
action with respect to this section.

                  Section 3.11.   Trustee Not to Amortize: Nothing in this
Indenture, or otherwise, shall be construed to require the Trustee to make any
adjustments between the Interest Account and the Principal Account of the Trust
by reason of any premium or discount in respect of any of the Securities except
as required by any applicable law or accounting practice.

                  Section 3.12.   Deferred Sales Charge. If the Reference Trust
Agreement and Prospectus for a Trust specifies a Deferred Sales Charge, the
Trustee shall, on the dates specified in and as permitted by the Prospectus,
withdraw from the Income Account or from the Principal Account, as directed by
the Depositor, an amount per Unit specified in the prospectus and credit such
amount to a special, non-Trust account maintained at the Trustee out of which
the Deferred Sales Charge will be distributed to the Depositor. If the balances
in the Income and Principal Accounts are insufficient to make any such
withdrawal, the Trustee shall, as directed by the Depositor, either advance
funds in an amount equal to the proposed withdrawal and be entitled to
reimbursement of such advance upon the deposit of additional monies in the
Income Account or the Principal Account, sell Securities and credit the proceeds
thereof to such special Depositor's Account or credit Securities in kind to such
special Depositor's Account. Such directions shall identify the Securities, if
any, to be sold or distributed in kind and shall contain, if the Trustee is
directed by the Depositor to sell a Security, instructions as to execution of
such sales. If a Unit Holder redeems Units prior to full payment of the Deferred
Sales Charge, the Trustee shall, if so provided in the Reference Trust Agreement
and Prospectus, on the Redemption Date, withhold from the Redemption Price
payment to such Unit Holder an amount equal to the unpaid portion of the
Deferred Sales Charge as such amount is certified by the Depositor to the
Trustee prior to the Redemption Date, upon which certification the Trustee shall
be entitled to rely, and distribute such amount to such special Depositor's
Account or, if the Depositor shall purchase such Unit pursuant to the terms of
Section 5.02 hereof, the Depositor shall pay the Redemption Price for such Unit
less the unpaid portion of the Deferred Sales Charge. The Depositor may at any
time instruct the Trustee to distribute to the Depositor cash or Securities
credited to the special Depositor's Account. References to Deferred Sales Charge
in this Trust Indenture and Agreement shall include any creation and development
fee indicated in the Prospectus for a Trust. The creation and development fee
shall be payable on each date so designated and in an amount determined as
specified in the Prospectus for a Trust.

<PAGE>

                                      -24-


                                   ARTICLE IV

                       EVALUATION OF SECURITIES; EVALUATOR

                  Section 4.01.   Evaluation by Evaluator: The Evaluator shall
determine separately and promptly furnish to the Trustee and the Depositor upon
request the per Unit value of the Securities in the Trust as of the Evaluation
Time on the bid side of the market on the days on which the Trustee shall make
the Trust Evaluation required by Section 5.01 and, in addition, (i) as of the
Evaluation Time on the offering side of the market each business day during the
initial public offering period, (ii) if and as long as requested by the
Depositor on the offering side of the market on each business day following such
initial public offering period, and (iii) on any other day requested by the
Depositor or the Trustee. In making the evaluations the Evaluator may determine
the value of each issue of the securities in the Trust by the following methods
or any combination thereof which it deems appropriate: (i) on the basis of
current bid or offering prices of such securities as obtained from investment
dealers or brokers (including the Depositor) who customarily deal in securities
comparable to those held by the Trust, or (ii) if bid or offering prices are not
available for any of such securities, on the basis of bid or offering prices for
comparable securities, or (iii) by appraisal or (iv) by any combination of the
above. The Evaluator shall also make a per Unit evaluation of the Securities
deposited in the Trust as of the times said Securities are deposited under this
Indenture. Such evaluation shall be made on the same basis as set forth above
and shall be based upon offering prices of said Securities. The Evaluator's
determination of the offering price of the Securities of the Trust on the date
of deposit shall be included in the Schedules attached to the Reference Trust
Agreement.

                  Section 4.02.   Tax Reports: For the purpose of aiding Unit
Holders to satisfy any reporting requirements of applicable Federal or state tax
law, the Evaluator shall make available to the Trustee and the Trustee shall
transmit to any Unit Holder upon written request of such Unit Holder any
determinations made by the Evaluator pursuant to Section 4.01.

                  Section 4.03.   Evaluator's Compensation: As compensation for
its services hereunder, the Evaluator, with respect to each series, shall
receive against a statement therefor submitted to the Trustee quarterly on or
before each Quarterly Distribution Date from the Income Account to the extent
funds are available and thereafter from the Principal Account the amount as set
forth in the Summary of Essential Information in the Prospectus for each
evaluation of the series, provided, however, that if at any time the fee of the
Trustee shall have been increased pursuant to Section 6.04, the compensation of
the Evaluator hereunder shall at the same time be ratably increased.

                  Section 4.04.   Liability of Evaluator: The Trustee, Depositor
and Unit Holders may rely on any evaluation furnished by the Evaluator and shall
have no responsibility

<PAGE>

                                      -25-


for the accuracy thereof. The determinations made by the Evaluator hereunder
shall be made in good faith upon the basis of the best information available to
it. The Evaluator shall be under no liability to the Trustee, the Depositor or
Unit Holders for errors in judgment; provided, however, that this provision
shall not protect the Evaluator against any liability to which it would
otherwise be subject by reason of willful misfeasance, bad faith or gross
negligence in the performance of its duties or by reason of its reckless
disregard of its obligations and duties hereunder.

                  Section 4.05.   Successor Evaluator: (a) The Evaluator may
resign and be discharged hereunder, by executing an instrument in writing
resigning as Evaluator and filing the same with the Depositor and the Trustee,
not less than 60 days before the date specified in such instrument when, subject
to Section 4.05(e), such resignation is to take effect. Upon receiving such
notice of resignation, the Depositor and the Trustee shall use their best
efforts to appoint a successor evaluator having qualifications and at a rate of
compensation satisfactory to the Depositor and the Trustee. Such appointment
shall be made by written instrument executed by the Depositor and the Trustee,
in duplicate, one copy of which shall be delivered to the resigning Evaluator
and one copy to the successor evaluator. The Depositor may remove the Evaluator
at any time upon 30 days' written notice and appoint a successor evaluator
having qualifications and at a rate of compensation satisfactory to the
Depositor. Such appointment shall be made by written instrument executed by the
Depositor, in duplicate, one copy of which shall be delivered by the Evaluator
so removed and one copy to the successor evaluator. Notice of such resignation
or removal and appointment of a successor evaluator shall be mailed by the
Trustee to each Unit Holder.

                  (b) Any successor evaluator appointed hereunder shall execute,
         acknowledge and deliver to the Depositor and the Trustee an instrument
         accepting such appointment hereunder, and such successor evaluator
         without any further act, deed or conveyance shall become vested with
         all the rights, powers, duties and obligations of its predecessor
         hereunder with like effect as if originally named Evaluator herein and
         shall be bound by all the terms and conditions of this Agreement.

                  (c) In case at any time the Evaluator shall resign and no
         successor evaluator shall have been appointed and have accepted
         appointment within 30 days after notice of resignation has been
         received by the Depositor and the Trustee, the Evaluator may forthwith
         apply to a court of competent jurisdiction for the appointment of a
         successor evaluator. Such court may thereupon, after such notice, if
         any, as it may deem proper and prescribe, appoint a successor
         evaluator.

                  (d) Any corporation into which the Evaluator hereunder may be
         merged or with which it may be consolidated, or any corporation
         resulting from any merger or consolidation to which the Evaluator
         hereunder shall be a party, or any corporation

<PAGE>

                                      -26-


         succeeding to all or substantially all of the business of the Evaluator
         hereunder, shall be the successor evaluator under this Agreement
         without the execution or filing of any paper, instrument or further act
         to be done on the part of the parties hereto, anything herein, or in
         any agreement relating to such merger or consolidation, by which the
         Evaluator may seek to retain certain powers, rights and privileges
         theretofore obtaining for any period of time following such merger or
         consolidation, to the contrary notwithstanding.

                  (e) Any resignation or removal of the Evaluator and
         appointment of a successor evaluator pursuant to this Section shall
         become effective upon acceptance of appointment by the successor
         evaluator as provided in subsection (b) hereof.


                                    ARTICLE V

                TRUST EVALUATION; REDEMPTION, PURCHASE, TRANSFER,
                   INTERCHANGE OR REPLACEMENT OF CERTIFICATES

                  Section 5.01.   Trust Evaluation: The Trustee shall make an
evaluation of the Trust as of the Evaluation Time, (i) on the last business day
of each of the months of June and December, (ii) on the day on which any Unit of
the Trust is tendered for redemption, and (iii) on any other day desired by the
Trustee or requested by the Depositor. Such evaluations shall take into account
and itemize separately (1) the cash on hand in the Trust (other than monies on
deposit in the Reserve Account, funds deposited on the date hereof by the
Depositor for the purchase of Securities and not theretofore credited to the
Principal Account pursuant to Section 3.03 and funds in the Principal Account
with respect to which contracts for the purchase of the Replacement Securities
have been entered into pursuant to Section 3.07), (2) the value of each Security
in the Trust on the bid side of the market as determined by the Evaluator
pursuant to Section 4.01, and (3) all other assets of the Trust. For each such
evaluation there shall be deducted from the sum of the above (i) amounts
representing any applicable taxes or governmental charges payable out of the
Trust and for which no deductions shall have previously been made for the
purpose of addition to the Reserve Account, (ii) amounts representing accrued
expenses of the Trust including but not limited to unpaid fees and expenses of
the Trustee and the Evaluator and expenses of the Trust (including legal and
auditing expenses), in each case as reported by the Trustee to the Evaluator on
or prior to the date of evaluation and (ii) cash held for distribution to Unit
Holders of record as of a date prior to the evaluation then being made. The
value of the pro rata share of each Unit of the Trust determined on the basis of
any such evaluation shall be referred to herein as the "Unit Value."

                  The Trustee shall promptly advise the Depositor of each
determination of Unit Value made by it as above provided, and, shall promptly
furnish to the Depositor such infor-

<PAGE>

                                      -27-


mation regarding the Principal, Income and Reserve Accounts as the Depositor may
reasonably request.

                  Section 5.02.   Redemptions by Trustee; Purchases by
Depositor: Any Unit tendered for redemption by a Unit Holder or his duly
authorized attorney to the Trustee at its corporate trust office in the City of
New York, shall be redeemed by the Trustee on the third business day following
the day on which tender for redemption is made (being herein called the
"Redemption Date"). Subject to payment by such Unit Holder of any tax or other
governmental charges which may be imposed thereon, redemption of such Unit is to
be made by payment on the Redemption Date of cash equivalent to the Unit Value,
determined by the Trustee as of the Evaluation Time on the date of tender
("Redemption Price"). Units received for redemption by the Trustee on any day
after the Evaluation Time will be held by the trustee until the next day on
which the New York Stock Exchange is open for trading and will be deemed to have
been tendered on such day for redemption at the Redemption Price computed on
that day. The Trustee, if so directed by the Depositor, may redeem Units in-kind
(in whole or in part) by transfer to the redeeming Unit Holder, no later than
the Redemption Date, of Securities (together with cash if such redemption is in
part in-kind) equal in value to the Unit Value.

                  The Trustee may in its discretion, and shall when so directed
by the Depositor, suspend the right of redemption for Units of the Trust or
postpone the date of payment of the Redemption Price therefor for more than
three business days following the day on which tender for redemption is made (1)
for any period during which the New York Stock Exchange is closed (other than
customary weekend and holiday closings) or during which trading on the New York
Stock Exchange is restricted; (2) for any period during which an emergency
exists, as a result of which disposal by the Trust of the Securities is not
reasonably practicable or it is not reasonably practicable to determine fairly
in accordance herewith the value of the Securities; or (3) for such other period
as the Securities and Exchange Commission may by order permit, and the Trustee
shall not be liable to any person or in any way for any loss or damage which may
result from any such suspension or postponement.

                  Not later than the close of business on the day of tender of a
Unit for redemption by a Unit Holder other than the Depositor, the Trustee shall
notify the Depositor of such tender or such mandatory redemption. Such Depositor
shall have the right to purchase such Unit by notifying the Trustee of its
election to make such purchase as soon as practicable thereafter but in no event
subsequent to the close of business on the second business day after the day on
which such Unit was tendered for redemption. Such purchase shall be made by
payment for such Unit by the Depositor to the Unit Holder not later than the
close of business on the Redemption Date of an amount not less than the
Redemption Price which would otherwise be payable by the Trustee to such Unit
Holder.


<PAGE>

                                      -28-


                  Any Unit so purchased by the Depositor may at the option of
the Depositor be tendered to the Trustee for redemption at the corporate trust
office of the Trustee in the manner provided in the first paragraph of this
Section 5.02.

                  If the Depositor does not elect to purchase any Unit of the
Trust tendered to the Trustee for redemption, or if a Unit is being tendered by
the Depositor for redemption, that portion of the Redemption Price which
represents income shall be withdrawn from the Income Account of the Trust to the
extent available. The balance paid on any redemption, including accrued and
unpaid interest, if any, shall be withdrawn from the Principal Account of the
Trust to the extent that funds are available for such purpose. If such available
balance shall be insufficient the Trustee shall sell or redeem such of the
Securities held in the Trust as are currently designated for such purposes by
the Depositor as the Trustee in its sole discretion shall deem necessary. The
Trustee shall sell, to the extent possible, Fund Shares and Treasury Obligations
in the same ratio as the ratio of Fund Shares and Treasury Obligations then held
in the Trust. To the extent the sale of Securities in such ratio is not in the
best interest of the Unit Holders, Fund Shares shall be sold prior to the sale
of Treasury Obligations. In the event that funds are withdrawn from the
Principal Account for payment of amounts representing income, the Principal
Account shall be reimbursed for such funds so withdrawn when sufficient funds
are next available in the Income Account.

                  The Depositor shall maintain with the Trustee a current list
of Securities held in the Trust designated to be sold for the purpose of
redemption of Units of the Trust, and for payment of expenses hereunder,
provided that if the Depositor shall for any reason fail to maintain such a
list, the Trustee, in its sole discretion, may designate a current list of
Securities for such purposes. The net proceeds of any sales of Securities from
such list representing principal shall be credited to the Principal Account of
the Trust.

                  The Trustee shall not be liable or responsible in any way for
depreciation or loss incurred by reason of any sale or redemptions of Securities
made pursuant to this Section 5.02.

                  Any Certificates evidencing Units redeemed pursuant to this
Section 5.02 shall be canceled by the Trustee, and any Unit or Units redeemed
pursuant to this Section 5.02 shall be terminated by such redemption.

                  Section 5.03.   Transfer or Interchange of Certificates: A
Certificate (and the Units it represents) may be transferred by the registered
holder thereof by presentation and surrender of such Certificate at the
corporate trust office of the Trustee properly endorsed or accompanied by a
written instrument or instruments of transfer in form satisfactory to the
Trustee and executed by the Unit Holder or his authorized attorney, whereupon a
new registered Certificate or Certificates for the same number of Units of the
Trust executed by the Trustee and the Depositor will be issued in exchange and
substitution therefor. Certificates issued pursuant to this Indenture are
interchangeable for one or more other Certificates in an

<PAGE>

                                      -29-


equal aggregate number of Units of the Trust and all Certificates issued shall
be issued in denominations of one unit or any integral multiple thereof or a
fraction thereof as may be requested by the Unit Holder.

                  If Units are uncertificated, Units may be transferred by the
registered holder thereof by presentation of transfer instructions, at the
corporate trust office of the Trustee properly endorsed or accompanied by a
written instrument or instruments of transfer in form satisfactory to the
Trustee and executed by the Unit Holder or his authorized attorney as the
Trustee deems necessary to evidence the authority of the person making the
transfer.

                  The Trustee may deem and treat the person in whose name any
Certificate or Unit shall be registered upon the books of the Trustee as the
owner of such Certificate or Unit for all purposes hereunder, and the Trustee
shall not be affected by any notice to the contrary, nor be liable to any person
or in any way for so deeming and treating the person in whose name any
Certificate or Unit shall be so registered.

                  A sum sufficient to pay any tax or other governmental charge
that may be imposed in connection with any such transfer or interchange shall be
paid by the Unit Holder to the Trustee. The Trustee may require a Unit Holder to
pay $2.00 for each new Certificate issued on any such transfer or interchange or
such other amount as may be specified by the Trustee and approved by the
Depositor.

                  All Certificates cancelled pursuant to this Indenture shall be
disposed of by the Trustee without liability on its part.

                  Section 5.04.   Certificates Mutilated, Destroyed, Stolen or
Lost: In case any Certificate shall become mutilated or be destroyed, stolen or
lost, the Trustee shall execute and deliver a new Certificate in exchange and
substitution therefor upon the Unit Holder's furnishing the Trustee with proper
identification and indemnity satisfactory to the Trustee, complying with such
other reasonable regulations and conditions as the Trustee may prescribe and
paying such expenses as the Trustee may incur. Any mutilated Certificate shall
be duly surrendered and cancelled before any new Certificate shall be issued in
exchange and substitution therefor. Upon the issuance of any new Certificate a
sum sufficient to pay any tax or other governmental charge will be imposed and
payment of the fees and expenses of the Trustee may be required. Any such new
Certificate issued pursuant to this Section shall constitute complete and
indefeasible evidence of ownership in the Trust, as if originally issued,
whether or not the lost, stolen or destroyed Certificate shall be found at any
time.

                  In the event the Trust has terminated or is in the process of
termination, the Trustee may, instead of issuing a new Certificate in exchange
and substitution for any Certificate which shall have become mutilated or shall
have been destroyed, stolen or lost, make the distributions in respect of each
mutilated, destroyed, stolen or lost Certificate (without surren-

<PAGE>

                                      -30-


der thereof except in the case of a mutilated Certificate) as provided in
Section 9.03 hereof if the Trustee is furnished with such security or indemnity
as it may require to save it harmless, and in the case of destruction, loss or
theft of a Certificate, evidence to the satisfaction of the Trustee of the
destruction, loss or theft of such Certificate and of the ownership thereof.


                                   ARTICLE VI

                                     TRUSTEE

                  Section 6.01.   General Definition of Trustee's Liabilities,
Rights and Duties: in addition to and notwithstanding the other duties, rights,
privileges and liabilities of the Trustee as elsewhere set forth herein, the
liabilities of the Trustee are further defined as follows:

                  (a) all monies deposited with or received by the Trustee
         hereunder shall be held by it without interest in trust as part of the
         Trust or the Reserve Account until required to be disbursed in
         accordance with the provisions of this Indenture and such moneys will
         be segregated by separate recordation on the trust ledger of the
         Trustee so long as such practice preserves a valid reference under
         applicable law, or if such preference is not so preserved the Trustee
         shall handle such moneys in such other manner as shall constitute the
         segregation and holding thereof in trust within the meaning of the
         Investment Company Act of 1940; as part of the Trustee's compensation
         the Trustee may benefit from reasonable cash balances in the Income and
         Principal Accounts, as provided in Section 6.04;

                  (b) the Trustee shall be under no liability for any action
         taken in good faith on any appraisal, paper, order, list, demand,
         request, consent, affidavit, notice, opinion, direction, evaluation,
         endorsement, assignment, resolution, draft or other document whether or
         not of the same kind prima facie properly executed, or for the
         disposition of monies, any of the Securities, Units or Certificates
         issued pursuant to this Indenture, or in respect of any evaluation
         which it is required to make or is required or permitted to have made
         by others under this Indenture or otherwise, except by reason of its
         own willful misfeasance, bad faith or negligence in the performance of
         its duties or by reason of its reckless disregard of its obligations
         and duties hereunder; provided, however, that the Trustee shall not in
         any event be liable or responsible for any of the provisions of this
         Indenture, insofar as the same may appear to be ambiguous or
         inconsistent with any other provisions hereof which construction may be
         concurred in by the parties to the Indenture and such an interpretation
         shall be binding upon the Unit Holders and the parties to the
         Indenture. The parties to the Indenture shall be under no liability for
         any good faith interpretation of the Indenture;


<PAGE>

                                      -31-


                  (c) the Trustee shall not be responsible for or in respect of
         the recitals herein, the validity or sufficiency of this Indenture or
         for the due execution hereof by the Depositor or the Evaluator, or for
         the form, character, genuineness, sufficiency, value or validity of any
         Securities or for or in respect of the validity of sufficiency of the
         Certificates or of the due execution thereof by the Depositor, and the
         Trustee shall in no event assume or incur any liability, duty or
         obligation to any Unit Holder or the Depositor other than as expressly
         provided for herein. The Trustee shall not be responsible for or in
         respect of the validity of any signatures by or on behalf of the
         Depositor or the Evaluator;

                  (d) the Trustee shall not be under any obligation to appear
         in, prosecute or defend any action, which in its opinion may involve it
         in expense or liability, unless as often as required by the Trustee, it
         shall be furnished with reasonable security and indemnity against such
         expense or liability, and any pecuniary cost of the Trustee from such
         actions shall be deductible from and a charge against the Income and
         Principal Accounts of the Trust. Subject to the foregoing the Trustee
         shall in its discretion undertake such action as it may deem necessary
         at any and all times to protect the Trust and the rights and interests
         of the Unit Holders pursuant to the terms of this Indenture; provided,
         however, that the expenses and costs of such actions, undertakings or
         proceedings shall be reimbursable to the Trustee from the Income and
         Principal Accounts, and the payment of such costs and expenses shall be
         secured by a lien on the Trust prior to the interests of the Unit
         Holders;

                  (e) the Trustee may employ agents, attorneys, accountants and
         auditors and shall not be answerable for the default or misconduct of
         any such agents, attorneys, accountants or auditors if such agents,
         attorneys, accountants or auditors shall have been selected with
         reasonable care; provided, however, that if the Trustee chooses to
         employ the Depository Trust Company in connection with the storage and
         handling of, and the furnishing of administrative services in
         connection with the Securities, the Trustee will be answerable for any
         default or misconduct of the Depository Trust Company and its employees
         and agents as fully and to the same extent as if such default or
         misconduct had been committed or occasioned by the Trustee. The Trustee
         shall be fully protected in respect of any action under this Agreement
         taken, or suffered, in good faith by the Trustee, in accordance with
         the opinion of its counsel. The accounts of the Trusts shall be audited
         not less frequently than annually by independent certified public
         accountants designated from time to time by the Depositor, and the
         reports of such accountants shall be furnished by the Trustee to Unit
         Holders upon request. The fees and expenses charged by such agents,
         attorneys, accountants or auditors shall constitute an expense of the
         Trustee reimbursable from the Income and Principal Accounts of the
         Trust as set forth in Section 6.04 hereof;


<PAGE>

                                      -32-


                  (f) if at any time there is only one Depositor acting
         hereunder and such Depositor shall resign pursuant to Section 8.04 or
         shall fail to undertake or perform any of the duties which by the terms
         of this Agreement are required by it to be undertaken or performed or
         the Depositor shall be dissolved or become incapable of acting or shall
         be adjudged bankrupt or insolvent, or a receiver of the Depositor or of
         its property should be appointed, or any public officer shall take
         charge or control of the Depositor or of its property or affairs for
         the purpose of rehabilitation, conservation or liquidation, then in any
         such case, the Trustee may: (1) appoint a successor depositor who shall
         act hereunder in all respects in place of the Depositor which successor
         shall be satisfactory to the Trustee, and which may be compensated
         semiannually, at rates deemed by the Trustee to be reasonable under the
         circumstances, by deduction from the Income Account of the Trust or, to
         the extent funds are not available in such Account, from the Principal
         Account of the Trust but no such deduction shall be made exceeding such
         reasonable amount as the Securities and Exchange Commission may
         prescribe in accordance with Section 26(a)(2)(C) of the Investment
         Company Act of 1940, or (2) act as Depositor itself without terminating
         the Trust, or (3) terminate the Indenture and the Trust created hereby
         and liquidate the Trust in the manner provided in Section 9.03;

                  (g) if the aggregate net value of all Trust assets as shown by
         any evaluation by the Trustee pursuant to Section 5.01 hereof is less
         than 40% of the aggregate maturity amounts of the Treasury Obligations
         deposited in the Trust calculated after the most recent deposit of
         Treasury obligations in the Trust (without reduction for disposition of
         Treasury Obligations), or if Replacement Treasury Obligations are not
         acquired, or if there has been a material change in the Fund's
         objectives, the Trustee shall when so directed by the Depositor,
         terminate this Indenture and the trust created hereby and liquidate the
         Trust, all in the manner provided in Section 9.03;

                  (h) the Trustee is authorized and empowered to execute and
         file on behalf of the Trust any and all documents, in connection with
         consents to service of process, required to be filed under the
         securities laws of the various States in order to permit the sale of
         Units of the Trust in such States by the Depositor;

                  (i) in no event shall the Trustee be liable for any taxes or
         other governmental charges imposed upon or in respect of the Securities
         or upon the interest thereon or upon it as Trustee hereunder or upon or
         in respect of the Trust which it may be required to pay under any
         present or future law of the United States of America or of any other
         taxing authority having jurisdiction in the premises. For all such
         taxes and charges and for any expenses which the Trustee may sustain or
         incur with respect to such taxes or charges, the Trustee shall be
         reimbursed and indemnified out of the Reserve Account and/or the Income
         and Principal Accounts of the Trust, and the payment

<PAGE>

                                      -33-


         of such amounts so paid by the Trustee shall be secured by a lien on
         the Trust prior to the interests of the Unit Holders;

                  (j) the Trustee except by reason of its own negligence, lack
         of good faith or willful misconduct in the performance of its duties
         hereunder shall not be liable for any action taken, omitted or suffered
         to be taken by it in good faith and believed by it to be authorized or
         within the discretion or rights or powers conferred upon it by this
         Indenture;

                  (k) the Trustee shall sell Fund Shares for the purpose of
         payment of expenses hereunder to the extent that the Income Account
         amounts are insufficient to pay such expenses. The net proceeds of any
         such sales of Fund Shares, to the extent not used for payment of
         expenses, shall be credited to the Principal Account;

                  (l) so long as shall be required by Section 26(a)(2)(C) of the
         Investment Company Act of 1940, no payment to the Depositor or to any
         principal underwriter (as defined in such Act) for the Trust or to any
         affiliated person (as so defined) or agent of the Depositor or such
         underwriter shall be allowed the Trustee as an expense except for
         payment not in excess of such reasonable amounts as the Securities and
         Exchange Commission may prescribe as compensation for performing
         bookkeeping and other administrative services of a character normally
         performed by the Trustee itself.

                  Section 6.02.   Books, Records and Reports: The Trustee shall
keep proper books of record and account of all the transactions under this
Indenture at its corporate trust office including a record of the name and
address of, the Units held by, and the Certificates, if any, issued by the Trust
and held by, every Unit Holder, and the books and records shall be open to
inspection by any Unit Holder of the Trust at all reasonable times during the
usual business hours of the Trustee at its corporate office.

                  The Trustee shall make such annual or other reports as may
from time to time be required under any applicable state or federal statute or
rule or regulation thereunder.

                  Section 6.03.   Indenture and List of Securities on File: The
Trustee shall keep a certified copy in duplicate original of this Indenture
(including the Reference Trust Agreement) on file at its corporate trust office
available for inspection at all reasonable times during its usual business hours
by any Unit Holder, together with a current list of the Securities in the Trust.

                  Section 6.04.   Compensation: For services performed under
this Indenture the Trustee shall receive as compensation such amount as
specified in the Reference Trust Agreement. Such compensation shall be payable
quarterly in an amount equal to one-fourth of the estimated annual compensation
of the Trustee on or before each Quarterly Distribution

<PAGE>

                                      -34-


Date from the Income Account to the extent monies are available and thereafter
from the Principal Account and shall be computed on the basis of the greatest
amount of Units in the Trust at any time during the previous quarter with
respect to which such compensation is being computed. The Trustee may from time
to time adjust its computation set forth above; provided, however, that the
total adjustment upward does not, at the effective time of such adjustment,
exceed the percentage of the total increase, after the date hereof, in consumer
prices for services as measured by the United States Department of Labor
Consumer Price Index entitled "All Services Less Rent" or, if such Index is no
longer published, in a similar index to be determined by the Trustee and the
Depositor. Further provided, however, that the right of the Trustee to increase
its fees shall not be cumulative and, if not exercised by the Trustee for any
calendar year, shall be deemed waived for such calendar year. No exercise of its
right to such increase shall be effective unless made by the Trustee by means of
written notification to the Depositor within 60 days following the publication
of the annual consumer price information referred to above. The consent or
concurrence of any Unit Holder hereunder shall not be required for any such
adjustment or increase. Such compensation shall be deemed to provide only for
the usual normal and proper functions undertaken as Trustee pursuant to this
Indenture. In addition to the foregoing compensation, as part of the Trustee's
compensation for ordinary services performed under this Indenture, the Trustee
is entitled to the benefits to the Trustee that may result from positive
balances in the Income and Principal Accounts. In addition, the Trustee may
charge, to the extent then lawful, the Income and Principal Accounts of the
Trust for any and all expenses (including but not limited to legal, auditing and
printing expenses) of maintaining registration or qualification of the Units
and/or the Trust under Federal or state securities laws subsequent to initial
registration so long as the Depositor is maintaining a market for the Units and
including the fees of counsel which may be retained by the Trustee in connection
with its activities hereunder, and disbursements incurred hereunder and
additional compensation for any extraordinary services performed by the Trustee
hereunder and various governmental charges, expenses and costs of any action
taken by the Trustee to protect the Trust and the rights and interests of Unit
Holders, expenses of indemnification of the Depositor for any losses,
liabilities and expenses in acting as Depositor under the Indenture without
gross negligence, bad faith, willful misfeasance or willful misconduct or
disregard of its obligations and duties, expenses incurred in contacting Unit
Holders upon termination of the Trust and the cost of independent public
accountant auditors of the Trust. The Trustee shall be indemnified by the Trust
and held harmless against any loss or liability accruing to it without
negligence, bad faith or willful misconduct on its part, arising out of or in
connection with the acceptance or administration of the Trust, including the
costs and expenses (including counsel fees) of defending itself against any
claim of liability in the premises. If the cash balances in the Income and
Principal Accounts of the Trust shall be insufficient to provide for amounts
payable pursuant to paragraphs (a), (b) and (c) of Section 3.05 hereof, the
Trustee shall have the power to sell Fund Shares of the Trust. If the aggregate
cash balances of the Income and Principal Accounts plus the proceeds of the sale
of the Fund Shares after deducting ordinary trust expenses are insufficient to
pay extraordinary trust

<PAGE>

                                      -35-


expenses, the Trustee shall have the power to sell Treasury Obligations held by
the Trust. The Trustee shall not be liable or responsible in any way for
depreciation or loss incurred by reason of any sale of Securities made pursuant
to this Section 6.04. Any monies payable to the Trustee pursuant to this Section
shall be secured by a lien on the Trust prior to the interests of the Unit
Holders.

                  Section 6.05.   Removal and Resignation of Trustee; Successor:
The following provisions shall govern the removal and resignation of the Trustee
and the appointment of any successor trustee:

                  (a) the Trustee or any trustee or trustees hereafter appointed
         may resign and be discharged of the trusts created by this Indenture,
         by executing an instrument in writing resigning as Trustee of the Trust
         and filing the same with the Depositor and mailing a copy of a notice
         of resignation to all Unit Holders then of record, not less than sixty
         days before the date specified in such instrument when, subject to
         Section 6.05(e), such resignation is to take effect. Upon receiving
         such notice of resignation, the Depositor shall promptly appoint a
         successor trustee as hereinafter provided, by written instrument, in
         duplicate, one copy of which shall be delivered to the resigning
         Trustee and one copy to the successor trustee. If at any time the
         Trustee shall become incapable of acting, or shall have an order of
         relief entered with respect to it, or shall be adjudicated 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 purposes of
         rehabilitation, conservation or liquidation, or upon the determination
         of the Depositor to remove the Trustee for any reason, either with or
         without cause, including but not limited to a determination by the
         Depositor that the Trustee has materially failed to perform its duties
         under the Indenture and the interest of Unit Holders has been
         substantially impaired as a result, then in any such case the Depositor
         may remove the Trustee and appoint a successor trustee by written
         instrument, in duplicate, one copy of which shall be delivered to the
         Trustee so removed and one copy to the successor trustee; provided that
         a notice of such removal and appointment of a successor trustee shall
         be mailed by the Depositor to each Unit Holder then of record;

                  (b) any successor trustee appointed hereunder shall execute,
         acknowledge and deliver to the Depositor and to the retiring Trustee an
         instrument accepting such appointment hereunder, and such successor
         trustee without any further act, deed or conveyance shall become vested
         with all the rights, powers, duties and obligations of its predecessor
         hereunder with like effect as if originally named Trustee herein and
         shall be bound by all the terms and conditions of this Indenture. Upon
         the request of such successor trustee, the retiring Trustee shall, upon
         payment of any amounts due the retiring Trustee, or provision therefor
         to the satisfaction of such retiring Trustee, execute and

<PAGE>

                                      -36-


         deliver an instrument acknowledged by them transferring to such
         successor trustee all the rights and powers of the retiring Trustee;
         and the retiring Trustee shall transfer, deliver and pay over to the
         successor trustee all Securities and monies at the time held by it
         hereunder, together with all necessary instruments of transfer and
         assignment or other documents properly executed necessary to effect
         such transfer and such of the records or copies thereof maintained by
         the retiring Trustee in the administration hereof as may be requested
         by the successor trustee, and shall thereupon be discharged from all
         duties and responsibilities under this Indenture. The retiring Trustee
         shall, nevertheless retain a lien upon all Securities and monies at the
         time held by it hereunder to secure any amounts then due the retiring
         Trustee;

                  (c) in case at any time the Trustee shall resign and no
         successor trustee shall have been appointed and have accepted
         appointment within thirty days after notice of resignation has been
         received by the Depositor, the retiring Trustee may forthwith apply to
         a court of competent jurisdiction for the appointment of a successor
         trustee. Such court may thereupon, after such notice, if any, as it may
         deem proper and prescribe, appoint a successor trustee;

                  (d) any corporation into which any trustee hereunder may be
         merged or with which it may be consolidated, or any corporation
         resulting from any merger or consolidation to which any trustee
         hereunder shall be a party, shall be the successor trustee under this
         Indenture without the execution or filing of any paper, instrument or
         further act to be done on the part of the parties hereto, anything
         herein, or in any agreement relating to such merger to retain certain
         powers, rights and privileges theretofore obtaining for any period of
         time following such merger or consolidation, to the contrary
         notwithstanding;

                  (e) any resignation or removal of the Trustee and appointment
         of a successor trustee pursuant to this Section shall become effective
         upon acceptance of appointment by the successor trustee as provided in
         subsection (b) hereof.

                  Section 6.06.   Qualifications of Trustee: The Trustee shall
be a corporation organized and doing business under the laws of the United
States or the State of New York, which is authorized under such laws to exercise
corporate trust powers and having at all times an aggregate capital, surplus,
and undivided profits of not less than $5,000,000 and having its principal
office and place of business in the Borough of Manhattan, the City and State of
New York.
<PAGE>

                                      -37-


                                   ARTICLE VII

                             RIGHTS OF UNIT HOLDERS

                  Section 7.01.   Beneficiaries of Trust: By the purchase and
acceptance or other lawful delivery and acceptance of a Unit of the Trust the
Unit Holder shall be deemed to be a beneficiary of such Trust and vested with
all rights, title and interest in the Trust attributable to such Unit, subject
to the terms and conditions of this Indenture and of the Certificate, if any,
evidencing such Unit.

                  Section 7.02.   Rights, Terms and Conditions: In addition to
the other rights and powers set forth in the other provisions and conditions of
this Indenture, the Unit Holders shall have the following rights and powers and
shall be subject to the following terms and conditions:

                  (a) a Unit Holder may at any time tender his Units to the
         Trustee for redemption in accordance with Section 5.02;

                  (b) the death or incapacity of any Unit Holder shall not
         operate to terminate this Indenture or the Trust, nor entitle his legal
         representatives or heirs to claim an accounting or to take any action
         or proceeding in any court of competent jurisdiction for a partition or
         winding up of the Trust, nor otherwise affect the rights, obligations
         and liabilities of the parties hereto or any of them. Each Unit Holder
         expressly waives any right he may have under any rule of law, or the
         provisions of any statute, or otherwise, to require the Trustee at any
         time to account, in any manner other than as expressly provided in this
         Indenture, in respect of the Securities or monies from time to time
         received, held and applied by the Trustee hereunder;

                  (c) no Unit Holder shall have any right to vote or in any
         manner otherwise control the operation and management of the Trust or
         the obligations of the parties hereto, nor shall anything herein set
         forth, or contained in the terms of a Certificate, be construed so as
         to constitute the Unit Holders from time to time as partners or members
         of any association; nor shall any Unit Holder ever be under any
         liability to any third persons by reason of any action taken by the
         parties to this Indenture, or any other cause whatsoever.


<PAGE>

                                      -38-


                                  ARTICLE VIII

                                    DEPOSITOR

                  Section 8.01.   Liabilities; Power of Attorney: The Depositor,
or the Depositors if there be more than one, shall be severally liable in
accordance herewith for the obligations imposed upon and undertaken by the
Depositor hereunder, provided, however, that, without in any way affecting or
diminishing such several liability, each Depositor of the Trust shall indemnify
the other Depositors thereof and hold such other Depositors harmless from and
against any and all costs, expenses and liabilities (including attorneys' fees)
which such other Depositors may suffer or incur as a result of or by reason of
any act or failure to act hereunder on the part of the indemnifying Depositor.
At all times prior to the termination of the Trust and while the Depositors
thereof shall continue to act jointly hereunder, there shall be maintained on
file with the Trustee a power of attorney executed in favor of one Depositor by
the other Depositors constituting and appointing the nonexecuting Depositor the
true and lawful agent and attorney-in-fact of the executing Depositors to
execute and deliver for and on behalf of the executing Depositors any and all
notices, opinions, certificates, lists, demands, directions, instruments, or
other documents provided or permitted to be executed or delivered by the
Depositors hereunder in connection with the Trust or to take any other action in
respect hereof. Such power of attorney shall continue in effect as to the
executing Depositors until written notice of revocation thereof has been given
by such executing Depositors to the Trustee. Prior to receipt of such notice of
revocation the Trustee shall be entitled to rely conclusively upon such power of
attorney as authorizing the non-executing Depositor to give any notice, opinion,
certificate, list, demand, direction, instrument or other document provided for
or permitted hereunder or to take any other action in respect hereof on behalf
of the executing Depositors as to which such power of attorney is in effect.

                  Section 8.02.   Discharge: If there be more than one
Depositor, the following provisions shall provide for the discharge of a
Depositor and the liability of the Depositors in the event of the discharge of a
Depositor:

                  (a) in the event that any Depositor shall fail to undertake or
         perform any of the duties which by the terms of this Agreement are
         required by it to be undertaken or performed and such failure shall
         continue for 30 days after notice to the Depositors from the Trustee or
         if any Depositor shall become incapable of acting or shall have any
         order of relief entered with respect to it, or a receiver of the
         property of any Depositor shall be appointed or any public officer
         shall take charge or control of any Depositor or its property or
         affairs for the purpose of rehabilitation, conservation or liquidation,
         then such Depositor shall forthwith be and shall be deemed to be
         discharged forever as a

<PAGE>

                                      -39-


         Depositor hereunder and thereupon the remaining Depositors shall act
         hereunder without the necessity of any other or further action on its
         part or on the part of the Trustee;

                  (b) in the event that the power of attorney referred to in
         Section 8.01 shall be revoked by written notice given by an executing
         Depositor and it shall not be replaced within one business day by
         another power of attorney conforming with the requirements of said
         Section 8.01 the Depositors of the Trust shall be deemed to have been
         unable to reach agreement with respect to action to be taken jointly by
         them hereunder in connection with the Trust and thereupon the Depositor
         which has revoked the power of attorney executed by it shall be
         discharged hereunder upon the expiration of such one-day period and
         thereupon the other Depositors shall act hereunder without the
         necessity of any other or further action on their part or on the part
         of the Trustee;

                  (c) notwithstanding the discharge of a Depositor of the Trust
         in accordance with this Section 8.02, such Depositor shall continue to
         be fully liable in accordance with the provisions hereof in respect of
         action taken or refrained from under this Agreement by the Depositors
         before the date of such discharge or by the undischarged Depositors
         before or after the date of such discharge, as fully and to the same
         extent as if no discharge has occurred.

                  Section 8.03.   Successors: The covenants, provisions and
agreements herein contained shall in every case be binding upon any successor or
successors to any Depositor and shall be binding upon the General Partners of
any Depositor which may be a partnership and upon the capital interest of the
limited partners of any Depositor which may be a partnership. In the event of
the death, resignation or withdrawal of any partner of any Depositor which may
be a partnership, the partner so dying, resigning or withdrawing shall be
relieved of all further liability hereunder if at the time of such death,
resignation or withdrawal such Depositor maintains a net worth (determined in
accordance with generally accepted accounting principles) of at least
$1,000,000. In the event of an assignment by any Depositor to a successor
corporation or a Partnership as permitted by the next following sentence, such
Depositor and, if such Depositor is a partnership, its partners shall be
relieved of all further liability under this Agreement. Any Depositor may
transfer all or substantially all of its assets to a corporation or partnership
which carries on the business of such Depositor, if, at the time of such
transfer, such successor duly assumes all the obligations of such Depositor
under this Agreement.

                  Section 8.04.   Resignation: If at any time any Depositor of
the Trust shall desire to resign its position as such a Depositor hereunder, the
Depositor desiring to resign may resign by delivering to the Trustee an
instrument executed by such resigning Depositor and upon such delivery, the
resigning Depositor shall be discharged and shall no longer be liable in any
manner hereunder except as to acts or omissions occurring prior to such
delivery;

<PAGE>

                                      -40-


provided, however, that concurrently with or subsequent to such resignation the
Trustee may appoint a new Depositor to act and to assume the duties of the
resigning Depositor by an instrument executed by the Trustee and the new
Depositor. Such new Depositor shall not be under any liability hereunder for
occurrences or omissions prior to the effective time of execution of such
instrument.

                  Section 8.05.   Additional Depositors: The Depositor of the
Trust and the Trustee may at any time appoint one or more corporations or
partnerships to act as new Depositor of such Trust, in addition to those
currently serving, by an instrument executed by such Depositor, the Trustee, and
such corporations or partnerships; provided, however, that at the time of such
execution each new Depositor maintains a net worth (determined in accordance
with generally accepted accounting principles) of at least $1,000,000. Upon such
execution, a new Depositor shall be deemed to be a depositor for all purposes
under this Indenture, and the covenants, provisions and agreements herein
contained shall in every case be binding upon such new Depositor and shall be
binding upon the General Partner of any such new Depositor which may be a
partnership and upon the capital interest of the limited partners of any such
new Depositor which may be a partnership, but such new Depositor shall not be
liable hereunder for occurrences or omissions prior to the effective time of
execution of such instrument.

                  Section 8.06.   Exclusions from Liability: The following
provisions shall provide for certain exclusions from the liability of the
Depositor:

                  (a) no Depositor of the Trust shall be under any liability to
         any other Depositor of the Trust, such Trust or the Unit Holders
         thereof, for any action taken or for refraining from the taking of any
         action in good faith pursuant to this Agreement, or for errors in
         judgment or liable or responsible in any way for depreciation or loss
         incurred by reason of the acquisition or sale of any Securities;
         provided, however, that this provision shall not protect the Depositor
         against any liability to which it would otherwise be subject by reason
         of willful misfeasance, bad faith or gross negligence or by reason of
         its reckless disregard of its obligations and duties hereunder. The
         Depositor of the Trust may rely in good faith on any paper, order,
         notice, list, affidavit, receipt, evaluation, opinion, endorsement,
         assignment, draft or any other document of any kind prima facie
         properly executed and submitted to them, or any of them, by any other
         Depositor of the Trust, the Trustee, the Evaluator or any other person.
         The Depositor shall in no event be deemed to have assumed or incurred
         any liability, duty, or obligation to any Unit Holder, the Evaluator or
         the Trustee other than as expressly provided for herein;

                  (b) the Depositor shall not be under any obligation to appear
         in, prosecute or defend any legal action which in its opinion may
         involve it in any expense or liability; provided, however, that the
         Depositor may in its discretion undertake any such action

<PAGE>

                                      -41-


         which it may deem necessary or desirable in respect of this Agreement
         and the rights and duties of the parties hereto and the interests of
         the Unit Holders hereunder;

                  (c) none of the provisions of this Agreement shall be deemed
         to protect or purport to protect the Depositor of the Trust against any
         liability to the Trust or to the Unit Holders thereof or to each other
         (if there is more than one Depositor) to which the Depositor would
         otherwise be subject by reason of willful misfeasance, bad faith or
         gross negligence in the performance of the duties of the Depositor, or
         by reason of the Depositor's reckless disregard of the obligations and
         duties of the Depositor under this Agreement.


                                   ARTICLE IX

                 ADDITIONAL COVENANTS; MISCELLANEOUS PROVISIONS

                  Section 9.01.   Amendments: This Indenture may be amended from
time to time by the parties hereto or their respective successors, without the
consent of any of the Unit Holders (a) to cure any ambiguity or to correct or
supplement any provision contained herein which may be defective or inconsistent
with any other provision contained herein; or (b) to change any provision hereof
as may be required by the Securities and Exchange Commission or any successor
governmental agency exercising similar authority; or (c) to make such other
provision in regard to matters or questions arising hereunder as shall not
adversely affect the interests of the Unit Holders; provided, that the Indenture
may also be amended by the Depositor and the Trustee (or the performance of any
of the provisions of the Indenture may be waived) with the consent of Unit
Holders evidencing 51% of the Units at the time outstanding under the Indenture
for the purpose of adding any provisions to or changing in any manner or
eliminating any or the provisions of the Indenture or of modifying in any manner
the rights of Unit Holders; provided, further, that this Indenture (including
any Reference Trust Agreement) may not be amended (nor may any provision thereof
be waived) so as to (1) permit an increase in the number of Units issuable
except as the result of the deposit of Additional Securities, as herein
provided, or to reduce the relative interest in the Trust of any Unit Holder
without his consent (2) permit the deposit or acquisition of Securities or other
property either in addition to or in substitution for any of the Securities on
hand in the Trust except in the manner permitted by the Trust Indenture as in
effect on the Date of Deposit, or to provide the Trustee with the power to
engage in business or investment activities not specifically authorized in this
Indenture as originally adopted or (3) adversely affect the characterization of
the Trust as a grantor trust for federal income tax purposes.

                  Section 9.02.   Notice of Amendment: Promptly after the
execution of any amendment the Trustee shall furnish written notification of the
substance of such amendment

<PAGE>

                                      -42-


to all Unit Holders then of record at their addresses appearing on the
registration books of the Trustee.

                  Section 9.03.   Termination: The Trust shall terminate upon
the maturity, redemption, sale or other disposition as the case may be of the
last Security held in the Trust unless sooner terminated upon the direction of
the Depositor to the Trustee. The Trust may be terminated upon the direction of
the Depositor when the aggregate net asset value of all Trust assets as shown in
the Evaluator's evaluation is less than 40% of the aggregate maturity amounts of
the Treasury Obligations deposited in the Trust calculated after the most recent
deposit of Treasury Obligations in the Trust (without reduction for disposition
of Treasury Obligations), or if Replacement Treasury obligations are not
acquired, or if there is a material change in the Fund's investment objectives
as hereinbefore specified and may be terminated at any time by the written
consent of the Holders of Fifty One per cent of the Units of the Trust;
provided, that in no event shall the Trust continue beyond the Termination Date
as set forth in Part II of the Reference Trust Agreement. Written notice of any
termination, specifying the time or times at which the Unit Holders of such
Trust may surrender any Certificates they hold for cancellation shall be given
by the Trustee to each Unit Holder at his address appearing on the registration
books of the Trustee.

                  (a) Within a reasonable period of time after termination of
         the Trust the Trustee shall liquidate such Securities of the Trust then
         held, if any, as it shall deem necessary for payment of Trust expenses,
         to the extent the amounts in the Income and Principal Accounts are
         insufficient, and shall:

                    (i) deduct from the Income Account of the Trust or, to the
              extent that funds are not available in such Account, from the
              Principal Account of the Trust and pay to itself individually an
              amount equal to the sum of (1) its accrued compensation for its
              ordinary recurring services in connection with the Trust, (2) any
              compensation due it for its extraordinary services and (3) any
              costs, expenses or indemnities in connection with the Trust as
              provided herein;

                   (ii) deduct from the Income Account of the Trust or, to the
              extent that funds are not available in such Account, from the
              Principal Account of the Trust and pay any unpaid fee and expenses
              of the Evaluator in connection with the Trust;

                  (iii) deduct from the Income Account of the Trust or the
              Principal Account of the Trust any amounts which may be required
              to be deposited in the Reserve Account of the Trust to provide for
              payment of any applicable taxes or other governmental charges and
              any amounts which the Trustee and Depositor have jointly agreed to
              deposit in the Reserve Expense Account and any other amounts which
              may be required to meet expenses incurred under this Indenture in
              connection with the Trust.


<PAGE>

                                      -43-


                  (b) The Trustee shall fully liquidate the remaining Treasury
         Obligations and shall, upon each Unit Holder's surrender for
         cancellation of his Certificate or Certificates, if the Units are
         certificated, distribute to each Unit Holder such Unit Holder's pro
         rata interest in the balance of the Income Account and Principal
         Account of the Trust and the proceeds of such liquidation.

                  The amounts to be so distributed to each Unit Holder shall be
         the pro rata share of the balance of the total Income and Principal
         Accounts of the Trust as shall be represented by the Units therein held
         by such Unit Holder.

                  (c) A Unit Holder may notify the Trustee in writing on or
         before the Evaluation Time on the Termination Date as to whether such
         Unit Holder desires: 1) to receive his pro rata share of the Fund
         Shares in-kind; or 2) to receive the cash proceeds from the sale of his
         pro rata share of the Fund Shares. The Trustee shall liquidate all Fund
         Shares not distributed in-kind. Unit Holders who do not notify the
         Trustee of their election will receive cash from the sale of their pro
         rata share of Fund Shares (option 2). In any case, Unit Holders will
         receive their pro rata share of the Treasury Obligations and any other
         assets of the Trust in cash.

                  (d) A Unit Holder choosing in-kind distribution of Fund Shares
         will receive such distribution no later than the third business day
         after the Termination Date subject to payment by such Unit Holder of
         any tax or governmental charges which may be imposed thereon. This
         distribution shall consist of such Unit Holder's pro rata portion in
         whole shares of the Fund Shares held in the Trust as of the Termination
         Date. Fractional share entitlement will be distributed in cash.

                  (e) Together with such distribution to each Unit Holder as
         provided for in (b) of this Section, the Trustee shall furnish to each
         such Unit Holder a final distribution statement as of the date of
         computation of the amount distributable to Unit Holders, setting forth
         the information in substantially the form and manner provided for in
         Section 3.06 hereof.

                  The Trustee shall be under no liability with respect to monies
held by it in the Income, Reserve, Reserve Expense and Principal Accounts upon
termination except to hold the same in trust without interest until disposed of
in accordance with the terms of this Indenture.

                  The Trustee may in its discretion, and shall when so directed
by the Depositor in writing, postpone the Termination Date (1) for any period
during which the New York Stock Exchange is closed other than customary weekend
and holiday closings; (2) for any period during which (as determined by the
Securities and Exchange Commission by rule, regulation or order) (i) trading on
the New York Stock Exchange is restricted or (ii) an emergency

<PAGE>

                                      -44-


exists as a result of which disposal by the Trust of the Securities is not
reasonably practicable or it is not reasonably practicable fairly to determine
in accordance with the provisions hereof the value of the Securities for the
purposes of any Trust Evaluation; or (3) for such other periods as the
Securities and Exchange Commission may by order permit.

                  In the event that all of the Unit Holders who hold
Certificates of the Trust shall not surrender their Certificates for
cancellation within six months after the time specified in the above-mentioned
written notice, the Trustee shall give a second written notice to the remaining
holders of Certificates to surrender their Certificates for cancellation and
receive the liquidation distribution with respect thereto. If within one year
after the second notice all the Certificates shall not have been surrendered for
cancellation, the Trustee may take steps, or may appoint an agent to take
appropriate steps, to contact the remaining holders of Certificates concerning
surrender of their Certificates and the cost thereof shall be paid out of the
monies and other assets which remain in trust hereunder.

                  Section 9.04.   Construction: This Indenture is delivered in
the State of New York, and all laws or rules of construction of such State shall
govern the rights of the parties hereto and the Unit Holders and the
interpretation of the provisions hereof. Headings and titles herein are for
convenience only and should not influence such interpretation.

                  Section 9.05.   Registration of Units: The Depositor agrees
and undertakes on its own part to register the units with the Securities and
Exchange Commission or other applicable governmental agency pursuant to
applicable federal or state statutes, if such registration shall be required,
and to do all things that may be necessary or required to comply with this
provision during the term of each Trust which refers to this Indenture and the
Trustee shall incur no liability or be under any obligation or expense in
connection therewith.

                  Section 9.06.   Written Notice: Any notice, demand, direction
or instruction to be given to the Depositor hereunder shall be in writing and
shall be duly given if mailed or delivered to the Depositor c/o Prudential
Securities Incorporated at One Seaport Plaza, New York, New York 11292 or at
such other address as shall be specified by the Depositor to the other parties
hereto in writing. Any notice, demand, direction or instruction to be given to
the Trustee shall be in writing and shall be duly given if mailed or delivered
to the corporate trust office of the Trustee, 101 Barclay Street, New York, New
York 10286 or such other address as shall be specified to the other parties by
the Trustee in writing. Any notice, demand, direction or instruction to be given
to the Evaluator shall be in writing and shall be duly given if mailed or
delivered to the Evaluator, Attention: Vice President, Bond Department, 55 Water
Street, New York, New York 10041 or such other address as shall be specified to
the other parties hereto by the Evaluator in writing. Any notice to be given to
the Unit Holders shall be duly given if mailed or delivered to each Unit Holder
at the address of such holder appearing on the registration books of the
Trustee.


<PAGE>

                                      -45-


                  Section 9.07.   Severability: If any one or more of the
covenants, agreements, provisions or terms of this Indenture shall be held to be
contrary to any express provision of law or contrary to policy of express law,
though not expressly prohibited, or against public policy, or shall for any
reason whatsoever be held invalid, then such covenants, agreements, provisions
or terms shall be deemed severable from the remaining covenants, agreements,
provisions or terms of this Indenture and shall in no way affect the validity or
enforceability of the other provisions of this Indenture or of the Certificates,
or the rights of the Unit Holders.

                  Section 9.08.   Dissolution of Depositors Not to Terminate:
The dissolution of one or all of the Depositors (if more than one) from or for
any cause whatsoever shall not operate to terminate this Indenture insofar as
the duties and obligations of the Trustee and Evaluator are concerned.

                  Section 9.09.   Name: Depositor reserves the right to use the
name "Government Securities Equity Trust," with a distinguishing series number
or name, without the consent of the Trustee.

                  IN WITNESS WHEREOF, Prudential Securities Incorporated has
caused this Trust Indenture and Agreement to be executed by one of its
authorized officers and its corporate seal to be hereto affixed and attested by
its Assistant Secretary; The Bank of New York has caused this Trust Indenture
and Agreement to be executed by one of its authorized officers and its corporate
seal to be hereto affixed and attested by one of its Assistant Secretaries and
Kenny S&P Evaluation Services, a division of J.J. Kenny Co., Inc. has caused
this Trust Indenture and Agreement to be executed by facsimile signature by one
of its authorized officers and its corporate seal to be hereto affixed and
attested by facsimile signature by one of its Vice Presidents or Secretaries;
all as of the day, month and year first above written.

                                          PRUDENTIAL SECURITIES
                                           INCORPORATED, Depositor


                                          By /s/ Richard R. Hoffmann
                                            ----------------------------------
                                                First Vice-President
                                                Unit Investment Trust Department

(SEAL)

ATTEST:

By /s/ Kathleen Maguire
  ------------------------------
  Assistant Secretary

                                          THE BANK OF NEW YORK, Trustee

<PAGE>

                                      -46-



                                          By /s/ Thomas Centrone
                                            ----------------------------------
                                                Vice President


(SEAL)

ATTEST:

By /s/ Dorothy Alencastro
  -------------------------------
  Assistant Vice President



                                          KENNY S&P EVALUATION SERVICES, a
                                          division of J.J. Kenny Co., Inc.
                                              Evaluator


                                          By /s/ Frank A. Ciccotto
                                            ----------------------------------
                                            Title:  Vice President


(SEAL)

ATTEST

By /s/ James Davies
  --------------------------------
  Title:  Senior Vice President

<PAGE>


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


                  I, Rudolf Reitmann, a Notary Public in and for the said County
in the State aforesaid, do hereby certify that Tom Centrone and Dorothy
Alencastro personally known to me to be the same persons whose names are
subscribed to the foregoing instrument and personally known to me to be the Vice
President and Assistant Vice President, respectively, of The Bank of New York, a
corporation, appeared before me this day in person, and acknowledged that they
signed, sealed with the corporate seal of The Bank of New York, and delivered
the said instrument as their free and voluntary act as such Vice President and
Assistant Vice President, respectively, and as the free and voluntary act of
said The Bank of New York for the uses and purposes therein set forth.

                  GIVEN, under my hand and notarial seal this 18 day of
July, 2000.

                                         /s/ Rudolf Reitmann
                                        -----------------------
                                             Notary Public

(SEAL)