BEAR STEARNS MORTGAGE SECURITIES INC
8-K, 1997-04-11
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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

                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the

                         Securities Exchange Act of 1934

                Date of Report (date of earliest event reported)
                                 March 27, 1997

               Bear Stearns Mortgage  Securities Inc. (as Depositor under a
               Pooling  Agreement dated as of December 1, 1996 providing for the
               issuance of Mortgage Pass-Through Certificates, Series 1996-10)

                      BEAR STEARNS MORTGAGE SECURITIES INC.
               (Exact name of registrant as specified in charter)

      Delaware                        33-62710                    13-3633241
   --------------                -----------------               ------------
   (State or other               (Commission File                (IRS Employer
   jurisdiction of                  Number)                      Identification
   incorporation)                                                   No.)


                    245 Park Avenue, New York, New York 10167
               (Address of principal executive offices) (Zip Code)

                                 (212) 272-2000
               Registrant's telephone number, including area code


                         Not Applicable________________
              (Former name or former address, if changed since last
                                    report.)
<PAGE>
Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

         (c)  Exhibits

         Exhibit No.

         1.1    Terms Agreement dated as of March 24, 1997 between the
                Registrant and Bear, Stearns & Co. Inc.

         4.1    Pooling Agreement dated as of March 1, 1997 between the
                Registrant  and First Trust  National  Association, as
                Trustee.
<PAGE>
                                   SIGNATURES


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


                                       BEAR STEARNS MORTGAGE SECURITIES INC.
                                              (Registrant)


                                        Date: April 11, 1997

                                        By:/s/ Joseph Jurkowski
                                        Name: Joseph Jurkowski
                                        Title: Vice President



                                                 Exhibit 1.1
                                                 EXECUTION COPY


                      BEAR STEARNS MORTGAGE SECURITIES INC.

                            Pass-Through Certificates


                                 TERMS AGREEMENT


                                                         Dated: March 24, 1997

To:  BEAR STEARNS MORTGAGE SECURITIES INC.

Re:  Underwriting Agreement dated June 25, 1996

Series Designation:  Series 1997-3

Class Designation Schedule:  Class A-1

Terms of the Certificates:


                     Original Principal                          Pass-Through
Class                     Amount                                 Interest Rate

A-1                    $54,672,353.00                                 (1)

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

(1)     The effective per annum interest rate borne by the Certificates  during
        each Interest  Accrual Period with respect to a Distribution  Date will
        equal a fraction,  expressed  as a  percentage  truncated at the fourth
        decimal place,  the numerator of which is equal to the aggregate amount
        in respect of interest paid to the  certificateholders  for the related
        Interest Accrual Period  multiplied by 12, and the denominator of which
        is the principal amount of the Certificates  immediately  prior to such
        Distribution Date.

Distribution Dates: With respect to each month, the 25th day of such month,
or,  if such  is not a  Business  Day  (as  defined  herein),  then on the  next
successive  Business Day. A "Business Day" means a day other than a Saturday,  a
Sunday or a day on which banking  institutions in New York, New York or the city
in which the corporate  trust office of the Trustee is located are authorized or
obligated by law or executive order to be closed.

Certificate Rating:  "Aaa" by Moody's Investors Service,  Inc. and "AAA" by
Fitch Investors Service, L.P.

Form of Certificates:  Book-entry (Depository Trust Company).

Trust Fund Assets: The Pooled Certificates to be included in the Trust Fund
are as described in Schedule A hereto.

Purchase Price: The aggregate purchase price payable by the Underwriter for
the  Certificates  covered  by this  Agreement  will be 100.4% of the  principal
balance of the  Certificates  plus accrued  interest from March 25, 1997 to, but
not including, the Closing Date.

Closing Date:  March 27, 1997, 9:00 a.m., New York time

Miscellaneous  Matters:  (a) The Pooling and  Servicing  Agreement  and the
Mortgage Loan Schedule referred to in the Underwriting Agreement shall be deemed
to be references to the Pooling Agreement and the Pooled Certificates  Schedule,
respectively;

(b) notices to the  Underwriter  shall be to the attention of Jeffrey Mayer
and notices to the Company shall be to the attention of Joseph T. Jurkowski, Jr.

The  undersigned,  as sole  Underwriter,  agrees,  subject to the terms and
provisions of the above-referenced Underwriting Agreement, which is incorporated
herein in its entirety and made a part hereof,  to purchase the principal amount
of the Class of the above-referenced Series of Certificates set forth herein.

BEAR, STEARNS & CO. INC.



By:  /s/ Marshall Coburn
     Name: Marshall Coburn
     Title: Sr. Managing Director

Accepted:

BEAR STEARNS MORTGAGE SECURITIES INC.


By: /s/ Joseph Jurkowski
     Name:  Joseph Jurkowski
     Title: Vice President

<PAGE>

                                   SCHEDULE A

                               POOLED CERTIFICATES

                                                                  Class %
Full Name of Series(1)                                            in Trust

Pooled FNMA Certificates
   Guaranteed REMIC Pass-Through Certificates,                     35.29%
   Fannie Mae REMIC Trust 1992-45, Class 45-Z
   Stripped Mortgage Backed Securities                             0.30%
   Trust Number 000252-CL, Class 2
   Guaranteed REMIC Pass-Through Certificates,                     48.90%
   Fannie Mae REMIC Trust, 1993-246, Class F
   Guaranteed REMIC Pass-Through Certificates,                     13.96%
   Fannie Mae REMIC Trust, 1997-G2, Class Z
   Pooled FHLMC Certificates
   Multiclass Mortgage Securities, Series 6003, Class SA           42.45%
   Multiclass Mortgage Participation Certificates,                 23.60%
   Series 1505, Class QB
   Multiclass Mortgage Participation Certificates                  36.37%
   Series 1603, Class SB
   Multiclass Mortgage Participation Certificates,                 20.53%
   Series 1723, Class SB
   Multiclass Mortgage Participation Certificates,                 47.05%
   Series 1869, Class TG
   Multiclass Mortgage Participation Certificates,                100.00%
   Series 1933, Class SA
   Modifiable and Combinable REMIC Certificates,                   10.44%
   Series 1933, Class SG

______________________

(1)   Unless otherwise specified in a footnote to this Schedule A, the entire
series was issued in book entry form.


                                                      Exhibit 4.1

                     BEAR STEARNS MORTGAGE SECURITIES INC.,

                                    Depositor


                                       and


                        FIRST TRUST NATIONAL ASSOCIATION,

                                     Trustee


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

                                POOLING AGREEMENT
                            Dated as of March 1, 1997
                        --------------------------------


                                   $54,672,353

                      Bear Stearns Mortgage Securities Inc.
                            Pass-Through Certificates
                                  Series 1997-3


<PAGE>
                                TABLE OF CONTENTS

ARTICLE I  DEFINITIONS                                                     1
Section 1.01. Defined Terms................................................1

ARTICLE II  CONVEYANCE OF THE POOLED CERTIFICATES; ORIGINAL
ISSUANCE OF CERTIFICATES                                                  11
Section 2.01. Conveyance of the Pooled Certificates.......................11
Section 2.02. Acceptance of Trust Fund by Trustee; Initial Issuance of
              Certificates................................................12
Section 2.03. Representations and Warranties of the Depositor
              and the Trustee.............................................13
Section 2.04.  Substitution of Pooled Certificates........................16

ARTICLE III  ADMINISTRATION OF THE POOLED CERTIFICATES
PAYMENTS AND REPORTS TO CERTIFICATEHOLDERS                                18
Section 3.01. Administration of the Trust Fund and the Pooled
              Certificates................................................18
Section 3.02. Collection of Monies........................................18
Section 3.03. Establishment of Certificate and Trustee Fee Accounts;
              Deposits Therein............................................18
Section 3.04. Permitted Withdrawals From the Certificate Account..........20
Section 3.05. Distributions...............................................20
Section 3.06. Statements to Certificateholders............................22
Section 3.07. Access to Certain Documentation and Information.............23
Section 3.08. Calculation of Monthly Distribution Amount..................23
Section 3.09. No Exchange.................................................24


ARTICLE IV  THE CERTIFICATES                                              24
Section 4.01. The Certificates............................................24
Section 4.02. Registration of Transfer and Exchange of Certificates.......26
Section 4.03. Mutilated, Destroyed, Lost or Stolen Certificates...........27
Section 4.04. Persons Deemed Owners.......................................27
Section 4.05.  Exchange of Certificates...................................28


ARTICLE V  THE TRUSTEE                                                    28
Section 5.01. Duties of Trustee...........................................28
Section 5.02. Certain Matters Affecting the Trustee.......................30
Section 5.03. Trustee Not Liable for Certificates or Pooled Certificates..30
Section 5.04. Trustee May Own Certificates................................31
Section 5.05. Trustee's Fees; Indemnification of the Trustee..............31
Section 5.06. Eligibility Requirements for Trustee........................32
Section 5.07. Resignation and Removal of the Trustee......................32
Section 5.08. Successor Trustee...........................................33
Section 5.09. Merger or Consolidation of Trustee..........................34
Section 5.10. Appointment of Co-Trustee or Separate Trustee...............34


ARTICLE VI  THE DEPOSITOR                                                 35
Section 6.01. Liability of the Depositor..................................35
Section 6.02. Merger, Consolidation or Conversion of the Depositor........35
Section 6.03. Limitation on Liability of the Depositor and Others.........35


ARTICLE VII  TERMINATION                                                  36
Section 7.01. Termination.................................................36


ARTICLE VIII  MISCELLANEOUS PROVISIONS                                    38
Section 8.01. Amendment...................................................38
Section 8.02. Counterparts................................................39
Section 8.03. Limitation on Rights of Certificateholders..................39
Section 8.04. Governing Law...............................................40
Section 8.05. Notices.....................................................40
Section 8.06. Severability of Provisions..................................41
Section 8.07. Successors and Assigns......................................41
Section 8.08. Article and Section Headings................................41
Section 8.09. Notices to Rating Agencies..................................41



Exhibit A -                Form of Class A-1 Certificate
Exhibit B -                Form of Option Exercise Notice
Schedule A -               Pooled Certificates

<PAGE>
     POOLING  AGREEMENT,  dated as of March 1, 1997, by and between Bear Stearns
Mortgage  Securities  Inc.,  as  depositor  (the  "Depositor"),  and First Trust
National Association, as trustee (the "Trustee").

                              PRELIMINARY STATEMENT

     The Depositor intends to cause the issuance of and to sell its Pass-Through
Certificates,  Series 1997-3 (the "Certificates")  representing in the aggregate
the entire beneficial  ownership of a trust fund (the "Trust Fund"), the primary
assets of which are the Pooled Certificates (defined herein).

     All things necessary to make this Agreement a valid declaration of trust by
the Depositor in accordance with its terms have been done.

     In  consideration  of  the  premises  and  the  mutual   agreements  herein
contained, the Depositor and the Trustee agree as follows:


                                    ARTICLE I

                                   DEFINITIONS

     Section 1.01. Defined Terms

     Whenever used in this Agreement,  including the Preliminary Statement,  the
following words and phrases,  unless the context otherwise requires,  shall have
the following meanings:

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

     Agreement: This Pooling Agreement and all amendments hereof and supplements
hereto.

     Available Funds: As of any date of  determination,  the aggregate amount on
deposit in the  Certificate  Account as of such date, net of any portion thereof
which  represents  amounts to be paid to any Person  pursuant  to clause (ii) of
Section 3.04.

     Business  Day:  Any day other than a  Saturday,  a Sunday or a day on which
banking  institutions  in New York or in the city in which the  Corporate  Trust
Office of the Trustee is located are authorized or obligated by law or executive
order to close.

     Certificate: Any Class A-1 Certificate as executed hereunder by the Trustee
and  authenticated  and  delivered  hereunder  by  the  Certificate   Registrar,
substantially in the form of Exhibit A hereto.

     Certificate  Account:  The trust  account or  accounts,  which shall at all
times be  Eligible  Accounts,  created  and  maintained  by the  Trustee for the
benefit of the  Certificateholders  pursuant to Section 3.03. Funds deposited in
the Certificate  Account shall be held in trust for the  Certificateholders  for
the uses and purposes set forth in Article III hereof.

     Certificate  Owner: Any Person who is the beneficial owner of a Certificate
registered in the name of the Depository or its nominee.

     Certificate Principal Balance:  With respect to any Certificate,  as of any
date  of   determination,   the  then  outstanding   principal  amount  of  such
Certificate,  which is  equal  to the  product  of (a) the  Percentage  Interest
evidenced  by such  Certificate  and (b)  the  then  Class  A-1  Balance  of the
Certificates.

     Certificate  Registrar  and  Certificate  Register:  Shall  each  have  the
meanings provided in Section 4.02.

     Certificateholder  or Holder: As to the  Certificates,  the person in whose
name a  Certificate  is  registered in the  Certificate  Register,  except that,
solely for the purpose of giving any  consent,  approval  or waiver  pursuant to
this Agreement,  any Certificate  registered in the name of the Depositor or any
Affiliate  thereof shall be deemed not to be outstanding  and shall not be taken
into account for  purposes of  determining  whether the Holders of  Certificates
evidencing the requisite  aggregate  Percentage Interest necessary to effect any
such  consent,  approval  or  waiver  has been  obtained,  unless  such  Persons
collectively own all the Certificates.

     Class: Collectively, all of the Certificates bearing the same designation.

     Class A-1 Balance: The aggregate principal amount of Class A-1 Certificates
outstanding  as of any date of  determination,  which  is equal to the  Original
Class  A-1  Balance  minus all  amounts  received  as  principal  on the  Pooled
Certificates  plus all amounts of  accreted  interest  added to the  outstanding
principal  balance of the Z  Certificates.  If, on any  Distribution  Date,  the
amount  by  which  the  Z  Certificates  have  accreted  exceeds  the  aggregate
distributions  of  principal  on the other  Pooled  Certificates,  the Class A-1
Balance will be increased by the amount of such excess.

     Class A-1 Certificate:  Any one of the Class A-1 Certificates,  as executed
hereunder  by the Trustee  and  authenticated  and  delivered  hereunder  by the
Certificate Registrar, substantially in the form of Exhibit A hereto.

     Class A-1  Percentage:  The  Original  Class  A-1  Balance  divided  by the
Original Principal Balance, or 100.00%.

     Class Balance: The Class A-1 Balance.

     Closing Date: March 27, 1997.

     Code: The Internal Revenue Code of 1986, as amended.

     Corporate Trust Office:  The corporate trust office of the Trustee at which
at any  particular  time its  corporate  trust  business  with  respect  to this
Agreement  shall be  administered,  which office at the date of the execution of
this Agreement is located at 180 East Fifth Street,  St. Paul,  Minnesota 55101,
Attention:  Structured  Finance  Department,  telephone  no.  (612)  244-  0011,
facsimile no. (617) 244-0089.

     Definitive Certificates: The meaning specified in Section 4.01(b) hereof.

     Deleted Pooled Certificate:  A Pooled Certificate  replaced by a Substitute
Pooled Certificate.

     Depositor:  Bear Stearns Mortgage Securities Inc., a Delaware  corporation,
or its successor in interest.

     Depository:  DTC,  the  nominee  of which is Cede & Co.,  or any  successor
thereto.

     Depository Agreement: The meaning specified in Subsection 4.01(a) hereof.

     Depository   Participant:   A  broker,  dealer,  bank  or  other  financial
institution  or other Person for whom from time to time the  Depository  effects
book-entry transfers and pledges of securities deposited with the Depository.

     Determination Time: Noon, Eastern Standard Time, on a Distribution Date.

     Distribution  Date: With respect to any month, the Distribution  Date shall
be the 25th day of such month or, if such day is not a Business Day, then on the
next succeeding  Business Day. The first  Distribution Date shall occur on April
25, 1997.

     DTC: The Depository Trust Company.

     Eligible Account:  Any of (i) an account maintained with a federal or state
chartered depository institution or trust company, the short-term unsecured debt
obligations  of which  are  rated at least  P-1 by  Moody's  and A-1+ by S&P (or
comparable  ratings if Moody's and S&P are not the Rating  Agencies) at any time
funds are on deposit therein,  (ii) a trust account or accounts  maintained with
the trust department of a federally  chartered  depository  institution or trust
company acting in its fiduciary  capacity,  or (iii) a trust account or accounts
maintained with the trust department of a state chartered depository institution
or trust  company  acting in its fiduciary  capacity and subject to  regulations
regarding fiduciary funds on deposit therein substantially similar to 12 CFR ss.
9.10(b).

     ERISA: The Employee Retirement Income Security Act of 1974, as amended, and
the rules and regulations promulgated thereunder.

     Escrow Amount:  With respect to any Distribution  Date,  one-twelfth of the
product of 0.0025% and the Class Balance  immediately prior to such Distribution
Date.

     Exchange  Date: A date on which  Certificates  are exchanged for a pro rata
portion of the Pooled Certificates pursuant to Section 4.05.

     FHLMC: The Federal Home Loan Mortgage Corporation.

     FHLMC Pooled  Certificate  Distribution  Date:  With respect to each of the
Pooled FHLMC  Certificates  (other than the Pooled FHLMC G003/SA  Certificates),
the 15th day of each month,  and in the case of the FHLMC G003/SA  Certificates,
the 25th day of each month, or, if any such day is not a business day as defined
in the applicable Underlying  Agreement,  the next succeeding business day as so
defined.

     Final  Distribution  Date:  With respect to the Pooled  Certificates or the
Certificates,  as applicable,  the Pooled  Certificate  Distribution Date or the
Distribution Date, as applicable,  on which the final distribution thereon is to
be made in accordance with the related  Underlying  Agreement or this Agreement,
as the case may be.

     Fitch: Fitch Investors Service, L.P., or its successor in interest.

     FMV  Opinion:  An  opinion  of  an  investment  banking  firm  of  national
reputation  (other than an affiliate of the Depositor)  which may be obtained in
connection  with the  determination  of the  Repurchase  Price for a  repurchase
pursuant to Section 2.03(c).

     FNMA: The Federal National Mortgage Association.

     FNMA Pooled  Certificate  Distribution  Date:  With  respect to each of the
Pooled FNMA Certificates (other than the Pooled FNMA 97-G2/Z Certificates),  the
25th day of each month, and in the case of the Pooled FNMA 97-G2/Z Certificates,
the 17th day of each month, or, if any such day is not a business day as defined
in the applicable Underlying  Agreement,  the next succeeding business day as so
defined.

     IO Certificates:  Pooled FHLMC 1869/TG  Certificates,  Pooled FHLMC 1933/SA
Certificates,  Pooled  FHLMC  1933/SG  Certificates  and  Pooled  FNMA  252-CL/Z
Certificates.

     Independent:  When used with respect to any specified Person, such a Person
who  (i) is in fact  independent  of the  Depositor  and  any  Affiliate  of the
Depositor,  (ii) does not have any direct financial interest in the Depositor or
in any Affiliate of the Depositor, and (iii) is not connected with the Depositor
or  any  Affiliate  of  the  Depositor  as  an  officer,   employee,   promoter,
underwriter, trustee, partner, director or person performing similar functions.

     Interest Deficiency: With respect to the Pooled FNMA 93-246/F Certificates,
on each FNMA Pooled Certificate Distribution Date, the interest, if any, accrued
and unpaid on the  principal  balance of the Pooled FNMA  93-246/F  Certificates
prior to the  immediately  preceding  Interest  Accrual Period that has not been
previously paid.

     Investment Company Act: The Investment Company Act of 1940, as amended from
time to time, and the rules and regulations promulgated thereunder.

     LIBOR:  London  interbank  offered  quotations  for  one  month  Eurodollar
deposits.

     Majority Certificateholders:  The Holders of Certificates evidencing in the
aggregate   greater  than  50%  of  the  aggregate  Class  Balance  of  all  the
Certificates.

     Monthly  Distribution  Amount:  With respect to any Distribution  Date, the
aggregate of (i) the interest  distribution  amount for such Distribution  Date,
and (ii) the principal distribution amount for such Distribution Date.

     Moody's: Moody's Investors Service, Inc. or its successor in interest.

     Notice of Final Distribution:  With respect to the Pooled Certificates, any
notice provided pursuant to the related Underlying  Agreement to the effect that
final  distribution on a Pooled  Certificate shall be made only upon presentment
and  surrender  thereof.  With  respect  to the  Certificates,  the notice to be
provided  pursuant to Section  7.01(b) to the effect that final  distribution on
the Certificates shall be made only upon presentment and surrender thereof.

     Officers'  Certificate:  A certificate signed by the Chairman of the Board,
the President,  a Senior Vice  President,  a Vice President or an Assistant Vice
President and by the  Treasurer,  the  Secretary,  an Assistant  Treasurer or an
Assistant  Secretary  of the  Depositor  or the  Trustee,  as  required  by this
Agreement.

     Opinion of Counsel:  A written  opinion of counsel,  who may be counsel for
the  Depositor,  which  opinion is  addressed  to the Trustee and is  reasonably
acceptable to the Trustee.

     Original Class A-1 Balance: $54,672,353.

     Option Exercise Fee: The fee set forth in Section 4.05(c).

     Option Exercise Notice:  A notice,  substantially in the form of Exhibit B,
delivered  by a Holder of  Certificate  Owner  holding  not less than 10% of the
outstanding principal amount of the Certificates.

     Percentage  Interest:  With respect to any Certificate,  the portion of the
Class represented by such Certificate,  expressed as a percentage, the numerator
of which is the initial  outstanding  principal amount of such Certificate as of
the Closing Date, as specified on the face thereof, and the denominator of which
is the Original Class A-1 Balance.

     Permitted  Investments:  Any one or more of the  following  obligations  or
securities:

                    (i) direct  obligations of, or obligations  fully guaranteed
               as to timely  payment of  principal  and  interest by, the United
               States or any agency or  instrumentality  thereof,  provided such
               obligations are backed by the full faith and credit of the United
               States;

                    (ii) demand and time  deposits in,  certificates  of deposit
               of, or bankers'  acceptances  (which  shall each have an original
               maturity  of not more than 90 days and,  in the case of  bankers'
               acceptances,  shall in no event have an original maturity of more
               than  365  days or a  remaining  maturity  of more  than 30 days)
               denominated  in United States  dollars  issued by, any depository
               institution or trust company  (including the Trustee or any agent
               of the Trustee,  acting in its respective commercial  capacities)
               incorporated  under the laws of the  United  States of America or
               any state thereof and subject to supervision  and  examination by
               federal and/or state banking authorities,  so long as at the time
               of such investment or contractual  commitment  providing for such
               investment  the  commercial   paper  or  other   short-term  debt
               obligations of such depository  institution or trust company (or,
               in the case of a depository  institution  which is the  principal
               subsidiary of a holding  company,  the commercial  paper or other
               short-term  debt  obligations  of such  holding  company)  have a
               credit   rating  of  "A-1+"   and  P-1  from  S&P  and   Moody's,
               respectively;

                    (iii)  repurchase  obligations  with respect to any security
               described in clause (i) above where such security has a remaining
               maturity of one year or less and where such repurchase obligation
               has been  entered  into with a  depository  institution  or trust
               company (acting as principal) described in clause (ii) above;

                    (iv)  securities  bearing  interest  or sold  at a  discount
               issued  by any  corporation  incorporated  under  the laws of the
               United States of America or any state  thereof  which  securities
               are rated "AAA" and "Aaa" by S&P and  Moody's,  respectively,  at
               the time of such investment or contractual  commitment  providing
               for such investment; provided, however, that securities issued by
               any particular  corporation will not be Permitted  Investments to
               the  extent  that   investment   therein   will  cause  the  then
               outstanding   principal  amount  of  securities  issued  by  such
               corporation  and held as part of the Trust  Fund to exceed 10% of
               the sum of the  aggregate  outstanding  principal  balance of all
               Pooled  Certificates  and the aggregate  principal  amount of all
               Permitted Investments in the Certificate Account;

                    (v) commercial paper (having original maturities of not more
               than 365 days) of any corporation  incorporated under the laws of
               the  United  States  or any  state  thereof  which on the date of
               acquisition  has been rated by each Rating  Agency in its highest
               short-term rating available,  provided that such commercial paper
               shall have a remaining maturity of not more than 30 days;

                    (vi)   certificates  or  receipts   representing   ownership
               interests  in future  principal  payments on  obligations  of the
               United  States of America or its  agencies  or  instrumentalities
               (which obligations are backed by the full faith and credit of the
               United  States of America)  held by a custodian  on behalf of the
               holders of such receipts; and

                           (vii) money  market  funds which are rated by Moody's
                  at the time at which  the  investment  is made in its  highest
                  long-term rating  category,  any such money market funds which
                  provide for demand  withdrawals being  conclusively  deemed to
                  satisfy any maturity  requirements  for Permitted  Investments
                  set forth in the Certificates or this Agreement;

provided, however, that no instrument shall be a Permitted Investment if it
represents,  either (1) the right to receive only interest payments with respect
to the underlying debt instrument or (2) the right to receive both principal and
interest  payments derived from  obligations  underlying such instrument and the
principal  payments with respect to such instrument  provide a yield to maturity
greater  than  120%  of  the  yield  to  maturity  at  par  of  such  underlying
obligations.

     Person:  Any  individual,   corporation,   partnership,  limited  liability
company, joint venture, association,  joint-stock company, trust, unincorporated
organization or government or any agency or political subdivision thereof.

     Pooled Certificateholder: The Trustee or its Depository Participant for the
benefit of the Certificateholders.

     Pooled  Certificate  Class  Percentage:  Means,  for each  class of  Pooled
Certificates,  the percentage  which the Pooled  Certificate  constitutes of its
entire class as set forth in Schedule A attached hereto under the caption "Class
% in Trust."

     Pooled Certificate  Distribution Date: Each of the FHLMC Pooled Certificate
Distribution Date and the FNMA Pooled Certificate Distribution Date.

     Pooled Certificate Distribution Date Statement: The information provided or
updated  monthly  by FNMA  and  FHLMC  in  respect  of  Pooled  Certificates  in
connection with each Pooled Certificate Distribution Date.

     Pooled  Certificates:  The Pooled  FHLMC  Certificates  and the Pooled FNMA
Certificates  sold by the Depositor  to, and  registered in the name of, or held
for the  benefit of, the  Trustee  pursuant to Section  2.01 or 2.04 and as more
particularly described in Schedule A hereto.

     Pooled FHLMC Certificates:  Multiclass Mortgage Participation Certificates,
issued by FHLMC and  identified as the Pooled FHLMC  Certificates  in Schedule A
hereto.

     Pooled FHLMC G003/SA Certificates:  FHLMC Multiclass Mortgage Participation
Certificates, Series G003, Class SA.

     Pooled FHLMC 1505/QB Certificates:  FHLMC Multiclass Mortgage Participation
Certificates, Series 1505, Class QB.

     Pooled FHLMC 1603/SB Certificates:  FHLMC Multiclass Mortgage Participation
Certificates, Series 1603, Class SB.

     Pooled FHLMC 1723/SB Certificates:  FHLMC Multiclass Mortgage Participation
Certificates, Series 1723, Class SB.

     Pooled FHLMC 1869/TG Certificates:  FHLMC Multiclass Mortgage Participation
Certificates, Series 1869, Class TG.

     Pooled FHLMC 1933/SA Certificates:  FHLMC Multiclass Mortgage Participation
Certificates, Series 1933, Class SA.

     Pooled FHLMC 1933/SG  Certificates:  FHLMC  Modifiable and Combinable REMIC
Certificates, Series 1933, Class SG.

     Pooled FNMA Certificates:  Guaranteed REMIC  Pass-Through  Certificates and
Stripped Mortgage-Backed  Securities issued by FNMA and identified as the Pooled
FNMA Certificates in Schedule A hereto.

     Pooled  FNMA  92-45/Z  Certificates:  FNMA  Guaranteed  REMIC  Pass-Through
Certificates, FNMA REMIC Trust 1992-45 Class 45-Z.

     Pooled FNMA  93-246/F  Certificates:  FNMA  Guaranteed  REMIC  Pass-Through
Certificates, FNMA REMIC Trust 1993-246, Class F.

     Pooled  FNMA  97-G2/Z  Certificates:  FNMA  Guaranteed  REMIC  Pass-Through
Certificates, FNMA REMIC Trust 1997-G2 Class Z.

     Pooled  FNMA  252-CL/2   Certificates:   FNMA  Stripped   Mortgage   Backed
Securities, Trust Number 000252-CL, Class 2.

     Pooled   Inverse   Floating   Rate   Certificates:   Pooled  FHLMC  G003/SA
Certificates,   Pooled  FHLMC   1505/QB   Certificates,   Pooled  FHLMC  1603/SB
Certificates,   Pooled  FHLMC   1723/SB   Certificates,   Pooled  FHLMC  1933/SA
Certificates and Pooled FHLMC 1933/SG Certificates.

     Purchase  Agreement:  The  Purchase  Agreement  dated as of March 24,  1997
between  Bear,  Stearns & Co.,  Inc.  and the  Depositor  relating to the Pooled
Certificates.

     Rating Agency or Rating Agencies: Moody's and Fitch or their successors. If
such agencies or their successors are no longer in existence,  "Rating Agencies"
shall be  deemed  to  refer to such  nationally  recognized  statistical  rating
agencies,  or other comparable Persons,  designated by the Depositor,  notice of
which designation shall be given to the Trustee, and specific ratings of Moody's
and Fitch shall be deemed to refer to the  equivalent  ratings of the parties so
designated.

     Record Date: With respect to any  Distribution  Date, the last Business Day
of the  month  preceding  the  month in which  such  Distribution  Date  occurs;
provided,  however,  that for this  purpose the  Distribution  Date is deemed to
occur  on the  25th of each  month,  without  regard  to  whether  such day is a
Business Day.

     Remaining  Pooled  Certificate:  Any  class  of  the  Pooled  Certificates,
following the date on which the principal balance or notional  principal balance
of all other classes of the Pooled  Certificates  is reduced to zero and, in the
case of the Pooled FNMA 93-246/F  Certificates  (unless the Pooled FNMA 93-246/F
Certificates are the Remaining Pooled Certificate), no further amount is payable
in respect of any Interest  Deficiency and interest  thereon in accordance  with
the terms of the Underlying Agreement pursuant to which the Pooled FNMA 93-246/F
Certificates were issued.

     Repurchase  Price:  In  connection  with the  repurchase  of (i) any Pooled
Certificate that is not an IO Certificate pursuant to Section 2.03(c) or Section
7.01(a)(i),  a price  equal  to the  outstanding  Pooled  Certificate  principal
balance thereof as of the date of repurchase plus accrued  interest  thereon and
any Interest  Deficiency and interest  thereon in accordance with the applicable
Underlying  Agreements,  (ii) any  Pooled IO  Certificate  pursuant  to  Section
2.03(c),  a price equal to the highest  bid  obtained by the Trustee  from three
dealers then active in the market for such Pooled IO Certificate (or such lesser
number as may then be  active);  provided,  however,  if the  Trustee is able to
obtain a bid from only one  active  dealer,  then the  Trustee  may obtain a FMV
Opinion to determine whether such bid is at least equal to the fair market value
of such Pooled IO Certificate  and the  Repurchase  Price shall be the higher of
the bid or the fair market value of such Pooled IO  Certificate as stated in any
such FMV Opinion;  provided further, however, if the Trustee is unable to obtain
a bid from any active  dealer,  then the Trustee  shall obtain a FMV Opinion and
the  Repurchase  Price shall be equal to the fair market value of such Pooled IO
Certificate  as stated in such FMV Opinion  and (iii) any Pooled IO  Certificate
pursuant to Section  7.01(a)(i),  a price  equal to the portion of the  interest
distribution  amount  allocable to such Pooled IO  Certificate  for such date of
repurchase.

     Responsible Officer:  When used with respect to the Trustee, any officer of
the Trustee  assigned to and working in its  Corporate  Trust  Office or similar
group  administering the Trusts hereunder and also, with respect to a particular
matter, any other officer of the Trustee to whom a particular matter is referred
by the Trustee because of such officer's  knowledge of and familiarity  with the
particular subject.

     Securities Act: The Securities Act of 1933, as amended.

     Single Certificate:  A Certificate with an original  Certificate Balance of
$1,000.

     Substitute  Pooled  Certificate:  One or more mortgage  related  securities
tendered to the Trustee pursuant to Section 2.04, issued by GNMA, FNMA or FHLMC,
which meet the following  criteria,  (i) such  substitution  shall be (a) in the
case of the Pooled FNMA 93-246/F  Certificates,  with at least one floating rate
certificate  and which is entitled to receive  interest based on LIBOR and which
has a formula of LIBOR plus a minimum  of 175 basis  points,  (b) in the case of
the Pooled FNMA 92-45/Z  Certificates and the Pooled FNMA 97-G2/Z  Certificates,
with one or more  fixed rate or  accrual  certificates  bearing a coupon no less
than the coupon of the Pooled  Certificate  being  substituted for or (c) in the
case of the Pooled  Inverse  Floating  Rate  Certificates,  one or more  inverse
floating rate certificates based on LIBOR whose combined coupon will be at least
equal to the  coupon of the Pooled  Certificates  being  substituted  for at all
levels  of  LIBOR,  (ii) the sum of the  outstanding  principal  amounts  of the
Substitute  Pooled  Certificates  equals  the sum of the  outstanding  principal
amounts of the Deleted  Pooled  Certificates  being  substituted  for, (iii) the
Substitute  Pooled  Certificates as the date of substitution  (a) ultimately are
backed by mortgage loans with a weighted  average  pass-through  no more than 50
basis points  below and no more than 50 basis points above the weighted  average
pass-through  of the  mortgage  loans  ultimately  backing  the  Deleted  Pooled
Certificate  and (b) which are  conventional,  fixed rate,  one- to four-family,
fully amortizing,  level payment,  first mortgage loans with original maturities
of up to 30 years, (iv) the inclusion of which in the Trust Fund will not result
in a withdrawal or downgrading in the rating assigned to the Certificates by the
Rating Agencies,  written  confirmation of which shall be provided by the Rating
Agencies to the Trustee and (v) will not cause the Trust to lose its status as a
grantor  trust for federal  income tax  purposes as  indicated  in an Opinion of
Counsel to be provided to the Trustee.

     Trustee:  First Trust National Association,  in its capacity as trustee, or
its successor in interest.

     Trustee Fee: With respect to any  Distribution  Date, the monthly fee equal
to one-twelfth of the product of 0.0175% and the Class Balance immediately prior
to such  Distribution  Date,  but not less  than  $300.00  with  respect  to any
Distribution Date.

     Trustee Fee Escrow Account:  The trust account or accounts,  which shall at
all times be Eligible  Accounts,  created and maintained by the Trustee pursuant
to Section 3.03.

     Trust Fund: The segregated pool of assets subject hereto,  constituting the
corpus of the trust created hereby and to be administered hereunder,  consisting
of:

                    (i) the Pooled Certificates;

                    (ii)  all  amounts   payable  on  the  Pooled   Certificates
               following the Closing Date pursuant to the Underlying Agreements;

                    (iii) the  Certificate  Account  and such funds or assets as
               are from time to time deposited in the Certificate Account;

                    (iv) the  Depositor's  rights under the Purchase  Agreement;
               and

                    (v)  the  income,  payments  and  proceeds  of  each  of the
               foregoing.

     Underlying Agreements:  The agreements pursuant to which the related Pooled
Certificates were issued, as in effect on the Closing Date.

     Underlying  Series:  Each series of securities which includes one of Pooled
Certificates.

     Z Certificates:  Pooled FNMA 92-45/Z  Certificates  and Pooled FNMA 97-G2/Z
Certificates.


<PAGE>

                                   ARTICLE II

                     CONVEYANCE OF THE POOLED CERTIFICATES;
                        ORIGINAL ISSUANCE OF CERTIFICATES

     Section 2.01. Conveyance of the Pooled Certificates

     (a) The  Depositor,  concurrently  with the execution and delivery  hereof,
does  hereby  sell,  transfer,  assign,  set-over  and  otherwise  convey to the
Trustee,  in trust, for the use and benefit of the  Certificateholders,  without
recourse,  all the right,  title and interest of the Depositor (i) in and to the
Pooled  Certificates,  (ii) in and to the Purchase Agreement and (iii) in and to
all other assets constituting the Trust Fund. Such assignment includes,  without
limitation,  all  amounts  payable on the Pooled  Certificates  pursuant  to the
Underlying Agreements following the Closing Date.

     (b) In connection with such transfer and assignment,  and concurrently with
its execution and delivery of this  Agreement,  the Depositor  shall have caused
the  Pooled  Certificates  to be  registered  in the  book-entry  records of the
Federal Reserve Banks in the name of the Trustee.

     (c)  The  transfer  of  the  Pooled   Certificates  and  all  other  assets
constituting the Trust Fund is absolute and is intended by the parties hereto as
a sale.

     (d) It is intended that the  conveyances by the Depositor to the Trustee of
the Pooled  Certificates  as provided for in this Section 2.01 be construed as a
sale by the Depositor to the Trustee of the Pooled  Certificates for the benefit
of the Certificateholders.  Further, it is not intended that any such conveyance
be deemed to be a pledge of the  Pooled  Certificates  by the  Depositor  to the
Trustee to secure a debt or other obligation of the Depositor.  However,  in the
event that the Pooled Certificates are held to be property of the Depositor,  or
if for any reason this Agreement is held or deemed to create a security interest
in the Pooled  Certificates,  then it is intended that (a) this Agreement  shall
also be deemed to be a security agreement within the meaning of Articles 8 and 9
of the New York Uniform  Commercial Code and the Uniform  Commercial Code of any
other applicable  jurisdiction;  (b) the conveyance provided for in Section 2.01
shall be deemed to be a grant by the  Depositor  to the  Trustee  of a  security
interest in all of the  Depositor's  right  (including the power to convey title
thereto), title and interest, whether now owned or hereafter acquired, in and to
(1) the Pooled  Certificates,  (2) all  amounts  payable  pursuant to the Pooled
Certificates  in  accordance  with the terms thereof and (3) any and all general
intangibles consisting of, arising from or relating to any of the foregoing, and
all proceeds of the conversion,  voluntary or involuntary, of the foregoing into
cash,  instruments,  securities or other property,  including without limitation
all amounts from time to time held in the  Certificate  Account,  whether in the
form of cash,  instruments,  securities or other property; (c) the possession by
the Trustee or any agent of the Trustee of such items of property as  constitute
instruments,  money, negotiable documents or chattel paper shall be deemed to be
"possession  by the secured  party," or  possession  by a purchaser  or a person
designated  by such  secured  party,  for  purposes of  perfecting  the security
interest  pursuant  to the New York  Uniform  Commercial  Code  and the  Uniform
Commercial  Code  of  any  other  applicable  jurisdiction  (including,  without
limitation,  Section 9-305,  8-313 or 8-321 thereof);  and (d)  notifications to
persons holding such property,  and  acknowledgments,  receipts or confirmations
from  persons  holding  such  property,  shall be  deemed  notifications  to, or
acknowledgments,  receipts  or  confirmations  from,  financial  intermediaries,
bailees or agents (as  applicable)  of the Trustee for the purpose of perfecting
such security interest under applicable law.

     The  Depositor  and  the  Trustee,  at  the  Depositor's  or  the  Majority
Certificateholders'  direction,  shall,  to  the  extent  consistent  with  this
Agreement,  take such reasonable actions as may be determined to be necessary to
ensure that, if this Agreement were deemed to create a security  interest in the
Pooled  Certificates,  and the other  property  described  above,  such security
interest would be deemed to be a perfected  security  interest of first priority
under  applicable law and will be maintained as such throughout the term of this
Agreement.

     Section  2.02.  Acceptance  of Trust Fund by Trustee;  Initial  Issuance of
Certificates.

     The Trustee  acknowledges  receipt of the Underlying  Agreements,  the most
recent Pooled Certificate Distribution Date Statements and the receipt by it and
the transfer, delivery and assignment to it of the Pooled Certificates,  in good
faith and without notice of any adverse  claim,  and the assignment to it of all
other assets included in the Trust Fund and declares that it holds and will hold
the Pooled Certificates and all other assets included in the Trust Fund in trust
for the exclusive  use and benefit of all present and future  Certificateholders
in accordance with the terms of this Agreement. Concurrently with such transfer,
delivery  and  assignment  and in  exchange  therefor,  pursuant  to the written
request of the Depositor  executed by an officer of the  Depositor,  the Trustee
has executed and caused to be  authenticated  and delivered to or upon the order
of the Depositor,  the Certificates in authorized  denominations  evidencing the
entire beneficial ownership of the Trust Fund.

     Until the Trust Fund is terminated in accordance with Section 7.01,  except
as provided herein,  the Trustee shall not assign,  sell, dispose of or transfer
any  interest in the Pooled  Certificates  or any other asset  constituting  the
Trust Fund or permit the Pooled Certificates or any other asset constituting the
Trust Fund to be subjected to any lien, claim or encumbrance arising by, through
or under the Trustee or any person claiming by, through or under the Trustee.

     Section  2.03.  Representations  and  Warranties  of the  Depositor and the
Trustee.

     (a) The Depositor hereby represents and warrants to the Trustee and for the
benefit of the Certificateholders, as of the Closing Date, that:

                    (i) The Depositor is a corporation  duly organized,  validly
               existing  and in good  standing  under  the laws of the  State of
               Delaware,   and  the  Depositor  is  possessed  of  all  licenses
               necessary to carry on its business.

                    (ii) The  execution  and  delivery of this  Agreement by the
               Depositor,  and the  performance and compliance with the terms of
               this Agreement by the Depositor, will not violate the Depositor's
               certificate  of  incorporation  or bylaws or constitute a default
               (or an event which,  with notice or lapse of time, or both, would
               constitute  a  default)  under,  or result in the  breach of, any
               material  agreement or other instrument to which it is a party or
               which is applicable to it or any of its assets.

                    (iii) The Depositor has the full right,  power and authority
               to enter into and consummate  all  transactions  contemplated  by
               this  Agreement,  including but not limited to selling the Pooled
               Certificates  to the Trustee,  has duly authorized the execution,
               delivery and performance of this Agreement, and has duly executed
               and delivered this Agreement.

                    (iv) This Agreement,  assuming due authorization,  execution
               and  delivery  by the  Trustee,  constitutes  a valid,  legal and
               binding  obligation  of the  Depositor,  enforceable  against the
               Depositor in  accordance  with the terms  hereof,  subject to (A)
               applicable bankruptcy, insolvency, reorganization, moratorium and
               other  laws  affecting  the  enforcement  of  creditors'   rights
               generally,  and (B) general  principles of equity,  regardless of
               whether such  enforcement is considered in a proceeding in equity
               or at law.

                    (v) The  Depositor is not in violation of, and its execution
               and delivery of this Agreement and its performance and compliance
               with the terms of this  Agreement will not constitute a violation
               of, any law, any order or decree of any court or arbiter,  or any
               order,  regulation  or  demand  of any  federal,  state  or local
               governmental or regulatory  authority,  which violation is likely
               to affect  materially  and  adversely  either the  ability of the
               Depositor to perform its obligations  under this Agreement or the
               financial condition of the Depositor.

                    (vi)  No  litigation  is  pending  or,  to the  best  of the
               Depositor's knowledge, threatened against the Depositor which, if
               determined  adversely  to  the  Depositor,   would  prohibit  the
               Depositor  from  entering  into  this  Agreement  or is likely to
               materially  and  adversely  affect  either  the  ability  of  the
               Depositor to perform its obligations  under this Agreement or the
               financial condition of the Depositor.

                    (vii) The Depositor was,  immediately  prior to the transfer
               of the Pooled Certificates to the Trustee, the sole owner thereof
               free and clear of any lien, pledge,  charge or encumbrance of any
               kind (except any lien created by this Agreement).

                    (viii) The  Depositor  acquired the Pooled  Certificates  in
               good faith without  notice of any adverse  claim,  lien,  charge,
               encumbrance or security interest  (including without  limitation,
               federal tax liens or liens arising under ERISA).

                    (ix) The  Depositor  has not  assigned  any  interest in the
               Pooled  Certificates  or any  distributions  thereon,  except  as
               contemplated herein.

                    (x)   The   Trustee,   in   its   capacity   as   a   Pooled
               Certificateholder,  will be entitled to  distributions  under the
               Underlying  Agreements equal to all distributions of interest and
               principal made on the Pooled Certificates.

                    (xi) As of the Closing Date, the Pooled  Certificates having
               principal  balances have an aggregate  principal  balance greater
               than or  equal  to the  Original  Principal  Balance.  (xii)  The
               information  relating  to the  Pooled  Certificates  set forth in
               Schedule A is true and correct in all material respects.

                    (xiii) Each Pooled Certificate is an Uncertificated Security
               (as such term is defined in Article 8 of the  Uniform  Commercial
               Code) registered on the books of the Federal Reserve Banks in the
               name of the Trustee or its  financial  intermediary  on behalf of
               the Trustee.

                    (xiv) The Pooled  Certificates,  with the  exception  of the
               Pooled FNMA 252-CL/2 Certificates which have been structured as a
               stripped bond or a stripped coupon,  are REMIC regular  interests
               or represent  beneficial  ownership of REMIC regular interests (a
               Modifiable and Combinable REMIC class).

                    (xv) The Depositor has no actual  knowledge after reasonable
               inquiry that (a) each trust issuing each Pooled  Certificate  was
               not duly created and is not validly  existing and (b) each Pooled
               Certificate  (1) was not validly  issued by such trust and (2) is
               not  outstanding,  (3) is  not  the  legal,  valid,  binding  and
               enforceable  obligation  of such trust and (4) is not entitled to
               the benefits of the pooling and servicing  agreement,  indenture,
               trust  agreement or other document  pursuant to which such Pooled
               Certificate   was  issued   (except  as  limited  by  bankruptcy,
               insolvency or other similar laws  affecting  the  enforcement  of
               creditors'   rights   generally   or  to  the  extent  that  such
               enforceability  may  be  subject  to  the  exercise  of  judicial
               discretion in accordance with general equitable principles).

     (b) The Trustee hereby represents and warrants to the Depositor and for the
benefit of the Certificateholders, as of the Closing Date, that:

                    (i) The  Trustee is a  national  banking  association,  duly
               organized  and  validly  existing  under  the laws of the  United
               States of America.

                    (ii) The  execution  and  delivery of this  Agreement by the
               Trustee,  and the  performance  and compliance  with the terms of
               this  Agreement  by the Trustee,  will not violate the  Trustee's
               charter or bylaws or  constitute  a default  (or an event  which,
               with  notice  or lapse  of time,  or  both,  would  constitute  a
               default)  under,  or  result  in  the  breach  of,  any  material
               agreement or other  instrument to which it is a party or which is
               applicable to it or any of its assets.

                    (iii) The Trustee has the full power and  authority to enter
               into  and  consummate  all  transactions   contemplated  by  this
               Agreement,  has  duly  authorized  the  execution,  delivery  and
               performance  of  this  Agreement,   and  has  duly  executed  and
               delivered this Agreement.

                    (iv) This Agreement,  assuming due authorization,  execution
               and delivery by the  Depositor,  constitutes  a valid,  legal and
               binding  obligation  of  the  Trustee,  enforceable  against  the
               Trustee  in  accordance  with the terms  hereof,  subject  to (A)
               applicable bankruptcy, insolvency, reorganization, moratorium and
               other  laws  affecting  the  enforcement  of  creditors'   rights
               generally,  and (B) general  principles of equity,  regardless of
               whether such  enforcement is considered in a proceeding in equity
               or at law.

                    (v) The Trustee is not in  violation  of, and its  execution
               and delivery of this Agreement and its performance and compliance
               with the terms of this  Agreement will not constitute a violation
               of, any law, any order or decree of any court or arbiter,  or any
               order,  regulation  or  demand  of any  federal,  state  or local
               governmental or regulatory  authority,  which violation is likely
               to affect  materially  and  adversely  either the  ability of the
               Trustee to perform its  obligations  under this  Agreement or the
               financial condition of the Trustee.

                    (vi)  No  litigation  is  pending  or,  to the  best  of the
               Trustee's  knowledge,  threatened against the Trustee which would
               prohibit  the Trustee  from  entering  into this  Agreement or is
               likely to materially  and adversely  affect either the ability of
               the Trustee to perform its  obligations  under this  Agreement or
               the financial condition of the Trustee.

                    (vii) The Pooled  Certificates will be held in the Trustee's
               account at the Federal  Reserve Bank in  Minneapolis,  Minnesota;
               the information  relating to the Pooled Certificates set forth on
               Schedule A hereto  conforms to information  set forth on the face
               of the Pooled Certificates and the most recent Pooled Certificate
               Distribution Date Statements,  as applicable; it has acquired the
               Pooled Certificates on behalf of the Certificateholders  from the
               Depositor  in good  faith,  for  value,  and,  to the best of the
               Trustee's  knowledge,  without notice or actual  knowledge of any
               adverse claim,  lien,  charge,  encumbrance or security  interest
               (including,  without  limitation,  federal  tax  liens  or  liens
               arising under  ERISA);  it has not and will not, in any capacity,
               assert any claim or interest in the Pooled  Certificates and will
               hold such Pooled  Certificates  and the proceeds thereof in trust
               pursuant  to  the  terms  of  this  Agreement;  and  it  has  not
               encumbered  or  transferred  its right,  title or interest in the
               Pooled Certificates.

     (c) It is  understood  and agreed that the  foregoing  representations  and
warranties  shall  survive the execution  and delivery of this  Agreement.  Upon
discovery  by  either  party  hereto  of  a  breach  of  any  of  the  foregoing
representations  and  warranties  which  materially  and  adversely  affects the
interests  of  the   Certificateholders   or  either  party  hereto,  the  party
discovering  such breach will give prompt  written  notice  thereof to the other
party  hereto  and to the  Certificateholders.  Within  thirty  (30) days of the
earlier of either  discovery  by or notice to the  Depositor  of any breach of a
representation  or warranty  of the  Depositor  that  materially  and  adversely
affects the interests of the  Certificateholders,  the  Depositor  shall use its
best efforts promptly to cure such breach in all material  respects and, if such
breach  cannot be cured,  the Depositor  shall,  at the election of the Majority
Certificateholders, repurchase each Pooled Certificate affected by the breach at
the Repurchase Price. If the Depositor is to repurchase Pooled Certificates, the
Trustee shall  promptly  determine the Repurchase  Price in accordance  with the
definition thereof. Repurchase of any of the Pooled Certificates pursuant to the
foregoing  provisions  of this  Section  2.03(c)  shall be  accomplished  by (i)
deposit  in the  Certificate  Account  on the  Business  Day  prior  to the next
succeeding  Distribution  Date of the  amount of the  Repurchase  Price and (ii)
amending Schedule A hereto to remove the related Deleted Pooled Certificates.

     Section 2.04.  Substitution  of Pooled FNMA  Certificates.  Notwithstanding
anything to the contrary in this  Agreement,  in lieu of  repurchasing  a Pooled
Certificate  that is not an IO  Certificate  pursuant  to Section  2.03(c),  the
Depositor may, no later than the date by which such  repurchase by the Depositor
would  otherwise  be  required,  tender  to  the  Trustee  a  Substitute  Pooled
Certificate  accompanied by an Officer's  Certificate of the Depositor that such
Substitute  Pooled  Certificate  conforms to the  requirements  set forth in the
definition  of  "Substitute  Pooled  Certificate";   provided,   however,   that
substitution  pursuant to this Section 2.04 in lieu of  repurchase  shall not be
permitted after the termination of the two-year period  beginning on the Closing
Date. The Trustee shall accept any such  Substitute  Pooled  Certificate,  which
shall thereafter be deemed to be a Pooled Certificate hereunder. In the event of
such a substitution,  payments received on the Substitute Pooled Certificate for
the  month  in which  the  substitution  occurs  shall  be the  property  of the
Depositor and payments  received on the Deleted Pooled  Certificate  during such
month shall be the property of the Trust Fund. Upon acceptance of the Substitute
Pooled Certificate, the Trustee shall release to the Depositor and shall execute
and deliver all instruments of transfer or assignment, without recourse, in form
as provided to it as are necessary to vest in the Depositor  title to and rights
under the related Deleted Pooled  Certificate  released pursuant to this Section
2.04. The Depositor shall deliver the documents related to the Substitute Pooled
Certificate   in  accordance   with  the   provisions   of  Section  2.01.   The
representations  and  warranties  set forth in  2.03(a)  concerning  the  Pooled
Certificates  shall be deemed to have been made by the Depositor with respect to
each  Substitute  Pooled  Certificate  as of the  date  of  acceptance  of  such
Substitute  Pooled  Certificate  by the  Trustee.  On or  prior  to the  date of
substitution,  the Trustee  shall (i) amend  Schedule A hereto,  to reflect such
substitution  and shall provide a copy of such amended Schedule to the Depositor
and the Rating Agencies and (ii) provide written acknowledgment to the Depositor
of the receipt by it and the  transfer,  delivery  and  assignment  to it of the
related Substitute Pooled  Certificate,  in good faith and without notice of any
adverse  claim,  and the  assignment  to it of all  other  related  assets to be
included in the Trust Fund.

<PAGE>
                                   ARTICLE III

                   ADMINISTRATION OF THE POOLED CERTIFICATES;
                   PAYMENTS AND REPORTS TO CERTIFICATEHOLDERS

     Section 3.01. Administration of the Trust Fund and the Pooled Certificates.

     If at any  time  the  Trustee,  as a holder  of a  Pooled  Certificate,  is
requested  in such  capacity,  whether  by a  Certificateholder,  a holder  of a
certificate  of an  Underlying  Series  or a  party  to the  related  Underlying
Agreement  or any  other  Person,  to take any  action  or to give any  consent,
approval  or  waiver,  including,  without  limitation,  in  connection  with an
amendment of any Underlying Agreement,  the Trustee shall promptly notify all of
the  Certificateholders  and the  Depositor  of such  request and of its planned
course of action with respect  thereto and shall, in its capacity as a holder of
Pooled  Certificates,  take such action in connection  with the exercise  and/or
enforcement of any rights and/or remedies  available to it in such capacity with
respect to such  request,  as the  Majority  Certificateholders  shall direct in
writing.  The Trustee  shall  promptly  furnish to the  Depositor  and, upon the
written request of a  Certificateholder,  such  Certificateholder,  all notices,
statements,  reports  or other  information  that it  receives  as holder of the
Pooled Certificates.

     Section 3.02. Collection of Monies.

     (a) In  connection  with its  receipt  of any  distribution  on the  Pooled
Certificates on any Pooled Certificate  Distribution Date (or such later date on
which the Trustee shall receive the related Pooled Certificate Distribution Date
Statement),   the  Trustee   shall  review  each  related   Pooled   Certificate
Distribution  Date Statement and shall confirm that the aggregate amount of such
distribution  received is consistent with the information  contained therein (it
being  understood that the Trustee shall be entitled to rely on the accuracy and
correctness of the information set forth on such statements).

     (b) If the Trustee  receives a Notice of Final  Distribution  in respect of
any of the Pooled  Certificates,  the Trustee  shall  present and  surrender any
related Pooled  Certificates  which are in  certificated  form for final payment
thereon in accordance  with the terms and  conditions of the related  Underlying
Agreement and such notice. The Trustee shall promptly deposit in the Certificate
Account the final distribution  received upon presentation and surrender of such
Pooled  Certificates  for distribution in accordance with Section 3.05 hereof on
the next succeeding Distribution Date.

     Section  3.03.  Establishment  of  Certificate  and Trustee  Fee  Accounts;
Deposits Therein.

     (a) The Trustee, for the benefit of the Certificateholders, shall establish
and maintain one or more interest  bearing  trust  accounts  (collectively,  the
"Certificate  Account"),  each of which shall be an Eligible  Account,  entitled
"First Trust National Association, as trustee for the registered holders of Bear
Stearns Mortgage  Securities Inc. Trust  Certificates,  Series 1997-3",  held in
trust by the  Trustee  for the  benefit of the  Certificateholders.  The Trustee
shall cause all distributions received on the Pooled Certificates by the Trustee
in its capacity as holder of the Pooled Certificates,  from whatever source, and
all amounts  received by it representing  payment of a Repurchase Price pursuant
to  Section  2.03(c)  and  7.01(a)(i),  subsequent  to the  Closing  Date  to be
deposited  directly into the Certificate  Account.  The  Certificate  Account is
initially located at the Trustee. The Trustee shall give notice to the Depositor
and to  Certificateholders  of any new location of the Certificate Account prior
to any change thereof.

     (b) In the event that  payments in respect of the Pooled  Certificates  are
received by the Trustee prior to the related  Distribution Date, the Trustee may
invest such funds deposited in the Certificate  Account in one or more Permitted
Investments  held in the name of the Trustee and shall receive as  compensation,
in addition to the Trustee Fee, any interest or investment income earned on such
Permitted   Investments,   which  may  be  withdrawn  by  the  Trustee  on  each
Distribution Date and shall not constitute Available Funds.  Notwithstanding the
foregoing,  no such  Permitted  Investment  may mature later than the day before
such related Distribution Date and no such investment shall be sold prior to its
maturity  date.  The  amount  of any  losses  incurred  in  respect  of any such
investments shall be deposited in the Certificate  Account by the Trustee out of
its own funds immediately as realized.

     (c) The Trustee shall  establish and maintain one or more interest  bearing
trust accounts (collectively,  the "Trustee Fee Escrow Account"),  each of which
shall be an Eligible  Account,  entitled "First Trust National  Association,  as
trustee for the  registered  holders of Bear Stearns  Mortgage  Securities  Inc.
Pass-Through  Certificates,  Series  1997-3,"  held in trust (but outside of the
Trust Fund established hereby) by the Trustee. The Trustee Fee Escrow Account is
initially located at the Trustee. The Trustee shall give notice to the Depositor
and the  Certificateholders of any new location of the Trustee Fee Account prior
to any change thereof. On each Distribution Date the Trustee shall transfer from
the Certificate Account to the Trustee Fee Escrow Account the Escrow Account for
such  Distribution  Date. The Trustee shall invest any amounts  deposited in the
Trustee Fee Escrow Account in one or more Permitted Investments held in the name
of the Trustee in trust. No such Permitted  Investment may mature later than the
day before any  Distribution  Date which in the  Depositor's  sole discretion is
believed  to be a  Distribution  Date upon  which  the  Trustee  Fee may  exceed
interest received on the Pooled Certificates.  No investment shall be sold prior
to its maturity date unless the investment  must be sold to pay the Trustee Fee.
The  amount  of any  losses  incurred  in  respect  of any  investment  shall be
deposited  in the Trustee  Fee Escrow  Account by the  Depositor  out of its own
funds immediately as realized.  All interest and investment income on amounts in
Trustee Fee Escrow Account shall be retained in the Trustee Fee Escrow  Account.
On any Distribution  Date on which the Trustee Fee exceeds the interest received
from the Pooled Certificates,  the Trustee may withdraw the amount of the excess
from the Trustee Fee Escrow  Account,  and pay such excess to the Trustee in its
individual  capacity.  If the  Trustee  resigns  or is removed  and a  successor
trustee is appointed,  any amounts on deposit in the Trustee Fee Escrow  Account
shall  thereafter  be held in the  same  manner  by and for the  benefit  of the
successor trustee. Upon the termination of the Trust Fund, any amount (including
earnings)  remaining  in the  Trustee  Fee Escrow  Account  shall be paid to the
Depositor.

     (d) The  Depositor  shall  cause all  distributions  received on the Pooled
Certificates by the Depositor or any of its Affiliates after the Closing Date to
be deposited directly into the Certificate Account.

     Section 3.04. Permitted Withdrawals From the Certificate Account.

     The  Trustee  may from time to time  withdraw  funds  from the  Certificate
Account for the following purposes:

                    (i) to make  distributions  in the amounts and in the manner
               provided for in Section 3.05;

                    (ii)  to pay to  the  Person  entitled  thereto  any  amount
               deposited in the Certificate Account in error;

                    (iii) to clear and  terminate the  Certificate  Account upon
               the termination of this Agreement; and

                    (iv) to pay  itself,  as  additional  compensation,  the net
               reinvestment  income  permitted  to be paid to it as  provided in
               Section 3.03(b).


     On each  Distribution  Date,  the Trustee shall withdraw all funds from the
Certificate  Account  and shall use such funds  withdrawn  from the  Certificate
Account  only for the  purposes  described  in this  Section 3.04 and in Section
3.05.

     Section 3.05. Distributions.

     (a) On each  Distribution  Date,  the Trustee  shall  apply  amounts in the
Certificate  Account  representing  Available Funds in the following  manner and
order of priority, in each case to the extent of the remaining Available Funds:

                    first, from amounts with respect to interest received on the
               Pooled  Certificates,  to the Trustee,  to pay the portion of the
               Trustee Fee not being  covered by a  withdrawal  from the Trustee
               Fee Escrow  Account  and,  after  payment of the Trustee  Fee, to
               deposit the Escrow Amount in the Trustee Fee Escrow Account;

                    second,  from amounts with respect to principal  received on
               the Pooled Certificates, to the Certificateholders an amount with
               respect to principal,  if any, such that the principal balance of
               the  Certificates   after  such  distribution  is  equal  to  the
               aggregate balance of the Pooled Certificates; and

                    third   from  the   remaining   Available   Funds,   to  the
               Certificateholders as interest.

If  the  Trustee  has  not  received  a  distribution  on,  or  the  Pooled
Certificate  Distribution  Date  Statement  with  respect  to, any of the Pooled
Certificates  by the  Determination  Time,  the  distribution  allocable to such
Pooled  Certificates will not be made on the applicable  Distribution Date, but,
(i) if such distribution and such Pooled Certificate Distribution Date Statement
are received by noon, Eastern Standard Time, on the third Business Day after the
Determination Time, the Trustee will make the distribution on the third Business
Day after the Determination Time (a "Supplemental Distribution Date") or (ii) if
received after noon,  Eastern Standard Time, on the third Business Day after the
Determination  Time, it will be made on the next succeeding  Distribution  Date,
and in neither case will additional interest be paid thereon.

     (b)  All  distributions  made to  Certificateholders  pursuant  to  Section
3.05(a)  on each  Distribution  Date  shall  be  allocated  pro rata  among  the
outstanding  Certificates based upon their respective  Percentage Interests and,
except in the case of the final distribution to the Certificateholders, shall be
made to the Holders of record on the related Record Date.  Distributions  to any
Certificateholder  on any  Distribution  Date shall be made by wire  transfer of
immediately  available funds to the account of such  Certificateholder at a bank
or   other   entity   having   appropriate    facilities   therefor,   if   such
Certificateholder  shall have so notified the Trustee in writing  (which  wiring
instructions  may be in the form of a standing  order  applicable  to all future
Distribution  Dates) no less than five Business Days prior to the related Record
Date  (or,  in the case of the  initial  Distribution  Date,  no later  than the
related  Record  Date)  and is the  registered  owner  of  Certificates  with an
aggregate initial Certificate Balance of not less than $1,000,000,  or otherwise
by check  mailed by first  class mail to the  address of such  Certificateholder
appearing   in  the   Certificate   Register.   Final   distribution   to   each
Certificateholder  will be made in like manner,  but only upon  presentment  and
surrender  of such  Certificate  at the  Corporate  Trust  Office or such  other
location   specified  in  the  notice  to   Certificateholders   of  such  final
distribution.

     (c)  Notwithstanding  any other  provision of this  Agreement,  the Trustee
shall comply with all federal  withholding  requirements  respecting payments to
Certificateholders  of interest or the accrual of original  issue  discount that
the Trustee  reasonably  believes are applicable  under the Code. The consent of
Certificateholders shall not be required for such withholding.  In the event the
Trustee does withhold any amount from payments to any Certificateholder pursuant
to federal  withholding  requirements,  the Trustee  shall  indicate  the amount
withheld to such Certificateholders.

     (d) The Trustee may  conclusively  rely on the information set forth in the
Pooled  Certificate  Distribution  Date  Statements  in making the  calculations
called for in this Section 3.05. If the information  available to the Trustee in
any Pooled  Certificate  Distribution Date Statement is insufficient to make the
calculations  provided  for in this Section  3.05,  the Trustee  shall  promptly
request FHLMC,  with respect to the Pooled FHLMC  Certificates,  and FNMA,  with
respect to the Pooled FNMA Certificates,  to provide  sufficient  information in
writing,  and after  receipt of such  information  the Trustee shall make on the
following  Distribution  Date any necessary  adjustments  in the  application of
amounts in the  Certificate  Account.  If such  information is not received from
FHLMC  or FNMA,  the  Trustee  shall  not be  responsible  for  making  any such
adjustment.

     Section 3.06. Statements to Certificateholders.

     On each Distribution Date, the Trustee shall prepare,  and shall forward by
mail,  a  statement  to each  Certificateholder,  the  Depositor  and the Rating
Agencies stating:


                    (i) the Available Funds for such Distribution Date;

                    (ii) the  interest  distribution  amount  and the  principal
               distribution  amount for such Distribution Date and, with respect
               to each, the components thereof as reported in the related Pooled
               Certificate  Distribution  Date  Statements or other  information
               received  by the Trustee  from FHLMC or FNMA with  respect to the
               Pooled Certificates;

                    (iii) the Class Balance before and after  applying  payments
               on such Distribution Date;

                    (iv) the  effective  interest rate on the  Certificates  for
               such Distribution Date;

                    (v) the outstanding principal and/or notional amount, as the
               case may be,  immediately  prior to and after taking into account
               distributions  made on such  Distribution  Date,  and the current
               interest  rate  on  each  of the  Pooled  Certificates  for  such
               Distribution Date; and

                    (vi) any  amount of the  Trustee  Fee for such  Distribution
               Date.

     In the case of the information furnished pursuant to clauses (ii) and (iii)
above,  the  amounts  shall also be  expressed  as a dollar  amount per $1000 of
principal  face amount.  The  Trustee's  responsibility  for reporting the above
information  is limited to the  availability,  timeliness,  and  accuracy of the
information set forth in the Pooled Certificate Distribution Date Statements and
any additional written information  requested by the Trustee with respect to the
Pooled  Certificates.  If the Trustee  receives any such additional  information
after preparing a statement  required by this Section,  the Trustee shall report
the  related  adjustments  in the  statement  prepared  after  receipt  of  such
information.

     In addition,  the Trustee promptly will furnish to the Depositor,  and upon
the written request of a Certificateholder, to such Certificateholder, copies of
any  notices,  statements,  reports  or other  communications,  received  by the
Trustee in its capacity as a holder of Pooled Certificates.

     On or before March 31st of each  calendar  year,  commencing  in 1998,  the
Trustee  shall  prepare and deliver by first class mail to the  Depositor and to
each   Person  who  at  any  time   during  the  prior   calendar   year  was  a
Certificateholder  of record a statement  containing the information required to
be contained in the regular monthly report to  Certificateholders,  as set forth
in clauses (ii) and (iv) above aggregated for such prior calendar year or in the
case of a  Certificateholder,  the applicable  portion thereof during which such
Person was a  Certificateholder.  Such obligation of the Trustee shall be deemed
to have been satisfied to the extent that substantially  comparable  information
shall be provided by the Trustee  pursuant to any  requirements  of the Code and
regulations thereunder as from time to time are in force.

     The Trustee shall be responsible for preparing, at its own expense, signing
and filing,  on behalf of the Trust  Fund,  federal  income tax and  information
returns with the  Internal  Revenue  Service  ("IRS") and  Minnesota  income tax
returns and the returns of any other state  taxing  authority  the  necessity of
filing of which shall have been  confirmed  to the Trustee in writing  either by
the  delivery of an Opinion of Counsel to such effect or by the  delivery to the
Trustee of a written  notification to such effect by the taxing authority of any
such state.  The  Depositor  shall  provide  the  Trustee  within 10 days of the
Closing  Date all  information  deemed  necessary  by the Trustee to fulfill its
obligations   under  this   paragraph.   The  Trustee   shall  furnish  to  each
Certificateholder  at the time  required  by law  such  information  reports  or
returns as are required by applicable  federal,  state or local law with respect
to the Trust Fund to enable  Certificateholders to prepare their tax returns and
will furnish  comparable  information to the IRS and other taxing authorities as
and when required by law to do so.

     Section 3.07. Access to Certain Documentation and Information.

     The Trustee shall provide to the Depositor access to all reports, documents
and records  maintained by the Trustee in respect of its duties hereunder,  such
access being afforded  without charge but only upon three Business Days' written
request and during normal business hours at offices designated by the Trustee.

     Section 3.08. Calculation of Monthly Distribution Amount.

     All  calculations of the Monthly  Distribution  Amount for any Distribution
Date shall be performed by the Trustee in reliance on the  information  provided
to it in the applicable Pooled Certificate  Distribution Date Statements and any
additional  written  information  requested  by the Trustee  with respect to the
Pooled  Certificates.  The Trustee shall promptly communicate the results of its
calculations to the Depositor and the  Certificateholders  (which obligation may
be satisfied  through the distribution of the statements  required under Section
3.06).

     Section 3.09. No Exchange.

     The Trustee shall not exchange all or a portion of the Pooled FHLMC 1933/SG
Certificates   for  a  related   class  or  classes  of   "Multiclass   Mortgage
Participation Certificates".
<PAGE>
                                   ARTICLE IV

                                THE CERTIFICATES


     Section 4.01. The Certificates.

     (a) The  Depository,  the  Depositor  and the Trustee  have  entered into a
letter agreement dated as of March 26, 1997 (the "Depository Agreement"). Except
as provided in Subsection  4.01(b),  the Certificates  shall at all times remain
registered in the name of the  Depository  or its nominee and at all times:  (i)
registration of such  Certificates may not be trans ferred by the Trustee except
to a successor to the  Depository;  (ii) ownership and transfers of registration
of such  Certificates  on the  books  of the  Depository  shall be  governed  by
applicable rules established by the Depository; (iii) the Depository may collect
its  usual  and  customary  fees,  charges  and  expenses  from  its  Depository
Participants;  (iv) the Trustee shall deal with the Depository as representative
of  the   Certificate   Owners  for  purposes  of   exercising   the  rights  of
Certificateholders  under this  Agreement,  and requests and  directions for and
votes of such representative  shall not be deemed to be inconsistent if they are
made with respect to different  Certificate Owners; and (v) the Trustee may rely
and shall be fully  protected  in  relying  upon  information  furnished  by the
Depository with respect to its Depository Participants.

     All  transfers  by  Certificate  Owners  of  Certificates  shall be made in
accordance  with the procedures  established  by the  Depository  Participant or
brokerage firm representing such Certificate Owners. Each Depository Participant
shall only  transfer  Certificates  of  Certificate  Owners it  represents or of
brokerage firms for which it acts as agent in accordance  with the  Depository's
normal procedures.

     (b) If (i)(A)  the  Depositor  advises  the  Trustee  in  writing  that the
Depository   is  no  longer   willing  or  able  to   properly   discharge   its
responsibilities as Depository and (B) the Trustee or the Depositor is unable to
locate a qualified  successor within 30 days or (ii) the Depositor at its option
advises the Trustee in writing that it elects to terminate the book-entry system
through the Depository, the Trustee shall request that the Depository notify all
Certificate  Owners of the occurrence of any such event and of the  availability
of definitive,  fully registered Certificates (the "Definitive Certificates") to
Certificate  Owners  requesting  the same.  Upon surrender to the Trustee of the
Certificates by the Depository,  accompanied by registration  instructions  from
the  Depository  for  registration,  the  Trustee  shall  issue  the  Definitive
Certificates.  Neither the  Depositor  nor the  Trustee  shall be liable for any
delay in delivery of such  instructions and may conclusively  rely on, and shall
be protected in relying on, such instructions.

     (c) The  Certificates  shall be  substantially  in the  form  set  forth in
Exhibit A hereto.  The  Certificates  shall be executed by manual  signature  on
behalf of the Trustee in its  capacity  as trustee  hereunder  by an  authorized
officer.  Certificates bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Trustee shall be entitled to all
benefits   under   this   Agreement,   subject   to  the   following   sentence,
notwithstanding  that such  individuals  or any of them have ceased to hold such
offices prior to the authentication and delivery of such Certificates or did not
hold such  offices at the date of such  Certificates.  No  Certificate  shall be
entitled  to any  benefit  under this  Agreement,  or be valid for any  purpose,
unless  there  appears  on such  Certificate  a  certificate  of  authentication
substantially  in the form  provided  for  herein  executed  by the  Certificate
Registrar by manual  signature,  and such certificate upon any Certificate shall
be conclusive  evidence,  and the only evidence,  that such Certificate has been
duly authenticated and delivered hereunder.  All Certificates shall be dated the
date of their authentication.

     Pending the  preparation of Definitive  Certificates,  the Trustee may sign
and the Certificate Registrar may authenticate  temporary  Certificates that are
printed,   lithographed  or  typewritten,   in  authorized   denominations   for
Certificates,  substantially of the tenor of the Definitive Certificates in lieu
of which  they are  issued  and with  such  appropriate  insertions,  omissions,
substitutions  and other  variations as the officers or  authorized  signatories
executing such  Certificates  may determine,  as evidenced by their execution of
such  Certificates.  If temporary  Certificates  are issued,  the Depositor will
cause Definitive  Certificates to be prepared without  unreasonable delay. After
the preparation of Definitive Certificates,  the temporary Certificates shall be
exchangeable  for  Definitive  Certificates  upon  surrender  of  the  temporary
Certificates  at the office of the Trustee,  without charge to the Holder.  Upon
surrender  for  cancellation  of any one or  more  temporary  Certificates,  the
Trustee shall sign and the Certificate  Registrar shall authenticate and deliver
in  exchange   therefor  a  like  aggregate   principal  amount,  in  authorized
denominations,  of Definitive Certificates.  Until so exchanged,  such temporary
Certificates  shall  in all  respects  be  entitled  to  the  same  benefits  as
Definitive Certificates.

     (d) The Certificates  will be registered as a single  Certificate held by a
nominee of the  Depository,  and beneficial  interests will be held by investors
through the book-entry  facilities of the Depository in minimum denominations of
$25,000 and increments of $1 in excess thereof,  except that one Certificate may
be issued in a  different  amount  so that the sum of the  denominations  of all
outstanding Certificates shall equal the Original Class A-1 Balance.

     (e) If the  Trust is  terminated  pursuant  to  Section  7.01(a)(iii),  the
book-entry  system through the  Depository  shall be terminated by the Depositor
and the Trustee and the Trustee  shall  request that the  Depository  notify all
Certificate Owners of the occurrence of such event and that, following the Final
Distribution  Date, the  Certificate  Owners as of the Record Date for the Final
Distribution  Date  will be  required  to hold  their  pro rata  portion  of the
Remaining Pooled  Certificates in the book-entry  records of the Federal Reserve
Banks and that the Trustee will not release any further distributions in respect
of  the  Remaining  Pooled  Certificates  to  a  Certificate  Owner  until  such
Certificate  Owner or the  Depository  has provided the Trustee with  sufficient
information  to  transfer  such  Certificate  Owner's  pro rata  portion  of the
Remaining Pooled  Certificates in the book-entry  records of the Federal Reserve
Banks from the Trustee to such Certificate Owner.

     Section 4.02. Registration of Transfer and Exchange of Certificates.

     (a) At all  times  during  the  term  of this  Agreement,  there  shall  be
maintained at the office of a registrar (the "Certificate Registrar") a register
(the "Certificate Register") in which, subject to such reasonable regulations as
the Certificate Registrar may prescribe, the Certificate Registrar shall provide
for  the  registration  of  Certificates  and  of  transfers  and  exchanges  of
Certificates as herein provided.  The Trustee is initially appointed (and hereby
agrees to act in accordance with the terms hereof) as Certificate  Registrar for
the  purpose  of  registering   Certificates  and  transfers  and  exchanges  of
Certificates as herein provided.  For so long as the Trustee acts as Certificate
Registrar,  its  Corporate  Trust  Office  shall  constitute  the offices of the
Certificate  Registrar maintained for such purposes.  The Certificate  Registrar
may appoint, by a written instrument delivered to the Depositor,  any other bank
or  trust  company  in New  York  to act as  Certificate  Registrar  under  such
conditions as the predecessor Certificate Registrar may prescribe, provided that
the predecessor Certificate Registrar shall not be relieved of any of its duties
or  responsibilities  hereunder  by reason of such  appointment.  If the Trustee
resigns or is removed in accordance with the terms hereof, the successor trustee
shall immediately succeed to its predecessor's duties as Certificate  Registrar.
The Depositor  and the Trustee  shall have the right to inspect the  Certificate
Register  or to  obtain a copy  thereof  at all  reasonable  times,  and to rely
conclusively  upon  a  certificate  of  the  Certificate  Registrar  as  to  the
information set forth in the Certificate Register.

     Every  Certificateholder  agrees  with the  Certificate  Registrar  and the
Trustee that neither the  Certificate  Registrar,  nor the Trustee shall be held
accountable by reason of the disclosure of any such  information as to the names
and addresses of the Certificateholders hereunder, regardless of the source from
which such information was derived.

     (b) Subject to the preceding  subsections,  upon surrender for registration
of  transfer of any  Certificate  at the  offices of the  Certificate  Registrar
maintained  for such  purpose,  the Trustee  shall  execute and the  Certificate
Registrar  shall  authenticate  and  deliver,  in the  name  of  the  designated
transferee or  transferees,  one or more new  Certificates  of a like  aggregate
Percentage Interest.

     (c) At the option of any Holder,  its  Certificates  may be  exchanged  for
other  Certificates of authorized  denominations of a like aggregate  Percentage
Interest,  upon surrender of the  Certificates to be exchanged at the offices of
the Certificate Registrar maintained for such purpose. Whenever any Certificates
are so surrendered  for exchange,  the Trustee shall execute and the Certificate
Registrar  shall  authenticate  and deliver the  Certificates  which the Certifi
cateholder making the exchange is entitled to receive.

     (d) Every  Certificate  presented or  surrendered  for transfer or exchange
shall (if so required by the Trustee) be duly endorsed by, or be  accompanied by
a written  instrument of transfer in the form  satisfactory  to the Trustee duly
executed by, the Holder thereof or his attorney duly authorized in writing.

     (e) No  service  charge  shall  be made for any  transfer  or  exchange  of
Certificates,  but the Trustee may require  payment of a sum sufficient to cover
any tax or  governmental  charge  that may be  imposed  in  connection  with any
transfer or exchange of Certificates.

     (f) All  Certificates  surrendered  for  transfer  and  exchange  shall  be
destroyed by the Certificate Registrar without liability on its part.

     Section 4.03. Mutilated, Destroyed, Lost or Stolen Certificates.

     If  (i)  any  mutilated  Certificate  is  surrendered  to  the  Certificate
Registrar,  or the Trustee and the  Certificate  Registrar  receive  evidence to
their  satisfaction of the destruction,  loss or theft of any  Certificate,  and
(ii) (except in the case of a mutilated  Certificate)  there is delivered to the
Trustee and the Certificate  Registrar such agreement,  security or indemnity as
may be required by them to save each of them  harmless,  then, in the absence of
notice to the Trustee or the  Certificate  Registrar that such  Certificate  has
been  acquired  by a bona fide  purchaser,  the  Trustee  shall  execute and the
Certificate Registrar shall authenticate and deliver, in exchange for or in lieu
of any such mutilated,  destroyed, lost or stolen Certificate, a new Certificate
of like tenor and Percentage Interest but bearing a number not contemporaneously
outstanding.  Upon the issuance of any new Certificate  under this Section,  the
Trustee may require the payment by the  Certificateholder of a sum sufficient to
cover any tax or other  governmental  charge  that may be  imposed  in  relation
thereto.  Any  duplicate  Certificate  issued  pursuant  to this  Section  shall
constitute complete and indefeasible evidence of ownership in the Trust Fund, as
if originally issued,  whether or not the lost, stolen or destroyed  Certificate
shall be found at any time.

     Section 4.04. Persons Deemed Owners.

     Prior to due presentment of a Certificate for registration of transfer, the
Depositor,  the  Trustee,  the  Certificate  Registrar  and  any  agent  of  the
Depositor,  the  Trustee or the  Certificate  Registrar  may treat the Person in
whose name any  Certificate is registered as the owner of such  Certificate  for
the purpose of  receiving  distributions  pursuant  to Section  3.05 and for all
other  purposes  whatsoever,   and  neither  the  Depositor,  the  Trustee,  the
Certificate  Registrar  nor any  agent  of the  Depositor,  the  Trustee  or the
Certificate Registrar shall be affected by notice to the contrary.

     Section 4.05. Exchange of Certificates.

     (a)  Beginning  on the  Distribution  Date in April  1998,  any  Holder  or
Certificate Owner holding not less than 10% of the outstanding  principal amount
of the  Certificates  shall have the option to exchange not less than 10% of the
outstanding  principal amount of the Certificates for a pro rata portion of each
of the Pooled Certificates.

     (b)  Holders or  Certificate  Owners may  exercise  the option set forth in
Section  4.05(a)  by  delivering  an  Option  Exercise  Notice  to the  Trustee,
accompanied by the Option Exercise Fee, at least five Business Days prior to the
proposed  Exchange Date, which must be a Business Day. An Option Exercise Notice
may not be revoked  after  delivery  to the  Trustee.  The Trustee may refuse to
accept,  or give effect to, any Option  Exercise  Notice that is  incomplete  or
defective, in its sole judgment, or not accompanied by the Option Exercise Fee.

     (c) The Trustee shall be entitled to charge a fee, as  compensation,  equal
to the greater of (i) $500 and (ii) 0.02% of the outstanding principal amount of
the Certificates to be exchanged for Pooled Certificates.

     (d) On the  Exchange  Date,  the Trustee  shall cause the  transfer of such
Holder's  or  Certificate  Owner's  pro rata  portion  of the  Remaining  Pooled
Certificates  in the  book-entry  records of the Federal  Reserve Banks from the
Trustee to such Holder or Certificate Owner.

<PAGE>
                                    ARTICLE V

                                   THE TRUSTEE


     Section 5.01. Duties of Trustee.

     (a) The Trustee, upon receipt of all resolutions, certificates, statements,
opinions,  reports,  documents,  orders or other  instruments  furnished  to the
Trustee  which  are  specifically  required  to be  furnished  pursuant  to  any
provision of this Agreement, shall examine them to determine whether they are in
the form required by this  Agreement and the  Underlying  Agreements;  provided,
however,  that the Trustee shall not be  responsible  to  determine,  confirm or
recalculate the accuracy or content of any such resolution, certificate or other
instrument furnished to it pursuant to this Agreement.  The Trustee shall notify
the  Certificateholders,  and the Rating Agencies of any such documents which do
not materially  conform to the  requirements of this Agreement in the event that
the Trustee, after so requesting of the party required to deliver the same, does
not receive  satisfactorily  corrected  documents or a satisfactory  explanation
regarding any such nonconformities.

     The Trustee shall forward or cause to be forwarded in a timely  fashion the
notices, reports and statements required to be forwarded by the Trustee pursuant
to Sections 3.01, 3.02, 3.06 and 7.01.

     (b) No  provision  of this  Agreement  shall be  construed  to relieve  the
Trustee from liability for its own negligent  action,  its own negligent failure
to act or its own willful misconduct; provided, however, that:

                    (i) The  duties  and  obligations  of the  Trustee  shall be
               determined  solely by the express  provisions of this  Agreement,
               the Trustee  shall not be liable  except for the  performance  of
               such duties and obligations as are specifically set forth in this
               Agreement, no implied covenants or obligations shall be read into
               this  Agreement  against the  Trustee  and, in the absence of bad
               faith on the part of the  Trustee,  the Trustee may  conclusively
               rely, as to the truth of the  statements  and the  correctness of
               the opinions expressed therein, upon any certificates or opinions
               furnished  by the  Depositor  to the  Trustee  and which on their
               face, do not contradict the requirements of this Agreement;

                    (ii) The Trustee shall not be personally liable for an error
               of  judgment  made in good  faith  by a  Responsible  Officer  or
               Responsible  Officers of the  Trustee,  unless it shall be proved
               that the Trustee was  negligent  in  ascertaining  the  pertinent
               facts;

                    (iii)  The  Trustee  shall  not be  personally  liable  with
               respect to any action  taken,  suffered or omitted to be taken by
               it in  good  faith  in  accordance  with  the  direction  of  the
               Certificate  Insurer  or  the  Majority   Certificateholders   in
               accordance  with the  terms of this  Agreement,  as to the  time,
               method  and place of  conducting  any  proceeding  for any remedy
               available  to the  Trustee,  or  exercising  any  trust  or power
               conferred upon the Trustee, under this Agreement;

                    (iv)  No  provision  in this  Agreement  shall  require  the
               Trustee  to expend or risk its own funds or  otherwise  incur any
               personal  financial  liability in the  performance  of any of its
               duties as Trustee  hereunder,  or in the  exercise  of any of its
               rights or powers,  if the Trustee shall have  reasonable  grounds
               for  believing  that  repayment  of funds or  adequate  indemnity
               against such risk or liability is not  reasonably  assured to it;
               provided that this provision  shall not be deemed to abrogate the
               responsibilities  undertaken by the Trustee  hereunder to perform
               routine  administrative  duties  in  accordance  with  the  terms
               hereof; and

                    (v) The  Trustee  shall not be deemed to have  notice of any
               fact or  circumstance  upon  the  occurrence  of  which it may be
               required to take action hereunder unless a Responsible Officer of
               the  Trustee  has  actual  knowledge  of  such  event,   fact  or
               circumstance  or  unless  written  notice  of any  such  event is
               received by the Trustee at its Corporate Trust Office.

     Section 5.02. Certain Matters Affecting the Trustee

     Except as otherwise provided in Section 5.01:

                    (i) The Trustee may rely and shall be protected in acting or
               refraining   from   acting   upon   any   resolution,   Officers'
               Certificate,  certificate  of auditors or any other  certificate,
               statement, instrument, opinion, report, notice, request, consent,
               order,  appraisal,  bond or other  paper or  document  reasonably
               believed by it to be genuine and to have been signed or presented
               by the proper party or parties;

                    (ii) The Trustee may consult with counsel and any Opinion of
               Counsel shall be full and complete  authorization  and protection
               in  respect  of any  action  taken or  suffered  or omitted by it
               hereunder  in good faith and in  accordance  with such Opinion of
               Counsel;

                    (iii) The Trustee  shall be under no  obligation to exercise
               any of the trusts or powers vested in it by this  Agreement or to
               institute,  conduct  or defend  any  litigation  hereunder  or in
               relation hereto at the request,  order or direction of any of the
               Certificateholders, pursuant to the provisions of this Agreement,
               unless such Certificate holders shall have offered to the Trustee
               reasonable security or indemnity against the costs,  expenses and
               liabilities which may be incurred therein or thereby;

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

                    (v) The  Trustee  shall  not be  personally  liable  for any
               action  taken,  suffered  or  omitted  by it in  good  faith  and
               believed  by it to be  authorized  or within  the  discretion  or
               rights or powers conferred upon it by this Agreement; and

                    (vi) The  Trustee  may  execute  any of the trusts or powers
               hereunder or perform any duties  hereunder  either directly or by
               or through  agents or  attorneys  and shall not be liable for the
               default or misconduct of any such agents or attorneys if selected
               with reasonable care.

     Section 5.03. Trustee Not Liable for Certificates or Pooled Certificates.

     The  recitals  contained  herein and in the  Certificates  (other  than the
statements attributed to, and the representations and warranties of, the Trustee
in Article II and the  signature  of the Trustee on each  Certificate)  shall be
taken  as  the  statements  of  the  Depositor,   and  the  Trustee  assumes  no
responsibility for their correctness. The Trustee makes no representations as to
the validity or sufficiency of this Agreement  (other than as  specifically  set
forth  in  Section  2.03(b))  or  of  the  Certificates  (other  than  that  the
Certificates   shall  be  duly  and  validly  executed  by  it  as  Trustee  and
authenticated by it as Certificate  Registrar) or of the Pooled  Certificates or
any related document. Except as otherwise provided herein, the Trustee shall not
be  accountable  for  the  use or  application  by the  Depositor  of any of the
Certificates  or of  the  proceeds  of  such  Certificates,  or for  the  use or
application  of any funds paid to the Depositor in respect of the assignment and
delivery of the Pooled Certificates.

     Section 5.04. Trustee May Own Certificates.

     The Trustee in its individual or any other capacity may become the owner or
pledgee  of  Certificates  with the  same  rights  it would  have if it were not
Trustee.

     Section 5.05. Trustee's Fees; Indemnification of the Trustee.

     (a) The Trustee shall withdraw the Trustee Fee, as  compensation,  from the
Certificate  Account,  and to the  extent  necessary,  the  Trustee  Fee  Escrow
Account, as provided in Sections 3.03(c) and 3.05 hereof.

     (b)  Subject to the  provisions  of this  paragraph,  the  Trustee  and any
director,  officer,  employee  or agent of the  Trustee  shall be entitled to be
indemnified  and held  harmless  by the Trust  against  any loss,  liability  or
expense (including, without limitation, costs and expenses of litigation, and of
investigation,  counsel fees and expenses, damages,  judgments,  amounts paid in
settlement and out-of-pocket expenses) arising out of, or incurred in connection
with,  the  exercise  and  performance  of any of the  powers  and duties of the
Trustee hereunder;  provided that neither the Trustee nor any of the other above
specified Persons shall be entitled to indemnification  pursuant to this Section
5.05(b) for (i) allocable overhead,  (ii) expenses or disbursements  incurred or
made by or on behalf  of the  Trustee  in the  normal  course  of the  Trustee's
performing  routine   administrative  duties  in  accordance  with  any  of  the
provisions hereof,  (iii) any expense or liability  specifically  required to be
borne  thereby  pursuant to the terms  hereof,  or (iv) any loss,  liability  or
expense  incurred by reason of willful  misfeasance,  bad faith or negligence in
the performance of the Trustee's obligations and duties hereunder,  or by reason
of reckless  disregard  of such  obligations  or duties,  or as may arise from a
breach of any representation, warranty or covenant of the Trustee made herein.

     If any such loss,  liability or expense is incurred in connection  with any
action or proceeding threatened, pending or instituted, whether civil, criminal,
administrative,  arbitrative or nvestigative, against an indemnified person, the
amount  shall be paid by the  Depositor  unless the  Depositor  (i)  assumes the
defense of the indemnified  person with counsel  reasonably  satisfactory to the
Trustee and pays any such loss, liability or expense in connection therewith, or
(ii) makes other arrangements  satisfactory to the Trustee.  Upon notice of such
action or  proceeding,  the Trustee  promptly  shall notify the Depositor of the
action or proceeding and the Depositor promptly shall notify the Trustee whether
or not it  elects  the  alternative  in  clause  (i) or  (ii)  of the  preceding
sentence.  If any such loss,  liability or expense is not incurred in connection
with any such action or proceeding, the amount shall be paid by the Depositor.

     The  provisions of this Section  5.05(b) shall survive any  resignation  or
removal of the Trustee and appointment of a successor trustee.

     Section 5.06. Eligibility Requirements for Trustee .

     The  Trustee  hereunder  shall at all times be a trust  company  or banking
institution  organized and doing business under the laws of the United States of
America or any State thereof,  authorized under such laws to exercise  corporate
trust powers,  having a combined  capital,  surplus and undivided  profits of at
least  $50,000,000 (or shall be a member of a bank holding system,  the combined
capital and surplus of which is at least $50,000,000) and subject to supervision
or examination by federal or state  authority.  If such trust company or banking
institution publishes reports of condition at least annually, pursuant to law or
to the requirements of the aforesaid  supervising or examining  authority,  then
for the  purposes of this Section the combined  capital,  surplus and  undivided
profits of such trust company or banking  institution  shall be deemed to be its
combined capital and surplus as set forth in its most recent report of condition
so published.  The Trustee shall at all times meet the  requirements  of Section
26(a)(1) of the Investment  Company Act and shall in no event be an Affiliate of
the Depositor or of any Person involved in the  organization or operation of the
Depositor.  In case at any time  the  Trustee  shall  cease  to be  eligible  in
accordance  with the  provisions  of this  Section,  the  Trustee  shall  resign
immediately in the manner and with the effect specified in Section 5.07.

     Section 5.07. Resignation and Removal of the Trustee.

     (a) The Trustee may upon 30 days' notice resign and be discharged  from the
trusts hereby  created by giving written notice thereof to the Depositor and the
Certificateholders.  Upon  receiving such notice of  resignation,  the Depositor
shall promptly appoint a successor trustee by written instrument,  in duplicate,
one copy of which instrument shall be delivered to the resigning Trustee and one
copy to the  successor  trustee.  If no  successor  trustee  shall  have been so
appointed and have accepted  appointment within 30 days after the giving of such
notice of resignation, the resigning Trustee may petition any court of competent
jurisdiction for the appointment of a successor trustee.

     (b) If at any time the Trustee  shall  cease to be  eligible in  accordance
with the  provisions  of  Section  5.06 and shall fail to resign  after  written
request therefor by the Depositor or the Majority  Certificateholders,  or if at
any time the Trustee  shall  become  incapable  of acting,  or shall be adjudged
bankrupt or insolvent,  or a receiver of the Trustee or of its property shall be
appointed,  or any public officer shall take charge or control of the Trustee or
of its property or affairs for the purpose of  rehabilitation,  conservation  or
liquidation,  then the  Depositor may remove the Trustee and appoint a successor
trustee by written instrument,  in duplicate, one copy of which instrument shall
be delivered to the Trustee so removed and one copy to the successor trustee.

     (c)  Majority  Certificateholders  may at any time  remove the  Trustee and
appoint a successor trustee by written instrument or instruments, in triplicate,
signed by such Holders or their attorneys-in-fact duly authorized,  one complete
set of which instruments  shall be delivered to the Depositor,  one complete set
to the Trustee so removed and one complete set to the successor so appointed.  A
copy of such  instrument  shall be  delivered to the  Certificateholders  by the
Depositor.   All  reasonable   out-of-pocket  costs  and  expenses  incurred  in
connection with such removal and replacement of the Trustee,  including  without
limitation,  reasonable attorneys fees and expenses, shall be borne by the party
requesting such action.

     (d)  Notwithstanding  anything to the contrary  contained  herein,  (i) any
resignation  or removal of the Trustee and  appointment  of a successor  trustee
pursuant to any of the  provisions of this Section shall become  effective  only
upon  acceptance of appointment by the successor  trustee as provided in Section
5.08  and  (ii) no  entity  may be  appointed  as a  successor  trustee  if such
appointment  would result in a  withdrawal  or  downgrading  of any then current
rating assigned to the Certificates by a Rating Agency.

     Section 5.08. Successor Trustee.

     (a) Any  successor  trustee  appointed  as provided  in Section  5.07 shall
execute, acknowledge and deliver to the Depositor, the Certificateholders and to
its predecessor trustee an instrument accepting such appointment hereunder,  and
thereupon the  resignation  or removal of the  predecessor  trustee shall become
effective and the appointment of such successor  trustee shall become  effective
and such successor trustee,  without any further act, deed or conveyance,  shall
become fully vested with all the rights,  powers,  duties and obligations of its
predecessor  hereunder,  with the like effect as if originally  named as trustee
herein.  The  predecessor  trustee shall  deliver to the  successor  trustee the
Pooled  Certificates and related  documents and statements held by it hereunder,
and the  Depositor,  the Trustee and the  predecessor  trustee shall execute and
deliver  such  instruments  and do such other things as may be required for more
fully and certainly  vesting and  confirming  in the successor  trustee all such
rights, powers, duties and obligations.

     (b) No  successor  trustee  shall  accept  appointment  as provided in this
Section unless at the time of such  acceptance  such successor  trustee shall be
eligible under the provisions of Section 5.06.

     (c) Upon  acceptance of appointment  by a successor  trustee as provided in
this Section,  the Depositor shall mail notice of the succession of such trustee
hereunder  to  all  Certificateholders  at  their  addresses  as  shown  in  the
Certificate  Register. If the Depositor fails to mail such notice within 10 days
after acceptance of appointment by the successor trustee,  the successor trustee
shall cause such notice to be mailed at the expense of the Depositor.

     Section 5.09. Merger or Consolidation of Trustee.

     Any trust  company or banking  institution  into which the  Trustee  may be
merged or converted or with which it may be consolidated or any trust company or
banking  institution  resulting from any merger,  conversion or consolidation to
which the Trustee shall be a party, or any trust company or banking  institution
succeeding to all or  substantially  all of the corporate  trust business of the
Trustee,  shall be the successor of the Trustee  hereunder,  provided such trust
company or banking institution shall be eligible under the provisions of Section
5.06,  without  the  execution  or filing of any paper or any further act on the
part  of  any  of  the  parties   hereto,   anything   herein  to  the  contrary
notwithstanding.   The  Trustee   shall  mail  notice  of  any  such  merger  or
consolidation to the Depositor and to the Certificateholders at their address as
shown in the Certificate Register.

     Section 5.10. Appointment of Co-Trustee or Separate Trustee.

     (a)  Notwithstanding  any other  provisions  hereof,  at any time,  for the
purpose of meeting any legal  requirements of any jurisdiction in which any part
of the Trust Fund or property securing the same may at the time be located,  the
Trustee  shall have the power and shall execute and deliver all  instruments  to
appoint one or more  Persons  approved by the  Trustee to act as  co-trustee  or
co-trustees, jointly with the Trustee, or separate trustee or separate trustees,
of all or any part of the Trust Fund, and to vest in such Person or Persons,  in
such capacity,  such title to the Trust Fund, or any part thereof,  and, subject
to the other provisions of this Section 5.10, such powers, duties,  obligations,
rights and  trusts as the  Trustee  may  consider  necessary  or  desirable.  No
co-trustee or separate trustee  hereunder shall be required to meet the terms of
eligibility as a successor trustee under Section 5.06 hereunder;  provided, that
if the co-trustee or separate trustee does not meet such eligibility  standards,
the Trustee  shall  remain  liable for its actions  hereunder,  and no notice to
Certificateholders  of the appointment of co-trustee(s)  or separate  trustee(s)
shall be required under Section 5.08 hereof.

     (b) In the case of any  appointment  of a  co-trustee  or separate  trustee
pursuant  to this  Section  5.10 all  rights,  powers,  duties  and  obligations
conferred  or imposed  upon the Trustee  shall be  conferred or imposed upon and
exercised  or  performed  jointly by the  Trustee and such  separate  trustee or
co-trustee, except to the extent that under any law of any jurisdiction in which
any particular act or acts are to be performed, the Trustee shall be incompetent
or unqualified to perform such act or acts, in which event such rights,  powers,
duties and obligations  (including the holding of title to the Trust Fund or any
portion  thereof in any such  jurisdiction)  shall be exercised and performed by
such separate trustee or co-trustee at the direction of the Trustee.

     (c) Any notice,  request or other  writing  given to the  Trustee  shall be
deemed to have been given to each of the then separate trustees and co-trustees,
as  effectively  as if given to each of them.  Every  instrument  appointing any
separate  trustee or co-trustee shall refer to this Agreement and the conditions
of this Article V. Each separate trustee and co-trustee,  upon its acceptance of
the trusts conferred,  shall be vested with the estates or property specified in
its instrument of appointment, either jointly with the Trustee or separately, as
may be  provided  therein,  subject  to all the  provisions  of this  Agreement,
specifically including every provision of this Agreement relating to the conduct
of, affecting the liability of, or affording  protection to, the Trustee.  Every
such instrument shall be filed with the Trustee.

     (d) Any separate  trustee or co-trustee  may, at any time,  constitute  the
Trustee its agent or  attorney-in-fact,  with full power and  authority,  to the
extent not  prohibited  by law, to do any lawful act under or in respect of this
Agreement on its behalf and in its name.  If any separate  trustee or co-trustee
shall die, become incapable of acting, resign or be removed, all of its estates,
properties,  rights,  remedies  and trusts shall vest in and be exercised by the
Trustee,  to the extent  permitted by law,  without the  appointment of a new or
successor trustee.

<PAGE>
                                   ARTICLE VI

                                  THE DEPOSITOR


     Section 6.01. Liability of the Depositor.

     The Depositor shall be liable in accordance  herewith only to the extent of
the  respective  obligations  specifically  imposed upon and  undertaken  by the
Depositor herein.

     Section 6.02. Merger, Consolidation or Conversion of the Depositor.

     Subject to the following paragraph,  the Depositor will keep in full effect
its  existence,  rights and  franchises as a  corporation  under the laws of the
jurisdiction   of  its   incorporation,   and  will  obtain  and   preserve  its
qualification  to do business as a foreign corpora tion in each  jurisdiction in
which such  qualification  is or shall be  necessary to protect the validity and
enforceability  of this Agreement and the Certificates and to perform its duties
under this Agreement.

     The Depositor  may be merged or  consolidated  with or into any Person,  or
transfer all or substantially all of its assets to any Person, in which case any
Person  resulting from any merger or  consolidation to which the Depositor shall
be a party, or any Person succeeding to the business of the Depositor,  shall be
the successor of the Depositor hereunder, without the execution or filing of any
paper or any  further act on the part of any of the  parties  hereto,  any thing
herein to the contrary notwithstanding.

     Section 6.03. Limitation on Liability of the Depositor and Others.

     Neither the  Depositor  nor any of the  directors,  officers,  employees or
agents of the  Depositor  shall be under any  liability to the Trust Fund or the
Certificateholders 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;
provided,  however,  that this provision  shall not protect the Depositor or any
such other  Person  against  any breach of a  representation  or  warranty  made
herein,  or against any expense or liability  specifically  required to be borne
thereby  pursuant  to the terms  hereof,  or against any  liability  which would
otherwise be imposed by reason of willful  misfeasance,  bad faith or negligence
in the performance of obligations or duties hereunder,  or by reason of reckless
disregard  of such  obligations  and duties.  The  Depositor  and any  director,
officer,  employee  or agent  of the  Depositor  may  rely in good  faith on any
document of any kind which,  prima facie, is properly  executed and submitted by
any Person respecting any matters arising  hereunder.  Provided that such action
is  not  related  to  its  representations  made  in or its  duties  under  this
Agreement,  the  Depositor  shall not be under  any  obligation  to  appear  in,
prosecute or defend any action or  proceeding  unless such action in its opinion
does not involve it in any expense or liability.
<PAGE>
                                   ARTICLE VII

                                   TERMINATION


     Section 7.01. Termination.

     (a) The respective  obligations and  responsibilities  of the Depositor and
the Trustee  created  hereby with  respect to the  Certificates  (other than the
obligation   to  make  certain   payments   and  to  send  certain   notices  to
Certificateholders as hereinafter set forth) shall terminate upon the earlier of
(i)  the  repurchase  by or at the  direction  of the  Depositor  of all  Pooled
Certificates at the Repurchase Price therefor as of the date of such repurchase;
or (ii) the payment (or provision for payment) to the  Certificateholders of all
amounts  held by or on behalf of the  Trustee  and  required  to be paid to them
hereunder  on the  Final  Distribution  Date  following  receipt  of  the  final
distribution to be made on the Pooled  Certificates;  or (iii) the  Distribution
Date following the first  Distribution Date on which the principal balance of or
notional  principal  balance of all but one of the Pooled  Certificates has been
reduced to zero and, in the case of the Pooled FNMA  93-246/F  Certificates,  if
the principal balance of such Pooled FNMA 93-246/F Certificates has been reduced
to zero, no further amount is payable in respect of any Interest  Deficiency and
interest  thereon  in  accordance  with the  terms of the  Underlying  Agreement
pursuant to which the Pooled FNMA 93-246/F  Certificates were issued;  provided,
however,  that in no event shall the trust created  hereby  continue  beyond the
expiration  of  twenty-one  years  from the  death of the last  survivor  of the
descendants  of Joseph P. Kennedy,  the late  ambassador of the United States to
the Court of St. James's,  living on the date hereof. The right of the Depositor
or its  designee  to  repurchase  all Pooled  Certificates  pursuant  to Section
7.01(a)(i)  shall be  exercisable  only if the aggregate  outstanding  principal
balance of such Pooled Certificates of the time of any such repurchase is 10% or
less than their outstanding principal balance on the Closing Date.

     (b) The Trustee shall,  in accordance  with Section 8.05,  give a Notice of
Final  Distribution  to the  Certificateholders,  the  Depositor  and the Rating
Agencies as soon as  practicable of the  Distribution  Date on which the Trustee
anticipates that the final distribution will be made on the Certificates,  which
notice shall:

                    (i)  specify  the  Distribution  Date  on  which  the  final
               distribution is anticipated to be made to Certificateholders;

                    (ii) specify the amount of any such final  distribution,  if
               known; and

                    (iii)    state    that    the    final    distribution    to
               Certificateholders   will  be  made  only  upon  presentment  and
               surrender of  Certificates  at the office of the Trustee  therein
               specified.

If the Trust Fund is not terminated on the  anticipated  Distribution  Date
for  any  reason,  the  Trustee  shall  promptly  mail  notice  thereof  to each
Certificateholder, the Depositor and to the Rating Agencies.

     (c)  Upon   presentment   and   surrender  of  the   Certificates   by  the
Certificateholders  on the Final Distribution Date, the Trustee shall distribute
to  the   Certificateholders   the  amounts  otherwise   distributable  on  such
Distribution Date pursuant to Section 3.05(a).  Any funds not distributed on the
Final  Distribution  Date  because of the failure of any  Certificateholders  to
tender their  Certificates  shall be set aside and held in trust for the account
of the appropriate  non-tendering  Certificateholders,  whereupon the Trust Fund
shall terminate.  If any  Certificates as to which Notice of Final  Distribution
has been given pursuant to this Section 7.01 shall not have been surrendered for
cancellation  within six months after the time  specified  in such  notice,  the
Trustee shall mail a second notice to the remaining Certificateholders, at their
last  addresses   shown  in  the  Certificate   Register,   to  surrender  their
Certificates  for  cancellation  in order to receive,  from such funds held, the
final  distribution  with respect  thereto.  If within one year after the second
notice any Certificate  shall not have been  surrendered for  cancellation,  the
Trustee shall directly or through an agent, take reasonable steps to contact the
remaining  Certificateholders  concerning  surrender of their Certificates.  The
costs   and   expenses   of   maintaining   such   funds   and   of   contacting
Certificateholders  shall be paid out of the assets which remain held. If within
two  years  after  the  second  notice  any  Certificates  shall  not have  been
surrendered   for   cancellation,   the  Trustee  shall  segregate  all  amounts
distributable  to the Holders thereof and shall thereafter hold such amounts for
the  benefit of such  Holders.  No  interest  shall  accrue or be payable to any
Certificateholder  on any  amount  held as a result of such  Certificateholder's
failure to surrender its  Certificate(s) for final payment thereof in accordance
with this Section 7.01.

     (d) If the option by the Depositor to repurchase or cause the repurchase of
all  Pooled  Certificates  under  Section  7.01(a)(i)  above is  exercised,  the
Depositor and/or its designee shall deposit in the Certificate Account, by 10:00
a.m., New York City time, on the applicable  Distribution  Date, an amount equal
to the  Repurchase  Price for the Pooled  Certificates  being  purchased  by the
Depositor. Upon the presentation and surrender of the Certificates, the Trustee,
as paying agent,  shall distribute the Repurchase Price as follows to the extent
of such amount:

                    first, to pay the Trustee Fee to the Trustee;

                    second,   the   amount   otherwise   distributable   to  the
               Certificateholders   on  such  Distribution  Date  but  for  such
               repurchase;

                    third,  to  the   Certificateholders   as  distributions  of
               interest, the interest portion included in the Repurchase Price;

                    fourth,  to  the   Certificateholders  as  distributions  of
               principal,  the  principal  portion  included  in the  Repurchase
               Price, up to the outstanding Class A-1 Balance; and

                    fifth,  to the  extent  of the  balance,  if  any,  of  such
               Repurchase Price still remaining,  to the  Certificateholders  as
               additional distributions of interest.

Upon deposit of the required  Repurchase  Price and delivery to the Trustee
of an Officer's  Certificate from the Depositor  certifying that such deposit of
the Repurchase  Price in the Certificate  Account has been made,  following such
final  Distribution  Date, the Trustee shall  promptly  release to the Depositor
and/or  its  designee,  the  Pooled  Certificates,   subject  to  the  Trustee's
obligation to hold any amounts  payable to  Certificateholders  in trust without
interest pending final distributions pursuant to Section 7.01(c).

<PAGE>
                                  ARTICLE VIII

                            MISCELLANEOUS PROVISIONS


     Section 8.01. Amendment.

     (a) This  Agreement  may be amended from time to time by the  Depositor and
the Trustee, without the prior consent of any Certificateholder:

                    (i) to cure any ambiguity;

                    (ii) to correct or supplement any provisions  herein,  which
               may be inconsistent with any other provisions herein;

                    (iii) to make any other  provisions  with respect to matters
               or  questions  arising  under this  Agreement  which shall not be
               materially  inconsistent  with the  existing  provisions  of this
               Agreement; and

                    (iv) to  make  such  modifications  as may be  permitted  or
               required   hereunder  in   connection   with  a   repurchase   or
               substitution of a Pooled Certificate  pursuant to Section 2.03(c)
               or 2.04 hereof.

provided  that such  amendment  shall not,  as  evidenced  by an Opinion of
Counsel  delivered to the Trustee (the expense of which shall be paid for by the
Depositor),  adversely  affect in any  material  respect  the  interests  of any
Certificateholder.

     (b) This  Agreement  may also be amended from time to time by the Depositor
and  the   Trustee   with   the   prior   written   consent   of  the   Majority
Certificateholders  for the purpose of adding any  provisions  to or changing in
any  manner  or  eliminating  any of the  provisions  of  this  Agreement  or of
modifying in any manner the rights of the Certificateholders; provided, however,
that no such amendment shall:

                    (i)  reduce in any manner the amount of, or delay the timing
               of,  payments  which  are  required  to  be  distributed  on  any
               Certificate   without   the   consent   of  the  Holder  of  such
               Certificate;

                    (ii) modify the  provisions of this Section 8.01 without the
               consent of the Holders of all Certificates; or

                    (iii) be made  unless  and  until  the  Trustee  shall  have
               received  an  Opinion  of  Counsel  (at the  expense of the party
               seeking  such  amendment  but in no event at the  expense  of the
               Trust Fund) to the effect that such amendment shall not adversely
               affect  the  status of the Trust as a grantor  trust for  federal
               income tax purposes.

     (c) Promptly  after the  execution of any such  amendment the Trustee shall
furnish  written  notification  of the  substance  of  such  amendment  to  each
Certificateholder.   It   shall   not  be   necessary   for   the   consent   of
Certificateholders under this Section 8.01 to approve the particular form of any
proposed amendment, but it shall be sufficient if such consent shall approve the
substance  thereof.  The manner of obtaining such consents and of evidencing the
authorization of the execution thereof by Certificateholders shall be subject to
such reasonable regulations as the Trustee may prescribe.

     Section 8.02. Counterparts.

     This   Agreement   may  be  executed   simultaneously   in  any  number  of
counterparts,  each of which counterparts shall be deemed to be an original, and
such counterparts shall constitute but one and the same instrument.

     Section 8.03. Limitation on Rights of Certificateholders.

     (a) The death or incapacity of any  Certificateholder  shall not operate to
terminate this Agreement or the Trust Fund, nor entitle such Certificateholder's
legal  representa tives or heirs to claim an accounting or to take any action or
proceeding  in any court for a partition  or winding up of the Trust  Fund,  nor
otherwise  affect the rights,  obligations and liabilities of the parties hereto
or any of them.

     (b) No Certificateholder  shall have any right to vote (except as expressly
provided  for  herein) or in any manner  otherwise  control  the  operation  and
management  of the Trust Fund, or the  obligations  of the parties  hereto,  nor
shall anything herein set forth, or contained in the terms of the  Certificates,
be construed so as to  constitute  the  Certificateholders  from time to time as
partners or members of an association;  nor shall any Certificateholder be under
any liability to any third party by reason of any action taken by the parties to
this Agreement pursuant to any provision hereof.

     (c) No Certificateholder shall have any right by virtue of any provision of
this  Agreement to institute any suit,  action or proceeding in equity or at law
upon or under or with respect to this Agreement,  unless such Holder  previously
shall have given to the  Trustee and the  Depositor a written  notice of default
hereunder, and of the continuance thereof, as herein-before provided, and unless
also the Majority  Certificateholders  shall have made written  request upon the
Trustee to institute such action,  suit or proceeding in its own name as Trustee
hereunder and shall have offered to the Trustee such reasonable  indemnity as it
may require against the costs,  expenses and liabilities to be incurred  therein
or  thereby,  and the  Trustee,  for 30 days after its  receipt of such  notice,
request and offer of indemnity, shall have neglected or refused to institute any
such action,  suit or proceeding.  For the  prosecution  and  enforcement of the
rights  granted under this  Section,  each and every  Certificateholder  and the
Trustee  shall be entitled  to such  relief as can be given  either at law or in
equity.

     Section 8.04. Governing Law.

     This Agreement and the  Certificates  shall be construed in accordance with
the laws of the  State  of New  York  applicable  to  agreements  made and to be
performed in said state (without reference to the conflicts of law provisions of
such state),  and the obligations,  rights and remedies of the parties hereunder
and the Certificateholders shall be determined in accordance with such laws.

     Section 8.05. Notices.

     All communications  provided for or permitted hereunder shall be in writing
and shall be deemed to have been duly given when  delivered  to: (a) in the case
of the Depositor,  Bear Stearns Structured Securities Inc., 245 Park Avenue, New
York, New York 10167, or such other address as may hereafter be furnished to the
Trustee in writing by the Depositor; (b) in the case of the Trustee, First Trust
National   Association  180  East  Fifth  Street,  St.  Paul,  Minnesota  55101,
Attention:  Structured  Finance,  or such  other  address  as may  hereafter  be
furnished  to the  Depositor  in  writing  by the  Trustee;  (c) in the  case of
Moody's,  Moody's Investors Service,  Inc., 99 Church Street, New York, New York
10007, Attention: Mortgage Pass-Through Monitoring Group; and (d) in the case of
Fitch Investors Service, L.P., One State Street Plaza, 34th Floor, New York, New
York 10004.

     Section 8.06. Severability of Provisions.

     If any one or more of the  covenants,  agreements,  provisions  or terms of
this  Agreement  shall be for any  reason  whatsoever  held  invalid,  then such
covenants,  agreements,  provisions or terms shall be deemed  severable from the
remaining covenants, agreements, provisions or terms of this Agreement and shall
in no way affect the validity or  enforceability of the other provisions of this
Agreement or of the Certificates or the rights of the Holders thereof.

     Section 8.07. Successors and Assigns.

     The  provisions  of this  Agreement  shall be binding upon and inure to the
benefit of the respective  successors and assigns of the parties hereto, and all
such provisions shall inure to the benefit of the Certificateholders.

     Section 8.08. Article and Section Headings.

     The article and section  headings  herein are for  convenience of reference
only, and shall not limit or otherwise affect the meaning hereof.

     Section 8.09. Notices to Rating Agencies.

     The Trustee shall notify each Rating Agency at such time as it is otherwise
required  pursuant to this  Agreement to give notice of the occurrence of any of
the events described in clauses (a), (b), (d), or (f) below or provide a copy to
each Rating Agency at such time as otherwise  required to be delivered  pursuant
to this  Agreement  of each of the  statements  described in clauses (c) and (e)
below:

     (a) a material change or amendment to this Agreement,

     (b) the  termination or  appointment of a successor  Trustee or a change in
the majority ownership of the Trustee,

     (c) the monthly  distribution  statement  required to be  delivered  to the
Certificateholders pursuant to Section 3.06,

     (d) the non-conformance of any documents pursuant to Section 5.01(a),

     (e) the Notice of Final  Distribution  required to be delivered pursuant to
Section 7.01(b), and

     (f) a change in the location of the Certificate  Account or the Trustee Fee
Escrow Account.

     The  Depositor  shall  notify  each  Rating  Agency  of any  change  in its
identity.


<PAGE>

     IN WITNESS WHEREOF,  the Depositor and the Trustee have caused their names
to be signed hereto by their respective duly authorized officers,  all as of the
day and year first above written.

                                       BEAR STEARNS MORTGAGE SECURITIES
                                       INC., as Depositor


                                       By:/S/ Sara M. Bonesteel
                                       Name:  Sara M. Bonesteel
                                       Title: Vice President


                                       FIRST TRUST NATIONAL ASSOCIATION, as
                                       Trustee


                                       By: /S/ S. Christopherson
                                       Name:  S. Christopherson
                                       Title: Vice President

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

     On the ___ day of March,  1997  before me, a notary  public in and for said
State,   personally   appeared   __________________   known  to  me  to  be  the
_____________  of Bear Stearns  Mortgage  Securities  Inc., the corporation that
executed  the  within  instrument,  and also  known to me to be the  person  who
executed  it on behalf of said  corporation,  and  acknowledged  to me that such
corporation executed the within instrument.

     IN WITNESS  WHEREOF,  I have  hereunto  set my hand and affixed my official
seal the day and year in this certificate first above written.

                                           /S/ Maria K. Montgomery
                                           Notary Public

[Notarial Seal]                            Commission Expires:

<PAGE>
STATE OF MINNESOTA)
                  :   ss:
COUNTY OF RAMSEY  )


     On the ___ day of March,  1997  before me, a notary  public in and for said
State, personally appeared  _________________ known to me to be a ______________
of First Trust  National  Association,  the national  banking  association  that
executed  the  within  instrument,  and also  known to me to be the  person  who
executed it on behalf of said national banking association,  and acknowledged to
me that such national banking association executed the within instrument.

     IN WITNESS  WHEREOF,  I have  hereunto  set my hand and affixed my official
seal the day and year in this certificate first above written.

                                           /S/ B. Schwintek
                                           Notary Public

[Notarial Seal]                            Commission Expires:


<PAGE>

                                    EXHIBIT A

                          FORM OF CLASS A-1 CERTIFICATE


<PAGE>

                                    EXHIBIT B

                         FORM OF OPTION EXERCISE NOTICE


Date:

First Trust National Association
First Trust Center
180 East Fifth Street
Saint Paul, MN  55101

Re:      Bear Stearns Mortgage Securities Inc.
         Pass-Through Certificates
         Series 1997-3 CUSIP No.:

Ladies and Gentlemen:

     Reference  is made to the  Pooling  Agreement  dated as of  March  1,  1997
between  Bear  Stearns  Mortgage  Securities  Inc.,  Depositor,  and First Trust
National Association, Trustee, (the "Agreement"). Terms defined in the Agreement
shall have the same meaning when used herein, except as otherwise provided.

     The undersigned desires to exchange Certificates for Pooled Certificates as
provided  in  Section  4.05 of the  Agreement.  Set forth  below is  information
pertinent to the exchange:

Original Principal Amount of Certificates:                    $

Principal Amount of Certificates Exchanged:                   $

Participant Number in The Depository Trust
Company:

Federal Reserve Bank Delivery Instructions:

Proposed Exchange Date:



     [Accompanying  this letter is a certified check in the amount of the Option
Exercise Fee.]

     [The  Option  Exercise  Fee will be paid by wire  transfer  of  immediately
available  funds to the  amount of the  Trustee  at not later  than the close of
business on the date hereof.]

     A copy of this letter will be delivered to The Depository Trust Company not
later than the close of business on the date hereof.

     The   undersigned   understands   that  this  Option   Exercise  Notice  is
irrevocable.

Very truly yours,

[Name]

By:_________________________________
Title:______________________________

Signature Guaranteed:

<PAGE>
                                   SCHEDULE A

                               POOLED CERTIFICATES

<TABLE>
<CAPTION>

<S>                                                           <C>                  <C>

                                                                                   Current Principal or
                                                                                   Notional Principal
Full Name of Series                                           Class % In Trust           Balance

Pooled FNMA Certificates
   Guaranteed REMIC Pass-Through Certificates,                    35.29412%            $7,893,773.25
   Fannie Mae REMIC Trust 1992-45, Class 45-Z

   Stripped Mortgage Backed Securities                             0.30380%            $4,314,175.49(1)
   Trust Number 000252-CL, Class 2

   Guaranteed REMIC Pass-Through Certificates,                    48.89887%            $38,190,966.96
   Fannie Mae REMIC Trust, 1993-246, Class F

   Guaranteed REMIC Pass-Through Certificates,                    13.95868%            $2,809,532.40
   Fannie Mae REMIC Trust, 1997-G2, Class Z

Pooled FHLMC Certificates

   Multiclass Mortgage Securities, Series 6003,                   42.45283%            $958,958.28
   Class SA

   Multiclass Mortgage Participation Certificates,                23.60248%            $2,280,000.00
   Series 1505, Class QB

   Multiclass Mortgage Participation Certificates                 36.37387%            $2,104,652.70
   Series 1603, Class SB

   Multiclass Mortgage Participation Certificates,                20.53333%            $434,469.90
   Series 1723, Class SB

   Multiclass Mortgage Participation Certificates,                47.05265%            $10,548,406.00(1)
   Series 1869, Class TG

   Multiclass Mortgage Participation Certificates,               100.00000%            $43,803,028.74(1)
   Series 1933, Class SA

   Modifiable and Combinable REMIC                                10.44466%            $21,927,727.80(1)
   Certificates,
   Series 1933, Class SG
</TABLE>



_________________________

(1)   Notional Principal Amount



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