AETNA LIFE & CASUALTY CO
S-3, 1996-06-28
LIFE INSURANCE
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<PAGE>   1
 
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 28, 1996
                                                     REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
<TABLE>
<S>                                                  <C>
                     AETNA INC.                                 AETNA LIFE AND CASUALTY COMPANY
    (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS        (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS
                       CHARTER)                                            CHARTER)
                     CONNECTICUT                                          CONNECTICUT
           (STATE OR OTHER JURISDICTION OF                      (STATE OR OTHER JURISDICTION OF
           INCORPORATION OR ORGANIZATION)                       INCORPORATION OR ORGANIZATION)
                     02-0488491                                           06-0843808
        (I.R.S. EMPLOYER IDENTIFICATION NO.)                 (I.R.S. EMPLOYER IDENTIFICATION NO.)
                  LUCILLE NICKERSON                                    LUCILLE NICKERSON
       VICE PRESIDENT AND CORPORATE SECRETARY               VICE PRESIDENT AND CORPORATE SECRETARY
                     AETNA INC.                                 AETNA LIFE AND CASUALTY COMPANY
                151 FARMINGTON AVENUE                                151 FARMINGTON AVENUE
             HARTFORD, CONNECTICUT 06156                          HARTFORD, CONNECTICUT 06156
                   (860) 273-0123                                       (860) 273-0123
     (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE          (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE
    NUMBER, INCLUDING AREA CODE, OF REGISTRANT'S         NUMBER, INCLUDING AREA CODE, OF REGISTRANT'S
 PRINCIPAL EXECUTIVE OFFICES AND AGENT FOR SERVICE)   PRINCIPAL EXECUTIVE OFFICES AND AGENT FOR SERVICE)
</TABLE>
 
                            ------------------------
                           COPY OF CORRESPONDENCE TO:
 
<TABLE>
<S>                                 <C>                                 <C>
         William J. Casazza                  Robert S. Risoleo                   Richard J. Sandler
  Aetna Life and Casualty Company           Sullivan & Cromwell                Davis Polk & Wardwell
       151 Farmington Avenue                  125 Broad Street                  450 Lexington Avenue
    Hartford, Connecticut 06156           New York, New York 10004            New York, New York 10017
           (860) 273-0123                      (212) 558-4000                      (212) 450-4000
</TABLE>
 
                            ------------------------
 
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: From time
to time after this Registration Statement becomes effective.
 
     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, check the following
box: / /
 
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box: /X/
 
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. / /
 
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. / /
 
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. / /
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<S>                                        <C>                   <C>                   <C>                   <C>
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- ----------------------------------------------------------------------------------------------------------------------------------
                                                                        PROPOSED              PROPOSED
TITLE OF EACH CLASS OF                           AMOUNT TO          MAXIMUM OFFERING     MAXIMUM AGGREGATE         AMOUNT OF
SECURITIES TO BE REGISTERED                   BE REGISTERED(1)     PRICE PER UNIT(2)     OFFERING PRICE(2)     REGISTRATION FEE
- ----------------------------------------------------------------------------------------------------------------------------------
Debt Securities of Aetna Life and Casualty
  Company..................................   $1,450,000,000(4)           100%           $1,450,000,000(4)         $500,000
Guarantees of Debt Securities by Aetna
  Inc.(3)..................................
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- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
(1) In United States dollars or the equivalent thereof in any other currency,
    currency unit or units, or composite currency or currencies.
(2) Estimated for the sole purpose of computing the registration fee.
(3) No separate consideration will be received for the Guarantees.
(4) Such amount represents the principal amount of any Debt Securities issued at
    their principal amount and the issue price, rather than the principal amount
    of any Debt Securities issued at an original issue discount.
                            ------------------------
 
     THE REGISTRANTS HEREBY AMEND THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANTS
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, AS AMENDED OR UNTIL THIS REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION,
ACTING PURSUANT TO SAID SECTION 8(a), MAY DETERMINE.
                            ------------------------
 
     Pursuant to Rule 429 under the Securities Act of 1933, the Prospectus
included in this Registration Statement also relates to $50 million and $500
million of securities registered and remaining unissued under Registration
Statement Nos. 33-49543 and 33-50427, respectively, previously filed by Aetna
Life and Casualty Company, in respect of which $203,129 and $156,250,
respectively, has been paid to the Commission as filing fees.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
     INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
     REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
     SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR
     MAY OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT
     BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR
     THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE
     SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE
     UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS
     OF ANY SUCH STATE.
 
                   SUBJECT TO COMPLETION, DATED JUNE 28, 1996
 
                                     [LOGO]
 
                        AETNA LIFE AND CASUALTY COMPANY
 
                                DEBT SECURITIES
 
                        UNCONDITIONALLY GUARANTEED AS TO
                     PAYMENT OF PRINCIPAL, PREMIUM, IF ANY,
                                AND INTEREST BY
 
                                   AETNA INC.
 
     Aetna Life and Casualty Company, to be renamed Aetna Services, Inc. (the
"Company"), may from time to time offer its debt securities (the "Debt
Securities") which may be either senior debt securities (the "Senior Debt
Securities") or subordinated debt securities (the "Subordinated Debt
Securities") in amounts, at prices and on terms to be determined at the time of
offering. The Senior Debt Securities are unconditionally guaranteed (the "Senior
Debt Guarantees") as to the payment of principal, premium, if any, and interest
by Aetna Inc. ("Aetna") and the Subordinated Debt Securities are unconditionally
guaranteed on a subordinated basis (the "Subordinated Debt Guarantees" and,
together with the Senior Debt Guarantees, the "Debt Guarantees") as to the
payment of principal, premium, if any, and interest by Aetna. Upon consummation
of the mergers described under "Aetna Inc.", the Company will be a wholly-owned
subsidiary of Aetna.
 
     The Debt Securities offered pursuant to this Prospectus may be issued in
one or more series and will be limited to $2,000,000,000 aggregate public
offering price (or its equivalent (based on the applicable exchange rate at the
time of sale) in one or more foreign currencies, currency units or composite
currencies as shall be designated by the Company). Certain specific terms of the
particular Debt Securities in respect of which this Prospectus is being
delivered are set forth in the accompanying Prospectus Supplement (the
"Prospectus Supplement"), including, where applicable, the specific title,
aggregate principal amount, the denomination, whether such Debt Securities are
secured or unsecured obligations, maturity, premium, if any, the interest rate
(which may be fixed, floating or adjustable), the time and method of calculating
payment of interest, if any, the place or places where principal of (and
premium, if any) and interest, if any, on such Debt Securities will be payable,
the currency in which the principal of (and premium, if any) and interest, if
any, on such Debt Securities will be payable, any terms of redemption at the
option of the Company or the holder, any sinking fund provisions, the initial
public offering price and other special terms. If so specified in the applicable
Prospectus Supplement, Debt Securities of a series may be issued in whole or in
part in the form of one or more temporary or permanent global securities.
 
     Unless otherwise specified in a Prospectus Supplement, the Senior Debt
Securities and the Senior Debt Guarantees, when issued, will be unsecured and
will rank equally with all other unsecured and unsubordinated indebtedness of
the Company and Aetna, respectively, and the Subordinated Debt Securities and
the Subordinated Debt Guarantees, when issued, will be unsecured and will be
subordinated in right of payment to all Senior Debt of the Company and Senior
Debt of Aetna, respectively,
 
     The Prospectus Supplement will contain information concerning certain U.S.
federal income tax considerations, if applicable to the Debt Securities offered.
                            ------------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS
        THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE
           SECURITIES COMMISSION PASSED UPON THE ACCURACY OR
               ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION
                   TO THE CONTRARY IS A CRIMINAL OFFENSE.
                            ------------------------
 
     The Debt Securities will be sold directly, through agents, underwriters or
dealers as designated from time to time, or through a combination of such
methods. If agents of the Company or any dealers or underwriters are involved in
the sale of the Debt Securities in respect of which this Prospectus is being
delivered, the names of such agents, dealers or underwriters and any applicable
commissions or discounts are set forth in or may be calculated from the
Prospectus Supplement with respect to such Debt Securities.
                            ------------------------
 
               The date of this Prospectus is             , 1996.
<PAGE>   3
 
     NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED OR INCORPORATED BY REFERENCE IN THIS
PROSPECTUS IN CONNECTION WITH THE OFFER CONTAINED IN THIS PROSPECTUS AND, IF
GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS
HAVING BEEN AUTHORIZED BY THE COMPANY, AETNA OR ANY UNDERWRITERS, AGENTS OR
DEALERS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR SOLICITATION OF
AN OFFER TO BUY SECURITIES IN ANY JURISDICTION TO ANY PERSON TO WHOM IT IS
UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS
PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE AN
IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY AND ITS
SUBSIDIARIES, U.S. HEALTHCARE, INC. AND ITS SUBSIDIARIES OR AETNA AND ITS
SUBSIDIARIES SINCE THE DATE HEREOF OR THAT THE INFORMATION CONTAINED HEREIN IS
CORRECT AT ANY TIME SUBSEQUENT TO THE DATE HEREOF.
 
                             AVAILABLE INFORMATION
 
     Aetna is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports and other information with the Securities and Exchange
Commission (the "Commission"). Reports, proxy and information statements and
other information filed by Aetna can be inspected and copied at the public
reference facilities maintained by the Commission at Room 1024, 450 Fifth
Street, N.W., Washington, D.C. 20549, and at the following Regional Offices of
the Commission: Chicago Regional Office, Northwestern Atrium Center, 500 West
Madison Street, Suite 1400, Chicago, Illinois 60661; and New York Regional
Office, 7 World Trade Center, New York, New York 10048. Copies of such material
can be obtained from the Public Reference Section of the Commission at 450 Fifth
Street, N.W., Washington, D.C. 20549 at prescribed rates. Such reports, proxy
and information statements and other information concerning Aetna may also be
inspected at the offices of the New York Stock Exchange, Inc., 20 Broad Street,
New York, New York 10005, and the Pacific Stock Exchange, 301 Pine Street, San
Francisco, California 94104. Such material may also be accessed electronically
by means of the Commission's home page on the Internet at http://www.sec.gov.
 
     The Company and Aetna have filed with the Commission a registration
statement under the Securities Act of 1933, as amended (the "Securities Act"),
with respect to the Debt Securities and Debt Guarantees offered hereby (the
"Registration Statement"). This prospectus does not contain all of the
information set forth in the Registration Statement, certain parts of which are
omitted in accordance with the rules and regulations of the Commission.
Reference is made to the Registration Statement and to the exhibits relating
thereto for further information with respect to the Company and Aetna and the
Debt Securities and Debt Guarantees offered hereby.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The following documents previously filed with the Commission (File No.
1-5704) by the Company pursuant to the Exchange Act are incorporated by
reference into this Prospectus:
 
          1. The Company's Annual Report on Form 10-K for the year ended
     December 31, 1995.
 
          2. The Company's Quarterly Report on Form 10-Q for the three month
     period ended March 31, 1996.
 
          3. The Company's Current Reports on Form 8-K dated April 1, 1996,
     April 15, 1996 and June 28, 1996.
 
     The following documents previously filed with the Commission (File No.
0-11531) by U.S. Healthcare, Inc. ("U.S. Healthcare") pursuant to the Exchange
Act are incorporated by reference into this Prospectus:
 
          1. U.S. Healthcare's Annual Report on Form 10-K for the year ended
     December 31, 1995.
 
          2. U.S. Healthcare's Amendments to its Annual Report on Form 10-K/A,
     dated April 26, 1996 and June 11, 1996.
 
          3. U.S. Healthcare's Quarterly Report on Form 10-Q for the three month
     period ended March 31, 1996.
 
          4. U.S. Healthcare's Current Report on Form 8-K dated April 2, 1996.
 
                                        2
<PAGE>   4
 
     All documents filed by Aetna, the Company or U.S. Healthcare with the
Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act
subsequent to the date hereof and prior to the termination of the offering of
the Debt Securities shall hereby be deemed to be incorporated by reference into
this Prospectus and to be a part hereof from the date of filing of such
documents. Any statement contained herein or in a document incorporated or
deemed to be incorporated by reference herein shall be deemed to be modified or
superseded for purposes of this Prospectus to the extent that a statement
contained herein or in any other subsequently filed document which also is or is
deemed to be incorporated by reference herein or in any Prospectus Supplement
modifies or supersedes such statement. Any such statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Prospectus.
 
     The Company and Aetna will provide without charge to each person to whom
this Prospectus is delivered, on written or oral request of such person, a copy
of any or all of the foregoing documents incorporated by reference into this
Prospectus (without exhibits to such documents other than exhibits specifically
incorporated by reference into such documents). Requests for such copies should
be directed to the office of the Corporate Secretary, Aetna Inc., 151 Farmington
Avenue, Hartford CT 06156, telephone (860) 273-3977.
 
                        AETNA LIFE AND CASUALTY COMPANY
 
     The Company was organized in 1967 as a Connecticut insurance company. The
Company and its subsidiaries constitute one of the nation's largest insurance
and financial services organizations, centered around three core businesses:
Aetna Health Plans ("AHP"), Aetna Retirement Services ("ARS") and Aetna
International.
 
     AHP consists of Health, Specialty Health and Group Insurance businesses.
The Health business provides a full spectrum of managed care and traditional
indemnity plans, providing its members with a choice of health plans to meet
their individual needs. AHP's managed care products vary with respect to the
extent to which health care costs and utilization are managed and range from
preferred provider organization plans to point-of-service and health maintenance
organization plans. The Company also owns and manages physician practices for
use by its members and other consumers. Specialty Health products include
behavioral health, pharmacy and dental plans, which provide managed care or
indemnity features. The Group Insurance business provides life insurance,
disability (including managed disability) and long-term care plans.
 
     AHP products and services are marketed primarily to employers for the
benefit of employees and their dependents. Plans may be insured, whereby the
Company assumes all or a portion of health care cost and utilization risk, or
self-funded, whereby employers assume all or a significant portion of such
risks. AHP also provides administrative and claim services and, in many cases,
partial insurance protection, for an appropriate fee or premium charge.
 
     ARS markets and services two principal types of products: financial
services and life insurance.
 
     The financial services products include individual and group annuity
contracts which offer a variety of funding and distribution options for personal
and employer-sponsored retirement plans that qualify under Sections 401, 403,
408 and 457 of the Internal Revenue Code of 1986, as amended, and individual and
group nonqualified annuity contracts.
 
     ARS's life insurance products include universal life, variable universal
life, interest-sensitive whole life and term insurance. These products are
offered primarily to individuals, small businesses, employer-sponsored groups
and executives of Fortune 2000 companies.
 
     Aetna International, through subsidiaries and joint venture operations,
sells primarily life insurance and financial services products in non-U.S.
markets including Canada, Mexico, Taiwan, Chile, Malaysia, Hong Kong, New
Zealand, Peru, Argentina and Indonesia.
 
     On April 2, 1996, the Company completed the previously announced sale of
its property-casualty operations to an affiliate of The Travelers Insurance
Group Inc. ("Travelers") for total consideration of approximately $4.1 billion.
 
                                        3
<PAGE>   5
 
     In connection with the approval by shareholders of the Company of the
proposed merger of the Company and U.S. Healthcare pursuant to which each of the
Company and U.S. Healthcare will become wholly-owned subsidiaries of Aetna, the
shareholders of the Company will also be asked to approve an amendment to the
Company's Certificate of Incorporation to change its name to Aetna Services,
Inc. See "Aetna Inc." below.
 
     The principal executive offices of the Company are located at 151
Farmington Avenue, Hartford, CT 06156. The Company's telephone number is (860)
273-0123.
 
                                        4
<PAGE>   6
 
                                   AETNA INC.
 
     Aetna Inc., a Connecticut corporation, was formed by the Company and U.S.
Healthcare in March 1996 in connection with the Agreement and Plan of Merger,
dated as of March 30, 1996, as amended by Amendment No. 1 thereto dated as of
May 30, 1996 (the "Merger Agreement"), among the Company, U.S. Healthcare,
Aetna, Antelope Sub, Inc., a Connecticut corporation and a wholly-owned
subsidiary of Aetna ("Aetna Sub"), and New Merger Corporation, a Pennsylvania
corporation and a wholly-owned subsidiary of Aetna ("U.S. Healthcare Sub").
Pursuant to such Merger Agreement and subject to the conditions contained
therein, including the approval of the Merger Agreement by the shareholders of
the Company and U.S. Healthcare at shareholder meetings to be held on July 18,
1996, Aetna Sub will be merged with and into the Company (the "Aetna Sub
Merger") and U.S. Healthcare Sub will be merged with and into U.S. Healthcare
(the "U.S. Healthcare Sub Merger" and, together with the Aetna Sub Merger, the
"Mergers"), with the result that the Company and U.S. Healthcare will become
wholly-owned subsidiaries of Aetna. Accordingly, the businesses of Aetna through
its wholly-owned subsidiaries, the Company and U.S. Healthcare, initially will
be the businesses currently conducted by the Company and U.S. Healthcare and
their respective subsidiaries. The U.S. Healthcare Sub Merger will be accounted
for under the purchase method of accounting and the Aetna Sub Merger will be
treated as a reorganization with no change in the recorded amount of the
Company's assets and liabilities. If approved by the shareholders of the Company
and U.S. Healthcare at such meetings and if the other conditions to the Mergers
set forth in the Merger Agreement are satisfied, it is currently expected that
the Mergers will be consummated in the third quarter of 1996. Aetna has not
conducted any business activities to date, other than those incident to its
formation, its execution of the Merger Agreement and related agreements and in
connection with the Mergers.
 
     The principal executive offices of Aetna are located at 151 Farmington
Avenue, Hartford, Connecticut 06156; its telephone number is (860) 273-0123.
 
U.S. HEALTHCARE, INC.
 
     U.S. Healthcare is a Pennsylvania corporation, incorporated in 1982. U.S.
Healthcare is one of the largest managed care companies in the United States. As
of December 31, 1995, U.S. Healthcare's health maintenance organization ("HMO")
service network included approximately 13,400 primary care physicians, 40,600
specialists, 441 hospitals and 7,000 pharmacies.
 
     U.S. Healthcare provides comprehensive managed health care services through
HMOs it owns and operates in Pennsylvania, New Jersey, New York, Delaware,
Connecticut, Massachusetts, New Hampshire, Maryland, Georgia, Virginia, Rhode
Island, North Carolina, South Carolina, Ohio and the District of Columbia. The
services of U.S. Healthcare's HMOs are marketed primarily to employer groups and
are provided through networks of independent health care providers, including
selected primary care physicians who coordinate each member's individual medical
care. In addition to comprehensive primary physician care, specialist care and
hospital services, U.S. Healthcare makes available home health care and other
outpatient services as well as optional prescription drug, vision care and
dental plans. U.S. Healthcare contracts with independent primary care physicians
who are reimbursed under prospective payment arrangements.
 
     U.S. Healthcare's health plans consist of HMO plans and indemnity-type
plans offered both on a fully-insured and an employer-funded basis. Under
fully-insured health plans, U.S. Healthcare charges a premium and bears the risk
for medical costs incurred. Under employer-funded health plans, U.S. Healthcare
charges a fee for providing administrative services and the employer bears
substantially all risk for medical costs incurred. Under fully-insured HMO
plans, members receive comprehensive medical coverage in exchange for a fixed
monthly premium. In addition, U.S. Healthcare also offers a number of
supplemental benefit coverages to employers, either as supplements to HMO plans
or as stand-alone products, including dental plans, prescription drug plans,
vision plans, employee assistance programs and wellness programs.
 
     U.S. Healthcare offers network-based workers' compensation case management
and network-based managed disability services, quality and outcome measurement
and improvement programs and health care data analysis systems for providers and
purchasers of health care. U.S. Healthcare provides assistance to multi-state
employers by coordinating their relationships with other HMOs.
 
                                        5
<PAGE>   7
 
                                USE OF PROCEEDS
 
     Except as may otherwise be set forth in the applicable Prospectus
Supplement, the net proceeds from the sale of the Debt Securities will be added
to the Company's general funds and used for general corporate purposes,
including the repayment of indebtedness.
 
               RATIO OF EARNINGS TO FIXED CHARGES OF THE COMPANY
 
     The following table sets forth the Company's historical ratio of earnings
to fixed charges for the periods indicated.
 
<TABLE>
<CAPTION>
 THREE MONTHS               YEARS ENDED DECEMBER 31,
    ENDED          ------------------------------------------
MARCH 31, 1996     1995     1994     1993     1992      1991
- --------------     ----     ----     ----     ----     ------
<S>                <C>      <C>      <C>      <C>      <C>
     6.04          4.97     4.74     (a)      1.90      .54(b)
</TABLE>
 
- ---------------
(a) The Company reported a pretax loss from continuing operations in 1993 which
    was inadequate to cover fixed charges by $1.0 billion.
 
(b) Earnings were inadequate to cover fixed charges by $92.0 million in 1991.
 
     For purposes of computing the ratio of earnings to fixed charges,
"earnings" represent consolidated earnings from continuing operations before
income taxes, cumulative effect adjustments and extraordinary items plus fixed
charges and minority interests. "Fixed charges" consist of interest (and the
portion of rental expense deemed representative of the interest factor). The
Company's former property-casualty operations, sold to Travelers on April 2,
1996 and certain other operations are reflected as discontinued operations in
its consolidated financial statements.
 
                                        6
<PAGE>   8
 
               DESCRIPTION OF DEBT SECURITIES AND DEBT GUARANTEES
 
     The following description sets forth certain general terms and provisions
of the Debt Securities and Debt Guarantees to which any Prospectus Supplement
may relate. The particular terms of the Debt Securities and Debt Guarantees
offered by any Prospectus Supplement and the extent, if any, to which such
general provisions may not apply to the Debt Securities and Debt Guarantees so
offered will be described in the Prospectus Supplement relating to such Debt
Securities and Debt Guarantees.
 
     The Senior Debt Securities and the Senior Debt Guarantees are to be issued
under an Indenture to be dated as of July 1, 1996 (the "Senior Indenture"),
between the Company, Aetna and State Street Bank and Trust Company of
Connecticut, National Association, as trustee. The Subordinated Debt Securities
and the Subordinated Debt Guarantees are to be issued under a separate Indenture
to be dated as of July 1, 1996 (the "Subordinated Indenture"), also between the
Company, Aetna and State Street Bank and Trust Company of Connecticut, National
Association, as trustee. The Senior Indenture and the Subordinated Indenture are
sometimes referred to collectively as the "Indentures." Copies of the Senior
Indenture and the Subordinated Indenture have been filed as exhibits to the
Registration Statement. State Street Bank and Trust Company of Connecticut,
National Association is hereinafter referred to as the "Trustee." The following
summaries of certain provisions of the Senior Debt Securities, the Subordinated
Debt Securities, the Senior Debt Guarantees, the Subordinated Debt Guarantees
and the Indentures do not purport to be complete and are subject to, and are
qualified in their entirety by reference to, all the provisions of the
Indentures applicable to a particular series of Debt Securities and the related
Debt Guarantees, including the definitions therein of certain terms. Wherever
particular Sections, Articles or defined terms of the Indentures are referred
to, it is intended that such Sections, Articles or defined terms shall be
incorporated herein by reference. Article and Section references used herein are
references to the applicable Indenture. Capitalized terms not otherwise defined
herein shall have the meaning given in the Indentures.
 
GENERAL
 
     The Indentures do not limit the aggregate principal amount of Debt
Securities which may be issued thereunder and each Indenture provides that Debt
Securities may be issued thereunder from time to time in one or more series.
Unless otherwise specified in the Prospectus Supplement, the Senior Debt
Securities and the Senior Debt Guarantees when issued will be unsecured and
unsubordinated obligations of the Company and Aetna, respectively, and will rank
equally and ratably with all other unsecured and unsubordinated indebtedness of
the Company and Aetna, respectively. The Subordinated Debt Securities and the
Subordinated Debt Guarantees when issued will be unsecured and subordinated in
right of payment to the prior payment in full of all Senior Debt (as defined) of
the Company and Aetna, respectively, as described under "Subordination of
Subordinated Debt Securities and Subordinated Debt Guarantees" and in the
Prospectus Supplement applicable to an offering of Subordinated Debt Securities
and the Subordinated Debt Guarantees.
 
     Reference is made to the Prospectus Supplement relating to the particular
Debt Securities offered thereby (the "Offered Debt Securities") which shall set
forth whether the Offered Debt Securities shall be Senior Debt Securities,
guaranteed on a senior basis by Aetna pursuant to the Senior Debt Guarantees, or
Subordinated Debt Securities, guaranteed on a subordinated basis by Aetna
pursuant to the Subordinated Debt Guarantees, and shall further set forth the
following terms of the Offered Debt Securities: (1) the title of the Offered
Debt Securities; (2) any limit on the aggregate principal amount of the Offered
Debt Securities; (3) the Person to whom any interest on the Offered Debt
Securities will be payable, if other than the Person in whose name such Offered
Debt Securities are registered on any Regular Record Date; (4) the date or dates
on which the principal of the Offered Debt Securities will be payable; (5) the
rate or rates per annum (which may be fixed, floating or adjustable) at which
the Offered Debt Securities will bear interest, if any, or the formula pursuant
to which such rate or rates shall be determined, the date or dates from which
such interest will accrue and the dates on which such interest, if any, will be
payable and the Regular Record Dates for such interest payment dates; (6)
whether the Offered Debt Securities will be secured; (7) the place or places
where principal of (and premium, if any) and interest, if any, on Offered Debt
Securities will be payable; (8) if applicable, the price at which, the periods
within which and the terms and conditions upon which the Offered Debt Securities
may be redeemed at the option of the Company pursuant to a sinking fund or
otherwise; (9) if
 
                                        7
<PAGE>   9
 
applicable, any obligation of the Company to redeem or purchase Offered Debt
Securities pursuant to any sinking fund or analogous provisions or at the option
of a Holder thereof, and the period or periods within which, the price or prices
at which and the terms and conditions upon which the Offered Debt Securities
will be redeemed or purchased, in whole or in part; (10) if other than
denominations of $1,000 and any integral multiple thereof, the denominations in
which the Offered Debt Securities will be issuable; (11) the currency or
currencies, including composite currencies or currency units, in which payment
of the principal of (or premium, if any) or interest, if any, on any of the
Offered Debt Securities will be payable if other than the currency of the United
States of America; (12) if the amount of payments of principal of (or premium,
if any) or interest, if any, on the Offered Debt Securities may be determined
with reference to one or more indices, the manner in which such amounts will be
determined; (13) if the principal of (or premium, if any) or interest, if any,
on any of the Offered Debt Securities of the series is to be payable, at the
election of the Company or a Holder thereof, in one or more currencies,
including composite currencies, or currency units other than that or those in
which the Debt Securities are stated to be payable, the currency, currencies,
including composite currencies, or currency units in which payment of the
principal of (or premium, if any) or interest, if any, on Debt Securities of
such series as to which such election is made will be payable, and the periods
within which and the terms and conditions upon which such election is to be
made; (14) the portion of the principal amount of the Offered Debt Securities,
if other than the principal amount thereof, payable upon acceleration of
maturity thereof; (15) whether all or any part of the Offered Debt Securities
will be issued in the form of a Global Security or Securities and, if so, the
depositary for, and other terms relating to, such Global Security or Securities;
(16) any event or events of default applicable with respect to the Offered Debt
Securities in addition to those provided in the Indentures; (17) any other
covenant or warranty included for the benefit of the Offered Debt Securities in
addition to (and not inconsistent with) those included in the Indentures for the
benefit of Debt Securities of all series, or any other covenant or warranty
included for the benefit of the Offered Debt Securities in lieu of any covenant
or warranty included in the Indentures for the benefit of Debt Securities of all
series, or any provision that any covenant or warranty included in the
Indentures for the benefit of Debt Securities of all series shall not be for the
benefit of the Offered Debt Securities, or any combination of such covenants,
warranties or provisions; (18) the guarantee of Aetna of the Debt Securities if
other than as described herein; (19) any restriction or condition on the
transferability of the Offered Debt Securities; (20) any authenticating or
paying agents, registrars, conversion agents or any other agents with respect to
the Offered Debt Securities; and (21) any other terms of the Offered Debt
Securities. (Section 301)
 
     Unless otherwise indicated in the Prospectus Supplement relating thereto,
the Offered Debt Securities are to be issued as registered securities without
coupons in denominations of $1,000 or any integral multiple of $1,000. (Section
302) No service charge will be made for any transfer or exchange of such Offered
Debt Securities, but the Company or the Trustee may require payment of a sum
sufficient to cover any tax or other governmental charge payable in connection
therewith. (Section 305)
 
     Debt Securities may be issued under the Indentures as Original Issue
Discount Securities to be sold at a substantial discount below their stated
principal amount. Federal income tax consequences and other considerations
applicable thereto will be described in the Prospectus Supplement relating
hereto.
 
     Since the Company is, and following the Mergers Aetna will be, a holding
company, the rights of the Company and Aetna, respectively, and hence the right
of creditors of the Company and Aetna (including the Holders of Debt
Securities), to participate in any distribution of the assets of their
respective subsidiaries (including in the case of Aetna following the Mergers,
the Company and U.S. Healthcare), upon any such Subsidiary's liquidation or
reorganization or otherwise is necessarily subject to the prior claims of
creditors of the subsidiary, except to the extent that claims of the Company or
Aetna, as a creditor of the subsidiary, may be recognized.
 
     The Indentures do not contain any provisions that limit the ability of the
Company or Aetna to incur indebtedness or that afford Holders of the Debt
Securities protection in the event of a highly leveraged or similar transaction
involving the Company or Aetna.
 
                                        8
<PAGE>   10
 
EVENTS OF DEFAULT AND NOTICE THEREOF
 
     Unless otherwise specified in the Prospectus Supplement, the following
events are defined in the Indentures as "Events of Default" with respect to Debt
Securities of any series: (a) failure to pay principal (including any sinking
fund payment) of, or premium (if any) on, any Debt Security of that series when
due (in the case of the Subordinated Indenture, whether or not payment is
prohibited by the subordination provisions); (b) failure to pay interest, if
any, on any Debt Security of that series when due and such failure continues for
a period of 30 days; (c) failure by the Company or Aetna to perform in any
material respect any other covenant in the Indentures (other than a covenant
included in the Indentures solely for the benefit of a series of Debt Securities
other than that series) continued for a period of 90 days after written notice
to the Company and Aetna; (d) due acceleration (which acceleration shall not
have been rescinded within 30 days after written notice to the Company and
Aetna) of any indebtedness for borrowed money in a principal amount in excess of
$50,000,000 for which the Company, Aetna or a Principal Subsidiary (as defined)
is liable, including Debt Securities of another series (other than acceleration
of Non-Recourse Debt for borrowed money which does not exceed in the aggregate
4% of Aetna's total shareholders' equity, as set forth in the most recently
published audited consolidated balance sheet of Aetna), or a default by the
Company, Aetna or any Principal Subsidiary in the payment at final maturity of
outstanding indebtedness for borrowed money in a principal amount in excess of
$50,000,000 (other than default in payment at final maturity of Non-Recourse
Debt which does not exceed in the aggregate 4% of Aetna's total shareholders'
equity, as set forth in the most recently published audited consolidated balance
sheet of Aetna) unless such acceleration or default at maturity shall be
remedied or cured by the Company, Aetna or such Principal Subsidiary or
rescinded, annulled or waived by the holders of such indebtedness, in which case
such acceleration or default at maturity shall not constitute an Event of
Default under this provision and any acceleration relating thereto shall be
rescinded; and (e) certain events of insolvency, reorganization, receivership or
liquidation of the Company or Aetna. (Section 501)
 
     No Event of Default with respect to Debt Securities of a particular series
shall necessarily constitute an Event of Default with respect to Debt Securities
of any other series. If an Event of Default with respect to Debt Securities of
any series at the time Outstanding shall occur and be continuing, either the
Trustee or the Holders of at least 25% in principal amount of the Outstanding
Debt Securities of that series may declare the principal amount (or, if the Debt
Securities of that series are Original Issue Discount Securities, such portion
of the principal amount as may be specified in the terms of that series) of all
Debt Securities of that series to be due and payable immediately; provided,
however, that under certain circumstances the Holders of a majority in aggregate
principal amount of Outstanding Debt Securities of that series may rescind or
annul such declaration and its consequences. (Section 502)
 
     Reference is made to the Prospectus Supplement relating to any series of
Offered Debt Securities which are Original Issue Discount Securities for the
particular provisions relating to the principal amount of such Original Issue
Discount Securities due on acceleration upon the occurrence of an Event of
Default and the continuation thereof.
 
     The Indentures provide that the Trustee may withhold notice to the Holders
of the Debt Securities of any default (except in payment of principal (or
premium, if any) or interest, if any) if it considers it in the interest of the
holders of the Debt Securities to do so. (Section 602)
 
     The Company and Aetna will be required to furnish to the Trustee annually a
statement by certain officers of the Company and Aetna as to the compliance with
all conditions and covenants of the Indentures. (Section 1004)
 
     The Holders of a majority in principal amount of the Outstanding Debt
Securities of any series affected will have the right, subject to certain
limitations, to direct the time, method and place of conducting any proceeding
for any remedy available to the Trustee or exercising any trust or power
conferred on the Trustee with respect to the Debt Securities of such series, and
to waive certain defaults. (Sections 512 and 513)
 
     The Indentures provide that, in case an Event of Default shall occur and be
continuing, the Trustee shall exercise such of its rights and powers under the
Indentures, and use the same degree of care and skill in its
 
                                        9
<PAGE>   11
 
exercise, as a prudent man would exercise or use under the circumstances in the
conduct of his own affairs. (Section 601) Subject to such provisions, the
Trustee will be under no obligation to exercise any of its rights or powers
under the Indentures at the request of any of the Holders of Debt Securities
unless they shall have offered to the Trustee security or indemnity in form and
substance reasonably satisfactory to the Trustee against the costs, expenses and
liabilities which might be incurred by it in compliance with such request.
(Section 603)
 
     No Holder of a Debt Security of any series will have any right to institute
any proceeding with respect to the Indentures or for any remedy thereunder,
unless such Holder shall have previously given to the Trustee written notice of
a continuing Event of Default with respect to the Debt Securities of such series
and unless also the Holders of at least 25% in aggregate principal amount of the
Outstanding Debt Securities of the same series shall have made written request,
and offered indemnity to the Trustee in form and substance reasonably
satisfactory to the Trustee, to institute such proceeding as trustee, and the
Trustee shall not have received from the Holders of a majority in aggregate
principal amount of the Outstanding Debt Securities of the same series a
direction inconsistent with such request and shall have failed to institute such
proceeding within 60 days. (Section 507) However, such limitations do not apply
to a suit instituted by a Holder of a Debt Security for enforcement of payment
of the principal of (or premium, if any) or interest, if any, on such Debt
Security on or after the respective due dates expressed in such Debt Security.
(Section 508)
 
MODIFICATION AND WAIVER
 
     Modifications and amendments of the Indentures may be made by the Company,
Aetna and the Trustee, with the consent of the Holders of not less than a
majority of aggregate principal amount of each series of the Outstanding Debt
Securities issued under the Indentures which is affected by the modification or
amendment; provided, however, that no such modification or amendment may,
without the consent of each Holder of such Debt Security affected thereby: (1)
change the Stated Maturity of the principal of (or premium, if any) or any
installment of principal or interest, if any, on any such Debt Security; (2)
reduce the principal amount of (or premium, if any) or the interest rate, if
any, on any such Debt Security or the principal amount due upon acceleration of
an Original Issue Discount Security; (3) change the place or currency of payment
of principal of (or premium, if any) or the interest, if any, on any such Debt
Security; (4) impair the right to institute suit for the enforcement of any such
payment on or with respect to any such Debt Security; (5) reduce the percentage
of Holders of Debt Securities necessary to modify or amend the Indentures; (6)
modify or affect in any manner adverse to the interest of Holders of Debt
Securities the obligation of Aetna under the Debt Guarantees in respect of the
due and punctual payment of the principal of (and premium, if any) or interest
on the Debt Securities, (7) in the case of the Subordinated Indenture, modify
the subordination provisions in a manner adverse to the holders of the
Subordinated Debt Securities; or (8) modify the foregoing requirements or reduce
the percentage of Outstanding Debt Securities necessary to waive compliance with
certain provisions of the Indentures or for waiver of certain defaults. (Section
902)
 
     The holders of at least a majority of the aggregate principal amount of the
Outstanding Debt Securities of any series may, on behalf of all Holders of that
series, waive compliance by the Company and Aetna with certain restrictive
provisions of the Indentures and waive any past default under the Indentures,
except a default in the payment of principal, premium or interest or in the
performance of certain covenants. (Sections 907 and 513)
 
DEFEASANCE AND COVENANT DEFEASANCE
 
     The Indentures provide that the Company and Aetna, at the Company's option,
(A) will be defeased and discharged from any and all of their respective
obligations with respect to such Debt Securities and the Debt Guarantees
(including, in the case of Subordinated Debt Securities and Subordinated Debt
Guarantees, the provisions described under "Subordination of Subordinated Debt
Securities and Subordinated Debt Guarantees" herein and except for the
obligations to exchange or register the transfer of such Debt Securities, to
replace temporary or mutilated, destroyed, lost or stolen Debt Securities, to
maintain an office or agency in respect of the Debt Securities, and to hold
monies for payments in trust) ("defeasance"), or (B) will be released from their
respective obligations under the Indentures concerning the restrictions
described under
 
                                       10
<PAGE>   12
 
"Limitations on Liens on Common Stock of Principal Subsidiaries" and
"Consolidation, Merger and Sale of Assets" and any other covenants applicable to
such Debt Securities and the Debt Guarantees (including, in the case of the
Subordinated Debt Securities and the Subordinated Debt Guarantees, the
provisions described under "Subordination of Subordinated Debt Securities and
Subordinated Debt Guarantees" herein) which are subject to covenant defeasance
("covenant defeasance"), and the occurrence of an event described and notice
thereof in clauses (c) and (d) under "Events of Default and Notice Thereof"
(with respect to covenants subject to covenant defeasance) shall no longer be an
Event of Default, in each case, upon the irrevocable deposit with the Trustee
(or other qualifying trustee), in trust for such purpose, of money, and/or U.S.
Government Obligations (as defined) (or Foreign Government Obligations (as
defined) in the case of Debt Securities denominated in foreign currencies) which
through the payment of principal and interest in accordance with their terms
will provide money in an amount sufficient to pay the principal of (and premium,
if any) and interest, if any, on such Debt Securities, and any mandatory sinking
fund or analogous payments thereon, on the scheduled due dates therefor. Such a
trust may only be established if, among other things, (i) the Company has
delivered to the Trustee an opinion of counsel (as specified in the Indentures)
to the effect that the Holders of such Debt Securities will not recognize
income, gain or loss for Federal income tax purposes as a result of such
defeasance or covenant defeasance and will be subject to Federal income tax on
the same amounts, in the same manner and at the same times as would have been
the case if such defeasance or covenant defeasance had not occurred, (ii) no
Event of Default or event which with the giving of notice or lapse of time, or
both, would become an Event of Default under the Indenture shall have occurred
and be continuing on the date of such deposit (or, with respect to any event
specified in clause (e) under "Events of Default and Notice Thereof", at any
time on or prior to the 90th day after the date of such deposit) and (iii) in
the case of Subordinated Debt Securities, (x) no default in the payment of
principal of (or premium, if any) or interest, if any, on any Senior Debt of the
Company or Aetna beyond any applicable grace period shall have occurred and be
continuing, or (y) no other default with respect to any Senior Debt of the
Company or Aetna shall have occurred and be continuing and shall have resulted
in the acceleration of such Senior Debt. (Article Twelve)
 
     The Company may exercise its defeasance option with respect to such Debt
Securities and Debt Guarantees notwithstanding its prior exercise of its
covenant defeasance option. If the Company exercises its defeasance option,
payment of such Debt Securities may not be accelerated because of an Event of
Default. If the Company exercises its covenant defeasance option, payment of
such Debt Securities may not be accelerated by reference to the covenants noted
under clause (B) above. In the event the Company and Aetna omit to comply with
their remaining obligations with respect to such Debt Securities and Debt
Guarantees under the Indentures after the exercise by the Company of its
covenant defeasance option and such Debt Securities are declared due and payable
because of the occurrence of any Event of Default, the amount of money and U.S.
Government Obligations (or Foreign Government Obligations in the case of Debt
Securities denominated in foreign currencies) on deposit with the Trustee may be
insufficient to pay amounts due on the Debt Securities of such series at the
time of the acceleration resulting from such Event of Default. However, the
Company and Aetna will remain liable in respect of such payments. (Article
Twelve)
 
LIMITATIONS ON LIENS ON COMMON STOCK OF PRINCIPAL SUBSIDIARIES
 
     As long as any of the Debt Securities remains outstanding, Aetna will not,
and will not permit any Principal Subsidiary to, issue, assume, incur or
guarantee any indebtedness for borrowed money secured by a mortgage, pledge,
lien or other encumbrance, directly or indirectly, on any of the Common Stock of
a Principal Subsidiary, which Common Stock is owned by Aetna, by the Company or
by any Principal Subsidiary, unless the obligations of the Company under the
Debt Securities and, if the Company or Aetna so elects, any other indebtedness
of the Company or Aetna ranking on a parity with, or prior to, the Debt
Securities or the Guarantor's obligations under the Debt Guarantees, as the case
may be, shall be secured equally and ratably with, or prior to, such secured
indebtedness for borrowed money so long as it is outstanding and is so secured.
(Section 1005)
 
     "Principal Subsidiary" means only Aetna Life Insurance Company, Aetna Life
Insurance and Annuity Company and U.S. Healthcare and any other Subsidiary of
Aetna which shall hereafter succeed by merger or
 
                                       11
<PAGE>   13
 
otherwise to a major part of the business of one or more of the Principal
Subsidiaries. The decision as to whether a Subsidiary shall have succeeded to a
major part of the business of one or more of the Principal Subsidiaries shall be
made in good faith by the Board of Directors of Aetna or a committee thereof by
the adoption of a resolution so stating, and Aetna shall within 30 days of the
date of the adoption of such resolution deliver to the Trustee a copy thereof,
certified by the Corporate Secretary or an Assistant Corporate Secretary of
Aetna. (Section 101)
 
     "Common Stock" means, with respect to any Principal Subsidiary, stock of
any class, however designated, except stock which is non-participating beyond
fixed dividend and liquidation preferences and the holders of which have either
no voting rights or limited voting rights entitling them, only in the case of
certain contingencies, to elect less than a majority of the directors (or
persons performing similar functions) of such Principal Subsidiary, and shall
include securities of any class, however designated, which are convertible into
such Common Stock. (Section 101)
 
CONSOLIDATION, MERGER AND SALE OF ASSETS; ASSUMPTION BY GUARANTOR OR SUBSIDIARY
OF COMPANY OBLIGATIONS
 
     Neither the Company nor Aetna may consolidate with or merge into any other
Person or sell its property and assets as, or substantially as, an entirety to
any Person and neither the Company nor Aetna may permit any Person to merge into
or consolidate with the Company or Aetna, as the case may be, unless (i) either
the Company or Aetna, as the case may be, will be the resulting or surviving
entity or any successor or purchaser is a corporation, partnership or trust
organized under the laws of the United States of America, any State or the
District of Columbia, and any such successor or purchaser expressly assumes the
Company's or Aetna's obligations on the Debt Securities or the Debt Guarantees,
as applicable, under a supplemental Indenture, (ii) immediately after giving
effect to the transaction no Event of Default shall have occurred and be
continuing, and (iii) certain other conditions are met. (Section 801)
 
     Aetna or any Subsidiary of Aetna may, where permitted by law, assume the
obligations of the Company for the due and punctual payment of the principal of
(premium, if any) and interest on and any other payments with respect to the
Debt Securities of any series and the performance of every covenant of the
Indenture and the Debt Securities on the part of Company to be performed or
observed if (i) Aetna or such Subsidiary, as the case may be, shall expressly
assume such obligations by a supplemental indenture, in form reasonably
satisfactory to the Trustee, and, if such Subsidiary assumed such obligations,
Aetna shall, by such supplemental indenture, confirm that its Debt Guarantees
with respect to the Debt Securities of such series shall apply to such
Subsidiary's obligations under the Debt Securities of such series and the
Indenture; (ii) immediately after giving effect to such transaction, no Event of
Default shall have occurred and be continuing; and (iii) certain other
conditions are met. (Section 803).
 
SUBORDINATION OF SUBORDINATED DEBT SECURITIES AND SUBORDINATED DEBT GUARANTEES
 
     Unless otherwise indicated in the Prospectus Supplement, the following
provisions will apply to the Subordinated Debt Securities and Subordinated Debt
Guarantees.
 
     The Subordinated Debt Securities will, to the extent set forth in the
Subordinated Indenture, be subordinate in right of payment to the prior payment
in full of all Senior Debt of the Company, including the Senior Debt Securities,
and the Subordinated Debt Guarantees will, to the extent set forth in the
Subordinated Indenture, be subordinate in right of payment to the prior payment
in full of all Senior Debt of Aetna, including the Senior Debt Guarantees. Upon
any payment or distribution of assets to creditors upon any liquidation,
dissolution, winding up, reorganization, assignment for the benefit of
creditors, marshalling of assets or any bankruptcy, insolvency, debt
restructuring or similar proceedings in connection with any insolvency or
bankruptcy proceeding of the Company or Aetna, as the case may be, the holders
of Senior Debt of the Company or Aetna, as the case may be, will first be
entitled to receive payment in full of principal of (and premium, if any) and
interest, if any, on such Senior Debt of the Company or Aetna, as the case may
be, before the holders of the Subordinated Debt Securities will be entitled to
receive or retain any payment in respect of the principal of (and premium, if
any) or interest, if any, on the Subordinated Debt Securities. (Subordinated
Indenture Sections 1402 and 1602)
 
                                       12
<PAGE>   14
 
     By reason of such subordination, in the event of liquidation or insolvency,
(i) creditors of the Company who are not holders of Senior Debt of the Company
or Subordinated Debt Securities may recover less, ratably, than holders of
Senior Debt of the Company and may recover more, ratably, than the holders of
the Subordinated Debt Securities and (ii) creditors of Aetna who are not holders
of Senior Debt of Aetna or Subordinated Debt Securities may recover less,
ratably, than holders of Senior Debt of Aetna and may recover more, ratably,
than holders of Subordinated Debt Securities.
 
     In the event of the acceleration of the maturity of any Subordinated Debt
Securities, the holders of all Senior Debt of the Company and Aetna outstanding
at the time of such acceleration will first be entitled to receive payment in
full of all amounts due thereon before the Holders of Subordinated Debt
Securities will be entitled to receive any payment upon the principal of (or
premium, if any) or interest, if any, on the Subordinated Debt Securities.
(Subordinated Indenture Sections 1403 and 1603)
 
     No payments on account of principal (or premium, if any) or interest, if
any, in respect of the Subordinated Debt Securities may be made if there shall
have occurred and be continuing a default in the payment of principal of (or
premium, if any) or interest on Senior Debt of the Company or Aetna, or an event
of default with respect to any Senior Debt of the Company or Aetna resulting in
the acceleration of the maturity thereof, or if any judicial proceeding shall be
pending with respect to any such default. (Subordinated Indenture Sections 1404
and 1604)
 
     "Debt" means (without duplication and without regard to any portion of
principal amount that has not accrued and to any interest component thereof
(whether accrued or imputed) that is not due and payable) with respect to any
Person, whether recourse is to all or a portion of the assets of such Person and
whether or not contingent, (i) every obligation of such Person for money
borrowed; (ii) every obligation of such Person evidenced by bonds, debentures,
notes or other similar instruments, including obligations incurred in connection
with the acquisition of property, assets or businesses; (iii) every
reimbursement obligation of such Person with respect to letters of credit,
bankers' acceptances or similar facilities issued for the account of such
Person; (iv) every obligation of such Person issued or assumed as the deferred
purchase price of property or services (but excluding trade accounts payable or
accrued liabilities arising in the ordinary course of business); (v) every
capital lease obligation of such Person; and (vi) every obligation of the type
referred to in clauses (i) through (v) of another Person and all dividends of
another Person the payment of which, in either case, such Person has guaranteed
or is responsible or liable, directly or indirectly, as obligor or otherwise.
(Subordinated Indenture Section 101)
 
     "Senior Debt" means with respect to any Person the principal of (and
premium, if any) and interest, if any (including interest accruing on or after
the filing of any petition in bankruptcy or for reorganization relating to such
Person to the extent that such claim for post-petition interest is allowed in
such proceeding), on Debt of such Person, whether incurred on or prior to the
date of the Subordinated Indenture or thereafter incurred, unless, in the
instrument creating or evidencing the same or pursuant to which the same is
outstanding, it is provided that such obligations are not superior in right of
payment to the Subordinated Debt Securities, in the case of the Company, or the
Subordinated Debt Guarantees, in the case of Aetna, or to other Debt of such
Person which is pari passu with, or subordinated to the Subordinated Debt
Securities, in the case of the Company, or the Subordinated Debt Guarantees, in
the case of Aetna; provided, however, that Senior Debt shall be deemed not to
include (i) in the case of the Company, the Subordinated Debt Securities or (ii)
in the case of Aetna, the Subordinated Debt Guarantees. (Subordinated Indenture
Section 101)
 
     The Subordinated Indenture does not limit or prohibit the incurrence of
additional Senior Debt of the Company or Aetna, which may include indebtedness
that is senior to the Subordinated Debt Securities and the Subordinated Debt
Guarantees, but subordinate to other obligations of the Company or Aetna,
respectively. The Senior Debt Securities and the Senior Debt Guarantees, when
issued, will constitute Senior Debt of the Company and Aetna, respectively.
 
     The Prospectus Supplement may further describe the provisions, if any,
applicable to the subordination of the Subordinated Debt Securities of a
particular series or the Subordinated Debt Guarantees with respect thereto.
 
                                       13
<PAGE>   15
 
GLOBAL SECURITIES
 
     The Debt Securities of a series may be issued in the form of one or more
Global Securities that will be deposited with a Depositary or its nominee. In
such a case, one or more Global Securities will be issued in a denomination or
aggregate denominations equal to the portion of the aggregate principal amount
of Outstanding Debt Securities of the series to be represented by such Global
Security or Securities. Unless and until it is exchanged in whole or in part for
Debt Securities in definitive registered form, a Global Security may not be
registered for transfer or exchange except as a whole by the Depositary for such
Global Security to a nominee for such Depositary and except in the circumstances
described in the applicable Prospectus Supplement. (Sections 204 and 305)
 
     The specific terms of the depositary arrangement with respect to any
portion of a series of Debt Securities to be represented by a Global Security
and a description of the Depositary will be contained in the applicable
Prospectus Supplement.
 
THE TRUSTEE
 
     The Indentures contain limitations on the right of the Trustee, as a
creditor of the Company and Aetna, to obtain payment of claims in certain cases,
or to realize on certain property received in respect of any such claim as
security or otherwise. In addition, the Trustee may be deemed to have a
conflicting interest and may be required to resign as Trustee if at the time of
a default under the Indentures it is a creditor of the Company or Aetna.
 
     The Trustee or its affiliates act as depositary for funds of, makes loans
to and performs other services for, or may be a customer of, the Company and
Aetna in the ordinary course of business.
 
GOVERNING LAW
 
     The Indentures are governed by and shall be construed in accordance with
the laws of the State of New York, but without regard to principles of conflicts
of laws.
 
                              PLAN OF DISTRIBUTION
 
     The Company may sell Debt Securities to one or more underwriters for public
offering and sale by them or may sell Debt Securities to investors or other
persons directly or through agents. The Company may sell Debt Securities as soon
as practicable after effectiveness of the Registration Statement, provided that
favorable market conditions exist. Any such underwriter or agent involved in the
offer and sale of the Debt Securities will be named in an applicable Prospectus
Supplement.
 
     Underwriters may offer and sell the Debt Securities at a fixed price or
prices, which may be changed, or at prices related to prevailing market prices
or at negotiated prices. The Company also may, from time to time, authorize
firms acting as the Company's agents to offer and sell the Debt Securities upon
the terms and conditions as shall be set forth in any Prospectus Supplement. In
connection with the sale of Debt Securities, underwriters may be deemed to have
received compensation from the Company in the form of underwriting discounts or
commissions and may also receive commissions from purchasers of Debt Securities
for whom they may act as agent. Underwriters may sell Debt Securities to or
through dealers, and such dealers may receive compensation in the form of
discounts, concessions or commissions from the underwriters and/or commissions
(which may be changed from time to time) from the purchasers for whom they may
act as agent.
 
     Any underwriting compensation paid by the Company to underwriters or agents
in connection with the offering of Debt Securities, and any discounts,
concessions or commissions allowed by underwriters to participating dealers,
will be set forth in an applicable Prospectus Supplement. Underwriters, dealers
and agents participating in the distribution of the Debt Securities may be
deemed to be underwriters, and any discounts and commissions received by them
and any profit realized by them on resale of the Debt Securities may be deemed
to be underwriting discounts and commissions under the Securities Act.
Underwriters, dealers
 
                                       14
<PAGE>   16
 
and agents may be entitled, under agreements with the Company and Aetna, to
indemnification against and contribution toward certain civil liabilities,
including liabilities under the Securities Act, and to reimbursement by the
Company for certain expenses.
 
     Underwriters, dealers and agents may engage in transactions with, or
perform services for, or be customers of, the Company and Aetna in the ordinary
course of business.
 
     If so indicated in an applicable Prospectus Supplement, the Company will
authorize dealers acting as the Company's agents to solicit offers by certain
institutions to purchase Debt Securities from the Company at the public offering
price set forth in such Prospectus Supplement pursuant to Delayed Delivery
Contracts ("Contracts") providing for payment and delivery on the date or dates
stated in such Prospectus Supplement. Each Contract will be for an amount
specified in the applicable Prospectus Supplement. Institutions with whom
Contracts, when authorized, may be made include commercial and savings banks,
insurance companies, pension funds, investment companies, educational and
charitable institutions and other institutions, but will in all cases be subject
to the approval of the Company. Contracts will not be subject to any conditions
except that (i) the purchase by an institution of the Debt Securities covered by
its Contracts shall not at the time of delivery be prohibited under the laws of
any jurisdiction in the United States to which such institution is subject and
(ii) if the Debt Securities are being sold to underwriters, the Company shall
have sold to such underwriters such amount specified in the applicable
Prospectus Supplement. Agents and underwriters will have no responsibility in
respect of the delivery or performance of Contracts.
 
     The Debt Securities may or may not be listed on a national securities
exchange or a foreign securities exchange. No assurances can be given that there
will be a market for the Debt Securities.
 
                           VALIDITY OF THE SECURITIES
 
     Unless otherwise indicated in the applicable Prospectus Supplement, the
validity of the Debt Securities and the Debt Guarantees offered hereby will be
passed upon for the Company and Aetna, respectively, by Thomas J. Calvocoressi,
counsel to the Company and Aetna, and Davis Polk & Wardwell, 450 Lexington
Avenue, New York, New York 10017, and for any agents or underwriters by Sullivan
& Cromwell, 125 Broad Street, New York, New York 10004. Davis Polk & Wardwell
and Sullivan & Cromwell will rely upon the opinion of Thomas J. Calvocoressi as
to certain matters governed by Connecticut law. As of May 31, 1996 and giving
effect to the Mergers, Thomas J. Calvocoressi beneficially owned 558 shares, and
had options to purchase 21,250 shares, of Aetna's Common Stock.
 
                                    EXPERTS
 
     The consolidated financial statements and schedules of the Company and
Subsidiaries as of December 31, 1995 and 1994, and for each of the years in the
three-year period ended December 31, 1995 which are incorporated by reference in
the Company's Annual Report on Form 10-K for the year ended December 31, 1995,
have been incorporated by reference in this Prospectus in reliance upon the
report of KPMG Peat Marwick LLP, independent certified public accountants, and
upon the authority of said firm as experts in accounting and auditing. The
report of KPMG Peat Marwick LLP covering the December 31, 1995 consolidated
financial statements of the Company and Subsidiaries refers to the Company's
changes in 1993 in its method of accounting for certain investments in debt and
equity securities, postemployment benefits, workers' compensation life table
indemnity reserves and retrospectively rated reinsurance contracts.
 
     The Consolidated Balance Sheet of Aetna Inc. as of April 22, 1996 which is
included in the Company's Current Report on Form 8-K, dated June 28, 1996, has
been incorporated in this Prospectus in reliance upon the report of KPMG Peat
Marwick LLP, independent certified public accountants, and upon the authority of
said firm as experts in accounting and auditing.
 
     With respect to the unaudited interim financial information of the Company
incorporated by reference in this Prospectus and of the Company and Aetna to be
incorporated by reference in this Prospectus, the independent certified public
accountants have reported and may report that they applied limited procedures in
 
                                       15
<PAGE>   17
 
accordance with professional standards for a review of such information.
However, any separate report included in the Company's or Aetna's Quarterly
Reports on Form 10-Q and incorporated by reference herein states and will state
that they did not audit and they do not express an opinion on that interim
financial information. Accordingly, the degree of reliance on any report on such
information should be restricted in light of the limited nature of the review
procedures applied. The accountants are not subject to the liability provisions
of Section 11 of the Securities Act for any report on the unaudited interim
financial information because that report is not a "report" or a "part" of the
Registration Statement prepared or certified by the accountants within the
meaning of Sections 7 and 11 of the Securities Act.
 
     The consolidated financial statements of U.S. Healthcare, Inc. incorporated
by reference in U.S. Healthcare, Inc.'s Annual Report on Form 10-K, as amended,
for the year ended December 31, 1995, have been audited by Ernst & Young LLP,
independent auditors, as set forth in their report thereon incorporated by
reference therein and incorporated herein by reference. Such consolidated
financial statements are incorporated herein by reference in reliance upon such
report given upon the authority of such firm as experts in accounting and
auditing.
 
                                       16
<PAGE>   18
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
     The following table sets forth the expenses in connection with the issuance
and distribution of the securities being registered. Except for the SEC
Registration Fee, all amounts shown are estimates.
 
<TABLE>
    <S>                                                                        <C>
    SEC Registration Fee...................................................    $  500,000
    Accounting Fees and Expenses...........................................       120,000
    Legal Fees and Expenses................................................       200,000
    Blue Sky Fees and Expenses.............................................        75,000
    Printing and Engraving Expenses........................................        80,000
    Trustee's Fees and Expenses............................................        27,500
    Rating Agency Fees.....................................................       500,000
    Miscellaneous..........................................................        22,500
                                                                                   ------
              Total........................................................    $1,525,000
                                                                                   ======
</TABLE>
 
ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     The Registrants are Connecticut corporations. Section 33-320a of the
Connecticut General Statutes ("C.G.S.") provides that a Connecticut corporation
shall, under certain circumstances, indemnify its shareholders, directors,
officers, employees, agents and certain other persons.
 
     Subsection (b) of C.G.S. Section 33-320a provides that a corporation shall
indemnify any director or officer of the corporation or an eligible outside
party, who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding whether civil,
criminal, administrative or investigative (other than an action by or in the
right of the corporation), against judgments, fines, penalties, amounts paid in
settlement and reasonable expenses (including attorneys' fees) actually incurred
by such person in connection with such action, suit or proceeding, provided (1)
that such person was successful on the merits in the defense of such action,
suit or proceeding, or (2) that it shall be concluded that such person acted in
good faith and in a manner he or she reasonably believed to be in the best
interests of the corporation and, with respect to any criminal action or
proceeding, provided that such person had no reason to believe his or her
conduct was unlawful, or (3) a court shall have determined that in view of all
the circumstances, such person is fairly and reasonably entitled to be
indemnified, and then for such amount as the court shall determine; except that,
in connection with an alleged claim based upon the purchase or sale of
securities, the corporation shall only indemnify such person after a court shall
have determined that in view of all the circumstances, he or she is fairly and
reasonably entitled to be indemnified, and then for such amount as the court
shall determine.
 
     Subsection (c) of C.G.S. Section 33-320a provides that, where a director or
officer was or is a party or was threatened to be made a party to a proceeding
by or in the right of the corporation, the corporation shall indemnify him or
her against expenses (including attorneys' fees) actually and reasonably
incurred by him or her in connection with the proceeding or any appeal therein,
in relation to matters as to which he or she is finally adjudged not to have
breached his or her duty to the corporation. The corporation shall also
indemnify a director or officer if a court determines that in view of all the
circumstances, such person is fairly and reasonably entitled to be indemnified;
however, in such a situation, the individual shall only be indemnified for such
amount as the court determines to be appropriate. Furthermore, the statute
provides that the corporation shall not indemnify a director or officer for
amounts paid to the corporation, to a plaintiff or to counsel for a plaintiff in
settling or otherwise disposing of a threatened or pending action, with or
without court approval, or for expenses incurred in defending a threatened
action or a pending action which is settled or otherwise disposed of without
court approval.
 
                                      II-1
<PAGE>   19
 
     C.G.S. Section 33-320a is an exclusive statute. A corporation cannot
indemnify a director or officer to an extent either greater or less than that
authorized by the statute; provided, however, that the statute specifically
authorizes a corporation to procure insurance providing greater indemnification
rights than those set out in C.G.S. Section 33-320a.
 
     Consistent with the statute, Aetna Life and Casualty Company has procured,
and Aetna Inc. intends to procure, insurance from several carriers for their
respective directors and officers which supplements the indemnification rights
provided to those individuals by C.G.S. Section 33-320a. Unlike the statute,
these policies do not require an after-the-fact determination of good faith in
order for the insured director or officer to receive the benefits provided under
the policies nor do they require affirmative judicial or corporate action as a
prerequisite to the insurance company's duty to defend (and pay for the defense
of) the insured director or officer under the policies. Furthermore, the
insurance policies cover or will cover directors and officers for any acts not
specifically excluded for which the director or officer is not eligible for
indemnification under C.G.S. Section 33-320a to the extent such coverage does
not violate public policy.
 
     As permitted under Connecticut law, the Registrants' Certificates of
Incorporation limit the personal liability of directors for monetary damages to
the Registrants and their respective shareholders for a breach of their
fiduciary duty as directors to the amount of their compensation for serving the
applicable Registrant as directors during the year of the violation. These
provisions do not eliminate the liability of a director if such breach (i)
involved a knowing and culpable violation of law by the director, (ii) enabled
the director or an associate (as defined) to receive an improper personal gain,
(iii) showed a lack of good faith and a conscious disregard for the duty of the
director to the Registrants under circumstances in which the director was aware
that his or her conduct or omission created an unjustifiable risk of serious
injury to the Registrants, (iv) constituted a sustained and unexcused pattern of
inattention that amounted to an abdication of the director's duty to the
Registrants or (v) created liability under C.G.S. Section 33-321 (relating to
the distribution of assets of the Registrants, whether by dividend, purchase or
redemption of shares or otherwise, in violation of the Connecticut corporation
law).
 
     Reference is made to the Underwriting Agreement filed as Exhibit 1.1 to
this Registration Statement for certain provisions relating to the
indemnification of directors and officers of Aetna and the Company against
certain liabilities, including liabilities under the Securities Act.
 
ITEM 16.  EXHIBITS.
 
<TABLE>
    <S>     <C>  <C>
       1.1   --  Form of Underwriting Agreement for Debt Securities
       4.1   --  Form of Senior Indenture between the Company, Aetna and State Street Bank and
                   Trust Company of Connecticut, National Association, as Trustee (including
                   the forms of the Senior Debt Securities and Senior Debt Guarantees)
       4.2   --  Form of Subordinated Indenture between the Company, Aetna and State Street
                   Bank and Trust Company of Connecticut, National Association, as Trustee
                   (including the forms of the Subordinated Debt Securities and Subordinated
                   Debt Guarantees)
       5.1   --  Opinion of Thomas J. Calvocoressi, counsel to the Company and Aetna
       5.2   --  Opinion of Davis Polk & Wardwell
      12.1   --  Computation of Ratio of Earnings to Fixed Charges of the Company incorporated
                   by reference to Exhibit 12 of the Company's Quarterly Report on Form 10-Q
                   for the three month period ended March 31, 1996, as filed on April 26, 1996.
      15.1   --  Letter from KPMG Peat Marwick LLP re: Unaudited Interim Financial Information
      23.1   --  Consent of Thomas J. Calvocoressi (contained in Exhibit 5.1)
      23.2   --  Consent of Davis Polk & Wardwell (contained in Exhibit 5.2)
      23.3   --  Consent of KPMG Peat Marwick LLP re: Aetna Life and Casualty Company
      23.4   --  Consent of KPMG Peat Marwick LLP re: Aetna Inc.
      23.5   --  Consent of Ernst & Young LLP
</TABLE>
 
                                      II-2
<PAGE>   20
 
<TABLE>
    <S>     <C>  <C>
      24.1   --  Powers of Attorney for the Company
      24.2   --  Powers of Attorney for Aetna
      25.1   --  Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of
                   State Street Bank and Trust Company of Connecticut, National Association, as
                   Trustee under the Senior Indenture
      25.2   --  Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of
                   State Street Bank and Trust Company of Connecticut, National Association, as
                   Trustee under the Subordinated Indenture
      28     --  Information from Reports Furnished to State Insurance Regulatory Authorities;
                   incorporated herein by reference to Exhibit 28 of the Company's 1995 Form
                   10-K, filed on February 26, 1996 (File No. 1-5704)
</TABLE>
 
ITEM 17.  UNDERTAKINGS.
 
     The undersigned registrants hereby undertake:
 
          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this Registration Statement:
 
             (i) To include any prospectus required by Section 10(a)(3) of the
        Securities Act;
 
             (ii) To reflect in the prospectus any facts or events arising after
        the effective date of the Registration Statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set forth
        in the Registration Statement. Notwithstanding the foregoing, any
        increase or decrease in volume of securities offered (if the total
        dollar value of securities offered would not exceed that which was
        registered) and any deviation from the low or high end of the estimated
        maximum offering range may be reflected in the form of prospectus filed
        with the Commission pursuant to Rule 424(b) if, in the aggregate, the
        changes in volume and price represent no more than 20 percent change in
        the maximum aggregate offering price set forth in the "Calculation of
        Registration Fee" table in the effective Registration Statement;
 
             (iii) To include any material information with respect to the plan
        of distribution not previously disclosed in the Registration Statement
        or any material change to such information in the Registration
        Statement;
 
     provided, however, that paragraphs (i) and (ii) do not apply if the
     information required to be included in a post-effective amendment by those
     paragraphs is contained in periodic reports filed with or furnished to the
     Commission by Aetna or the Company pursuant to Section 13 or Section 15(d)
     of the Exchange Act that are incorporated by reference in the Registration
     Statement.
 
          (2) That, for the purpose of determining any liability under the
     Securities Act, each such post-effective amendment shall be deemed to be a
     new registration statement relating to the securities offered therein, and
     the offering of such securities at that time shall be deemed to be the
     initial bona fide offering thereof.
 
          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.
 
          (4) That, for purposes of determining any liability under the
     Securities Act, each filing of Aetna's annual report pursuant to Section
     13(a) or Section 15(d) of the Exchange Act that is incorporated by
     reference in this Registration Statement shall be deemed to be a new
     registration statement relating to the securities offered therein, and the
     offering of such securities at that time shall be deemed to be the initial
     bona fide offering thereof.
 
          (5) That for purposes of determining any liability under the
     Securities Act, the information omitted from the form of prospectus filed
     as part of this Registration Statement in reliance upon Rule 430A and
 
                                      II-3
<PAGE>   21
 
     contained in a form of prospectus filed by the Registrants pursuant to Rule
     424(b)(1) or (4) or 497(h) under the Securities Act shall be deemed to be
     part of this Registration Statement as of the time it was declared
     effective.
 
          (6) That for the purpose of determining any liability under the
     Securities Act, each post-effective amendment that contains a form of
     prospectus shall be deemed to be a new registration statement relating to
     the securities offered therein, and the offering of such securities at that
     time shall be deemed to be the initial bona fide public offering thereof.
 
          (7) Insofar as indemnification (other than pursuant to the insurance
     described in Item 15 above) for liabilities arising under the Securities
     Act may be permitted to directors, officers and controlling persons of the
     registrants pursuant to the foregoing provisions, or otherwise, the
     registrants have been advised that in the opinion of the Commission such
     indemnification is against public policy as expressed in the Securities Act
     and is, therefore, unenforceable. In the event that a claim for
     indemnification against such liabilities (other than the payment by either
     of the registrants of expenses incurred or paid by a director, officer or
     controlling person of the registrants in the successful defense of any
     action, suit or proceeding) is asserted by such director, officer or
     controlling person in connection with the securities being registered, the
     registrants will, unless in the opinion of their counsel the matter has
     been settled by controlling precedent, submit to a court of appropriate
     jurisdiction the question whether such indemnification by them is against
     public policy as expressed in the Securities Act and will be governed by
     the final adjudication of such issue.
 
                                      II-4
<PAGE>   22
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, Aetna Life and
Casualty Company certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-3 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Hartford, State of Connecticut on June 28, 1996.
 
                                          AETNA LIFE AND CASUALTY COMPANY
 
                                          By /s/  RICHARD L. HUBER
 
                                            ------------------------------------
                                            Name: Richard L. Huber
                                            Title: Vice Chairman for Strategy
                                             and Finance
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following directors and officers
of Aetna Life and Casualty Company in the capacities indicated on June 28, 1996.
 
<TABLE>
<CAPTION>
                   SIGNATURE                                         TITLE
- -----------------------------------------------   --------------------------------------------
<S>                                               <C>
                       *                                Chairman, President and Director
- -----------------------------------------------          (Principal Executive Officer)
               Ronald E. Compton

- -----------------------------------------------                     Director
             William H. Donaldson

                       *                                            Director
- -----------------------------------------------
           Barbara Hackman Franklin

                       *                                            Director
- -----------------------------------------------
                Earl G. Graves

                       *                                            Director
- -----------------------------------------------
               Gerald Greenwald

- -----------------------------------------------                     Director
               Ellen M. Hancock

- -----------------------------------------------                     Director
               Michael H. Jordan

                       *                                            Director
- -----------------------------------------------
                Jack D. Kuehler

                       *                                            Director
- -----------------------------------------------
             Frank R. O'Keefe, Jr.
</TABLE>
 
                                      II-5
<PAGE>   23
 
<TABLE>
<CAPTION>
                   SIGNATURE                                         TITLE
- -----------------------------------------------   --------------------------------------------
<S>                                               <C>
- -----------------------------------------------                     Director
                 Judith Rodin

                       *                             Vice Chairman for Strategy and Finance
- -----------------------------------------------          (Principal Financial Officer)
               Richard L. Huber

                       *                            Vice President and Corporate Controller
- -----------------------------------------------                   (Controller)
                Robert J. Price

       *By      /s/  WILLIAM J. CASAZZA
- -----------------------------------------------
              (Attorney-in-Fact)
</TABLE>
 
                                      II-6
<PAGE>   24
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, Aetna Inc. has
duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Hartford, State of
Connecticut, on June 28, 1996.
 
                                          AETNA INC.
 
                                          By /s/  RICHARD L. HUBER
 
                                            ------------------------------------
                                            Name: Richard L. Huber
                                            Title: Vice Chairman for Strategy
                                             and Finance
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following officers and directors
of Aetna Inc. in the capacities indicated on June 28, 1996.
 
<TABLE>
<CAPTION>
                   SIGNATURE                                         TITLE
- -----------------------------------------------   --------------------------------------------
<S>                                               <C>
                       *                                Chairman, President and Director
- -----------------------------------------------          (Principal Executive Officer)
               Ronald E. Compton
                       *                                   Vice Chairman for Strategy
- -----------------------------------------------             and Finance and Director
               Richard L. Huber                   (Principal Financial and Accounting Officer)
                       *                                            Director
- -----------------------------------------------
            James H. Dickerson, Jr.

- -----------------------------------------------                     Director
                David F. Simon


*By      /s/  WILLIAM J. CASAZZA
- -----------------------------------------------
(Attorney-in-Fact)
</TABLE>
 
                                      II-7
<PAGE>   25
 
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                                           DESCRIPTION
- ------         --------------------------------------------------------------------------------
<C>      <C>   <S>
   1.1     --  Form of Underwriting Agreement for Debt Securities
   4.1     --  Form of Senior Indenture between the Company, Aetna and State Street Bank and
               Trust Company of Connecticut, National Association, as Trustee (including the
               forms of the Senior Debt Securities and Senior Debt Guarantees)
   4.2     --  Form of Subordinated Indenture between the Company, Aetna and State Street Bank
               and Trust Company of Connecticut, National Association, as Trustee (including
               the forms of the Subordinated Debt Securities and Subordinated Debt Guarantees)
   5.1     --  Opinion of Thomas J. Calvocoressi, counsel to the Company and Aetna
   5.2     --  Opinion of Davis Polk & Wardwell
  12.1     --  Computation of Ratio of Earnings to Fixed Charges of the Company incorporated by
               reference to Exhibit 12 of the Company's Quarterly Report on Form 10-Q for the
               three month period ended March 31, 1996, as filed on April 26, 1996
  15.1     --  Letter from KPMG Peat Marwick LLP re: Unaudited Interim Financial Information
  23.1     --  Consent of Thomas J. Calvocoressi (contained in Exhibit 5.1)
  23.2     --  Consent of Davis Polk & Wardwell (contained in Exhibit 5.2)
  23.3     --  Consent of KPMG Peat Marwick LLP re: Aetna Life and Casualty Company
  23.4     --  Consent of KPMG Peat Marwick LLP re: Aetna Inc.
  23.5     --  Consent of Ernst & Young LLP
  24.1     --  Powers of Attorney for the Company
  24.2     --  Powers of Attorney for Aetna
  25.1     --  Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of State
               Street Bank and Trust Company of Connecticut, National Association, as Trustee
               under the Senior Indenture
  25.2     --  Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of State
               Street Bank and Trust Company of Connecticut, National Association, as Trustee
               under the Subordinated Indenture
    28     --  Information from Reports Furnished to State Insurance Regulatory Authorities;
               incorporated herein by reference to Exhibit 28 of the Company's 1995 Form 10-K,
               filed on February 26, 1996 (File No. 1-5704)
</TABLE>

<PAGE>   1
                                                                   Exhibit 1.1
                              AETNA SERVICES, INC.

                                   AETNA INC.

                           Guaranteed Debt Securities

                             Underwriting Agreement

                                                            [           ], 199_

To the Underwriters
to be named in the applicable
Pricing Agreement
supplemental hereto

Ladies and Gentlemen:

                  From time to time Aetna Services, Inc. a Connecticut
corporation (the "Company"), and Aetna Inc., a Connecticut corporation (the
"Guarantor"), propose to enter into one or more Pricing Agreements (each a
"Pricing Agreement") in the form of Annex I hereto, with such additions and
deletions as the parties thereto may determine, and, subject to the terms and
conditions stated herein and therein, to issue and sell to the firms named in
Schedule I to the applicable Pricing Agreement (such firms constituting the
"Underwriters" with respect to such Pricing Agreement and the securities
specified therein) certain debt securities of the Company (the "Securities")
specified in Schedule II to such Pricing Agreement (with respect to such Pricing
Agreement, the "Designated Securities"), guaranteed by the Guarantor, less the
Designated Securities covered by Delayed Delivery Contracts (as defined in
Section 3 hereof), if any, as provided in Section 3 hereof and as may be
specified in Schedule II to such Pricing Agreement (with respect to such Pricing
Agreement, any Designated Securities to be covered by Delayed Delivery Contracts
being herein sometimes referred to as "Contract Securities" and the Designated
Securities to be purchased by the Underwriters (after giving effect to the
deduction, if any, for Contract Securities) being herein sometimes referred to
as "Underwriters' Securities").
<PAGE>   2
                 The terms and rights of any particular issuance of Designated
Securities shall be as specified in the Pricing Agreement relating thereto and
in or pursuant to the indenture (the "Indenture") identified in Schedule II to
such Pricing Agreement. The Designated Securities shall be guaranteed (the
"Guarantees") by the Guarantor as specified in the Pricing Agreement relating to
such Designated Securities and in or pursuant to the Indenture identified in
Schedule II to such Pricing Agreement.

                  1. Particular sales of Designated Securities may be made from
time to time to the Underwriters of such Securities, for whom the firms
designated as representatives of the Underwriters of such Securities in the
Pricing Agreement relating thereto will act as representatives (the
"Representatives"). The term "Representatives" also refers to a single firm
acting as sole representative of the Underwriters and to Underwriters who act
without any firm being designated as their representative. Except as
incorporated by reference into a Pricing Agreement, this Underwriting Agreement
shall not be construed as an obligation of the Company or the Guarantor to sell
any of the Securities guaranteed by the Guarantor or as an obligation of any of
the Underwriters to purchase any of the Securities. The obligation of the
Company to issue and sell any of the Securities, the obligation of the Guarantor
to issue its Guarantee of any of the Securities and the obligation of any of the
Underwriters to purchase any of the Securities shall be evidenced by the Pricing
Agreement with respect to the Designated Securities specified therein. Each
Pricing Agreement shall specify, among other things, the aggregate principal
amount of such Designated Securities, the initial public offering price of such
Designated Securities, the purchase price to the Underwriters of such Designated
Securities, the names of the Underwriters of such Designated Securities, the
names of the Representatives of such Underwriters, the principal amount of such
Designated Securities to be purchased by each Underwriter and whether any of
such Designated Securities shall be covered by Delayed Delivery Contracts, and
shall set forth the date, time and manner of delivery of such Designated
Securities and payment therefor. The Pricing Agreement shall also specify (to
the extent not set forth in the Indenture and the registration statement and
prospectus with respect thereto) the terms of such Designated Securities. A
Pricing Agreement shall be in the form of an executed writing (which may be in
counterparts), and may be evidenced by an exchange of telegraphic communications
or any other rapid transmission device designed to produce a written record of
communications transmitted. The

                                        2
<PAGE>   3
obligations of the Underwriters under this Agreement and each Pricing Agreement
shall be several and not joint.

                  2.   The Company and the Guarantor jointly and
severally represent and warrant to, and agree with, each of
the Underwriters that:

                           (a) A registration statement in respect of the
         Securities and the Guarantees has been filed with the Securities and
         Exchange Commission (the "Commission"); such registration statement and
         any post-effective amendment thereto, each in the form heretofore
         delivered or to be delivered to the Representatives (with exhibits
         thereto) for delivery to each of the other Underwriters (without
         exhibits thereto), have been declared effective by the Commission in
         such form; no other document with respect to such registration
         statement or document incorporated by reference therein has been filed
         or transmitted for filing with the Commission prior to the effective
         date of the registration statement; and no stop order suspending the
         effectiveness of such registration statement has been issued and no
         proceeding for that purpose has been initiated or, to the knowledge of
         the Company or the Guarantor, threatened by the Commission. Any
         preliminary prospectus included in such registration statement or filed
         with the Commission pursuant to Rule 424(a) of the rules and
         regulations of the Commission under the Securities Act of 1933, as
         amended (the "Act"), is hereinafter called a "Preliminary Prospectus";
         the various parts of such registration statement, including all
         exhibits thereto, but excluding Form T-1, each as amended at the time
         such part of the registration statement became effective are
         hereinafter collectively called the "Registration Statement", provided
         if the Company and the Guarantor have filed an abbreviated registration
         statement to register additional Securities and Guarantees pursuant to
         Rule 462(b) under the Act (the "Rule 462 Registration Statement"), then
         any reference in this Agreement or a Pricing Agreement to the term
         "Registration Statement" shall be deemed to include such Rule 462
         Registration Statement; the prospectus relating to the Securities and
         the Guarantees, in the form in which it has most recently been filed,
         or transmitted for filing, with the Commission on or prior to the date
         of this Agreement, is hereinafter called the "Prospectus"; any
         reference herein to any Preliminary Prospectus or the Prospectus shall
         be deemed to refer to and include the documents incorporated by
         reference therein pursuant to the

                                        3
<PAGE>   4
         applicable form under the Act, as of the date of such Preliminary
         Prospectus or Prospectus, as the case may be; any reference to any
         amendment or supplement to any Preliminary Prospectus or the Prospectus
         shall be deemed to refer to and include any documents filed with the
         Commission after the date of such Preliminary Prospectus or Prospectus,
         as the case may be, under the Securities Exchange Act of 1934, as
         amended (the "Exchange Act"), and incorporated by reference in such
         Preliminary Prospectus or Prospectus, as the case may be; any reference
         to any amendment to the Registration Statement shall be deemed to refer
         to and include any annual report of the Guarantor filed pursuant to
         Section 13(a) or 15(d) of the Exchange Act after the effective date of
         the Registration Statement that is incorporated by reference in the
         Registration Statement; and any reference to the Prospectus as amended
         or supplemented shall be deemed to refer to the Prospectus as amended
         or supplemented in relation to the applicable Designated Securities in
         the form in which it is first filed with the Commission pursuant to
         Rule 424(b) under the Act in accordance with Section 5(a) hereof,
         including any documents incorporated by reference therein as of the
         date of such filing;

                           (b) The Registration Statement and the Prospectus
         conform, and any further amendments or supplements to the Registration
         Statement or the Prospectus will conform, in all material respects to
         the requirements of the Act and the Trust Indenture Act of 1939, as
         amended (the "Trust Indenture Act"), and the rules and regulations of
         the Commission thereunder and do not and will not, as of the applicable
         effective date as to the Registration Statement and any amendment
         thereto and as of the applicable filing date as to the Prospectus and
         any amendment or supplement thereto, contain an untrue statement of a
         material fact or omit to state a material fact required to be stated
         therein or necessary to make the statements therein (i) in the case of
         the Registration Statement, not misleading and (ii) in the case of the
         Prospectus, in light of the circumstances under which they were made,
         not misleading; provided, however, that this representation and
         warranty shall not apply to any statements or omissions made in
         reliance upon and in conformity with information furnished in writing
         to the Company or the Guarantor by an Underwriter of Designated
         Securities through the Representatives for use in the Prospectus as
         amended or supplemented relating to such Securities;

                                        4
<PAGE>   5
                           (c) Each of the Company and the Guarantor has been
         duly incorporated and is validly existing as a corporation in good
         standing under the laws of the State of Connecticut; each of the
         Company and the Guarantor is duly qualified to transact business and is
         in good standing in each jurisdiction in which the conduct of its
         business or its ownership or leasing of property requires such
         qualification, except where the failure to be so qualified or in good
         standing would not have a material adverse effect on the financial
         condition of the Guarantor and its subsidiaries taken as a whole;

                           (d) The Securities have been duly authorized by the
         Company; and, when Designated Securities are issued, executed,
         authenticated, delivered and paid for pursuant to this Agreement and
         the Pricing Agreement with respect to such Designated Securities and
         the Indenture and, in the case of any Contract Securities, pursuant to
         Delayed Delivery Contracts with respect to such Contract Securities,
         such Designated Securities will have been duly issued, executed and
         delivered and will constitute valid and legally binding obligations of
         the Company enforceable against the Company in accordance with their
         terms, subject to (1) bankruptcy, insolvency, reorganization,
         fraudulent transfer, moratorium and other similar laws now or hereafter
         in effect relating to or affecting creditors' rights generally and the
         rights of creditors of insurance companies generally and (2) general
         principles of equity (regardless of whether considered in a proceeding
         at law or in equity);

                           (e) The Guarantees have been duly authorized by the
         Guarantor; and, when (i) the Guarantees endorsed on the Designated
         Securities are issued and executed by the Guarantor pursuant to the
         Indenture and (ii) such Designated Securities are issued, executed,
         authenticated, delivered and paid for pursuant to this Agreement and
         the Pricing Agreement with respect to such Designated Securities and
         the Indenture and, in the case of any Contract Securities, pursuant to
         Delayed Delivery Contracts with respect to such Contract Securities,
         such Guarantees will have been duly issued, executed and delivered and
         will constitute valid and legally binding obligations of the Guarantor
         enforceable against the Guarantor in accordance with their terms,
         subject to (1) bankruptcy, insolvency, reorganization, fraudulent
         transfer, moratorium and other similar laws now or hereafter in effect
         relating to or affecting creditors' rights generally and the

                                        5
<PAGE>   6
         rights of creditors of insurance companies generally and (2) general
         principles of equity (regardless of whether considered in a proceeding
         at law or in equity);

                           (f) The Indenture, which will be substantially in one
         of the forms filed as an exhibit to the Registration Statement, has
         been duly authorized by the Company and the Guarantor and, at the Time
         of Delivery (as defined in Section 4 hereof) for such Designated
         Securities, the Indenture will be duly qualified under the Trust
         Indenture Act and, assuming due authorization, execution and delivery
         by the trustee under such Indenture (the "Trustee"), the Indenture will
         constitute a valid and legally binding instrument of the Company and
         the Guarantor enforceable against the Company and the Guarantor in
         accordance with its terms, subject to (1) bankruptcy, insolvency,
         reorganization, fraudulent transfer, moratorium and other similar laws
         now or hereafter in effect relating to or affecting creditors' rights
         generally and the rights of creditors of insurance companies generally
         and (2) general principles of equity (regardless of whether considered
         in a proceeding at law or in equity); and the Indenture conforms, and
         the Designated Securities and the Guarantees will conform, in all
         material respects, to the descriptions thereof contained in the
         Prospectus as amended or supplemented with respect to such Designated
         Securities;

                           (g) The issue and sale of the Securities, the
         issuance of the Guarantees and the compliance by the Company and the
         Guarantor with all of the provisions of the Designated Securities and
         the Guarantees, respectively, the Indenture, each of the Delayed
         Delivery Contracts, if any, this Agreement and any Pricing Agreement,
         and the consummation of the transactions herein and therein
         contemplated will not (1) conflict with or result in a breach or
         violation by the Company or the Guarantor, as applicable, of any of the
         terms or provisions of, or constitute a default by the Company or the
         Guarantor, as applicable, under, any indenture, mortgage, deed of
         trust, loan agreement or other similar agreement or instrument to which
         the Company or the Guarantor, as the case may be, is a party or by
         which the Company or the Guarantor, as the case may be, is bound or to
         which any of the property or assets of the Company or the Guarantor, as
         the case may be, is subject, except, in all such cases, for such
         conflicts, breaches, violations or defaults as would not have a
         material adverse effect on the financial

                                        6
<PAGE>   7
         condition of the Guarantor and its subsidiaries taken as a whole, or
         would not have a material adverse effect on the issuance or sale of the
         Designated Securities or the issuance of the Guarantees, and (2) result
         in any violation of (A) the provisions of the Certificate of
         Incorporation or By-Laws of the Company or the Guarantor or (B) any
         statute of the United States or the State of Connecticut or any order,
         rule or regulation of any court or governmental agency or body of the
         United States or the State of Connecticut having jurisdiction over the
         Company or the Guarantor or any of their respective properties;
         provided, however that in the case of clause (B) of this paragraph
         2(g), this representation and warranty shall not extend to such
         violations as would not have a material adverse effect on the financial
         condition of the Guarantor and its subsidiaries taken as a whole or
         would not have a material adverse effect on the issuance or sale of the
         Designated Securities or the issuance of the Guarantees; provided
         further, that insofar as this representation and warranty relates to
         the performance by the Company or the Guarantor of its obligations
         under the Indenture, this Agreement, the Pricing Agreement relating to
         the Designated Securities, the Delayed Delivery Contracts, if any, and
         the Designated Securities and the Guarantees, such performance is
         subject to bankruptcy, insolvency, reorganization, fraudulent transfer,
         moratorium and other similar laws now or hereafter in effect relating
         to or affecting creditors' rights generally and the rights of creditors
         of insurance companies generally;

                           (h) No consent, approval, authorization, order,
         registration, filing or qualification of or with any court or
         governmental agency or body of the United States or the State of
         Connecticut is required for the issue and sale of the Securities by the
         Company or the issuance of the Guarantees by the Guarantor or the
         consummation by the Company and the Guarantor of the transactions
         contemplated by this Agreement or any Pricing Agreement or the
         Indenture or any Delayed Delivery Contract except such as have been, or
         will have been prior to the Time of Delivery, obtained under the Act
         and the Trust Indenture Act and such consents, approvals,
         authorizations, orders, registrations, filings or qualifications as may
         be required under state securities or Blue Sky laws or insurance
         securities laws of any such jurisdiction in connection with the
         purchase and distribution of the Securities by the Underwriters, and
         except those which, if not obtained, will not have a material adverse
         effect on

                                        7
<PAGE>   8
         the financial condition of the Guarantor and its subsidiaries taken as
         a whole or would not have a material adverse effect on the issuance or
         sale of the Securities by the Company or the issuance of the Guarantees
         by the Guarantor;

                           (i) In the event any of the Securities are purchased
         pursuant to Delayed Delivery Contracts, each of such Delayed Delivery
         Contracts has been duly authorized by the Company and the Guarantor
         and, when executed and delivered by the Company, the Guarantor and the
         purchaser named therein, will constitute a valid and legally binding
         agreement of the Company and the Guarantor enforceable against the
         Company and the Guarantor in accordance with its terms, subject to (1)
         bankruptcy, insolvency, reorganization, fraudulent transfer, moratorium
         and other similar laws now or hereafter in effect relating to or
         affecting creditors' rights generally and the rights of creditors of
         insurance companies generally and (2) general principles of equity
         (regardless of whether considered in a proceeding at law or in equity);
         and any Delayed Delivery Contracts will conform, in all material
         respects, to the description thereof, contained in the Prospectus as
         amended or supplemented with respect to such Designated Securities; and

                           (j) All of the outstanding shares of capital stock of
         the Company, Aetna Life Insurance Company, Aetna Life Insurance and
         Annuity Company and U.S. Healthcare, Inc. have been duly authorized and
         validly issued and are fully paid and non-assessable, and (except for
         directors' qualifying shares, if any) are owned directly or indirectly
         by the Guarantor.

                  3. Upon the execution of the Pricing Agreement applicable to
any Designated Securities, the several Underwriters propose to offer such
Underwriters' Securities for sale upon the terms and conditions set forth in the
Prospectus as amended or supplemented.

                  The Company may specify in Schedule II to the Pricing
Agreement applicable to any Designated Securities that the Underwriters are
authorized to solicit offers to purchase Designated Securities from the Company
pursuant to delayed delivery contracts (herein called "Delayed Delivery
Contracts"), substantially in the form of Annex II attached hereto but with such
changes therein as the Representatives and the Company may authorize or approve.
If so specified, the Underwriters will endeavor to make such arrangements, and
as compensation therefor the Company will pay to the

                                        8
<PAGE>   9
Representatives, for the accounts of the Underwriters, at the Time of Delivery,
such commission, if any, as may be set forth in such Pricing Agreement. Delayed
Delivery Contracts, if any, are to be with investors of the types described in
the Prospectus as amended or supplemented and subject to other conditions
therein set forth. The Underwriters will not have any responsibility with
respect to the validity or performance of any Delayed Delivery Contracts.

                  The principal amount of Contract Securities to be deducted
from the principal amount of Designated Securities to be purchased by each
Underwriter as set forth in Schedule 1 to the Pricing Agreement applicable to
such Designated Securities shall be, in each case, the principal amount of
Contract Securities which the Company has been advised by the Representatives
have been attributed to such Underwriter, provided that, if the Company has not
been so advised, the amount of Contract Securities to be so deducted shall be,
in each case, that proportion of Contract Securities which the principal amount
of Designated Securities to be purchased by such Underwriter under such Pricing
Agreement bears to the total principal amount of the Designated Securities
(rounded as the Representatives may determine). The total principal amount of
Underwriters' Securities to be purchased by all the Underwriters pursuant to
such Pricing Agreement shall be the total principal amount of Designated
Securities set forth in Schedule 1 to such Pricing Agreement less the principal
amount of the Contract Securities so set forth. If the Company determines to
enter into Delayed Delivery Contracts, the Company will deliver to the
Representatives not later than 3:30 p.m., New York City time, on the third
business day preceding the Time of Delivery specified in the applicable Pricing
Agreement (or such other time and date as the Representatives and the Company
may agree upon in writing) a written notice setting forth the principal amount
of Contract Securities.

                  4. Underwriters' Securities having the Guarantee of the
Guarantor endorsed thereon to be purchased by each Underwriter pursuant to the
Pricing Agreement relating thereto, in definitive form to the extent
practicable, and in such authorized denominations and registered in such names
as the Representatives may request upon at least twenty-four hours prior notice
to the Company, shall be delivered by or on behalf of the Company to the
Representatives for the account of such Underwriter, against payment by such
Underwriter or on its behalf of the purchase price therefor by wire transfer to
a bank account specified by the Company and specified in Schedule II, in federal
or other funds immediately available in New York City, all at

                                        9
<PAGE>   10
the place and the time and date specified in such Pricing Agreement or at such
other place and time and date as the Representatives and the Company may agree
upon in writing, such time and date being herein called the "Time of Delivery"
for such Securities.

                  Concurrently with the delivery of and payment for the
Underwriters' Securities, the Company will deliver to the Representatives for
the accounts of the Underwriters a check payable to the order of the party
designated in the Pricing Agreement relating to such Securities in the amount of
any compensation payable by the Company to the Underwriters in respect of any
Delayed Delivery Contracts as provided in Section 3 hereof and the Pricing
Agreement relating to such Securities.

                  5. The Company and the Guarantor agree with each of the
Underwriters of any Designated Securities:

                           (a) To prepare the Prospectus as amended and
         supplemented in relation to the applicable Designated Securities and to
         file such Prospectus pursuant to Rule 424(b) under the Act not later
         than the Commission's close of business on the second business day
         following the execution and delivery of the Pricing Agreement relating
         to the applicable Designated Securities or, if applicable, such other
         time as may be required by Rule 424(b); to advise the Representatives
         promptly of any proposal to amend or supplement the Registration
         Statement or Prospectus as amended or supplemented after the date of
         the Pricing Agreement relating to such Designated Securities and prior
         to the Time of Delivery for such Designated Securities, and afford the
         Representatives a reasonable opportunity to comment on any such
         proposed amendment or supplement; to advise the Representatives of any
         such amendment or supplement promptly after such Time of Delivery for
         so long as the delivery of a prospectus is required under the Act in
         connection with the offering or sale of such Designated Securities; to
         file promptly all reports and any definitive proxy or information
         statements required to be filed by the Guarantor with the Commission
         pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act for
         so long as the delivery of a prospectus is required under the Act in
         connection with the offering or sale of such Designated Securities, and
         during such same period to advise the Representatives, promptly after
         the Company or the Guarantor receives notice thereof, of the time when
         any amendment to the Registration Statement has been filed or becomes

                                       10
<PAGE>   11
         effective or any supplement to the Prospectus or any amended Prospectus
         has been filed with the Commission; for so long as the delivery of a
         prospectus is required under the Act in connection with the offering or
         sale of the Designated Securities, to advise the Representatives
         promptly of the issuance by the Commission of any stop order or of any
         order preventing or suspending the use of any prospectus relating to
         the Designated Securities, of the suspension of the qualification of
         such Designated Securities for offering or sale in any jurisdiction or
         of the initiation or, if known to the Company or the Guarantor,
         threatening of any proceeding for any such purpose, or of any request
         by the Commission for amending or supplementing the Registration
         Statement or Prospectus; and, in the event of the issuance of any such
         stop order or of any such order preventing or suspending the use of any
         prospectus relating to the Securities or suspending any such
         qualification, to use promptly its best efforts to obtain its
         withdrawal;

                           (b) Promptly from time to time to endeavor to take
         such action as the Representatives may reasonably request to qualify
         such Designated Securities and the Guarantees for offering and sale
         under the securities laws of such jurisdictions of the United States,
         Puerto Rico and Guam as the Representatives may reasonably request and
         such other jurisdictions as the Company and the Representatives may
         agree and to comply with such laws so as to permit the continuance of
         sales and dealings therein in such jurisdictions for as long as may be
         necessary to complete the distribution of such Designated Securities,
         provided that in connection therewith neither the Company nor the
         Guarantor shall be required to qualify as a foreign corporation or to
         file a general consent to service of process in any jurisdiction, and
         provided further that in connection therewith neither the Company nor
         the Guarantor shall be required to qualify such Designated Securities
         and Guarantees for offering and sale under the securities laws of any
         such jurisdiction for a period in excess of nine months after the
         initial time of issue of the Prospectus as amended or supplemented
         relating to such Designated Securities;

                           (c) To furnish the Underwriters with copies of the
         Prospectus as amended or supplemented in such quantities as the
         Representatives may from time to time reasonably request, and, if the
         delivery of a prospectus is required at any time in connection with

                                       11
<PAGE>   12
         the offering or sale of the Designated Securities and the related
         Guarantees and if at such time any event shall have occurred as a
         result of which the Prospectus as then amended or supplemented would
         include an untrue statement of a material fact or omit to state any
         material fact necessary in order to make the statements therein, in the
         light of the circumstances under which they were made when such
         Prospectus is delivered, not misleading, or, if for any other reason it
         shall be necessary during such same period to amend or supplement the
         Prospectus in order to comply with the Act or the Exchange Act, to
         notify the Representatives and to file such document and to prepare and
         furnish without charge to each Underwriter and to any dealer in
         securities as many copies as the Representatives may from time to time
         reasonably request of any amended Prospectus or a supplement to the
         Prospectus which will correct such statement or omission or effect such
         compliance; provided, however, that in case any Underwriter is required
         under the Act to deliver a prospectus in connection with the offering
         or sale of the Designated Securities and the related Guarantees at any
         time more than nine months after the date of the Pricing Agreement
         relating to the Designated Securities and the related Guarantees, the
         costs of such preparation and furnishing such amended or supplemented
         Prospectus shall be borne by the Underwriters of such Designated
         Securities;

                           (d) To make generally available to the Company's and
         the Guarantor's securityholders as soon as practicable, but in any
         event not later than eighteen months after the effective date of the
         Registration Statement (as defined in Rule 158(c)), an earning
         statement of the Guarantor and its subsidiaries (which need not be
         audited) complying with Section 11(a) of the Act and the rules and
         regulations of the Commission thereunder (including, at the option of
         the Guarantor Rule 158); and

                           (e) During the period beginning from the date of the
         Pricing Agreement for such Designated Securities and continuing to and
         including the Time of Delivery for such Designated Securities, not to
         offer, sell, contract to sell or otherwise dispose of in the United
         States any debt securities of the Company guaranteed by the Guarantor
         which mature more than one year after such Time of Delivery and which
         are substantially similar to such Designated Securities and the related
         Guarantees, without the prior written

                                       12
<PAGE>   13
         consent of the Representatives, which consent shall not
         be unreasonably withheld.

                  6. The Company covenants and agrees with the several
Underwriters that the Company will pay or cause to be paid the following: (i)
the fees, disbursements and expenses of the Company's and the Guarantor's
counsel and accountants in connection with the registration of the Securities
and the Guarantees under the Act and all other expenses in connection with the
Company's and the Guarantor's preparation, printing and filing of the
Registration Statement, any Preliminary Prospectus and, subject to the proviso
of Section 5(c), the Prospectus and amendments and supplements thereto and the
mailing and delivering of copies thereof to the Underwriters and dealers; (ii)
the cost of printing or otherwise producing any Agreement among Underwriters,
this Agreement, any Pricing Agreement, any Indenture, any Delayed Delivery
Contracts, any Blue Sky and Legal Investment Memoranda and any other documents
in connection with the offering, purchase, sale and delivery of the Securities;
(iii) all expenses in connection with the qualification of the Securities and
the Guarantees for offering and sale under state securities laws as provided in
Section 5(b) hereof, including the reasonable fees and disbursements of counsel
for the Underwriters in connection with such qualification and in connection
with the Blue Sky and legal investment surveys; (iv) any fees charged by
securities rating services for rating the Securities; (v) any filing fees
incident to any required review by the National Association of Securities
Dealers, Inc. of the terms of the sale of the Securities; (vi) any cost of
preparing certificates or other evidences of the Securities or any costs of The
Depository Trust Company; (vii) the fees and expenses of any Trustee and any
agent of any Trustee and the fees and disbursements of counsel for any Trustee
in connection with any Indenture and the Securities; and (viii) all other costs
and expenses incident to the performance of the Company's and the Guarantor's
obligations hereunder and under any Delayed Delivery Contracts which are not
otherwise specifically provided for in this Section. It is understood, however,
that, except as provided in this Section, Section 8 and Section 11 hereof, the
Underwriters will pay all of their own costs and expenses, including the fees of
their counsel, transfer taxes on resale of any of the Securities by them, and
any advertising expenses connected with any offers they may make.

                  The foregoing provisions of this Section 6 shall be without
prejudice to the Company's or the Guarantor's rights under any separate
agreements between the Company or

                                       13
<PAGE>   14
the Guarantor and their respective attorneys, accountants and vendors with
respect to such fees, disbursements, expenses and costs.

                  7. The obligations of the Underwriters of any Designated
Securities under the Pricing Agreement relating to such Designated Securities
shall be subject, in the discretion of the Representatives, to the condition
that all representations and warranties and other statements of the Company and
the Guarantor in or incorporated by reference in the Pricing Agreement relating
to such Designated Securities are, at and as of the Time of Delivery for such
Designated Securities, true and correct, the condition that the Company and the
Guarantor shall have performed in all material respects all of its obligations
hereunder theretofore to be performed, and the following additional conditions:

                           (a) The Prospectus as amended or supplemented in
         relation to the applicable Designated Securities shall have been filed
         with the Commission pursuant to Rule 424(b) within the applicable time
         period prescribed for such filing by the rules and regulations under
         the Act and in accordance with Section 5(a) hereof; no stop order
         suspending the effectiveness of the Registration Statement or any part
         thereof shall have been issued and no proceeding for that purpose shall
         have been initiated or, to the knowledge of the Company or the
         Guarantor, threatened by the Commission;

                           (b) Sullivan & Cromwell, counsel for the
         Underwriters, shall have furnished to the Representatives such opinion
         or opinions, dated the Time of Delivery for such Designated Securities,
         with respect to the incorporation of the Company and the Guarantor, the
         validity of the Indenture, the Designated Securities, the Guarantees,
         the Delayed Delivery Contracts, if any, the Registration Statement, the
         Prospectus as amended or supplemented and other related matters as the
         Representatives may reasonably request, and such counsel shall have
         received such papers and information as they may reasonably request to
         enable them to pass upon such matters;

                           (c) Thomas J. Calvocoressi, counsel to the Company
         and the Guarantor, shall have furnished to the Representatives such
         counsel's written opinion, dated the Time of Delivery for such
         Designated Securities, in form and substance satisfactory to the
         Representatives, to the effect that:

                                       14
<PAGE>   15
                                    (i)     Each of the Company and the
                  Guarantor has been duly incorporated and is
                  validly existing as a corporation in good standing
                  under the laws of the State of Connecticut;

                                    (ii) Each of Aetna Life Insurance Company
                  and Aetna Life Insurance and Annuity Company has been duly
                  incorporated and is validly existing as an insurance
                  corporation in good standing under the laws of the State of
                  Connecticut; U.S. Healthcare, Inc. has been duly incorporated
                  and is validly existing and in good standing under the laws of
                  the State of Pennsylvania; all of the outstanding shares of
                  capital stock of the Company, Aetna Life Insurance and Annuity
                  Company and U.S. Healthcare, Inc. have been duly authorized
                  and validly issued and are fully paid and non-assessable, and
                  (except for directors' qualifying shares, if any) are owned
                  directly or indirectly by the Guarantor; and all of the
                  outstanding shares of capital stock of Aetna Life Insurance
                  Company (except for directors' qualifying shares, if any) are
                  owned directly or indirectly by the Company;

                                    (iii) To the best of such counsel's
                  knowledge and other than as set forth or contemplated in the
                  Prospectus, there are no legal or governmental proceedings
                  pending or threatened involving the Company or the Guarantor
                  or any of their respective subsidiaries of a character
                  required to be disclosed in the Registration Statement or
                  Prospectus which are not adequately disclosed in the
                  Registration Statement or Prospectus;

                                    (iv) This Agreement and the Pricing
                  Agreement with respect to the Designated Securities have been
                  duly authorized, executed and delivered by the Company and the
                  Guarantor;

                                    (v) The Designated Securities have been duly
                  authorized by the Company; assuming the due authentication of
                  the Underwriters' Securities by the Trustee, the Underwriters'
                  Securities have been duly issued, executed and delivered and
                  constitute valid and legally binding obligations of the
                  Company enforceable against the Company in accordance with
                  their terms, subject to (1) bankruptcy, insolvency,
                  reorganization, fraudulent transfer, moratorium and other
                  similar laws now or

                                       15
<PAGE>   16
                  hereafter in effect relating to or affecting creditors' rights
                  generally and the rights of creditors of insurance companies
                  generally and (2) general principles of equity (regardless of
                  whether considered in a proceeding at law or in equity); and
                  assuming the due authentication of the Contract Securities by
                  the Trustee, the Contract Securities, if any, when issued,
                  executed and delivered and when paid for in accordance with
                  the Delayed Delivery Contracts will constitute valid and
                  legally binding obligations of the Company enforceable against
                  the Company in accordance with their terms, subject to (1)
                  bankruptcy, insolvency, reorganization, fraudulent transfer,
                  moratorium and other similar laws now or hereafter in effect
                  relating to or affecting creditors' rights generally and the
                  rights of creditors of insurance companies generally and (2)
                  general principles of equity (regardless of whether considered
                  in a proceeding at law or in equity);

                                    (vi) The Guarantees have been duly
                  authorized by the Guarantor; upon execution and delivery of
                  the Underwriters Securities by the Company against payment
                  therefor and assuming the due authentication of the
                  Underwriters' Securities by the Trustee, the Guarantees
                  endorsed on the Underwriters' Securities have been duly
                  issued, executed and delivered and constitute valid and
                  legally binding obligations of the Guarantor enforceable
                  against the Guarantor in accordance, with their terms, subject
                  to (1) bankruptcy, insolvency, reorganization, fraudulent
                  transfer, moratorium and other similar laws now or hereafter
                  in effect relating to or affecting creditors' rights generally
                  and the rights of creditors of insurance companies generally
                  and (2) general principles of equity (regardless of whether
                  considered in a proceeding at law or in equity); and when the
                  Contract Securities, if any, are issued, executed,
                  authenticated and delivered in accordance with the Indenture
                  and paid for in accordance with the Delayed Delivery
                  Contracts, upon execution and delivery of the Guarantees
                  endorsed on such Contract Securities in accordance with the
                  Indenture, such Guarantees will constitute valid and legally
                  binding obligations of the Guarantor enforceable against the
                  Guarantor in accordance with their terms, subject to (1)
                  bankruptcy, insolvency, reorganization, fraudulent

                                       16
<PAGE>   17
                 transfer, moratorium and other similar laws now or hereafter
                  in effect relating to or affecting creditors' rights generally
                  and the rights of creditors of insurance companies generally
                  and (2) general principles of equity (regardless of whether
                  considered in a proceeding at law or in equity);

                                    (vii) The Indenture has been duly
                  authorized, executed and delivered by the Company and the
                  Guarantor and, assuming the due authorization, execution and
                  delivery thereof by the Trustee, the Indenture constitutes a
                  valid and legally binding instrument of the Company and the
                  Guarantor enforceable against the Company and the Guarantor in
                  accordance with its terms, subject to (1) bankruptcy,
                  insolvency, reorganization, fraudulent transfer, moratorium
                  and other similar laws now or hereafter in effect relating to
                  or affecting creditors' rights generally, and the rights of
                  creditors of insurance companies generally and (2) general
                  principles of equity (regardless of whether considered in a
                  proceeding at law or in equity);

                                    (viii) The issue and sale of the Designated
                  Securities, the issuance of the Guarantees and the performance
                  by the Company and the Guarantor of their respective
                  obligations under the Designated Securities, the Guarantees,
                  the Indenture, each of the Delayed Delivery Contracts, if any,
                  this Agreement and the Pricing Agreement with respect to the
                  Designated Securities will not (1) conflict with or result in
                  a breach or violation by the Company or the Guarantor of any
                  of the terms or provisions of, or constitute a default by the
                  Company or the Guarantor under, any indenture, mortgage, deed
                  of trust, loan agreement or other similar agreement or
                  instrument known to such counsel to which the Company or the
                  Guarantor is a party or by which the Company or the Guarantor
                  is bound or to which any of the property or assets of the
                  Company or the Guarantor is subject, except, in all such
                  cases, for such conflicts, breaches, violations or defaults as
                  would not have a material adverse effect on the financial
                  condition of the Guarantor and its subsidiaries taken as a
                  whole, or would not have a material adverse effect on the
                  issuance or sale of the Designated Securities or the issuance
                  of the Guarantees; and (2) result in any

                                       17
<PAGE>   18
                  violation of (A) the provisions of the Certificate of
                  Incorporation or By-Laws of the Company or the Guarantor or
                  (B) any statute of the United States or the State of
                  Connecticut or any order, rule or regulation known to such
                  counsel of any court or governmental agency or body of the
                  United States or the State of Connecticut having jurisdiction
                  over the Company or the Guarantor or any of their respective
                  properties, except with respect to clause (B) of this
                  Paragraph (viii) (2), such violations as would not have a
                  material adverse effect on the financial condition of the
                  Guarantor and its subsidiaries taken as a whole, or would not
                  have a material adverse effect on the issuance or sale of the
                  Designated Securities or the issuance of the Guarantees (and
                  except that for purposes of this paragraph (viii) such counsel
                  need not express any opinion as to any violation of any
                  fraudulent transfer laws or other antifraud laws or as to any
                  violation of any federal and state securities laws or blue sky
                  or insurance laws; provided further, that insofar as
                  performance by the Company and the Guarantor of their
                  respective obligations under the Indenture, the Delayed
                  Delivery Contracts, if any, the Underwriting Agreement, the
                  Pricing Agreement relating to the Designated Securities, and
                  the Designated Securities and the Guarantees is concerned,
                  such counsel need not express any opinion as to bankruptcy,
                  insolvency, reorganization, moratorium and other similar laws
                  now or hereafter in effect relating to or affecting creditors'
                  rights generally and the rights of creditors of insurance
                  companies generally);

                                    (ix) The documents incorporated by reference
                  in the Prospectus as amended or supplemented (other than the
                  financial statements and related notes, information as to
                  reserves, the financial statement schedules and the other
                  financial and statistical data included therein or omitted
                  therefrom, as to which such counsel need express no opinion),
                  when they became effective or were filed with the Commission,
                  as the case may be, complied as to form in all material
                  respects with the requirements of the Act or the Exchange Act,
                  as applicable, and the rules and regulations of the Commission
                  thereunder;

                                       18
<PAGE>   19
                                   (x) Under the laws of the State of
                  Connecticut and under the federal laws of the United States,
                  no consent, approval, authorization, order, registration,
                  filing or qualification of or with any court or governmental
                  agency or body is required for the issue and sale of the
                  Designated Securities and the issuance of the Guarantees in
                  accordance with the Indenture, each of the Delayed Delivery
                  Contracts, if any, this Agreement and the Pricing Agreement
                  with respect to the Designated Securities except for such
                  consents, approvals, authorizations, orders, registrations,
                  filings or qualifications as have been obtained under the Act
                  and the Trust Indenture Act and such as may be required under
                  state securities or Blue Sky laws or insurance securities laws
                  of any such jurisdiction in connection with the purchase and
                  sale and distribution of the Designated Securities by the
                  Underwriters, and except those which, if not obtained, will
                  not have a material adverse effect on the financial condition
                  of the Guarantor and its subsidiaries taken as a whole; and

                                    (xi) In the event any of the Designated
                  Securities are to be purchased pursuant to Delayed Delivery
                  Contracts, each of such Delayed Delivery Contracts has been
                  duly authorized, executed and delivered by the Company and the
                  Guarantor and, assuming such Delayed Delivery Contract has
                  been duly authorized, executed and delivered by the purchaser
                  named therein, and the Securities to be delivered thereunder
                  have been paid for by the purchaser named therein, such
                  Delayed Delivery Contract constitutes a valid and legally
                  binding agreement of the Company and the Guarantor enforceable
                  against the Company and the Guarantor in accordance with its
                  terms, subject to (1) bankruptcy, insolvency, reorganization,
                  fraudulent transfer, moratorium and other similar laws now or
                  hereafter in effect relating to or affecting creditors' rights
                  generally and the rights of creditors of insurance companies
                  generally and (2) general principles of equity (regardless of
                  whether considered in a proceeding at law or in equity); and
                  any Delayed Delivery Contracts conform in all material
                  respects to the description thereof in the Prospectus as
                  amended or supplemented.

                                       19
<PAGE>   20
                  In addition, such counsel shall state that such counsel does
not know of any contract or other document (i) of a character required to be
filed as an exhibit to the Registration Statement or to any of the documents
incorporated by reference into the Prospectus as amended or supplemented which
is not so filed, (ii) required to be incorporated by reference into the
Prospectus as amended or supplemented which is not so incorporated by reference
or (iii) required to be described in the Registration Statement or the
Prospectus as amended or supplemented which is not so described.

                  In rendering the opinion required by subsection (c) of this
Section, Mr. Calvocoressi may state that he is admitted to the Bar of the State
of Connecticut and that his opinion is limited to the laws of the State of
Connecticut and the federal laws of the United States of America. Mr.
Calvocoressi may rely (A) as to any matter to which you consent (which consent
shall not be unreasonably withheld), to the extent specified in such opinion,
upon the opinions of other counsel in good standing whom such counsel believes
to be reliable, provided that Mr. Calvocoressi shall state that he and you are
justified in relying on such opinions and (B) as to matters of fact, upon
certificates of officers and representatives of the Company and the Guarantor
and of public officials, and may state that he has not verified independently
the accuracy or completeness of information or documents furnished to such
counsel with respect to the Registration Statement or the Prospectus.

                           (d) Davis Polk & Wardwell, special counsel for the
         Company and the Guarantor, shall have furnished to the Representatives
         their written opinion, dated the Time of Delivery for such Designated
         Securities, in form and substance satisfactory to the Representatives,
         to the effect that:

                                    (i)     This Agreement and the Pricing
                  Agreement with respect to the Designated
                  Securities have been duly authorized, executed and
                  delivered by the Company and the Guarantor;

                                    (ii) The Designated Securities have been
                  duly authorized by the Company; assuming the due
                  authentication of the Underwriters' Securities by the Trustee,
                  the Underwriters' Securities are duly issued, executed and
                  delivered, and constitute valid and legally binding
                  obligations of the Company enforceable against the Company in
                  accordance with their terms, subject to (1) bankruptcy,
                  insolvency, reorganization, fraudulent

                                       20
<PAGE>   21
                  transfer, moratorium and other similar laws now or hereafter
                  in effect relating to or affecting creditors' rights generally
                  and the rights of creditors of insurance companies generally
                  and (2) general principles of equity (regardless of whether
                  considered in a proceeding at law or in equity); the Contract
                  Securities when issued, executed and delivered (and assuming
                  the due authentication thereof by the Trustee) and when paid
                  for in accordance with the Indenture and the Delayed Delivery
                  Contracts, will constitute valid and legally binding
                  obligations of the Company enforceable against the Company in
                  accordance with their terms, subject to (1) bankruptcy,
                  insolvency, reorganization, fraudulent transfer, moratorium
                  and other similar laws now or hereafter in effect relating to
                  or affecting creditors' rights generally and the rights of
                  creditors of insurance companies generally and (2) general
                  principles of equity (regardless of whether considered in a
                  proceeding at law or in equity); and the Designated Securities
                  and the Indenture conform in all material respects to the
                  descriptions thereof in the Prospectus as amended or
                  supplemented;

                                    (iii) The Guarantees have been duly
                  authorized by the Guarantor; upon execution and delivery of
                  the Underwriters' Securities by the Company against payment
                  therefor and assuming the due authentication of the
                  Underwriters' Securities by the Trustee, the Guarantees
                  endorsed on the Underwriters' Securities will be duly issued,
                  executed and delivered, and constitute valid and legally
                  binding obligations of the Guarantor enforceable against the
                  Guarantor in accordance with their terms, subject to (1)
                  bankruptcy, insolvency, reorganization, fraudulent transfer,
                  moratorium and other similar laws now or hereafter in effect
                  relating to or affecting creditors' rights generally and the
                  rights of creditors of insurance companies generally and (2)
                  general principles of equity (regardless of whether considered
                  in a proceeding at law or in equity); and when the Contract
                  Securities are issued, executed and delivered (and assuming
                  the due authentication thereof by the Trustee) and paid for in
                  accordance with the Indenture and the Delayed Delivery
                  Contracts, upon execution and delivery of the Guarantees
                  endorsed on such Contract Securities, such Guarantees will

                                       21
<PAGE>   22
                  constitute valid and legally binding obligations of the
                  Guarantor enforceable against the Guarantor in accordance with
                  their terms, subject to (1) bankruptcy, insolvency,
                  reorganization, fraudulent transfer, moratorium and other
                  similar laws now or hereafter in effect relating to or
                  affecting creditors' rights generally and the rights of
                  creditors of insurance companies generally and (2) general
                  principles of equity (regardless of whether considered in a
                  proceeding at law or in equity); and the Guarantees conform in
                  all material respects to the description thereof in the
                  Prospectus as amended or supplemented;

                                    (iv) The Indenture has been duly authorized,
                  executed and delivered by the Company and the Guarantor and,
                  assuming the due authorization, execution and delivery thereof
                  by the Trustee, the Indenture constitutes a valid and legally
                  binding instrument of the Company and the Guarantor
                  enforceable against the Company and the Guarantor in
                  accordance with its terms, subject to (1) bankruptcy,
                  insolvency, reorganization, fraudulent transfer, moratorium
                  and other similar laws now or hereafter in effect relating to
                  or affecting creditors' rights generally and the rights of
                  creditors of insurance companies generally and (2) general
                  principles of equity (regardless of whether considered in a
                  proceeding at law or in equity); and the Indenture has been
                  duly qualified under the Trust Indenture Act;

                                    (v) In the event any of the Designated
                  Securities are to be purchased pursuant to Delayed Delivery
                  Contracts, each of such Delayed Delivery Contracts has been
                  duly authorized, executed and delivered by the Company and the
                  Guarantor and, assuming such Delayed Delivery Contract has
                  been duly authorized, executed and delivered by the purchaser
                  named therein, and the Securities to be delivered thereunder
                  have been paid for by the purchaser named therein, such
                  Delayed Delivery Contract constitutes a valid and legally
                  binding agreement of the Company and the Guarantor enforceable
                  in accordance with its terms, subject to (1) bankruptcy,
                  insolvency, reorganization, fraudulent transfer, moratorium
                  and other similar laws now or hereafter in effect relating to
                  or affecting creditors' rights generally and the rights of
                  creditors of insurance companies generally and (2) general
                  principles of equity

                                       22
<PAGE>   23
                 (regardless of whether considered in a proceeding at law or in
                  equity); and any Delayed Delivery Contracts conform in all
                  material respects to the description thereof in the Prospectus
                  as amended and supplemented;

                                    (vi) The statements contained in the
                  Prospectus under the captions "Description of Debt Securities
                  and Debt Guarantees" and "Plan of Distribution" and the
                  corresponding sections in any prospectus supplement relating
                  to the description of the Designated Securities or their
                  distribution, insofar as such statements constitute summaries
                  of certain provisions of the documents referred to therein,
                  accurately summarize the material provisions of such documents
                  required to be stated therein; and

                                    (vii) (1) such counsel is of the opinion
                  that the Registration Statement, as amended, and the
                  Prospectus, as amended or supplemented, as of the Time of
                  Delivery (other than the financial statements and related
                  notes, information as to reserves, the financial statement
                  schedules and the other financial data included therein or
                  omitted therefrom, as to which such counsel need express no
                  opinion), comply as to form in all material respects with the
                  Act and the rules and regulations of the Commission
                  thereunder, (2) nothing has come to the attention of such
                  counsel that would cause such counsel to believe that the
                  Registration Statement or the Prospectus, as amended or
                  supplemented, as of the Time of Delivery (other than the
                  financial statements and related notes, information as to
                  reserves, the financial statement schedules and the other
                  financial data included therein or omitted therefrom, as to
                  which such counsel need express no belief), contains an untrue
                  statement of a material fact or omits to state a material fact
                  necessary to make the statements therein, in the light of the
                  circumstances under which they were made, not misleading.

                  With respect to clause (vii) of subsection (d) of this
Section, Davis Polk & Wardwell may state that their opinion and belief are based
upon their participation in the preparation of the Registration Statement and
Prospectus (other than the documents incorporated by reference therein) and any
amendments or supplements thereto and review and discussion of the contents
thereof (including the documents

                                       23
<PAGE>   24
incorporated by reference therein), but are without independent check or
verification except as specified. In rendering the opinion required by
subsection (d) of this Section, Davis Polk & Wardwell may rely upon the accuracy
of matters (A) involving the application of laws of any jurisdiction other than
the United States or New York and as to any other matter to which you consent
(which consent shall not be unreasonably withheld), to the extent specified in
such opinion, upon the opinions of other counsel reasonably satisfactory to you
(including without limitation, as to matters of Connecticut law, on the opinion
of Thomas J. Calvocoressi, counsel to the Company and the Guarantor), and (B) of
fact upon certificates of officers and representatives of the Company and the
Guarantor and of public officials.

                           (e) At the Time of Delivery for such Designated
         Securities, KPMG Peat Marwick LLP, independent public accountants for
         the Company and the Guarantor, and Ernst & Young LLP, independent
         public accountants for U.S. Healthcare, Inc., shall each have furnished
         to the Representatives a letter dated such Time of Delivery to the
         effect set forth in Annex III hereto and as to such other matters as
         the Representatives may reasonably request and in form and substance
         satisfactory to the Representatives, provided that the letters shall
         use a "cut-off date" not earlier than the date of the Pricing
         Agreement; and, provided further, that the foregoing letter of Ernst &
         Young LLP shall only be required if such Time of Delivery occurs prior
         to the filing of the Guarantor's Annual Report on Form 10-K for the
         year ending December 31, 1996 or if such Time of Delivery occurs on or
         after the date of such filing such letter shall be required only if
         agreed between the Company and the Representatives and specified in the
         applicable Pricing Agreement;

                           (f) Since the respective dates as of which
         information is given in the Prospectus as amended or supplemented as of
         the date of the Pricing Agreement there shall not have been any adverse
         change or a development involving a prospective material adverse change
         in the financial position, stockholders' equity or results of
         operations of the Guarantor and its subsidiaries considered as a whole,
         otherwise than as set forth or contemplated in the Prospectus as
         amended or supplemented as of the date of the Pricing Agreement, the
         effect of which, in any such case described above, is in the reasonable
         judgment of the Representatives, after consultation with the Company
         and Guarantor, so material and adverse as to make it

                                       24
<PAGE>   25
         impracticable to proceed with the public offering or the delivery of
         the Underwriters' Securities on the terms and in the manner
         contemplated in the Prospectus as amended or supplemented as of the
         date of the Pricing Agreement;

                           (g) On or after the date of the Pricing Agreement
         relating to the Designated Securities, no downgrading shall have
         occurred in the rating accorded the Company's or the Guarantor's debt
         securities by either the Standard & Poor's Corporation or Moody's
         Investors Service, Inc.;

                           (h) On or after the date of the Pricing Agreement
         relating to the Designated Securities, there shall not have occurred
         any of the following: (i) a suspension or material limitation in
         trading in securities generally on the New York Stock Exchange; (ii) a
         general moratorium on commercial banking activities in New York
         declared by either Federal or New York state authorities; or (iii) the
         outbreak or material escalation of hostilities involving the United
         States or the declaration by the United States of a national emergency
         or war, if the effect of any of the above specified events, in the
         reasonable judgment of the Representatives, after consultation with the
         Company and the Guarantor, makes it impracticable to proceed with the
         public offering or the delivery of the Underwriters' Securities on the
         terms and in the manner contemplated by the Prospectus as amended or
         supplemented; and

                           (i) The Company and the Guarantor shall each have
         furnished or caused to be furnished to the Representatives at the Time
         of Delivery for the Designated Securities a certificate or certificates
         of the Vice Chairman for Strategy and Finance or the Vice President,
         Corporate Finance or the Treasurer as to the accuracy of the
         representations and warranties of the Company and the Guarantor herein
         at and as of such Time of Delivery, as to the performance by the
         Company and the Guarantor of all of their respective obligations
         hereunder to be performed at or prior to such Time of Delivery, as to
         the matters set forth in subsections (a) and (f) of this Section and as
         to such other matters as the Representatives may reasonably request.

                  8. (a) The Company and the Guarantor, jointly and severally,
will indemnify and hold harmless each Underwriter against any losses, claims,
damages or liabilities, joint or several, to which such Underwriter may

                                       25


<PAGE>   26
become subject, under the Act or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based
upon an untrue statement or alleged untrue statement of a material fact
contained in any Preliminary Prospectus, any preliminary prospectus supplement,
the Registration Statement, the Prospectus as amended or supplemented and any
other prospectus relating to the Securities, or any amendment or supplement
thereto, or arise out of or are based upon the omission or alleged omission to
state therein a material fact required to be stated therein or necessary to make
the statements therein (i) in the case of the Registration Statement, not
misleading and (ii) in the case of any Prospectus, in light of the circumstances
in which they were made, not misleading, and will reimburse each Underwriter for
any legal or other expenses reasonably incurred by such Underwriter in
connection with investigating or defending any such action or claim as such
expenses are incurred; provided, however, that the Company and the Guarantor
shall not be liable in any such case to the extent that any such loss, claim,
damage or liability arises out of or is based upon an untrue statement or
alleged untrue statement or omission or alleged omission made in any Preliminary
Prospectus, any preliminary prospectus supplement, the Registration Statement,
the Prospectus as amended or supplemented and any other prospectus relating to
the Securities, or any such amendment or supplement, in reliance upon and in
conformity with written information furnished to the Company or the Guarantor by
any Underwriter of Designated Securities through the Representatives for
inclusion therein; and provided, further, that the Company and the Guarantor
shall not be liable to any Underwriter under the indemnity agreement in this
subsection (a) with respect to any Preliminary Prospectus or any preliminary
prospectus supplement to the extent that any such loss, claim, damage or
liability of such Underwriter results from the fact that such Underwriter sold
Securities to a person to whom there was not sent or given, at or prior to the
written confirmation of such sale, a copy of the Prospectus (excluding documents
incorporated by reference) or of the Prospectus as then amended or supplemented
(excluding documents incorporated by reference) in any case where such delivery
is required by the Act if the Company has previously furnished copies thereof to
such Underwriter (or to the Representatives) and the loss, claim, damage or
liability of such Underwriter results from an untrue or alleged untrue statement
or omission or alleged omission of a material fact contained in the Preliminary
Prospectus or any preliminary prospectus supplement which was corrected in the
Prospectus (or the Prospectus as amended or supplemented).


                                       26
<PAGE>   27
              (b) Each Underwriter will indemnify and hold harmless the Company
and the Guarantor against any losses, claims, damages or liabilities to which
the Company or the Guarantor may become subject, under the Act or otherwise,
insofar as such losses, claims, damages or liabilities (or actions in respect
thereof) arise out of or are based upon an untrue statement or alleged untrue
statement of a material fact contained in any Preliminary Prospectus, any
preliminary prospectus supplement, the Registration Statement, the Prospectus as
amended or supplemented and any other prospectus relating to the Securities, or
any amendment or supplement thereto, or arise out or are based upon the omission
or alleged omission to state therein a material fact required to be stated
therein or necessary to make the statements therein (i) in the case of the
Registration Statement, not misleading and (ii) in the case of any Prospectus,
in light of the circumstances under which they were made, not misleading, in
each case to the extent, but only to the extent, that such untrue statement or
alleged untrue statement or omission or alleged omission was made in any
Preliminary Prospectus, any preliminary prospectus supplement, the Registration
Statement, the Prospectus as amended or supplemented and any other prospectus
relating to the Securities, or any such amendment or supplement, in reliance
upon and in conformity with written information furnished to the Company or the
Guarantor by such Underwriter through the Representatives for inclusion therein;
and will reimburse the Company and the Guarantor for any legal or other expenses
reasonably incurred by the Company or the Guarantor in connection with
investigating or defending any such action or claim as such expenses are
incurred.

              (c) Promptly after receipt by an indemnified party under
subsection (a) or (b) above of notice of the commencement of any action, such
indemnified party shall, if a claim in respect thereof is to be made against the
indemnifying party under such subsection, notify the indemnifying party in
writing of the commencement thereof; but the omission so to notify the
indemnifying party shall not relieve it from any liability which it may have to
any indemnified party otherwise than under such subsection. In case any such
action shall be brought against any indemnified party and it shall notify the
indemnifying party of the commencement thereof, the indemnifying party shall be
entitled to participate therein and, to the extent that it shall wish, jointly
with any other indemnifying party similarly notified, to assume the defense
thereof, with counsel reasonably satisfactory to such indemnified party (who
shall not, except with the consent of the indemnified party, be counsel to the
indemnifying party), and, after


                                       27
<PAGE>   28
notice from the indemnifying party to such indemnified party of its election so
to assume the defense thereof, the indemnifying party shall not be liable to
such indemnified party under such subsection for any legal expenses of other
counsel or any other expenses, in each case subsequently incurred by such
indemnified party, in connection with the defense thereof other than reasonable
costs of investigation. In no event shall any indemnifying party be liable for
the fees and expenses of more than one counsel (in addition to local counsel)
separate from their own counsel for all indemnified parties in connection with
any one action or separate but similar or related actions in the same
jurisdiction arising out of the same general allegations or circumstances. In no
event shall an indemnifying party be liable with respect to any action or claim
settled without its written consent. No indemnifying party shall, without the
prior written consent of the indemnified party, effect any settlement of any
pending or threatened proceeding in respect of which any indemnified party is or
could have been a party and indemnity could have been sought hereunder by such
indemnified party, unless such settlement includes an unconditional release of
such indemnified party from all liability on claims that are the subject matter
of such proceeding.

              (d) If the indemnification provided for in this Section 8 is
unavailable to or insufficient to hold harmless an indemnified party under
subsection (a) or (b) above in respect of any losses, claims, damages or
liabilities (or actions in respect thereof) referred to therein, then each
indemnifying party, in lieu of indemnifying such indemnified party, shall
contribute to the amount paid or payable by such indemnified party as a result
of such losses, claims, damages or liabilities (or actions in respect thereof)
in such proportion as is appropriate to reflect the relative benefits received
by the Company and the Guarantor on the one hand and the Underwriters of the
Designated Securities on the other from the offering of the Designated
Securities to which such loss, claim, damage or liability (or action in respect
thereof) relates. If, however, the allocation provided by the immediately
preceding sentence is not permitted by applicable law or if the indemnified
party is not entitled to receive the indemnification provided for in subsection
(a) above because of the second proviso thereof or if the indemnified party
failed to give the notice required under subsection (c) above, then each
indemnifying party shall contribute to such amount paid or payable by such
indemnified party in such proportion as is appropriate to reflect not only such
relative benefits but also the relative fault of the Company and the Guarantor
on the one hand and the Underwriters of the Designated Securities on the other
in connection with the statements or omissions which resulted in such losses,
claims, damages or


                                       28
<PAGE>   29
liabilities (or actions in respect thereof), as well as any other relevant
equitable considerations. The relative benefits received by the Company and the
Guarantor on the one hand and such Underwriters on the other shall be deemed to
be in the same proportion as the total net proceeds from such offering (before
deducting expenses) received by the Company bear to the total underwriting
discounts and commissions received by such Underwriters. The relative fault
shall be determined by reference to, among other things, whether the untrue or
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information supplied by the Company and the
Guarantor on the one hand or such Underwriters on the other and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such statement or omission, including with respect to any Underwriter,
the extent to which such losses, claims, damages or liabilities (or actions in
respect thereof) with respect to any Preliminary Prospectus or any preliminary
prospectus supplement result from the fact that the Underwriter sold Securities
to a person to whom there was not sent or given, at or prior to the written
confirmation of such sale, a copy of the Prospectus (excluding documents
incorporated by reference) or of the Prospectus as then amended or supplemented
(excluding documents incorporated by reference), if the Company has previously
furnished copies thereof to such Underwriters. The Company, the Guarantor and
the Underwriters agree that it would not be just and equitable if contribution
pursuant to this subsection (d) were determined by pro rata allocation (even if
the Underwriters were treated as one entity for such purpose) or by any other
method of allocation which does not take account of the equitable considerations
referred to above in this subsection (d). The amount paid or payable by an
indemnified party as a result of the losses, claims, damages or liabilities (or
actions in respect thereof) referred to above in this subsection (d) shall be
deemed to include any legal or other expenses reasonably incurred by such
indemnified party in connection with investigating or defending any such action
or claim. Notwithstanding the provisions of this subsection (d), no Underwriter
shall be required to contribute any amount in excess of the amount by which the
total price at which the applicable Designated Securities underwritten by it and
distributed to the public were offered to the public exceeds the amount of any
damages (other than amounts paid or incurred without the consent of the
indemnifying party as provided in this Section 8) which such Underwriter has
otherwise been required to pay by reason of such untrue or alleged untrue
statement or omission or alleged omission. No person guilty of fraudulent
misrepresentation (within the meaning of Section


                                       29
<PAGE>   30
11(f) of the Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation. The obligations of the Underwriters
of Designated Securities in this subsection (d) to contribute are several in
proportion to their respective underwriting obligations with respect to such
Securities and not joint. No indemnifying party will be liable for contribution
with respect to any action or claim settled without its written consent.

              (e) The obligations of the Company and the Guarantor under this
Section 8 shall be in addition to any liability which the Company and the
Guarantor may otherwise have and shall extend or not extend, as the case may be,
upon the same terms and conditions, to each person, if any, who controls any
Underwriter within the meaning of the Act; and the obligations of the
Underwriters under this Section 8 shall be in addition to any liability which
the respective Underwriters may otherwise have and shall extend or not extend,
as the case may be, upon the same terms and conditions, to each officer and
director of the Company and the Guarantor and to each person, if any, who
controls the Company and the Guarantor within the meaning of the Act.

              9.  (a) If any Underwriter shall default in its obligation to
purchase the Underwriters' Securities which it has agreed to purchase under the
Pricing Agreement relating to such Underwriters' Securities, the Representatives
may in their discretion arrange for themselves or another party or other parties
to purchase such Underwriters' Securities on the terms contained herein. If
within thirty-six hours after such default by any Underwriter the
Representatives do not arrange for the purchase of such Underwriters'
Securities, then the Company shall be entitled to a further period of thirty-six
hours within which to procure another party or other parties reasonably
satisfactory to the Representatives to purchase such Underwriters' Securities on
such terms. In the event that, within the respective prescribed period, the
Representatives notify the Company and the Guarantor that they have so arranged
for the purchase of such Underwriters' Securities, or the Company notifies the
Representatives that it has so arranged for the purchase of such Underwriters'
Securities, the Representatives or the Company shall have the right to postpone
the Time of Delivery for such Underwriters' Securities for a period of not more
than seven days in order to effect whatever changes may thereby be made
necessary in the Registration Statement or the Prospectus as amended or
supplemented, or in any other documents or arrangements, and the Company and the
Guarantor agree to file promptly any amendments or supplements to the
Registration Statement or


                                       30
<PAGE>   31
the Prospectus which in the opinion of the Representatives may thereby be made
necessary. The term "Underwriter" as used in this Agreement shall include any
person substituted under this Section with like effect as if such person had
originally been a party to the Pricing Agreement with respect to such Designated
Securities.

              (b) If, after giving effect to any arrangements for the purchase
of the Underwriters' Securities of a defaulting Underwriter or Underwriters by
the Representatives and the Company as provided in subsection (a) above, the
aggregate amount of such Underwriters' Securities which remains unpurchased does
not exceed one-tenth of the aggregate principal amount of the Designated
Securities, then the Company shall have the right to require each non-defaulting
Underwriter to purchase the principal amount of Underwriters' Securities which
such Underwriter agreed to purchase under the Pricing Agreement relating to such
Designated Securities and, in addition, to require each non-defaulting
Underwriter to purchase its pro rata share (based on the principal amount of
Designated Securities which such Underwriter agreed to purchase under such
Pricing Agreement) of the Underwriters' Securities of such defaulting
Underwriter or Underwriters for which such arrangements have not been made; but
nothing herein shall relieve a defaulting Underwriter from liability for its
default.

              (c) If, after giving effect to any arrangements for the purchase
of the Designated Securities of a defaulting Underwriter or Underwriters by the
Representatives and the Company as provided in subsection (a) above, the
aggregate principal amount of Designated Securities which remains unpurchased
exceeds one-tenth of the aggregate principal amount of the Designated
Securities, as referred to in subsection (b) above, or if the Company shall not
exercise the right described in subsection (b) above to require non-defaulting
Underwriters to purchase Designated Securities of a defaulting Underwriter or
Underwriters, then the Pricing Agreement relating to such Designated Securities
shall thereupon terminate, without liability on the part of any non-defaulting
Underwriter or the Company or the Guarantor, except for the expenses to be borne
by the Company and the Underwriters as provided in Section 6 hereof and the
indemnity and contribution agreements in Section 8 hereof; but nothing herein
shall relieve a defaulting Underwriter from liability for its default.


                                       31
<PAGE>   32
              10. The respective indemnities, agreements, representations,
warranties and other statements of the Company, the Guarantor and the several
Underwriters, as set forth in this Agreement or made by or on behalf of them,
respectively, pursuant to this Agreement, shall remain in full force and effect,
regardless of any investigation (or any statement as to the results thereof)
made by or on behalf of any Underwriter or any controlling person of any
Underwriter, or the Company or the Guarantor, or any officer or director or
controlling person of the Company or the Guarantor, and shall survive delivery
of and payment for the Securities.

              11. If any Pricing Agreement shall be terminated pursuant to
Section 9 hereof, the Company and the Guarantor shall not then be under any
liability to any Underwriter with respect to the Designated Securities covered
by such Pricing Agreement except as provided in Section 6 and Section 8 hereof;
but, if for any other reason Underwriters' Securities are not delivered by or on
behalf of the Company as provided herein, the Company will reimburse the
Underwriters through the Representatives for all reasonable out-of-pocket
expenses approved in writing by the Representatives, including reasonable fees
and disbursements of counsel, reasonably incurred by the Underwriters in making
preparations for the purchase, sale and delivery of such Designated Securities,
but the Company and the Guarantor shall then be under no further liability to
any Underwriter with respect to such Designated Securities except as provided in
Section 6 and Section 8 hereof.

              12. In all dealings hereunder, the Representatives of the
Underwriters of Designated Securities shall act on behalf of each of such
Underwriters, and the parties hereto shall be entitled to act and rely upon any
statement, request, notice or agreement on behalf of any Underwriter made or
given by such Representatives jointly or by such of the Representatives, if any,
as may be designated for such purpose in the Pricing Agreement.

              All statements, requests, notices and agreements hereunder shall
be in writing, and if to the Underwriters shall be delivered or sent by mail,
telex or facsimile transmission to the address of the Representatives as set
forth in the Pricing Agreement; and if to the Company or the Guarantor shall be
delivered or sent by mail, telex or facsimile transmission to the address of the
Company and the Guarantor set forth in the Registration Statement; Attention:
Corporate Secretary; provided, however, that any notice to an Underwriter
pursuant to Section 8(c) hereof shall be delivered or sent by mail, telex or
facsimile


                                       32
<PAGE>   33
transmission to such Underwriter at its address set forth in its Underwriters'
Questionnaire, or telex constituting such Questionnaire, which address will be
supplied to the Company and the Guarantor by the Representatives upon request.
Any such statements, requests, notices or agreements shall take effect upon
receipt thereof.

              13. This Agreement and each Pricing Agreement shall be binding
upon, and inure solely to the benefit of, the Underwriters, the Company, the
Guarantor and, to the extent provided in Section 8 and Section 10 hereof, the
officers and directors of the Company, the Guarantor and each person who
controls the Company, the Guarantor or any Underwriter, and their respective
heirs, executors, administrators, successors and assigns, and no other person
shall acquire or have any right under or by virtue of this Agreement or any such
Pricing Agreement. No purchaser of any of the Securities from any Underwriter
shall be deemed a successor or assign by reason merely of such purchase.

              14. Time shall be of the essence for each Pricing Agreement. As
used herein, "business day" shall mean any day when the Commission's office in
Washington, D.C. is open for business.

              15. THIS AGREEMENT AND EACH PRICING AGREEMENT SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS, BUT WITHOUT REGARD TO PRINCIPLES OF
CONFLICTS OF LAWS OF THE STATE OF NEW YORK.

              16. This Agreement and each Pricing Agreement may be executed by
any one or more of the parties hereto and thereto in any number of counterparts,
each of which shall be deemed to be an original, but all such respective
counterparts shall together constitute one and the same instrument.


                                            Very truly yours,


                                            AETNA SERVICES, INC.




                                            By:____________________________
                                               Name:
                                               Title:



                                       33
<PAGE>   34
                                            AETNA INC.

                                            By:____________________________
                                               Name:
                                               Title:



                                       34
<PAGE>   35
                                     ANNEX I


                                PRICING AGREEMENT

[Insert Representatives]
  As Representatives of the several
   Underwriters named in Schedule 1 hereto


                                                              ___________, 199_.

Ladies and Gentlemen:

              Aetna Services, Inc. a Connecticut corporation (the "Company"),
proposes, subject to the terms and conditions stated herein and in the
Underwriting Agreement, dated ________, 199_ (the "Underwriting Agreement"), to
issue and sell to the Underwriters named in Schedule I hereto (the
"Underwriters") the Securities specified in Schedule II hereto (the "Designated
Securities"). The Securities specified in Schedule II hereto shall be guaranteed
by Aetna Inc., a Connecticut corporation (the "Guarantor"), as set forth in the
Indenture identified in Schedule II hereto. Each of the provisions of the
Underwriting Agreement is incorporated herein by reference in its entirety, and
shall be deemed to be a part of this Agreement to the same extent as if such
provisions had been set forth in full herein; and each of the representations
and warranties set forth therein shall be deemed to have been made at and as of
the date of this Pricing Agreement, except that each representation and warranty
that refers to the Prospectus in Section 2 of the Underwriting Agreement shall
be deemed to be a representation or warranty as of the date of the Underwriting
Agreement in relation to the Prospectus (as therein defined), and also a
representation and warranty as of the date of this Pricing Agreement in relation
to the Prospectus as amended or supplemented relating to the Designated
Securities which are the subject of this Pricing Agreement. Each reference to
the Representatives herein and in the provisions of the Underwriting Agreement
so incorporated by reference shall be deemed to refer to you. Unless otherwise
defined herein, terms defined in the Underwriting Agreement are used herein
<PAGE>   36
as therein defined. The Representatives designated to act on behalf of each of
the Underwriters of the Designated Securities pursuant to Section 12 of the
Underwriting Agreement and the address of the Representatives referred to in
such Section 12 are set forth at the end of Schedule II hereto.

              An amendment to the Registration Statement, or a supplement to the
Prospectus, as the case may be, relating to the Designated Securities, in the
form heretofore delivered to you is now proposed to be filed with the
Commission.

              Subject to the terms and conditions set forth herein and in the
Underwriting Agreement incorporated herein by reference, the Company agrees to
issue and to sell to each of the Underwriters, and each of the Underwriters
agrees, severally and not jointly, to purchase from the Company, at the time and
place and at the purchase price to the Underwriters set forth in Schedule II
hereto, the principal amount of Designated Securities set forth opposite the
name of such Underwriter in Schedule I hereto, less the principal amount of
Designated Securities covered by Delayed Delivery Contracts, if any, as may be
specified in Schedule II, and the Guarantor agrees to issue its Guarantees with
respect to such Designated Securities.


                                        2
<PAGE>   37
              If the foregoing is in accordance with your understanding, please
sign and return to us counterparts hereof, and upon acceptance hereof by you, on
behalf of each of the Underwriters, this letter and such acceptance hereof,
including the provisions of the Underwriting Agreement incorporated herein by
reference, shall constitute a binding agreement between each of the Underwriters
and the Company and the Guarantor. It is understood that your acceptance of this
letter on behalf of each of the Underwriters is or will be pursuant to the
authority set forth in a form of Agreement among Underwriters, the form of which
shall be submitted to the Company and the Guarantor for examination upon
request.


                                       AETNA SERVICES, INC.



                                       By:___________________________
                                          Name:
                                          Title:


                                       AETNA INC.




                                       By:___________________________
                                          Name:
                                          Title:

Accepted as of the date hereof:

[Insert Representatives]
 On behalf of each of the
 Underwriters


By:__________________________
   Name:
   Title:


                                        3
<PAGE>   38
                                   SCHEDULE I

<TABLE>
<CAPTION>
                                                                Principal
                                                                Amount of
                                                                Designated
                                                                Securities
                                                                to be
Underwriter                                                     Purchased
- -----------                                                     ----------
<S>                                                             <C>
                                                                $

Total.........................................................  $
                                                                ==========
</TABLE>
<PAGE>   39
                                   SCHEDULE II


TITLE OF DESIGNATED SECURITIES:

  [ %] Guaranteed [Floating Rate] [Zero Coupon] [Senior]
  [Subordinated]
  [Notes] [Debentures] due

AGGREGATE PRINCIPAL AMOUNT:

  [$] [Foreign Currency]

PRICE TO PUBLIC:

         % of the principal amount of the Designated Securities, plus accrued 
interest from        to
         [and accrued amortization, if any, from      to      ]

PURCHASE PRICE BY UNDERWRITERS:

         % of the principal amount of the Designated Securities, plus accrued
interest from         to
         [and accrued amortization, if any, from      to      ]

SPECIFIED FUNDS FOR PAYMENT OF PURCHASE PRICE:

         Immediately Available Funds

INDENTURE:

         Indenture dated       19 ,   among the Company, the Guarantor and      
AS TRUSTEE

MATURITY:

INTEREST RATE:

  [  %] [Zero Coupon] [See Floating Rate Provisions]

INTEREST PAYMENT DATES:

  [months and dates]

REDEMPTION PROVISIONS:

         [No provisions for redemption]

         [The Designated Securities may be redeemed, otherwise than through 
         the sinking fund, in whole or in part at
<PAGE>   40
         the option of the Company, in the amount of [$] or an integral 
         multiple thereof,

              [or on after _________, at the following redemption prices
(expressed in percentages of principal amount). If [redeemed on or before
________, % and if] redeemed during the 12-month period beginning ,


                  YEAR                                        REDEMPTION
                  ----                                           PRICE
                                                              ----------

         and thereafter at 100% of their principal amount, together in each
         case with accrued interest to the redemption date.]

         [on any interest payment date falling on or after _____, _____, at the
         election of the Company, at a redemption price equal to the principal
         amount thereof, plus accrued interest to the date of redemption.]

         [Other possible redemption provisions, such as mandatory redemption
         upon occurrence of certain events or redemption for changes in tax law]

         [Restriction on refunding]

SINKING FUND PROVISIONS:

         [No sinking fund provisions]

         [The Designated Securities are entitled to the benefit of a sinking
         fund to retire [$] principal amount of Designated Securities on in each
         of the years through at 100% of their principal amount plus accrued
         interest][, together with (cumulative] [noncumulative] redemptions at
         the option of the Company to retire an additional [$] principal amount
         of Designated Securities in the years
                  through         at 100% of their principal amount plus 
         accrued interest].

                  [If Securities may be put to the issuer by holders, insert

OPTIONAL REPAYMENT PROVISIONS:


                                        2
<PAGE>   41
              Securities are repayable on , 
[insert date and years], at the option of the holder, at their principal amount
with accrued interest.

              [If securities are Floating Rate debt securities, insert -

FLOATING RATE PROVISIONS:

              Initial annual interest rate will be     % through (and thereafter
will be adjusted (monthly] [on each        ,     and ][to an annual rate of % 
above the average rate for -year [month] [securities] [certificates of deposit]
issued by and [insert names of banks] [and the annual interest rate [thereafter]
[from     through     ] will be the interest yield equivalent of the weekly
average per annum market discount rate for     -month Treasury bills plus % of 
Interest Differential (the excess, if any, of (i) then current weekly average
per annum secondary market yield for      -month certificates of deposit over
(ii) then current interest yield equivalent of the weekly average per annum 
market discount rate for -month Treasury bills); [from and thereafter the rate
will be the then current interest yield equivalent plus % of Interest 
Differential].]



TIME OF DELIVERY:



CLOSING LOCATION:



DELAYED DELIVERY:

              [None] [Underwriters' commission shall be __% of the principal
amount of Designated Securities for which Delayed Delivery Contracts have been
entered into. Such commission shall be payable to the order of ____]

NAMES AND ADDRESSES OF REPRESENTATIVES:

         Designated Representatives:

         Address for Notices, etc.:
[OTHER TERMS]:


                                        3
<PAGE>   42
                                    ANNEX II

                            DELAYED DELIVERY CONTRACT

Aetna Services, Inc.
151 Farmington Avenue
Hartford, CT 06156

Attention ____________

Aetna Inc.
151 Farmington Avenue
Hartford, CT 06156

Attention ____________

                                            ____________, 199_

Dear Sirs:

              The undersigned hereby agrees to purchase from Aetna Services,
Inc. (hereinafter called the "Company"), and the Company agrees to sell to the
undersigned,


                                  $__________

principal amount of the Company's debt securities (hereinafter called the
"Designated Securities"), guaranteed by Aetna Inc. (hereinafter called the
"Guarantor"), offered by the Company's and the Guarantor's Prospectus dated
____________ 199_, as amended or supplemented, receipt of a copy of which is
hereby acknowledged, at a purchase price of __% of the principal amount thereof,
plus accrued interest from the date from which interest accrues as set forth
below, and on the further terms and conditions set forth below, and on the
further terms and conditions set forth in this contract.

              The undersigned will purchase the Designated Securities from the
Company on _________,199_ (the "Delivery Date") and interest on the Designated
Securities so purchased will accrue from __________, 199_.

              The undersigned will purchase the Designated Securities from the
Company on the delivery date or dates and in the principal amount or amounts set
forth below:
<PAGE>   43
<TABLE>
<CAPTION>
Delivery Date                  Principal                 Date from Which
- -------------                  Amount                    Interest Accrues
                               ---------                 ----------------
<S>                            <C>                       <C>

__________, 19__               $________                 __________, 19__

__________, 19__               $________                 __________, 19__
</TABLE>

EACH SUCH DATE ON WHICH DESIGNATED SECURITIES ARE TO BE PURCHASED HEREUNDER IS
HEREINAFTER REFERRED TO AS A "DELIVERY DATE."

              Payment for the Designated Securities which the undersigned has
agreed to purchase on each Delivery Date shall be made to the Company in Federal
or other funds immediately available in New York City, by wire transfer to a
bank account specified by the Company, on such Delivery Date upon delivery to
the undersigned of the Designated Securities, having the Guarantee of the
Guarantor endorsed thereon, then to be purchased by the undersigned in
definitive fully registered form and in such denominations and registered in
such names as the undersigned may designate by written, telex or facsimile
communication addressed to the Company not less than five full business days
prior to such Delivery Date.

              The obligation of the undersigned to take delivery of and make
payment for Designated Securities on each Delivery Date shall be subject to the
condition that the purchase of Designated Securities to be made by the
undersigned shall not on such Delivery Date be prohibited under the laws of the
jurisdiction to which the undersigned is subject. The obligation of the
undersigned to take delivery of and make payment for Designated Securities shall
not be affected by the failure of any purchaser to take delivery of and make
payment for Designated Securities pursuant to other contracts similar to this
contract.

              The undersigned understands that Underwriters (the "Underwriters")
are also purchasing Designated Securities from the Company, but that the
obligations of the undersigned hereunder are not contingent on such purchases.
Promptly after completion of the sale to the Underwriters the Company will mail
or deliver to the undersigned at its address set forth below notice to such
effect, accompanied by a copy of the opinion of counsel for the Company and the
Guarantor delivered to the Underwriters in connection therewith.



                                        2
<PAGE>   44
              The undersigned represents and warrants that, as of the date of
this contract, the undersigned is not prohibited from purchasing the Designated
Securities hereby agreed to be purchased by it under the laws of the
jurisdiction to which the undersigned is subject.

              This contract will inure to the benefit of and be binding upon the
parties hereto and their respective successors, but will not be assignable by
either party hereto without the written consent of the other.

              This contract may be executed by either of the parties hereto in
any number of counterparts, each of which shall be deemed to be an original, but
all such counterparts shall together constitute one and the same instrument.

              It is understood that the acceptance by the Company and the
Guarantor of any Delayed Delivery Contract (including this contract) is in the
Company's and the Guarantor's sole discretion and that, without limiting the
foregoing, acceptances of such contracts need not be on a first-come,
first-served basis. If this contract is acceptable to the Company and the
Guarantor, it is requested that the Company and the Guarantor sign the form of
acceptance below and mail or deliver one of the counterparts hereof to the
undersigned at its address set forth below. This will become a binding contract
among the Company, the Guarantor and the undersigned when such counterpart is so
mailed or delivered by the Company and the Guarantor.

                                            Yours very truly,


                                            ____________________________

                                            By__________________________
                                                 (Authorized Signature)

                                            Name:
                                            Title:

                                            ____________________________
                                                      (Address)

Accepted:___________, 199_

Aetna Services, Inc.

By________________________


                                        3
<PAGE>   45
  Name:
  Title:

Aetna Inc.


By________________________
  Name:
  Title:


                                        4
<PAGE>   46
                                    ANNEX III

              Pursuant to Section 7(f) of the Underwriting Agreement, KPMG Peat
Marwick LLP shall furnish letters to the Underwriters with respect to the
Company and the Guarantor and, if and to the extent required by said Section
7(f), Ernst & Young LLP shall furnish letters to the Underwriters with respect
to U.S. Healthcare, Inc., in each case to the effect that:

              (i)   They are independent certified public accountants with
         respect to the Company and the Guarantor, or U.S. Healthcare, Inc., as
         the case may be, and their respective subsidiaries within the meaning
         of the Act and the applicable published rules and regulations
         thereunder;

              (ii)  In their opinion, the financial statements and any
         supplementary financial information and schedules audited by them and
         included or incorporated by reference in the Registration Statement or
         the Prospectus comply as to form in all material respects with the
         applicable accounting requirements of the Act or the Exchange Act, as
         applicable, and the related published rules and regulations thereunder;
         and, if applicable, they have made a review in accordance with
         standards established by the American Institute of Certified Public
         Accountants of the consolidated interim financial statements and
         selected financial data derived from audited financial statements of
         the Company for the periods specified in such letter, as indicated in
         their reports thereon, copies of which have been furnished to the
         representatives of the Underwriters (the "Representatives");

              (iii) The unaudited selected financial information with
         respect to the consolidated results of operations and financial
         position of the Company or the Guarantor, or U.S. Healthcare, Inc., for
         the five most recent fiscal years included in the Prospectus and
         included or incorporated by reference in Item 6 of the Company's or the
         Guarantor's, or U.S. Healthcare's, as the case may be, Annual Report on
         Form 10-K for the most recent fiscal year agrees with the corresponding
         amounts (after restatement where applicable) in the audited
         consolidated financial statements for five such fiscal years which were
         included or incorporated by reference in the Company's or the
         Guarantor's, or U.S. Healthcare's, as the case may be, Annual Reports
         on Form 10-K for such fiscal years;
<PAGE>   47
              (iv)  on the basis of limited procedures, not constituting an
         audit in accordance with generally accepted auditing standards,
         consisting of a reading of the unaudited financial statements and other
         information referred to below, a reading of the latest available
         interim financial statements of the Company or the Guarantor, or U.S.
         Healthcare, Inc., and their respective subsidiaries, inspection of the
         minute books of the Company and the Guarantor, or U.S. Healthcare,
         Inc., and their respective subsidiaries since the date of the latest
         audited financial statements included or incorporated by reference in
         the Prospectus, inquiries of officials of the Company, the Guarantor or
         U.S. Healthcare, Inc., as the case may be, and their respective
         subsidiaries responsible for financial and accounting matters and such
         other inquiries and procedures as may be specified in such letter,
         nothing came to their attention that caused them to believe that:

                    (a)   the unaudited condensed consolidated statements
              of income, consolidated balance sheets and consolidated statements
              of cash flows included or incorporated by reference in the
              Company's, the Guarantor's or U.S. Healthcare's, as applicable
              Quarterly Reports on Form 10-Q incorporated by reference in the
              Prospectus do not comply as to form in all material respects with
              the applicable accounting requirements of the Exchange Act as it
              applies to Form 10-Q and the related published rules and
              regulations thereunder or, if no report has been issued by such
              accountants on the consolidated interim financial statements as
              set forth in (ii) above, based on a review under their applicable
              professional standards, that any material modifications should be
              made to such condensed consolidated financial statements for them
              to be in conformity with generally accepted accounting principles;

                    (b)   any other unaudited income statement data and
              balance sheet items included in the Prospectus do not agree with
              the corresponding items in the unaudited consolidated financial
              statements from which such data and items were derived, and any
              such unaudited data and items were not determined on a basis
              substantially consistent with the basis for the corresponding
              amounts in the audited consolidated financial statements included
              or incorporated by reference in the Company's or the Guarantor's,
              or U.S.


                                        2
<PAGE>   48
              Healthcare's, as applicable Annual Report on Form 10-K for the
              most recent fiscal year;

                    (c)   the unaudited financial statements which were
              not included in the Prospectus but from which were derived the
              unaudited condensed financial statements referred to in clause (a)
              above and any unaudited income statement data and balance sheet
              items included in the Prospectus and referred to in Clause (b)
              above were not determined on a basis substantially consistent with
              the basis for the audited financial statements included or
              incorporated by reference in the Company's or the Guarantor's, or
              U.S. Healthcare's, as applicable, Annual Report on Form 10-K for
              the most recent fiscal year;

                    (d)   in the case of KPMG Peat Marwick LLP only, as of
              a specified date not more than three business days prior to the
              date of such letter, there have been any changes in the
              consolidated Common Stock (other than issuances of common stock
              pursuant to employee benefit plans, upon exercise of options and
              stock appreciation rights, upon earn-outs of performance shares
              and upon conversions of convertible securities), which were
              outstanding on the date of the latest balance sheet included or
              incorporated by reference in the Prospectus) or any increase in
              the consolidated Long-Term Debt of the Company and the Guarantor
              and their respective subsidiaries, as compared with amounts shown
              in the latest balance sheet included or incorporated by reference
              in the Prospectus, except in each case for changes or increases
              which the Prospectus discloses have occurred or may occur or which
              are described in such letter; and

              (i)   for the period from the date of the latest financial
         statements included or incorporated by reference in the Prospectus to
         the last day of the month immediately preceding the date of such letter
         for which monthly financial statements are available, if any, there
         were any decreases in consolidated total revenues or income before
         income taxes, discontinued operations and cumulative effect of
         accounting changes or the per share amounts of consolidated income
         before income taxes, discontinued operations and cumulative effect of
         accounting changes, in each case as compared with the comparable period
         of the preceding year, except in each case for decreases which the
         Prospectus


                                        3
<PAGE>   49
         discloses have occurred or may occur or which are described in such
         letter; and

              (ii)  In addition to the audit referred to in their report(s)
         included or incorporated by reference in the Prospectus and the limited
         procedures, inspection of minute books, inquiries and other procedures
         referred to in paragraphs (iii) and (iv) above, they have carried out
         certain specified procedures, not constituting an audit in accordance
         with generally accepted auditing standards, with respect to certain
         amounts, percentages and financial information specified by the
         Representatives which are derived from the general accounting records
         of the Company or the Guarantor, or U.S. Healthcare, Inc., and their
         respective subsidiaries, which appear in the Prospectus (excluding
         documents incorporated by reference), or in Part 11 of, or in exhibits
         and schedules to, the Registration Statement specified by the
         Representatives or in documents incorporated by reference in the
         Prospectus specified by the Representatives, and have compared certain
         of such amounts, percentages and financial information with the
         accounting records of or schedules prepared by the Company or the
         Guarantor, or U.S. Healthcare, Inc., and their respective subsidiaries
         and have found them to be in agreement.

              (iii) In the case of KPMG Peat Marwick LLP only, if pro forma
         financial statements and other pro forma financial information (the
         "Pro Forma Disclosure") are required to be included in the Registration
         Statement, such letter shall further state that although they are
         unable to and do not express any opinion on such Pro Forma Disclosure
         or on the pro forma adjustments applied to the historical amounts
         included in that statement, for purposes of such letter they have:

                    (e)   read the Pro Forma Disclosure;

                    (f)   made inquiries of certain officials of the
              Company and the Guarantor who have responsibility for financial
              and accounting matters about the basis for their determination of
              the pro forma adjustments and whether the Pro Forma Disclosure
              above complies in form in all material respects with the
              applicable accounting requirements of Rule 11-02 of Regulation
              S-X; and

                    (g)   proved the arithmetic accuracy of the application of
              the pro forma adjustments to the


                                        4
<PAGE>   50
              historical amounts in the Pro Forma Disclosure; and

         on the basis of such procedures, and such other inquiries and
         procedures as may be specified in such letter, nothing came to their
         attention that caused them to believe that the Pro Forma Disclosure
         included in the Registration Statement does not comply in form in all
         material respects with the applicable requirements of Rule 11-02 of
         Regulation S-X and that the pro forma adjustments have not been
         properly applied to the historical amounts in the compilation of that
         statement.

              All references in this Annex III to the Prospectus shall be deemed
to refer to the Prospectus (including the documents incorporated by reference
therein) as defined in the Underwriting Agreement as of the date of the letter
delivered on the date of the Pricing Agreement for purposes of such letter and
to the Prospectus as amended or supplemented (including the documents
incorporated by reference therein) in relation to the applicable Designated
Securities for purposes of the letter delivered at the Time of Delivery for such
Designated Securities.


                                        5

<PAGE>   1
                                                                  Exhibit 4.1
                        AETNA LIFE AND CASUALTY COMPANY
                      (To Be Renamed Aetna Services, Inc.)

                                                                        ISSUER

                                   AETNA INC.,

                                                                       GUARANTOR

                                       AND

                           STATE STREET BANK AND TRUST
                  COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION,

                                                                        TRUSTEE

                                   ----------


                                    INDENTURE

                            Dated as of July 1, 1996

                                   ----------





                             Senior Debt Securities
<PAGE>   2
                                TABLE OF CONTENTS
                                                                           Page
                                                                           ----

PARTIES....................................................................   1
RECITALS...................................................................   1

                                   ARTICLE ONE

             DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

Section 101.      Definitions:.............................................   2
                  Act......................................................   2
                  Authenticating Agent.....................................   2
                  Board of Directors.......................................   3
                  Board Resolution.........................................   3
                  Business Day.............................................   3
                  Commission...............................................   3
                  Common Stock.............................................   3
                  Company..................................................   4
                  Company Request; Company Order...........................   4
                  Corporate Trust Office...................................   4
                  corporation..............................................   4
                  Covenant Defeasance......................................   4
                  Defaulted Interest.......................................   4
                  Defeasance...............................................   4
                  Depositary...............................................   4
                  Event of Default.........................................   4
                  Exchange Act.............................................   4
                  Floating or Adjustable Rate Provision....................   4
                  Floating or Adjustable Rate Security.....................   5
                  Foreign Government Obligations...........................   5
                  Global Security..........................................   5
                  Guarantee................................................   5
                  Guaranteed Obligations...................................   5
                  Guarantor................................................   5
                  Holder...................................................   5
                  Indenture................................................   5
                  interest.................................................   6
                  Interest Payment Date....................................   6
                  Maturity.................................................   6
                  Non-Recourse Debt........................................   6
                  Notice of Default........................................   6
                  Officers' Certificate....................................   6
                  Opinion of Counsel.......................................   6
                  Original Issue Discount Security.........................   6

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                                                                            Page
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                  Outstanding..............................................    7
                  Paying Agent.............................................    8
                  Person...................................................    8
                  Place of Payment.........................................    8
                  Predecessor Security.....................................    8
                  Principal Subsidiary.....................................    8
                  Redemption Date..........................................    9
                  Redemption Price.........................................    9
                  Regular Record Date......................................    9
                  Responsible Officer......................................    9
                  Securities...............................................    9
                  Security Register and Security
                   Registrar...............................................    9
                  Special Record Date......................................   10
                  Stated Maturity..........................................   10
                  Subsidiary...............................................   10
                  Trustee..................................................   10
                  Trust Indenture Act......................................   10
                  U.S. Government Obligations..............................   10
                  Vice President...........................................   10
Section 102.      Compliance Certificates and Opinions.....................   10
Section 103.      Form of Documents Delivered to Trustee...................   11
Section 104.      Acts of Holders; Record Dates............................   12
Section 105.      Notices, Etc., to Trustee, Company
                   and Guarantor...........................................   14
Section 106.      Notice to Holders; Waiver................................   15
Section 107.      Conflict with Trust Indenture Act........................   15
Section 108.      Effect of Headings and
                   Table of Contents.......................................   16
Section 109.      Successors and Assigns...................................   16
Section 110.      Separability Clause......................................   16
Section 111.      Benefits of Indenture....................................   16
Section 112.      Governing Law............................................   16
Section 113.      Legal Holidays...........................................   16
Section 114.      Personal Immunity from Liability for
                  Incorporators, Stockholders, Etc. .......................   17



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                                   ARTICLE TWO

                                 SECURITY FORMS

Section 201.      Forms Generally.........................................   17
Section 202.      Form of Face of Security................................   18
Section 203.      Form of Reverse of Security.............................   21
Section 204.      Form of Legend for Global Securities....................   26
Section 205.      Form of Trustee's Certificate of
                   Authentication.........................................   27
Section 206.      Form of Guarantee.......................................   27

                                  ARTICLE THREE

                                 THE SECURITIES

Section 301.      Amount Unlimited; Issuable in Series....................   30
Section 302.      Denominations...........................................   34
Section 303.      Execution, Authentication, Delivery
                   and Dating.............................................   34
Section 304.      Temporary Securities....................................   37
Section 305.      Registration, Registration of Transfer
                   and Exchange...........................................   38
Section 306.      Mutilated, Destroyed, Lost and Stolen

                   Securities.............................................   40
Section 307.      Payment of Interest; Interest Rights

                   Preserved..............................................   41
Section 308.      Persons Deemed Owners...................................   43
Section 309.      Cancellation............................................   43
Section 310.      Computation of Interest.................................   44


                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

Section 401.      Satisfaction and Discharge of Indenture..................  44
Section 402.      Application of Trust Fund................................  46



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                                  ARTICLE FIVE

                                    REMEDIES

Section 501.      Events of Default.......................................   47
Section 502.      Acceleration of Maturity; Rescission
                   and Annulment..........................................   50
Section 503.      Collection of Indebtedness and Suits

                   for Enforcement by Trustee.............................   52 
Section 504.      Trustee May File Proofs of Claim........................   54
Section 505.      Trustee May Enforce Claims Without
                   Possession of Securities...............................   55
Section 506.      Application of Money Collected..........................   55
Section 507.      Limitation on Suits.....................................   55
Section 508.      Unconditional Right of Holders to
                   Receive Principal, Premium and

                   Interest ..............................................   56
Section 509.      Restoration of Rights and Remedies......................   57
Section 510.      Rights and Remedies Cumulative..........................   57
Section 511.      Delay or Omission Not Waiver............................   57
Section 512.      Control by Holders......................................   58
Section 513.      Waiver of Past Defaults.................................   58
Section 514.      Undertaking for Costs...................................   59


                                   ARTICLE SIX

                                   THE TRUSTEE

Section 601.      Certain Duties and Responsibilities.....................   60
Section 602.      Notice of Defaults......................................   60
Section 603.      Certain Rights of Trustee...............................   60
Section 604.      Not Responsible for Recitals or
                   Issuance of Securities.................................   62
Section 605.      May Hold Securities.....................................   62
Section 606.      Money Held in Trust.....................................   62
Section 607.      Compensation and Reimbursement..........................   63
Section 608.      Disqualification; Conflicting
                   Interests..............................................   63
Section 609.      Corporate Trustee Required;

                   Eligibility............................................   64
Section 610.      Resignation and Removal; Appointment of

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                   Successor..............................................   64
Section 611.      Acceptance of Appointment by
                   Successor..............................................   66
Section 612.      Merger, Conversion, Consolidation or
                   Succession to Business.................................   68
Section 613.      Preferential Collection of Claims
                   Against Company or Guarantor...........................   68
Section 614.      Appointment of Authenticating Agent.....................   68


                                  ARTICLE SEVEN

                 HOLDERS' LISTS AND REPORTS BY TRUSTEE, COMPANY

                                  AND GUARANTOR

Section 701.      Company and Guarantor to Furnish Trustee
                   Names and Addresses of Holders.........................   70
Section 702.      Preservation of Information;
                   Communications to Holders..............................   71
Section 703.      Reports by Trustee......................................   71
Section 704.      Reports by Company and Guarantor........................   72


                                  ARTICLE EIGHT

                    CONSOLIDATION, MERGER, OR SALE OF ASSETS

Section 801.      Company or Guarantor May Consolidate,
                   Etc., Only on Certain Terms............................   72
Section 802.      Successor Substituted...................................   73
Section 803.      Assumption by Guarantor or Subsidiary of
                  Company's Obligations...................................   74


                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

Section 901.      Supplemental Indentures Without Consent
                   of Holders.............................................   75

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Section 902.      Supplemental Indentures with Consent of
                   Holders................................................   77
Section 903.      Execution of Supplemental Indentures....................   79
Section 904.      Effect of Supplemental Indentures.......................   79
Section 905.      Conformity with Trust Indenture Act.....................   80
Section 906.      Reference in Securities to Supplemental
                   Indentures.............................................   80
Section 907.      Waiver of Compliance by Holders.........................   80


                                   ARTICLE TEN

                                    COVENANTS

Section 1001.     Payment of Principal, Premium and
                   Interest...............................................   80
Section 1002.     Maintenance of Office or Agency
                   by Company and Guarantor...............................   81
Section 1003.     Money for Securities Payments to Be
                   Held in Trust..........................................   82
Section 1004.     Statement by Officers as to Default ....................   83
Section 1005.     Limitations on Liens on Common Stock of
                  Principal Subsidiaries..................................   84


                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES

Section 1101.     Applicability of Article................................   84
Section 1102.     Election to Redeem; Notice to Trustee...................   84
Section 1103.     Selection by Trustee of Securities to
                   Be Redeemed............................................   85
Section 1104.     Notice of Redemption....................................   85
Section 1105.     Deposit of Redemption Price.............................   86
Section 1106.     Securities Payable on Redemption Date...................   86
Section 1107.     Securities Redeemed in Part.............................   87



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                                 ARTICLE TWELVE

                       DEFEASANCE AND COVENANT DEFEASANCE

Section 1201.     Company's Option to Effect
                   Defeasance or Covenant Defeasance......................   87
Section 1202.     Defeasance and Discharge................................   87
Section 1203.     Covenant Defeasance.....................................   88
Section 1204.     Conditions to Defeasance or
                   Covenant Defeasance....................................   89
Section 1205.     Deposited Money and U.S. Government
                   Obligations or Foreign Government
                   Obligations to be Held In Trust;
                   Other Miscellaneous Provisions.........................   92
Section 1206.     Reinstatement...........................................   93

                                ARTICLE THIRTEEN

                                  SINKING FUNDS

Section 1301.     Applicability of Article................................   93
Section 1302.     Satisfaction of Sinking Fund Payments
                   with Securities........................................   94
Section 1303.     Redemption of Securities for Sinking
                   Fund...................................................   94

                                ARTICLE FOURTEEN

                             GUARANTEE OF SECURITIES

Section 1401.     Guarantee...............................................   95
Section 1402.     Subrogation.............................................   96
Section 1043.     Reinstatement...........................................   96
Section 1404.     Execution and Delivery of Guarantees....................   96


TESTIMONIUM...............................................................   97
SIGNATURES AND SEALS......................................................   97
ACKNOWLEDGMENTS...........................................................   98


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                                      -vii-


<PAGE>   9
                  INDENTURE, dated as of July 1, 1996, among AETNA LIFE AND
CASUALTY COMPANY (to be renamed Aetna Services, Inc.), a corporation duly
organized and validly existing under the laws of the State of Connecticut
(herein called the "Company"), having its principal office at 151 Farmington
Avenue, Hartford, Connecticut 06156, AETNA INC., a corporation duly organized
and existing under the laws of the State of Connecticut (herein called the
"Guarantor"), having its principal office at 151 Farmington Avenue, Hartford,
Connecticut 06156 and STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT,
NATIONAL ASSOCIATION, a national association duly organized and existing under
the laws of the United States of America, as Trustee (herein called the
"Trustee").

                                    RECITALS

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

                  The Guarantor has duly authorized the unconditional guarantee
of the Securities on the terms hereinafter set forth and the execution and
delivery of the Indenture.

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

                  NOW, THEREFORE, THIS INDENTURE WITNESSETH:

                  For and in consideration of the premises and the purchase of
the Securities by the Holders thereof, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, as
follows:

<PAGE>   10
                                   ARTICLE ONE

                        Definitions and Other Provisions
                             of General Application

Section 101.  Definitions.

                  For all purposes of this Indenture, except as otherwise
expressly provided or unless the context otherwise requires:

                  (1) the terms defined in this Article have the meanings
         assigned to them in this Article and include the plural as well as the
         singular;

                  (2) all other terms used herein which are defined in the Trust
         Indenture Act or the Securities Act of 1933, as amended, either
         directly or by reference therein, have the meanings assigned to them
         therein;

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

                  (4) the words "Article" and "Section" refer to an Article and
         Section, respectively, of this Indenture; and

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

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

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

                                      -2-
<PAGE>   11
                  "Board of Directors", when used with reference to either the
Company or the Guarantor, means either (i) the Board of Directors of the Company
or the Guarantor, as the case may be, the Executive Committee of such Board of
Directors or any other duly authorized committee of directors and/or officers
appointed by such Board of Directors or Executive Committee, or (ii) one or more
duly authorized officers of the Company or the Guarantor, as the case may be, to
whom the Board of Directors of the Company or the Guarantor or a committee
thereof has delegated the authority to act with respect to the matters
contemplated by this Indenture.

                  "Board Resolution", when used with reference to either the
Company or the Guarantor, means (i) a copy of a resolution certified by the
Corporate Secretary or an Assistant Corporate Secretary of the Company or the
Guarantor, as the case may be, to have been duly adopted by the Board of
Directors or a committee thereof and to be in full force and effect on the date
of such certification or (ii) a certificate signed by the authorized officer or
officers of the Company or the Guarantor, as the case may be, to whom the Board
of Directors of the Company or the Guarantor or a committee thereof has
delegated its authority (as described in the definition of Board of Directors),
and in each case, delivered to the Trustee.

                  "Business Day", when used with respect to any Place of
Payment, means each Monday, Tuesday, Wednesday, Thursday and Friday which is not
a day on which banking institutions in that Place of Payment are authorized or
obligated by law or executive order to close.

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

                  "Common Stock" means with respect to any Principal Subsidiary,
stock of any class, however designated, except stock which is non-participating
beyond fixed dividend and liquidation preferences and the holders of which have
either no voting rights or limited voting rights entitling them, only in the
case of certain contingencies, to elect less than a majority of the directors
(or persons performing similar functions) of such Principal Subsidiary, and
shall include securities of any class, however designated, which are convertible
into such Common Stock.

                                      -3-
<PAGE>   12
                  "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

                  "Company Request" or "Company Order", when used with reference
to the Company or the Guarantor, means a written request or order signed in the
name of the Company or of the Guarantor, as the case may be, by (i) any two of
the following individuals: the Chairman, the President, a Vice Chairman or a
Vice President, or (ii) by one of the foregoing individuals and by any other
Vice President, the Treasurer, an Assistant Treasurer, the Corporate Secretary
or an Assistant Corporate Secretary or any other individual authorized by the
Board of Directors for such purpose, and delivered to the Trustee.

                  "Corporate Trust Office" means the principal office of the
Trustee located at 750 Main Street, Suite 1114, Hartford, Connecticut 06103 at
which at any particular time its corporate trust business shall be administered.

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

                  "Covenant Defeasance" has the meaning specified in Section
1203.

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

                  "Defeasance" has the meaning specified in Section 1202.

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

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

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

                  "Floating or Adjustable Rate Provision" means a formula or
provision, specified in or pursuant to a Board


                                      -4-
<PAGE>   13
Resolution or an indenture supplemental hereto, providing for the determination,
whether pursuant to objective factors or pursuant to the sole discretion of any
Person (including the Company), and periodic adjustment of the interest rate
borne by a Floating or Adjustable Rate Security.

                  "Floating or Adjustable Rate Security" means any Security
which provides for interest thereon at a periodic rate that may vary from time
to time over the term thereof in accordance with a Floating or Adjustable Rate
Provision.

                  "Foreign Government Obligations" has the meaning specified in
Section 1204.

                  "Global Security" means a Security that evidences all or part
of the Securities of any series and is authenticated and delivered to, and
registered in the name of, the Depositary for such Securities or a nominee
thereof.

                  "Guarantee" means any guarantee of the Guarantor endorsed on a
Security authenticated and delivered pursuant to this Indenture and shall
include the guarantee set forth in Section 1401.

                  "Guaranteed Obligations" shall have the meaning set forth in
Section 1401.

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

                  "Holder" means a Person in whose name a Security is registered
in the Security Register.

                  "Indenture" means this instrument as originally executed or as
it may from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof,
including, for all purposes of this instrument and any such supplemental
indenture, the provisions of the Trust Indenture Act that are deemed to be a
part of and govern this instrument and any such supplemental indenture,
respectively. The term "Indenture" shall also include the terms of particular
series of Securities established as contemplated by Section 301.



                                      -5-
<PAGE>   14
                  "interest", when used with respect to an Original Issue
Discount Security which by its terms bears interest only after Maturity, means
interest payable after Maturity.

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

                  "Maturity", when used with respect to any Security, means the
date on which the principal of such Security or an installment of principal
becomes due and payable as therein or herein provided, whether at the Stated
Maturity or by declaration of acceleration, call for redemption or otherwise.

                  "Non-Recourse Debt" means any indebtedness for money borrowed
as to which the liability of the Guarantor, the Company or the Principal
Subsidiaries is limited solely to specific assets.

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

                  "Officers' Certificate", when used with respect to the Company
or the Guarantor, means a certificate signed by (i) any two of the following
individuals: the Chairman, the President, a Vice Chairman or a Vice President,
or (ii) by one of the foregoing individuals and by any other Vice President, the
Treasurer, an Assistant Treasurer, the Corporate Secretary or an Assistant
Corporate Secretary, of the Company or the Guarantor, as the case may be, or any
other individual authorized by the Board of Directors of the Company or the
Guarantor, as the case may be, for such purpose, and delivered to the Trustee.
One of the officers signing an Officers' Certificate given pursuant to Section
1004 shall be the principal executive, financial or accounting officer of the
Company or the Guarantor, as the case may be.

                  "Opinion of Counsel" means a written opinion of counsel, who
may be an employee of or counsel to the Company or the Guarantor, as the case
may be, or who may be other counsel reasonably satisfactory to the Trustee. Each
such opinion shall include the statements required by Section 314(e) of the
Trust Indenture Act, if applicable.

                  "Original Issue Discount Security" means any Security which
provides for an amount less than the principal amount thereof to be due and
payable upon a


                                      -6-
<PAGE>   15
declaration of acceleration of the Maturity thereof pursuant
to Section 502.

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

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

                  (ii) Securities for whose payment or redemption money in the
         necessary amount has been theretofore deposited with the Trustee or any
         Paying Agent (other than the Company or the Guarantor) in trust or set
         aside and segregated in trust by the Company or the Guarantor (if the
         Company or the Guarantor shall act as Paying Agent) for the Holders of
         such Securities; provided that, if such Securities are to be redeemed,
         notice of such redemption has been duly given pursuant to this
         Indenture or provision therefor satisfactory to the Trustee has been
         made;

                  (iii) Securities as to which Defeasance has been effected
         pursuant to Section 1202; and

                  (iv) Securities which have been paid pursuant to Section 306
         or in exchange for or in lieu of which other Securities have been
         authenticated and delivered pursuant to this Indenture, other than any
         such Securities in respect of which there shall have been presented to
         the Trustee proof satisfactory to it that such Securities are held by a
         bona fide purchaser in whose hands such Securities are valid
         obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (A) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding shall be the amount of the principal thereof that would be due and
payable as of the date of such determination upon acceleration of the Maturity
thereof pursuant to Section 502, (B) the principal amount of


                                      -7-
<PAGE>   16
a Security denominated in one or more foreign currencies or currency units shall
be the U.S. dollar equivalent, determined in the manner provided as contemplated
by Section 301 on the date of original issuance of such Security, of the
principal amount (or, in the case of an Original Issue Discount Security, the
U.S. dollar equivalent on the date of original issuance of such Security of the
amount determined as provided in (A) above) of such Security, and (C) Securities
owned by the Company, the Guarantor or any other obligor upon the Securities or
any Subsidiary of the Company or the Guarantor or of such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in relying upon any such request, demand,
authorization, direction, notice, consent or waiver, only Securities which the
Trustee knows to be so owned shall be so disregarded. Securities so owned which
have been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company, the
Guarantor or any other obligor upon the Securities or any Subsidiary of the
Company, the Guarantor or of such other obligor.

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

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

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

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

                  "Principal Subsidiary" means only Aetna Life Insurance
Company, Aetna Life Insurance and Annuity Company


                                      -8-
<PAGE>   17
and U.S. Healthcare, Inc., and any other Subsidiary of the Guarantor which shall
hereafter succeed by merger or otherwise to a major part of the business of one
or more of the Principal Subsidiaries. The decision as to whether a Subsidiary
shall have succeeded to a major part of the business of one or more of the
Principal Subsidiaries shall be made in good faith by the Board of Directors of
the Guarantor or a committee thereof by the adoption of a resolution so stating,
and the Guarantor shall within 30 days of the date of the adoption of such
resolution deliver to the Trustee a copy thereof, certified by the Corporate
Secretary or an Assistant Corporate Secretary of the Guarantor.

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

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

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

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

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

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


                                      -9-
<PAGE>   18
                  "Special Record Date" for the payment of any Defaulted
Interest means a date fixed by the Trustee pursuant to Section 307.

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

                  "Subsidiary" of any Person means a corporation more than 50%
of the voting power of which is controlled, directly or indirectly, by such
Person or by one or more other Subsidiaries of such Person, or by such Person
and one or more other Subsidiaries of such Person. For the purposes of this
definition, "voting power" means the power to vote for the election of
directors, whether at all times or only so long as no senior class of stock has
such voting power by reason of any contingency.

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

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

                  "U.S. Government Obligations" has the meaning specified in
Section 1204.

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

Section 102.  Compliance Certificates and Opinions.

                  Upon any application or request by the Company or the
Guarantor to the Trustee to take any action under any


                                      -10-
<PAGE>   19
provision of this Indenture, the Company or the Guarantor, as the case may be,
shall furnish to the Trustee such certificates and opinions as may be required
under the Trust Indenture Act. Each such certificate or opinion shall be given
in the form of an Officers' Certificate, if to be given by an officer of the
Company or the Guarantor, or an Opinion of Counsel, if to be given by counsel,
and shall comply with the requirements of the Trust Indenture Act and any other
requirements set forth in this Indenture.

                  Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (excluding certificates
provided for in Section 1004) shall include

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

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

                                    (3) a statement that, in the opinion of each
                  such individual, such individual has made such examination or
                  investigation as is necessary to enable such individual to
                  express an informed opinion as to whether or not such covenant
                  or condition has been complied with; and

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

Section 103.  Form of Documents Delivered to Trustee.

                  In any case where several matters are required to be certified
by, or covered by an opinion of, any specified Person, it is not necessary that
all such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.


                                      -11-
<PAGE>   20
                  Any certificate or opinion of an officer of the Company or the
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the certificate
or opinion or representations with respect to the matters upon which its
certificate or opinion is based are erroneous. Any such certificate or opinion
of counsel may be based, insofar as it relates to factual matters, upon a
certificate or opinion of, or representations by, an officer or officers of the
Company or the Guarantor, as the case may be, stating that the information with
respect to such factual matters is in the possession of the Company or the
Guarantor, as the case may be, unless such counsel knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to such matters are erroneous.

                  Any certificate, statement or opinion of an officer of the
Company or the Guarantor or of counsel may be based, insofar as it relates to
accounting matters, upon a certificate, opinion or representation by an
accountant or firm of accountants in the employ of the Company or the Guarantor,
as the case may be, unless such officer or counsel, as the case may be, knows,
or in the exercise of reasonable care should know, that the certificate, opinion
or representation with respect to such accounting matters upon which its
certificate, statement or opinion may be based is erroneous.

                  Where any Person is required to make, give or execute two or
more applications, requests, consents, certificates, statements, opinions or
other instruments under this Indenture, they may, but need not, be consolidated
and form one instrument.

Section 104.  Acts of Holders; Record Dates.

                  (a) Any request, demand, authorization, direction, notice,
consent, waiver or other action provided or permitted by this Indenture to be
given or taken by Holders may be embodied in and evidenced by one or more
instruments of substantially similar tenor signed by such Holders in person or
by agent duly appointed in writing; and, except as herein otherwise expressly
provided, such action shall become effective when such instrument or instruments
are delivered to the Trustee and, where it is hereby expressly required, to the
Company and the Guarantor. Such instrument or instruments (and the action
embodied therein and evidenced thereby) are herein sometimes referred


                                      -12-
<PAGE>   21

to as the "Act" of the Holders signing such instrument or instruments. Proof of
execution of any such instrument or of a writing appointing any such agent shall
be sufficient for any purpose of this Indenture and (subject to Section 601)
conclusive in favor of the Trustee, the Company and the Guarantor, if made in
the manner provided in this Section.

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

                  (c) The Company or the Guarantor may, in the circumstances
permitted by the Trust Indenture Act, fix any day as the record date for the
purpose of determining the Holders of Outstanding Securities of any series
entitled to give or take any request, demand, authorization, direction, notice,
consent, waiver or other action, or to vote on any action, authorized or
permitted to be given or taken by Holders of Outstanding Securities of such
series. If not set by the Company or the Guarantor prior to the first
solicitation of a Holder of Securities of such series made by any Person in
respect of any such action, or, in the case of any such vote, prior to such
vote, the record date for any such action or vote shall be the 30th day (or, if
later, the date of the most recent list of Holders required to be provided
pursuant to Section 701) prior to such first solicitation or vote, as the case
may be. With regard to any record date for action to be taken by the Holders of
one or more series of Securities, only the Holders of Securities of such series
on such date (or their duly designated proxies) shall be entitled to give or
take, or vote on, the relevant action.

                  (d) The ownership of Securities shall be proved by the
Security Register or by a certificate of the Security Registrar.


                                      -13-
<PAGE>   22
                  (e) Any request, demand, authorization, direction, notice,
consent, waiver or other Act of the Holder of any Security shall bind every
future Holder of the same Security and the Holder of every Security issued upon
the registration of transfer thereof or in exchange therefor or in lieu thereof
in respect of anything done, omitted or suffered to be done by the Trustee, the
Company or the Guarantor in reliance thereon, whether or not notation of such
action is made upon such Security.

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

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

                  Any request, demand, authorization, direction, notice,
consent, waiver or Act of Holders or other document provided or permitted by
this Indenture to be made upon, given or furnished to, or filed with,

                  (1) the Trustee by any Holder or by the Company or by the
         Guarantor shall be sufficient for every purpose hereunder if made,
         given, furnished or filed in writing to or with the Trustee at its
         Corporate Trust Office, Attention: Corporate Trust Department, or

                  (2) the Company or the Guarantor by the Trustee or by any
         Holder shall be sufficient for every purpose hereunder (unless
         otherwise herein expressly provided) if in writing and mailed, in the
         case of the Company, first-class postage prepaid, to the Company
         addressed to it at the address of its principal office specified in the
         first paragraph of this instrument, Attention: Treasurer, or at any
         other address previously furnished in writing to the Trustee by the
         Company, with a copy to the Guarantor, and, in the case of the
         Guarantor, first-class postage prepaid and addressed to it at the
         address of its principal office specified in the first paragraph of
         this instrument,


                                      -14-
<PAGE>   23
         Attention: Treasurer, or at any other address previously furnished in
         writing to the Trustee by the Guarantor, with a copy to the Company.

Section 106.  Notice to Holders; Waiver.

                  Where this Indenture provides for notice to Holders of any
event, such notice shall be sufficiently given (unless otherwise herein
expressly provided) if in writing and mailed, first-class postage prepaid, to
each Holder affected by such event, at its address as it appears in the Security
Register, not later than the latest date (if any), and not earlier than the
earliest date (if any), prescribed for the giving of such notice; provided,
however, that the Company, the Guarantor or the Trustee, upon a good faith
determination that mailing is in the circumstances impractical, may give such
notice by any other method which, in the reasonable belief of the Company or the
Guarantor or, in the case of the Trustee, of the Company, the Guarantor and the
Trustee, is likely to be received by the Holders. In any case where notice to
Holders is given by mail, neither the failure to mail such notice, nor any
defect in any notice so mailed, to any particular Holder shall affect the
sufficiency of such notice with respect to other Holders. Where this Indenture
provides for notice in any manner, such notice may be waived in writing by the
Person entitled to receive such notice, either before or after the event, and
such waiver shall be the equivalent of such notice. Waivers of notice by Holders
shall be filed with the Trustee, but such filing shall not be a condition
precedent to the validity of any action taken in reliance upon such waiver.

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

Section 107.  Conflict with Trust Indenture Act.

                  If any provision hereof limits, qualifies or conflicts with a
provision of the Trust Indenture Act that is required under such Act to be a
part of and govern this Indenture, the latter provision shall control. If any
provision of this Indenture modifies or excludes any provision of the Trust
Indenture Act that may be so modified or excluded, the latter provision shall be
deemed to apply


                                      -15-
<PAGE>   24
to this Indenture as so modified or to be excluded, as the case may be.

Section 108.  Effect of Headings and Table of Contents.

                  The Article and Section headings herein and the Table of
Contents are for convenience only and shall not affect the construction hereof.

Section 109.  Successors and Assigns.

                  All covenants and agreements in this Indenture by the Company
or the Guarantor shall bind their successors and assigns, whether so expressed
or not.

Section 110.  Separability Clause.

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

Section 111.  Benefits of Indenture.

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

Section 112.  Governing Law.

                  This Indenture and the Securities and the Guarantees shall be
governed by and construed in accordance with the laws of the State of New York,
but without regard to principles of conflicts of laws.

Section 113.  Legal Holidays.

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


                                      -16-
<PAGE>   25
same force and effect as if made on the Interest Payment Date or Redemption
Date, or at the Stated Maturity, provided that no interest shall accrue with
respect to such payment for the period from and after such Interest Payment
Date, Redemption Date or Stated Maturity, as the case may be, except that, if
such Business Day is in the next succeeding calendar year, such payment shall be
made on the immediately preceding Business Day, in each case with the same force
and effect as if made on such Interest Payment Date or Redemption Date, or at
the Stated Maturity, as the case may be.

Section 114.      Personal Immunity from Liability for Incorporators,
                  Stockholders, Etc.

                  No recourse shall be had for the payment of the principal of
or premium, if any, or interest, if any, on any Security, or for any claim based
thereon, or otherwise in respect of any Security or of the Guarantees, or based
on or in respect of this Indenture or any indenture supplemental hereto, against
any incorporator, or against any past, present or future stockholder, director
or officer, as such, of the Company or of any successor corporation, or of the
Guarantor or of any successor corporation, whether by virtue of any
constitution, statute or rule of law, or by the enforcement of any assessment or
penalty or otherwise, all such liability being expressly waived and released as
a condition of, and as consideration for, the execution of this Indenture and
the issue of the Securities and the Guarantees.

                                   ARTICLE TWO

                                 Security Forms

Section 201.  Forms Generally.

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


                                      -17-
<PAGE>   26
execution of the Securities. If the form of Securities of any series is
established by action taken pursuant to a Board Resolution of the Company, a
copy of an appropriate record of such action shall be certified by the Corporate
Secretary or an Assistant Corporate Secretary of the Company and delivered to
the Trustee at or prior to the delivery of the Company Order contemplated by
Section 303 for the authentication and delivery of such Securities.

                  The Guarantees by the Guarantor to be endorsed on the
Securities of each series shall be substantially in such form set forth in
Section 206, or in such other form as shall be established by or pursuant to a
Board Resolution of the Guarantor, or in one or more indentures supplemental
hereto, in each case with such appropriate insertions, omissions, substitutions
and other variations as are required or permitted by this Indenture and may have
such letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or as may, consistent herewith, be determined by the
officers executing such Guarantees, all as evidenced by such execution. If the
form of Guarantees to be endorsed on the Securities of any series is established
by action taken pursuant to a Board Resolution of the Guarantor, a copy of an
appropriate record of such action shall be certified by the Corporate Secretary
or an Assistant Corporate Secretary of the Guarantor and delivered to the
Trustee at or prior to the delivery of the Company Order contemplated by Section
303 for the authentication and delivery of such Securities.

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

Section 202.  Form of Face of Security.

                   [Insert any legend required by the Internal
                 Revenue Code and the regulations thereunder.]

                        [AETNA LIFE AND CASUALTY COMPANY]

                             [AETNA SERVICES, INC.]

            [...%] GUARANTEED [ZERO COUPON] [NOTE] [DEBENTURE] DUE...

No. .........                                                         $ ........


                                      -18-
<PAGE>   27
                  [AETNA LIFE AND CASUALTY COMPANY] [AETNA SERVICES, INC.], a
Connecticut corporation (herein called the "Company", which term includes any
successor Person under the Indenture hereinafter referred to), for value
received, hereby promises to pay to
 .............................................., or registered assigns, the
principal sum of ................ ................... [Dollars] [if other than
Dollars, substitute other currency or currency units] [if the Security is to
bear interest prior to Maturity, insert -- , and to pay interest thereon from
 ............. or from the most recent Interest Payment Date to which interest
has been paid or duly provided for, [semi-annually on ............ and
 ............ in each year] [If other than semi-annual payments, insert frequency
of payments and payment dates], commencing ........., at [If the Security is to
bear interest at a fixed rate, insert -- the rate of ....% per annum [If the
Security is a Floating or Adjustable Rate Security, insert -- a rate per annum
[computed-determined] in accordance with the [insert defined name of Floating or
Adjustable Rate Provision] set forth below] [If the security is to bear interest
at a rate determined with reference to an index, refer to description of index
below] until the principal hereof is paid or made available for payment [if
applicable, insert -- , and (to the extent that the payment of such interest
shall be legally enforceable) at the rate of ....% per annum on any overdue
principal and premium and on any overdue instalment of interest]. The interest
so payable, and punctually paid or duly provided for, on any Interest Payment
Date will, as provided in such Indenture, be paid to the Person in whose name
this Security (or one or more Predecessor Securities) is registered at the close
of business on the Regular Record Date for such interest, which shall be the
 ....... or ....... (whether or not a Business Day), as the case may be, next
preceding such Interest Payment Date. Any such interest not so punctually paid
or duly provided for will forthwith cease to be payable to the Holder on such
Regular Record Date and may either be paid to the Person in whose name this
Security (or one or more Predecessor Securities) is registered at the close of
business on a Special Record Date for the payment of such Defaulted Interest to
be fixed by the Trustee, notice whereof shall be given to Holders of Securities
of this series not less than 10 days prior to such Special Record Date, or be
paid at any time in any other lawful manner not inconsistent with the
requirements of any securities exchange on which the Securities of this series
may be listed, and upon such notice as may be required by such exchange, all as
more fully provided in said Indenture].


                                      -19-
<PAGE>   28
                  [If the Securities are Floating or Adjustable Rate Securities
with respect to which the principal of or any premium or interest may be
determined with reference to an index, insert the text of the Floating or
Adjustable Rate Provision.]

                  [If the Security is not to bear interest prior to Maturity,
insert -- The principal of this Security shall not bear interest except in the
case of a default in payment of principal upon acceleration, upon redemption or
at Stated Maturity and in such case the overdue principal of this Security shall
bear interest at the rate of ....% per annum (to the extent that the payment of
such interest shall be legally enforceable), which shall accrue from the date of
such default in payment to the date payment of such principal has been made or
duly provided for. Interest on any overdue principal shall be payable on demand.
Any such interest on any overdue principal that is not so paid on demand shall
bear interest at the rate of ......% per annum (to the extent that the payment
of such interest shall be legally enforceable), which shall accrue from the date
of such demand for payment to the date payment of such interest has been made or
duly provided for, and such interest shall also be payable on demand.]

                  Payment of the principal of (and premium, if any) and [if
applicable, insert -- any such] interest on this Security will be made at the
office or agency of the Company maintained for that purpose in ............, in
such coin or currency [of the United States of America] [if the Security is
denominated in a currency other than U.S. dollars, specify other currency or
currency unit in which payment of the principal of and any premium or interest
may be made] as at the time of payment is legal tender for payment of public and
private debts [if applicable, insert -- ; provided, however, that at the option
of the Company payment of interest may be made by check mailed to the address of
the Person entitled thereto as such address shall appear in the Security
Register].

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

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

                                      -20-
<PAGE>   29
         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

Dated:

                                         [AETNA LIFE AND CASUALTY COMPANY]
                                         [AETNA SERVICES, INC.]

                                         By
                                             ---------------------------
[Seal]

Attest:

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



Section 203.  Form of Reverse of Security.

         This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued and to be issued in one or more
series under an Indenture, dated as of July 1, 1996 (herein called the
"Indenture"), among the Company, as Issuer, Aetna Inc., as Guarantor (herein
called the "Guarantor") and ..................., as Trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), to
which Indenture and all indentures supplemental thereto reference is hereby made
for a statement of the respective rights, limitations of rights, duties and
immunities thereunder of the Company, the Guarantor, the Trustee and the Holders
of the Securities and of the terms upon which the Securities are, and are to be,
authenticated and delivered. This Security is one of the series designated on
the face hereof[, limited in aggregate principal amount to [$]...........].

         [If applicable, insert -- The Securities of this series are subject to
redemption upon not less than 30 days' nor more than 60 days' notice by mail,
[if applicable, insert -- (1) on ........... in any year commencing with the
year ...... and ending with the year ...... through operation of the sinking
fund for this series at a Redemption Price equal to 100% of the principal
amount, and (2)] at any time [on or after ................], as a whole or in
part, at the election of the Company, at the following Redemption Prices
(expressed as percentages of the principal amount): If redeemed [on or before
 ..............., ...%,



                                      -21-


<PAGE>   30



and if redeemed] during the 12-month period beginning ............. of the years
indicated,

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

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

         [If applicable, insert -- The Securities of this series are subject to
redemption upon not less than 30 days' nor more than 60 days' notice by mail,
(1) on ............ in any year commencing with the year .... and ending with
the year .... through operation of the sinking fund for this series at the
Redemption Prices for redemption through operation of the sinking fund
(expressed as percentages of the principal amount) set forth in the table below,
and (2) at any time [on or after ............], as a whole or in part, at the
election of the Company, at the Redemption Prices for redemption otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below: If redeemed during the 12-month period
beginning ............ of the years indicated,



                                      -22-


<PAGE>   31
                    Redemption Price
                     For Redemption                  Redemption Price For
                    Through Operation                Redemption Otherwise
                         of the                     Than Through Operation
Year                  Sinking Fund                    of the Sinking Fund
- ----                  ------------                    -------------------



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

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

         [If the Security is subject to redemption, insert -- In the event of
redemption of this Security in part only, a new Security or Securities of this
series and of like tenor for the unredeemed portion hereof will be issued in the
name of the Holder hereof upon the cancellation hereof.]

         The Indenture contains provisions for defeasance at any time of (1) the
entire indebtedness of this Security



                                      -23-


<PAGE>   32



or (2) certain restrictive covenants and Events of Default with respect to this
Security, in each case upon compliance with certain conditions set forth in the
Indenture.

         [If the Security is not an Original Issue Discount Security, insert --
If an Event of Default with respect to Securities of this series shall occur and
be continuing, the principal of the Securities of this series may be declared
due and payable in the manner and with the effect provided in the Indenture.]

         [If the Security is an Original Issue Discount Security, insert -- If
an Event of Default with respect to Securities of this series shall occur and be
continuing, an amount of principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture. Such amount shall be equal to -- insert formula for determining the
amount. Upon payment (i) of the amount of principal so declared due and payable
and (ii) of interest on any overdue principal and overdue interest (in each case
to the extent that the payment of such interest shall be legally enforceable),
all of the Company's obligations in respect of the payment of the principal of
and interest, if any, on the Securities of this series shall terminate.]

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

         No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter



                                      -24-


<PAGE>   33



or impair the obligation of the Company, which is absolute and unconditional, to
pay the principal of and any premium and interest on this Security at the times,
place and [rate-rates], and in the coin or currency, herein prescribed.

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

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

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

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

         The Indenture provides that the Company and the Guarantor, at the
Company's option, (a) will be discharged from any and all obligations in respect
of the Securities (except for certain obligations to register the transfer or
exchange of Securities, replace stolen, lost or mutilated Securities, maintain
paying agencies and hold moneys for



                                      -25-


<PAGE>   34



payment in trust) or (b) need not comply with certain restrictive covenants of
the Indenture, in each case if the Company or the Guarantor deposits, in trust,
with the Trustee money or U.S. Government Obligations (or Foreign Government
Obligations if the Securities are denominated in a foreign currency or
currencies) which through the payment of interest thereon and principal thereof
in accordance with their terms will provide money, in an amount sufficient to
pay all the principal (including any mandatory sinking fund payments) of, and
(premium, if any) and interest on, the Securities on the dates such payments are
due in accordance with the terms of such Securities and Guarantees, and certain
other conditions are satisfied.

         No recourse shall be had for the payment of the principal of (and
premium, if any) or interest on this Security, or for any claim based hereon, or
otherwise in respect hereof or of the Guarantee endorsed hereon, or based on or
in respect of the Indenture or any indenture supplemental thereto, against any
incorporator, stockholder, officer or director, as such, past, present or
future, of the Company or of any successor corporation, or of the Guarantor or
of any successor corporation, whether by virtue of any constitution, statute or
rule of law, or by the enforcement of any assessment or penalty or otherwise,
all such liability being, by the acceptance hereof and as part of the
consideration for the issue hereof, expressly waived and released.

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

Section 204. Form of Legend for Global Securities.

         Every Global Security authenticated and delivered hereunder shall bear
a legend in substantially the following form or such other legends as may be
required:

     This Security is a Global Security within the meaning of the Indenture
     hereinafter referred to and is registered in the name of a Depositary or a
     nominee thereof. This Security may not be transferred to, or registered or
     exchanged for Securities registered in the name of, any Person other than
     the Depositary or a nominee thereof and no such transfer may be registered,
     except in the limited circumstances described in the Indenture. Every
     Security authenticated and delivered upon registration of transfer of, or
     in exchange for or



                                      -26-


<PAGE>   35



     in lieu of, this Security shall be a Global Security subject to the
     foregoing, except in such limited circumstances.

Section 205. Form of Trustee's Certificate of Authentication.

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

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

                                                  .............................,
                                                                      As Trustee

                                                  By...........................
                                                              Authorized Officer

Section 206. Form of Guarantee.

         Guarantees to be endorsed on the Securities shall, subject to Section
201, be in substantially the form set forth below; words enclosed in brackets
shall be inserted, if applicable:

                                    GUARANTEE
                                       OF
                                   AETNA INC.

         Aetna Inc., a Connecticut corporation (herein called the "Guarantor",
which term includes any successor corporation under the Indenture referred to in
the Security upon which this Guarantee is endorsed), for value received, hereby
unconditionally guarantees to the Holder of the Security upon which this
Guarantee is endorsed the due and punctual payment of the principal of, premium,
if any, and interest on said Security [and the due and punctual payment of the
sinking fund payments provided for herein], when and as the same shall become
due and payable, whether at the Stated Maturity or upon declaration of
acceleration, call for redemption or otherwise, according to the terms thereof
and of the Indenture referred to therein. In case of the failure of [Aetna Life
and Casualty Company] [Aetna Services, Inc.], a Connecticut corporation (herein
called the "Company", which term includes any successor corporation under such
Indenture) punctually to make any such payment of



                                      -27-


<PAGE>   36



principal, premium or interest [or sinking fund payment], the Guarantor hereby
agrees to pay or to cause any such payment to be made punctually when and as the
same shall become due and payable, whether at Stated Maturity or upon
declaration of acceleration, call for redemption or otherwise, and as if such
payment were made by the Company. The Guarantor hereby agrees that its
obligations hereunder shall be as if it were principal debtor and not merely
surety, and shall be absolute and unconditional, irrespective of, and shall be
unaffected by, the validity, legality or enforceability of said Security or the
Indenture, or the absence of any action to enforce the same, or any waiver,
modification, indulgence or consent granted to the Company with respect thereto,
by the Holder of said Security or by the Trustee, the recovery of any judgment
against the Company or any action to enforce the same or any other circumstance
that might otherwise constitute a legal or equitable discharge or defense of a
surety or guarantor; provided, however, that notwithstanding the foregoing, no
such waiver, modification or indulgence shall, without the consent of the
Guarantor, increase the principal amount of said Security or the interest rate
thereon or increase any premium payable upon redemption thereof. The Guarantor
hereby waives diligence, presentment, demand of payment, filing of claims with a
court in the event of bankruptcy of the Company, any right of set-off or to
counterclaim, any right to require a proceeding first against the Company,
protest or notice with respect to said Security or the indebtedness evidenced
thereby [or with respect to any sinking fund payment required under said
Security] and all demands whatsoever, and covenants that this Guarantee will not
be discharged except by payment in full of the principal of, and premium, if
any, and interest on said Security.

         The Guarantor shall be subrogated to all rights of the Holder against
the Company in respect of any amounts paid to such Holder by the Guarantor
pursuant to the provisions of this Guarantee; provided, however, that the
Guarantor shall not, without the consent of all Holders of all outstanding
Securities of this series issued under the Indenture, be entitled to enforce, or
to receive, any payments arising out of or based upon such right of subrogation
until the principal of, premium, if any, and interest then due and payable on
all Securities of the same series issued under the Indenture shall have been
irrevocably paid in full in accordance with the terms of such Securities.

         This Guarantee is a guarantee of payment when due and not of
collection. This Guarantee shall continue to be



                                      -28-


<PAGE>   37



effective, or be reinstated, as the case may be, in respect of said Security if
at any time payment, or any part thereof, of said Security is rescinded or must
otherwise be restored or returned by the Holder of said Security or any trustee
for said Holder upon the insolvency, bankruptcy, dissolution, liquidation or
reorganization of the Company or any other entity, or upon or as a result of the
appointment of a receiver, intervenor or conservator of, or trustee or similar
officer for, the Company or any other entity or any substantial part of their
respective property, or otherwise, all as though such payments had not been
made.

         No reference herein to such Indenture and no provision of this
Guarantee or of such Indenture shall alter or impair the guarantee of the
Guarantor, which is absolute and unconditional, of the due and punctual payment
of the principal of, and premium, if any, and interest on the Security upon
which this Guarantee is endorsed at the times, place and rate, and in the cash
or currency prescribed herein.

         This Guarantee shall be governed by and construed in accordance with
the laws of the State of New York, but without regard to principles of conflicts
of laws.

         This Guarantee shall not be valid or become obligatory for any purpose
until the certificate of authentication on said Security shall have been
manually signed by or on behalf of the Trustee under such Indenture.

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



                                      -29-


<PAGE>   38



         IN WITNESS WHEREOF, Aetna Inc. has caused the execution hereof in its
corporate name by its duly authorized officers.

                                                     AETNA INC.

                                                     By
                                                       ------------------------
[Seal]

Attest:

- -------------------------------
[Assistant] Corporate Secretary

                                  ARTICLE THREE

                                 The Securities

Section 301. Amount Unlimited; Issuable in Series.

         The aggregate principal amount of Securities which may be authenticated
and delivered under this Indenture is unlimited.

         The Securities may be issued in one or more series. There shall be
established in or pursuant to Board Resolutions of the Company and the
Guarantor, as appropriate, and set forth in Officers' Certificates of the
Company and the Guarantor, as appropriate, or established in one or more
indentures supplemental hereto, prior to the issuance of Securities of any
series,

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

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



                                      -30-


<PAGE>   39



         which, pursuant to Section 303, are deemed never to have been
         authenticated and delivered hereunder);

                  (3) the Person to whom any interest on a Security of the
         series shall be payable, if other than the Person in whose name that
         Security (or one or more Predecessor Securities) is registered at the
         close of business on the Regular Record Date for such interest;

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

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

                  (6) whether the Securities of the series would be secured
         pursuant to Section 901(6);

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

                  (8) if applicable, the period or periods within which, the
         price or prices at which (including premium, if any) and the terms and
         conditions upon which Securities of the series may or are required to
         be redeemed or prepaid, in whole or in part, at the option of the
         Company or the Guarantor pursuant to a sinking fund or otherwise;

                  (9) the obligation, if any, of the Company to redeem or
         purchase Securities of the series pursuant to any sinking fund or
         analogous provisions or at the option of a Holder thereof and the
         period or periods within which, the price or prices at which



                                      -31-


<PAGE>   40



         and the terms and conditions upon which Securities of the series shall
         be redeemed or purchased, in whole or in part, pursuant to such
         obligation;

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

                  (11) if other than such coin or currency of the United States
         of America as at the time is legal tender for payment of public or
         private debts, the currency or currencies, including composite
         currencies, or currency units in which payment of the principal of and
         any premium and interest on any Securities of the series shall be
         payable and the manner of determining the equivalent thereof in the
         currency of the United States of America for purposes of the definition
         of "Outstanding" in Section 101;

                  (12) if the amount of payments of principal of or any premium
         or interest on any Securities of the series may be determined with
         reference to one or more indices, the manner in which such amounts
         shall be determined;

                  (13) if the principal of or any premium or interest on any
         Securities of the series is to be payable, at the election of the
         Company or a Holder thereof, in one or more currencies, including
         composite currencies, or currency units other than that or those in
         which the Securities are stated to be payable, the currency,
         currencies, including composite currencies, or currency units in which
         payment of the principal of and any premium and interest on Securities
         of such series as to which such election is made shall be payable, and
         the periods within which and the terms and conditions upon which such
         election is to be made;

                  (14) if other than the principal amount thereof, the portion
         of the principal amount of Securities of the series which shall be
         payable upon declaration of acceleration of



                                      -32-


<PAGE>   41



         the Maturity thereof pursuant to Section 502 or provable under any
         applicable federal or state bankruptcy or similar law pursuant to
         Section 503;

                  (15) if applicable, that the Securities of the series shall be
         issuable in whole or in part in the form of one or more Global
         Securities and, in such case, the Depositary or Depositaries for such
         Global Security or Global Securities and any circumstance other than
         those set forth in Section 305 in which any such Global Security may be
         transferred to, and registered and exchanged for Securities registered
         in the name of, a Person other than the Depositary for such Global
         Security or a nominee thereof and in which any such transfer may be
         registered;

                  (16) any other event or events of default applicable with
         respect to the Securities of the series in addition to those provided
         in Section 501(1) through (7);

                  (17) any other covenant or warranty included for the benefit
         of Securities of the series in addition to (and not inconsistent with)
         those included in this Indenture for the benefit of Securities of all
         series, or any other covenant or warranty included for the benefit of
         Securities of the series in lieu of any covenant or warranty included
         in this Indenture for the benefit of Securities of all series, or any
         provision that any covenant or warranty included in this Indenture for
         the benefit of Securities of all series shall not be for the benefit of
         Securities of the series, or any combination of such covenants,
         warranties or provisions;

                  (18) if other than as set forth in Section 206, the Guarantee
         of the Securities of such series pursuant to Article Fourteen hereof;

                  (19) any restriction or condition on the transferability of
         the Securities of the series;



                                      -33-


<PAGE>   42



                  (20) any authenticating or paying agents, registrars or any
         other agents with respect to the Securities of the series; and

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

                  All Securities of any one series shall be substantially
identical except as to denomination and number and except as may otherwise be
provided in or pursuant to the Board Resolutions referred to above and set forth
in such Officers' Certificate or in any such indenture supplemental hereto.

                  If any of the terms of the series are established by action
taken pursuant to a Board Resolution of the Company or the Guarantor, a copy of
such action shall be delivered to the Trustee.

Section 302. Denominations.

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

Section 303. Execution, Authentication, Delivery and Dating.

                  The Securities shall be executed on behalf of the Company by
its Chairman, its President, a Vice Chairman, any Vice President, its Treasurer
or Assistant Treasurer, under its corporate seal reproduced thereon attested by
its Corporate Secretary or one of its Assistant Corporate Secretaries. The
signature of any of these officers on the Securities may be manual or facsimile.

                  The Guarantees shall be executed on behalf of the Guarantor by
its Chairman, its President, a Vice Chairman, any Vice President, its Treasurer
or Assistant Treasurer, under its corporate seal reproduced thereon and attested
by its Corporate Secretary or one of its Assistant Corporate Secretaries. The
signature of any of these officers on the Guarantees may be manual or facsimile.



                                      -34-


<PAGE>   43




                  The seal of the Company or the Guarantor, as the case may be,
may be in the form of a facsimile thereof and may be impressed, affixed,
imprinted or otherwise reproduced on the Securities. Securities bearing the
manual or facsimile signatures of individuals who were at any time the proper
officers of the Company or of the Guarantor shall bind the Company or the
Guarantor, as the case may be, notwithstanding that such individuals or any of
them have ceased to hold such offices prior to the authentication and delivery
of such Securities or did not hold such offices at the date of such Securities.
Minor typographical and other minor errors in the text of any Security or the
Guarantee endorsed thereon or minor defects in the seal or facsimile signature
on any Security or the Guarantee endorsed thereon shall not affect the validity
or enforceability of such Security or such Guaranty if such Security has been
duly authenticated and delivered by the Trustee.

                  At any time and from time to time after the execution and
delivery of this Indenture, the Company may deliver Securities of any series
executed by the Company and having endorsed thereon Guarantees executed by the
Guarantor to the Trustee for authentication, together with a Company Order of
the Company for the authentication and delivery of such Securities, and the
Trustee in accordance with such Company Order shall authenticate and deliver
such Securities having such Guarantees endorsed thereon. If the form or terms of
the Securities of the series or the form of Guarantees endorsed thereon have
been established in or pursuant to one or more Board Resolutions as permitted by
Sections 201 and 301, in authenticating such Securities, and accepting the
additional responsibilities under this Indenture in relation to such Securities
and Guarantees endorsed thereon, the Trustee shall be entitled to receive, and
(subject to Section 601) shall be fully protected in relying upon, an Opinion of
Counsel stating,

                  (a) if the form or forms of such Securities and the applicable
         Guarantees have been established by or pursuant to Board Resolution as
         permitted by Section 201, that such form or forms have been established
         in conformity with the provisions of this Indenture;

                  (b) if the terms of such Securities and the applicable
         Guarantees have been established by or pursuant to Board Resolution as
         permitted by Section 301, that such terms have been established in



                                      -35-


<PAGE>   44



         conformity with the provisions of this Indenture;

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

                  (d) that such Guarantees, when the Securities on which such
         Guarantees are endorsed are authenticated and delivered by the Trustee
         and issued by the Company in the manner and subject to any conditions
         specified in such Opinion of Counsel, will constitute valid and legally
         binding obligations of the Guarantor, enforceable in accordance with
         their terms, subject to bankruptcy, insolvency, reorganization and
         other laws of general applicability relating to or affecting the
         enforcement of creditors' rights and to general equity principles.

                  The Trustee shall have the right to decline to authenticate
and deliver any Securities under this Section if the Trustee, being advised by
counsel, determines that such action may not lawfully be taken or if the Trustee
in good faith by its board of directors, executive committee, or a trust
committee of directors or responsible officers of the Trustee shall determine
that such action would expose the Trustee to personal liability to existing
Holders of Securities.

                  Notwithstanding the provisions of Section 301 and of the
preceding paragraph, if all Securities of a series are not to be originally
issued at one time, it shall not be necessary to deliver the Officers'
Certificate otherwise required pursuant to Section 301 or the Company Order and
Opinion of Counsel otherwise required pursuant to such preceding paragraph at or
prior to the time of authentication of each Security of such series if such



                                      -36-


<PAGE>   45



documents are delivered at or prior to the authentication upon original issuance
of the first Security of such series to be issued.

                  Each Security and the applicable Guarantee shall be dated the
date of its authentication.

                  No Security or Guarantee endorsed thereon shall be entitled to
any benefit under this Indenture or be valid or obligatory for any purpose
unless there appears on such Security a certificate of authentication
substantially in the form provided for herein executed by the Trustee by manual
signature, and such certificate upon any Security shall be conclusive evidence,
and the only evidence, that such Security has been duly authenticated and
delivered hereunder and that such Security or Guarantee is entitled to the
benefits of this Indenture. Notwithstanding the foregoing, if any Security shall
have been authenticated and delivered hereunder but never issued and sold by the
Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 309, for all purposes of this Indenture such
Security and the Guarantee endorsed thereon shall be deemed never to have been
authenticated and delivered hereunder and shall never be entitled to the
benefits of this Indenture.

Section 304. Temporary Securities.

                  Pending the preparation of definitive Securities of any
series, the Company may execute, and upon Company Order the Trustee shall
authenticate and deliver, temporary Securities substantially of the tenor of the
definitive Securities in lieu of which they are issued and having endorsed
thereon Guarantees of the Guarantor substantially of the tenor of definitive
Guarantees, which Securities and Guarantees may be printed, lithographed,
typewritten, mimeographed or otherwise produced, in any authorized denomination
and with such appropriate insertions, omissions, substitutions and other
variations as the officers executing such Securities or such Guarantees may
determine, as evidenced by their execution of such Securities and such
Guarantees.

                  If temporary Securities of any series are issued, the Company
will cause definitive Securities of that series to be prepared without
unreasonable delay. After the preparation of definitive Securities of such
series, the temporary Securities of such series shall be exchangeable for
definitive Securities of such series upon surrender of the temporary Securities
of such series at the office or



                                      -37-


<PAGE>   46



agency of the Company in a Place of Payment for that series, without charge to
the Holder. Upon surrender for cancellation of any one or more temporary
Securities of any series, the Company shall execute and the Trustee shall
authenticate and deliver in exchange therefor one or more definitive Securities
of the same series, of any authorized denominations and of a like aggregate
principal amount and tenor which have endorsed thereon Guarantees duly executed
by the Guarantor. Until so exchanged the temporary Securities of any series
shall in all respects be entitled to the same benefits under this Indenture as
definitive Securities of such series and tenor.

Section 305. Registration, Registration of Transfer and Exchange.

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

                  Upon surrender for registration of transfer of any Security of
any series at the office or agency in a Place of Payment for that series, the
Company shall execute, and the Trustee shall authenticate and deliver, in the
name of the designated transferee or transferees, one or more new Securities of
the same series, of any authorized denominations and of a like aggregate
principal amount and tenor which have endorsed thereon a Guarantee duly executed
by the Guarantor.

                  At the option of the Holder, Securities of any series may be
exchanged for other Securities of the same series, of any authorized
denominations and of a like aggregate principal amount and tenor, each such
Security having endorsed thereon a Guarantee duly executed by the Guarantor upon
surrender of the Securities to be exchanged at such office or agency. Whenever
any Securities are so surrendered for exchange, the Company shall execute, and
the Trustee shall authenticate and deliver, the Securities which the Holder
making the exchange is entitled to receive.



                                      -38-


<PAGE>   47



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

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

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

                  Unless otherwise required by the rules of any stock exchange
on which the Securities are listed or of any quotation system through which the
Securities are traded, neither the Company nor the Trustee shall be required (i)
to issue, register the transfer of or exchange Securities of any series during a
period beginning at the opening of business 15 days before the day of the
mailing of a notice of redemption of Securities of that series selected for
redemption under Section 1103 and ending at the close of business on the day of
such mailing, or (ii) to register the transfer of or exchange any Security so
selected for redemption in whole or in part, except the unredeemed portion of
any Security being redeemed in part.

                  Notwithstanding any other provision in this Indenture, no
Global Security may be transferred to, or registered or exchanged for Securities
registered in the name of, any Person other than the Depositary for such Global
Security or any nominee thereof, and no such transfer may be registered, unless
(1) such Depositary (A) notifies the Company and the Trustee that it is
unwilling or unable to continue as Depositary for such Global Security or (B)
ceases to be a clearing agency registered under the Exchange Act, (2) the
Company executes and delivers to the Trustee a Company Order that such Global
Security shall be so transferable, registrable and exchangeable, and such



                                      -39-


<PAGE>   48



transfers shall be registrable, (3) there shall have occurred and be continuing
an Event of Default with respect to the Securities evidenced by such Global
Security or (4) there shall exist such other circumstances, if any, as have been
specified for this purpose as contemplated by Section 301. Notwithstanding any
other provision in this Indenture, a Global Security to which the restriction
set forth in the preceding sentence shall have ceased to apply may be
transferred only to, and may be registered and exchanged for Securities
registered only in the name or names of, such Person or Persons as the
Depositary for such Global Security shall have directed and no transfer thereof
other than such a transfer may be registered.

                  Every Security authenticated and delivered upon registration
of transfer of, or in exchange for or in lieu of, a Global Security to which the
restriction set forth in the first sentence of the preceding paragraph shall
apply, whether pursuant to this Section, Section 304, 306, 906 or 1107 or
otherwise, shall be authenticated and delivered in the form of, and shall be, a
Global Security.

Section 306. Mutilated, Destroyed, Lost and Stolen Securities.

                  If there shall be delivered to the Company and the Trustee (i)
a mutilated Security, or (ii) evidence to their satisfaction of the destruction,
loss or theft of any Security and in either case such security or indemnity as
may be required by either of them to save each of them and any agent of either
of them harmless, then, in the absence of notice to the Company or the Trustee
that such Security has been acquired by a bona fide purchaser, the Company shall
execute and the Trustee shall authenticate and deliver, in lieu of any such
mutilated, destroyed, lost or stolen Security, a new Security of the same series
and of like tenor and principal amount having endorsed thereon a Guarantee duly
executed by the Guarantor, and bearing a number not contemporaneously
outstanding.

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

                  Upon the issuance of any new Security under this Section, the
Company or the Trustee may require the payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in relation thereto and any
other



                                      -40-


<PAGE>   49



expenses (including the fees and expenses of the Trustee) connected therewith.

                  Every new Security of any series issued pursuant to this
Section in lieu of any destroyed, lost or stolen Security shall constitute an
original additional contractual obligation of the Company and the Guarantor,
whether or not the destroyed, lost or stolen Security shall be at any time
enforceable by anyone, and shall be entitled to all the benefits of this
Indenture equally and proportionately with any and all other Securities of that
series duly issued hereunder.

                  The provisions of this Section are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Securities.

Section 307. Payment of Interest; Interest Rights Preserved.

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

                  Any interest on any Security of any series which is payable,
but is not punctually paid or duly provided for, on any Interest Payment Date
(herein called "Defaulted Interest") shall forthwith cease to be payable to the
Holder on the relevant Regular Record Date by virtue of having been such Holder,
and such Defaulted Interest may be paid by the Company, at its election in each
case, as provided in Clause (1) or (2) below:

                  (1) The Company may elect to make payment of any Defaulted
         Interest to the Persons in whose names the Securities of such series
         (or their respective Predecessor Securities) are registered at the
         close of business on a Special Record Date for the payment of such
         Defaulted Interest, which shall be fixed in the following manner. The
         Company shall notify the Trustee in writing of the amount of Defaulted
         Interest proposed to be paid on each Security of such series



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<PAGE>   50



         and the date of the proposed payment, and at the same time the Company
         shall deposit with the Trustee an amount of money equal to the
         aggregate amount proposed to be paid in respect of such Defaulted
         Interest or shall make arrangements satisfactory to the Trustee for
         such deposit prior to the date of the proposed payment, such money when
         deposited to be held in trust for the benefit of the Persons entitled
         to such Defaulted Interest as in this Clause provided. Thereupon the
         Trustee shall fix a Special Record Date for the payment of such
         Defaulted Interest which shall be not more than 15 days and not less
         than 10 days prior to the date of the proposed payment and not less
         than 15 days after the receipt by the Trustee of the notice of the
         proposed payment. The Trustee shall promptly notify the Company of such
         Special Record Date and, in the name and at the expense of the Company,
         shall cause notice of the proposed payment of such Defaulted Interest
         and the Special Record Date therefor to be mailed, first-class postage
         prepaid, to each Holder of Securities of such series at its address as
         it appears in the Security Register, not less than 10 days prior to
         such Special Record Date. Notice of the proposed payment of such
         Defaulted Interest and the Special Record Date therefor having been so
         mailed, such Defaulted Interest shall be paid to the Persons in whose
         names the Securities of such series (or their respective Predecessor
         Securities) are registered at the close of business on such Special
         Record Date and shall no longer be payable pursuant to the following
         Clause (2).

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



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<PAGE>   51




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

Section 308. Persons Deemed Owners.

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

                  No holder of any beneficial interest in any Global Security
held on its behalf by a Depositary shall have any rights under this Indenture
with respect to such Global Security, and such Depositary may be treated by the
Company, the Guarantor, the Trustee, and any agent of the Company, the Guarantor
or the Trustee as the owner of such Global Security for all purposes whatsoever.
Notwithstanding the foregoing, nothing herein shall impair, as between a
Depositary and such holders of beneficial interests, the operation of customary
practices governing the exercise of the rights of the Depositary as Holder of
any Security.

Section 309. Cancellation.

                  All Securities surrendered for payment, redemption,
registration of transfer or exchange or for credit against any sinking fund
payment shall, if surrendered to any Person other than the Trustee, be delivered
to the Trustee and shall be promptly cancelled by it. The Company or the
Guarantor may at any time deliver to the Trustee for cancellation any Securities
previously authenticated and delivered hereunder which the Company or the
Guarantor may have acquired in any manner whatsoever, and may deliver to the
Trustee (or to any other Person for delivery to the Trustee) for cancellation
any Securities previously authenticated hereunder which the Company has not
issued and sold, and all Securities so delivered shall be promptly cancelled by
the Trustee. No Securities shall be authenticated in lieu of or in exchange for
any Securities



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<PAGE>   52



cancelled as provided in this Section, except as expressly permitted by this
Indenture. All cancelled Securities held by the Trustee shall be disposed of as
directed by a Company Order. Acquisition by the Company or the Guarantor of any
Security shall not operate as a redemption or satisfaction of the indebtedness
represented by such Security unless and until the same is delivered to the
Trustee for cancellation.

Section 310. Computation of Interest.

                  Except as otherwise specified as contemplated by Section 301
for Securities of any series, interest on the Securities of each series shall be
computed on the basis of a 360-day year of twelve 30-day months and, for any
period shorter than a full monthly period, shall be computed on the basis of the
actual number of days elapsed in such period.

                                  ARTICLE FOUR

                           Satisfaction and Discharge

Section 401. Satisfaction and Discharge of Indenture.

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

                  (1) either

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



                                      -44-


<PAGE>   53
                  (B) all such Securities of such series not theretofore
         delivered to the Trustee for cancellation

                           (i) have become due and payable, or

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

                           (iii) are to be called for redemption within one year
                  under arrangements satisfactory to the Trustee for the giving
                  of notice of redemption by the Trustee in the name, and at the
                  expense, of the Company,

         and the Company or the Guarantor, in the case of (i), (ii) or (iii)
         above, has deposited or caused to be deposited with the Trustee in
         trust for the purpose (A) money (either in United States dollars or
         such other currency or currency unit in which the Securities of any
         series may be payable) in an amount, or (B) U.S. Government Obligations
         (or Foreign Government Obligations if the Securities are denominated in
         a foreign currency or currencies) that through the scheduled payment of
         principal and interest in respect thereof in accordance with their
         terms will provide, not later than one day before the due date of any
         payment, money in an amount, or (C) a combination thereof, sufficient
         to pay and discharge the entire indebtedness on such Securities of such
         series not theretofore delivered to the Trustee for cancellation, for
         principal of (and premium, if any) and interest to the date of such
         deposit (in the case of Securities of such series which have become due
         and payable) or to the Stated Maturity or Redemption Date, as the case
         may be;

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

                  (3) the Company has delivered to the Trustee an Officers'
         Certificate and an



                                      -45-


<PAGE>   54



         Opinion of Counsel, each stating that all conditions precedent herein
         provided for relating to the satisfaction and discharge of this
         Indenture with respect to such series have been complied with.

                  In the event there are Securities of two or more series
outstanding hereunder, the Trustee shall be required to execute an instrument
acknowledging satisfaction and discharge of this Indenture only if requested to
do so with respect to Securities of a particular series as to which it is
Trustee and if the other conditions thereto are met. In the event that there are
two or more Trustees hereunder, then the effectiveness of any such instrument
shall be conditioned upon receipt of such instruments from all Trustees
hereunder.

                  Notwithstanding the satisfaction and discharge of this
Indenture with respect to a particular series, the obligations of the Company
and the Guarantor to the Trustee under Section 607, the obligations of the
Trustee to any Authenticating Agent under Section 614 and, if money shall have
been deposited with the Trustee pursuant to subclause (B) of Clause (1) of this
Section, the obligations of the Trustee under Section 402 and the last paragraph
of Section 1003 shall survive until there are no Securities Outstanding with
respect to a particular series and the obligations of the Company, the Guarantor
and the Trustee with respect to all other series of Securities shall survive.

Section 402. Application of Trust Fund.

                  Subject to provisions of the last paragraph of Section 1003,
all amounts deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it, in accordance with the provisions of the Securities and
this Indenture, to the payment, either directly or through any Paying Agent
(including the Company or the Guarantor acting as its own Paying Agent) as the
Trustee may determine, to the Persons entitled thereto, of the principal and any
premium and interest for whose payment such funds have been deposited with the
Trustee.



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<PAGE>   55



                                  ARTICLE FIVE

                                    Remedies

Section 501. Events of Default.

                  "Event of Default" whenever used with respect to Securities of
a series means any one of the following events and such other events as may be
established with respect to the Securities of such series as contemplated by
Section 301 hereof:

                  (1) Default in the payment of any instalment of interest upon
         any of the Securities of such series as and when the same shall become
         due and payable, and continuance of such default for a period of 30
         days; or

                  (2) Default in the payment of the principal of or premium, if
         any, on any of the Securities of such series as and when the same shall
         become due and payable either at maturity, upon redemption, by
         declaration or otherwise; or

                  (3) Default in the making of any sinking fund payment, whether
         mandatory or optional, as and when the same shall become due and
         payable by the terms of the Securities of such series; or

                  (4) Failure on the part of the Company or the Guarantor duly
         to observe or perform in any material respect any other of the
         covenants or agreements on the part of the Company or the Guarantor
         contained in this Indenture (other than those set forth exclusively in
         the terms of any other particular series of Securities established as
         contemplated by this Indenture for the benefit of such other series)
         and written notice of such failure, stating that such notice is a
         "Notice of Default" hereunder, and requiring the Company or the
         Guarantor, as the case may be, to remedy the same, shall have been
         given by registered or certified mail, return receipt requested, to the
         Company and the Guarantor by the Trustee, or to the Company, the
         Guarantor and the Trustee by the holders of at least 25% in aggregate
         principal amount of the Outstanding Securities of that series, and such
         failure shall have continued unremedied for a period of 90 days after
         the date



                                      -47-


<PAGE>   56



         of the Company's and the Guarantor's receipt of such Notice of Default;
         or

                  (5) An event of default, as defined in any indenture or
         instrument evidencing or under which the Company, the Guarantor or any
         Principal Subsidiary shall have outstanding indebtedness for borrowed
         money in a principal amount in excess of $50,000,000, shall happen and
         be continuing and such indebtedness shall have been accelerated so that
         the same shall be or become due and payable prior to the date on which
         the same would otherwise have become due and payable (other than
         acceleration of Non-Recourse Debt which does not exceed in the
         aggregate 4% of the Guarantor's total shareholders' equity, as set
         forth in the most recently published audited consolidated balance sheet
         of the Guarantor) or the Company, the Guarantor or any Principal
         Subsidiary shall default in the payment at final maturity of
         outstanding indebtedness for borrowed money in a principal amount in
         excess of $50,000,000 (other than default in payment at final maturity
         of Non-Recourse Debt which does not exceed in the aggregate 4% of the
         Guarantor's total shareholders' equity as set forth in the most
         recently published audited consolidated balance sheet of the
         Guarantor), and such acceleration or default at maturity shall not be
         waived, rescinded or annulled within 30 days after written notice
         thereof, stating that such notice is a "Notice of Default" hereunder,
         shall have been given to the Company and the Guarantor by the Trustee
         (if such event be known to it), or to the Company, the Guarantor and
         the Trustee by the holders of at least 25% in aggregate principal
         amount of the Outstanding Securities of that series; provided, however,
         that if such acceleration under such indenture or instrument or default
         at maturity shall be remedied or cured by the Company, the Guarantor or
         Principal Subsidiary, or waived, rescinded or annulled by the requisite
         holders of such indebtedness, then the Event of Default hereunder by
         reason thereof shall be deemed likewise to have been thereupon
         remedied, cured or waived without further action upon the part of
         either the Trustee or any of the Holders; and provided further, that,
         subject to the provisions of Sections 601 and 602, the Trustee shall
         not be charged with knowledge of any such default unless



                                      -48-


<PAGE>   57



         written notice thereof shall have been given to the Trustee by the
         Company or the Guarantor, as the case may be, by the holder of any such
         indebtedness or an agent of the holder of any such indebtedness, by the
         trustee then acting under any such indenture or other instrument under
         which such default shall have occurred, or by the holders of at least
         25% in aggregate principal amount of the Outstanding Securities of that
         series; or

                  (6) A decree or order by a court having jurisdiction in the
         premises shall have been entered adjudging the Company or the Guarantor
         a bankrupt or insolvent, or approving as properly filed a petition
         seeking reorganization, arrangement, adjustment or composition of the
         Company or the Guarantor under any applicable Federal or State
         bankruptcy or similar law, and such decree or order shall have
         continued undischarged and unstayed for a period of 90 days; or a
         decree or order of a court having jurisdiction in the premises for the
         appointment of a receiver, liquidator, trustee, assignee, sequestrator
         or similar official in bankruptcy or insolvency of the Company or the
         Guarantor or of all or substantially all of the Company's or the
         Guarantor's property, or for the winding up or liquidation of the
         Company's or the Guarantor's affairs, shall have been entered, and such
         decree or order shall have continued undischarged and unstayed for a
         period of 90 days; or

                  (7) The Company or the Guarantor shall institute proceedings
         to be adjudicated a voluntary bankrupt, or shall consent to the filing
         of a bankruptcy proceeding against it, or shall file a petition or
         answer or consent seeking reorganization, arrangement, adjustment or
         composition under any applicable Federal or State bankruptcy or similar
         law, or shall consent to the filing of any such petition, or shall
         consent to the appointment of a receiver, liquidator, trustee,
         assignee, sequestrator or similar official in bankruptcy or insolvency
         of the Company or the Guarantor or of all or substantially all of the
         Company's or the Guarantor's property, or shall make an assignment for
         the benefit of creditors, or either the Company or the Guarantor shall
         admit in writing



                                      -49-


<PAGE>   58



         its inability to pay its debts generally as they become due and its
         willingness to be adjudged a bankrupt, or corporate action shall be
         taken by the Company or the Guarantor in furtherance of any of the
         aforesaid purposes.

                  Upon receipt by the Trustee of any Notice of Default pursuant
to this Section 501 with respect to Securities of any series, a record date
shall automatically and without any other action by any Person be set for the
purpose of determining the holders of Outstanding Securities of such series
entitled to join in such Notice of Default, which record date shall be the close
of business on the day the Trustee receives such Notice of Default. The Holders
of Outstanding Securities of such series on such record date (or their duly
appointed agents), and only such Persons, shall be entitled to join in such
Notice of Default, whether or not such Holders remain Holders after such record
date; provided that, unless such Notice of Default shall have become effective
by virtue of Holders of at least 25% in principal amount of Outstanding
Securities of such series on such record date (or their duly appointed agents)
having joined therein on or prior to the 90th day after such record date, such
Notice of Default shall automatically and without any action by any Person be
cancelled and of no further effect. Nothing in this paragraph shall prevent a
Holder (or a duly appointed agent thereof) from giving, before or after the
expiration of such 90-day period, a Notice of Default contrary to or different
from, or, after the expiration of such period, identical to, a Notice of Default
that has been cancelled pursuant to the proviso to the preceding sentence, in
which event a new record date in respect thereof shall be set pursuant to this
paragraph.

Section 502. Acceleration of Maturity; Rescission and Annulment.

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



                                      -50-


<PAGE>   59



such principal amount (or specified amount) and all accrued interest thereon
shall become immediately due and payable.

                  At any time after such a declaration of acceleration with
respect to Securities of any series has been made and before a judgment or
decree for payment of the money due has been obtained by the Trustee as
hereinafter in this Article provided, the Holders of a majority in principal
amount of the Outstanding Securities of that series, by written notice to the
Company, the Guarantor and the Trustee, may rescind and annul such declaration
and its consequences if

                  (1) the Company or the Guarantor has paid or deposited with
         the Trustee a sum sufficient to pay

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

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

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

                           (D) all sums paid or advanced by the Trustee
                  hereunder and the reasonable compensation, expenses,
                  disbursements and advances of the Trustee, its agents and
                  counsel except such costs and expenses as are a result of
                  negligence or bad faith on the part of the Trustee;

         and

                  (2) all Events of Default with respect to Securities of that
         series, other than the non-payment of the principal of and interest, if
         any, on the Securities of that series which have become due solely by
         such



                                      -51-


<PAGE>   60



         declaration of acceleration, have been cured
         or waived as provided in Section 513.

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

                  Upon receipt by the Trustee of any declaration of
acceleration, or any rescission and annulment of any such declaration, pursuant
to this Section 502 with respect to Securities of any series, a record date
shall automatically and without any other action by any Person be set for the
purpose of determining the Holders of Outstanding Securities of such series
entitled to join in such declaration, or rescission and annulment, as the case
may be, which record date shall be the close of business on the day the Trustee
receives such declaration, or rescission and annulment, as the case may be. The
Holders of Outstanding Securities of such series on such record date (or their
duly appointed agents), and only such Persons, shall be entitled to join in such
declaration, or rescission and annulment, as the case may be, whether or not
such Holders remain Holders after such record date; provided that, unless such
declaration, or rescission and annulment, as the case may be, shall have become
effective by virtue of Holders of at least 25%, in the case of any declaration
of acceleration, or a majority, in the case of any rescission or annulment, in
principal amount of Outstanding Securities of such series on such record date
(or their duly appointed agents) having joined therein on or prior to the 90th
day after such record date, such declaration, or rescission and annulment, as
the case may be, shall automatically and without any action by any Person be
cancelled and of no further effect. Nothing in this paragraph shall prevent a
Holder (or a duly appointed agent thereof) from giving, before or after the
expiration of such 90-day period, a declaration of acceleration, or a rescission
and annulment of any such declaration, contrary to or different from, or, after
the expiration of such period, identical to, a declaration, or rescission and
annulment, as the case may be, that has been cancelled pursuant to the proviso
to the preceding sentence, in which event a new record date in respect thereof
shall be set pursuant to this paragraph.

Section 503. Collection of Indebtedness and Suits for Enforcement by Trustee.

                  The Company covenants that if

                  (1) default is made in the payment of any interest on any
        Security when such



                                      -52-


<PAGE>   61



         interest becomes due and payable and such
         default continues for a period of 30 days, or

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

the Company will, upon written demand of the Trustee, pay to it, for the benefit
of the Holders of such Securities, the whole amount then due and payable on such
Securities for principal and any premium and interest and, to the extent that
payment of such interest shall be legally enforceable, interest on any overdue
principal and premium and on any overdue interest, at the rate or rates
prescribed therefor in such Securities, and, in addition thereto, such further
amount as shall be sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel except such costs and expenses, as are a
result of negligence or bad faith on the part of the Trustee. Until such demand
is made by the Trustee, the Company may pay the principal of and premium, if
any, and interest, if any, on the Securities of any series to the Holders
thereof, whether or not the Securities of such series are overdue.

                  If the Company fails to pay such amounts forthwith upon such
demand, the Trustee, in its own name and as trustee of an express trust, may
institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company, the Guarantor or any other obligor upon
such Securities and collect the moneys adjudged or decreed to be payable in the
manner provided by law out of the property of the Company, the Guarantor or any
other obligor upon such Securities, wherever situated.

                  If an Event of Default with respect to Securities of any
series occurs and is continuing, the Trustee may in its discretion proceed to
protect and enforce its rights and the rights of the Holders of Securities of
such series by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any such rights, whether for the specific
enforcement of any covenant or agreement in this Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.



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<PAGE>   62
Section 504.  Trustee May File Proofs of Claim.

                  In case of any judicial proceeding relative to the Company,
the Guarantor or any other obligor upon the Securities or the property of the
Company, the Guarantor or such other obligor or their creditors, the Trustee
shall be entitled and empowered, by intervention in such proceeding or
otherwise, to take any and all actions authorized under the Trust Indenture Act
in order to have claims of the Holders and the Trustee allowed in any such
proceeding. In particular, the Trustee shall be authorized
                  (i) to file and prove a claim for the whole amount of
         principal (and premium, if any) and interest owing and unpaid in
         respect of the Securities in accordance with the terms thereof and to
         file such other papers or documents as may be necessary or advisable in
         order to have the claims of the Trustee (including any claim for the
         reasonable compensation, expenses, disbursements and advances of the
         Trustee, its agents and counsel) and of the Holders allowed in such
         judicial proceeding, and

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

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
other similar official in any such judicial proceeding is hereby authorized by
each Holder to make such payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the Holders, to
pay to the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 607 except such costs and expenses, as are
a result of negligence or bad faith on the part of the Trustee.

                  No provision of this Indenture shall be deemed to authorize
the Trustee to authorize or consent to or accept or adopt on behalf of any
Holder any plan of reorganization, arrangement, adjustment or composition
affecting the Securities or the rights of any Holder thereof or to authorize the
Trustee to vote in respect of the claim of any Holder in any such proceeding;
provided, however, that the Trustee may, on behalf of the Holders, vote for the
election of a trustee in bankruptcy or similar official and be a member of a
creditors' or other similar committee.


                                      -54-
<PAGE>   63
Section 505.      Trustee May Enforce Claims Without
                  Possession of Securities.

                  All rights of action and claims under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without the possession
of any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name as trustee of an express trust, and any recovery of judgment shall,
after provision for the payment of the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel except such
costs and expenses, as are a result of negligence or bad faith on the part of
the Trustee, be for the ratable benefit of the Holders of the Securities in
respect of which such judgment has been recovered.

Section 506.      Application of Money Collected.

                  Any money collected by the Trustee pursuant to this Article
shall be applied in the following order, at the date or dates fixed by the
Trustee and, in case of the distribution of such money on account of principal
or any premium or interest, upon presentation of the Securities and the notation
thereon of the payment if only partially paid and upon surrender thereof if
fully paid:

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

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

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

Section 507.      Limitation on Suits.

                  No Holder of any Security of any series shall have any right
to institute any proceeding, judicial or otherwise, with respect to this
Indenture or for the


                                      -55-
<PAGE>   64
appointment of a receiver or trustee, or for any other remedy hereunder, unless

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

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

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

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

                  (5) no direction inconsistent with such written request has
         been given to the Trustee during such 60-day period by the Holders of a
         majority in principal amount of the Outstanding Securities of that
         series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

Section 508.      Unconditional Right of Holders to Receive
                  Principal, Premium and Interest.

                  Notwithstanding any other provision in this Indenture, the
Holder of any Security shall have the right, which is absolute and
unconditional, to receive payment of the principal of and any premium and
(subject to


                                      -56-
<PAGE>   65
Section 307) any interest on such Security on the Stated Maturity or Maturities
expressed in such Security (or, in the case of redemption, on the Redemption
Date) and to institute suit for the enforcement of any such payment, and such
rights shall not be impaired without the consent of such Holder.

Section 509.      Restoration of Rights and Remedies.

                  If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Guarantor, the Trustee and
the Holders shall be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Trustee and
the Holders shall continue as though no such proceeding had been instituted.

Section 510.      Rights and Remedies Cumulative.

                  Except as otherwise provided with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities in the last
paragraph of Section 306, no right or remedy herein conferred upon or reserved
to the Trustee or to the Holders is intended to be exclusive of any other right
or remedy, and every right and remedy shall, to the extent permitted by law, be
cumulative and in addition to every other right and remedy given hereunder or
now or hereafter existing at law or in equity or otherwise. The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent the
concurrent assertion or employment of any other appropriate right or remedy.

Section 511.      Delay or Omission Not Waiver.

                  No delay or omission of the Trustee or of any Holder of any
Securities to exercise any right or remedy accruing upon any Event of Default
shall impair any such right or remedy or constitute a waiver of any such Event
of Default or an acquiescence therein. Subject to Section 507, every right and
remedy given by this Article or by law to the Trustee or to the Holders may be
exercised from time to time, and as often as may be deemed expedient, by the
Trustee or by the Holders, as the case may be.


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Section 512.      Control by Holders.

                  The Holders of a majority in principal amount of the
Outstanding Securities of any series shall have the right to direct the time,
method and place of conducting any proceeding for any remedy available to the
Trustee, or exercising any trust or power conferred on the Trustee, with respect
to the Securities of such series, provided that

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

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

                  Upon receipt by the Trustee of any such direction with respect
to Securities of any series, a record date shall be set for determining the
Holders of Outstanding Securities of such series entitled to join in such
direction, which record date shall be the close of business on the day the
Trustee receives such direction. The Holders of Outstanding Securities of such
series on such record date (or their duly appointed agents), and only such
Persons, shall be entitled to join in such direction, whether or not such
Holders remain Holders after such record date; provided that, unless such
direction shall have become effective by virtue of Holders of at least a
majority in principal amount of Outstanding Securities of such series on such
record date (or their duly appointed agents) having joined therein on or prior
to the 90th day after such record date, such direction shall automatically and
without any action by any Person be cancelled and of no further effect. Nothing
in this paragraph shall prevent a Holder (or a duly appointed agent thereof)
from giving, before or after the expiration of such 90-day period, a direction
contrary to or different from, or, after the expiration of such period,
identical to, a direction that has been cancelled pursuant to the proviso to the
preceding sentence, in which event a new record date in respect thereof shall be
set pursuant to this paragraph.

Section 513.      Waiver of Past Defaults.

                  The Holders of not less than a majority in principal amount of
the Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series waive any past default hereunder with respect to such
series and its consequences, except a default


                                      -58-
<PAGE>   67
                  (1) in the payment of the principal of or any premium or
         interest on any Security of such series, or

                  (2) in respect of a covenant or provision hereof which under
         Article Nine cannot be modified or amended without the consent of the
         Holder of each Outstanding Security of such series affected.

                  With respect to any series of Securities, the Company or the
Guarantor may, but shall not be obligated to, establish a record date for the
purpose of determining the Persons entitled to waive any past default hereunder.
If a record date is fixed, the Holders on such record date, or their duly
designated proxies, and only such Persons, shall be entitled to waive any
default hereunder, whether or not such Holders remain Holders after such record
date; provided, however, that unless such Holders of not less than a majority in
principal amount of the Outstanding Securities of such series shall have waived
such default prior to the date which is 90 days after such record date, any such
waiver previously given shall automatically and without further action by any
Holder be cancelled and of no effect.

                  Upon any such waiver, such default shall cease to exist, and
any Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or impair any right consequent thereon.

Section 514.      Undertaking for Costs.

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


                                   ARTICLE SIX

                                   The Trustee


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<PAGE>   68
Section 601.      Certain Duties and Responsibilities.

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

Section 602.      Notice of Defaults.

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

Section 603.      Certain Rights of Trustee.

                  Subject to the provisions of Section 601:

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

                  (b) any request or direction of the Company or the Guarantor
         mentioned herein shall be sufficiently evidenced by a Company

                                      -60-
<PAGE>   69
         Request or Company Order and any resolution of the Board of Directors
         of the Company or the Guarantor may be sufficiently evidenced by a
         Board Resolution;

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

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

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

                  (f) prior to the occurrence of an Event of Default and after
         the remedy or waiver of all Events of Default, the Trustee shall not be
         bound to make any investigation into the facts or matters stated in any
         resolution, certificate, statement, instrument, opinion, report,
         notice, request, direction, consent, order, bond, debenture, note,
         other evidence of indebtedness or other paper or document, but the
         Trustee, in its discretion, may make such further inquiry or
         investigation into such facts or matters as it may see fit, and, if the
         Trustee shall determine to make such further inquiry or investigation,
         it

                                      -61-
<PAGE>   70
         shall upon reasonable notice to the Company and the Guarantor be
         entitled to examine the books, records and premises of the Company and
         the Guarantor, personally or by agent or attorney at a time and place
         acceptable to the Company or the Guarantor, as the case may be; and

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

Section 604.      Not Responsible for Recitals or
                  Issuance of Securities.

                  The recitals contained herein and in the Securities, except
the Trustee's certificates of authentication, shall be taken as the statements
of the Company or the Guarantor, as the case may be, and the Trustee or any
Authenticating Agent assumes no responsibility for their correctness. The
Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Securities or of the Guarantees. The Trustee or any
Authenticating Agent shall not be accountable for the use or application by the
Company of Securities or the proceeds thereof.

Section 605.      May Hold Securities.

                  The Trustee, any Authenticating Agent, any Paying Agent, any
Security Registrar or any other agent of the Company or the Guarantor, in its
individual or any other capacity, may become the owner or pledgee of Securities
and, subject to Sections 608 and 613, may otherwise deal with the Company or the
Guarantor with the same rights it would have if it were not Trustee,
Authenticating Agent, Paying Agent, Security Registrar or such other agent.

Section 606.      Money Held in Trust.

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

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<PAGE>   71
otherwise agreed with the Company or the Guarantor, as the case may be.

Section 607.      Compensation and Reimbursement.

                  The Company and the Guarantor agree

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

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

                  (3) to indemnify the Trustee for, and to hold it harmless
         against, any loss, liability or expense incurred without negligence or
         bad faith on its part, arising out of or in connection with the
         acceptance or administration of the trust or trusts hereunder,
         including the reasonable costs and expenses of defending itself against
         any claim or liability in connection with the exercise or performance
         of any of its powers or duties hereunder.

Section 608.      Disqualification; Conflicting
                  Interests.

                  If the Trustee has or shall acquire a conflicting interest
within the meaning of the Trust Indenture Act, the Trustee shall either
eliminate such interest or resign, to the extent and in the manner provided by,
and subject to the provisions of, the Trust Indenture Act and this Indenture.


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<PAGE>   72
Section 609.      Corporate Trustee Required;
                  Eligibility.

                  There shall at all times be a Trustee hereunder which shall be
a Person that is eligible pursuant to the Trust Indenture Act to act as such and
has a combined capital and surplus of at least $50,000,000 or is a subsidiary of
a corporation which shall be a Person that has a combined capital and surplus of
at least $50,000,000 and which unconditionally guarantees the obligations of the
Trustee hereunder. If such Person publishes reports of condition at least
annually, pursuant to law or to the requirements of said supervising or
examining authority, then for the purposes of this Section, the combined capital
and surplus of such Person shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. If at
any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section, it shall resign immediately in the manner and with
the effect hereinafter specified in this Article.

Section 610.      Resignation and Removal;
                  Appointment of Successor.

                  (a) No resignation or removal of the Trustee and no
appointment of a successor Trustee pursuant to this Article shall become
effective until the acceptance of appointment by the successor Trustee in
accordance with the applicable requirements of Section 611.

                  (b) The Trustee may resign at any time with respect to the
Securities of one or more series by giving written notice thereof to the Company
and the Guarantor. If the instrument of acceptance by a successor Trustee
required by Section 611 shall not have been delivered to the Trustee within 30
days after the giving of such notice of resignation, the resigning Trustee may
petition any court of competent jurisdiction for the appointment of a successor
Trustee with respect to the Securities of such series.

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

                  (d)  If at any time:


                                      -64-
<PAGE>   73
                  (1) the Trustee shall fail to comply with Section 608 after
         written request therefor by the Company or the Guarantor or by any
         Holder who has been a bona fide Holder of a Security for at least six
         months, or

                  (2) the Trustee shall cease to be eligible under Section 609
         and shall fail to resign after written request therefor by the Company
         or the Guarantor or by any such Holder, or

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

then, in any such case, (i) the Company by a Board Resolution may remove the
Trustee with respect to all Securities, or (ii) subject to Section 514, any
Holder who has been a bona fide Holder of a Security for at least six months
may, on behalf of itself and all others similarly situated, petition any court
of competent jurisdiction for the removal of the Trustee with respect to all
Securities and the appointment of a successor Trustee or Trustees.

                  (e) If the Trustee shall resign, be removed or become
incapable of acting, or if a vacancy shall occur in the office of Trustee for
any cause, with respect to the Securities of one or more series, the Company, by
a Board Resolution, shall promptly appoint a successor Trustee or Trustees with
respect to the Securities of that or those series (it being understood that any
such successor Trustee may be appointed with respect to the Securities of one or
more or all of such series and that at any time there shall be only one Trustee
with respect to the Securities of any particular series) and shall comply with
the applicable requirements of Section 611. If, within one year after such
resignation, removal or incapability, or the occurrence of such vacancy, a
successor Trustee with respect to the Securities of any series shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Securities of such series delivered to the Company and the Guarantor
and the retiring Trustee, the successor Trustee so appointed shall, forthwith
upon its acceptance of such appointment in accordance with the applicable
requirements

                                      -65-
<PAGE>   74
of Section 611, become the successor Trustee with respect to the Securities of
such series and to that extent supersede the successor Trustee appointed by the
Company. If no successor Trustee with respect to the Securities of any series
shall have been so appointed by the Company or the Holders and accepted
appointment in the manner required by Section 611, any Holder who has been a
bona fide Holder of a Security of such series for at least six months may, on
behalf of itself and all others similarly situated, petition any court of
competent jurisdiction for the appointment of a successor Trustee with respect
to the Securities of such series.

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

Section 611.      Acceptance of Appointment by
                  Successor.

                  (a) In case of the appointment hereunder of a successor
Trustee with respect to all Securities, every such successor Trustee so
appointed shall execute, acknowledge and deliver to the Company, to the
Guarantor and to the retiring Trustee an instrument accepting such appointment,
and thereupon the resignation or removal of the retiring Trustee shall become
effective and such successor Trustee, without any further act, deed or
conveyance, shall become vested with all the rights, powers, trusts and duties
of the retiring Trustee; but, on the request of the Company, the Guarantor or
the successor Trustee, such retiring Trustee shall, upon payment of its charges,
execute and deliver an instrument transferring to such successor Trustee all the
rights, powers and trusts of the retiring Trustee and shall duly assign,
transfer and deliver to such successor Trustee all property and money held by
such retiring Trustee hereunder.

                  (b) In case of the appointment hereunder of a successor
Trustee with respect to the Securities of one or more (but not all) series, the
Company, the Guarantor, the retiring Trustee and each successor Trustee with
respect to the Securities of such series shall execute and deliver an indenture
supplemental hereto wherein each successor Trustee

                                      -66-
<PAGE>   75
shall accept such appointment and which (1) shall contain such provisions as
shall be necessary or desirable to transfer the rights, powers, trust and duties
of the retiring Trustee with respect to the Securities of that or those series
to which the appointment of such successor Trustee relates, (2) if the retiring
Trustee is not retiring with respect to all Securities, shall contain such
provisions as shall be deemed necessary or desirable to confirm that all the
rights, powers, trusts and duties of the retiring Trustee with respect to the
Securities of that or those series as to which the retiring Trustee is not
retiring shall continue to be vested in the retiring Trustee, and (3) shall add
to or change any of the provisions of this Indenture as shall be necessary to
provide for or facilitate the administration of the trusts hereunder by more
than one Trustee, it being understood that nothing herein or in such
supplemental indenture shall constitute such Trustee co-trustees of the same
trust and that each such Trustee shall be trustee of a trust or trusts hereunder
separate and apart from any trust or trusts hereunder administered by any other
such Trustee; and upon the execution and delivery of such supplemental indenture
the resignation or removal of the retiring Trustee shall become effective to the
extent provided therein and each such successor Trustee, without any further
act, deed or conveyance, shall become vested with all the rights, powers, trusts
and duties of the retiring Trustee with respect to the Securities of that or
those series to which the appointment of such successor Trustee relates; but, on
request of the Company and the Guarantor or any successor Trustee, such retiring
Trustee shall duly assign, transfer and deliver to such successor Trustee all
property and money held by such retiring Trustee hereunder with respect to the
Securities of that or those series to which the appointment of such successor
Trustee relates.

                  (c) Upon request of any such successor Trustee, the Company
and the Guarantor shall execute any and all instruments for more fully and
certainly vesting in and confirming to such successor Trustee all such rights,
powers and trusts referred to in paragraphs (a) and (b) of this Section, as the
case may be.

                  (d) No successor shall accept its appointment unless at the
time of such acceptance such successor Trustee shall be qualified and eligible
under this Article.


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Section 612.      Merger, Conversion, Consolidation or
                  Succession to Business.

                  Any corporation into which the Trustee may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Trustee shall be a
party, or any corporation succeeding to all or substantially all the corporate
trust business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on the
part of any of the parties hereto. In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may adopt
such authentication and deliver the Securities so authenticated with the same
effect as if such successor Trustee had itself authenticated such Securities.

Section 613.      Preferential Collection of Claims
                  Against Company or Guarantor.

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

Section 614.      Appointment of Authenticating Agent.

                  The Trustee may with the consent of the Company appoint an
Authenticating Agent or Agents with respect to one or more series of Securities
which shall be authorized to act on behalf of the Trustee to authenticate
Securities of such series issued upon original issue and upon exchange,
registration of transfer or partial redemption thereof or pursuant to Section
306, and Securities so authenticated shall be entitled to the benefits of this
Indenture and shall be valid and obligatory for all purposes as if authenticated
by the Trustee hereunder. Wherever reference is made in this Indenture to the
authentication and delivery of Securities by the Trustee or the Trustee's
certificate of authentication, such reference shall be deemed to include
authentication and delivery on behalf of the Trustee by an Authenticating Agent
and a certificate of authentication executed on behalf of the Trustee by an
Authenticating Agent. Each Authenticating Agent shall be acceptable to the


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<PAGE>   77
Company and shall at all times be a corporation organized and doing business
under the laws of the United States of America, any State thereof or the
District of Columbia, authorized under such laws to act as Authenticating Agent,
having a combined capital and surplus of not less than $50,000,000 and subject
to supervision or examination by Federal or State authority. If such
Authenticating Agent publishes reports of condition at least annually, pursuant
to law or to the requirements of said supervising or examining authority, then
for the purposes of this Section, the combined capital and surplus of such
Authenticating Agent shall be deemed to be its combined capital and surplus as
set forth in its most recent report of condition so published. If at any time an
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, such Authenticating Agent shall resign immediately
in the manner and with the effect specified in this Section.

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

                  An Authenticating Agent may resign at any time by giving
written notice thereof to the Trustee and to the Company. The Trustee or the
Company may at any time terminate the agency of an Authenticating Agent by
giving written notice thereof to such Authenticating Agent and to the Company or
the Trustee, as the case may be. Upon receiving such a notice of resignation or
upon such a termination, or in case at any time such Authenticating Agent shall
cease to be eligible in accordance with the provisions of this Section, the
Trustee may appoint a successor Authenticating Agent which shall be acceptable
to the Company and shall mail written notice of such appointment by first-class
mail, postage prepaid, to all Holders of Securities of the series with respect
to which such Authenticating Agent will serve, as their names and addresses
appear in the Security Register. Any successor Authenticating Agent upon
acceptance of its appointment hereunder shall become vested with all the rights,
powers and duties of its predecessor hereunder, with like effect as


                                      -69-
<PAGE>   78
if originally named as an Authenticating Agent. No successor Authenticating
Agent shall be appointed unless eligible under the provisions of this Section.

                  The Trustee agrees to pay to each Authenticating Agent from
time to time reasonable compensation for its services under this Section, and
the Trustee shall be entitled to be reimbursed for such payments, subject to the
provisions of Section 607.

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

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

                                                       ........................,
                                                                      As Trustee
                                                     
                                                       By......................,
                                                         As Authenticating Agent
                                                     
                                                       By......................
                                                              Authorized Officer
                                       

                                  ARTICLE SEVEN

Holders' Lists and Reports by Trustee, Company and Guarantor

Section 701.      Company and Guarantor to Furnish Trustee
                  Names and Addresses of Holders.

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

                  (a) semi-annually, not later than 10 days after each Regular
         Record Date in each year, a list for each series of Securities, in such
         form as the Trustee may reasonably require, of the names and addresses
         of the Holders of Securities of such series as of the preceding Regular
         Record Date, and

                  (b) at such other times as the Trustee may request in writing,
         within 30 days after the


                                      -70-
<PAGE>   79
         receipt by the Company or the Guarantor of any such request, a list of
         similar form and content as of a date not more than 15 days prior to
         the time such list is furnished;

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

Section 702.      Preservation of Information;
                  Communications to Holders.

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

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

                  (c) Every Holder of Securities, by receiving and holding the
same, agrees with the Company, the Guarantor and the Trustee that none of the
Company, the Guarantor, the Trustee or any agent of any of them shall be held
accountable by reason of any disclosure of information as to names and addresses
of Holders made pursuant to the Trust Indenture Act.

Section 703.      Reports by Trustee.

                  (a) The Trustee shall transmit to Holders such reports
concerning the Trustee and its actions under this Indenture as may be required
pursuant to the Trust Indenture Act at the times and in the manner provided
pursuant thereto. To the extent that any such report is required by the Trust
Indenture Act with respect to any 12 month period, such report shall cover the
12 month period ending July 15 and shall be transmitted by the next succeeding
September 15.
                  (b) A copy of each such report shall, at the time of such
transmission to Holders, be filed by the Trustee with each stock exchange upon
which any Securities are listed, with the Commission and with the Company and
the


                                      -71-
<PAGE>   80
Guarantor. The Company will notify the Trustee when any Securities are listed on
any stock exchange.

Section 704.      Reports by Company and Guarantor.

                  The Company and the Guarantor shall file with the Trustee and
the Commission, and transmit to Holders, such information, documents and other
reports, and such summaries thereof, as may be required pursuant to the Trust
Indenture Act at the times and in the manner provided pursuant to such Act;
provided that any such information, documents or reports required to be filed
with the Commission pursuant to Section 13 or 15(d) of the Exchange Act shall be
filed with the Trustee within 15 days after the same is so required to be filed
with the Commission.


                                  ARTICLE EIGHT

                    Consolidation, Merger, or Sale of Assets

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

                  Neither the Company nor the Guarantor shall consolidate with
or merge into any other Person or sell its properties and assets as, or
substantially as, an entirety to any Person, and neither the Company nor the
Guarantor shall permit any Person to consolidate with or merge into the Company
or the Guarantor, as the case may be, unless:

                  (1) in case the Company or the Guarantor, as the case may be,
         shall consolidate with or merge into another Person (including, without
         limitation, the Guarantor or the Company, as the case may be), or sell
         its properties and assets as, or substantially as, an entirety to any
         Person (including, without limitation, the Guarantor or the Company, as
         the case may be), the Person formed by such consolidation or into which
         the Company or the Guarantor, as the case may be, is merged or the
         Person which purchases the properties and assets of the Company or the
         Guarantor, as the case may be, as, or substantially, as an entirety
         shall be a corporation, partnership or trust, shall be organized and
         validly existing under the laws of the United States of America, any
         State thereof or the District of Columbia and shall


                                      -72-
<PAGE>   81
         expressly assume, by an indenture supplemental hereto, in the case of
         any such transaction involving the Company, the due and punctual
         payment of the principal of and any premium and interest on all the
         Securities and the performance or observance of every covenant of this
         Indenture on the part of the Company to be performed or observed, and,
         in the case of any such transaction involving the Guarantor, the due
         and punctual performance of the Guarantees and the performance or
         observance of every covenant of this Indenture on the part of the
         Guarantor to be performed or observed, in each case by supplemental
         indenture satisfactory in form to the Trustee, executed and delivered
         to the Trustee, by the Person (if other than the Company or the
         Guarantor, as the case may be) formed by such consolidation or into
         which the Company or the Guarantor, as the case may be, shall have been
         merged or by the corporation which shall have acquired the assets of
         the Company or the Guarantor, as the case may be;

                  (2) immediately after giving effect to such transaction, no
         Event of Default shall have happened and be continuing; and

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

Section 802.      Successor Substituted.

                  Upon any consolidation of the Company or the Guarantor, as the
case may be, with, or merger of the Company or the Guarantor, as the case may
be, into, any other Person or any sale of the properties and assets of the
Company or the Guarantor, as the case may be, as, or substantially as, an
entirety in accordance with Section 801, the successor Person formed by such
consolidation or


                                      -73-
<PAGE>   82
into which the Company or the Guarantor, as the case may be, is merged or to
which such sale is made shall succeed to, and be substituted for, and may
exercise every right and power of, the Company or the Guarantor, as the case may
be, under this Indenture with the same effect as if such successor Person had
been named as the Company or the Guarantor, as the case may be, herein, and
thereafter the predecessor Person shall be relieved of all obligations and
covenants under this Indenture and the Securities or the Guarantees, as the case
may be.

Section 803.      Assumption by Guarantor or Subsidiary of
                  Company's Obligations

                  The Guarantor or any Subsidiary of the Guarantor may, where
permitted by law, assume the obligations of the Company (or any Person which
shall have previously assumed the obligations of the Company) for the due and
punctual payment of the principal of (and any premium), interest on and any
other payments with respect to the Securities and the performance of every
covenant of this Indenture and the Securities on the part of the Company (or
such other Person) to be performed or observed, provided that:

                  (1) the Guarantor or such Subsidiary, as the case may be,
         shall expressly assume such obligations by an indenture supplemental
         hereto, in form reasonably satisfactory to the Trustee, executed and
         delivered to the Trustee and if such Subsidiary assumed such
         obligations, the Guarantor shall, by such supplemental indenture,
         confirm that its Guarantees shall apply to such Subsidiary's
         obligations under the Securities and this Indenture, as modified by
         such supplemental indenture;

                  (2) immediately after giving effect to such transaction, no
         Event of Default shall have occurred and be continuing;

                  (3) the Guarantor or such Subsidiary, as the case may be,
         shall have delivered to the Trustee an Officers' Certificate and an
         Opinion of Counsel, each stating that such assumption and such
         supplemental indenture comply with this Article and that all conditions
         precedent herein provided for relating to such transaction have been
         complied with;

                  (4) such assumption shall not result in adverse tax
         consequences to any Holder; and


                                      -74-
<PAGE>   83
                  (5) the Guarantor and/or such Subsidiary shall have delivered
to the Trustee an Opinion of Counsel to the effect that (1) the Securities are
legal, valid and binding obligations of the assuming corporation enforceable
against the assuming corporation in accordance with their terms subject to (a)
bankruptcy, insolvency, reorganization, fraudulent transfer, moratorium and
other similar laws now or hereafter in effect relating to or affecting creditors
rights generally and the rights of creditors of insurance companies generally
and (b) general principles of equity (regardless of whether considered in a
proceeding at law or in equity) and (2) if a Subsidiary of the Guarantor is the
assuming corporation, the Guarantees continue to be the legal, valid and binding
obligations of the Guarantor enforceable against the Guarantor in accordance
with their terms subject to (a) bankruptcy, insolvency, reorganization,
fraudulent transfer, moratorium and other similar laws now or hereafter in
effect relating to or affecting creditors rights generally and the rights of
creditors of insurance companies generally and (b) general principles of equity
(regardless of whether considered in a proceeding at law or in equity).

                  Upon any such assumption, the Guarantor or such Subsidiary
shall succeed to, and be substituted for, and may exercise every right and power
of, the Company under this Indenture with the same effect as if the Guarantor or
such Subsidiary, as the case may be, had been named as the "Company" herein, and
the Person named as the "Company" in the first paragraph of this instrument or
any successor Person which shall theretofore have become such in the manner
prescribed in this Article shall be released from its liability as obligor upon
the Securities.


                                  ARTICLE NINE

                             Supplemental Indentures

Section 901.      Supplemental Indentures Without
                  Consent of Holders.

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


                                      -75-
<PAGE>   84
                  (1) to evidence the succession of another Person to the
         Company or the Guarantor and the assumption by any such successor of
         the covenants of the Company or the Guarantor herein and in the
         Securities or Guarantees; or

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

                  (3)  to add any additional Events of
         Default; or

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

                  (5) to add to, change or eliminate any of the provisions of
         this Indenture in respect of one or more series of Securities,
         including, without limitation, with respect to any of the provisions in
         Article Fourteen, provided that any such addition, change or
         elimination (i) shall neither (A) apply to any Security of any series
         created prior to the execution of such supplemental indenture and
         entitled to the benefit of such provision nor (B) modify the rights of
         the Holder of any such Security with respect to such provision or (ii)
         shall become effective only when there is no such Security Outstanding;
         or

                  (6) to secure the Securities pursuant to the requirements of
         Section 1005, or to

                                      -76-
<PAGE>   85
         otherwise secure the Securities of any series or the Guarantees; or

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

                  (8) to evidence and provide for the acceptance of appointment
         hereunder by a successor Trustee with respect to the Securities of one
         or more series and to add to or change any of the provisions of this
         Indenture as shall be necessary to provide for or facilitate the
         administration of the trusts hereunder by more than one Trustee,
         pursuant to the requirements of Section 611(b); or

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

                  (10) to conform to any mandatory provisions of law.

Section 902.      Supplemental Indentures with Consent
                  of Holders.

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

                                      -77-
<PAGE>   86
                  (1) change the Stated Maturity of the principal of, or any
         installment of principal of or interest on, any Security, or reduce the
         principal amount thereof or the rate of interest thereon (including any
         change in the Floating or Adjustable Rate Provision pursuant to which
         such rate is determined that would reduce such rate for any period) or
         any premium payable upon the redemption thereof, or reduce the amount
         of the principal of an Original Issue Discount Security that would be
         due and payable upon a declaration of acceleration of the Maturity
         thereof pursuant to Section 502, or change any Place of Payment where,
         or the coin or currency in which, any Security or any premium or
         interest thereon is payable, or impair the right to institute suit for
         the enforcement of any such payment on or after the Stated Maturity
         thereof (or, in the case of redemption, on or after the Redemption
         Date), or

                  (2) reduce the percentage in principal amount of the
         Outstanding Securities of any series, the consent of whose Holders is
         required for any such supplemental indenture, or the consent of whose
         Holders is required for any waiver (of compliance with certain
         provisions of this Indenture or certain defaults hereunder and their
         consequences) provided for in this Indenture, or

                  (3) modify any of the provisions of this Section, Section 513
         or Section 907, except to increase any such percentage or to provide
         that certain other provisions of this Indenture cannot be modified or
         waived without the consent of the Holder of each Outstanding Security
         affected thereby, provided, however, that this clause shall not be
         deemed to require the consent of any Holder with respect to changes in
         the references to "the Trustee" and concomitant changes in this Section
         and Section 907, or the deletion of this proviso, in accordance with
         the requirements of Sections 611(b) and 901(8), or


                                      -78-
<PAGE>   87
                  (4) modify or affect in any manner adverse to the interests of
         the Holders of any Securities the terms and conditions of the
         obligations of the Guarantor in respect of the due and punctual payment
         of the principal thereof, premium, if any, and interest, if any,
         thereon or any sinking fund payments provided in respect thereof.

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular series of Securities, or which modifies the
rights of the Holders of Securities of such series with respect to such covenant
or other provision, shall be deemed not to affect the rights under this
Indenture of the Holders of Securities of any other series.

                  It shall not be necessary for any Act of Holders under this
Section to approve the particular form of any proposed supplemental indenture,
but it shall be sufficient if such Act shall approve the substance thereof.

Section 903.      Execution of Supplemental Indentures.

                  In executing, or accepting the additional trusts created by,
any supplemental indenture permitted by this Article or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be entitled
to receive, and (subject to Section 601) shall be fully protected in relying
upon, an Opinion of Counsel stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture. The Trustee may, but
shall not be obligated to, enter into any such supplemental indenture which
affects the Trustee's own rights, duties or immunities under this Indenture or
otherwise.

Section 904.      Effect of Supplemental Indentures.

                  Upon the execution of any supplemental indenture under this
Article, this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes; and
every Holder of Securities theretofore or thereafter authenticated and delivered
hereunder shall be bound thereby.


                                      -79-




<PAGE>   88
Section 905.  Conformity with Trust Indenture Act.

                  Every supplemental indenture executed pursuant to this Article
shall conform to the requirements of the Trust Indenture Act.

Section 906.  Reference in Securities to
              Supplemental Indentures.

                  Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture. If the Company and
the Guarantor shall so determine, new Securities of any series so modified as to
conform, in the opinion of the Trustee, the Company and the Guarantor, to any
such supplemental indenture may be prepared and executed by the Company, the
Guarantees endorsed thereon may be executed by the Guarantor and such Securities
may be authenticated and delivered by the Trustee in exchange for Outstanding
Securities of such series.

Section 907.  Waiver of Compliance by Holders.

                  Anything in this Indenture to the contrary notwithstanding,
any of the acts which the Company or the Guarantor is required to do, or is
prohibited from doing, by any of the provisions of this Indenture may, to the
extent that such provisions might be changed or eliminated by a supplemental
indenture pursuant to Section 902 upon consent of holders of not less than a
majority in aggregate principal amount of the then Outstanding Securities of the
series affected, be omitted or done by the Company or the Guarantor, as the case
may be, if there is obtained the prior consent or waiver of the holders of at
least a majority in aggregate principal amount of the then Outstanding
Securities of such series.

                                   ARTICLE TEN

                                    Covenants

Section 1001. Payment of Principal, Premium and Interest.

                  The Company covenants and agrees for the benefit of each
series of Securities that it will duly and punctually pay or cause to be paid
the principal of and any premium and interest on the Securities of that series
in

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<PAGE>   89
accordance with the terms of the Securities and this Indenture.

Section 1002. Maintenance of Office or Agency by Company
              and Guarantor.

                  (a) So long as any Securities are Outstanding, the Company
will maintain in each Place of Payment for any series of Securities an office or
agency where Securities of that series may be presented or surrendered for
payment, where Securities of that series may be surrendered for registration of
transfer or exchange, and where notices and demands to or upon the Company in
respect of the Securities of that series and this Indenture may be served. The
Company will give prompt written notice to the Trustee of the location, and any
change in the location, of such office or agency. If at any time the Company
shall fail to maintain any such required office or agency or shall fail to
furnish the Trustee with the address thereof, such presentations, surrenders,
notices and demands may be made or served at the Corporate Trust Office of the
Trustee, and the Company hereby appoints the Trustee as its agent to receive all
such presentations, surrenders, notices and demands.

                  The Company may also from time to time designate one or more
other offices or agencies where the Securities of one or more series may be
presented or surrendered for any or all such purposes and may from time to time
rescind such designations; provided, however, that no such designation or
rescission shall in any manner relieve the Company of its obligation to maintain
an office or agency in each Place of Payment for Securities of any series for
such purposes. The Company will give prompt written notice to the Trustee of any
such designation or rescission and of any change in the location of any such
other office or agency.

                  (b) So long as any Securities are Outstanding, the Guarantor
will maintain in each Place of Payment for any series of Securities an office or
agency where Securities of that series may be presented or surrendered for
payment under the Guarantees endorsed thereon and where notices and demands to
or upon the Guarantor in respect of the Guarantees endorsed on the Securities of
that series and this Indenture may be served. The Guarantor will give prompt
written notice to the Trustee of the location, and any change in the location,
of such office or agency. If at any time the Guarantor shall fail to maintain
any such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee, and the Guarantor

                                      -81-
<PAGE>   90
hereby appoints the Trustee as its agent to receive all such presentations,
surrenders, notices and demands.

                  The Guarantor may also from time to time designate one or more
other offices or agencies where the Securities of one or more series may be
presented or surrendered for such purpose or where such notices or demands may
be served and may from time to time rescind such designations; provided,
however, that no such designation or rescission shall in any manner relieve the
Guarantor of its obligation to maintain an office or agency in each Place of
Payment for Securities of any series for such purposes. The Guarantor will give
prompt written notice to the Trustee of any such designation or rescission and
of any change in the location of any such other office or agency.

Section 1003. Money for Securities Payments to
              Be Held in Trust.

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

                  Whenever the Company shall have one or more Paying Agents for
any series of Securities, it will, prior to each due date of the principal of or
any premium or interest on any Securities of that series, deposit with a Paying
Agent a sum sufficient to pay such amount, such sum to be held as provided by
the Trust Indenture Act, and (unless such Paying Agent is the Trustee) the
Company will promptly notify the Trustee of its action or failure so to act.

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

                                      -82-
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the Trustee all sums held in trust by such Paying Agent for payment in respect
of the Securities of that series.

                  The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which such sums were held by the Company or
such Paying Agent; and, upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such money.

                  Any money deposited with the Trustee or any Paying Agent, or
then held by the Company or the Guarantor, in trust for the payment of the
principal of or any premium or interest on any Security of any series and
remaining unclaimed for two years after such principal, premium or interest has
become due and payable shall be paid to the Company or the Guarantor, as the
case may be, on Company Request, or (if then held by the Company or the
Guarantor) shall be discharged from such trust; and the Holder of such Security
shall thereafter, as an unsecured general creditor, look only to the Company or
the Guarantor for payment thereof, and all liability of the Trustee or such
Paying Agent with respect to such trust money, and all liability of the Company
or the Guarantor as trustee thereof, shall thereupon cease; provided, however,
that the Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in a
newspaper published in the English language, customarily published on each
Business Day and of general circulation in the Borough of Manhattan, the City of
New York, notice that such money remains unclaimed and that, after a date
specified therein, which shall not be less than 30 days from the date of such
publication, any unclaimed balance of such money then remaining will be repaid
to the Company or the Guarantor, as the case may be.

Section 1004. Statement by Officers as to Default.

                  The Company and the Guarantor will each deliver to the Trustee
within 120 days after the end of each fiscal year of the Guarantor ending after
the date hereof, a certificate signed by the Company's or the Guarantor's, as
the case may be, principal executive officer, principal financial officer or
principal accounting officer stating whether or not to the best knowledge of the
signer thereof the Company or the Guarantor, as the case may be, is in
compliance with all terms, conditions and covenants of this Indenture (without
regard to any period of grace or

                                      -83-
<PAGE>   92
requirement of notice provided hereunder) and if the signer has obtained
knowledge of any continuing default by the Company or the Guarantor in the
performance, observation or fulfillment of any such term, condition or covenant,
specifying each such default and the nature thereof.

Section 1005. Limitations on Liens on Common Stock of Principal Subsidiaries.

                  As long as any of the Securities remains outstanding, the
Guarantor will not, and will not permit any Principal Subsidiary to, issue,
assume, incur or guarantee any indebtedness for borrowed money secured by a
mortgage, pledge, lien or other encumbrance, directly or indirectly, on any of
the Common Stock of a Principal Subsidiary, which Common Stock is owned by the
Guarantor, by the Company or by any Principal Subsidiary, unless the obligations
of the Company under the Securities and, if the Company or the Guarantor so
elects, any other indebtedness of the Company or the Guarantor ranking on a
parity with or prior to the Securities or the Guarantor's obligations under the
Guarantees, as the case may be, shall be secured equally and ratably with, or
prior to, such secured indebtedness for borrowed money so long as it is
outstanding and is so secured.

                                 ARTICLE ELEVEN

                            Redemption of Securities

Section 1101. Applicability of Article.

                  Securities of any series which are redeemable before their
Stated Maturity shall be redeemable in accordance with their terms and (except
as otherwise specified as contemplated by Section 301 for Securities of any
series) in accordance with this Article.

Section 1102. Election to Redeem; Notice to Trustee.

                  In case of any redemption at the election of the Company of
less than all the Securities of any series, the Company shall, at least 60 days
prior to the Redemption Date fixed by the Company (unless a shorter notice shall
be satisfactory to the Trustee), notify the Trustee of such Redemption Date, of
the principal amount of Securities of such series to be redeemed and, if
applicable, of the tenor of the Securities to be redeemed. In the case of any
redemption of Securities prior to the expiration of any restriction on such
redemption provided in the terms of such Securities or elsewhere in this
Indenture, the Company shall

                                      -84-
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furnish the Trustee with an Officers' Certificate evidencing compliance with
such restriction.

Section 1103. Selection by Trustee of Securities to Be Redeemed.

                  If less than all the Securities of any series are to be
redeemed (unless all of the Securities of such series and of a specified tenor
are to be redeemed), the particular Securities to be redeemed shall be selected
not more than 45 days prior to the Redemption Date by the Trustee, from the
Outstanding Securities of such series not previously called for redemption, by
such method as the Trustee shall deem fair and appropriate and which may provide
for the selection for redemption of portions (equal to the minimum authorized
denomination for Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that series. If less than
all of the Securities of such series and of a specified tenor are to be
redeemed, the particular Securities to be redeemed shall be selected not more
than 45 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series and specified tenor not previously called for
redemption in accordance with the preceding sentence.

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

                  For all purposes of this Indenture, unless the context
otherwise requires, all provisions relating to the redemption of Securities
shall relate, in the case of any Securities redeemed or to be redeemed only in
part, to the portion of the principal amount of such Securities which has been
or is to be redeemed.

Section 1104.  Notice of Redemption.

                  Notice of redemption shall be given by first-class mail,
postage prepaid, mailed not less than 30 nor more than 60 days prior to the
Redemption Date, to each Holder of Securities to be redeemed, at its address
appearing in the Security Register.

                  All notices of redemption shall state:

                  (1)  the Redemption Date,

                  (2)  the Redemption Price,

                                      -85-
<PAGE>   94
                  (3) if less than all the Outstanding Securities of any series
         are to be redeemed, the identification (and, in the case of partial
         redemption of any Securities, the principal amounts) of the particular
         Securities to be redeemed,

                  (4) that on the Redemption Date the Redemption Price will
         become due and payable upon each such Security to be redeemed and, if
         applicable, that interest thereon will cease to accrue on and after
         said date,

                  (5) the place or places where such Securities are to be
         surrendered for payment of the Redemption Price, and

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

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

Section 1105.  Deposit of Redemption Price.

                  Prior to any Redemption Date, the Company shall deposit with
the Trustee or with a Paying Agent (or, if the Company is acting as its own
Paying Agent, segregate and hold in trust as provided in Section 1003) an amount
of money sufficient to pay the Redemption Price of, and (except if the
Redemption Date shall be an Interest Payment Date) accrued interest on, all the
Securities which are to be redeemed on that date.

Section 1106.  Securities Payable on Redemption Date.

                  Notice of redemption having been given as aforesaid, the
Securities so to be redeemed shall, on the Redemption Date, become due and
payable at the Redemption Price therein specified, and from and after such date
(unless the Company shall default in the payment of the Redemption Price and
accrued interest) such Securities shall cease to bear interest. Upon surrender
of any such Security for redemption in accordance with said notice, such
Security shall be paid by the Company at the Redemption Price, together with
accrued interest to the Redemption Date; provided, however, that, unless
otherwise specified as contemplated by Section 301, installments of interest
whose Stated Maturity is on or prior to the Redemption Date shall be payable to
the Holders of such Securities, or one or more

                                      -86-
<PAGE>   95
Predecessor Securities, registered as such at the close of business on the
relevant Record Dates according to their terms and the provisions of Section
307.

                  If any Security called for redemption shall not be so paid
upon surrender thereof for redemption, the principal and any premium shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Security.

Section 1107. Securities Redeemed in Part.

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

                                 ARTICLE TWELVE

                       Defeasance and Covenant Defeasance

Section 1201. Company's Option to Effect Defeasance or Covenant Defeasance.

                  The Company may elect, at any time, to have either Section
1202 or Section 1203 applied to the Outstanding Securities of any series and the
Guarantees endorsed thereon, upon compliance with the conditions set forth below
in this Article Twelve.

Section 1202. Defeasance and Discharge.

                  Upon the Company's exercise of the option provided in Section
1201 to have this Section 1202 applied to the Outstanding Securities of any
series and the Guarantees endorsed thereon, the Company and the Guarantor shall
each be deemed to have been discharged from its obligations with respect to the
Outstanding Securities of such series and the Guarantees endorsed thereon as
provided in this Section on and after the date the conditions set forth in
Section 1204 are satisfied (hereinafter called "Defeasance"). For this purpose,
such Defeasance means that the Company and the

                                      -87-
<PAGE>   96
Guarantor shall be deemed to have paid and discharged the entire indebtedness
represented by the Outstanding Securities of such series and the Guarantees
endorsed thereon and to have satisfied all their other obligations under the
Securities of such series, the Guarantees endorsed thereon and this Indenture
insofar as the Securities of such series and the Guarantees endorsed thereon are
concerned (and the Trustee, at the expense of the Company, shall execute proper
instruments acknowledging the same), subject to the following which shall
survive until otherwise terminated or discharged hereunder: (1) the rights of
Holders of Securities of such series to receive, solely from the trust fund
described in Section 1204 and as more fully set forth in such Section, payments
in respect of the principal of and any premium and interest on such Securities
of such series when payments are due, (2) the Company's or the Guarantor's
obligations, as the case may be, with respect to the Securities of such series
under Sections 304, 305, 306, 1002 and 1003, (3) the rights, powers, trusts,
duties and immunities of the Trustee hereunder, including, without limitation,
its rights under Section 607 and (4) this Article Twelve. Subject to compliance
with this Article Twelve, the Company may exercise its option provided in
Section 1201 to have this Section 1202 applied to the Outstanding Securities of
any series and the Guarantees endorsed thereon notwithstanding the prior
exercise of its option provided in Section 1201 to have Section 1203 applied to
the Outstanding Securities of such series and the Guarantees endorsed thereon.

Section 1203. Covenant Defeasance.

                  Upon the Company's exercise of the option provided in Section
1201 to have this Section 1203 applied to the Outstanding Securities of any
series and the Guarantees endorsed thereon, (1) the Guarantor shall be released
from its obligations under Section 1005 and the Company and the Guarantor shall
be released from their obligations under Section 801 and (2) the occurrence of
any event specified in Sections 501(3), 501(4) (with respect to Section 1005 and
Section 801) and 501(5) shall be deemed not to be or result in an Event of
Default, in each case with respect to the Outstanding Securities of such series
as provided in this Section on and after the date the conditions set forth in
Section 1204 are satisfied (hereinafter called "Covenant Defeasance"). For this
purpose, such Covenant Defeasance means that the Company and the Guarantor may
omit to comply with and shall have no liability in respect of any term,
condition or limitation set forth in any such specified Section (to the extent
so specified in the case of Section 501(4)), whether directly or indirectly by
reason of any reference elsewhere herein to any such Section or by reason

                                      -88-
<PAGE>   97
of any reference in any such Section to any other provision herein or in any
other document, but the remainder of this Indenture and the Securities of such
series shall be unaffected thereby.

Section 1204. Conditions to Defeasance or Covenant Defeasance.

                  The following shall be the conditions to application of either
Section 1202 or Section 1203 to the Outstanding Securities of any series:

                  (1) The Company or the Guarantor shall irrevocably have
         deposited or caused to be deposited with the Trustee (or another
         trustee that satisfies the requirements contemplated by Section 609 and
         agrees to comply with the provisions of this Article Twelve applicable
         to it) as trust funds in trust for the purpose of making the following
         payments, specifically pledged as security for, and dedicated solely
         to, the benefit of the Holders of Outstanding Securities of such
         series, (A) in the case of Securities of such series denominated in
         U.S. dollars, (i) money in an amount, or (ii) U.S. Government
         Obligations that through the scheduled payment of principal and
         interest in respect thereof in accordance with their terms will
         provide, not later than one day before the due date of any payment,
         money in an amount, or (iii) a combination thereof, in each case
         sufficient, in the opinion of a nationally recognized firm of
         independent public accountants expressed in a written certification
         thereof delivered to the Trustee, to pay and discharge, and which shall
         be applied by the Trustee (or any such other qualifying trustee) to pay
         and discharge, the principal of and any premium and interest on the
         Securities of such series on the respective Stated Maturities, in
         accordance with the terms of this Indenture and the Securities of such
         series or (B) in the case of Securities of such series denominated in a
         currency other than the U.S. dollar, (i) money in such currency in an
         amount, or (ii) Foreign Government Obligations that through the
         scheduled payment of principal and interest in respect thereof in
         accordance with their terms will provide, not later than one day before
         the due date of any payment, money in such currency in an amount, or
         (iii) a combination thereof, in each case sufficient, in the opinion of
         a nationally recognized firm of independent public accountants
         expressed in a written certification thereof delivered to the Trustee,
         to pay and discharge, and which shall be applied by the Trustee (or any
         such other qualifying trustee) to pay and discharge, the principal of
         and any

                                      -89-
<PAGE>   98
         premium and interest on the Securities of such series on the respective
         Stated Maturities, in accordance with the terms of this Indenture and
         the Securities of such series. As used herein, (1) "U.S. Government
         Obligation" means (x) any security that is (i) a direct obligation of
         the United States of America for the payment of which full faith and
         credit of the United States of America is pledged or (ii) an obligation
         of a Person controlled or supervised by and acting as an agency or
         instrumentality for the United States of America the payment of which
         is unconditionally guaranteed as a full faith and credit obligation by
         the United States of America, which, in either case (i) or (ii), is not
         callable or redeemable at the option of the issuer thereof, and (y) any
         depositary receipt issued by a bank (as defined in Section 3(a)(2) of
         the Securities Act of 1933, as amended) as custodian with respect to
         any specific payment of principal of or interest on any such U.S.
         Government Obligation specified in Clause (x) and held by such
         custodian for the account of the holder of such depositary receipt, or
         with respect to any specific payment of principal of or interest on any
         such U.S. Government Obligation, provided that (except as required by
         law) such custodian is not authorized to make any deduction from the
         amount payable to the Holder of such depositary receipt from any amount
         received by the custodian in respect of the U.S. Government Obligation
         or the specific payment of principal or interest evidenced by such
         depositary receipt and (2) "Foreign Government Obligation" means (x)
         any security that is (i) a direct obligation of the government that
         issued such currency for the payment of which full faith and credit of
         such government is pledged or (ii) an obligation of a Person controlled
         or supervised by and acting as an agency or instrumentality for such
         government the payment of which is unconditionally guaranteed as a full
         faith and credit obligation by such government, which, in either case
         (i) or (ii), is not callable or redeemable at the option of the issuer
         thereof, and (y) any depositary receipt issued by a bank (as defined in
         Section 3(a)(2) of the Securities Act of 1933, as amended) as custodian
         with respect to any specific payment of principal of or interest on any
         such Foreign Government Obligation specified in Clause (x) and held by
         such custodian for the account of the holder of such depositary
         receipt, or with respect to any specific payment of principal of or
         interest on any such Foreign Government Obligation, provided that
         (except as required by law) such custodian is not authorized to make
         any deduction from the amount payable to the Holder of such depositary
         receipt from any amount received by the custodian in

                                      -90-
<PAGE>   99
         respect of the Foreign Government Obligation or the specific payment of
         principal or interest evidenced by such depositary receipt.

                  (2) In the case of an election under Section 1202, the Company
         shall have delivered to the Trustee an Opinion of Counsel stating that
         the Holders of the Outstanding Securities of such series will not
         recognize gain or loss for Federal income tax purposes as a result of
         the deposit, Defeasance and discharge to be effected with respect to
         the Securities of such series and will be subject to Federal income tax
         on the same amount, in the same manner and at the same times as would
         be the case if such deposit, Defeasance and discharge were not to
         occur.

                  (3) In the case of an election under Section 1203, the Company
         shall have delivered to the Trustee an Opinion of Counsel to the effect
         that the Holder of the Outstanding Securities of such series will not
         recognize gain or loss for Federal income tax purposes as result of the
         deposit and Covenant Defeasance to be effected with respect to the
         Securities of such series and will be subject to Federal income tax on
         the same amount, in the same manner and at the same times as would be
         the case if such deposit and Covenant Defeasance were not to occur.

                  (4) The Company shall have delivered to the Trustee an
         Officers' Certificate to the effect that the Securities of such series,
         if then listed on any securities exchange, will not be delisted as a
         result of such deposit.

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

                  (6) The Company shall have delivered to the Trustee an
         Officer's Certificate and an Opinion of Counsel, each stating that all
         conditions precedent with respect to such Defeasance or Covenant
         Defeasance have been complied with.

                  (7)      Such Defeasance or Covenant Defeasance shall
         not result in the trust arising from such deposit

                                      -91-
<PAGE>   100
         constituting an investment company within the meaning of the Investment
         Company Act of 1940, as amended, unless such trust shall be qualified
         under such Act or exempt from regulation thereunder.

Section 1205. Deposited Money and U.S. Government Obligations or Foreign
              Government Obligations to be Held In Trust; Other Miscellaneous
              Provisions.

                  Subject to the provisions of the last paragraph of Section
1003, all money and U.S. Government Obligations or Foreign Government
Obligations (including the proceeds thereof) deposited with the Trustee or other
qualifying trustee (solely for purposes of this Section and Section 1206, the
Trustee and any such other trustee are referred to collectively as the
"Trustee") pursuant to Section 1204 in respect of the Securities of any series
shall be held in trust and applied by the Trustee, in accordance with the
provisions of the Securities of such series and this Indenture, to the payment,
either directly or through any such Paying Agent (including the Company or the
Guarantor acting as its own Paying Agent) as the Trustee may determine, to the
Holders of Securities of such series, of all sums due and to become due thereon
in respect of principal and any premium and interest, but money so held in trust
need not be segregated from other funds except to the extent required by law.

                  The Company shall pay and indemnify the Trustee against any
tax, fee or other charge imposed on or assessed against the U.S. Government
Obligations or Foreign Government Obligations deposited pursuant to Section 1204
or the principal and interest received in respect thereof other than any such
tax, fee or other charge that by law is for the account of the Holders of
Outstanding Securities.

                  Anything in this Article Twelve to the contrary
notwithstanding, the Trustee shall deliver or pay to the Company or the
Guarantor, as the case may be, from time to time upon Company Request any money
or U.S. Government Obligations or Foreign Government Obligations held by it as
provided in Section 1204 with respect to Securities of any series that, in the
opinion of a nationally recognized firm of independent public accountants
expressed in a written certification thereof delivered to the Trustee, are in
excess of the amount thereof that would then be required to be deposited to
effect an equivalent Defeasance or Covenant Defeasance with respect to the
Securities of such series and the Guarantees endorsed thereon.

Section 1206. Reinstatement.

                                      -92-
<PAGE>   101
                  If the Trustee or the Paying Agent is unable to apply any
money in accordance with this Article Twelve with respect to the Securities of
any series by reason of any order or judgment of any court or governmental
authority enjoining, restraining or otherwise prohibiting such application, then
the Company's and the Guarantor's obligations under this Indenture and the
Securities of such series and the Guarantees endorsed thereon shall be revived
and reinstated as though no deposit had occurred pursuant to this Article Twelve
with respect to Securities of such series until such time as the Trustee or
Paying Agent is permitted to apply all money held in trust pursuant to Section
1205 with respect to Securities of such series in accordance with this Article
Twelve; provided, however, that if the Company makes any payment of principal of
or any premium or interest on any Security of such series following the
reinstatement of its obligations or if the Guarantor makes any payment in
respect thereof pursuant to its Guarantee of such Securities of such series, the
Company or the Guarantor, as the case may be, shall be subrogated to the rights
of the Holders of Securities of such series to receive such payment from the
money so held in trust.

                                ARTICLE THIRTEEN

                                  Sinking Funds

Section 1301. Applicability of Article.

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

                  The minimum amount of any sinking fund payment provided for by
the terms of Securities of any series is herein referred to as a "mandatory
sinking fund payment", and any payment in excess of such minimum amount provided
for by the terms of Securities of any series is herein referred to as an
"optional sinking fund payment". If provided for by the terms of Securities of
any series, the cash amount of any sinking fund payment may be subject to
reduction as provided in Section 1302. Each sinking fund payment shall be
applied to the redemption of Securities of any series as provided for by the
terms of Securities of such series.

                                      -93-
<PAGE>   102
Section 1302. Satisfaction of Sinking Fund Payments with Securities.

                  The Company (1) may deliver Outstanding Securities of a series
(other than any previously called for redemption) and (2) may apply as a credit
Securities of a series which have been acquired or redeemed either at the
election of the Company pursuant to the terms of such Securities or through the
application of permitted optional sinking fund payments pursuant to the terms of
such Securities or otherwise, in each case in satisfaction of all or any part of
any sinking fund payment with respect to the Securities of such series required
to be made pursuant to the terms of such Securities as provided for by the terms
of such series; provided that such Securities have not been previously so
credited. Such Securities shall be received and credited for such purpose by the
Trustee at the Redemption Price specified in such Securities for redemption
through operation of the sinking fund and the amount of such sinking fund
payment shall be reduced accordingly.

Section 1303. Redemption of Securities for Sinking Fund.

                  Not less than 45 days prior to each sinking fund payment date
for any series of Securities, the Company will deliver to the Trustee an
Officers' Certificate specifying the amount of the next ensuing sinking fund
payment for that series pursuant to the terms of that series, the portion
thereof, if any, which is to be satisfied by payment of cash and the portion
thereof, if any, which is to be satisfied by delivering and crediting Securities
of that series pursuant to Section 1302 and will also deliver to the Trustee any
Securities to be so delivered. Not less than 15 nor more than 45 days before
each such sinking fund payment date the Trustee shall select the Securities to
be redeemed upon such sinking fund payment date in the manner specified in
Section 1103 and cause notice of the redemption thereof to be given in the name
of and at the expense of the Company in the manner provided in Section 1104.
Such notice having been duly given, the redemption of such Securities shall be
made upon the terms and in the manner stated in Sections 1106 and 1107.

                                ARTICLE FOURTEEN

                             Guarantee of Securities

SECTION 1401. Guarantee.

                                      -94-
<PAGE>   103
                  The Guarantor hereby unconditionally guarantees to each Holder
of a Security of each series of the Company authenticated and delivered by the
Trustee or an Authenticating Agent the due and punctual payment of the principal
of (premium, if any) and interest on such Security and the due and punctual
payment of any sinking fund payments provided for pursuant to the terms of such
Security, when and as the same shall become due and payable, whether at Stated
Maturity, by declaration of acceleration, call for redemption or otherwise
according to the terms of such Security and of this Indenture (the "Guaranteed
Obligations"). In case of default by the Company in the payment of any such
principal, premium, interest or sinking fund payment, the Guarantor agrees duly
and punctually to make any such payment when and as the same shall become due
and payable, whether at the Stated Maturity, by declaration of acceleration,
call for redemption or otherwise, and as if such payment were made by the
Company. The Guarantor hereby agrees that its obligations hereunder shall be as
if it were principal debtor and not merely surety, and shall be absolute and
unconditional irrespective of, and shall be unaffected by, the validity,
legality or enforceability of any Security of any series or this Indenture, the
absence of any action to enforce the same or any waiver, modification or
indulgence or consent granted to the Company with respect thereto by the Holder
of any Security of any series or the Trustee, the recovery of any judgment
against the Company or any action to enforce the same, or any other
circumstances which may otherwise constitute a legal or equitable discharge of a
surety or guarantor; provided, however, that notwithstanding the foregoing, no
such waiver, modification or indulgence shall, without the consent of the
Guarantor, increase the principal amount of a Security or the interest rate
thereon or increase any premium payable upon redemption thereof. The Guarantor
hereby waives diligence, presentment, demand of payment, filing of claims with a
court in the event of merger or bankruptcy of the Company, any right of set-off
or counterclaim, any right to require a proceeding first against the Company,
protect or notice with respect to any Security or the indebtedness evidenced
thereby or with respect to any sinking fund payment required pursuant to the
terms of a Security issued under this Indenture and all demands whatsoever, and
covenants that this Guarantee will not be discharged as to any Security except
by payment in full of the principal of (premium, if any) and interest on such
Security.

SECTION 1402. Subrogation.

                  The Guarantor shall be subrogated to all rights of the Holder
of a Security against the Company in respect of

                                      -95-
<PAGE>   104
any amounts paid to such Holder by the Guarantor pursuant to the provisions of
this Guarantee; provided, however, that the Guarantor shall not, without the
consent of all Holders of Securities of such series, be entitled to enforce, or
to receive, any payments arising out of or based upon, such right of subrogation
until the principal of (and premium, if any) and interest then due and payable
on all Securities of the relevant series shall have been irrevocably paid in
full in accordance with the terms of such Securities.

SECTION 1403. Reinstatement.

                  The Guarantee of the Guarantor is a guarantee of payment when
due and not of collection. The Guarantee shall continue to be effective, or be
reinstated, as the case may be, in respect of any Security if at any time
payment, or any part thereof, of such Security is rescinded or must otherwise be
restored or returned by the Holder of such Security or any trustee for said
Holder upon the insolvency, bankruptcy, dissolution, liquidation or
reorganization of the Company or any other entity, or upon or as a result of the
appointment of a receiver, intervenor or conservator of, or trustee or similar
officer for, the Company or any other entity or any substantial part of their
respective property, or otherwise, all as though such payments had not been
made.

SECTION 1404. Execution and Delivery of Guarantees.

                  To evidence its guarantee set forth in Section 1401, the
Guarantor hereby agrees to execute, subject to Section 201, the Guarantee in a
form established pursuant to Section 206, to be endorsed on each Security
authenticated and delivered by the Trustee. Each such Guarantee shall be
executed by the Guarantor as provided in Section 303.

                  The delivery of any Security by the Trustee, after the
authentication thereof hereunder, shall constitute due delivery of the Guarantee
endorsed thereon on behalf of the Guarantor.

                                     * * * *

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

                                      -96-
<PAGE>   105
                  IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed, and their respective corporate seals to be
hereunto affixed and attested, all as of the day and year first above written.

                                      AETNA LIFE AND CASUALTY COMPANY

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

[Seal]

Attest:

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

                                       AETNA INC.

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

[Seal]

Attest:

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

                                       STATE STREET BANK AND TRUST
                                       COMPANY OF CONNECTICUT,
                                       NATIONAL ASSOCIATION

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

[Seal]

Attest:

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

                                      -97-
<PAGE>   106
STATE OF CONNECTICUT )
                     )  ss.:
COUNTY OF HARTFORD   )

                  On the ________ day of ________, 1996, before me personally
came , to me known, who, being by me duly sworn, did depose and say that (s)he
is _________________________________________________ of AETNA LIFE AND CASUALTY
COMPANY, one of the corporations described in and which executed the foregoing
instrument; that (s)he knows the seal of said corporation; that the seal affixed
to said instrument is such corporate seal; that it was so affixed by authority
of the Board of Directors of said corporation, and that (s)he signed her/his
name thereto by like authority.


                                       ----------------------------------------
                                       Notary Public

                                      -98-
<PAGE>   107
STATE OF CONNECTICUT )
                     )  ss.:
COUNTY OF HARTFORD   )

                  On the ________ day of ________, 1996, before me personally
came , to me known, who, being by me duly sworn, did depose and say that (s)he
is _______________________________________________ of AETNA INC., one of the
corporations described in and which executed the foregoing instrument; that
(s)he knows the seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by authority of the
Board of Directors of said corporation, and that (s)he signed her/his name
thereto by like authority.


                                       ----------------------------------------
                                       Notary Public

                                      -99-
<PAGE>   108
COMMONWEALTH OF MASSACHUSETTS )
                              )  ss.:
COUNTY OF SUFFOLK             )

                  On the ________ day of ________, 1996, before me personally
came , to me known, who, being by me duly sworn, did depose and say that (s)he
is _______________________________________________ of STATE STREET BANK AND
TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION, one of the corporations
described in and which executed the foregoing instrument; that (s)he knows the
seal of said corporation; that the seal affixed to said instrument is such
corporate seal; that it was so affixed by authority of the Board of Directors of
said corporation, and that (s)he signed her/his name thereto by like authority.


                                       ----------------------------------------
                                       Notary Public

                                      -100-

<PAGE>   1
                                                                    Exhibit 4.2
                         AETNA LIFE AND CASUALTY COMPANY
                      (To Be Renamed Aetna Services, Inc.)
                                                                         ISSUER

                                    AETNA INC.,

                                                                      GUARANTOR

                                       and

                           STATE STREET BANK AND TRUST
                  COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION,

                                                                       TRUSTEE

                                   ----------


                                    INDENTURE

                            Dated as of July 1, 1996

                                   ----------





                          Subordinated Debt Securities
<PAGE>   2
               Reconciliation and tie between certain Sections of
                  this Indenture, dated as of July 1, 1996, and
                     Sections 310 through 318, inclusive, of
                        the Trust Indenture Act of 1939:

<TABLE>
<CAPTION>
<S>                                                                     <C>
Trust Indenture
  Act Section         ............................................      Indenture Section

Section310(a)(1)      ............................................      609
     (a)(2)           ............................................      609
     (a)(3)           ............................................      Not Applicable
     (a)(4)           ............................................      Not Applicable
     (b)              ............................................      608
                                                                        610
Section311(a)         ............................................      613
     (b)              ............................................      613
Section312(a)         ............................................      701
                                                                        702(a)
     (b)              ............................................      702(b)
     (c)              ............................................      702(c)
Section313(a)         ............................................      703(a)
     (b)              ............................................      703(a)
     (c)              ............................................      703(a)
     (d)              ............................................      703(b)
Section314(a)         ............................................      704
     (a)(4)           ............................................      101
                                                                        1004
     (b)              ............................................      Not Applicable
     (c)(1)           ............................................      102
     (c)(2)           ............................................      102
     (c)(3)           ............................................      Not Applicable
     (d)              ............................................      Not Applicable
     (e)              ............................................      102
Section315(a)         ............................................      601
     (b)              ............................................      602
     (c)              ............................................      601
     (d)              ............................................      601
     (e)              ............................................      514
Section316(a)         ............................................      101
     (a)(1)(A)        ............................................      502
                                                                        512
     (a)(1)(B)        ............................................      513
     (a)(2)           ............................................      Not Applicable
     (b)              ............................................      508
     (c)              ............................................      104(c)
</TABLE>
<PAGE>   3
<TABLE>
<CAPTION>
<S>                                                                     <C>
Section317(a)(1)      ............................................      503
     (a)(2)           ............................................      504
     (b)              ............................................      1003
Section318(a)         ............................................      107
</TABLE>

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

                                        3
<PAGE>   4
<TABLE>
<CAPTION>
                                TABLE OF CONTENTS
                                   ----------

                                                                                       Page
                                                                                       ----
<S>                                                                                      <C>
PARTIES..............................................................................    1
RECITALS.............................................................................    1

                                   ARTICLE ONE

             DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

Section 101. Definitions:............................................................    1
             Act.....................................................................    2
             Authenticating Agent....................................................    2
             Board of Directors......................................................    2
             Board Resolution........................................................    3
             Business Day............................................................    3
             Commission..............................................................    3
             Common Stock............................................................    3
             Company.................................................................    3
             Company Request; Company Order..........................................    4
             Corporate Trust Office..................................................    4
             corporation.............................................................    4
             Covenant Defeasance.....................................................    4
             Debt....................................................................    4
             Defaulted Interest......................................................    4
             Defeasance..............................................................    5
             Depositary..............................................................    5
             Event of Default........................................................    5
             Exchange Act............................................................    5
             Floating or Adjustable Rate Provision...................................    5
             Floating or Adjustable Rate Security....................................    5
             Foreign Government Obligations..........................................    5
             Global Security.........................................................    5
             Guarantee...............................................................    5
             Guaranteed Obligations..................................................    5
             Guarantor...............................................................    5
             Guarantor Junior Subordinated Payment...................................    6
             Guarantor Proceeding....................................................    6
             Holder..................................................................    6
             Indenture...............................................................    6
             interest................................................................    6
             Interest Payment Date...................................................    6
             Junior Subordinated Payment.............................................    6
             Maturity................................................................    6
             Non-Recourse Debt.......................................................    6
</TABLE>

- ------------
NOTE:  This table of contents shall not, for any purpose, be
deemed to be a part of the Indenture.

                                       -i-
<PAGE>   5
<TABLE>
<CAPTION>
                                                                                       Page
                                                                                       ----

<S>                                                                                      <C>
             Notice of Default.......................................................    6
             Officers' Certificate...................................................    6
             Opinion of Counsel......................................................    7
             Original Issue Discount Security........................................    7
             Outstanding.............................................................    7
             Paying Agent............................................................    8
             Person..................................................................    8
             Place of Payment........................................................    9
             Predecessor Security....................................................    9
             Principal Subsidiary....................................................    9
             Proceeding..............................................................    9
             Redemption Date.........................................................    9
             Redemption Price........................................................    9
             Regular Record Date.....................................................    9
             Responsible Officer.....................................................   10
             Securities..............................................................   10
             Security Register and Security
              Registrar..............................................................   10
             Senior Debt.............................................................   10
             Special Record Date.....................................................   10
             Stated Maturity.........................................................   10
             Subsidiary..............................................................   11
             Trustee.................................................................   11
             Trust Indenture Act.....................................................   11
             U.S. Government Obligations.............................................   11
             Vice President..........................................................   11
Section 102. Compliance Certificates and Opinions....................................   11
Section 103. Form of Documents Delivered to Trustee..................................   12
Section 104. Acts of Holders; Record Dates...........................................   13
Section 105. Notices, Etc., to Trustee, Company,
               and Guarantor.........................................................   15
Section 106. Notice to Holders; Waiver...............................................   15
Section 107. Conflict with Trust Indenture Act.......................................   16
Section 108. Effect of Headings and
              Table of Contents......................................................   16
Section 109. Successors and Assigns..................................................   16
Section 110. Separability Clause.....................................................   17
Section 111. Benefits of Indenture...................................................   17
Section 112. Governing Law...........................................................   17
Section 113. Legal Holidays..........................................................   17
Section 114. Personal Immunity from Liability for
             Incorporators, Stockholders, Etc. ......................................   18


                     ARTICLE TWO

                   SECURITY FORMS

Section 201. Forms Generally.........................................................   18
</TABLE>

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deemed to be a part of the Indenture.

                                      -ii-
<PAGE>   6
<TABLE>
<CAPTION>
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Section 202. Form of Face of Security................................................   19
Section 203. Form of Reverse of Security.............................................   22
Section 204. Form of Legend for Global Securities....................................   27
Section 205. Form of Trustee's Certificate of
              Authentication.........................................................   28
Section 206. Form of Guarantee.......................................................   28

                                  ARTICLE THREE

                                 THE SECURITIES

Section 301. Amount Unlimited; Issuable in Series....................................   31
Section 302. Denominations...........................................................   35
Section 303. Execution, Authentication, Delivery
              and Dating.............................................................   35
Section 304. Temporary Securities....................................................   38
Section 305. Registration, Registration of Transfer
              and Exchange...........................................................   38
Section 306. Mutilated, Destroyed, Lost and Stolen

              Securities.............................................................   40
Section 307. Payment of Interest; Interest Rights

              Preserved..............................................................   41
Section 308. Persons Deemed Owners...................................................   43
Section 309. Cancellation............................................................   44
Section 310. Computation of Interest.................................................   44

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

Section 401. Satisfaction and Discharge of Indenture.................................   44
Section 402. Application of Trust Fund...............................................   46

                                  ARTICLE FIVE

                                    REMEDIES

Section 501. Events of Default.......................................................   47
Section 502. Acceleration of Maturity; Rescission
              and Annulment..........................................................   50
</TABLE>

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deemed to be a part of the Indenture.

                                      -iii-
<PAGE>   7
<TABLE>
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Section 503. Collection of Indebtedness and Suits
              for Enforcement by Trustee.............................................   53
Section 504. Trustee May File Proofs of Claim........................................   54
Section 505. Trustee May Enforce Claims Without
              Possession of Securities...............................................   55
Section 506. Application of Money Collected..........................................   55
Section 507. Limitation on Suits.....................................................   56
Section 508. Unconditional Right of Holders to
              Receive Principal, Premium and
              Interest ..............................................................   57
Section 509. Restoration of Rights and Remedies......................................   57
Section 510. Rights and Remedies Cumulative..........................................   57
Section 511. Delay or Omission Not Waiver............................................   57
Section 512. Control by Holders......................................................   58
Section 513. Waiver of Past Defaults.................................................   58
Section 514. Undertaking for Costs...................................................   59

                                   ARTICLE SIX

                                   THE TRUSTEE

Section 601. Certain Duties and Responsibilities.....................................   60
Section 602. Notice of Defaults......................................................   60
Section 603. Certain Rights of Trustee...............................................   60
Section 604. Not Responsible for Recitals or
              Issuance of Securities.................................................   62
Section 605. May Hold Securities.....................................................   62
Section 606. Money Held in Trust.....................................................   62
Section 607. Compensation and Reimbursement..........................................   63
Section 608. Disqualification; Conflicting
              Interests..............................................................   63
Section 609. Corporate Trustee Required;
              Eligibility............................................................   64
Section 610. Resignation and Removal; Appointment of
              Successor..............................................................   64
Section 611. Acceptance of Appointment by
              Successor..............................................................   66
Section 612. Merger, Conversion, Consolidation or
              Succession to Business.................................................   67
Section 613. Preferential Collection of Claims
              Against Company or Guarantor...........................................   68
Section 614. Appointment of Authenticating Agent.....................................   68
</TABLE>

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NOTE:  This table of contents shall not, for any purpose, be
deemed to be a part of the Indenture.

                                      -iv-
<PAGE>   8
<TABLE>
<CAPTION>
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                                  ARTICLE SEVEN

                 HOLDERS' LISTS AND REPORTS BY TRUSTEE, COMPANY
                                  AND GUARANTOR

<S>                                                                                     <C>
Section 701. Company and Guarantor to Furnish Trustee
              Names and Addresses of Holders.........................................   70
Section 702. Preservation of Information;
              Communications to Holders..............................................   70
Section 703. Reports by Trustee......................................................   71
Section 704. Reports by Company and Guarantor........................................   71


                           ARTICLE EIGHT

             CONSOLIDATION, MERGER, OR SALE OF ASSETS

Section 801. Company or Guarantor May Consolidate,
              Etc., Only on Certain Terms............................................   72
Section 802. Successor Substituted...................................................   73
Section 803. Assumption by Guarantor or Subsidiary
              of Company's Obligations...............................................   73

                           ARTICLE NINE

                      SUPPLEMENTAL INDENTURES

Section 901. Supplemental Indentures Without Consent
              of Holders.............................................................   75
Section 902. Supplemental Indentures with Consent of
              Holders................................................................   77
Section 903. Execution of Supplemental Indentures....................................   79
Section 904. Effect of Supplemental Indentures.......................................   79
Section 905. Conformity with Trust Indenture Act.....................................   79
Section 906. Reference in Securities to Supplemental
              Indentures.............................................................   79
Section 907. Waiver of Compliance by Holders.........................................   79
Section 908. Subordination Unimpaired................................................   80
</TABLE>

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NOTE:  This table of contents shall not, for any purpose, be
deemed to be a part of the Indenture.

                                       -v-
<PAGE>   9
<TABLE>
<CAPTION>
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                                   ARTICLE TEN

                                    COVENANTS

<S>                                                                                      <C>
Section 1001. Payment of Principal, Premium and
               Interest...............................................................   80
Section 1002. Maintenance of Office or Agency
              by Company and Guarantor................................................   80
Section 1003. Money for Securities Payments to Be
               Held in Trust..........................................................   81
Section 1004. Statement by Officers as to Default. . .  83
Section 1005. Limitations on Liens on Common Stock of
              Principal Subsidiaries..................................................   83

                    ARTICLE ELEVEN

               REDEMPTION OF SECURITIES

Section 1101. Applicability of Article................................................   84
Section 1102. Election to Redeem; Notice to Trustee...................................   84
Section 1103. Selection by Trustee of Securities to
               Be Redeemed............................................................   84
Section 1104. Notice of Redemption....................................................   85
Section 1105. Deposit of Redemption Price.............................................   86
Section 1106. Securities Payable on Redemption Date...................................   86
Section 1107. Securities Redeemed in Part.............................................   86

                                 ARTICLE TWELVE

                       DEFEASANCE AND COVENANT DEFEASANCE

Section 1201. Company's Option to Effect
               Defeasance or Covenant Defeasance......................................   87
Section 1202. Defeasance and Discharge................................................   87
Section 1203. Covenant Defeasance.....................................................   88
Section 1204. Conditions to Defeasance or
               Covenant Defeasance....................................................   88
</TABLE>

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NOTE:  This table of contents shall not, for any purpose, be
deemed to be a part of the Indenture.

                                      -vi-
<PAGE>   10
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Section 1205. Deposited Money and U.S. Government
               Obligations or Foreign Government
               Obligations to be Held In Trust;
               Other Miscellaneous Provisions.........................................   92
Section 1206. Reinstatement...........................................................   93

                                ARTICLE THIRTEEN

                                  SINKING FUNDS

Section 1301. Applicability of Article................................................   93
Section 1302. Satisfaction of Sinking Fund Payments
               with Securities........................................................   94
Section 1303. Redemption of Securities for Sinking
               Fund...................................................................   94

                                ARTICLE FOURTEEN

                           SUBORDINATION OF SECURITIES

Section 1401. Securities Subordinate to
               Senior Debt of the Company.............................................   95
Section 1402. Payment Over of Proceeds Upon
               Dissolution, Etc of the Company........................................   95
Section 1403. Prior Payment to Senior Debt of the
               Company Upon Acceleration of
               Securities.............................................................   97
Section 1404. No Payment When Senior
               Debt in Default........................................................   98
Section 1405. Payment Permitted If No Default.........................................   98
Section 1406. Subrogation to Rights of Holders
               of Senior Debt of the Company..........................................   99
Section 1407. Provisions Solely to Define
               Relative Rights........................................................  100
Section 1408. Trustee to Effectuate Subordination.....................................  100
Section 1409. No Waiver of Subordination Provisions...................................  100
Section 1410. Notice to Trustee.......................................................  101
Section 1411. Reliance on Judicial Order or
               Certificate of Liquidating Agent.......................................  102
Section 1412. Trustee Not Fiduciary For Holders
               of Senior Debt.........................................................  103
</TABLE>

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deemed to be a part of the Indenture.

                                      -vii-
<PAGE>   11
<TABLE>
<CAPTION>
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Section 1413. Rights of Trustee as Holder of Senior
               Debt; Preservation of Trustee's
               Rights.................................................................  103
Section 1414. Article Applicable to Paying Agents.....................................  103
Section 1415. Defeasance of This Article Fourteen.....................................  103

                                 ARTICLE FIFTEEN

                             GUARANTEE OF SECURITIES

Section 1501. Guarantee...............................................................  104
Section 1502. Subrogation.............................................................  105
Section 1503. Reinstatement...........................................................  105
Section 1504. Execution and Delivery of Guarantees ...................................  105

                                 ARTICLE SIXTEEN

                           Subordination of Guarantees

Section 1601. Guarantees Subordinate to Senior
               Debt of the Guarantor..................................................  106

Section 1602. Payment Over of Proceeds Upon
               Dissolution, Etc. of the Guarantor.....................................  106
Section 1603. Prior Payment to Senior Debt of the
               Guarantor Upon Acceleration of
               Securities.............................................................  108
Section 1604. No Payment When Senior Debt of the
               Guarantor in Default...................................................  109
Section 1605. Payment Permitted If No Default.........................................  108
Section 1606. Subrogation to Rights of Holders of
               Senior Debt of the Guarantor...........................................  110
Section 1607. Provisions Solely to Define Relative
               Rights.................................................................  111
Section 1608. Trustee to Effectuate Subordination.....................................  112
Section 1609. No Waiver of Subordination Provisions...................................  112
Section 1610. Notice to Trustee.......................................................  112
Section 1611. Reliance on Judicial Order or
               Certificate of Liquidating Agent.......................................  113
Section 1612. Trustee Not Fiduciary For Holders of
               Senior Debt of the Guarantor...........................................  114
Section 1613. Rights of Trustee as Holder of Senior
               Debt; Preservation of Trustee's
               Rights.................................................................  114
</TABLE>

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deemed to be a part of the Indenture.

                                     -viii-
<PAGE>   12
<TABLE>
<CAPTION>
                                                                                       Page
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<S>                                                                                     <C>
Section 1614. Article Applicable to Paying Agents.....................................  114
Section 1615. Defeasance of This Article Sixteen......................................  115

TESTIMONIUM...........................................................................  116
SIGNATURES AND SEALS..................................................................  116
ACKNOWLEDGMENTS.......................................................................  117
</TABLE>

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NOTE:  This table of contents shall not, for any purpose be deemed to be a part
of the Indenture.



                                       ix
<PAGE>   13
                  INDENTURE, dated as of July 1, 1996, among AETNA LIFE AND
CASUALTY COMPANY (to be renamed Aetna Services, Inc.), a corporation duly
organized and validly existing under the laws of the State of Connecticut
(herein called the "Company"), having its principal office at 151 Farmington
Avenue, Hartford, Connecticut 06156, AETNA INC., a corporation duly organized
and existing under the laws of the State of Connecticut (herein called the
"Guarantor"), having its principal office at 151 Farmington Avenue, Hartford,
Connecticut 06156, and STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT,
NATIONAL ASSOCIATION, a national association duly organized and existing under
the laws of the United States of America, as Trustee (herein called the
"Trustee").

                                    RECITALS

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

                  The Guarantor has duly authorized the unconditional guarantee
of the Securities on the terms hereinafter set forth and the execution and
delivery of the Indenture.

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

                  NOW, THEREFORE, THIS INDENTURE WITNESSETH:

                  For and in consideration of the premises and the purchase of
the Securities by the Holders thereof, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, as
follows:
<PAGE>   14
                                   ARTICLE ONE

                        Definitions and Other Provisions
                             of General Application

Section 101.  Definitions.

                  For all purposes of this Indenture, except as otherwise
expressly provided or unless the context otherwise requires:

                  (1) the terms defined in this Article have the meanings
         assigned to them in this Article and include the plural as well as the
         singular;

                  (2) all other terms used herein which are defined in the Trust
         Indenture Act or the Securities Act of 1933, as amended, either
         directly or by reference therein, have the meanings assigned to them
         therein;

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

                  (4) the words "Article" and "Section" refer to an Article and
         Section, respective- ly, of this Indenture; and

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

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

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

                                       -2-
<PAGE>   15
                  "Board of Directors", when used with reference to either the
Company or the Guarantor, means either (i) the Board of Directors of the Company
or the Guarantor, as the case may be, the Executive Committee of such Board of
Directors or any other duly authorized committee of directors and/or officers
appointed by such Board of Directors or Executive Committee, or (ii) one or more
duly authorized officers of the Company or the Guarantor, as the case may be, to
whom the Board of Directors of the Company or the Guarantor or a committee
thereof has delegated the authority to act with respect to the matters
contemplated by this Indenture.

                  "Board Resolution", when used with reference to either the
Company or the Guarantor, means (i) a copy of a resolution certified by the
Corporate Secretary or an Assistant Corporate Secretary of the Company or the
Guarantor, as the case may be, to have been duly adopted by the Board of
Directors or a committee thereof and to be in full force and effect on the date
of such certification or (ii) a certificate signed by the authorized officer or
officers of the Company or the Guarantor, as the case may be, to whom the Board
of Directors of the Company or the Guarantor or a committee thereof has
delegated its authority (as described in the definition of Board of Directors),
and in each case, delivered to the Trustee.

                  "Business Day", when used with respect to any Place of
Payment, means each Monday, Tuesday, Wednesday, Thursday and Friday which is not
a day on which banking institutions in that Place of Payment are authorized or
obligated by law or executive order to close.

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

                  "Common Stock" means with respect to any Principal Subsidiary,
stock of any class, however designated, except stock which is non-participating
beyond fixed dividend and liquidation preferences and the holders of which have
either no voting rights or limited voting rights entitling them, only in the
case of certain contingencies, to elect less than a majority of the directors
(or persons performing similar functions) of such Principal Subsidiary, and
shall include securities of any class, however designated, which are convertible
into such Common Stock.

                                       -3-
<PAGE>   16
                  "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

                  "Company Request" or "Company Order", when used with reference
to the Company or the Guarantor, means a written request or order signed in the
name of the Company or of the Guarantor, as the case may be, by (i) any two of
the following individuals: the Chairman, the President, a Vice Chairman, or a
Vice President, or (ii) by one of the foregoing individuals and by any other
Vice President, the Treasurer, an Assistant Treasurer, the Corporate Secretary
or an Assistant Corporate Secretary or any other individual authorized by the
Board of Directors for such purpose, and delivered to the Trustee.

                  "Corporate Trust Office" means the principal office of the
Trustee located at 750 Main Street, Suite 1114, Hartford, Connecticut 06103 at
which at any particular time its corporate trust business shall be administered.

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

                  "Covenant Defeasance" has the meaning specified in Section
1203.

                  "Debt" means (without duplication and without regard to any
portion of principal amount that has not accrued and to any interest component
thereof (whether accrued or imputed) that is not due and payable) with respect
to any Person, whether recourse is to all or a portion of the assets of such
Person and whether or not contingent, (i) every obligation of such Person for
money borrowed, (ii) every obligation of such Person evidenced by bonds,
debentures, notes or other similar instruments, including obligations incurred
in connection with the acquisition of property, assets or businesses, (iii)
every reimbursement obligation of such Person with respect to letters of credit,
bankers' acceptances or similar facilities issued for the account of such
Person, (iv) every obligation of such Person issued or assumed as the deferred
purchase price of property or services (but excluding trade accounts payable or
accrued liabilities arising in the ordinary course of business), (v) every
capital lease obligation of such Person, and (vi) every obligation of the type
referred to in clauses (i) through (v) of another Person and all dividends of
another Person the payment of which, in either case, such Person has

                                       -4-
<PAGE>   17
guaranteed or is responsible or liable for, directly or indirectly, as obligor
or otherwise.

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

                  "Defeasance" has the meaning specified in Section 1202.

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

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

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

                  "Floating or Adjustable Rate Provision" means a formula or
provision, specified in or pursuant to a Board Resolution or an indenture
supplemental hereto, providing for the determination, whether pursuant to
objective factors or pursuant to the sole discretion of any Person (including
the Company), and periodic adjustment of the interest rate borne by a Floating
or Adjustable Rate Security.

                  "Floating or Adjustable Rate Security" means any Security
which provides for interest thereon at a periodic rate that may vary from time
to time over the term thereof in accordance with a Floating or Adjustable Rate
Provision.

                  "Foreign Government Obligations" has the meaning specified in
Section 1204.

                  "Global Security" means a Security that evidences all or part
of the Securities of any series and is authenticated and delivered to, and
registered in the name of, the Depositary for such Securities or a nominee
thereof.

                  "Guarantee" means any guarantee of the Guarantor endorsed on a
Security authenticated and delivered pursuant to this Indenture and shall
include the guarantee set forth in Section 1501.

                  "Guaranteed Obligations" shall have the meaning set forth in
Section 1501.

                                       -5-
<PAGE>   18
                  "Guarantor" means the Person named as the "Guarantor" in the
first paragraph of this instrument until a successor Person shall have become
such pursuant to the applicable provisions of this Indenture, and thereafter
"Guarantor" shall mean such successor Person.

                  "Guarantor Junior Subordinated Payment" has the meaning
specified in Section 1602.

                  "Guarantor Proceeding" has the meaning specified in Section
1602.

                  "Holder" means a Person in whose name a Security is registered
in the Security Register.

                  "Indenture" means this instrument as originally executed or as
it may from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof,
including, for all purposes of this instrument and any such supplemental
indenture, the provisions of the Trust Indenture Act that are deemed to be a
part of and govern this instrument and any such supplemental indenture,
respectively. The term "Indenture" shall also include the terms of particular
series of Securities established as contemplated by Section 301.

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

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

                  "Junior Subordinated Payment" has the meaning specified in
Section 1402.

                  "Maturity", when used with respect to any Security, means the
date on which the principal of such Security or an instalment of principal
becomes due and payable as therein or herein provided, whether at the Stated
Maturity or by declaration of acceleration, call for redemption or otherwise.

                  "Non-Recourse Debt" means any indebtedness for money borrowed
as to which the liability of the Guarantor, the Company or the Principal
Subsidiaries is limited solely to specific assets.

                                       -6-
<PAGE>   19
                  "Notice of Default" means a written notice of the kind
specified in Section 501(4).

                  "Officers' Certificate" when used with respect to the Company
or the Guarantor, means a certificate signed by (i) any two of the following
individuals: the Chairman, the President, a Vice Chairman or a Vice President,
or (ii) by one of the foregoing individuals and by any other Vice President, the
Treasurer, an Assistant Treasurer, the Corporate Secretary or an Assistant
Corporate Secretary, of the Company or the Guarantor, as the case may be, or any
other individual authorized by the Board of Directors of the Company or the
Guarantor, as the case may be, for such purpose, and delivered to the Trustee.
One of the officers signing an Officers' Certificate given pursuant to Section
1004 shall be the principal executive, financial or accounting officer of the
Company or the Guarantor, as the case may be.

                  "Opinion of Counsel" means a written opinion of counsel, who
may be an employee of or counsel to the Company or the Guarantor, as the case
may be, or who may be other counsel reasonably satisfactory to the Trustee. Each
such opinion shall include the statements required by Section 314(e) of the
Trust Indenture Act, if applicable.

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

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

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

                  (ii) Securities for whose payment or redemption money in the
         necessary amount has been theretofore deposited with the Trustee or any
         Paying Agent (other than the Company or the Guarantor) in trust or set
         aside and segregated in trust by the Company or the Guarantor (if the
         Company or the Guarantor shall act as Paying Agent) for the Holders of
         such Securities; provided that, if such Securities are to be redeemed,
         notice of such

                                       -7-
<PAGE>   20
         redemption has been duly given pursuant to this Indenture or provision
         therefor satisfactory to the Trustee has been made;

                  (iii) Securities as to which Defeasance has been effected
         pursuant to Section 1202; and

                  (iv) Securities which have been paid pursuant to Section 306
         or in exchange for or in lieu of which other Securities have been
         authenticated and delivered pursuant to this Indenture, other than any
         such Securities in respect of which there shall have been presented to
         the Trustee proof satisfactory to it that such Securities are held by a
         bona fide purchaser in whose hands such Securities are valid
         obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (A) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding shall be the amount of the principal thereof that would be due and
payable as of the date of such determination upon acceleration of the Maturity
thereof pursuant to Section 502, (B) the principal amount of a Security
denominated in one or more foreign currencies or currency units shall be the
U.S. dollar equivalent, determined in the manner provided as contemplated by
Section 301 on the date of original issuance of such Security, of the principal
amount (or, in the case of an Original Issue Discount Security, the U.S. dollar
equivalent on the date of original issuance of such Security of the amount
determined as provided in (A) above) of such Security, and (C) Securities owned
by the Company, the Guarantor or any other obligor upon the Securities or any
Subsidiary of the Company or the Guarantor or of such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in relying upon any such request, demand,
authorization, direction, notice, consent or waiver, only Securities which the
Trustee knows to be so owned shall be so disregarded. Securities so owned which
have been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company, the
Guarantor or any other obligor upon the Securities or any Subsidiary of the
Company, the Guarantor or of such other obligor.

                                       -8-
<PAGE>   21
                  "Paying Agent" means any Person authorized by the Company to
pay the principal of or any premium or interest on any Securities on behalf of
the Company.

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

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

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

                  "Principal Subsidiary" means only Aetna Life Insurance
Company, Aetna Life Insurance and Annuity Company and U.S. Healthcare, Inc., and
any other Subsidiary of the Guarantor which shall hereafter succeed by merger or
otherwise to a major part of the business of one or more of the Principal
Subsidiaries. The decision as to whether a Subsidiary shall have succeeded to a
major part of the business of one or more of the Principal Subsidiaries shall be
made in good faith by the Board of Directors of the Guarantor or a committee
thereof by the adoption of a resolution so stating, and the Guarantor shall
within 30 days of the date of the adoption of such resolution deliver to the
Trustee a copy thereof, certified by the Corporate Secretary or an Assistant
Corporate Secretary of the Guarantor.

                  "Proceeding" has the meaning specified in Section 1402.

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

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

                                       -9-
<PAGE>   22
                  "Regular Record Date" for the interest payable on any Interest
Payment Date on the Securities of any series means the date specified for that
purpose as contemplated by Section 301.

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

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

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

                  "Senior Debt" with respect to any Person means the principal
of (and premium, if any) and interest, if any (including interest accruing on or
after the filing of any petition in bankruptcy or for reorganization relating to
such Person to the extent that such claim for post-petition interest is allowed
in such proceeding), on Debt of such Person, whether incurred on or prior to the
date of this Indenture or thereafter incurred, unless, in the instrument
creating or evidencing the same or pursuant to which the same is outstanding, it
is provided that such obligations are not superior in right of payment to the
Securities, in the case of the Company, or the Guarantees, in the case of the
Guarantor, or to other Debt of such Person which is pari passu with, or
subordinated to the Securities, in the case of the Company, or the Guarantees,
in the case of the Guarantor; provided, however, that Senior Debt shall not be
deemed to include (1) in the case of the Company, the Securities, or (2) in the
case of the Guarantor, the Guarantees.

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

                                      -10-
<PAGE>   23
                  "Stated Maturity", when used with respect to any Security or
any instalment of principal thereof or interest thereon, means the date
specified in such Security as the fixed date on which the principal of such
Security or such instalment of principal or interest is due and payable.

                  "Subsidiary" of any Person means a corporation more than 50%
of the voting power of which is controlled, directly or indirectly, by such
Person or by one or more other Subsidiaries of such Person or by such Person and
one or more other Subsidiaries of such Person. For the purposes of this
definition, "voting power" means the power to vote for the election of
directors, whether at all times or only so long as no senior class of stock has
such voting power by reason of any contingency.

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

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

                  "U.S. Government Obligations" has the meaning specified in
Section 1204.

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

Section 102.  Compliance Certificates and Opinions.

                  Upon any application or request by the Company or the
Guarantor to the Trustee to take any action under any provision of this
Indenture, the Company or the Guarantor, as the case may be, shall furnish to
the Trustee such certificates and opinions as may be required under the Trust
Indenture Act. Each such certificate or opinion shall be given in the form of an
Officers' Certificate, if to be

                                      -11-
<PAGE>   24
given by an officer of the Company or the Guarantor, or an Opinion of Counsel,
if to be given by counsel, and shall comply with the requirements of the Trust
Indenture Act and any other requirements set forth in this Indenture.

                  Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (excluding certificates
provided for in Section 1004) shall include

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

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

                  (3) a statement that, in the opinion of each such individual,
         such individual has made such examination or investigation as is
         necessary to enable such individual to express an informed opinion as
         to whether or not such covenant or condition has been complied with;
         and

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

Section 103.  Form of Documents Delivered to Trustee.

                  In any case where several matters are required to be certified
by, or covered by an opinion of, any specified Person, it is not necessary that
all such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

                  Any certificate or opinion of an officer of the Company or the
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the

                                      -12-
<PAGE>   25
certificate or opinion or representations with respect to the matters upon which
its certificate or opinion is based are erroneous. Any such certificate or
opinion of counsel may be based, insofar as it relates to factual matters, upon
a certificate or opinion of, or representations by, an officer or officers of
the Company or the Guarantor, as the case may be, stating that the information
with respect to such factual matters is in the possession of the Company or the
Guarantor, as the case may be, unless such counsel knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to such matters are erroneous.

                  Any certificate, statement or opinion of an officer of the
Company or the Guarantor or of counsel may be based, insofar as it relates to
accounting matters, upon a certificate, opinion or representation by an
accountant or firm of accountants in the employ of the Company or the Guarantor,
as the case may be, unless such officer or counsel, as the case may be, knows,
or in the exercise of reasonable care should know, that the certificate, opinion
or representation with respect to such accounting matters upon which its
certificate, statement or opinion may be based is erroneous.

                  Where any Person is required to make, give or execute two or
more applications, requests, consents, certificates, statements, opinions or
other instruments under this Indenture, they may, but need not, be consolidated
and form one instrument.

Section 104.  Acts of Holders; Record Dates.

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

                                      -13-
<PAGE>   26
                  (b) The fact and date of the execution by any Person of any
such instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him or her the execution thereof.
Where such execution is by a signer acting in a capacity other than such
signer's individual capacity, such certificate or affidavit shall also
constitute sufficient proof of such signer's authority. The fact and date of the
execution of any such instrument or writing, or the authority of the Person
executing the same, may also be proved in any other manner which the Trustee
deems sufficient.

                  (c) The Company or the Guarantor may, in the circumstances
permitted by the Trust Indenture Act, fix any day as the record date for the
purpose of determining the Holders of Outstanding Securities of any series
entitled to give or take any request, demand, authorization, direction, notice,
consent, waiver or other action, or to vote on any action, authorized or
permitted to be given or taken by Holders of Outstanding Securities of such
series. If not set by the Company or the Guarantor prior to the first
solicitation of a Holder of Securities of such series made by any Person in
respect of any such action, or, in the case of any such vote, prior to such
vote, the record date for any such action or vote shall be the 30th day (or, if
later, the date of the most recent list of Holders required to be provided
pursuant to Section 701) prior to such first solicitation or vote, as the case
may be. With regard to any record date for action to be taken by the Holders of
one or more series of Securities, only the Holders of Securities of such series
on such date (or their duly designated proxies) shall be entitled to give or
take, or vote on, the relevant action.

                  (d) The ownership of Securities shall be proved by the
Security Register or by a certificate of the Security Registrar.

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

                                      -14-
<PAGE>   27
                  (f) Without limiting the foregoing, a Holder entitled
hereunder to give or take any action hereunder with regard to any particular
Security may do so with regard to all or any part of the principal amount of
such Security or by one or more duly appointed agents each of which may do so
pursuant to such appointment with regard to all or any different part of such
principal amount.

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

                  Any request, demand, authorization, direction, notice,
consent, waiver or Act of Holders or other document provided or permitted by
this Indenture to be made upon, given or furnished to, or filed with,

                  (1) the Trustee by any Holder or by the Company or by the
         Guarantor shall be sufficient for every purpose hereunder if made,
         given, furnished or filed in writing to or with the Trustee at its
         Corporate Trust Office, Attention: Corporate Trust Department, or

                  (2) the Company or the Guarantor by the Trustee or by any
         Holder shall be sufficient for every purpose hereunder (unless
         otherwise herein expressly provided) if in writing and mailed, in the
         case of the Company, first-class postage prepaid, to the Company
         addressed to it at the address of its principal office specified in the
         first paragraph of this instrument, Attention: Treasurer, or at any
         other address previously furnished in writing to the Trustee by the
         Company, with a copy to the Guarantor, and, in the case of the
         Guarantor, first-class postage prepaid and addressed to it at the
         address of its principal office specified in the first paragraph of
         this instrument, Attention: Treasurer, or at any other address
         previously furnished in writing to the Trustee by the Guarantor, with a
         copy to the Company.

Section 106.      Notice to Holders; Waiver.

                  Where this Indenture provides for notice to Holders of any
event, such notice shall be sufficiently given (unless otherwise herein
expressly provided) if in writing and mailed, first-class postage prepaid, to
each Holder affected by such event, at its address as it appears in the


                                      -15-
<PAGE>   28
Security Register, not later than the latest date (if any), and not earlier than
the earliest date (if any), prescribed for the giving of such notice; provided,
however, that the Company, the Guarantor or the Trustee, upon a good faith
determination that mailing is in the circumstances impractical, may give such
notice by any other method which, in the reasonable belief of the Company or the
Guarantor or, in the case of the Trustee, of the Company, the Guarantor and the
Trustee, is likely to be received by the Holders. In any case where notice to
Holders is given by mail, neither the failure to mail such notice, nor any
defect in any notice so mailed, to any particular Holder shall affect the
sufficiency of such notice with respect to other Holders. Where this Indenture
provides for notice in any manner, such notice may be waived in writing by the
Person entitled to receive such notice, either before or after the event, and
such waiver shall be the equivalent of such notice. Waivers of notice by Holders
shall be filed with the Trustee, but such filing shall not be a condition
precedent to the validity of any action taken in reliance upon such waiver.

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

Section 107.      Conflict with Trust Indenture Act.

                  If any provision hereof limits, qualifies or conflicts with a
provision of the Trust Indenture Act that is required under such Act to be a
part of and govern this Indenture, the latter provision shall control. If any
provision of this Indenture modifies or excludes any provision of the Trust
Indenture Act that may be so modified or excluded, the latter provision shall be
deemed to apply to this Indenture as so modified or to be excluded, as the case
may be.

Section 108.      Effect of Headings and Table of Contents.

                  The Article and Section headings herein and the Table of
Contents are for convenience only and shall not affect the construction hereof.

Section 109.      Successors and Assigns.

                  All covenants and agreements in this Indenture by the Company
or the Guarantor shall bind their successors and assigns, whether so expressed
or not.

                                      -16-
<PAGE>   29
Section 110.      Separability Clause.

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

Section 111.      Benefits of Indenture.

                  Nothing in this Indenture or in the Securities or in the
Guarantees, express or implied, shall give to any Person, other than the parties
hereto and their successors hereunder and the Holders and, to the extent
specifically set forth herein, the holders of Senior Debt of the Company or the
Guarantor, as the case may be, any benefit or any legal or equitable right,
remedy or claim under this Indenture.

Section 112.      Governing Law.

                  This Indenture and the Securities and the Guarantees shall be
governed by and construed in accordance with the laws of the State of New York,
but without regard to principles of conflicts of laws.

Section 113.      Legal Holidays.

                  In any case where any Interest Payment Date, Redemption Date
or Stated Maturity of any Security shall not be a Business Day at any Place of
Payment, then (notwithstanding any other provision of this Indenture or of the
Securities (other than a provision of the Securities of any series which
specifically states that such provision shall apply in lieu of this Section))
payment of interest or principal (and premium, if any) need not be made at such
Place of Payment on such date, but may be made on the next succeeding Business
Day at such Place of Payment with the same force and effect as if made on the
Interest Payment Date or Redemption Date, or at the Stated Maturity, provided
that no interest shall accrue with respect to such payment for the period from
and after such Interest Payment Date, Redemption Date or Stated Maturity, as the
case may be, except that, if such Business Day is in the next succeeding
calendar year, such payment shall be made on the immediately preceding Business
Day, in each case with the same force and effect as if made on such Interest
Payment Date or Redemption Date, or at the Stated Maturity, as the case may be.


                                      -17-
<PAGE>   30
Section 114.      Personal Immunity from Liability for Incorpo-
                  rators, Stockholders, Etc.

                  No recourse shall be had for the payment of the principal of
or premium, if any, or interest, if any, on any Security, or for any claim based
thereon, or otherwise in respect of any Security or of the Guarantees, or based
on or in respect of this Indenture or any indenture supplemental hereto, against
any incorporator, or against any past, present or future stockholder, director
or officer, as such, of the Company or of any successor corporation, or of the
Guarantor or of any successor corporation, whether by virtue of any
constitution, statute or rule of law, or by the enforcement of any assessment or
penalty or otherwise, all such liability being expressly waived and released as
a condition of, and as consideration for, the execution of this Indenture and
the issue of the Securities and the Guarantees.


                                   ARTICLE TWO

                                 Security Forms

Section 201.      Forms Generally.

                  The Securities of each series shall be in substantially the
form set forth in this Article, or in such other form as shall be established by
or pursuant to a Board Resolution of the Company or in one or more indentures
supplemental hereto, in each case with such appropriate insertions, omissions,
substitutions and other variations as are required or permitted by this
Indenture, and may have such letters, numbers or other marks of identification
and such legends or endorsements placed thereon as may be required to comply
with the rules of any securities exchange or as may, consistent herewith, be
determined by the officers executing such Securities, as evidenced by their
execution of the Securities. If the form of Securities of any series is
established by action taken pursuant to a Board Resolution of the Company, a
copy of an appropriate record of such action shall be certified by the Corporate
Secretary or an Assistant Corporate Secretary of the Company and delivered to
the Trustee at or prior to the delivery of the Company Order contemplated by
Section 303 for the authentication and delivery of such Securities.

                  The Guarantees by the Guarantor to be endorsed on the
Securities of each series shall be substantially in such form set forth in
Section 206, or in such other form as shall be established by or pursuant to a
Board Resolution of

                                      -18-
<PAGE>   31
the Guarantor, or in one or more indentures supplemental hereto, in each case
with such appropriate insertions, omissions, substitutions and other variations
as are required or permitted by this Indenture and may have such letters,
numbers or other marks of identification and such legends or endorsements placed
thereon as may be required to comply with the rules of any securities exchange
or as may, consistent herewith, be determined by the officers executing such
Guarantees, all as evidenced by such execution. If the form of Guarantees to be
endorsed on the Securities of any series is established by action taken pursuant
to a Board Resolution of the Guarantor, a copy of an appropriate record of such
action shall be certified by the Corporate Secretary or an Assistant Corporate
Secretary of the Guarantor and delivered to the Trustee at or prior to the
delivery of the Company Order contemplated by Section 303 for the authentication
and delivery of such Securities.

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

Section 202.      Form of Face of Security.

                  [Insert any legend required by the Internal Reve-
nue Code and the regulations thereunder.]

                        [AETNA LIFE AND CASUALTY COMPANY]

                             [AETNA SERVICES, INC.]

                      [...%] GUARANTEED SUBORDINATED [ZERO
COUPON][NOTE][DEBENTURE]DUE...

No. .........                                                       [$] ........

         AETNA LIFE AND CASUALTY COMPANY, [AETNA SERVICES, INC.], a Connecticut
corporation (herein called the "Company", which term includes any successor
Person under the Indenture hereinafter referred to), for value received, hereby
promises to pay to .............................................., or regis-
tered assigns, the principal sum of ................ ...................
[Dollars] [if other than Dollars, sub- stitute other currency or currency units]
[if the Security is to bear interest prior to Maturity, insert -- , and to pay
interest thereon from ............. or from the most recent Interest Payment
Date to which interest has been paid or duly provided for, [semi-annually on
 ............ and

                                      -19-
<PAGE>   32
 ............ in each year] [If other than semi-annual payments, insert frequency
of payments and payment dates], commencing ........., at [If the Security is to
bear interest at a fixed rate, insert -- the rate of ....% per annum [If the
Security is a Floating or Adjustable Rate Security, insert -- a rate per annum
[computed-determined] in accordance with the [insert defined name of Floating or
Adjust- able Rate Provision] set forth below] [If the security is to bear
interest at a rate determined with reference to an index, refer to description
of index below] until the principal hereof is paid or made available for payment
[if applicable, insert -- , and (to the extent that the payment of such interest
shall be legally enforceable) at the rate of ....% per annum on any overdue
principal and premium and on any overdue instalment of interest]. The interest
so payable, and punctually paid or duly provided for, on any Interest Payment
Date will, as provided in such Indenture, be paid to the Person in whose name
this Security (or one or more Predecessor Securities) is registered at the close
of business on the Regular Record Date for such interest, which shall be the
 ....... or ....... (whether or not a Business Day), as the case may be, next
preceding such Interest Payment Date. Any such interest not so punctually paid
or duly provided for will forthwith cease to be payable to the Holder on such
Regular Record Date and may either be paid to the Person in whose name this
Security (or one or more Predecessor Securities) is registered at the close of
business on a Special Record Date for the payment of such De- faulted Interest
to be fixed by the Trustee, notice whereof shall be given to Holders of
Securities of this series not less than 10 days prior to such Special Record
Date, or be paid at any time in any other lawful manner not inconsistent with
the requirements of any securities exchange on which the Securities of this
series may be listed, and upon such notice as may be required by such exchange,
all as more fully provided in said Indenture].

                  The indebtedness evidenced by this Security is, to the extent
provided in the Indenture, subordinate and subject in right of payment to the
prior payment in full of all Senior Debt of the Company, and this Security is
issued subject to the provisions of the Indenture with respect thereto. Each
Holder of this Security, by accepting the same, (a) agrees to and shall be bound
by such provisions, (b) authorizes and directs the Trustee on his behalf to take
such action as may be necessary or appropriate to effectuate the subordination
so provided and (c) appoints the Trustee his attorney-in-fact for any and all
such purposes.

                  [If the Securities are Floating or Adjustable Rate
Securities with respect to which the principal of or any


                                      -20-
<PAGE>   33
premium or interest may be determined with reference to an index, insert the
text of the Floating or Adjustable Rate Provision.]

                  [If the Security is not to bear interest prior to Maturity,
insert -- The principal of this Security shall not bear interest except in the
case of a default in payment of principal upon acceleration, upon redemption or
at Stated Maturity and in such case the overdue principal of this Security shall
bear interest at the rate of ....% per annum (to the extent that the payment of
such interest shall be legally enforceable), which shall accrue from the date of
such default in payment to the date payment of such principal has been made or
duly provided for. Interest on any overdue principal shall be payable on demand.
Any such interest on any overdue principal that is not so paid on demand shall
bear interest at the rate of ......% per annum (to the extent that the payment
of such interest shall be legally enforceable), which shall accrue from the date
of such demand for payment to the date payment of such interest has been made or
duly provided for, and such interest shall also be payable on demand.]

                  Payment of the principal of (and premium, if any) and [if
applicable, insert -- any such] interest on this Security will be made at the
office or agency of the Company maintained for that purpose in ............, in
such coin or currency [of the United States of America] [if the Security is
denominated in a currency other than U.S. dollars, specify other currency or
currency unit in which payment of the principal of and any premium or interest
may be made] as at the time of payment is legal tender for payment of public and
private debts [if applicable, insert -- ; provided, however, that at the option
of the Company payment of interest may be made by check mailed to the address of
the Person entitled thereto as such address shall appear in the Security
Register].

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

                  Unless the certificate of authentication hereon has been
executed by the Trustee referred to on the reverse hereof by manual signature,
this Security shall not be


                                      -21-
<PAGE>   34
entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

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

Dated:

                                                  [AETNA LIFE AND CASUALTY
                                                    COMPANY]

                                                  [AETNA SERVICES, INC.]


                                                  By______________________
[Seal]
Attest:

 ...........................



Section 203.      Form of Reverse of Security.

                  This Security is one of a duly authorized issue of securities
of the Company (herein called the "Securities"), issued and to be issued in one
or more series under an Indenture, dated as of July 1, 1996 (herein called the
"Indenture"), among the Company, as Issuer, Aetna Inc., as Guarantor (herein
called the "Guarantor") and ..................., as Trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), to
which Indenture and all indentures supplemental thereto reference is hereby made
for a statement of the respective rights, limitations of rights, duties and
immunities thereunder of the Company, the Guarantor, the Trustee and the Holders
of the Securities and of the terms upon which the Securities are, and are to be,
authenticated and delivered. This Security is one of the series designated on
the face hereof[, limited in aggregate principal amount to [$]...........].

                  [If applicable, insert -- The Securities of this series are
subject to redemption upon not less than 30 days' nor more than 60 days' notice
by mail, [if applicable, insert -- (1) on ........... in any year commencing
with the year ...... and ending with the year ...... through operation of the
sinking fund for this series at a Redemption Price equal to 100% of the
principal amount, and (2)] at any time [on or after ............], as a whole or
in part, at the election of the Company, at the following Redemption


                                      -22-
<PAGE>   35
Prices (expressed as percentages of the principal amount):
If redeemed [on or before ..............., ....%, and if
redeemed] during the 12-month period beginning .............
of the years indicated,

<TABLE>
<CAPTION>
                  Redemption                                Redemption
Year                 Price                   Year              Price
- ----                 -----                   ----              -----
<S>               <C>                        <C>            <C>











</TABLE>


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

                  [If applicable, insert -- The Securities of this series are
subject to redemption upon not less than 30 days' nor more than 60 days' notice
by mail, (1) on ............ in any year commencing with the year .... and
ending with the year .... through operation of the sinking fund for this series
at the Redemption Prices for redemption through operation of the sinking fund
(expressed as percentages of the principal amount) set forth in the table below,
and (2) at any time [on or after ............], as a whole or in part, at the
election of the Company, at the Redemption Prices for redemption otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below: If redeemed during the 12-month period
beginning ............ of the years indicated,


                                      -23-
<PAGE>   36
<TABLE>
<CAPTION>
                        Redemption Price
                         For Redemption               Redemption Price For
                        Through Operation             Redemption Otherwise
                             of the                  Than Through Operation
Year                      Sinking Fund                 of the Sinking Fund
- ----                    -----------------            ----------------------
<S>                     <C>                          <C>










</TABLE>


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

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

                  [If the Security is subject to redemption, insert -- In the
event of redemption of this Security in part only, a new Security or Securities
of this series and of like tenor for the unredeemed portion hereof will be
issued in the name of the Holder hereof upon the cancellation hereof.]

                  The Indenture contains provisions for defeasance at any time
of (1) the entire indebtedness of this Security or (2) certain restrictive
covenants and Events of Default


                                      -24-
<PAGE>   37
with respect to this Security, in each case upon compliance with certain
conditions set forth in the Indenture.

                  [If the Security is not an Original Issue Discount Security,
insert -- If an Event of Default with respect to Securities of this series shall
occur and be continuing, the principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture.]

                  [If the Security is an Original Issue Discount Security,
insert -- If an Event of Default with respect to Securities of this series shall
occur and be continuing, an amount of principal of the Securities of this series
may be declared due and payable in the manner and with the effect provided in
the Indenture. Such amount shall be equal to --insert formula for determining
the amount. Upon payment (i) of the amount of principal so declared due and
payable and (ii) of interest on any overdue principal and overdue interest (in
each case to the extent that the payment of such interest shall be legally
enforceable), all of the Company's obligations in respect of the payment of the
principal of and interest, if any, on the Securities of this series shall
terminate.]

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

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

                                      -25-
<PAGE>   38
interest on this Security at the times, place and [rate-rates], and in the coin
or currency, herein prescribed.

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

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

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

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

                  The Indenture provides that the Company and the Guarantor, at
the Company's option, (a) will be discharged from any and all obligations in
respect of the Securities (except for certain obligations to register the
transfer or exchange of Securities, replace stolen, lost or mutilated
Securities, maintain paying agencies and hold moneys for payment in trust) or
(b) need not comply with certain restrictive covenants of the Indenture, in each
case if the Company or the Guarantor deposits, in trust, with the Trustee money
or U.S. Government Obligations (or Foreign


                                      -26-
<PAGE>   39
Government Obligations if the Securities are denominated in a foreign currency
or currencies) which through the payment of interest thereon and principal
thereof in accordance with their terms will provide money, in an amount
sufficient to pay all the principal (including any mandatory sinking fund
payments) of, and (premium, if any) and interest on, the Securities on the dates
such payments are due in accordance with the terms of such Securities and
Guarantees, and certain other conditions are satisfied.

                  No recourse shall be had for the payment of the principal of
(and premium, if any) or interest on this Security, or for any claim based
hereon, or otherwise in respect hereof or of the Guarantee endorsed hereon, or
based on or in respect of the Indenture or any indenture supplemental thereto,
against any incorporator, stockholder, officer or director, as such, past,
present or future, of the Company or of any successor corporation, or of the
Guarantor or of any successor corporation, whether by virtue of any
constitution, statute or rule of law, or by the enforcement of any assessment or
penalty or otherwise, all such liability being, by the acceptance hereof and as
part of the consideration for the issue hereof, expressly waived and released.

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

Section 204.      Form of Legend for Global Securities.

                  Every Global Security authenticated and delivered hereunder
shall bear a legend in substantially the following form or such other legends as
may be required:

         This Security is a Global Security within the meaning of the Indenture
         hereinafter referred to and is registered in the name of a Depositary
         or a nominee thereof. This Security may not be transferred to, or
         registered or exchanged for Securities registered in the name of, any
         Person other than the Depositary or a nominee thereof and no such
         transfer may be registered, except in the limited circumstances
         described in the Indenture. Every Security authenticated and delivered
         upon registration of transfer of, or in exchange for or in lieu of,
         this Security shall be a Global Security subject to the foregoing,
         except in such limited circumstances.


                                      -27-
<PAGE>   40
Section 205.      Form of Trustee's Certificate of
                  Authentication.

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

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


                                       .............................,
                                                  As Trustee


                                       By...........................
                                             Authorized Officer


Section 206.      Form of Guarantee.

                  Guarantees to be endorsed on the Securities shall, subject to
Section 201, be in substantially the form set forth below; words enclosed in
brackets shall be inserted, if applicable:

                                    GUARANTEE
                                       OF
                                   AETNA INC.

                  Aetna Inc., a Connecticut corporation (herein called the
"Guarantor", which term includes any successor corporation under the Indenture
referred to in the Security upon which this Guarantee is endorsed), for value
received, hereby unconditionally guarantees to the Holder of the Security upon
which this Guarantee is endorsed the due and punctual payment of the principal
of, premium, if any, and interest on said Security [and the due and punctual
payment of the sinking fund payments provided for herein], when and as the same
shall become due and payable, whether at the Stated Maturity or upon declaration
of acceleration, call for redemption or otherwise, according to the terms
thereof and of the Indenture referred to therein. In case of the failure of
[Aetna Life and Casualty Company] [Aetna Services, Inc.], a Connecticut
corporation (herein called the "Company", which term includes any successor
corporation under such Indenture) punctually to make any such payment of
principal, premium or interest [or sinking fund payment], the Guarantor hereby
agrees to pay or to cause any such payment to be made punctually when and as the
same shall become due and payable, whether at Stated Maturity or upon
declaration of acceleration, call for redemption or


                                      -28-
<PAGE>   41
otherwise, and as if such payment were made by the Company. The Guarantor hereby
agrees that its obligations hereunder shall be as if it were principal debtor
and not merely surety, and shall be absolute and unconditional, irrespective of,
and shall be unaffected by, the validity, legality or enforceability of said
Security or the Indenture, or the absence of any action to enforce the same, or
any waiver, modification, indulgence or consent granted to the Company with
respect thereto, by the Holder of said Security or by the Trustee, the recovery
of any judgment against the Company or any action to enforce the same or any
other circumstance that might otherwise constitute a legal or equitable
discharge or defense of a surety or guarantor; provided, however, that
notwithstanding the foregoing, no such waiver, modification or indulgence shall,
without the consent of the Guarantor, increase the principal amount of said
Security or the interest rate thereon or increase any premium payable upon
redemption thereof. The Guarantor hereby waives diligence, presentment, demand
of payment, filing of claims with a court in the event of bankruptcy of the
Company, any right of set-off or to counterclaim, any right to require a
proceeding first against the Company, protest or notice with respect to said
Security or the indebtedness evidenced thereby [or with respect to any sinking
fund payment required under said Security] and all demands whatsoever, and
covenants that this Guarantee will not be discharged except by payment in full
of the principal of, and premium, if any, and interest on said Security.

                  The Guarantor shall be subrogated to all rights of the Holder
against the Company in respect of any amounts paid to such Holder by the
Guarantor pursuant to the provisions of this Guarantee; provided, however, that
the Guarantor shall not, without the consent of all Holders of all outstanding
Securities of this series issued under the Indenture, be entitled to enforce, or
to receive, any payments arising out of or based upon such right of subrogation
until the principal of, premium, if any, and interest then due and payable on
all Securities of the same series issued under the Indenture shall have been
irrevocably paid in full in accordance with the terms of such Securities.

                  This Guarantee is a guarantee of payment when due and not of
collection. This Guarantee shall continue to be effective, or be reinstated, as
the case may be, in respect of said Security if at any time payment, or any part
thereof, of said Security is rescinded or must otherwise be restored or returned
by the Holder of said Security or any trustee for said Holder upon the
insolvency, bankruptcy, dissolution, liquidation or reorganization of the
Company or

                                      -29-
<PAGE>   42
any other entity, or upon or as a result of the appointment of a receiver,
intervenor or conservator of, or trustee or similar officer for, the Company or
any other entity or any substantial part of their respective property, or
otherwise, all as though such payments had not been made.

                  No reference herein to such Indenture and no provision of this
Guarantee or of such Indenture shall alter or impair the guarantee of the
Guarantor, which is absolute and unconditional, of the due and punctual payment
of the principal of, and premium, if any, and interest on the Security upon
which this Guarantee is endorsed at the times, place and rate, and in the cash
or currency prescribed herein.

                  The obligations of the Guarantor under this Guarantee are, to
the extent provided in the Indenture, subordinate and subject in right of
payment to the prior payment in full of all Senior Debt of the Guarantor, and
this Guarantee is issued subject to the provisions of the Indenture with respect
thereto. Each Holder of the Security on which this Guarantee is endorsed, by
accepting the same, (a) agrees to and shall be bound by such provisions, (b)
authorizes and directs the Trustee on his behalf to take such action as may be
necessary or appropriate to effectuate the subordination so provided and (c)
appoints the Trustee his attorney-in-fact for any and all such purposes.

                  This Guarantee shall be governed by and construed in
accordance with the laws of the State of New York, but without regard to
principles of conflicts of laws.

                  This Guarantee shall not be valid or become obligatory for any
purpose until the certificate of authentication on said Security shall have been
manually signed by or on behalf of the Trustee under such Indenture.

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

                  IN WITNESS WHEREOF, Aetna Inc. has caused the
execution hereof in its corporate name by its duly
authorized officers.


                                                     AETNA INC.


                                                     By__________________


                                      -30-
<PAGE>   43
         [Seal]

         Attest:



         _______________________________
         [Assistant] Corporate Secretary


                                  ARTICLE THREE

                                 The Securities

Section 301.      Amount Unlimited; Issuable in Series.

                  The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is unlimited.

                  The Securities may be issued in one or more series. There
shall be established in or pursuant to a Board Resolutions of the Company and
the Guarantor, as appropriate, and set forth in Officers' Certificates of the
Company and the Guarantor, as appropriate, or established in one or more
indentures supplemental hereto, prior to the issuance of Securities of any
series,

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

                  (2) any limit upon the aggregate principal amount of the
         Securities of the series which may be authenticated and delivered under
         this Indenture (except for Securities authenticated and delivered upon
         registration of transfer of, or in exchange for, or in lieu of, other
         Securities of the series pursuant to Sections 304, 305, 306, 906 or
         1107 and except for any Securities which, pursuant to Section 303, are
         deemed never to have been authenticated and delivered hereunder);

                  (3) the Person to whom any interest on a Security of the
         series shall be payable, if other than the Person in whose name that
         Security (or one or more Predecessor Securities) is registered at the
         close of business on the Regular Record Date for such interest;


                                      -31-
<PAGE>   44
                  (4) the date or dates on which the principal of the Securities
         of the series is payable;

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

                  (6) whether the Securities of the series would be secured
         pursuant to Section 901(6);

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

                  (8) if applicable, the period or periods within which, the
         price or prices at which (including premium, if any) and the terms and
         conditions upon which Securities of the series may or are required to
         be redeemed or prepaid, in whole or in part, at the option of the
         Company or the Guarantor pursuant to a sinking fund or otherwise;

                  (9) the obligation, if any, of the Company to redeem or
         purchase Securities of the series pursuant to any sinking fund or
         analogous provisions or at the option of a Holder thereof and the
         period or periods within which, the price or prices at which and the
         terms and conditions upon which Securities of the series shall be
         redeemed or purchased, in whole or in part, pursuant to such
         obligation;

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

                  (11) if other than such coin or currency of the United States
         of America as at the time is legal tender for payment of


                                      -32-
<PAGE>   45
         public or private debts, the currency or currencies, including
         composite currencies, or currency units in which payment of the
         principal of and any premium and interest on any Securities of the
         series shall be payable and the manner of determining the equivalent
         thereof in the currency of the United States of America for purposes of
         the definition of "Outstanding" in Section 101;

                  (12) if the amount of payments of principal of or any premium
         or interest on any Securities of the series may be determined with
         reference to one or more indices, the manner in which such amounts
         shall be determined;

                  (13) if the principal of or any premium or interest on any
         Securities of the series is to be payable, at the election of the
         Company or a Holder thereof, in one or more currencies, including
         composite currencies, or currency units other than that or those in
         which the Securities are stated to be payable, the currency,
         currencies, including composite currencies, or currency units in which
         payment of the principal of and any premium and interest on Securities
         of such series as to which such election is made shall be payable, and
         the periods within which and the terms and conditions upon which such
         election is to be made;

                  (14) if other than the principal amount thereof, the portion
         of the principal amount of Securities of the series which shall be
         payable upon declaration of acceleration of the Maturity thereof
         pursuant to Section 502 or provable under any applicable federal or
         state bankruptcy or similar law pursuant to Section 503;

                  (15) if applicable, that the Securities of the series shall be
         issuable in whole or in part in the form of one or more Global
         Securities and, in such case, the Depositary or Depositaries for such
         Global Security or Global Securities and any circumstance other than
         those set forth in Section 305 in which any such Global Security may be
         transferred to, and registered and exchanged for


                                      -33-
<PAGE>   46
         Securities registered in the name of, a Person other than the
         Depositary for such Global Security or a nominee thereof and in which
         any such transfer may be registered;

                  (16) any other event or events of default applicable with
         respect to the Securities of the series in addition to those provided
         in Section 501(1) through (7);

                  (17) any other covenant or warranty included for the benefit
         of Securities of the series in addition to (and not inconsistent with)
         those included in this Indenture for the benefit of Securities of all
         series, or any other covenant or warranty included for the benefit of
         Securities of the series in lieu of any covenant or warranty included
         in this Indenture for the benefit of Securities of all series, or any
         provision that any covenant or warranty included in this Indenture for
         the benefit of Securities of all series shall not be for the benefit of
         Securities of the series, or any combination of such covenants,
         warranties or provisions;

                  (18) if other than as set forth in Section 206, the Guarantee
         of the Securities of such series pursuant to Article Fifteen hereof;

                  (19) any restriction or condition on the transferability of
         the Securities of the series;

                  (20) any authenticating or paying agents, registrars or any
         other agents with respect to the Securities of the series; and

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

                  All Securities of any one series shall be substantially
identical except as to denomination and number and except as may otherwise be
provided in or pursuant to the Board Resolutions referred to above and set forth
in such Officers' Certificate or in any such indenture supplemental hereto.


                                      -34-
<PAGE>   47
                  If any of the terms of the series are established by action
taken pursuant to a Board Resolution of the Company or the Guarantor, a copy of
such action shall be delivered to the Trustee.

Section 302.      Denominations.

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

Section 303.      Execution, Authentication, Delivery and
                  Dating.

                  The Securities shall be executed on behalf of the Company by
its Chairman, its President, a Vice Chairman, any Vice President, its Treasurer
or Assistant Treasurer, under its corporate seal reproduced thereon attested by
its Corporate Secretary or one of its Assistant Corporate Secretaries. The
signature of any of these officers on the Securities may be manual or facsimile.

                  The Guarantees shall be executed on behalf of the Guarantor by
its Chairman, its President, a Vice Chairman, any Vice President, its Treasurer
or Assistant Treasurer, under its corporate seal reproduced thereon and attested
by its Corporate Secretary or one of its Assistant Corporate Secretaries. The
signature of any of these officers on the Guarantees may be manual or facsimile.

                  The seal of the Company or the Guarantor, as the case may be,
may be in the form of a facsimile thereof and may be impressed, affixed,
imprinted or otherwise reproduced on the Securities. Securities bearing the
manual or facsimile signatures of individuals who were at any time the proper
officers of the Company or of the Guarantor shall bind the Company or the
Guarantor, as the case may be, notwithstanding that such individuals or any of
them have ceased to hold such offices prior to the authentication and delivery
of such Securities or did not hold such offices at the date of such Securities.
Minor typographical and other minor errors in the text of any Security or the
Guarantee endorsed thereon or minor defects in the seal or facsimile signature
on any Security or the Guarantee endorsed thereon shall not affect the validity
or enforceability of such Security or such Guaranty if such Security has been
duly authenticated and delivered by the Trustee.


                                      -35-
<PAGE>   48
                  At any time and from time to time after the execution and
delivery of this Indenture, the Company may deliver Securities of any series
executed by the Company and having endorsed thereon Guarantees executed by the
Guarantor to the Trustee for authentication, together with a Company Order of
the Company for the authentication and delivery of such Securities, and the
Trustee in accordance with such Company Order shall authenticate and deliver
such Securities having such Guarantees endorsed thereon. If the form or terms of
the Securities of the series or the form of Guarantees endorsed thereon have
been established in or pursuant to one or more Board Resolutions as permitted by
Sections 201 and 301, in authenticating such Securities, and accepting the
additional responsibilities under this Indenture in relation to such Securities
and Guarantees endorsed thereon, the Trustee shall be entitled to receive, and
(subject to Section 601) shall be fully protected in relying upon, an Opinion of
Counsel stating,

                  (a) if the form or forms of such Securities and the applicable
         Guarantees have been established by or pursuant to Board Resolution as
         permitted by Section 201, that such form or forms have been established
         in conformity with the provisions of this Indenture;

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

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

                  (d) that such Guarantees, when the Securities on which such
         Guarantees are

                                      -36-
<PAGE>   49
         endorsed are authenticated and delivered by the Trustee and issued by
         the Company in the manner and subject to any conditions specified in
         such Opinion of Counsel, will constitute valid and legally binding
         obligations of the Guarantor, enforceable in accordance with their
         terms, subject to bankruptcy, insolvency, reorganization and other laws
         of general applicability relating to or affecting the enforcement of
         creditors' rights and to general equity principles.

                  The Trustee shall have the right to decline to authenticate
and deliver any Securities under this Section if the Trustee, being advised by
counsel, determines that such action may not lawfully be taken or if the Trustee
in good faith by its board of directors, executive committee, or a trust
committee of directors or responsible officers of the Trustee shall determine
that such action would expose the Trustee to personal liability to existing
Holders of Securities.

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

                  Each Security and the applicable Guarantee shall be dated the
date of its authentication.

                  No Security or Guarantee endorsed thereon shall be entitled to
any benefit under this Indenture or be valid or obligatory for any purpose
unless there appears on such Security a certificate of authentication
substantially in the form provided for herein executed by the Trustee by manual
signature, and such certificate upon any Security shall be conclusive evidence,
and the only evidence, that such Security has been duly authenticated and
delivered hereunder and that such Security or Guarantee is entitled to the
benefits of this Indenture. Notwithstanding the foregoing, if any Security shall
have been authenticated and delivered hereunder but never issued and sold by the
Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 309, for all purposes of this Indenture such
Security and the Guarantee

                                      -37-
<PAGE>   50
endorsed thereon shall be deemed never to have been authenticated and delivered
hereunder and shall never be entitled to the benefits of this Indenture.

Section 304.      Temporary Securities.

                  Pending the preparation of definitive Securities of any
series, the Company may execute, and upon Company Order the Trustee shall
authenticate and deliver, temporary Securities substantially of the tenor of the
definitive Securities in lieu of which they are issued and having endorsed
thereon Guarantees of the Guarantor substantially of the tenor of definitive
Guarantees, which Securities and Guarantees may be printed, lithographed,
typewritten, mimeographed or otherwise produced, in any authorized denomination
and with such appropriate insertions, omissions, substitutions and other
variations as the officers executing such Securities or such Guarantees may
determine, as evidenced by their execution of such Securities and such
Guarantees.

                  If temporary Securities of any series are issued, the Company
will cause definitive Securities of that series to be prepared without
unreasonable delay. After the preparation of definitive Securities of such
series, the temporary Securities of such series shall be exchangeable for
definitive Securities of such series upon surrender of the temporary Securities
of such series at the office or agency of the Company in a Place of Payment for
that series, without charge to the Holder. Upon surrender for cancellation of
any one or more temporary Securities of any series, the Company shall execute
and the Trustee shall authenticate and deliver in exchange therefor one or more
definitive Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor which have endorsed thereon
Guarantees duly executed by the Guarantor. Until so exchanged the temporary
Securities of any series shall in all respects be entitled to the same benefits
under this Indenture as definitive Securities of such series and tenor.

Section 305.      Registration, Registration of
                  Transfer and Exchange.

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

                                      -38-
<PAGE>   51
registration of Securities and of transfers of Securities. The Trustee is hereby
appointed "Security Registrar" for the purpose of registering Securities and
transfers of Securities as herein provided.

                  Upon surrender for registration of transfer of any Security of
any series at the office or agency in a Place of Payment for that series, the
Company shall execute, and the Trustee shall authenticate and deliver, in the
name of the designated transferee or transferees, one or more new Securities of
the same series, of any authorized denominations and of a like aggregate
principal amount and tenor which have endorsed thereon a Guarantee duly executed
by the Guarantor.

                  At the option of the Holder, Securities of any series may be
exchanged for other Securities of the same series, of any authorized
denominations and of a like aggregate principal amount and tenor, each such
Security having endorsed thereon a Guarantee duly executed by the Guarantor upon
surrender of the Securities to be exchanged at such office or agency. Whenever
any Securities are so surrendered for exchange, the Company shall execute, and
the Trustee shall authenticate and deliver, the Securities which the Holder
making the exchange is entitled to receive.

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

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

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

                  Unless otherwise required by the rules of any stock exchange
on which the Securities are listed or of any

                                      -39-
<PAGE>   52
quotation system through which the Securities are traded, neither the Company
nor the Trustee shall be required (i) to issue, register the transfer of or
exchange Securities of any series during a period beginning at the opening of
business 15 days before the day of the mailing of a notice of redemption of
Securities of that series selected for redemption under Section 1103 and ending
at the close of business on the day of such mailing, or (ii) to register the
transfer of or exchange any Security so selected for redemption in whole or in
part, except the unredeemed portion of any Security being redeemed in part.

                  Notwithstanding any other provision in this Indenture, no
Global Security may be transferred to, or registered or exchanged for Securities
registered in the name of, any Person other than the Depositary for such Global
Security or any nominee thereof, and no such transfer may be registered, unless
(1) such Depositary (A) notifies the Company and the Trustee that it is
unwilling or unable to continue as Depositary for such Global Security or (B)
ceases to be a clearing agency registered under the Exchange Act, (2) the
Company executes and delivers to the Trustee a Company Order that such Global
Security shall be so transferable, registrable and exchangeable, and such
transfers shall be registrable, (3) there shall have occurred and be continuing
an Event of Default with respect to the Securities evidenced by such Global
Security or (4) there shall exist such other circumstances, if any, as have been
specified for this purpose as contemplated by Section 301. Notwithstanding any
other provision in this Indenture, a Global Security to which the restriction
set forth in the preceding sentence shall have ceased to apply may be
transferred only to, and may be registered and exchanged for Securities
registered only in the name or names of, such Person or Persons as the
Depositary for such Global Security shall have directed and no transfer thereof
other than such a transfer may be registered.

                  Every Security authenticated and delivered upon registration
of transfer of, or in exchange for or in lieu of, a Global Security to which the
restriction set forth in the first sentence of the preceding paragraph shall
apply, whether pursuant to this Section, Section 304, 306, 906 or 1107 or
otherwise, shall be authenticated and delivered in the form of, and shall be, a
Global Security.

Section 306.      Mutilated, Destroyed, Lost and Stolen
                  Securities.

                  If there shall be delivered to the Company and the Trustee (i)
a mutilated Security, or (ii) evidence to their


                                      -40-
<PAGE>   53
satisfaction of the destruction, loss or theft of any Security and in either
case such security or indemnity as may be required by either of them to save
each of them and any agent of either of them harmless, then, in the absence of
notice to the Company or the Trustee that such Security has been acquired by a
bona fide purchaser, the Company shall execute and the Trustee shall
authenticate and deliver, in lieu of any such mutilated, destroyed, lost or
stolen Security, a new Security of the same series and of like tenor and
principal amount having endorsed thereon a Guarantee duly executed by the
Guarantor, and bearing a number not contemporaneously outstanding.

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

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

                  Every new Security of any series issued pursuant to this
Section in lieu of any destroyed, lost or stolen Security shall constitute an
original additional contractual obligation of the Company and the Guarantor,
whether or not the destroyed, lost or stolen Security shall be at any time
enforceable by anyone, and shall be entitled to all the benefits of this
Indenture equally and proportionately with any and all other Securities of that
series duly issued hereunder.

                  The provisions of this Section are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Securities.

Section 307.      Payment of Interest; Interest Rights
                  Preserved.

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


                                      -41-
<PAGE>   54
                  Any interest on any Security of any series which is payable,
but is not punctually paid or duly provided for, on any Interest Payment Date
(herein called "Defaulted Interest") shall forthwith cease to be payable to the
Holder on the relevant Regular Record Date by virtue of having been such Holder,
and such Defaulted Interest may be paid by the Company, at its election in each
case, as provided in Clause (1) or (2) below:

                  (1) The Company may elect to make payment of any Defaulted
         Interest to the Persons in whose names the Securities of such series
         (or their respective Predecessor Securities) are registered at the
         close of business on a Special Record Date for the payment of such
         Defaulted Interest, which shall be fixed in the following manner. The
         Company shall notify the Trustee in writing of the amount of Defaulted
         Interest proposed to be paid on each Security of such series and the
         date of the proposed payment, and at the same time the Company shall
         deposit with the Trustee an amount of money equal to the aggregate
         amount proposed to be paid in respect of such Defaulted Interest or
         shall make arrangements satisfactory to the Trustee for such deposit
         prior to the date of the proposed payment, such money when deposited to
         be held in trust for the benefit of the Persons entitled to such
         Defaulted Interest as in this Clause provided. Thereupon the Trustee
         shall fix a Special Record Date for the payment of such Defaulted
         Interest which shall be not more than 15 days and not less than 10 days
         prior to the date of the proposed payment and not less than 15 days
         after the receipt by the Trustee of the notice of the proposed payment.
         The Trustee shall promptly notify the Company of such Special Record
         Date and, in the name and at the expense of the Company, shall cause
         notice of the proposed payment of such Defaulted Interest and the
         Special Record Date therefor to be mailed, first-class postage prepaid,
         to each Holder of Securities of such series at its address as it
         appears in the Security Register, not less than 10 days prior to such
         Special Record Date. Notice of the proposed payment of such Defaulted
         Interest and the Special Record Date therefor having been so mailed,
         such Defaulted Interest shall be paid to the Persons in


                                      -42-
<PAGE>   55
         whose names the Securities of such series (or their respective
         Predecessor Securities) are registered at the close of business on such
         Special Record Date and shall no longer be payable pursuant to the
         following Clause (2).

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

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

Section 308.      Persons Deemed Owners.

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

                  No holder of any beneficial interest in any Global Security
held on its behalf by a Depositary shall have any rights under this Indenture
with respect to such Global Security, and such Depositary may be treated by the
Company, the Guarantor, the Trustee, and any agent of the Company, the Guarantor
or the Trustee as the owner of such Global Security for all purposes whatsoever.
Notwithstanding the foregoing, nothing herein shall impair, as between a
Depositary and such holders of beneficial interests, the operation of customary
practices governing the exercise of the rights of the Depositary as Holder of
any Security.


                                      -43-
<PAGE>   56
Section 309.      Cancellation.

                  All Securities surrendered for payment, redemption,
registration of transfer or exchange or for credit against any sinking fund
payment shall, if surrendered to any Person other than the Trustee, be delivered
to the Trustee and shall be promptly canceled by it. The Company or the
Guarantor may at any time deliver to the Trustee for cancellation any Securities
previously authenticated and delivered hereunder which the Company or the
Guarantor may have acquired in any manner whatsoever, and may deliver to the
Trustee (or to any other Person for delivery to the Trustee) for cancellation
any Securities previously authenticated hereunder which the Company has not
issued and sold, and all Securities so delivered shall be promptly cancelled by
the Trustee. No Securities shall be authenticated in lieu of or in exchange for
any Securities cancelled as provided in this Section, except as expressly
permitted by this Indenture. All cancelled Securities held by the Trustee shall
be disposed of as directed by a Company Order. Acquisition by the Company or the
Guarantor of any Security shall not operate as a redemption or satisfaction of
the indebtedness represented by such Security unless and until the same is
delivered to the Trustee for cancellation.

Section 310.      Computation of Interest.

                  Except as otherwise specified as contemplated by Section 301
for Securities of any series, interest on the Securities of each series shall be
computed on the basis of a 360-day year of twelve 30-day months and, for any
period shorter than a full monthly period, shall be computed on the basis of the
actual number of days elapsed in such period.


                                  ARTICLE FOUR

                           Satisfaction and Discharge

Section 401.      Satisfaction and Discharge of
                  Indenture.

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


                                      -44-
<PAGE>   57
                  (1)  either

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

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

                       (i) have become due and payable, or

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

                     (iii) are to be called for redemption within one year
                  under arrangements satisfactory to the Trustee for the giving
                  of notice of redemption by the Trustee in the name, and at the
                  expense, of the Company,

         and the Company or the Guarantor, in the case of (i), (ii) or (iii)
         above, has deposited or caused to be deposited with the Trustee in
         trust for the purpose (A) money (either in United States dollars or
         such other currency or currency unit in which the Securities of any
         series may be payable) in an amount, or (B) U.S. Government Obligations
         (or Foreign Government Obligations if the Securities are denominated in
         a foreign currency or currencies) that through the scheduled payment of
         principal and interest in respect thereof in accordance with their
         terms will provide, not later than one day before the due date of any
         payment, money in an amount, or (C) a combination thereof, sufficient
         to pay and discharge the entire indebtedness on

                   
                                      -45-
<PAGE>   58
         such Securities of such series not theretofore delivered to the Trustee
         for cancellation, for principal of (and premium, if any) and interest
         to the date of such deposit (in the case of Securities of such series
         which have become due and payable) or to the Stated Maturity or
         Redemption Date, as the case may be;

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

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

                  In the event there are Securities of two or more series
outstanding hereunder, the Trustee shall be required to execute an instrument
acknowledging satisfaction and discharge of this Indenture only if requested to
do so with respect to Securities of a particular series as to which it is
Trustee and if the other conditions thereto are met. In the event that there are
two or more Trustees hereunder, then the effectiveness of any such instrument
shall be conditioned upon receipt of such instruments from all Trustees
hereunder.

                  Notwithstanding the satisfaction and discharge of this
Indenture with respect to a particular series, the obligations of the Company
and the Guarantor to the Trustee under Section 607, the obligations of the
Trustee to any Authenticating Agent under Section 614 and, if money shall have
been deposited with the Trustee pursuant to subclause (B) of Clause (1) of this
Section, the obligations of the Trustee under Section 402 and the last paragraph
of Section 1003 shall survive until there are no Securities Outstanding with
respect to a particular series and the obligations of the Company, the Guarantor
and the Trustee with respect to all other series of Securities shall survive.

Section 402.      Application of Trust Fund.

                  Subject to provisions of the last paragraph of Section 1003,
all amounts deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it,


                                      -46-
<PAGE>   59
in accordance with the provisions of the Securities and this Indenture, to the
payment, either directly or through any Paying Agent (including the Company or
the Guarantor acting as its own Paying Agent) as the Trustee may determine, to
the Persons entitled thereto, of the principal and any premium and interest for
whose payment such funds have been deposited with the Trustee. Money deposited
pursuant to this Section not in violation of this Indenture shall not be subject
to claims of the holders of Senior Debt of the Company under Article Fourteen or
of the holders of Senior Debt of the Guarantor under Article Sixteen.


                                  ARTICLE FIVE

                                    Remedies

Section 501.      Events of Default.

                  "Event of Default" whenever used with respect to Securities of
a series means any one of the following events and such other events as may be
established with respect to the Securities of such series as contemplated by
Section 301 hereof (whether or not it shall be occasioned by the provisions of
Article Fourteen or Article Sixteen):

                  (1) Default in the payment of any instalment of interest upon
         any of the Securities of such series as and when the same shall become
         due and payable, and continuance of such default for a period of 30
         days; or

                  (2) Default in the payment of the principal of or premium, if
         any, on any of the Securities of such series as and when the same shall
         become due and payable either at maturity, upon redemption, by
         declaration or otherwise; or

                  (3) Default in the making of any sinking fund payment, whether
         mandatory or optional, as and when the same shall become due and
         payable by the terms of the Securities of such series; or

                  (4) Failure on the part of the Company or the Guarantor duly
         to observe or perform in any material respect any other of the
         covenants or agreements on the part of the Company or the Guarantor
         contained in this Indenture (other than those set forth exclusively in
         the terms of any other particular series of Securities established as
         contemplated by this Indenture for the benefit


                                      -47-
<PAGE>   60
         of such other series) and written notice of such failure, stating that
         such notice is a "Notice of Default" hereunder, and requiring the
         Company or the Guarantor, as the case may be, to remedy the same, shall
         have been given by registered or certified mail, return receipt
         requested, to the Company and the Guarantor by the Trustee, or to the
         Company, the Guarantor and the Trustee by the holders of at least 25%
         in aggregate principal amount of the Outstanding Securities of that
         series, and such failure shall have continued unremedied for a period
         of 90 days after the date of the Company's and the Guarantor's receipt
         of such Notice of Default; or

                  (5) An event of default, as defined in any indenture or
         instrument evidencing or under which the Company, the Guarantor or any
         Principal Subsidiary shall have outstanding indebtedness for borrowed
         money in a principal amount in excess of $50,000,000, shall happen and
         be continuing and such indebtedness shall have been accelerated so that
         the same shall be or become due and payable prior to the date on which
         the same would otherwise have become due and payable (other than
         acceleration of Non-Recourse Debt which does not exceed in the
         aggregate 4% of the Guarantor's total shareholders' equity, as set
         forth in the most recently published audited consolidated balance sheet
         of the Guarantor) or the Company, the Guarantor or any Principal
         Subsidiary shall default in the payment at final maturity of
         outstanding indebtedness for borrowed money in a principal amount in
         excess of $50,000,000 (other than default in payment at final maturity
         of Non-Recourse Debt which does not exceed in the aggregate 4% of the
         Guarantor's total shareholders' equity as set forth in the most
         recently published audited consolidated balance sheet of the
         Guarantor), and such acceleration or default at maturity shall not be
         waived, rescinded or annulled within 30 days after written notice
         thereof, stating that such notice is a "Notice of Default" hereunder,
         shall have been given to the Company and the Guarantor by the Trustee
         (if such event be known to it), or to the Company, the Guarantor and
         the Trustee by the holders of at least 25% in aggregate principal
         amount of the Outstanding Securities of that series; provided, however,
         that if such acceleration under such indenture or instrument or default
         at maturity


                                      -48-
<PAGE>   61
         shall be remedied or cured by the Company, the Guarantor or Principal
         Subsidiary, or waived, rescinded or annulled by the requisite holders
         of such indebtedness, then the Event of Default hereunder by reason
         thereof shall be deemed likewise to have been thereupon remedied, cured
         or waived without further action upon the part of either the Trustee or
         any of the Holders; and provided further, that, subject to the
         provisions of Sections 601 and 602, the Trustee shall not be charged
         with knowledge of any such default unless written notice thereof shall
         have been given to the Trustee by the Company or the Guarantor, as the
         case may be, by the holder of any such indebtedness or an agent of the
         holder of any such indebtedness, by the trustee then acting under any
         such indenture or other instrument under which such default shall have
         occurred, or by the holders of at least 25% in aggregate principal
         amount of the Outstanding Securities of that series; or

                  (6) A decree or order by a court having jurisdiction in the
         premises shall have been entered adjudging the Company or the Guarantor
         a bankrupt or insolvent, or approving as properly filed a petition
         seeking reorganization, arrangement, adjustment or composition of the
         Company or the Guarantor under any applicable Federal or State
         bankruptcy or similar law, and such decree or order shall have
         continued undischarged and unstayed for a period of 90 days; or a
         decree or order of a court having jurisdiction in the premises for the
         appointment of a receiver, liquidator, trustee, assignee, sequestrator
         or similar official in bankruptcy or insolvency of the Company or the
         Guarantor or of all or substantially all of the Company's or the
         Guarantor's property, or for the winding up or liquidation of the
         Company's or the Guarantor's affairs, shall have been entered, and such
         decree or order shall have continued undischarged and unstayed for a
         period of 90 days; or

                  (7) The Company or the Guarantor shall institute proceedings
         to be adjudicated a voluntary bankrupt, or shall consent to the filing
         of a bankruptcy proceeding against it, or shall file a petition or
         answer or consent seeking reorganization, arrangement, adjustment or
         composition under any applicable Federal or State bankruptcy or similar
         law, or shall consent to the


                                      -49-
<PAGE>   62
         filing of any such petition, or shall consent to the appointment of a
         receiver, liquidator, trustee, assignee, sequestrator or similar
         official in bankruptcy or insolvency of the Company or the Guarantor or
         of all or substantially all of the Company's or the Guarantor's
         property, or shall make an assignment for the benefit of creditors, or
         either the Company or the Guarantor shall admit in writing its
         inability to pay its debts generally as they become due and its
         willingness to be adjudged a bankrupt, or corporate action shall be
         taken by the Company or the Guarantor in furtherance of any of the
         aforesaid purposes.

                  Upon receipt by the Trustee of any Notice of Default pursuant
to this Section 501 with respect to Securities of any series, a record date
shall automatically and without any other action by any Person be set for the
purpose of determining the holders of Outstanding Securities of such series
entitled to join in such Notice of Default, which record date shall be the close
of business on the day the Trustee receives such Notice of Default. The Holders
of Outstanding Securities of such series on such record date (or their duly
appointed agents), and only such Persons, shall be entitled to join in such
Notice of Default, whether or not such Holders remain Holders after such record
date; provided that, unless such Notice of Default shall have become effective
by virtue of Holders of at least 25% in principal amount of Outstanding
Securities of such series on such record date (or their duly appointed agents)
having joined therein on or prior to the 90th day after such record date, such
Notice of Default shall automatically and without any action by any Person be
cancelled and of no further effect. Nothing in this paragraph shall prevent a
Holder (or a duly appointed agent thereof) from giving, before or after the
expiration of such 90-day period, a Notice of Default contrary to or different
from, or, after the expiration of such period, identical to, a Notice of Default
that has been cancelled pursuant to the proviso to the preceding sentence, in
which event a new record date in respect thereof shall be set pursuant to this
paragraph.

Section 502.      Acceleration of Maturity; Rescission
                  and Annulment.

                  If an Event of Default with respect to Securities of any
series at the time Outstanding occurs and is continuing, then in every such case
the Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities of that series may declare the principal amount


                                      -50-
<PAGE>   63
(or, if any of the Securities of that series are Original Issue Discount
Securities, such portion of the principal amount of such Securities as may be
specified in the terms thereof) of all of the Securities of that series to be
due and payable immediately, by a notice in writing to the Company and the
Guarantor (and to the Trustee if given by Holders), and upon any such
declaration such principal amount (or specified amount) and all accrued interest
thereon shall become immediately due and payable.

                  At any time after such a declaration of acceleration with
respect to Securities of any series has been made and before a judgment or
decree for payment of the money due has been obtained by the Trustee as
hereinafter in this Article provided, the Holders of a majority in principal
amount of the Outstanding Securities of that series, by written notice to the
Company, the Guarantor and the Trustee, may rescind and annul such declaration
and its consequences if

                  (1) the Company or the Guarantor has paid or deposited with
         the Trustee a sum sufficient to pay

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

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

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

                           (D) all sums paid or advanced by the Trustee
                  hereunder and the reasonable compensation, expenses,
                  disbursements and advances of the Trustee, its agents and
                  counsel except such costs and expenses as are a result of
                  negligence or bad faith on the part of the Trustee;

         and


                                      -51-
<PAGE>   64
                  (2) all Events of Default with respect to Securities of that
         series, other than the non-payment of the principal of and interest, if
         any, on the Securities of that series which have become due solely by
         such declaration of acceleration, have been cured or waived as provided
         in Section 513.

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

                  Upon receipt by the Trustee of any declaration of
acceleration, or any rescission and annulment of any such declaration, pursuant
to this Section 502 with respect to Securities of any series, a record date
shall automatically and without any other action by any Person be set for the
purpose of determining the Holders of Outstanding Securities of such series
entitled to join in such declaration, or rescission and annulment, as the case
may be, which record date shall be the close of business on the day the Trustee
receives such declaration, or rescission and annulment, as the case may be. The
Holders of Outstanding Securities of such series on such record date (or their
duly appointed agents), and only such Persons, shall be entitled to join in such
declaration, or rescission and annulment, as the case may be, whether or not
such Holders remain Holders after such record date; provided that, unless such
declaration, or rescission and annulment, as the case may be, shall have become
effective by virtue of Holders of at least 25%, in the case of any declaration
of acceleration, or a majority, in the case of any rescission or annulment, in
principal amount of Outstanding Securities of such series on such record date
(or their duly appointed agents) having joined therein on or prior to the 90th
day after such record date, such declaration, or rescission and annulment, as
the case may be, shall automatically and without any action by any Person be
cancelled and of no further effect. Nothing in this paragraph shall prevent a
Holder (or a duly appointed agent thereof) from giving, before or after the
expiration of such 90-day period, a declaration of acceleration, or a rescission
and annulment of any such declaration, contrary to or different from, or, after
the expiration of such period, identical to, a declaration, or rescission and
annulment, as the case may be, that has been cancelled pursuant to the proviso
to the preceding sentence, in which event a new record date in respect thereof
shall be set pursuant to this paragraph.


                                      -52-




<PAGE>   65
Section 503.  Collection of Indebtedness and Suits
              for Enforcement by Trustee.

                  The Company covenants that if

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

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

the Company will, upon written demand of the Trustee, pay to it, for the benefit
of the Holders of such Securities, the whole amount then due and payable on such
Securities for principal and any premium and interest and, to the extent that
payment of such interest shall be legally enforceable, interest on any overdue
principal and premium and on any overdue interest, at the rate or rates
prescribed therefor in such Securities, and, in addition thereto, such further
amount as shall be sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel except such costs and expenses, as are a
result of negligence or bad faith on the part of the Trustee. Until such demand
is made by the Trustee, the Company may pay the principal of and premium, if
any, and interest, if any, on the Securities of any series to the Holders
thereof, whether or not the Securities of such series are overdue.

                  If the Company fails to pay such amounts forthwith upon such
demand, the Trustee, in its own name and as trustee of an express trust, may
institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company, the Guarantor or any other obligor upon
such Securities and collect the moneys adjudged or decreed to be payable in the
manner provided by law out of the property of the Company, the Guarantor or any
other obligor upon such Securities, wherever situated.

                  If an Event of Default with respect to Securities of any
series occurs and is continuing, the Trustee may in its discretion proceed to
protect and enforce its rights and the rights of the Holders of Securities of
such series by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any such rights,

                                        

                                      -53-


<PAGE>   66



whether for the specific enforcement of any covenant or agreement in this
Indenture or in aid of the exercise of any power granted herein, or to enforce
any other proper remedy.

Section 504.  Trustee May File Proofs of Claim.

                  In case of any judicial proceeding relative to the Company,
the Guarantor or any other obligor upon the Securities or the property of the
Company, the Guarantor or such other obligor or their creditors, the Trustee
shall be entitled and empowered, by intervention in such proceeding or
otherwise, to take any and all actions authorized under the Trust Indenture Act
in order to have claims of the Holders and the Trustee allowed in any such
proceeding. In particular, the Trustee shall be authorized,

                  (i) to file and prove a claim for the whole amount of
         principal (and premium, if any) and interest owing and unpaid in
         respect of the Securities in accordance with the terms thereof and to
         file such other papers or documents as may be necessary or advisable in
         order to have the claims of the Trustee (including any claim for the
         reasonable compensation, expenses, disbursements and advances of the
         Trustee, its agents and counsel) and of the Holders allowed in such
         judicial proceeding, and

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

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
other similar official in any such judicial proceeding is hereby authorized by
each Holder to make such payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the Holders, to
pay to the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 607 except such costs and expenses, as are
a result of negligence or bad faith on the part of the Trustee.

                  No provision of this Indenture shall be deemed to authorize
the Trustee to authorize or consent to or accept or adopt on behalf of any
Holder any plan of reorganization, arrangement, adjustment or composition
affecting the Securities or the rights of any Holder thereof or to authorize the
Trustee to vote in respect of the claim of any Holder in any such proceeding;
provided, however, that the Trustee may, on behalf of the Holders, vote for the
election of a trustee in

                                        

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<PAGE>   67



bankruptcy or similar official and be a member of a
creditors' or other similar committee.

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

                  All rights of action and claims under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without the possession
of any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name as trustee of an express trust, and any recovery of judgment shall,
after provision for the payment of the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel except such
costs and expenses, as are a result of negligence or bad faith on the part of
the Trustee, be for the ratable benefit of the Holders of the Securities in
respect of which such judgment has been recovered.

Section 506.  Application of Money Collected.

                  Subject to Article Fourteen and Article Sixteen, any money
collected by the Trustee pursuant to this Article shall be applied in the
following order, at the date or dates fixed by the Trustee and, in case of the
distribution of such money on account of principal or any premium or interest,
upon presentation of the Securities and the notation thereon of the payment if
only partially paid and upon surrender thereof if fully paid:

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

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

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

                                        

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<PAGE>   68



Section 507.  Limitation on Suits.

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

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

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

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

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

                  (5) no direction inconsistent with such written request has
         been given to the Trustee during such 60-day period by the Holders of a
         majority in principal amount of the Outstanding Securities of that
         series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

                                        

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<PAGE>   69



Section 508.  Unconditional Right of Holders to Receive
              Principal, Premium and Interest.

                  Notwithstanding any other provision in this Indenture, the
Holder of any Security shall have the right, which is absolute and
unconditional, to receive payment of the principal of and any premium and
(subject to Section 307) any interest on such Security on the Stated Maturity or
Maturities expressed in such Security (or, in the case of redemption, on the
Redemption Date) and to institute suit for the enforcement of any such payment,
and such rights shall not be impaired without the consent of such Holder.

Section 509.  Restoration of Rights and Remedies.

                  If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Guarantor, the Trustee and
the Holders shall be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Trustee and
the Holders shall continue as though no such proceeding had been instituted.

Section 510.  Rights and Remedies Cumulative.

                  Except as otherwise provided with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities in the last
paragraph of Section 306, no right or remedy herein conferred upon or reserved
to the Trustee or to the Holders is intended to be exclusive of any other right
or remedy, and every right and remedy shall, to the extent permitted by law, be
cumulative and in addition to every other right and remedy given hereunder or
now or hereafter existing at law or in equity or otherwise. The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent the
concurrent assertion or employment of any other appropriate right or remedy.

Section 511.  Delay or Omission Not Waiver.

                  No delay or omission of the Trustee or of any Holder of any
Securities to exercise any right or remedy accruing upon any Event of Default
shall impair any such right or remedy or constitute a waiver of any such Event
of Default or an acquiescence therein. Subject to Section 507, every right and
remedy given by this Article or by law to the Trustee or to the Holders may be
exercised from time to

                                        

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<PAGE>   70



time, and as often as may be deemed expedient, by the Trustee or by the Holders,
as the case may be.

Section 512.  Control by Holders.

                  The Holders of a majority in principal amount of the
Outstanding Securities of any series shall have the right to direct the time,
method and place of conducting any proceeding for any remedy available to the
Trustee, or exercising any trust or power conferred on the Trustee, with respect
to the Securities of such series, provided that

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

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

                  Upon receipt by the Trustee of any such direction with respect
to Securities of any series, a record date shall be set for determining the
Holders of Outstanding Securities of such series entitled to join in such
direction, which record date shall be the close of business on the day the
Trustee receives such direction. The Holders of Outstanding Securities of such
series on such record date (or their duly appointed agents), and only such
Persons, shall be entitled to join in such direction, whether or not such
Holders remain Holders after such record date; provided that, unless such
direction shall have become effective by virtue of Holders of at least a
majority in principal amount of Outstanding Securities of such series on such
record date (or their duly appointed agents) having joined therein on or prior
to the 90th day after such record date, such direction shall automatically and
without any action by any Person be cancelled and of no further effect. Nothing
in this paragraph shall prevent a Holder (or a duly appointed agent thereof)
from giving, before or after the expiration of such 90-day period, a direction
contrary to or different from, or, after the expiration of such period,
identical to, a direction that has been cancelled pursuant to the proviso to the
preceding sentence, in which event a new record date in respect thereof shall be
set pursuant to this paragraph.

Section 513.  Waiver of Past Defaults.

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

                                        

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<PAGE>   71



series waive any past default hereunder with respect to such series and its
consequences, except a default

                  (1) in the payment of the principal of or any premium or
         interest on any Security of such series, or

                  (2) in respect of a covenant or provision hereof which under
         Article Nine cannot be modified or amended without the consent of the
         Holder of each Outstanding Security of such series affected.

                  With respect to any series of Securities, the Company or the
Guarantor may, but shall not be obligated to, establish a record date for the
purpose of determining the Persons entitled to waive any past default hereunder.
If a record date is fixed, the Holders on such record date, or their duly
designated proxies, and only such Persons, shall be entitled to waive any
default hereunder, whether or not such Holders remain Holders after such record
date; provided, however, that unless such Holders of not less than a majority in
principal amount of the Outstanding Securities of such series shall have waived
such default prior to the date which is 90 days after such record date, any such
waiver previously given shall automatically and without further action by any
Holder be cancelled and of no effect.

                  Upon any such waiver, such default shall cease to exist, and
any Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or impair any right consequent thereon.

Section 514.  Undertaking for Costs.

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

                                        

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<PAGE>   72



                                   ARTICLE SIX

                                   The Trustee

Section 601.  Certain Duties and Responsibilities.

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

Section 602.  Notice of Defaults.

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

Section 603.  Certain Rights of Trustee.

                  Subject to the provisions of Section 601:

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

                                        

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<PAGE>   73



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

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

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

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

                  (f) prior to the occurrence of an Event of Default and after
         the remedy or waiver of all Events of Default, the Trustee shall not be
         bound to make any investigation into the facts or matters stated in any
         resolution, certificate, statement, instrument, opinion, report,
         notice, request, direction, consent, order, bond, debenture, note,
         other evidence of indebtedness or other paper or document, but the
         Trustee, in its discretion, may make such further inquiry or
         investigation into such facts or matters as it may see fit, and, if the
         Trustee shall de-

                                        

                                      -61-


<PAGE>   74



         termine to make such further inquiry or investigation, it shall upon
         reasonable notice to the Company and the Guarantor be entitled to
         examine the books, records and premises of the Company and the
         Guarantor, personally or by agent or attorney at a time and place
         acceptable to the Company or the Guarantor, as the case may be; and

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

Section 604.  Not Responsible for Recitals or Issuance of Securities.

                  The recitals contained herein and in the Securities, except
the Trustee's certificates of authentication, shall be taken as the statements
of the Company or the Guarantor, as the case may be, and the Trustee or any
Authenticating Agent assumes no responsibility for their correctness. The
Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Securities or of the Guarantees. The Trustee or any
Authenticating Agent shall not be accountable for the use or application by the
Company of Securities or the proceeds thereof.

Section 605.  May Hold Securities.

                  The Trustee, any Authenticating Agent, any Paying Agent, any
Security Registrar or any other agent of the Company or the Guarantor, in its
individual or any other capacity, may become the owner or pledgee of Securities
and, subject to Sections 608 and 613, may otherwise deal with the Company or the
Guarantor with the same rights it would have if it were not Trustee,
Authenticating Agent, Paying Agent, Security Registrar or such other agent.

Section 606.  Money Held in Trust.

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

                                        

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<PAGE>   75



otherwise agreed with the Company or the Guarantor, as the case may be.

Section 607.  Compensation and Reimbursement.

                  The Company and the Guarantor agree

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

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

                  (3) to indemnify the Trustee for, and to hold it harmless
         against, any loss, liability or expense incurred without negligence or
         bad faith on its part, arising out of or in connection with the
         acceptance or administration of the trust or trusts hereunder,
         including the reasonable costs and expenses of defending itself against
         any claim or liability in connection with the exercise or performance
         of any of its powers or duties hereunder.

Section 608.  Disqualification; Conflicting
              Interests.

                  If the Trustee has or shall acquire a conflicting interest
within the meaning of the Trust Indenture Act, the Trustee shall either
eliminate such interest or resign, to the extent and in the manner provided by,
and subject to the provisions of, the Trust Indenture Act and this Indenture.

                                        

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<PAGE>   76



Section 609.  Corporate Trustee Required; Eligibility.

                  There shall at all times be a Trustee hereunder which shall be
a Person that is eligible pursuant to the Trust Indenture Act to act as such and
has a combined capital and surplus of at least $50,000,000 or is a subsidiary of
a corporation which shall be a Person that has a combined capital and surplus of
at least $50,000,000 and which unconditionally guarantees the obligations of the
Trustee hereunder. If such Person publishes reports of condition at least
annually, pursuant to law or to the requirements of said supervising or
examining authority, then for the purposes of this Section, the combined capital
and surplus of such Person shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. If at
any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section, it shall resign immediately in the manner and with
the effect hereinafter specified in this Article.

Section 610.  Resignation and Removal; Appointment of Successor.

                  (a) No resignation or removal of the Trustee and no
appointment of a successor Trustee pursuant to this Article shall become
effective until the acceptance of appointment by the successor Trustee in
accordance with the applicable requirements of Section 611.

                  (b) The Trustee may resign at any time with respect to the
Securities of one or more series by giving written notice thereof to the Company
and the Guarantor. If the instrument of acceptance by a successor Trustee
required by Section 611 shall not have been delivered to the Trustee within 30
days after the giving of such notice of resignation, the resigning Trustee may
petition any court of competent jurisdiction for the appointment of a successor
Trustee with respect to the Securities of such series.

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

                  (d)  If at any time:

                  (1)  the Trustee shall fail to comply
         with Section 608 after written request there-
         for by the Company or the Guarantor or by any

                                        

                                      -64-


<PAGE>   77



         Holder who has been a bona fide Holder of a Security for at least six
         months, or

                  (2) the Trustee shall cease to be eligible under Section 609
         and shall fail to resign after written request therefor by the Company
         or the Guarantor or by any such Holder, or

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

then, in any such case, (i) the Company by a Board Resolution may remove the
Trustee with respect to all Securities, or (ii) subject to Section 514, any
Holder who has been a bona fide Holder of a Security for at least six months
may, on behalf of itself and all others similarly situated, petition any court
of competent jurisdiction for the removal of the Trustee with respect to all
Securities and the appointment of a successor Trustee or Trustees.

                  (e) If the Trustee shall resign, be removed or become
incapable of acting, or if a vacancy shall occur in the office of Trustee for
any cause, with respect to the Securities of one or more series, the Company, by
a Board Resolution, shall promptly appoint a successor Trustee or Trustees with
respect to the Securities of that or those series (it being understood that any
such successor Trustee may be appointed with respect to the Securities of one or
more or all of such series and that at any time there shall be only one Trustee
with respect to the Securities of any particular series) and shall comply with
the applicable requirements of Section 611. If, within one year after such
resignation, removal or incapability, or the occurrence of such vacancy, a
successor Trustee with respect to the Securities of any series shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Securities of such series delivered to the Company and the Guarantor
and the retiring Trustee, the successor Trustee so appointed shall, forthwith
upon its acceptance of such appointment in accordance with the applicable
requirements of Section 611, become the successor Trustee with respect to the
Securities of such series and to that extent supersede the successor Trustee
appointed by the Company. If no successor Trustee with respect to the Securities
of any

                                        

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<PAGE>   78



series shall have been so appointed by the Company or the Holders and accepted
appointment in the manner required by Section 611, any Holder who has been a
bona fide Holder of a Security of such series for at least six months may, on
behalf of itself and all others similarly situated, petition any court of
competent jurisdiction for the appointment of a successor Trustee with respect
to the Securities of such series.

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

Section 611.  Acceptance of Appointment by Successor.

                  (a) In case of the appointment hereunder of a successor
Trustee with respect to all Securities, every such successor Trustee so
appointed shall execute, acknowledge and deliver to the Company, to the
Guarantor and to the retiring Trustee an instrument accepting such appointment,
and thereupon the resignation or removal of the retiring Trustee shall become
effective and such successor Trustee, without any further act, deed or
conveyance, shall become vested with all the rights, powers, trusts and duties
of the retiring Trustee; but, on the request of the Company, the Guarantor or
the successor Trustee, such retiring Trustee shall, upon payment of its charges,
execute and deliver an instrument transferring to such successor Trustee all the
rights, powers and trusts of the retiring Trustee and shall duly assign,
transfer and deliver to such successor Trustee all property and money held by
such retiring Trustee hereunder.

                  (b) In case of the appointment hereunder of a successor
Trustee with respect to the Securities of one or more (but not all) series, the
Company, the Guarantor, the retiring Trustee and each successor Trustee with
respect to the Securities of such series shall execute and deliver an indenture
supplemental hereto wherein each successor Trustee shall accept such appointment
and which (1) shall contain such provisions as shall be necessary or desirable
to transfer the rights, powers, trust and duties of the retiring Trustee with
respect to the Securities of that or those series to which the appointment of
such successor Trustee relates, (2) if the retiring Trustee is not retiring

                                        

                                      -66-


<PAGE>   79



with respect to all Securities, shall contain such provisions as shall be deemed
necessary or desirable to confirm that all the rights, powers, trusts and duties
of the retiring Trustee with respect to the Securities of that or those series
as to which the retiring Trustee is not retiring shall continue to be vested in
the retiring Trustee, and (3) shall add to or change any of the provisions of
this Indenture as shall be necessary to provide for or facilitate the
administration of the trusts hereunder by more than one Trustee, it being
understood that nothing herein or in such supplemental indenture shall
constitute such Trustee co-trustees of the same trust and that each such Trustee
shall be trustee of a trust or trusts hereunder separate and apart from any
trust or trusts hereunder administered by any other such Trustee; and upon the
execution and delivery of such supplemental indenture the resignation or removal
of the retiring Trustee shall become effective to the extent provided therein
and each such successor Trustee, without any further act, deed or conveyance,
shall become vested with all the rights, powers, trusts and duties of the
retiring Trustee with respect to the Securities of that or those series to which
the appointment of such successor Trustee relates; but, on request of the
Company and the Guarantor or any successor Trustee, such retiring Trustee shall
duly assign, transfer and deliver to such successor Trustee all property and
money held by such retiring Trustee hereunder with respect to the Securities of
that or those series to which the appointment of such successor Trustee relates.

                  (c) Upon request of any such successor Trustee, the Company
and the Guarantor shall execute any and all instruments for more fully and
certainly vesting in and confirming to such successor Trustee all such rights,
powers and trusts referred to in paragraphs (a) and (b) of this Section, as the
case may be.

                  (d) No successor shall accept its appointment unless at the
time of such acceptance such successor Trustee shall be qualified and eligible
under this Article.

Section 612.  Merger, Conversion, Consolidation or Succession to Business.

                  Any corporation into which the Trustee may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Trustee shall be a
party, or any corporation succeeding to all or substantially all the corporate
trust business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be

                                        

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<PAGE>   80



otherwise qualified and eligible under this Article, without the execution or
filing of any paper or any further act on the part of any of the parties hereto.
In case any Securities shall have been authenticated, but not delivered, by the
Trustee then in office, any successor by merger, conversion or consolidation to
such authenticating Trustee may adopt such authentication and deliver the
Securities so authenticated with the same effect as if such successor Trustee
had itself authenticated such Securities.

Section 613.  Preferential Collection of Claims Against Company or Guarantor.

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

Section 614.  Appointment of Authenticating Agent.

                  The Trustee may with the consent of the Company appoint an
Authenticating Agent or Agents with respect to one or more series of Securities
which shall be authorized to act on behalf of the Trustee to authenticate
Securities of such series issued upon original issue and upon exchange,
registration of transfer or partial redemption thereof or pursuant to Section
306, and Securities so authenticated shall be entitled to the benefits of this
Indenture and shall be valid and obligatory for all purposes as if authenticated
by the Trustee hereunder. Wherever reference is made in this Indenture to the
authentication and delivery of Securities by the Trustee or the Trustee's
certificate of authentication, such reference shall be deemed to include
authentication and delivery on behalf of the Trustee by an Authenticating Agent
and a certificate of authentication executed on behalf of the Trustee by an
Authenticating Agent. Each Authenticating Agent shall be acceptable to the
Company and shall at all times be a corporation organized and doing business
under the laws of the United States of America, any State thereof or the
District of Columbia, authorized under such laws to act as Authenticating Agent,
having a combined capital and surplus of not less than $50,000,000 and subject
to supervision or examination by Federal or State authority. If such
Authenticating Agent publishes reports of condition at least annually, pursuant
to law or to the requirements of said supervising or examining authority, then
for the purposes of this Section, the combined capital and surplus of such
Authenticating Agent shall be deemed to be its combined capital and surplus

                                        

                                      -68-


<PAGE>   81



as set forth in its most recent report of condition so published. If at any time
an Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, such Authenticating Agent shall resign immediately
in the manner and with the effect specified in this Section.

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

                  An Authenticating Agent may resign at any time by giving
written notice thereof to the Trustee and to the Company. The Trustee or the
Company may at any time terminate the agency of an Authenticating Agent by
giving written notice thereof to such Authenticating Agent and to the Company or
the Trustee, as the case may be. Upon receiving such a notice of resignation or
upon such a termination, or in case at any time such Authenticating Agent shall
cease to be eligible in accordance with the provisions of this Section, the
Trustee may appoint a successor Authenticating Agent which shall be acceptable
to the Company and shall mail written notice of such appointment by first-class
mail, postage prepaid, to all Holders of Securities of the series with respect
to which such Authenticating Agent will serve, as their names and addresses
appear in the Security Register. Any successor Authenticating Agent upon
acceptance of its appointment hereunder shall become vested with all the rights,
powers and duties of its predecessor hereunder, with like effect as if
originally named as an Authenticating Agent. No successor Authenticating Agent
shall be appointed unless eligible under the provisions of this Section.

                  The Trustee agrees to pay to each Authenticating Agent from
time to time reasonable compensation for its services under this Section, and
the Trustee shall be entitled to be reimbursed for such payments, subject to the
provisions of Section 607.

                  If an appointment with respect to one or more series is made
pursuant to this Section, the Securities of such series may have endorsed
thereon, in addition to the

                                        

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Trustee's certificate of authentication, an alternative certificate of
authentication in the following form:

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

                                          ........................,
                                                         As Trustee

                                          By......................,

                                            As Authenticating Agent

                                          By......................,
                                                 Authorized Officer

                                  ARTICLE SEVEN

          Holders' Lists and Reports by Trustee, Company and Guarantor

Section 701.  Company and Guarantor to Furnish

                     Trustee Names and Addresses of Holders.

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

                  (a) semi-annually, not later than 10 days after each Regular
         Record Date in each year, a list for each series of Securities, in such
         form as the Trustee may reasonably require, of the names and addresses
         of the Holders of Securities of such series as of the preceding Regular
         Record Date, and

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

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

Section 702.  Preservation of Information; Communications to Holders.

                  (a) The Trustee shall preserve, in as current a form as is
reasonably practicable, the names and addresses of Holders contained in the most
recent list furnished to the Trustee as provided in Section 701 and the names
and

                                        

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<PAGE>   83



addresses of Holders received by the Trustee in its capacity as Security
Registrar. The Trustee may destroy any list furnished to it as provided in
Section 701 upon receipt of a new list so furnished.

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

                  (c) Every Holder of Securities, by receiving and holding the
same, agrees with the Company, the Guarantor and the Trustee that none of the
Company, the Guarantor, the Trustee or any agent of any of them shall be held
accountable by reason of any disclosure of information as to names and addresses
of Holders made pursuant to the Trust Indenture Act.

Section 703.  Reports by Trustee.

                  (a) The Trustee shall transmit to Holders such reports
concerning the Trustee and its actions under this Indenture as may be required
pursuant to the Trust Indenture Act at the times and in the manner provided
pursuant thereto. To the extent that any such report is required by the Trust
Indenture Act with respect to any 12 month period, such report shall cover the
12 month period ending July 15 and shall be transmitted by the next succeeding
September 15.

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

Section 704.  Reports by Company and Guarantor.

                  The Company and the Guarantor shall file with the Trustee and
the Commission, and transmit to Holders, such information, documents and other
reports, and such summaries thereof, as may be required pursuant to the Trust
Indenture Act at the times and in the manner provided pursuant to such Act;
provided that any such information, documents or reports required to be filed
with the Commission pursuant to Section 13 or 15(d) of the Exchange Act shall be
filed with the Trustee within 15 days after the same is so required to be filed
with the Commission.

                                        

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                                  ARTICLE EIGHT

                    Consolidation, Merger, or Sale of Assets

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

                  Neither the Company nor the Guarantor shall consolidate with
or merge into any other Person or sell its properties and assets as, or
substantially as, an entirety to any Person, and neither the Company nor the
Guarantor shall permit any Person to consolidate with or merge into the Company
or the Guarantor, as the case may be, unless:

                  (1) in case the Company or the Guarantor, as the case may be,
         shall consolidate with or merge into another Person (including, without
         limitation, the Guarantor or the Company, as the case may be), or sell
         its properties and assets as, or substantially as, an entirety to any
         Person (including, without limitation, the Guarantor or the Company, as
         the case may be), the Person formed by such consolidation or into which
         the Company or the Guarantor, as the case may be, is merged or the
         Person which purchases the properties and assets of the Company or the
         Guarantor, as the case may be, as, or substantially, as an entirety
         shall be a corporation, partnership or trust, shall be organized and
         validly existing under the laws of the United States of America, any
         State thereof or the District of Columbia and shall expressly assume,
         by an indenture supplemental hereto, in the case of any such
         transaction involving the Company, the due and punctual payment of the
         principal of and any premium and interest on all the Securities and the
         performance or observance of every covenant of this Indenture on the
         part of the Company to be performed or observed, and, in the case of
         any such transaction involving the Guarantor, the due and punctual
         performance of the Guarantees and the performance or observance of
         every covenant of this Indenture on the part of the Guarantor to be
         performed or observed, in each case by supplemental indenture
         satisfactory in form to the Trustee, executed and delivered to the
         Trustee, by the Person (if other than the Company or the Guarantor,

                                        

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<PAGE>   85



         as the case may be) formed by such consolidation or into which the
         Company or the Guarantor, as the case may be, shall have been merged or
         by the corporation which shall have acquired the assets of the Company
         or the Guarantor, as the case may be;

                  (2) immediately after giving effect to such transaction, no
         Event of Default shall have happened and be continuing; and

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

Section 802.  Successor Substituted.

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

Section 803.               Assumption by Guarantor or Subsidiary of
                           Company's Obligations

                  The Guarantor or any Subsidiary of the Guarantor may, where
permitted by law, assume the obligations of the Company (or any Person which
shall have previously assumed the obligations of the Company) for the due and
punctual payment of the principal of (and any premium), interest on

                                        

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<PAGE>   86



and any other payments with respect to the Securities and the performance of
every covenant of this Indenture and the Securities on the part of the Company
(or such other Person) to be performed or observed, provided that:

                  (1) the Guarantor or such Subsidiary, as the case may be,
         shall expressly assume such obligations by an indenture supplemental
         hereto, in form reasonably satisfactory to the Trustee, executed and
         delivered to the Trustee and if such Subsidiary assumed such
         obligations, the Guarantor shall, by such supplemental indenture,
         confirm that its Guarantees shall apply to such Subsidiary's
         obligations under the Securities and this Indenture, as modified by
         such supplemental indenture;

                  (2) immediately after giving effect to such transaction, no
         Event of Default shall have occurred and be continuing;

                  (3) the Guarantor or such Subsidiary, as the case may be,
         shall have delivered to the Trustee an Officers' Certificate and an
         Opinion of Counsel, each stating that such assumption and such
         supplemental indenture comply with this Article and that all conditions
         precedent herein provided for relating to such transaction have been
         complied with;

                  (4) such assumption shall not result in adverse tax
         consequences to any Holder; and

                  (5) the Guarantor and/or such Subsidiary shall have delivered
         to the Trustee an Opinion of Counsel to the effect that (1) the
         Securities are legal, valid and binding obligations of the assuming
         corporation enforceable against the assuming corporation in accordance
         with their terms subject to (a) bankruptcy, insolvency, reorganization,
         fraudulent transfer, moratorium and other similar laws now or hereafter
         in effect relating to or affecting creditors' rights generally and the
         rights of creditors of insurance companies generally, and (b) general
         principles of equity (regardless of whether considered in a proceeding
         at law or in equity) and (2) if a Subsidiary of the Guarantor is the
         assuming corporation, the Guarantees continue to be the legal, valid
         and binding obligations of the Guarantor enforceable against the
         Guarantor in accordance with their terms subject to (a) bankruptcy,
         insolvency, reorganization, fraudulent transfer, moratorium and other
         similar laws now or hereafter in effect relating to or affecting
         creditors'

                                        

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<PAGE>   87



         rights generally and the rights of creditors of insurance companies
         generally and (b) general principles of equity (regarding whether
         considered in a proceeding at law or in equity).

                  Upon any such assumption, the Guarantor or such Subsidiary
shall succeed to, and be substituted for, and may exercise every right and power
of, the Company under this Indenture with the same effect as if the Guarantor or
such Subsidiary, as the case may be, had been named as the "Company" herein, and
the Person named as the "Company" in the first paragraph of this instrument or
any successor Person which shall theretofore have become such in the manner
prescribed in this Article shall be released from its liability as obligor upon
the Securities.

                                  ARTICLE NINE

                             Supplemental Indentures

Section 901.  Supplemental Indentures Without Consent of Holders.

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

                  (1) to evidence the succession of another Person to the
         Company or the Guarantor and the assumption by any such successor of
         the covenants of the Company or the Guarantor herein and in the
         Securities or Guarantees; or

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

                  (3)  to add any additional Events of Default; or

                                        

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<PAGE>   88




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

                  (5) to add to, change or eliminate any of the provisions of
         this Indenture in respect of one or more series of Securities,
         including, without limitation, with respect to any of the provisions
         set forth in Articles Fourteen, Fifteen and Sixteen provided that any
         such addition, change or elimination (i) shall neither (A) apply to any
         Security of any series created prior to the execution of such
         supplemental indenture and entitled to the benefit of such provision
         nor (B) modify the rights of the Holder of any such Security with
         respect to such provision or (ii) shall become effective only when
         there is no such Security Outstanding; or

                  (6) to secure the Securities pursuant to the requirements of
         Section 1005, or to otherwise secure the Securities of any series or
         the Guarantees; or

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

                  (8) to evidence and provide for the acceptance of appointment
         hereunder by a successor Trustee with respect to the Securities of one
         or more series and to add to or change any of the provisions of this
         Indenture as shall be necessary to provide for or facilitate the
         administration of the trusts hereunder by more than one Trustee,
         pursuant to the requirements of Section 611(b); or

                  (9) to cure any ambiguity, to correct or supplement any
         provision herein which may be inconsistent with any other provision
         herein, or to make any other provisions with respect to matters or
         questions arising under this Indenture, provided that such action

                                        

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<PAGE>   89



         pursuant to this clause (9) shall not adversely affect the interests of
         the Holders of Securities of any series in any material respect; or

                  (10) to conform to any mandatory provisions of law.

Section 902.  Supplemental Indentures with Consent of Holders.

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

                  (1) change the Stated Maturity of the principal of, or any
         installment of principal of or interest on, any Security, or reduce the
         principal amount thereof or the rate of interest thereon (including any
         change in the Floating or Adjustable Rate Provision pursuant to which
         such rate is determined that would reduce such rate for any period) or
         any premium payable upon the redemption thereof, or reduce the amount
         of the principal of an Original Issue Discount Security that would be
         due and payable upon a declaration of acceleration of the Maturity
         thereof pursuant to Section 502, or change any Place of Payment where,
         or the coin or currency in which, any Security or any premium or
         interest thereon is payable, or impair the right to institute suit for
         the enforcement of any such payment on or after the Stated Maturity
         thereof (or, in the case of redemption, on or after the Redemption
         Date), or modify the provisions of this Indenture with respect to the
         subordination of the Securities of any series or the subordination of
         the Guarantees

                                        

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<PAGE>   90



         of such Securities in a manner adverse to the Holders, or

                  (2) reduce the percentage in principal amount of the
         Outstanding Securities of any series, the consent of whose Holders is
         required for any such supplemental indenture, or the consent of whose
         Holders is required for any waiver (of compliance with certain
         provisions of this Indenture or certain defaults hereunder and their
         consequences) provided for in this Indenture, or

                  (3) modify any of the provisions of this Section, Section 513
         or Section 907, except to increase any such percentage or to provide
         that certain other provisions of this Indenture cannot be modified or
         waived without the consent of the Holder of each Outstanding Security
         affected thereby, provided, however, that this clause shall not be
         deemed to require the consent of any Holder with respect to changes in
         the references to "the Trustee" and concomitant changes in this Section
         and Section 907, or the deletion of this proviso, in accordance with
         the requirements of Sections 611(b) and 901(8), or

                  (4) modify or affect in any manner adverse to the interests of
         the Holders of any Securities the terms and conditions of the
         obligations of the Guarantor in respect of the due and punctual payment
         of the principal thereof, premium, if any, and interest, if any,
         thereon or any sinking fund payments provided in respect thereof.

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular series of Securities, or which modifies the
rights of the Holders of Securities of such series with respect to such covenant
or other provision, shall be deemed not to affect the rights under this
Indenture of the Holders of Securities of any other series.

                  It shall not be necessary for any Act of Holders under this
Section to approve the particular form of any proposed supplemental indenture,
but it shall be sufficient if such Act shall approve the substance thereof.

                                        

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<PAGE>   91



Section 903.  Execution of Supplemental Indentures.

                  In executing, or accepting the additional trusts created by,
any supplemental indenture permitted by this Article or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be entitled
to receive, and (subject to Section 601) shall be fully protected in relying
upon, an Opinion of Counsel stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture. The Trustee may, but
shall not be obligated to, enter into any such supplemental indenture which
affects the Trustee's own rights, duties or immunities under this Indenture or
otherwise.

Section 904.  Effect of Supplemental Indentures.

                  Upon the execution of any supplemental indenture under this
Article, this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes; and
every Holder of Securities theretofore or thereafter authenticated and delivered
hereunder shall be bound thereby.

Section 905.  Conformity with Trust Indenture Act.

                  Every supplemental indenture executed pursuant to this Article
shall conform to the requirements of the Trust Indenture Act.

Section 906.  Reference in Securities to Supplemental Indentures.

                  Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture. If the Company and
the Guarantor shall so determine, new Securities of any series so modified as to
conform, in the opinion of the Trustee, the Company and the Guarantor, to any
such supplemental indenture may be prepared and executed by the Company, the
Guarantees endorsed thereon may be executed by the Guarantor and such Securities
may be authenticated and delivered by the Trustee in exchange for Outstanding
Securities of such series.

Section 907.  Waiver of Compliance by Holders.

                  Anything in this Indenture to the contrary notwithstanding,
any of the acts which the Company or the Guarantor is required to do, or is
prohibited from doing, by

                                        

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<PAGE>   92



any of the provisions of this Indenture may, to the extent that such provisions
might be changed or eliminated by a supplemental indenture pursuant to Section
902 upon consent of holders of not less than a majority in aggregate principal
amount of the then Outstanding Securities of the series affected, be omitted or
done by the Company or the Guarantor, as the case may be, if there is obtained
the prior consent or waiver of the holders of at least a majority in aggregate
principal amount of the then Outstanding Securities of such series.

Section 908.  Subordination Unimpaired.

                  No provision in any supplemental indenture that affects the
superior position of the holders of Senior Debt of the Company or of Senior Debt
of the Guarantor shall be effective against holders of such Senior Debt without
the consent of any such affected holder.

                                   ARTICLE TEN

                                    Covenants

Section 1001.              Payment of Principal, Premium and Interest.

                  The Company covenants and agrees for the benefit of each
series of Securities that it will duly and punctually pay or cause to be paid
the principal of and any premium and interest on the Securities of that series
in accordance with the terms of the Securities and this Indenture.

Section 1002.      Maintenance of Office or Agency by Company and Guarantor.

                  (a) So long as any Securities are Outstanding, the Company
will maintain in each Place of Payment for any series of Securities an office or
agency where Securities of that series may be presented or surrendered for
payment, where Securities of that series may be surrendered for registration of
transfer or exchange, and where notices and demands to or upon the Company in
respect of the Securities of that series and this Indenture may be served. The
Company will give prompt written notice to the Trustee of the location, and any
change in the location, of such office or agency. If at any time the Company
shall fail to maintain any such required office or agency or shall fail to
furnish the Trustee with the address thereof, such presentations, surrenders,
notices and demands may be made or served at the Corporate Trust Office of the
Trustee, and the Company

                                        

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<PAGE>   93



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

                  The Company may also from time to time designate one or more
other offices or agencies where the Securities of one or more series may be
presented or surrendered for any or all such purposes and may from time to time
rescind such designations; provided, however, that no such designation or
rescission shall in any manner relieve the Company of its obligation to maintain
an office or agency in each Place of Payment for Securities of any series for
such purposes. The Company will give prompt written notice to the Trustee of any
such designation or rescission and of any change in the location of any such
other office or agency.

                  (b) So long as any Securities are Outstanding, the Guarantor
will maintain in each Place of Payment for any series of Securities an office or
agency where Securities of that series may be presented or surrendered for
payment under the Guarantees endorsed thereon and where notices and demands to
or upon the Guarantor in respect of the Guarantees endorsed on the Securities of
that series and this Indenture may be served. The Guarantor will give prompt
written notice to the Trustee of the location, and any change in the location,
of such office or agency. If at any time the Guarantor shall fail to maintain
any such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee, and the Guarantor hereby
appoints the Trustee as its agent to receive all such presentations, surrenders,
notices and demands.

                  The Guarantor may also from time to time designate one or more
other offices or agencies where the Securities of one or more series may be
presented or surrendered for such purpose or where such notices or demands may
be served and may from time to time rescind such designations; provided,
however, that no such designation or rescission shall in any manner relieve the
Guarantor of its obligation to maintain an office or agency in each Place of
Payment for Securities of any series for such purposes. The Guarantor will give
prompt written notice to the Trustee of any such designation or rescission and
of any change in the location of any such other office or agency.

Section 1003.  Money for Securities Payments to Be Held in Trust.

                  If the Company or the Guarantor shall at any time act as its
own Paying Agent with respect to any series of

                                        

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<PAGE>   94



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

                  Whenever the Company shall have one or more Paying Agents for
any series of Securities, it will, prior to each due date of the principal of or
any premium or interest on any Securities of that series, deposit with a Paying
Agent a sum sufficient to pay such amount, such sum to be held as provided by
the Trust Indenture Act, and (unless such Paying Agent is the Trustee) the
Company will promptly notify the Trustee of its action or failure so to act.

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

                  The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which such sums were held by the Company or
such Paying Agent; and, upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such money.

                  Any money deposited with the Trustee or any Paying Agent, or
then held by the Company or the Guarantor, in trust for the payment of the
principal of or any premium or interest on any Security of any series and
remaining unclaimed for two years after such principal, premium or interest has
become due and payable shall be paid to the Company or the Guarantor, as the
case may be, on Company

                                        

                                      -82-


<PAGE>   95



Request, or (if then held by the Company or the Guarantor) shall be discharged
from such trust; and the Holder of such Security shall thereafter, as an
unsecured general creditor, look only to the Company or the Guarantor for
payment thereof, and all liability of the Trustee or such Paying Agent with
respect to such trust money, and all liability of the Company or the Guarantor
as trustee thereof, shall thereupon cease; provided, however, that the Trustee
or such Paying Agent, before being required to make any such repayment, may at
the expense of the Company cause to be published once, in a newspaper published
in the English language, customarily published on each Business Day and of
general circulation in the Borough of Manhattan, the City of New York, notice
that such money remains unclaimed and that, after a date specified therein,
which shall not be less than 30 days from the date of such publication, any
unclaimed balance of such money then remaining will be repaid to the Company or
the Guarantor, as the case may be.

Section 1004.  Statement by Officers as to Default.

                  The Company and the Guarantor will each deliver to the Trustee
within 120 days after the end of each fiscal year of the Guarantor ending after
the date hereof, a certificate signed by the Company's or the Guarantor's, as
the case may be, principal executive officer, principal financial officer or
principal accounting officer stating whether or not to the best knowledge of the
signer thereof the Company or the Guarantor, as the case may be, is in
compliance with all terms, conditions and covenants of this Indenture (without
regard to any period of grace or requirement of notice provided hereunder) and
if the signer has obtained knowledge of any continuing default by the Company or
the Guarantor in the performance, observation or fulfillment of any such term,
condition or covenant, specifying each such default and the nature thereof.

Section 1005.     Limitations on Liens on Common Stock of Principal 
                  Subsidiaries.

                  As long as any of the Securities remains outstanding, the
Guarantor will not, and will not permit any Principal Subsidiary to, issue,
assume, incur or guarantee any indebtedness for borrowed money secured by a
mortgage, pledge, lien or other encumbrance, directly or indirectly, on any of
the Common Stock of a Principal Subsidiary, which Common Stock is owned by the
Guarantor, by the Company or by any Principal Subsidiary, unless the obligations
of the Company under the Securities and, if the Company or the Guarantor so
elects, any other indebtedness of the Company or the Guarantor ranking on a
parity with or prior to the

                                        

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<PAGE>   96



Securities or the Guarantor's obligations under the Guarantees, as the case may
be, shall be secured equally and ratably with, or prior to, such secured
indebtedness for borrowed money so long as it is outstanding and is so secured.

                                 ARTICLE ELEVEN

                            Redemption of Securities

Section 1101.  Applicability of Article.

                  Securities of any series which are redeemable before their
Stated Maturity shall be redeemable in accordance with their terms and (except
as otherwise specified as contemplated by Section 301 for Securities of any
series) in accordance with this Article.

Section 1102.  Election to Redeem; Notice to Trustee.

                  In case of any redemption at the election of the Company of
less than all the Securities of any series, the Company shall, at least 60 days
prior to the Redemption Date fixed by the Company (unless a shorter notice shall
be satisfactory to the Trustee), notify the Trustee of such Redemption Date, of
the principal amount of Securities of such series to be redeemed and, if
applicable, of the tenor of the Securities to be redeemed. In the case of any
redemption of Securities prior to the expiration of any restriction on such
redemption provided in the terms of such Securities or elsewhere in this
Indenture, the Company shall furnish the Trustee with an Officers' Certificate
evidencing compliance with such restriction.

Section 1103.  Selection by Trustee of Securities
                           to Be Redeemed.

                  If less than all the Securities of any series are to be
redeemed (unless all of the Securities of such series and of a specified tenor
are to be redeemed), the particular Securities to be redeemed shall be selected
not more than 45 days prior to the Redemption Date by the Trustee, from the
Outstanding Securities of such series not previously called for redemption, by
such method as the Trustee shall deem fair and appropriate and which may provide
for the selection for redemption of portions (equal to the minimum authorized
denomination for Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that

                                        

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<PAGE>   97



series. If less than all of the Securities of such series and of a specified
tenor are to be redeemed, the particular Securities to be redeemed shall be
selected not more than 45 days prior to the Redemption Date by the Trustee, from
the Outstanding Securities of such series and specified tenor not previously
called for redemption in accordance with the preceding sentence.

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

                  For all purposes of this Indenture, unless the context
otherwise requires, all provisions relating to the redemption of Securities
shall relate, in the case of any Securities redeemed or to be redeemed only in
part, to the portion of the principal amount of such Securities which has been
or is to be redeemed.

Section 1104.  Notice of Redemption.

                  Notice of redemption shall be given by first-class mail,
postage prepaid, mailed not less than 30 nor more than 60 days prior to the
Redemption Date, to each Holder of Securities to be redeemed, at its address
appearing in the Security Register.

                  All notices of redemption shall state:

                  (1)  the Redemption Date,

                  (2)  the Redemption Price,

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

                  (4) that on the Redemption Date the Redemption Price will
         become due and payable upon each such Security to be redeemed and, if
         applicable, that interest thereon will cease to accrue on and after
         said date,

                  (5) the place or places where such Securities are to be
         surrendered for payment of the Redemption Price, and

                                        

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<PAGE>   98



                  (6) that the redemption is for a sink- ing fund, if such is
         the case.

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

Section 1105.  Deposit of Redemption Price.

                  Prior to any Redemption Date, the Company shall deposit with
the Trustee or with a Paying Agent (or, if the Company is acting as its own
Paying Agent, segregate and hold in trust as provided in Section 1003) an amount
of money sufficient to pay the Redemption Price of, and (except if the
Redemption Date shall be an Interest Payment Date) accrued interest on, all the
Securities which are to be redeemed on that date.

Section 1106.  Securities Payable on Redemption Date.

                  Notice of redemption having been given as aforesaid, the
Securities so to be redeemed shall, on the Redemption Date, become due and
payable at the Redemption Price therein specified, and from and after such date
(unless the Company shall default in the payment of the Redemption Price and
accrued interest) such Securities shall cease to bear interest. Upon surrender
of any such Security for redemption in accordance with said notice, such
Security shall be paid by the Company at the Redemption Price, together with
accrued interest to the Redemption Date; provided, however, that, unless
otherwise specified as contemplated by Section 301, installments of interest
whose Stated Maturity is on or prior to the Redemption Date shall be payable to
the Holders of such Securities, or one or more Predecessor Securities,
registered as such at the close of business on the relevant Record Dates
according to their terms and the provisions of Section 307.

                  If any Security called for redemption shall not be so paid
upon surrender thereof for redemption, the principal and any premium shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Security.

Section 1107.  Securities Redeemed in Part.

                  Any Security which is to be redeemed only in part shall be
surrendered at a Place of Payment therefor (with, if the Company or the Trustee
so requires, due endorsement by, or a written instrument of transfer in form
satisfactory

                                        

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<PAGE>   99



to the Company and the Trustee duly executed by, the Holder thereof or his
attorney duly authorized in writing), and the Company shall execute, and the
Trustee shall authenticate and deliver to the Holder of such Security without
service charge, a new Security or Securities of the same series and of like
tenor, of any authorized denomination as requested by such Holder, in aggregate
principal amount equal to and in exchange for the unredeemed portion of the
principal of the Security so surrendered.

                                 ARTICLE TWELVE

                       Defeasance and Covenant Defeasance

Section 1201.     Company's Option to Effect Defeasance or Covenant Defeasance.

                  The Company may elect, at any time, to have either Section
1202 or Section 1203 applied to the Outstanding Securities of any series and the
Guarantees endorsed thereon, upon compliance with the conditions set forth below
in this Article Twelve.

Section 1202.     Defeasance and Discharge.

                  Upon the Company's exercise of the option provided in Section
1201 to have this Section 1202 applied to the Outstanding Securities of any
series and the Guarantees endorsed thereon, the Company and the Guarantor shall
each be deemed to have been discharged from its obligations, and the provisions
of Article Fourteen and Article Sixteen shall cease to be effective, with
respect to the Outstanding Securities of such series and the Guarantees endorsed
thereon as provided in this Section on and after the date the conditions set
forth in Section 1204 are satisfied (hereinafter called "Defeasance"). For this
purpose, such Defeasance means that the Company and the Guarantor shall be
deemed to have paid and discharged the entire indebtedness represented by the
Outstanding Securities of such series and the Guarantees endorsed thereon and to
have satisfied all their other obligations under the Securities of such series,
the Guarantees endorsed thereon and this Indenture insofar as the Securities of
such series and the Guarantees endorsed thereon are concerned (and the Trustee,
at the expense of the Company, shall execute proper instruments acknowledging
the same), subject to the following which shall survive until otherwise
terminated or discharged hereunder: (1) the rights of Holders of Securities of
such series to receive, solely from the trust fund described in Section 1204 and
as more fully set forth in such Section, payments in respect of

                                        

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<PAGE>   100



the principal of and any premium and interest on such Securities of such series
when payments are due, (2) the Company's or the Guarantor's obligations, as the
case may be, with respect to the Securities of such series under Sections 304,
305, 306, 1002 and 1003, (3) the rights, powers, trusts, duties and immunities
of the Trustee hereunder, including, without limitation, its rights under
Section 607 and (4) this Article Twelve. Subject to compliance with this Article
Twelve, the Company may exercise its option provided in Section 1201 to have
this Section 1202 applied to the Outstanding Securities of any series and the
Guarantees endorsed thereon notwithstanding the prior exercise of its option
provided in Section 1201 to have Section 1203 applied to the Outstanding
Securities of such series and the Guarantees endorsed thereon.

Section 1203.     Covenant Defeasance.

                  Upon the Company's exercise of the option provided in Section
1201 to have this Section 1203 applied to the Outstanding Securities of any
series and the Guarantees endorsed thereon, (1) the Guarantor shall be released
from its obligations under Section 1005 and the Company and the Guarantor shall
be released from their obligations under Section 801 and (2) the occurrence of
any event specified in Sections 501(3), 501(4) (with respect to Section 1005 and
Section 801) and 501(5) shall be deemed not to be or result in an Event of
Default, and (3) the provisions of Article Fourteen and Article Sixteen shall
cease to be effective, in each case with respect to the Outstanding Securities
of such series as provided in this Section on and after the date the conditions
set forth in Section 1204 are satisfied (hereinafter called "Covenant
Defeasance"). For this purpose, such Covenant Defeasance means that the Company
and the Guarantor may omit to comply with and shall have no liability in respect
of any term, condition or limitation set forth in any such specified Section (to
the extent so specified in the case of Section 501(4)), whether directly or
indirectly by reason of any reference elsewhere herein to any such Section or by
reason of any reference in any such Section to any other provision herein or in
any other document, but the remainder of this Indenture and the Securities of
such series shall be unaffected thereby.

Section 1204.     Conditions to Defeasance or Covenant Defeasance.

                  The following shall be the conditions to application of either
Section 1202 or Section 1203 to the Outstanding Securities of any series:

                                        

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<PAGE>   101



                  (1) The Company or the Guarantor shall irrevocably have
         deposited or caused to be deposited with the Trustee (or another
         trustee that satisfies the requirements contemplated by Section 609 and
         agrees to comply with the provisions of this Article Twelve applicable
         to it) as trust funds in trust for the purpose of making the following
         payments, specifically pledged as security for, and dedicated solely
         to, the benefit of the Holders of Outstanding Securities of such
         series, (A) in the case of Securities of such series denominated in
         U.S. dollars, (i) money in an amount, or (ii) U.S. Government
         Obligations that through the scheduled payment of principal and
         interest in respect thereof in accordance with their terms will
         provide, not later than one day before the due date of any payment,
         money in an amount, or (iii) a combination thereof, in each case
         sufficient, in the opinion of a nationally recognized firm of
         independent public accountants expressed in a written certification
         thereof delivered to the Trustee, to pay and discharge, and which shall
         be applied by the Trustee (or any such other qualifying trustee) to pay
         and discharge, the principal of and any premium and interest on the
         Securities of such series on the respective Stated Maturities, in
         accordance with the terms of this Indenture and the Securities of such
         series or (B) in the case of Securities of such series denominated in a
         currency other than the U.S. dollar, (i) money in such currency in an
         amount, or (ii) Foreign Government Obligations that through the
         scheduled payment of principal and interest in respect thereof in
         accordance with their terms will provide, not later than one day before
         the due date of any payment, money in such currency in an amount, or
         (iii) a combination thereof, in each case sufficient, in the opinion of
         a nationally recognized firm of independent public accountants
         expressed in a written certification thereof delivered to the Trustee,
         to pay and discharge, and which shall be applied by the Trustee (or any
         such other qualifying trustee) to pay and discharge, the principal of
         and any premium and interest on the Securities of such series on the
         respective Stated Maturities, in accordance with the terms of this
         Indenture and the Securities of such series. As used herein, (1) "U.S.
         Government Obligation" means (x) any security that is (i) a direct
         obligation of the United States of America for the payment of which
         full faith and credit of the United States of America is pledged or
         (ii) an obligation of a Person controlled or supervised by and acting
         as an agency or instrumentality for the United States of America the
         payment of which is unconditionally

                                        

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<PAGE>   102



         guaranteed as a full faith and credit obligation by the United States
         of America, which, in either case (i) or (ii), is not callable or
         redeemable at the option of the issuer thereof, and (y) any depositary
         receipt issued by a bank (as defined in Section 3(a)(2) of the
         Securities Act of 1933, as amended) as custodian with respect to any
         specific payment of principal of or interest on any such U.S.
         Government Obligation specified in Clause (x) and held by such
         custodian for the account of the holder of such depositary receipt, or
         with respect to any specific payment of principal of or interest on any
         such U.S. Government Obligation, provided that (except as required by
         law) such custodian is not authorized to make any deduction from the
         amount payable to the Holder of such depositary receipt from any amount
         received by the custodian in respect of the U.S. Government Obligation
         or the specific payment of principal or interest evidenced by such
         depositary receipt and (2) "Foreign Government Obligation" means (x)
         any security that is (i) a direct obligation of the government that
         issued such currency for the payment of which full faith and credit of
         such government is pledged or (ii) an obligation of a Person controlled
         or supervised by and acting as an agency or instrumentality for such
         government the payment of which is unconditionally guaranteed as a full
         faith and credit obligation by such government, which, in either case
         (i) or (ii), is not callable or redeemable at the option of the issuer
         thereof, and (y) any depositary receipt issued by a bank (as defined in
         Section 3(a)(2) of the Securities Act of 1933, as amended) as custodian
         with respect to any specific payment of principal of or interest on any
         such Foreign Government Obligation specified in Clause (x) and held by
         such custodian for the account of the holder of such depositary
         receipt, or with respect to any specific payment of principal of or
         interest on any such Foreign Government Obligation, provided that
         (except as required by law) such custodian is not authorized to make
         any deduction from the amount payable to the Holder of such depositary
         receipt from any amount received by the custodian in respect of the
         Foreign Government Obligation or the specific payment of principal or
         interest evidenced by such depositary receipt.

                  (2) In the case of an election under Section 1202, the Company
         shall have delivered to the Trustee an Opinion of Counsel stating that
         the Holders of the Outstanding Securities of such series will not
         recognize gain or loss for Federal income tax purposes as a result of
         the deposit, Defeasance and discharge to be

                                        

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<PAGE>   103



         effected with respect to the Securities of such series and will be
         subject to Federal income tax on the same amount, in the same manner
         and at the same times as would be the case if such deposit, Defeasance
         and discharge were not to occur.

                  (3) In the case of an election under Section 1203, the Company
         shall have delivered to the Trustee an Opinion of Counsel to the effect
         that the Holder of the Outstanding Securities of such series will not
         recognize gain or loss for Federal income tax purposes as result of the
         deposit and Covenant Defeasance to be effected with respect to the
         Securities of such series and will be subject to Federal income tax on
         the same amount, in the same manner and at the same times as would be
         the case if such deposit and Covenant Defeasance were not to occur.

                  (4) The Company shall have delivered to the Trustee an
         Officers' Certificate to the effect that the Securities of such series,
         if then listed on any securities exchange, will not be delisted as a
         result of such deposit.

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

                  (6) The Company shall have delivered to the Trustee an
         Officer's Certificate and an Opinion of Counsel, each stating that all
         conditions precedent with respect to such Defeasance or Covenant
         Defeasance have been complied with.

                  (7) Such Defeasance or Covenant Defeasance shall not result in
         the trust arising from such deposit constituting an investment company
         within the meaning of the Investment Company Act of 1940, as amended,
         unless such trust shall be qualified under such Act or exempt from
         regulation thereunder.

                  (8) At the time of such deposit: (A) no default in the payment
         of principal of (or premium, if any) or interest on any Senior Debt of
         the Company or Senior Debt of the Guarantor shall have occurred and be
         con-

                                        

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<PAGE>   104



         tinuing or (B) no other event of default with respect to any Senior
         Debt of the Company or Senior Debt of the Guarantor shall have occurred
         and be continuing and shall have resulted in such Senior Debt of the
         Company or Senior Debt of the Guarantor becoming or being declared due
         and payable prior to the date on which it would otherwise have become
         due and payable, or, in the case of either Clause (A) or Clause (B)
         above, each such default or event of default shall have been cured or
         waived or shall have ceased to exist.

Section 1205.     Deposited Money and U.S. Government Obligations or Foreign
                  Government Obligations to be Held In Trust; Other
                  Miscellaneous Provisions.

                  Subject to the provisions of the last paragraph of Section
1003, all money and U.S. Government Obligations or Foreign Government
Obligations (including the proceeds thereof) deposited with the Trustee or other
qualifying trustee (solely for purposes of this Section and Section 1206, the
Trustee and any such other trustee are referred to collectively as the
"Trustee") pursuant to Section 1204 in respect of the Securities of any series
shall be held in trust and applied by the Trustee, in accordance with the
provisions of the Securities of such series and this Indenture, to the payment,
either directly or through any such Paying Agent (including the Company or the
Guarantor acting as its own Paying Agent) as the Trustee may determine, to the
Holders of Securities of such series, of all sums due and to become due thereon
in respect of principal and any premium and interest, but money so held in trust
need not be segregated from other funds except to the extent required by law.
Money so held in trust shall not be subject to the provisions of Article
Fourteen or of Article Sixteen.

                  The Company shall pay and indemnify the Trustee against any
tax, fee or other charge imposed on or assessed against the U.S. Government
Obligations or Foreign Government Obligations deposited pursuant to Section 1204
or the principal and interest received in respect thereof other than any such
tax, fee or other charge that by law is for the account of the Holders of
Outstanding Securities.

                  Anything in this Article Twelve to the contrary
notwithstanding, the Trustee shall deliver or pay to the Company or the
Guarantor, as the case may be, from time to time upon Company Request any money
or U.S. Government Obligations or Foreign Government Obligations held by it as
provided in Section 1204 with respect to Securities of any

                                        

                                      -92-


<PAGE>   105



series that, in the opinion of a nationally recognized firm of independent
public accountants expressed in a written certification thereof delivered to the
Trustee, are in excess of the amount thereof that would then be required to be
deposited to effect an equivalent Defeasance or Covenant Defeasance with respect
to the Securities of such series and the Guarantees endorsed thereon.

Section 1206.     Reinstatement.

                  If the Trustee or the Paying Agent is unable to apply any
money in accordance with this Article Twelve with respect to the Securities of
any series by reason of any order or judgment of any court or governmental
authority enjoining, restraining or otherwise prohibiting such application, then
the Company's and the Guarantor's obligations under this Indenture and the
Securities of such series and the Guarantees endorsed thereon shall be revived
and reinstated as though no deposit had occurred pursuant to this Article Twelve
with respect to Securities of such series until such time as the Trustee or
Paying Agent is permitted to apply all money held in trust pursuant to Section
1205 with respect to Securities of such series in accordance with this Article
Twelve; provided, however, that if the Company makes any payment of principal of
or any premium or interest on any Security of such series following the
reinstatement of its obligations or if the Guarantor makes any payment in
respect thereof pursuant to its Guarantee of such Securities of such series, the
Company or the Guarantor, as the case may be, shall be subrogated to the rights
of the Holders of Securities of such series to receive such payment from the
money so held in trust.

                                ARTICLE THIRTEEN

                                  Sinking Funds

Section 1301.     Applicability of Article.

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

                  The minimum amount of any sinking fund payment provided for by
the terms of Securities of any series is herein referred to as a "mandatory
sinking fund payment", and any payment in excess of such minimum amount provided
for by the terms of Securities of any series is herein referred to as an
"optional sinking fund payment". If

                                        

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<PAGE>   106



provided for by the terms of Securities of any series, the cash amount of any
sinking fund payment may be subject to reduction as provided in Section 1302.
Each sinking fund payment shall be applied to the redemption of Securities of
any series as provided for by the terms of Securities of such series.

Section 1302.     Satisfaction of Sinking Fund Payments with Securities.

                  The Company (1) may deliver Outstanding Securities of a series
(other than any previously called for redemption) and (2) may apply as a credit
Securities of a series which have been acquired or redeemed either at the
election of the Company pursuant to the terms of such Securities or through the
application of permitted optional sinking fund payments pursuant to the terms of
such Securities or otherwise, in each case in satisfaction of all or any part of
any sinking fund payment with respect to the Securities of such series required
to be made pursuant to the terms of such Securities as provided for by the terms
of such series; provided that such Securities have not been previously so
credited. Such Securities shall be received and credited for such purpose by the
Trustee at the Redemption Price specified in such Securities for redemption
through operation of the sinking fund and the amount of such sinking fund
payment shall be reduced accordingly.

Section 1303.     Redemption of Securities for Sinking Fund.

                  Not less than 45 days prior to each sinking fund payment date
for any series of Securities, the Company will deliver to the Trustee an
Officers' Certificate specifying the amount of the next ensuing sinking fund
payment for that series pursuant to the terms of that series, the portion
thereof, if any, which is to be satisfied by payment of cash and the portion
thereof, if any, which is to be satisfied by delivering and crediting Securities
of that series pursuant to Section 1302 and will also deliver to the Trustee any
Securities to be so delivered. Not less than 15 nor more than 45 days before
each such sinking fund payment date the Trustee shall select the Securities to
be redeemed upon such sinking fund payment date in the manner specified in
Section 1103 and cause notice of the redemption thereof to be given in the name
of and at the expense of the Company in the manner provided in Section 1104.
Such notice having been duly given, the redemption of such Securities shall be
made upon the terms and in the manner stated in Sections 1106 and 1107.

                                        

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<PAGE>   107



                                ARTICLE FOURTEEN

                           Subordination of Securities

Section 1401.     Securities Subordinate to Senior Debt of the Company.

                  The Company covenants and agrees, and each Holder of a
Security, by its acceptance thereof, likewise covenants and agrees, that, to the
extent and in the manner hereinafter set forth in this Article (subject to the
provisions of Article Four and Article Twelve), the payment of the principal of
(and premium, if any) and interest on each and all of the Securities are hereby
expressly made subordinate and subject in right of payment to the prior payment
in full of all amounts then due and payable in respect of all Senior Debt of the
Company.

Section 1402.  Payment Over of Proceeds Upon Dissolution, Etc. of the Company.

                  In the event of (a) any insolvency or bankruptcy case or
proceeding, or any receivership, liquidation, arrangement, reorganization, debt
restructuring or other similar case or proceeding in connection with any
insolvency or bankruptcy proceeding, relative to the Company or to its assets,
or (b) any liquidation, dissolution or other winding up of the Company, whether
voluntary or involuntary and whether or not involving insolvency or bankruptcy,
or (c) any assignment for the benefit of creditors or any other marshalling of
assets and liabilities of the Company, then and in any such event specified in
(a), (b) or (c) above (each such event, if any, herein sometimes referred to as
a "Proceeding") the holders of Senior Debt of the Company shall be entitled to
receive payment in full of all amounts due or to become due on or in respect of
all Senior Debt of the Company, or provision shall be made for such payment in
cash or cash equivalents or otherwise in a manner satisfactory to the holders of
Senior Debt of the Company, before the Holders of the Securities are entitled to
receive any payment or distribution of any kind or character, whether in cash,
property or securities (including any payment or distribution which may be
payable or deliverable by reason of the payment of any other Debt of the Company
subordinated to the payment of the Securities, such payment or distribution
being hereinafter referred to as "Junior Subordinated Payment"), on account of
principal of (or premium, if any) or interest on the Securities or on account of
the purchase or other acquisition of Securities by the Company or any Subsidiary
of the Company and to that end the holders of Senior Debt of the Company shall
be entitled to

                                        

                                      -95-


<PAGE>   108



receive, for application to the payment thereof, any payment or distribution of
any kind or character, whether in cash, property or securities, including any
Junior Subordinated Payment, which may be payable or deliverable in respect of
the Securities in any such Proceeding.

                  In the event that, notwithstanding the foregoing provisions of
this Section, the Trustee or the Holder of any Security shall have received any
payment or distribution of assets of the Company of any kind or character,
whether in cash, property or securities, including any Junior Subordinated
Payment, before all Senior Debt of the Company is paid in full or payment
thereof is provided for in cash or cash equivalents or otherwise in a manner
satisfactory to the holders of Senior Debt of the Company, and if such fact
shall, at or prior to the time of such payment or distribution, have been made
known to the Trustee or, as the case may be, such Holder, then and in such event
such payment or distribution shall be paid over or delivered forthwith to the
trustee in bankruptcy, receiver, liquidating trustee, custodian, assignee, agent
or other Person making payment or distribution of assets of the Company for
application to the payment of all Senior Debt of the Company remaining unpaid,
to the extent necessary to pay all Senior Debt of the Company in full, after
giving effect to any concurrent payment or distribution to or for the holders of
Senior Debt of the Company. Any taxes that have been withheld or deducted from
any payment or distribution in respect of the Securities, or any taxes that
ought to have been withheld or deducted from any such payment or distribution
that have been remitted to the relevant taxing authority, shall not be
considered to be an amount that the Trustee or the Holder of any Security
receives for purposes of this Section.

                  For purposes of this Article only, the words "any payment or
distribution of any kind or character, whether in cash, property or securities"
shall not be deemed to include shares of stock of the Company as reorganized or
readjusted, or securities of the Company or any other corporation provided for
by a plan of reorganization or readjustment which securities are subordinated in
right of payment to all then outstanding Senior Debt of the Company to
substantially the same extent as the Securities are so subordinated as provided
in this Article. The consolidation of the Company with, or the merger of the
Company into, another Person or the liquidation or dissolution of the Company
following the sale of all or substantially all of its properties and assets as
an entirety to another Person or the liquidation or dissolution of the Company
following the sale of all or substantially all of its properties and assets as
an

                                        

                                      -96-


<PAGE>   109



entirety to another Person upon the terms and conditions set forth in Article
Eight shall not be deemed a Proceeding for the purposes of this Section if the
Person formed by such consolidation or into which the Company is merged or the
Person which acquires by sale such properties and assets as an entirety, as the
case may be, shall, as a part of such consolidation, merger, or sale comply with
the conditions set forth in Article Eight.

Section 1403.     Prior Payment to Senior Debt of the Company Upon Acceleration
                  of Securities.

                  In the event that any Securities are declared due and payable
before their Stated Maturity, then and in such event the holders of the Senior
Debt of the Company outstanding at the time such Securities so become due and
payable shall be entitled to receive payment in full of all amounts due on or in
respect of such Senior Debt of the Company, or provision shall be made for such
payment in cash or cash equivalents or otherwise in a manner satisfactory to the
holders of Senior Debt of the Company, before the Holders of the Securities are
entitled to receive any payment (including any payment which may be payable by
reason of the payment of any other indebtedness of the Company being
subordinated to the payment of the Securities) by the Company on account of the
principal of (or premium, if any) or interest on the Securities or on account of
the purchase or other acquisition of Securities by the Company or any
Subsidiary; provided, however, that nothing in this Section shall prevent the
satisfaction of any sinking fund payment in accordance with Article Thirteen by
delivering and crediting pursuant to Section 1302 Securities which have been
acquired (upon redemption or otherwise) prior to such declaration of
acceleration.

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

                  The provisions of this Section shall not apply to any payment
with respect to which Section 1402 would be applicable.

                                        

                                      -97-


<PAGE>   110



Section 1404.      No Payment When Senior Debt of the Company in Default.

                  (a) In the event and during the continuation of any default in
the payment of principal of (or premium, if any) or interest on any Senior Debt
of the Company, or in the event that any event of default with respect to any
Senior Debt of the Company shall have occurred and be continuing and shall have
resulted in such Senior Debt of the Company becoming or being declared due and
payable prior to the date on which it would otherwise have become due and
payable, unless and until such event of default shall have been cured or waived
or shall have ceased to exist and such acceleration shall have been rescinded or
annulled, or (b) in the event any judicial proceeding shall be pending with
respect to any such default in payment or such event of default, then no payment
(including any payment which may be payable by reason of the payment of any
other indebtedness of the Company being subordinated to the payment of the
Securities) shall be made by the Company on account of principal of (or premium,
if any) or interest on the Securities or on account of the purchase or other
acquisition of Securities by the Company or any Subsidiary; provided, however,
that nothing in this Section shall prevent the satisfaction of any sinking fund
payment in accordance with Article Thirteen by delivering and crediting pursuant
to Section 1302 Securities which have been acquired (upon redemption or
otherwise) prior to such default in payment or event of default.

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

                  The provisions of this Section shall not apply to any payment
with respect to which Section 1402 would be applicable.

Section 1405.     Payment Permitted If No Default.

                  Nothing contained in this Article or elsewhere in this
Indenture or in any of the Securities shall prevent (a) the Company, at any time
except during the pendency of any Proceeding referred to in Section 1402 or
under the conditions described in Sections 1403 and 1404, from making payments
at any time of principal of (and premium, if any)

                                        

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or interest on the Securities, or (b) the application by the Trustee of any
money deposited with it hereunder to the payment of or on account of the
principal of (and premium, if any) or interest on the Securities or the
retention of such payment by the Holders, if, at the time of such application by
the Trustee, it did not have knowledge that such payment would have been
prohibited by the provisions of this Article.

Section 1406.     Subrogation to Rights of Holders of Senior Debt of the
                  Company.

                  Subject to the payment in full of all Senior Debt of the
Company, or the provision for such payment in cash or cash equivalents or
otherwise in a manner satisfactory to the holders of Senior Debt of the Company,
the Holders of the Securities shall be subrogated to the extent of the payments
or distributions made to the holders of such Senior Debt of the Company pursuant
to the provisions of this Article (equally and ratably with the holders of all
other indebtedness of the Company which by its express terms is subordinated to
indebtedness of the Company to substantially the same extent as the Securities
are subordinated to the Senior Debt of the Company and is entitled to like
rights of subrogation by reason of any payments or distributions made to holders
of such Senior Debt of the Company) to the rights of the holders of such Senior
Debt of the Company to receive payments and distributions of cash, property and
securities of the Company applicable to the Senior Debt of the Company until the
principal of (and premium, if any) and interest on the Securities shall be paid
in full. If the Trustee or the Holders of the Securities are not for any reason
entitled to be subrogated to the rights of holders of Senior Debt of the Company
in respect of such payment or distribution, then the Trustee or the Holders of
the Securities may require each holder of Senior Debt of the Company to whom any
such payment or distribution is made as a condition to such payment or
distribution to assign its Senior Debt of the Company to the extent of such
payment or distribution and all rights with respect thereto to the Trustee on
behalf of the Holders. Such assignment shall not be effective until such time as
all Senior Debt of the Company has been paid in full or payment thereof provided
for. For purposes of such subrogation or assignment, no payments or
distributions to the holders of the Senior Debt of the Company of any cash,
property or securities to which the Holders of the Securities or the Trustee
would be entitled except for the provisions of this Article, and no payments
over pursuant to the provisions of this Article to the holders of Senior Debt of
the Company by Holders of the Securities or the Trustee, shall, as among the
Company, its creditors other than hold-

                                        

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<PAGE>   112



ers of Senior Debt of the Company, and the Holders of the Securities, be deemed
to be a payment or distribution by the Company to or on account of the Senior
Debt of the Company.

Section 1407.              Provisions Solely to Define Relative Rights.

                  The provisions of this Article are and are intended solely for
the purpose of defining the relative rights of the Holders of the Securities on
the one hand and the holders of Senior Debt of the Company on the other hand.
Nothing contained in this Article or elsewhere in this Indenture or in the
Securities is intended to or shall (a) impair, as among the Company, its
creditors other than holders of Senior Debt of the Company, and the Holders of
the Securities, the obligations of the Company, which are absolute and
unconditional (and which, subject to the rights under this Article of the
holders of Senior Debt of the Company, are intended to rank equally with all
other general unsecured obligations of the Company), to pay to the Holders of
the Securities the principal of (and premium, if any) and interest on the
Securities as and when the same shall become due and payable in accordance with
their terms; or (b) affect the relative rights against the Company of the
Holders of the Securities and creditors of the Company other than the holders of
Senior Debt of the Company; or (c) prevent the Trustee or the Holder of any
Security from exercising all remedies otherwise permitted by applicable law upon
default under this Indenture including, without limitation, filing and voting
claims in any Proceeding, subject to the rights, if any, under this Article of
the holders of Senior Debt of the Company to receive cash, property and
securities otherwise payable or deliverable to the Trustee or such Holder.

                  Without limiting the generality of the foregoing, nothing
contained in this Article will restrict the right of the Trustee or the Holders
of Securities of any series to take any action to declare the Securities of such
series to be due and payable prior to their stated maturity pursuant to Section
502 or to pursue any rights or remedies hereunder.

Section 1408.              Trustee to Effectuate Subordination.

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

                                        

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Section 1409.  No Waiver of Subordination Provisions.

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

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

Section 1410.              Notice to Trustee.

                  The Company shall give prompt written notice to the Trustee of
any fact known to the Company which would prohibit the making of any payment to
or by the Trustee in respect of the Securities. Notwithstanding the provisions
of this Article or any other provision of this Indenture, the Trustee shall not
be charged with knowledge of the existence of any facts which would prohibit the
making of any payment to or by the Trustee in respect of the Securities, unless
and until the Trustee shall have received written notice thereof from the
Company or a holder of Senior Debt of the Company or from any trustee, agent or
representative therefor; and, prior to the receipt of any such written notice,
the Trustee, subject to the provisions of Section 601, shall be entitled in all
respects to assume that no such facts exist; provided, however, that if the

                                        

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Trustee shall not have received the notice provided for in this Section at least
two Business Days prior to the date upon which by the terms hereof any money may
become payable for any purpose (including, without limitation, the payment of
the principal of (and premium, if any) or interest on any Security), then,
anything herein contained to the contrary notwithstanding, the Trustee shall
have full power and authority to receive such money and to apply the same to the
purpose for which such money was received and shall not be affected by any
notice to the contrary which may be received by it within two Business Days
prior to such date.

                  Subject to the provisions of Section 601, the Trustee shall be
entitled to rely on the delivery to it of a written notice by a Person
representing himself or herself to be a holder of Senior Debt of the Company (or
a trustee, agent or representative therefor) to establish that such notice has
been given by a holder of Senior Debt of the Company (or a trustee, agent or
representative therefor). In the event that the Trustee determines in good faith
that further evidence is required with respect to the right of any Person as a
holder of Senior Debt of the Company to participate in any payment or
distribution pursuant to this Article, the Trustee may request such Person to
furnish evidence to the reasonable satisfaction of the Trustee as to the amount
of Senior Debt of the Company held by such Person, the extent to which such
Person is entitled to participate in such payment or distribution and any other
facts pertinent to the rights of such Person under this Article, and if such
evidence is not furnished, the Trustee may defer any payment to such Person
pending judicial determination as to the right of such Person to receive such
payment.

Section 1411.    Reliance on Judicial Order or Certificate of Liquidating Agent.

                  Upon any payment or distribution of assets of the Company
referred to in this Article, the Trustee, subject to the provisions of Section
601, and the Holders of the Securities shall be entitled to rely upon any order
or decree entered by any court of competent jurisdiction in which such
Proceeding is pending, or a certificate of the trustee in bankruptcy, receiver,
liquidating trustee, custodian, assignee for the benefit of creditors, agent or
other Person making such payment or distribution, delivered to the Trustee or to
the Holders of Securities, for the purpose of ascertaining the Persons entitled
to participate in such payment or distribution, the holders of the Senior Debt
of the Company and other indebtedness of the Company, the amount thereof or
payable thereon, the amount or amounts

                                        

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<PAGE>   115



paid or distributed thereon and all other facts pertinent thereto or to this
Article.

Section 1412.     Trustee Not Fiduciary For Holders of Senior Debt of the
                  Company.

                  The Trustee, in its capacity as trustee under this Indenture,
shall not be deemed to owe any fiduciary duty to the holders of Senior Debt of
the Company and shall not be liable to any such holders if it shall in good
faith mistakenly pay over or distribute to Holders of Securities or to the
Company or to any other Person cash, property or securities to which any holders
of Senior Debt of the Company shall be entitled by virtue of this Article or
otherwise.

Section 1413.     Rights of Trustee as Holder of Senior Debt of the Company;
                  Preservation of Trustee's Rights.

                  The Trustee in its individual capacity shall be entitled to
all the rights set forth in this Article with respect to any Senior Debt of the
Company which may at any time be held by it, to the same extent as any other
holder of Senior Debt of the Company, and nothing in this Indenture shall
deprive the Trustee of any of its rights as such holder.

                  Nothing in this Article shall apply to claims of, or payments
to, the Trustee under or pursuant to Section 607.

Section 1414.  Article Applicable to Paying Agents.

                  In case at any time any Paying Agent other than the Trustee
shall have been appointed by the Company and be then acting hereunder, the term
"Trustee" as used in this Article shall in such case (unless the context
otherwise requires) be construed as extending to and including such Paying Agent
within its meaning as fully for all intents and purposes as if such Paying Agent
were named in this Article in addition to or in place of the Trustee.

Section 1415.  Defeasance of This Article Fourteen.

                  The subordination of the Securities provided by this Article
Fourteen is expressly made subject to the provisions for defeasance or covenant
defeasance in Article Twelve and, anything herein to the contrary
notwithstanding, upon the effectiveness of any such defeasance or covenant

                                        

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<PAGE>   116



defeasance, the Securities then outstanding shall thereupon cease to be
subordinated pursuant to this Article Fourteen.

                                 ARTICLE FIFTEEN

                             Guarantee of Securities

SECTION 1501.     Guarantee.

                  The Guarantor hereby unconditionally guarantees to each Holder
of a Security of each series of the Company authenticated and delivered by the
Trustee or an Authenticating Agent the due and punctual payment of the principal
of (premium, if any) and interest on such Security and the due and punctual
payment of any sinking fund payments provided for pursuant to the terms of such
Security, when and as the same shall become due and payable, whether at Stated
Maturity, by declaration of acceleration, call for redemption or otherwise
according to the terms of such Security and of this Indenture (the "Guaranteed
Obligations"). In case of default by the Company in the payment of any such
principal, premium, interest or sinking fund payment, the Guarantor agrees duly
and punctually to make any such payment when and as the same shall become due
and payable, whether at the Stated Maturity, by declaration of acceleration,
call for redemption or otherwise, and as if such payment were made by the
Company. The Guarantor hereby agrees that its obligations hereunder shall be as
if it were principal debtor and not merely surety, and shall be absolute and
unconditional irrespective of, and shall be unaffected by, the validity,
legality or enforceability of any Security of any series or this Indenture, the
absence of any action to enforce the same or any waiver, modification or
indulgence or consent granted to the Company with respect thereto by the Holder
of any Security of any series or the Trustee, the recovery of any judgment
against the Company or any action to enforce the same, or any other
circumstances which may otherwise constitute a legal or equitable discharge of a
surety or guarantor; provided, however, that notwithstanding the foregoing, no
such waiver, modification or indulgence shall, without the consent of the
Guarantor, increase the principal amount of a Security or the interest rate
thereon or increase any premium payable upon redemption thereof. The Guarantor
hereby waives diligence, presentment, demand of payment, filing of claims with a
court in the event of merger or bankruptcy of the Company, any right of set-off
or counterclaim, any right to require a proceeding first against the Company,
protect or notice with respect to any Security or the indebtedness evidenced

                                        

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<PAGE>   117



thereby or with respect to any sinking fund payment required pursuant to the
terms of a Security issued under this Indenture and all demands whatsoever, and
covenants that this Guarantee will not be discharged as to any Security except
by payment in full of the principal of (premium, if any) and interest on such
Security.

Section 1502.  Subrogation.

                  The Guarantor shall be subrogated to all rights of the Holder
of a Security against the Company in respect of any amounts paid to such Holder
by the Guarantor pursuant to the provisions of this Guarantee; provided,
however, that the Guarantor shall not, without the consent of all Holders of
Securities of such series, be entitled to enforce, or to receive, any payments
arising out of or based upon, such right of subrogation until the principal of
(and premium, if any) and interest then due and payable on all Securities of the
relevant series shall have been irrevocably paid in full in accordance with the
terms of such Securities.

Section 1503.  Reinstatement.

                  The Guarantee of the Guarantor is a guarantee of payment when
due and not of collection. The Guarantee shall continue to be effective, or be
reinstated, as the case may be, in respect of any Security if at any time
payment, or any part thereof, of such Security is rescinded or must otherwise be
restored or returned by the Holder of such Security or any trustee for said
Holder upon the insolvency, bankruptcy, dissolution, liquidation or
reorganization of the Company or any other entity, or upon or as a result of the
appointment of a receiver, intervenor or conservator of, or trustee or similar
officer for, the Company or any other entity or any substantial part of their
respective property, or otherwise, all as though such payments had not been
made.

Section 1504.  Execution and Delivery of Guarantees.

                  To evidence its guarantee set forth in Section 1501, the
Guarantor hereby agrees to execute, subject to Section 201, the Guarantee in a
form established pursuant to Section 206, to be endorsed on each Security
authenticated and delivered by the Trustee. Each such Guarantee shall be
executed by the Guarantor as provided in Section 303.

                  The delivery of any Security by the Trustee, after the
authentication thereof hereunder, shall constitute due delivery of the Guarantee
endorsed thereon on behalf of the Guarantor.

                                        

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                                 ARTICLE SIXTEEN

                           Subordination of Guarantees

Section 1601.     Guarantees Subordinate to Senior Debt of the Guarantor.

                  The Guarantor covenants and agrees, and each Holder of a
Security, by its acceptance of the Securities, likewise covenants and agrees,
that, to the extent and in the manner hereinafter set forth in this Article
(subject to the provisions of Article Four and Article Twelve), all obligations
of the Guarantor under the Guarantees are hereby expressly made subordinate and
subject in right of payment to the prior payment in full of all amounts then due
and payable in respect of all Senior Debt of the Guarantor.

Section 1602.     Payment Over of Proceeds Upon Dissolution, Etc. of the
                  Guarantor

                  In the event of (a) any insolvency or bankruptcy case or
proceeding, or any receivership, liquidation, arrangement, reorganization, debt
restructuring or other similar case or proceeding in connection with any
insolvency or bankruptcy proceeding, relative to the Guarantor or to its assets,
or (b) any liquidation, dissolution or other winding up of the Guarantor,
whether voluntary or involuntary and whether or not involving insolvency or
bankruptcy, or (c) any assignment for the benefit of creditors or any other
marshalling of assets and liabilities of the Guarantor, then and in any such
event specified in (a), (b) or (c) above (each such event, if any, herein
sometimes referred to as a "Guarantor Proceeding") the holders of Senior Debt of
the Guarantor shall be entitled to receive payment in full of all amounts due or
to become due on or in respect of all Senior Debt of the Guarantor, or provision
shall be made for such payment in cash or cash equivalents or otherwise in a
manner satisfactory to the holders of Senior Debt of the Guarantor, before the
Holders of the Securities are entitled to receive any payment or distribution of
any kind or character, whether in cash, property or securities (including any
payment or distribution which may be payable or deliverable by reason of the
payment of any other Debt of the Guarantor subordinated to the payment of the
Guarantees, such payment or distribution being hereinafter referred to as
"Guarantor Junior Subordinated Payment"), pursuant to the Guarantee of the
Guarantor on account of principal of (or premium, if any) or interest on the
Securities or on account of the purchase or other acquisition of Securities by
the Guarantor

                                        

                                      -106-


<PAGE>   119



or any Subsidiary of the Guarantor and to that end the holders of Senior Debt of
the Guarantor shall be entitled to receive, for application to the payment
thereof, any payment or distribution of any kind or character, whether in cash,
property or securities, including any Guarantor Junior Subordinated Payment,
which may be payable or deliverable pursuant to the Guarantee of the Guarantor
in respect of the Securities in any such Proceeding.

                  In the event that, notwithstanding the foregoing provisions of
this Section, the Trustee or the Holder of any Security shall have received on
account of the Securities or the Guarantee of the Guarantor any payment or
distribution of assets of the Guarantor of any kind or character, whether in
cash, property or securities, including any Guarantor Junior Subordinated
Payment, before all Senior Debt of the Guarantor is paid in full or payment
thereof is provided for in cash or cash equivalents or otherwise in a manner
satisfactory to the holders of Senior Debt of the Guarantor, and if such fact
shall, at or prior to the time of such payment or distribution, have been made
known to the Trustee or, as the case may be, such Holder, then and in such event
such payment or distribution shall be paid over or delivered forthwith to the
trustee in bankruptcy, receiver, liquidating trustee, custodian, assignee, agent
or other Person making payment or distribution of assets of the Guarantor for
application to the payment of all Senior Debt of the Guarantor remaining unpaid,
to the extent necessary to pay all Senior Debt of the Guarantor in full, after
giving effect to any concurrent payment or distribution to or for the holders of
Senior Debt of the Guarantor. Any taxes that have been withheld or deducted from
any payment or distribution in respect of the Securities or the Guarantees, or
any taxes that ought to have been withheld or deducted from any such payment or
distribution that have been remitted to the relevant taxing authority, shall not
be considered to be an amount that the Trustee or the Holder of any Security
receives for purposes of this Section.

                  For purposes of this Article only, the words "any payment or
distribution of any kind or character, whether in cash, property or securities"
shall not be deemed to include shares of stock of the Guarantor as reorganized
or readjusted, or securities of the Guarantor or any other corporation provided
for by a plan of reorganization or readjustment which securities are
subordinated in right of payment to all then outstanding Senior Debt of the
Guarantor to substantially the same extent as the Guarantees are so subordinated
as provided in this Article. The consolidation of the Guarantor with, or the
merger of the Guarantor into, another Person or the liquidation or dissolution
of the

                                        

                                      -107-


<PAGE>   120



Guarantor following the sale of all or substantially all of its properties and
assets as an entirety to another Person or the liquidation or dissolution of the
Guarantor following the sale of all or substantially all of its properties and
assets as an entirety to another Person upon the terms and conditions set forth
in Article Eight shall not be deemed a Guarantor Proceeding for the purposes of
this Section if the Person formed by such consolidation or into which the
Guarantor is merged or the Person which acquires by sale such properties and
assets as an entirety, as the case may be, shall, as a part of such
consolidation, merger, or sale comply with the conditions set forth in Article
Eight.

Section 1603.     Prior Payment to Senior Debt of the Guarantor Upon
                  Acceleration of Securities.

                  In the event that any Securities are declared due and payable
before their Stated Maturity, then and in such event the holders of the Senior
Debt of the Guarantor outstanding at the time such Securities so become due and
payable shall be entitled to receive payment in full of all amounts due on or in
respect of such Senior Debt of the Guarantor, or provision shall be made for
such payment in cash or cash equivalents or otherwise in a manner satisfactory
to the holders of Senior Debt of the Guarantor, before the Holders of the
Securities are entitled to receive any payment (including any payment which may
be payable by reason of the payment of any other indebtedness of the Guarantor
being subordinated to the payment of the Guarantees) pursuant to the Guarantee
of the Guarantor on account of the principal of (or premium, if any) or interest
on the Securities or on account of the purchase or other acquisition of
Securities by the Guarantor or any Subsidiary; provided, however, that nothing
in this Section shall prevent the satisfaction of any sinking fund payment in
accordance with Article Thirteen by delivering and crediting pursuant to Section
1302 Securities which have been acquired (upon redemption or otherwise) prior to
such declaration of acceleration.

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

                                        

                                      -108-


<PAGE>   121



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

Section 1604.         No Payment When Senior Debt of the Guarantor in Default.

                  (a) In the event and during the continuation of any default in
the payment of principal of (or premium, if any) or interest on any Senior Debt
of the Guarantor, or in the event that any event of default with respect to any
Senior Debt of the Guarantor shall have occurred and be continuing and shall
have resulted in such Senior Debt of the Guarantor becoming or being declared
due and payable prior to the date on which it would otherwise have become due
and payable, unless and until such event of default shall have been cured or
waived or shall have ceased to exist and such acceleration shall have been
rescinded or annulled, or (b) in the event any judicial proceeding shall be
pending with respect to any such default in payment or such event of default,
then no payment (including any payment which may be payable by reason of the
payment of any other indebtedness of the Guarantor being subordinated to the
payment of the Guarantees) shall be made by the Guarantor pursuant to the
Guarantees on account of principal of (or premium, if any) or interest on the
Securities or on account of the purchase or other acquisition of Securities by
the Guarantor or any Subsidiary; provided, however, that nothing in this Section
shall prevent the satisfaction of any sinking fund payment in accordance with
Article Thirteen by delivering and crediting pursuant to Section 1302 Securities
which have been acquired (upon redemption or otherwise) prior to such default in
payment or event of default.

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

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

Section 1605.     Payment Permitted If No Default.

                  Nothing contained in this Article or elsewhere in this
Indenture or in any of the Securities or the Guarantees

                                        

                                      -109-


<PAGE>   122



shall prevent (a) the Guarantor, at any time except during the pendency of any
Guarantor Proceeding referred to in Section 1602 or under the conditions
described in Sections 1603 and 1604, from making payments at any time pursuant
to the Guarantees of the Guarantor of principal of (and premium, if any) or
interest on the Securities, or (b) the application by the Trustee of any money
deposited with it hereunder to the payment of or on account of the principal of
(and premium, if any) or interest on the Securities or the retention of such
payment by the Holders, if, at the time of such application by the Trustee, it
did not have knowledge that such payment would have been prohibited by the
provisions of this Article.

Section 1606.     Subrogation to Rights of Holders of Senior Debt of the
                  Guarantor.

                  Subject to the payment in full of all Senior Debt of the
Guarantor, or the provision for such payment in cash or cash equivalents or
otherwise in a manner satisfactory to the holders of Senior Debt of the
Guarantor, the Holders of the Securities shall be subrogated to the extent of
the payments or distributions made to the holders of such Senior Debt of the
Guarantor pursuant to the provisions of this Article (equally and ratably with
the holders of all other indebtedness of the Guarantor which by its express
terms is subordinated to indebtedness of the Guarantor to substantially the same
extent as the Guarantees are subordinated to the Senior Debt of the Guarantor
and is entitled to like rights of subrogation by reason of any payments or
distributions made to holders of such Senior Debt of the Guarantor) to the
rights of the holders of such Senior Debt of the Guarantor to receive payments
and distributions of cash, property and securities of the Guarantor applicable
to the Senior Debt of the Guarantor until the principal of (and premium, if any)
and interest on the Securities shall be paid in full. If the Trustee or the
Holders of the Securities are not for any reason entitled to be subrogated to
the rights of holders of Senior Debt of the Guarantor in respect of such payment
or distribution, then the Trustee or the Holders of the Securities may require
each holder of Senior Debt of the Guarantor to whom any such payment or
distribution is made as a condition to such payment or distribution to assign
its Senior Debt of the Guarantor to the extent of such payment or distribution
and all rights with respect thereto to the Trustee on behalf of the Holders.
Such assignment shall not be effective until such time as all Senior Debt of the
Guarantor has been paid in full or payment thereof provided for. For purposes of
such subrogation or assignment, no payments or distributions to the holders of
the Senior Debt of the Guarantor of any

                                        

                                      -110-


<PAGE>   123



cash, property or securities to which the Holders of the Securities or the
Trustee would be entitled except for the provisions of this Article, and no
payments over pursuant to the provisions of this Article to the holders of
Senior Debt of the Guarantor by Holders of the Securities or the Trustee, shall,
as among the Guarantor, its creditors other than holders of Senior Debt of the
Guarantor, and the Holders of the Securities, be deemed to be a payment or
distribution by the Guarantor to or on account of the Senior Debt of the
Guarantor.

Section 1607.     Provisions Solely to Define Relative Rights.

                  The provisions of this Article are and are intended solely for
the purpose of defining the relative rights of the Holders of the Securities on
the one hand and the holders of Senior Debt of the Guarantor on the other hand.
Nothing contained in this Article or elsewhere in this Indenture or in the
Securities or in the Guarantees is intended to or shall (a) impair, as among the
Guarantor, its creditors other than holders of Senior Debt of the Guarantor, and
the Holders of the Securities, the obligations of the Guarantor, which are
absolute and unconditional (and which, subject to the rights under this Article
of the holders of Senior Debt of the Guarantor, are intended to rank equally
with all other general unsecured obligations of the Guarantor), to pay to the
Holders of the Securities pursuant to and in accordance with the Guarantees the
principal of (and premium, if any) and interest on the Securities as and when
the same shall become due and payable in accordance with their terms; or (b)
affect the relative rights against the Guarantor of the Holders of the
Securities and creditors of the Guarantor other than the holders of Senior Debt
of the Guarantor; or (c) prevent the Trustee or the Holder of any Security from
exercising all remedies otherwise permitted by applicable law upon default under
this Indenture including, without limitation, filing and voting claims in any
Guarantor Proceeding, subject to the rights, if any, under this Article of the
holders of Senior Debt of the Guarantor to receive cash, property and securities
otherwise payable or deliverable to the Trustee or such Holder.

                  Without limiting the generality of the foregoing, nothing
contained in this Article will restrict the right of the Trustee or the Holders
of the Securities of any series to take any action to declare the Securities of
such series to be due and payable prior to their stated maturity pursuant to
Section 502 or to pursue any rights or remedies hereunder.

                                        

                                      -111-


<PAGE>   124



Section 1608.     Trustee to Effectuate Subordination.

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

Section 1609.  No Waiver of Subordination Provisions.

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

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

Section 1610.     Notice to Trustee.

                  The Guarantor shall give prompt written notice to the Trustee
of any fact known to the Guarantor which would prohibit the making of any
payment to or by the Trustee in respect of the Guarantees. Notwithstanding the
provisions of this Article or any other provision of this Indenture, the Trustee
shall not be charged with knowledge of the

                                        

                                      -112-


<PAGE>   125



existence of any facts which would prohibit the making of any payment to or by
the Trustee in respect of the Guarantees, unless and until the Trustee shall
have received written notice thereof from the Guarantor or a holder of Senior
Debt of the Guarantor or from any trustee, agent or representative therefor;
and, prior to the receipt of any such written notice, the Trustee, subject to
the provisions of Section 601, shall be entitled in all respects to assume that
no such facts exist; provided, however, that if the Trustee shall not have
received the notice provided for in this Section at least two Business Days
prior to the date upon which by the terms hereof any money may become payable
for any purpose (including, without limitation, the payment of the principal of
(and premium, if any) or interest on any Security), then, anything herein
contained to the contrary notwithstanding, the Trustee shall have full power and
authority to receive such money and to apply the same to the purpose for which
such money was received and shall not be affected by any notice to the contrary
which may be received by it within two Business Days prior to such date.

                  Subject to the provisions of Section 601, the Trustee shall be
entitled to rely on the delivery to it of a written notice by a Person
representing himself or herself to be a holder of Senior Debt of the Guarantor
(or a trustee, agent or representative therefor) to establish that such notice
has been given by a holder of Senior Debt of the Guarantor (or a trustee, agent
or representative therefor). In the event that the Trustee determines in good
faith that further evidence is required with respect to the right of any Person
as a holder of Senior Debt of the Guarantor to participate in any payment or
distribution pursuant to this Article, the Trustee may request such Person to
furnish evidence to the reasonable satisfaction of the Trustee as to the amount
of Senior Debt of the Guarantor held by such Person, the extent to which such
Person is entitled to participate in such payment or distribution and any other
facts pertinent to the rights of such Person under this Article, and if such
evidence is not furnished, the Trustee may defer any payment to such Person
pending judicial determination as to the right of such Person to receive such
payment.

Section 1611.     Reliance on Judicial Order or Certificate of Liquidating
                  Agent.

                  Upon any payment or distribution of assets of the Guarantor
referred to in this Article, the Trustee, subject to the provisions of Section
601, and the Holders of the Securities shall be entitled to rely upon any order
or decree entered by any court of competent jurisdiction in

                                        

                                      -113-


<PAGE>   126



which such Guarantor Proceeding is pending, or a certificate of the trustee in
bankruptcy, receiver, liquidating trustee, custodian, assignee for the benefit
of creditors, agent or other Person making such payment or distribution,
delivered to the Trustee or to the Holders of Securities, for the purpose of
ascertaining the Persons entitled to participate in such payment or
distribution, the holders of the Senior Debt of the Guarantor and other
indebtedness of the Guarantor, the amount thereof or payable thereon, the amount
or amounts paid or distributed thereon and all other facts pertinent thereto or
to this Article.

Section 1612.     Trustee Not Fiduciary For Holders of Senior Debt of the
                  Guarantor.
                  
                  The Trustee, in its capacity as trustee under this Indenture,
shall not be deemed to owe any fiduciary duty to the holders of Senior Debt of
the Guarantor and shall not be liable to any such holders if it shall in good
faith mistakenly pay over or distribute to Holders of Securities or to the
Guarantor or to any other Person cash, property or securities to which any
holders of Senior Debt of the Guarantor shall be entitled by virtue of this
Article or otherwise.

Section 1613.     Rights of Trustee as Holder of Senior Debt of the Guarantor;
                  Preservation of Trustee's Rights.

                  The Trustee in its individual capacity shall be entitled to
all the rights set forth in this Article with respect to any Senior Debt of the
Guarantor which may at any time be held by it, to the same extent as any other
holder of Senior Debt of the Guarantor, and nothing in this Indenture shall
deprive the Trustee of any of its rights as such holder.

                  Nothing in this Article shall apply to claims of, or payments
to, the Trustee under or pursuant to Section 607.

Section 1614.     Article Applicable to Paying Agents.

                  In case at any time any Paying Agent other than the Trustee
shall have been appointed by the Guarantor and be then acting hereunder, the
term "Trustee" as used in this Article shall in such case (unless the context
otherwise requires) be construed as extending to and including such Paying Agent
within its meaning as fully for all intents and purposes as if such Paying Agent
were named in this Article in addition to or in place of the Trustee.

                                        

                                      -114-


<PAGE>   127




Section 1615.  Defeasance of This Article Sixteen.

                  The subordination of the Guarantees provided by this Article
Sixteen is expressly made subject to the provisions for defeasance or covenant
defeasance in Article Twelve and, anything herein to the contrary
notwithstanding, upon the effectiveness of any such defeasance or covenant
defeasance with respect to the Securities of a series, the Guarantees of the
Guarantor with respect to the Securities of such series shall thereupon cease to
be subordinated pursuant to this Article Sixteen.

                                     * * * *

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

                                        

                                      -115-


<PAGE>   128



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

                                                      AETNA LIFE AND CASUALTY
                                                        COMPANY

                                                      By________________________
                                                        Name:
                                                        Title:

[Seal]

Attest:
________________________
                                                      AETNA INC.

                                                      By________________________
                                                        Name:
                                                        Title:

[Seal]

Attest:
________________________

                                                      STATE STREET BANK AND
                                                      TRUST COMPANY OF
                                                      CONNECTICUT, NATIONAL
                                                      ASSOCIATION

                                                      By________________________
                                                        Name:
                                                        Title:

[Seal]

Attest:


                                        

                                      -116-


<PAGE>   129





STATE OF CONNECTICUT )
                     )  ss.:
COUNTY OF HARTFORD   )

                  On the      day of           , 1996, before me
personally came                   , to me known, who, being
by me duly sworn, did depose and say that (s)he is
of AETNA LIFE AND CASUALTY COMPANY, one of the corporations described in and
which executed the foregoing instrument; that (s)he knows the seal of said
corporation; that the seal affixed to said instrument is such corporate seal;
that it was so affixed by authority of the Board of Directors of said
corporation, and that (s)he signed her/his name thereto by like authority.

                                                       _____________________
                                                           Notary Public

                                        

                                      -117-


<PAGE>   130



STATE OF CONNECTICUT )
                     ) ss.:
COUNTY OF HARTFORD   )

                  On the      day of           , 1996, before me
personally came                   , to me known, who, being
by me duly sworn, did depose and say that (s)he is
of AETNA INC., one of the corporations described in and which executed the
foregoing instrument; that (s)he knows the seal of said corporation; that the
seal affixed to said instrument is such corporate seal; that it was so affixed
by authority of the Board of Directors of said corporation, and that (s)he
signed her/his name thereto by like authority.
                                                       __________________
                                                          Notary Public

                                        

                                      -118-


<PAGE>   131


COMMONWEALTH OF MASSACHUSETTS )
                              )  ss.:
COUNTY OF SUFFOLK             )

                  On the       day of             , 1996, before me
personally came                   , to me known, who, being
by me duly sworn, did depose and say that (s)he is
of STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION, one
of the corporations described in and which executed the foregoing instrument;
that (s)he knows the seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by authority of the
Board of Directors of said corporation, and that (s)he signed her/his name
thereto by like authority.
                                                       __________________
                                                          Notary Public
                                        

                                      -119-


<PAGE>   1
 
                                                                     EXHIBIT 5.1
 
June 28, 1996
 
Aetna Life and Casualty Company
151 Farmington Avenue
Hartford, Connecticut 06156
 
Aetna Inc.
151 Farmington Avenue
Hartford, Connecticut 06156
 
Ladies and Gentlemen:
 
     I have acted as counsel to Aetna Life and Casualty Company (to be renamed
Aetna Services, Inc.), a Connecticut corporation (the "Company") and Aetna Inc.,
a Connecticut corporation ("Aetna"), in connection with the registration under
the Securities Act of 1933, as amended (the "Securities Act"), of up to
$2,000,000,000 of senior or subordinated debt securities of the Company (the
"Debt Securities") and senior or subordinated guarantees (the "Guarantees") of
Aetna of the Debt Securities. I have examined or caused to be examined necessary
or appropriate corporate records, certificates and other documents, and
questions of law for the purposes of this opinion.
 
     Upon the basis of such examination and assuming that the Mergers referred
to in the registration statement have been duly consummated, I advise you that,
in my opinion:
 
          1. The Debt Securities will constitute valid and legally binding
     obligations of the Company subject to (a) bankruptcy, insolvency,
     reorganization, fraudulent transfer, moratorium and other similar laws now
     or hereafter in effect relating to or affecting creditors' rights generally
     and the rights of creditors of insurance companies generally, and (b)
     general principles of equity (regardless of whether considered in a
     proceeding at law or in equity) when the following conditions are met: (i)
     the registration statement has become effective under the Securities Act;
     (ii) the indenture relating to the Debt Securities and the Guarantees has
     been duly executed and delivered; (iii) the terms of the Debt Securities
     and of their issuance and sale have been duly established in conformity
     with the indenture relating to the Debt Securities so as not to violate any
     applicable law or result in a default under or breach of any agreement or
     instrument binding upon the Company and so as to comply with any
     requirement or restriction imposed by any court or governmental body having
     jurisdiction over the Company; and (iv) the Debt Securities have been duly
     executed and authenticated in accordance with the indenture relating to the
     Debt Securities, and duly issued and sold as contemplated by the
     registration statement and any prospectus supplement relating thereto.
 
          2. The Guarantees will constitute valid and legally binding
     obligations of Aetna subject to (a) bankruptcy, insolvency, reorganization,
     fraudulent transfer, moratorium and other similar laws now or hereafter in
     effect relating to or affecting creditors' rights generally and the rights
     of creditors of insurance companies generally, and (b) general principles
     of equity (regardless of whether considered in a proceeding at law or in
     equity) when the following conditions are met: (i) the registration
     statement has become effective under the Securities Act; (ii) the indenture
     relating to the Debt Securities and the Guarantees has been duly executed
     and delivered; (iii) the terms of the Debt Securities and the Guarantees to
     be endorsed thereon and of their issuance and sale have been duly
     established in conformity with the indenture relating to the Debt
     Securities and the Guarantees so as not to violate any applicable law or
     result in a default under or breach of any agreement or instrument binding
     upon Aetna and so as to comply with any requirement or restriction imposed
     by any court or governmental body having jurisdiction over Aetna; (iv) the
     Guarantees to be endorsed on the Debt Securities have been duly executed in
     accordance with the indenture relating to such Debt Securities and
     Guarantees; and (v) the Debt Securities have been duly executed and
     authenticated in accordance with the indenture relating to the Debt
     Securities, and duly issued and sold as contemplated by the registration
     statement and any prospectus supplement relating thereto.
 
                                      5.1-1
<PAGE>   2
 
     I note that, as of the date of this opinion, a judgment for money in an
action based on a Debt Security denominated in a foreign currency, currency unit
or composite currency or on a Guarantee in respect of any such Debt Security in
a Federal court in the United States ordinarily would be enforced only in United
States dollars. I also note that, as of the date of this opinion, a state court
in the State of Connecticut rendering a judgment on a Debt Security denominated
in a foreign currency, currency unit or composite currency or on a Guarantee in
respect of any such Debt Security may apply Section 50a-57 of the General
Statutes of Connecticut, and render such judgment in the foreign currency in
which the Debt Security or the Guarantee in respect thereof is denominated. Such
judgment then would be payable in that foreign currency or, at the option of the
judgment debtor, in the amount of U.S. dollars which will purchase that foreign
currency on the conversion date (as defined in such Statutes).
 
     I am admitted to the Bar of the State of Connecticut and the foregoing
opinion is limited to the laws of the State of Connecticut and the federal laws
of the United States of America.
 
     In my examination or the examination which I caused to be made, the legal
capacity of all natural persons, the genuineness of all signatures, the
authenticity of all documents submitted to me as originals, the conformity to
original documents of all documents submitted to me as certified or photostatic
copies and the authenticity of the originals of such latter documents were
assumed. As to any facts material to the opinions expressed herein which were
not independently established or verified, I have relied upon oral or written
statements and representations of officers and other representatives of the
Company, Aetna and others.
 
     I hereby consent to the filing of this opinion as Exhibit 5.1 to the
registration statement and to the reference made to me under the heading
"Validity of the Securities" in the prospectus. In giving such consent, I do not
thereby admit that I am in the category of persons whose consent is required
under Section 7 of the Securities Act.
 
                                          Very truly yours,
 
                                          /s/ Thomas J. Calvocoressi
 
                                          --------------------------------------
                                          Thomas J. Calvocoressi
 
                                      5.1-2

<PAGE>   1
 
                                                                     EXHIBIT 5.2
 
June 28, 1996
 
Aetna Life and Casualty Company
151 Farmington Avenue
Hartford, Connecticut 06156
 
Aetna Inc.
151 Farmington Avenue
Hartford, Connecticut 06156
 
Ladies and Gentlemen:
 
     We have acted as special counsel to Aetna Life and Casualty Company (to be
renamed Aetna Services, Inc.) (the "Company") and Aetna Inc. ("Aetna"), each a
Connecticut corporation, in connection with the preparation of the Registration
Statement on Form S-3 (the "Registration Statement") being filed with the
Securities and Exchange Commission (the "Commission") under the Securities Act
of 1933, as amended (the "Securities Act"), with respect to the contemplated
issuance from time to time of up to $2,000,000,000 aggregate public offering
price or the equivalent thereof in one or more foreign currencies or composite
currencies of senior or subordinated debt securities (the "Debt Securities") of
the Company and senior or subordinated guarantees (the "Guarantees") of Aetna of
the Debt Securities. The Debt Securities and the Guarantees may be issued
pursuant to the Senior Debt Securities Indenture to be entered into among the
Company, Aetna and State Street Bank and Trust Company of Connecticut, National
Association, as Trustee (as amended or supplemented, the "Senior Indenture"), or
a Subordinated Debt Securities Indenture to be entered into among the Company,
Aetna and State Street Bank and Trust Company of Connecticut, National
Association, as Trustee (as amended or supplemented, the "Subordinated
Indenture" and, together with the Senior Indenture, the "Indentures").
 
     We have examined originals or copies, certified or otherwise identified to
our satisfaction, of such documents, corporate records, certificates of public
officials and other instruments as we have deemed necessary for the purpose of
rendering this opinion.
 
     Upon the basis of the foregoing and assuming that the Mergers referred to
in the Registration Statement have been duly consummated, we are of the opinion
that:
 
          (1) when (i) the Registration Statement has become effective under the
     Securities Act; (ii) the Indentures have been duly executed and delivered;
     (iii) the terms of the Debt Securities and of their issuance and sale have
     been duly established in conformity with the Indentures relating to the
     Debt Securities so as not to violate any applicable law or result in a
     default under or breach of any agreement or instrument binding upon the
     Company and so as to comply with any requirement or restriction imposed by
     any court or governmental or regulatory body having jurisdiction over the
     Company; and (iv) the Debt Securities have been duly executed and
     authenticated in accordance with the Indentures relating to the Debt
     Securities, and duly issued and sold as contemplated by the Registration
     Statement and any prospectus supplement relating thereto, the Debt
     Securities will constitute valid and legally binding obligations of the
     Company enforceable in accordance with their terms, subject to (a)
     bankruptcy, insolvency, reorganization, fraudulent transfer, moratorium and
     other similar laws now or hereafter in effect relating to or affecting
     creditors' rights generally and the rights of creditors of insurance
     companies generally, and (b) general principles of equity (regardless of
     whether considered in a proceeding at law or in equity).
 
          (2) when (i) the Registration Statement has become effective under the
     Securities Act; (ii) the Indentures have been duly executed and delivered;
     (iii) the terms of the Debt Securities and the Guarantees to be endorsed
     thereon and of their issuance and sale have been duly established in
     conformity with the Indentures relating to the Debt Securities and
     Guarantees so as not to violate any applicable law or result in a default
     under or breach of any agreement or instrument binding upon Aetna
 
                                      5.2-1
<PAGE>   2
 
     and so as to comply with any requirement or restriction imposed by any
     court or governmental or regulatory body having jurisdiction over Aetna;
     (iv) the Guarantees to be endorsed on the Debt Securities have been duly
     executed in accordance with the Indentures relating to the Debt Securities;
     and (v) the Debt Securities have been duly executed and authenticated in
     accordance with the Indentures relating to the Debt Securities, and duly
     issued and sold as contemplated by the Registration Statement and any
     prospectus supplement relating thereto, the Guarantees will constitute
     valid and legally binding obligations of Aetna enforceable in accordance
     with their terms, subject to (a) bankruptcy, insolvency, reorganization,
     fraudulent transfer, moratorium and other similar laws now or hereafter in
     effect relating to or affecting creditors' rights generally and the rights
     of creditors of insurance companies generally, and (b) general principles
     of equity (regardless of whether considered in a proceeding at law or in
     equity).
 
     We note that, as of the date of this opinion, a judgment for money in an
action based on a Debt Security denominated in a foreign currency, currency unit
or composite currency or on a Guarantee in respect of any such Debt Security in
a Federal or state court located in New York ordinarily would be enforced in the
United States only in United States dollars. The date used to determine the rate
of conversion of the foreign currency, currency unit or composite currency in
which a particular Debt Security or the Guarantee in respect thereof is
denominated into United States dollars will depend upon various factors,
including which court renders the judgment.
 
     We are members of the Bar of the State of New York and the foregoing
opinion is limited to the laws of the State of New York and the federal laws of
the United States of America. To the extent that the foregoing opinion expresses
conclusions as to matters of the laws of the State of Connecticut, we have, with
your permission and without any independent investigation, relied on the opinion
of Thomas J. Calvocoressi, counsel to the Company and Aetna.
 
     We hereby consent to the use of this opinion as an exhibit to the
Registration Statement and to the reference to our name under the heading
"Validity of the Securities". In giving such consent, we do not thereby admit
that we are in the category of persons whose consent is required under Section 7
of the Securities Act.
 
                                          Very truly yours,
 
                                          /s/ Davis Polk & Wardwell
 
                                          --------------------------------------
                                          Davis Polk & Wardwell
 
                                      5.2-2

<PAGE>   1
 
                                                                    EXHIBIT 15.1
 
               LETTER RE: UNAUDITED INTERIM FINANCIAL INFORMATION
 
Aetna Life and Casualty Company
Hartford, Connecticut
 
Gentlemen:
 
     With respect to the Registration Statement on Form S-3 of Aetna Life and
Casualty Company and Aetna Inc. for the registration of up to $2,000,000,000 of
debt securities of Aetna Life and Casualty Company and guarantees thereof of
Aetna Inc., we acknowledge our awareness of the incorporation by reference of
our report dated April 25, 1996 related to our review of interim financial
information of Aetna Life and Casualty Company and Subsidiaries.
 
     Pursuant to Rule 436(c) under the Securities Act of 1933, such report is
not considered a part of a registration statement prepared or certified by an
accountant or a report prepared or certified by an accountant within the meaning
of Sections 7 and 11 of the Act.
 
                                          /s/  KPMG Peat Marwick LLP
 
Hartford, Connecticut
June 28, 1996

<PAGE>   1
 
                                                                    EXHIBIT 23.3
 
                        CONSENT OF INDEPENDENT AUDITORS
 
The Board of Directors
Aetna Life and Casualty Company:
 
     We consent to incorporation by reference in the Registration Statement on
Form S-3 of Aetna Life and Casualty Company (the "Company") and Aetna Inc. for
the registration of up to $2,000,000,000 of debt securities of Aetna Life and
Casualty Company and guarantees thereof of Aetna Inc. of our reports dated
February 6, 1996, relating to the consolidated balance sheets of Aetna Life and
Casualty Company and Subsidiaries as of December 31, 1995 and 1994 and the
related consolidated statements of income, shareholders' equity, and cash flows
and related schedules for each of the years in the three-year period ended
December 31, 1995, which reports appear in or are incorporated by reference in
the December 31, 1995 annual report on Form 10-K of Aetna Life and Casualty
Company. Our reports refer to changes in 1993 in the Company's method of
accounting for certain investments in debt and equity securities, postemployment
benefits, workers' compensation life table indemnity reserves and
retrospectively rated reinsurance contracts.
 
     We also consent to the reference to our firm under the heading "Experts" in
the Prospectus.
 
                                          /s/  KPMG Peat Marwick LLP
 
Hartford, Connecticut
June 28, 1996

<PAGE>   1
 
                                                                    EXHIBIT 23.4
 
                        CONSENT OF INDEPENDENT AUDITORS
 
The Board of Directors
Aetna Inc.:
 
     We consent to incorporation by reference in the Registration Statement on
Form S-3 of Aetna Life and Casualty Company (the "Company") and Aetna Inc. for
the registration of up to $2,000,000,000 of debt securities of Aetna Life and
Casualty Company and guarantees thereof of Aetna Inc. of our report dated April
23, 1996, relating to the consolidated balance sheet of Aetna Inc. as of April
22, 1996, which report appears in the Company's Current Report on Form 8-K dated
June 28, 1996.
 
     We also consent to the reference to our firm under the heading "Experts" in
the Prospectus.
 
                                          /s/  KPMG Peat Marwick LLP
 
Hartford, Connecticut
June 28, 1996

<PAGE>   1
 
                                                                    EXHIBIT 23.5
 
               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
     We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Aetna Life and
Casualty Company and Aetna Inc. for the registration of up to $2,000,000,000 of
debt securities of Aetna Life and Casualty Company and guarantees thereof of
Aetna Inc. and to the incorporation by reference therein of our reports dated
February 2, 1996, with respect to the consolidated financial statements of U.S.
Healthcare, Inc. incorporated by reference in its Annual Report (Form 10-K, as
amended) for the year ended December 31, 1995 and the related financial
statement schedule included therein, filed with the Securities and Exchange
Commission.
 
                                          /s/  Ernst & Young LLP
 
Philadelphia, Pennsylvania
June 27, 1996

<PAGE>   1
 
                                                                    EXHIBIT 24.1
 
                               POWER OF ATTORNEY
 
     EACH UNDERSIGNED DIRECTOR AND/OR OFFICER OF AETNA LIFE AND CASUALTY COMPANY
(THE "COMPANY") HEREBY CONSTITUTES AND APPOINTS ZOE BAIRD, THOMAS J.
CALVOCORESSI AND WILLIAM J. CASAZZA, AND EACH OF THEM INDIVIDUALLY, WITH FULL
POWERS OF SUBSTITUTION AND RESUBSTITUTION, TRUE AND LAWFUL ATTORNEYS, WITH FULL
POWER TO THEM AND EACH OF THEM TO SIGN FOR THE UNDERSIGNED, IN THE UNDERSIGNED'S
NAME AND IN THE CAPACITIES INDICATED BELOW, THIS REGISTRATION STATEMENT ON FORM
S-3 FILED WITH THE SECURITIES AND EXCHANGE COMMISSION, AND ANY AND ALL
AMENDMENTS TO THIS REGISTRATION STATEMENT (INCLUDING, WITHOUT LIMITATION,
POST-EFFECTIVE AMENDMENTS AND ANY AMENDMENT OR AMENDMENTS OR ADDITIONAL
REGISTRATION STATEMENTS FILED PURSUANT TO RULE 462 UNDER THE SECURITIES ACT OF
1933, AS AMENDED, INCREASING THE AMOUNT OF SECURITIES FOR WHICH REGISTRATION IS
BEING SOUGHT), IN CONNECTION WITH THE REGISTRATION UNDER THE SECURITIES ACT OF
1933, AS AMENDED, OF DEBT SECURITIES OF THE COMPANY, GUARANTEED BY AETNA INC.,
AND TO FILE OR CAUSE TO BE FILED THE SAME, WITH ALL EXHIBITS THERETO AND OTHER
DOCUMENTS IN CONNECTION THEREWITH, WITH THE SECURITIES AND EXCHANGE COMMISSION,
GRANTING UNTO SAID ATTORNEYS, AND EACH OF THEM, FULL POWER AND AUTHORITY TO DO
AND PERFORM EACH AND EVERY ACT AND THING REQUISITE AND NECESSARY TO BE DONE IN
CONNECTION THEREWITH, AS FULLY TO ALL INTENTS AND PURPOSES AS THE UNDERSIGNED
MIGHT OR COULD DO IN PERSON, AND HEREBY RATIFYING AND CONFIRMING ALL THAT SAID
ATTORNEYS, AND EACH OF THEM, OR THEIR SUBSTITUTE OR SUBSTITUTES, SHALL DO OR
CAUSE TO BE DONE BY VIRTUE OF THIS POWER OF ATTORNEY.
 
     WITNESS OUR HANDS ON THIS 28TH DAY OF JUNE, 1996.
 
<TABLE>
<S>                                              <C>
/s/ Ronald E. Compton
- ---------------------------------------------    ---------------------------------------------
Ronald E. Compton                                Michael H. Jordan
Chairman, President and Director                 Director
(Principal Executive Officer)
                                                 /s/ Jack D. Kuehler
- ---------------------------------------------    ---------------------------------------------
William H. Donaldson                             Jack D. Kuehler
Director                                         Director
/s/ Barbara Hackman Franklin                     /s/ Frank R. O'Keefe, Jr.
- ---------------------------------------------    ---------------------------------------------
Barbara Hackman Franklin                         Frank R. O'Keefe, Jr.
Director                                         Director
/s/ Earl G. Graves
- ---------------------------------------------    ---------------------------------------------
Earl G. Graves                                   Judith Rodin
Director                                         Director
/s/ Gerald Greenwald                             /s/ Richard L. Huber
- ---------------------------------------------    ---------------------------------------------
Gerald Greenwald                                 Richard L. Huber
Director                                         Vice Chairman for Strategy and Finance
                                                 (Principal Financial Officer)
                                                 /s/ Robert J. Price
- ---------------------------------------------    ---------------------------------------------
Ellen M. Hancock                                 Robert J. Price
Director                                         Vice President and Corporate Controller
                                                 (Controller)
</TABLE>

<PAGE>   1
 
                                                                    EXHIBIT 24.2
 
                               POWER OF ATTORNEY
 
     EACH UNDERSIGNED DIRECTOR AND/OR OFFICER OF AETNA INC. (THE "COMPANY")
HEREBY CONSTITUTES AND APPOINTS ZOE BAIRD, THOMAS J. CALVOCORESSI, AND WILLIAM
J. CASAZZA, AND EACH OF THEM INDIVIDUALLY, WITH FULL POWERS OF SUBSTITUTION AND
RESUBSTITUTION, TRUE AND LAWFUL ATTORNEYS, WITH FULL POWER TO THEM AND EACH OF
THEM TO SIGN FOR THE UNDERSIGNED, IN THE UNDERSIGNED'S NAME AND IN THE
CAPACITIES INDICATED BELOW, THIS REGISTRATION STATEMENT ON FORM S-3 FILED WITH
THE SECURITIES AND EXCHANGE COMMISSION, AND ANY AND ALL AMENDMENTS TO THIS
REGISTRATION STATEMENT (INCLUDING, WITHOUT LIMITATION, POST-EFFECTIVE AMENDMENTS
AND ANY AMENDMENT OR AMENDMENTS OR ADDITIONAL REGISTRATION STATEMENTS FILED
PURSUANT TO RULE 462 UNDER THE SECURITIES ACT OF 1933, AS AMENDED, INCREASING
THE AMOUNT OF SECURITIES FOR WHICH REGISTRATION IS BEING SOUGHT), IN CONNECTION
WITH THE REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OF DEBT
SECURITIES OF AETNA LIFE AND CASUALTY COMPANY, GUARANTEED BY THE COMPANY, AND TO
FILE OR CAUSE TO BE FILED THE SAME, WITH ALL EXHIBITS THERETO AND OTHER
DOCUMENTS IN CONNECTION THEREWITH, WITH THE SECURITIES AND EXCHANGE COMMISSION,
GRANTING UNTO SAID ATTORNEYS, AND EACH OF THEM, FULL POWER AND AUTHORITY TO DO
AND PERFORM EACH AND EVERY ACT AND THING REQUISITE AND NECESSARY TO BE DONE IN
CONNECTION THEREWITH, AS FULLY TO ALL INTENTS AND PURPOSES AS THE UNDERSIGNED
MIGHT OR COULD DO IN PERSON, AND HEREBY RATIFYING AND CONFIRMING ALL THAT SAID
ATTORNEYS, AND EACH OF THEM, OR THEIR SUBSTITUTE OR SUBSTITUTES, SHALL DO OR
CAUSE TO BE DONE BY VIRTUE OF THIS POWER OF ATTORNEY.
 
     WITNESS OUR HANDS ON THIS 28TH DAY OF JUNE, 1996.
 
<TABLE>
<S>                                              <C>
/s/ Ronald E. Compton                            /s/ James H. Dickerson, Jr.
- ---------------------------------------------    ---------------------------------------------
Ronald E. Compton                                James H. Dickerson, Jr.
Chairman, President and Director                 Director
(Principal Executive Officer)
/s/ Richard L. Huber                             ---------------------------------------------
- ---------------------------------------------    David F. Simon
Richard L. Huber                                 Director
Vice Chairman for Strategy and Finance and
Director
(Principal Financial and Accounting Officer)
</TABLE>

<PAGE>   1
 
                                                                    EXHIBIT 25.1
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                    FORM T-1
                            ------------------------
 
                       STATEMENT OF ELIGIBILITY UNDER THE
                        TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE
 
                CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY
                   OF A TRUSTEE PURSUANT TO SECTION 305(B)(2)
                                     ------
 
                      STATE STREET BANK AND TRUST COMPANY
                                OF CONNECTICUT,
                              NATIONAL ASSOCIATION
              (EXACT NAME OF TRUSTEE AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                           <C>
              NOT APPLICABLE                     06-1304336
    (JURISDICTION OF INCORPORATION OR         (I.R.S. EMPLOYER
ORGANIZATION IF NOT A U.S. NATIONAL BANK)      IDENTIFICATION
                                                    NO.)
750 MAIN STREET, SUITE 1114, HARTFORD, CONNECTICUT        06103
     (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)          (ZIP CODE)
</TABLE>
 
                            ------------------------
 
                                   AETNA INC.
              (EXACT NAME OF OBLIGOR AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                               <C>
         CONNECTICUT                 02-0488491
 (STATE OR OTHER JURISDICTION     (I.R.S. EMPLOYER
               OF
INCORPORATION OR ORGANIZATION)     IDENTIFICATION
                                        NO.)
</TABLE>
 
                             151 FARMINGTON AVENUE
                          HARTFORD, CONNECTICUT 06156
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)
 
                            ------------------------
 
                        AETNA LIFE AND CASUALTY COMPANY
              (EXACT NAME OF OBLIGOR AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                               <C>
         CONNECTICUT                 06-0843808
 (STATE OR OTHER JURISDICTION     (I.R.S. EMPLOYER
               OF
INCORPORATION OR ORGANIZATION)     IDENTIFICATION
                                        NO.)
</TABLE>
 
                             151 FARMINGTON AVENUE
                          HARTFORD, CONNECTICUT 06156
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)
 
                            ------------------------
 
                             SENIOR DEBT SECURITIES
                        (TITLE OF INDENTURE SECURITIES)
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                                    GENERAL
 
ITEM 1. GENERAL INFORMATION.
 
     Furnish the following information as to the trustee:
 
     (a) Name and address of each examining or supervisory authority to which it
         is subject.
 
        Comptroller of the Currency
        Treasury Department of the United States
        Washington, D.C.
 
        Board of Governors of the Federal Reserve System
        Washington, D.C.
 
        Federal Deposit Insurance Corporation
        Washington, D.C.
 
     (b) Whether it is authorized to exercise corporate trust powers.
 
        yes
 
ITEM 2.  AFFILIATIONS WITH OBLIGORS.
 
     If the Obligor is an affiliate of the trustee, describe each such
affiliation.
 
        Neither obligor is an affiliate of the trustee.
 
        (See note on page 2.)
 
ITEM 3.  THROUGH ITEM 15.
 
     Not applicable.
 
ITEM 16.  LIST OF EXHIBITS.
 
     List below all exhibits filed as part of this statement of eligibility.
 
     1.  A copy of the articles of association of the trustee as now in effect.
 
           A copy of the Articles of Association of the trustee as now in effect
           incorporated herein by reference to Exhibit T-1.1 filed with Form T-1
           Statement, Registration No. 33-40617.
 
     2.  A copy of the certificate of authority of the trustee to commence
         business, if not contained in the articles of association.
 
           A copy of the Certificate of the Comptroller of the Currency.
 
     3.  A copy of the authorization of the trustee to exercise corporate trust
         powers, if such authorization is not contained in the documents
         specified in paragraph (1) or (2), above.
 
           A copy of the Certification of Fiduciary Powers (included in Exhibit
           2).
 
     4.  A copy of the existing by-laws of the trustee, or instruments
corresponding thereto.
 
           A copy of the existing by-laws of the trustee incorporated herein by
           reference to Exhibit T-1.1 filed with Form T-1 Statement,
           Registration No. 33-40617.
 
     5.  A copy of each indenture referred to in Item 4. if the obligor is in
default.
 
           Not applicable.
 
                                        1
<PAGE>   3
 
     6.  The consents of United States institutional trustees required by
         Section 321(b) of the Act.
 
           The consent of the trustee required by Section 321(b) of the Act is
           annexed hereto as Exhibit 6 and made a part hereof.
 
     7.  A copy of the latest report of condition of the trustee published
         pursuant to law or the requirements of its supervising or examining
         authority.
 
           A copy of the latest report of condition of the trustee published
           pursuant to law or the requirements of its supervising or examining
           authority is annexed hereto as Exhibit 7 and made a part hereof.
 
                                     NOTES
 
     In answering any item of this Statement of Eligibility which relates to
matters peculiarly within the knowledge of the obligor or any underwriter for
the obligor, the trustee has relied upon information furnished to it by the
obligor and the underwriters, and the trustee disclaims responsibility for the
accuracy or completeness of such information.
 
     The answer furnished to Item 2. of this statement will be amended, if
necessary, to reflect any facts which differ from those stated and which would
have been required to be stated if known at the date hereof.
 
                                   SIGNATURE
 
     Pursuant to the requirements of the Trust Indenture Act of 1939, as
amended, the trustee, State Street Bank and Trust Company of Connecticut,
National Association, a national banking association organized and existing
under the laws of the United States, has duly caused this statement of
eligibility to be signed on its behalf by the undersigned, thereunto duly
authorized, all in the City of Boston and The Commonwealth of Massachusetts, on
the 25th Day of June, 1996.
 
                                        STATE STREET BANK AND TRUST COMPANY
                                        OF CONNECTICUT, NATIONAL ASSOCIATION
 
                                        By:         /s/  JILL OLSON
 
                                           -------------------------------------
                                                        Jill Olson
                                                 Assistant Vice President
 
                                        2
<PAGE>   4
 
                                EXHIBIT 1 AND 2
 
COMPTROLLER OF THE CURRENCY
ADMINISTRATOR OF NATIONAL BANKS
WASHINGTON, D.C. 20219
 
                                  CERTIFICATE
 
     I Eugene A. Ludwig, Comptroller of the Currency, do hereby certify that:
 
     1.  The Comptroller of the Currency, pursuant to Revised Statutes 324, et
seq., as amended, 12 U.S.C. 1, et seq., as amended, has possession, custody and
control of all records pertaining to the chartering, regulation and supervision
of all National Banking Associations.
 
     2.  "State Street Bank and Trust Company of Connecticut, National
Association", Hartford, Connecticut, (Charter No. 22272), is a National Banking
Association formed under the laws of the United States and is authorized
thereunder to transact the business of banking and exercise Fiduciary Powers on
the date of this Certificate.
 
        IN TESTIMONY WHEREOF, I have hereunto subscribed my name and caused my
        seal of office to be affixed to these presents at the Treasury
        Department, in the City of Washington and District of Columbia, this 4th
        day of June, 1996.
 
                                                /s/  EUGENE A. LUDWIG
 
                                          --------------------------------------
                                               Comptroller of the Currency
 
                                        3
<PAGE>   5
 
                                   EXHIBIT 6
 
                             CONSENT OF THE TRUSTEE
 
     Pursuant to the requirements of Section 321(b) of the Trust Indenture Act
of 1939, as amended, in connection with the proposed issuance by Aetna Life and
Casualty Company of its Senior Debt Securities guaranteed by Aetna Inc., we
hereby consent that reports of examination by Federal, State, Territorial or
District authorities may be furnished by such authorities to the Securities and
Exchange Commission upon request therefor.
 
                                        STATE STREET BANK AND TRUST COMPANY
                                        OF CONNECTICUT, NATIONAL ASSOCIATION
 
                                        By:         /s/  JILL OLSON
 
                                           -------------------------------------
                                                        Jill Olson
                                                 Assistant Vice President
 
Dated: June 25, 1996
 
                                        4
<PAGE>   6
 
                                   EXHIBIT 7
 
<TABLE>
<S>                       <C>                                                 <C>
Legal Title of Bank:      State Street Bank and Trust Company of CT, N.A.     Call Date: 3/31/96 ST-BK: 09-0663
Address:                  750 Main Street Suite 1114
City, State Zip           Hartford, CT 06103
FDIC Certifcate No.:      33132
</TABLE>
 
CONSOLIDATED REPORT OF CONDITION FOR INSURED COMMERCIAL
AND STATE-CHARTERED SAVINGS BANKS FOR MARCH 31, 1996
 
All schedules are to be reported in thousands of dollars. Unless otherwise
indicated, report the amount outstanding as of the last business day of the
quarter.
 
Schedule RC -- Balance Sheet
 
<TABLE>
<CAPTION>
                                                                                                THOUSANDS
                                                                                                   OF
                                                                                                 DOLLARS
                                                                                                ---------
<S>                                                                                       <C>   <C>
ASSETS
Cash and balances due from depository institutions:
  Noninterest-bearing balances and currency and coin..........................................    5,383
  Interest-bearing balances...................................................................        0
Securities....................................................................................       90
Federal funds sold and securities purchased under agreements to resell in domestic offices of
  the bank and its Edge subsidiary............................................................        0
Loans and lease financing receivables:
  Loans and leases, net of unearned income..............................................     0
  Allowance for loan and lease losses...................................................     0
  Loans and leases, net of unearned income and allowances.....................................        0
Assets held in trading accounts...............................................................        0
Premises and fixed assets.....................................................................      210
Other real estate owned.......................................................................        0
Investments in unconsolidated subsidiaries....................................................        0
Customers' liability to this bank on acceptances outstanding..................................        0
Intangible assets.............................................................................    3,505
Other assets..................................................................................      294
                                                                                                  -----
Total assets..................................................................................    9,482
                                                                                                  =====
LIABILITIES 
Deposits:
  In domestic offices.........................................................................        0
    Noninterest-bearing.................................................................     0
    Interest-bearing....................................................................     0
  In foreign offices and Edge subsidiary......................................................        0
    Noninterest-bearing.................................................................     0
    Interest-bearing....................................................................     0
Federal funds purchased and securities sold under agreements to repurchase in domestic offices
  of the bank and of its Edge subsidiary......................................................        0
Demand notes issued to the U.S. Treasury and Trading Liabilities..............................        0
Other borrowed money..........................................................................        0
Bank's liability on acceptances executed and outstanding......................................        0
Other liabilities.............................................................................    3,581
                                                                                                  -----
Total liabilities.............................................................................    3,581
                                                                                                  -----
EQUITY CAPITAL 
Common stock..................................................................................      500
Surplus.......................................................................................    2,600
Undivided profits.............................................................................    2,901
                                                                                                  ----- 
Total equity capital..........................................................................    5,901
                                                                                                  -----  
Total liabilities and equity capital..........................................................    9,482
                                                                                                  =====
</TABLE>
 
                                        5
<PAGE>   7
 
     We, the undersigned directors, attest to the correctness of this statement
of resources and liabilities. We declare that it has been examined by us, and to
the best of our knowledge and belief has been prepared in conformance with the
iinstructions and is true and correct.
 
                                          Chris A. Hayes
                                          Deborah A. Robbins
                                          James A. Quale
 
     I, Chris A. Hayes, Senior Vice President, Director and Chairperson of the
Board, of the above named bank do hereby declare that the Report of Condition is
true and correct to the best of my knowledge and belief.
 
                                          Chris A. Hayes
 
                                        6

<PAGE>   1
 
                                                                    EXHIBIT 25.2
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                    FORM T-1
                            ------------------------
 
                       STATEMENT OF ELIGIBILITY UNDER THE
                        TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE
 
                CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY
                   OF A TRUSTEE PURSUANT TO SECTION 305(B)(2)
                                     ------
 
                      STATE STREET BANK AND TRUST COMPANY
                                OF CONNECTICUT,
                              NATIONAL ASSOCIATION
              (EXACT NAME OF TRUSTEE AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                           <C>
              NOT APPLICABLE                     06-1304336
    (JURISDICTION OF INCORPORATION OR         (I.R.S. EMPLOYER
ORGANIZATION IF NOT A U.S. NATIONAL BANK)      IDENTIFICATION
                                                    NO.)
750 MAIN STREET, SUITE 1114, HARTFORD, CONNECTICUT        06103
     (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)          (ZIP CODE)
</TABLE>
 
                            ------------------------
 
                                   AETNA INC.
              (EXACT NAME OF OBLIGOR AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                               <C>
         CONNECTICUT                 02-0488491
 (STATE OR OTHER JURISDICTION     (I.R.S. EMPLOYER
               OF
INCORPORATION OR ORGANIZATION)     IDENTIFICATION
                                        NO.)
</TABLE>
 
                             151 FARMINGTON AVENUE
                          HARTFORD, CONNECTICUT 06156
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)
 
                            ------------------------
 
                        AETNA LIFE AND CASUALTY COMPANY
              (EXACT NAME OF OBLIGOR AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                               <C>
         CONNECTICUT                 06-0843808
 (STATE OR OTHER JURISDICTION     (I.R.S. EMPLOYER
               OF
INCORPORATION OR ORGANIZATION)     IDENTIFICATION
                                        NO.)
</TABLE>
 
                             151 FARMINGTON AVENUE
                          HARTFORD, CONNECTICUT 06156
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)
                            ------------------------
 
                          SUBORDINATED DEBT SECURITIES
                        (TITLE OF INDENTURE SECURITIES)
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                                    GENERAL
 
ITEM 1. GENERAL INFORMATION.
 
     Furnish the following information as to the trustee:
 
     (a) Name and address of each examining or supervisory authority to which it
is subject.
 
        Comptroller of the Currency
        Treasury Department of the United States
        Washington, D.C.
 
        Board of Governors of the Federal Reserve System
        Washington, D.C.
 
        Federal Deposit Insurance Corporation
        Washington, D.C.
 
     (b) Whether it is authorized to exercise corporate trust powers.
 
        yes
 
ITEM 2. AFFILIATIONS WITH OBLIGORS.
 
     If the obligor is an affiliate of the trustee, describe each such
affiliation.
 
        Neither obligor is an affiliate of the trustee.
 
        (See note on page 2.)
 
ITEM 3. THROUGH ITEM 15. NOT APPLICABLE.
 
ITEM 16. LIST OF EXHIBITS.
 
     List below all exhibits filed as part of this statement of eligibility.
 
     1. A copy of the articles of association of the trustee as now in effect.
 
        A copy of the Articles of Association of the trustee as now in effect
        incorporated herein by reference to Exhibit T-1.1 filed with Form T-1
        Statement, Registration No. 33-40617.
 
     2. A copy of the certificate of authority of the trustee to commence
business, if not contained in the articles of association.
 
        A copy of the Certificate of the Comptroller of the Currency.
 
     3. A copy of the authorization of the trustee to exercise corporate trust
powers, if such authorization is not contained in the documents specified in
paragraph (1) or (2), above.
 
        A copy of the Certification of Fiduciary Powers (included in Exhibit 2).
 
     4. A copy of the existing by-laws of the trustee, or instruments
corresponding thereto.
 
        A copy of the existing by-laws of the trustee incorporated herein by
        reference to Exhibit T-1.1 filed with Form T-1 Statement, Registration
        No. 33-40617.
 
     5. A Copy of each indenture referred to in Item 4. if the obligor is in
default.
 
        Not applicable.
 
     6. The Consents of United States Institutional Trustees required by section
321(B) of the act.
 
        The consent of the trustee required by Section 321(b) of the Act is
        annexed hereto as Exhibit 6 and made a part hereof.
 
                                        1
<PAGE>   3
 
     7. A copy of the latest report of condition of the trustee published
pursuant to law or the requirements of its supervising or examining authority.
 
        A copy of the latest report of condition of the trustee published
        pursuant to law or the requirements of its supervising or examining
        authority is annexed hereto as Exhibit 7 and made a part hereof.
 
                                     NOTES
 
     In answering any item of this Statement of Eligibility which relates to
matters peculiarly within the knowledge of the obligor or any underwriter for
the obligor, the trustee has relied upon information furnished to it by the
obligor and the underwriters, and the trustee disclaims responsibility for the
accuracy or completeness of such information.
 
     The answer furnished to Item 2. of this statement will be amended, if
necessary, to reflect any facts which differ from those stated and which would
have been required to be stated if known at the date hereof.
 
                                   SIGNATURE
 
     Pursuant to the requirements of the Trust Indenture Act of 1939, as
amended, the trustee, State Street Bank and Trust Company of Connecticut,
National Association, a national banking association organized and existing
under the laws of the United States, has duly caused this statement of
eligibility to be signed on its behalf by the undersigned, thereunto duly
authorized, all in the City of Boston and The Commonwealth of Massachusetts, on
the 25TH DAY OF JUNE, 1996.
 
                                          STATE STREET BANK AND TRUST
                                          COMPANY OF CONNECTICUT,
                                          NATIONAL ASSOCIATION
 
                                          By:        /s/  JILL OLSON
 
                                            ------------------------------------
                                                         Jill Olson
                                                  Assistant Vice President
 
                                        2
<PAGE>   4
 
                                EXHIBIT 1 AND 2
 
Comptroller of the Currency
 
Administrator of National Banks
Washington, DC 20219
 
                                  CERTIFICATE
 
     I Eugene A. Ludwig, Comptroller of the Currency, do hereby certify that:
 
          1.  The Comptroller of the Currency, pursuant to Revised Statutes 324,
     et seq., as amended, 12 U.S.C. 1, et seq., as amended, has possession,
     custody and control of all records pertaining to the chartering, regulation
     and supervision of all National Banking Associations.
 
          2.  "State Street Bank and Trust Company of Connecticut, National
     Association", Hartford, Connecticut, (Charter No. 22272), is a National
     Banking Association formed under the laws of the United States and is
     authorized thereunder to transact the business of banking and exercise
     Fiduciary Powers on the date of this Certificate.
 
           IN TESTIMONY WHEREOF, I have hereunto subscribed my name and caused
           my seal of office to be affixed to these presents at the Treasury
           Department, in the City of Washington and District of Columbia, this
           4th day of June, 1996.
 
                                                 /s/  EUGENE A. LUDWIG
 
                                          --------------------------------------
                                                     Eugene A. Ludwig
                                               Comptroller of the Currency
 
                                        3
<PAGE>   5
 
                                   EXHIBIT 6
 
                             CONSENT OF THE TRUSTEE
 
     Pursuant to the requirements of Section 321(b) of the Trust Indenture Act
of 1939, as amended, in connection with the proposed issuance by Aetna Life and
Casualty Company of its Subordinated Debt Securities, guaranteed by Aetna Inc.,
we hereby consent that reports of examination by Federal, State, Territorial or
District authorities may be furnished by such authorities to the Securities and
Exchange Commission upon request therefor.
 
                                          STATE STREET BANK AND TRUST
                                          COMPANY OF CONNECTICUT,
                                          NATIONAL ASSOCIATION
 
                                          By:        /s/  JILL OLSON
 
                                            ------------------------------------
                                                         Jill Olson
                                                  Assistant Vice President
Dated: June 25, 1996
 
                                        4
<PAGE>   6
 
                                   EXHIBIT 7
 
<TABLE>
<S>                       <C>                                                 <C>
Legal Title of Bank:      State Street Bank and Trust Company of CT, N.A.     Call Date: 3/31/96 ST-BK: 09-0663
Address:                  750 Main Street Suite 1114
City, State Zip           Hartford, CT 06103
FDIC Certifcate No.:      33132
</TABLE>
 
Consolidated Report of Condition for Insured Commercial
and State-Chartered Savings Banks for March 31, 1996
 
All schedules are to be reported in thousands of dollars. Unless otherwise
indicated, report the amount outstanding as of the last business day of the
quarter.
 
Schedule RC -- Balance Sheet
 
<TABLE>
<CAPTION>
                                                                                                THOUSANDS
                                                                                                   OF
                                                                                                 DOLLARS
                                                                                                ---------
<S>                                                                                       <C>   <C>
ASSETS
Cash and balances due from depository institutions:
  Noninterest-bearing balances and currency and coin..........................................    5,383
  Interest-bearing balances...................................................................        0
Securities....................................................................................       90
Federal funds sold and securities purchased under agreements to resell in domestic offices of
  the bank and its Edge subsidiary............................................................        0
Loans and lease financing receivables:
  Loans and leases, net of unearned income..............................................     0
  Allowance for loan and lease losses...................................................     0
  Loans and leases, net of unearned income and allowances.....................................        0
Assets held in trading accounts...............................................................        0
Premises and fixed assets.....................................................................      210
Other real estate owned.......................................................................        0
Investments in unconsolidated subsidiaries....................................................        0
Customers' liability to this bank on acceptances outstanding..................................        0
Intangible assets.............................................................................    3,505
Other assets..................................................................................      294
                                                                                                  -----
Total assets..................................................................................    9,482
                                                                                                  =====
LIABILITIES
Deposits:
  In domestic offices.........................................................................        0
    Noninterest-bearing.................................................................     0
    Interest-bearing....................................................................     0
  In foreign offices and Edge subsidiary......................................................        0
    Noninterest-bearing.................................................................     0
    Interest-bearing....................................................................     0
Federal funds purchased and securities sold under agreements to repurchase in domestic offices
  of the bank and of its Edge subsidiary......................................................        0
Demand notes issued to the U.S. Treasury and Trading Liabilities..............................        0
Other borrowed money..........................................................................        0
Bank's liability on acceptances executed and outstanding......................................        0
Other liabilities.............................................................................    3,581
                                                                                                  -----
Total liabilities.............................................................................    3,581
                                                                                                  -----
EQUITY CAPITAL
Common stock..................................................................................      500
Surplus.......................................................................................    2,500
Undivided profits.............................................................................    2,901
                                                                                                  -----
Total equity capital..........................................................................    5,901
                                                                                                  -----
Total liabilities and equity capital..........................................................    9,482
                                                                                                  =====
</TABLE>
 
                                        5
<PAGE>   7
 
     We, the undersigned directors, attest to the correctness of this statement
of resources and liabilities. We declare that it has been examined by us, and to
the best of our knowledge and belief has been prepared in conformance with the
instructions and is true and correct.
 
                                          Chris A. Hayes
                                          Deborah A. Robbins
                                          James A. Quale
 
     I, Chris A. Hayes, Senior Vice President, Director and Chairperson of the
Board, of the above named bank do hereby declare that the Report of Condition is
true and correct to the best of my knowledge and belief.
 
                                          Chris A. Hayes
 
                                        6


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