Document:

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                         TUMBLEWEED COMMUNICATIONS CORP.

                AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

                                JANUARY 31, 2000

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SECTION 1.        GENERAL.....................................................1
                  1.1      DEFINITIONS........................................1

SECTION 2.        RESTRICTIONS ON TRANSFER....................................2

SECTION 3.        REGISTRATION................................................3
                  3.1      DEMAND REGISTRATION................................3
                  3.2      PIGGYBACK REGISTRATIONS............................4
                  3.3      FORM S-3 REGISTRATION..............................5
         3.4      EXPENSES OF REGISTRATION....................................6
         3.5      OBLIGATIONS OF THE COMPANY..................................6
         3.6      TERMINATION OF REGISTRATION RIGHTS..........................7
         3.7      DELAY OF REGISTRATION; FURNISHING INFORMATION...............8
         3.8      INDEMNIFICATION.............................................8
         3.9      ASSIGNMENT OF REGISTRATION RIGHTS..........................10
         3.10     AMENDMENT OF REGISTRATION RIGHTS...........................10
         3.11     LIMITATION ON SUBSEQUENT REGISTRATION RIGHTS...............10
         3.12     "MARKET STAND-OFF" AGREEMENT...............................10
         3.13     RULE 144 REPORTING.........................................11

SECTION 4.        MISCELLANEOUS..............................................11
         4.1      GOVERNING LAW..............................................11
         4.2      SURVIVAL...................................................11
         4.3      SUCCESSORS AND ASSIGNS.....................................11
         4.4      SEVERABILITY...............................................12
         4.5      AMENDMENT AND WAIVER.......................................12
         4.6      DELAYS OR OMISSIONS........................................12
         4.7      NOTICES....................................................13
         4.8      ATTORNEYS' FEES............................................13
         4.9      TITLES AND SUBTITLES.......................................13
         4.10     COUNTERPARTS...............................................13

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                AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

         This Amended and Restated Investors' Rights Agreement (the "Agreement")
is entered into as of the 31st day of January, 2000, by and among TUMBLEWEED
COMMUNICATIONS CORP., a Delaware corporation (the "Company"), the Founders (as
hereinafter defined), the persons listed on Exhibit A hereto (the "Investors")
and the persons listed on Exhibit B hereto (collectively, the "Acquisition
Stockholders").

                                    RECITALS

         WHEREAS, the Company, the Founders and the persons listed on Exhibit A
hereto are parties to that certain Amended and Restated Investors' Rights
Agreement dated as of February 26, 1999 (the "Prior Agreement") pursuant to
which the Company granted certain of such persons certain participation,
registration and information rights;

         WHEREAS, on November 18, 1999, the Company entered into an Agreement
and Plan of Merger by and among the Company, Keyhole Acquisition Corp., a
Delaware corporation and wholly-owned subsidiary of the Company, and Worldtalk
Communications Corporation, a Delaware corporation (the "Merger Agreement"),
pursuant to which the Company agreed to extend registration rights to certain
additional persons as set forth below; and

         WHEREAS, the Company, the Founders and the Investors intend that this
Agreement shall supersede the Prior Agreement, and that the Prior Agreement
shall terminate immediately upon the execution of this Agreement.

         NOW, THEREFORE, in consideration of the mutual promises,
representations, warranties, covenants and conditions set forth in this
Agreement and in the Merger Agreement, the parties mutually agree as follows:

SECTION 1.        GENERAL

         1.1 DEFINITIONS. As used in this Agreement the following terms shall
have the following respective meanings:

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Form S-3" means such form under the Securities Act as in effect on the
date hereof or any successor registration form under the Securities Act
subsequently adopted by the SEC which permits inclusion or incorporation of
substantial information by reference to other documents filed by the Company
with the SEC.

         "Founders" shall mean Jeffrey C. Smith and Jean-Christophe D. Bandini.

         "Holder" means any person owning of record Registrable Securities that
have not been sold to the public or any assignee of record of such Registrable
Securities in accordance with Section 3.9 hereof, except that the Acquisition
Stockholders shall not be deemed Holders for purposes of Sections 3.1 and 3.3
hereof.

         "Initial Offering" means the Company's first firm commitment
underwritten public offering of its Common Stock (the "Common Stock") registered
under the Securities Act.

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         "Register," "Registered," and "Registration" refer to a registration
effected by preparing and filing a registration statement in compliance with the
Securities Act, and the declaration or ordering of effectiveness of such
registration statement or document.

         "Registrable Securities" means (i) Common Stock of the Company issued
or issuable upon conversion of the Shares; and (ii) any Common Stock of the
Company issued as (or issuable upon the conversion or exercise of any warrant,
right or other security which is issued as) a dividend or other distribution
with respect to, or in exchange for or in replacement of, such above-described
securities. Notwithstanding the foregoing, Registrable Securities shall not
include any securities sold by a person to the public either pursuant to a
registration statement or Rule 144 or sold in a private transaction in which the
transferor's rights under Section 3 of this Agreement are not assigned.

         "Registrable Securities then outstanding" shall be the number of shares
determined by calculating the total number of shares of the Company's Common
Stock that are Registrable Securities and either (1) are then issued and
outstanding or (2) are issuable pursuant to then exercisable or convertible
securities.

         "Registration Expenses" shall mean all expenses incurred by the Company
in complying with Sections 3.1, 3.2 and 3.3 hereof, including, without
limitation, all registration and filing fees, printing expenses, fees and
disbursements of counsel for the Company, blue sky fees and expenses, incident
to or required by any such registration (but excluding the compensation of
regular employees of the Company which shall be paid in any event by the
Company). In the case of registration pursuant to Section 3.1, "Registration
Expenses" also shall include the reasonable fees and expenses of a single
special legal counsel for the Holders not to exceed $15,000 and the fees and
expenses of any special audits not to exceed $15,000 related to such
registration.

         "Securities Act" shall mean the Securities Act of 1933, as amended.

         "SEC" or "Commission" means the Securities and Exchange Commission.

         "Selling Expenses" shall mean all underwriting discounts and selling
commissions applicable to the sale.

         "Shares" shall mean (i) shares of Common Stock beneficially owned or
held by the Founders, (ii) shares of Common Stock issued to the Investors and
(iii) for purposes of Section 1, Sections 3.2, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 and
3.10 and Section 4 only, shares of Common Stock (the "Acquisition Shares")
issued to the Acquisition Stockholders.

SECTION 2. RESTRICTIONS ON TRANSFER

           (a) Each Holder agrees not to make any disposition of all or any
portion of the Shares or Registrable Securities unless and until:

               (i) There is then in effect a registration statement under the
Securities Act covering such proposed disposition and such disposition is made
in accordance with such registration statement; or

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               (ii) (A) The transferee has agreed in writing to be bound by this
Section 2, (B) such Holder shall have notified the Company of the proposed
disposition and shall have furnished the Company with a detailed statement of
the circumstances surrounding the proposed disposition, and (C) if reasonably
requested by the Company, such Holder shall have furnished the Company with an
opinion of counsel, reasonably satisfactory to the Company, that such
disposition will not require registration of such shares under the Securities
Act.

               Notwithstanding the provisions of paragraphs (i) and (ii) above,
no such registration statement or opinion of counsel shall be necessary for a
transfer by a Holder which is (A) a partnership to its partners or former
partners in accordance with partnership interests, (B) a corporation to its
shareholders in accordance with their interest in the corporation, (C) a limited
liability company to its members or former members in accordance with their
interest in the limited liability company, or (D) to the Holder's family member
or trust for the benefit of an individual Holder, provided the transferee will
be subject to the terms of this Section 2 to the same extent as if he were an
original Holder hereunder.

           (b) Each certificate representing Shares or Registrable Securities
shall (unless otherwise permitted by the provisions of the Agreement) be stamped
or otherwise imprinted with a legend substantially similar to the following (in
addition to any legend required under applicable state securities laws or as
provided elsewhere in this Agreement):

         THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
         SECURITIES ACT OF 1933 (THE "ACT") AND MAY NOT BE OFFERED, SOLD OR
         OTHERWISE TRANSFERRED, ASSIGNED, PLEDGED OR HYPOTHECATED UNLESS AND
         UNTIL REGISTERED UNDER THE ACT OR UNLESS THE COMPANY HAS RECEIVED AN
         OPINION OF COUNSEL SATISFACTORY TO THE COMPANY AND ITS COUNSEL THAT
         SUCH REGISTRATION IS NOT REQUIRED.

           (c) The Company shall be obligated to reissue promptly unlegended
certificates at the request of any holder thereof if the holder shall have
obtained an opinion of counsel (which counsel may be counsel to the Company)
reasonably acceptable to the Company to the effect that the securities proposed
to be disposed of may lawfully be so disposed of without registration,
qualification or legend.

           (d) Any legend endorsed on an instrument pursuant to applicable state
securities laws and the stop-transfer instructions with respect to such
securities shall be removed upon receipt by the Company of an order of the
appropriate blue sky authority authorizing such removal.

SECTION 3. REGISTRATION.

     3.1 DEMAND REGISTRATION.

           3.1.1 Subject to the conditions of this Section 3.1, if the Company
shall receive a written request from the Holders of more than twenty percent
(20%) of the Registrable Securities then outstanding (the "Initiating Holders")
that the Company file a registration statement under the Securities Act covering
the registration of at least twenty percent (20%) of their Registrable
Securities or a lesser percentage if the Registrable Securities to be registered
will have an aggregate offering price to the public in excess of $2,000,000,
then the Company shall, within thirty (30) days of the receipt thereof, give
written notice of such

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request to all Holders, and subject to the limitations of this Section 3.1,
effect, as soon as practicable, the registration under the Securities Act of all
Registrable Securities that the Holders request to be registered.

           3.1.2 If the Initiating Holders intend to distribute the Registrable
Securities covered by their request by means of an underwriting, they shall so
advise the Company as a part of their request made pursuant to this Section 3.1
and the Company shall include such information in the written notice referred to
in Section 3.1.1. In such event, the right of any Holder to include its
Registrable Securities in such registration shall be conditioned upon such
Holder's participation in such underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting (unless otherwise mutually agreed by
a majority in interest of the Initiating Holders and such Holder) to the extent
provided herein. All Holders proposing to distribute their securities through
such underwriting shall enter into an underwriting agreement in customary form
with the underwriter or underwriters selected for such underwriting by a
majority in interest of the Initiating Holders (which underwriter or
underwriters shall be reasonably acceptable to the Company). Notwithstanding any
other provision of this Section 3.1, if the underwriter advises the Company that
marketing factors require a limitation of the number of securities to be
underwritten (including Registrable Securities) then the Company shall so advise
all Holders of Registrable Securities which would otherwise be underwritten
pursuant hereto, and the number of shares that may be included in the
underwriting shall be allocated to the Holders of such Registrable Securities on
a pro rata basis based on the number of Registrable Securities held by all such
Holders (including the Initiating Holders). Any Registrable Securities excluded
or withdrawn from such underwriting shall be withdrawn from the registration.

           3.1.3 The Company shall not be required to effect a registration
pursuant to this Section 3.1 prior to the earlier of:

                 (i)    August 15, 2001; or

                 (ii)   after the Company has effected two (2) registrations
pursuant to this Section 3.1, and such registrations have been declared or
ordered effective; or

                 (iii)  during the period starting with the date of filing of,
and ending on the date one (1) year following the effective date of, the
registration statement pertaining to the Initial Offering; or

                 (iv)   if within thirty (30) days of receipt of a written
request from Initiating Holders pursuant to Section 3.1.1, the Company gives
notice to the Holders of the Company's intention to make its Initial Offering
within ninety (90) days; or

                 (v)    if the Company shall furnish to Holders requesting a
registration statement pursuant to this Section 3.1, a certificate signed by the
Chairman of the Board stating that in the good faith judgment of the Board of
Directors of the Company, it would be detrimental to the Company and its
shareholders for such registration statement to be effected at such time, in
which event the Company shall have the right to defer such filing for a period
of not more than ninety (90) days after receipt of the request of the Initiating
Holders; provided that such right to delay a request shall be exercised by the
Company no more than twice in any one-year period.

     3.2 PIGGYBACK REGISTRATIONS. The Company shall notify all Holders of
Registrable Securities in writing at least thirty (30) days prior to the
filing of any registration statement under the Securities Act for purposes of
a public offering of securities of the Company (including, but not limited
to, registration

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statements relating to secondary offerings of securities of the Company, but
excluding registration statements relating to employee benefit plans or with
respect to corporate reorganizations or other transactions under Rule 145 of the
Securities Act) and will afford each such Holder an opportunity to include in
such registration statement all or part of such Registrable Securities held by
such Holder. Each Holder desiring to include in any such registration statement
all or any part of the Registrable Securities held by it shall, within fifteen
(15) days after the above-described notice from the Company, so notify the
Company in writing. Such notice shall state the intended method of disposition
of the Registrable Securities by such Holder. If a Holder decides not to include
all of its Registrable Securities in any registration statement thereafter filed
by the Company, such Holder shall nevertheless continue to have the right to
include any Registrable Securities in any subsequent such registration statement
or registration statements as may be filed by the Company with respect to
offerings of its securities, all upon the terms and conditions set forth herein.

           3.2.1 UNDERWRITING. If the registration statement under which the
Company gives notice under this Section 3.2 is for an underwritten offering, the
Company shall so advise the Holders of Registrable Securities. In such event,
the right of any such Holder to be included in a registration pursuant to this
Section 3.2 shall be conditioned upon such Holder's participation in such
underwriting and the inclusion of such Holder's Registrable Securities in the
underwriting to the extent provided herein. All Holders proposing to distribute
their Registrable Securities through such underwriting shall enter into an
underwriting agreement in customary form with the underwriter or underwriters
selected for such underwriting by the Company. Notwithstanding any other
provision of the Agreement, if the underwriter determines that marketing factors
require a limitation of the number of shares to be underwritten, the number of
shares that may be included in the underwriting shall be allocated, first, to
the Company; second, to the Holders on a pro rata basis based on the total
number of Registrable Securities held by the Holders; and third, to any
shareholder of the Company (other than a Holder) on a pro rata basis. No such
reduction shall reduce the securities being offered by the Company for its own
account to be included in the registration and underwriting.

           3.2.2 RIGHT TO TERMINATE REGISTRATION. The Company shall have the
right to terminate or withdraw any registration initiated or withdraw any
registration initiated by it under this Section 3.2 prior to the effectiveness
of such registration whether or not any Holder has elected to include securities
in such registration. The Registration Expenses of such withdrawn registration
shall be borne by the Company in accordance with Section 3.4 hereof.

     3.3 FORM S-3 REGISTRATION. In case the Company shall receive from any
Holder or Holders of Registrable Securities a written request or requests
that the Company effect a registration on Form S-3 (or any successor to Form
S-3) or any similar short-form registration statement and any related
qualification or compliance with respect to all or a part of the Registrable
Securities owned by such Holder or Holders, the Company will:

           3.3.1 promptly give written notice of the proposed registration, and
any related qualification or compliance, to all other Holders of Registrable
Securities; and

           3.3.2 as soon as practicable, effect such registration and all such
qualifications and compliances as may be so requested and as would permit or
facilitate the sale and distribution of all or such portion of such Holder's or
Holders' Registrable Securities as are specified in such request, together with
all or such portion of the Registrable Securities of any other Holder or Holders
joining in such request as are specified in a written request given within
fifteen (15) days after receipt of such written notice from the

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Company; PROVIDED, HOWEVER, that the Company shall not be obligated to effect
any such registration, qualification or compliance pursuant to this Section 3.3:

                      (i) if Form S-3 (or any successor or similar form) is not
available for such offering by the Holders, or

                      (ii) if the Holders, together with the holders of any
other securities of the Company entitled to inclusion in such registration,
propose to sell Registrable Securities and such other securities (if any) at an
aggregate price to the public of less than $1,000,000, or

                      (iii) if the Company shall furnish to the Holders a
certificate signed by the Chairman of the Board of Directors of the Company
stating that in the good faith judgment of the Board of Directors of the
Company, it would be seriously detrimental to the Company and its shareholders
for such Form S-3 Registration to be effected at such time, in which event the
Company shall have the right to defer the filing of the Form S-3 registration
statement for a period of not more than ninety (90) days after receipt of the
request of the Holder or Holders under this Section 3.3, provided, that such
right to delay a request shall be exercised by the Company no more than twice in
any one-year period, or

                      (iv) if the Company has already effected two (2)
registrations on Form S-3 for the Holders pursuant to this Section 3.3, or

                      (v) in any particular jurisdiction in which the Company
would be required to qualify to do business or to execute a general consent to
service of process in effecting such registration, qualification or compliance.

           3.3.3 Subject to the foregoing, the Company shall file a Form S-3
registration statement covering the Registrable Securities and other securities
so requested to be registered as soon as practicable after receipt of the
request or requests of the Holders.

     3.4 EXPENSES OF REGISTRATION. Except as specifically provided herein,
all Registration Expenses incurred in connection with any registration,
qualification or compliance pursuant to Section 3.1 or any registration under
Section 3.2 or Section 3.3 herein shall be borne by the Company. All Selling
Expenses incurred in connection with any registrations hereunder shall be
borne by the holders of the securities so registered pro rata on the basis of
the number of shares so registered. The Company shall not, however, be
required to pay for expenses of any registration proceeding begun pursuant to
Section 3.1 or 3.3, the request of which has been subsequently withdrawn by
the Initiating Holders unless (a) the withdrawal is based upon material
adverse information concerning the Company of which the Initiating Holders
were not aware at the time of such request or (b) the Holders of a majority
of Registrable Securities agree to forfeit their right to one requested
registration pursuant to Section 3.1 or Section 3.3, as applicable, in which
event such right shall be forfeited by all Holders. If the Holders are
required to pay the Registration Expenses, such expenses shall be borne by
the holders of securities (including Registrable Securities) requesting such
registration in proportion to the number of shares for which registration was
requested. If the Company is required to pay the Registration Expenses of a
withdrawn offering pursuant to clause (a) above, then the Holders shall not
forfeit their rights pursuant to Section 3.1 or Section 3.3 to a demand
registration.

     3.5 OBLIGATIONS OF THE COMPANY. Whenever required to effect the
registration of any Registrable Securities, the Company shall, as
expeditiously as reasonably possible:

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           3.5.1 Prepare and file with the SEC a registration statement with
respect to such Registrable Securities and use all reasonable efforts to cause
such registration statement to become effective, and, upon the request of the
Holders of a majority of the Registrable Securities registered thereunder, keep
such registration statement effective for up to sixty (60) days or, if earlier,
until the Holder or Holders have completed the distribution related thereto.

           3.5.2 Prepare and file with the SEC such amendments and supplements
to such registration statement and the prospectus used in connection with such
registration statement as may be necessary to comply with the provisions of the
Securities Act with respect to the disposition of all securities covered by such
registration statement.

           3.5.3 Furnish to the Holders such number of copies of a prospectus,
including a preliminary prospectus, in conformity with the requirements of the
Securities Act, and such other documents as they may reasonably request in order
to facilitate the disposition of Registrable Securities owned by them.

           3.5.4 Use all reasonable efforts to register and qualify the
securities covered by such registration statement under such other securities or
Blue Sky laws of such jurisdictions as shall be reasonably requested by the
Holders, provided that the Company shall not be required in connection therewith
or as a condition thereto to qualify to do business or to file a general consent
to service of process in any such states or jurisdictions.

           3.5.5 In the event of any underwritten public offering, enter into
and perform its obligations under an underwriting agreement, in usual and
customary form, with the managing underwriter(s) of such offering. Each Holder
participating in such underwriting shall also enter into and perform its
obligations under such an agreement.

           3.5.6 Notify each Holder of Registrable Securities covered by such
registration statement at any time when a prospectus relating thereto is
required to be delivered under the Securities Act of the happening of any event
as a result of which the prospectus included in such registration statement, as
then in effect, includes an untrue statement of a material fact or omits to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading in the light of the circumstances then
existing.

           3.5.7 Furnish, at the request of a majority of the Holders
participating in the registration, on the date that such Registrable Securities
are delivered to the underwriters for sale, if such securities are being sold
through underwriters, (i) an opinion, dated as of such date, of the counsel
representing the Company for the purposes of such registration, in form and
substance as is customarily given to underwriters in an underwritten public
offering and (ii) a letter dated as of such date, from the independent certified
public accountants of the Company, in form and substance as is customarily given
by independent certified public accountants to underwriters in an underwritten
public offering addressed to the underwriters, if any, and if permitted by
applicable accounting standards, to the Holders requesting registration of
Registrable Securities.

     3.6 TERMINATION OF REGISTRATION RIGHTS. All registration rights granted
under this Section 3 shall terminate and be of no further force and effect
five (5) years after the date of the Company's Initial Offering. In addition,
a Holder's registration rights shall expire if (i) the Company has completed
its Initial Offering and is subject to the provisions of the Exchange Act,
(ii) such Holder (together with its affiliates, partners and former partners)
holds less than 1% of the Company's outstanding Common Stock (treating all

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shares of convertible Preferred Stock of the Company (the "Preferred Stock") on
an as converted basis) and (iii) all Registrable Securities held by such Holder
may be sold under Rule 144 during any one hundred eighty (180) day period.

     3.7 DELAY OF REGISTRATION; FURNISHING INFORMATION.

          3.7.1 No Holder shall have any right to obtain or seek an injunction
restraining or otherwise delaying any such registration as the result of any
controversy that might arise with respect to the interpretation or
implementation of this Section 3.

          3.7.2 It shall be a condition precedent to the obligations of the
Company to take any action pursuant to Section 3.1, 3.2 or 3.3 that the selling
Holders shall furnish to the Company such information regarding themselves, the
Registrable Securities held by them and the intended method of disposition of
such securities as shall be required to effect the registration of their
Registrable Securities.

     3.8 INDEMNIFICATION. In the event any Registrable Securities are included
in a registration statement under Sections 3.1, 3.2 or 3.3:

          3.8.1 To the extent permitted by law, the Company will indemnify and
hold harmless each Holder, the partners, officers, directors and legal counsel
of each Holder, any underwriter (as defined in the Securities Act) for such
Holder and each person, if any, who controls such Holder or underwriter within
the meaning of the Securities Act or the Exchange Act, against any losses,
claims, damages, or liabilities (joint or several) to which they may become
subject under the Securities Act, the Exchange Act or other federal or state
law, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon any of the following statements,
omissions or violations (collectively a "Violation") by the Company: (i) any
untrue statement or alleged untrue statement of a material fact contained in
such registration statement, including any preliminary prospectus or final
prospectus contained therein or any amendments or supplements thereto, (ii) the
omission or alleged omission to state therein a material fact required to be
stated therein, or necessary to make the statements therein not misleading, or
(iii) any violation or alleged violation by the Company of the Securities Act,
the Exchange Act, any state securities law or any rule or regulation promulgated
under the Securities Act, the Exchange Act or any state securities law in
connection with the offering covered by such registration statement; and the
Company will reimburse each such Holder, partner, officer or director,
underwriter or controlling person for any legal or other expenses reasonably
incurred by them in connection with investigating or defending any such loss,
claim, damage, liability or action; provided however, that the indemnity
agreement contained in this Section 3.8.1 shall not apply to amounts paid in
settlement of any such loss, claim, damage, liability or action if such
settlement is effected without the consent of the Company, which consent shall
not be unreasonably withheld, nor shall the Company be liable in any such case
for any such loss, claim, damage, liability or action to the extent that it
arises out of or is based upon a Violation which occurs in reliance upon and in
conformity with written information furnished expressly for use in connection
with such registration by such Holder, partner, officer, director, underwriter
or controlling person of such Holder.

          3.8.2 To the extent permitted by law, each Holder will, if Registrable
Securities held by such Holder are included in the securities as to which such
registration, qualifications or compliance is being effected, indemnify and hold
harmless the Company, each of its directors, its officers, and legal counsel and
each person, if any, who controls the Company within the meaning of the
Securities Act, any underwriter and any other Holder selling securities under
such registration statement or any of such other Holder's partners,

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directors or officers or any person who controls such Holder, against any
losses, claims, damages or liabilities (joint or several) to which the Company
or any such director, officer, controlling person, underwriter or other such
Holder, or partner, director, officer or controlling person of such other Holder
may become subject under the Securities Act, the Exchange Act or other federal
or state law, insofar as such losses, claims, damages or liabilities (or actions
in respect thereto) arise out of or are based upon any Violation, in each case
to the extent (and only to the extent) that such Violation occurs in reliance
upon and in conformity with written information furnished by such Holder under
an instrument duly executed by such Holder and stated to be specifically for use
in connection with such registration; and each such Holder will reimburse any
legal or other expenses reasonably incurred by the Company or any such director,
officer, controlling person, underwriter or other Holder, or partner, officer,
director or controlling person of such other Holder in connection with
investigating or defending any such loss, claim, damage, liability or action if
it is judicially determined that there was such a Violation; PROVIDED, HOWEVER,
that the indemnity agreement contained in this Section 3.8.2 shall not apply to
amounts paid in settlement of any such loss, claim, damage, liability or action
if such settlement is effected without the consent of the Holder, which consent
shall not be unreasonably withheld; provided further, that in no event shall any
indemnity under this Section 3.8 exceed the proceeds from the offering received
by such Holder.

          3.8.3 Promptly after receipt by an indemnified party under this
Section 3.8 of notice of the commencement of any action (including any
governmental action), such indemnified party will, if a claim in respect thereof
is to be made against any indemnifying party under this Section 3.8, deliver to
the indemnifying party a written notice of the commencement thereof and the
indemnifying party shall have the right to participate in, and, to the extent
the indemnifying party so desires, jointly with any other indemnifying party
similarly noticed, to assume the defense thereof with counsel mutually
satisfactory to the parties; PROVIDED, HOWEVER, that an indemnified party shall
have the right to retain its own counsel, with the fees and expenses to be paid
by the indemnifying party, if representation of such indemnified party by the
counsel retained by the indemnifying party would be inappropriate due to actual
or potential differing interests between such indemnified party and any other
party represented by such counsel in such proceeding. The failure to deliver
written notice to the indemnifying party within a reasonable time of the
commencement of any such action, if materially prejudicial to its ability to
defend such action, shall relieve such indemnifying party of any liability to
the indemnified party under this Section 3.8, but the omission so to deliver
written notice to the indemnifying party will not relieve it of any liability
that it may have to any indemnified party otherwise than under this Section 3.8.

          3.8.4 If the indemnification provided for in this Section 3.8 is held
by a court of competent jurisdiction to be unavailable to an indemnified party
with respect to any losses, claims, damages or liabilities referred to herein,
the indemnifying party, in lieu of indemnifying such indemnified party
thereunder, shall to the extent permitted by applicable law contribute to the
amount paid or payable by such indemnified party as a result of such loss,
claim, damage or liability in such proportion as is appropriate to reflect the
relative fault of the indemnifying party on the one hand and of the indemnified
party on the other in connection with the Violation(s) that resulted in such
loss, claim, damage or liability, as well as any other relevant equitable
considerations. The relative fault of the indemnifying party and of the
indemnified party shall be determined by a court of law by reference to, among
other things, whether the untrue or alleged untrue statement of a material fact
or the omission to state a material fact relates to information supplied by the
indemnifying party or by the indemnified party and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission; provided, that in no event shall any contribution by a
Holder hereunder exceed the proceeds from the offering received by such Holder.

                                        9

<PAGE>

          3.8.5 The obligations of the Company and Holders under this Section
3.8 shall survive completion of any offering of Registrable Securities in a
registration statement. No Indemnifying Party, in the defense of any such claim
or litigation, shall, except with the consent of each Indemnified Party, consent
to entry of any judgment or enter into any settlement which does not include as
an unconditional term thereof the giving by the claimant or plaintiff to such
Indemnified Party of a release from all liability in respect to such claim or
litigation. In the event any offering of Registrable Securities is underwritten,
and the underwriting agreement provides for indemnification and/or contribution
by the Company and the Holders offering securities thereunder, the
indemnification and/or contribution obligations of the Company and the Holders
hereunder shall in no event exceed the obligations of the parties set forth in
such underwriting agreement.

     3.9 ASSIGNMENT OF REGISTRATION RIGHTS. The rights to cause the Company to
register Registrable Securities pursuant to this Section 3 may be assigned by a
Holder to a transferee or assignee of Registrable Securities which (i) is a
subsidiary, parent, general partner, limited partner or retired partner of a
Holder, or an employee of a partner or shareholder of a Holder or, if such
partner or shareholder of Holder is a partnership or corporation, a partner or
shareholder of such partnership or corporation, (ii) is a Holder's family member
or trust for the benefit of an individual Holder, or (iii) acquires at least one
hundred thousand (100,000) shares of Registrable Securities (as adjusted for
stock splits and combinations); PROVIDED, HOWEVER, (A) the transferor shall,
within ten (10) days after such transfer, furnish to the Company written notice
of the name and address of such transferee or assignee and the securities with
respect to which such registration rights are being assigned and (B) such
transferee shall agree to be subject to all restrictions set forth in this
Agreement.

     3.10 AMENDMENT OF REGISTRATION RIGHTS. Any provision of this Section 3 may
be amended and the observance thereof may be waived (either generally or in a
particular instance and either retroactively or prospectively), only with the
written consent of the Company and the Holders of more than fifty percent (50%)
of the Registrable Securities (excluding the Acquisition Shares) which are not
held by the Founders, unless such amendment or waiver adversely affects the
Founders differently than the other Holders. Any amendment or waiver effected in
accordance with this Section 3.10 shall be binding upon each Holder and the
Company. By acceptance of any benefits under this Section 3, Holders of
Registrable Securities hereby agree to be bound by the provisions hereunder.

     3.11 LIMITATION ON SUBSEQUENT REGISTRATION RIGHTS. After the date of this
Agreement, if the Company shall enter into any agreement with any holder or
prospective holder of any securities of the Company that would grant such holder
registration rights senior to those granted to the Holders hereunder, then the
Company shall grant the Holders such senior registration rights.

     3.12 "MARKET STAND-OFF" AGREEMENT. If requested by the Company as the
representative of the underwriters of Common Stock (or other securities) of the
Company, each Holder shall not sell or otherwise transfer or dispose of any
shares of Common Stock (or other securities) of the Company held by such Holder
(other than those included in the registration) for a period specified by the
representative of the underwriters not to exceed one hundred eighty (180) days
following the effective date of a registration statement of the Company filed
under the Securities Act, provided that:

          (i) such agreement shall apply only to the Company's Initial Offering;
              and

                                       10

<PAGE>

          (ii) all officers and directors of the Company and their affiliates
               enter into similar agreements.

     The obligations described in this Section 3.12 shall not apply to a
registration relating solely to employee benefit plans on Form S-1 or Form S-8
or similar forms that may be promulgated in the future, or a registration
relating solely to a Commission Rule 145 transaction on Form S-4 or similar
forms that may be promulgated in the future. The Company may impose
stop-transfer instructions with respect to the shares of Common Stock (or other
securities) subject to the foregoing restriction until the end of said one
hundred eighty (180) day period.

     3.13 RULE 144 REPORTING. With a view to making available to the Holders the
benefits of certain rules and regulations of the SEC which may permit the sale
of the Registrable Securities to the public without registration, the Company
agrees to use its best efforts to:

          (a) Make and keep public information available, as those terms are
understood and defined in SEC Rule 144 or any similar or analogous rule
promulgated under the Securities Act, at all times after the effective date of
the first registration filed by the Company for an offering of its securities to
the general public;

          (b) File with the SEC, in a timely manner, all reports and other
documents required of the Company under the Exchange Act; and

          (c) So long as a Holder owns any Registrable Securities, furnish to
such Holder forthwith upon request: a written statement by the Company as to its
compliance with the reporting requirements of said Rule 144 of the Securities
Act, and of the Exchange Act (at any time after it has become subject to such
reporting requirements); a copy of the most recent annual or quarterly report of
the Company; and such other reports and documents as a Holder may reasonably
request in availing itself of any rule or regulation of the SEC allowing it to
sell any such securities without registration.

SECTION 4. MISCELLANEOUS.

     4.1 GOVERNING LAW. This Agreement shall be governed by and construed under
the laws of the State of California as applied to agreements among California
residents entered into and to be performed entirely within California.

     4.2 SURVIVAL. The representations, warranties, covenants, and agreements
made herein shall survive any investigation made by any Holder and the closing
of the transactions contemplated hereby. All statements as to factual matters
contained in any certificate or other instrument delivered by or on behalf of
the Company pursuant hereto in connection with the transactions contemplated
hereby shall be deemed to be representations and warranties by the Company
hereunder solely as of the date of such certificate or instrument.

     4.3 SUCCESSORS AND ASSIGNS. Except as otherwise expressly provided herein,
the provisions hereof shall inure to the benefit of, and be binding upon, the
successors, assigns, heirs, executors, and administrators of the parties hereto
and shall inure to the benefit of and be enforceable by each person who shall be
a holder of Registrable Securities from time to time; PROVIDED, HOWEVER,

                                       11

<PAGE>

that prior to the receipt by the Company of adequate written notice of the
transfer of any Registrable Securities specifying the full name and address of
the transferee, the Company may deem and treat the person listed as the holder
of such shares in its records as the absolute owner and holder of such shares
for all purposes, including the payment of dividends or any redemption price.

     4.4 SEVERABILITY. In case any provision of the Agreement 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.

     4.5 AMENDMENT AND WAIVER.

          4.5.1 Except as otherwise expressly provided, this Agreement may be
amended or modified only upon the written consent of the Company and the holders
of more than fifty percent (50%) of the Registrable Securities which are not
held by the Founders unless the Founders would be adversely affected differently
than the other Holders, in which case a vote by a majority of the Founders shall
also be required.

          4.5.2 Except as otherwise expressly provided, the obligations of the
Company and the rights of the Holders under this Agreement may be waived only
with the written consent of the holders of more than fifty percent (50%) of the
Registrable Securities which are not held by the Founders unless the Founders
would be adversely affected differently than the other Holders, in which case a
vote by a majority of the Founders shall also be required.

          4.5.3 Notwithstanding the foregoing, this Agreement may be amended
with only the written consent of the Company to (i) include additional
purchasers of the Company's securities as "Holders" and parties hereto or (ii)
to include shares of Common Stock subsequently issued by the Company as
Registrable Securities hereunder.

          4.5.4 By execution of this Agreement, the parties to the Prior
Agreement consent to the amendment and termination of the Prior Agreement.

          4.5.5 Notwithstanding the foregoing and for avoidance of doubt, no
Holder of Acquisition Shares shall be entitled, directly or indirectly, to
initiate or create any obligation on the part of the Company to file a
registration statement.

     4.6 DELAYS OR OMISSIONS. It is agreed that no delay or omission to exercise
any right, power, or remedy accruing to any Holder, upon any breach, default or
noncompliance of the Company under this Agreement shall impair any such right,
power, or remedy, nor shall it be construed to be a waiver of any such breach,
default or noncompliance, or any acquiescence therein, or of any similar breach,
default or noncompliance thereafter occurring. It is further agreed that any
waiver, permit, consent, or approval of any kind or character on any Holder's
part of any breach, default or noncompliance under the Agreement or any waiver
on such Holder's part of any provisions or conditions of this Agreement must be
in writing and shall be effective only to the

                                       12

<PAGE>

extent specifically set forth in such writing. All remedies, either under this
Agreement, by law, or otherwise afforded to Holders, shall be cumulative and not
alternative.

     4.7 NOTICES. All notices required or permitted hereunder shall be in
writing and shall be deemed effectively given: (i) upon personal delivery to the
party to be notified, (ii) when sent by confirmed telex or facsimile if sent
during normal business hours of the recipient; if not, then on the next business
day, (iii) five (5) days after having been sent by registered or certified mail,
return receipt requested, postage prepaid, or (iv) one (1) day after deposit
with a nationally recognized overnight courier, specifying next day delivery,
with written verification of receipt. All communications shall be sent to the
party to be notified at the address as set forth on the signature pages hereof
or Exhibit A or Exhibit B hereto or at such other address as such party may
designate by ten (10) days advance written notice to the other parties hereto.

     4.8 ATTORNEYS' FEES. In the event that any dispute among the parties to
this Agreement should result in litigation, the prevailing party in such dispute
shall be entitled to recover from the losing party all fees, costs and expenses
of enforcing any right of such prevailing party under or with respect to this
Agreement, including without limitation, such reasonable fees and expenses of
attorneys and accountants, which shall include, without limitation, all fees,
costs and expenses of appeals.

     4.9 TITLES AND SUBTITLES. The titles of the sections and subsections of
this Agreement are for convenience of reference only and are not to be
considered in construing this Agreement.

     4.10 COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

                                       13

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have executed this Amended and
Restated Investors' Rights Agreement as of the date set forth in the first
paragraph hereof.

COMPANY:                                         FOUNDERS:

TUMBLEWEED COMMUNICATIONS CORP.                  _______________________________
                                                 Jeffrey C. Smith

By: _________________________________
    Jeffrey C. Smith
    President and Chief Executive Officer        _______________________________
                                                 Jean-Christophe D. Bandini

                                       14

<PAGE>

INVESTORS:                                   SOFINNOVA VENTURE PARTNERS III
                                             By: Sofinnova Management L.P.,
HIKARI TSUSHIN, INC.                             Its General Partner

By: _______________________________          By: _______________________________
    Name:                                        Name:
    Title:                                       Title:

DRAPER FISHER ASSOCIATES FUND III, L.P.

By: _______________________________          ___________________________________
    Name:                                    Jeffrey C. Smith
    Title:

DRAPER FISHER PARTNERS, L.L.C.               TOLMI, L.L.C.

By: _______________________________          By: _______________________________
    Name:                                        Name:
    Title:                                       Title:

ADOBE VENTURES II, L.P.                      BESSEC VENTURES IV, L.P.
By: H&Q Adobe Ventures Management II, LLC    By:  Deer IV & Co., LLC,
    Its General Partner                           its General Partner

By: _______________________________          By: _______________________________
    Name:                                        Name:
    Title:                                       Title:

H&Q TUMBLEWEED INVESTORS, L.P.               BESSEMER VENTURE PARTNERS IV L.P.
                                             By:  Deer IV & Co.,
                                                  its General Partner

By: _______________________________          By: _______________________________
    Name:                                        Name:
    Title:                                       Title:

                                       15

<PAGE>

AUGUST CAPITAL, L.P., FOR ITSELF AND AS      BAYVIEW INVESTORS
NOMINEE FOR:
AUGUST CAPITAL STRATEGIC PARTNERS, L.P.
AUGUST CAPITAL ASSOCIATES, L.P.
By: August Capital Management, L.L.C.,       By: _______________________________
    the general partner for each of the          Name:
    foregoing                                    Title:

By: _______________________________          CHARLES CORFIELD LIVING TRUST
    Name:                                    U/A 12/19/91
    Title:

INNOVACOM 2                                  By: _______________________________
                                                 Name:
                                                 Title:

By: _______________________________
    Name:
    Title:                                   ___________________________________
                                             Mark Pastore

DRAPER RICHARDS L.P.
By: Draper Richards Management Co.,
    its General Partner
                                             ___________________________________
                                             Donald R. Emery

By: _______________________________
    Name:
    Title:                                   ___________________________________
                                             Gregory C. Smith

___________________________________          GC&H INVESTMENTS
Jean-Christophe D. Bandini

___________________________________          By: _______________________________
Jeffrey J. Baymor                                Name:
                                                 Title:

___________________________________          ___________________________________
Eric Hautemont                               William A. Sahlman

                                       16

<PAGE>

                                             DRAPER ASSOCIATES, L.P.

___________________________________          By: __________, its General Partner
Joseph B. Lassiter III

___________________________________          By: _______________________________
Kenneth H. Keller                                Name:
                                                 Title:

HAMBRECHT & QUIST EMPLOYEE VENTURE           UNITED PARCEL SERVICE GENERAL
FUND, L.P.                                   SERVICES CO.
By:  H&Q Venture Management, L.L.C.
Its: General Partner

By: _______________________________          By: _______________________________
    Name:                                        Name:
    Title:                                       Title:

___________________________________          HILAL CAPITAL, LP
Joseph C. Consul

                                             By: _______________________________
___________________________________              Name:
Charles N. Corfield                              Title:

                                             HILAL CAPITAL, QP, LP
___________________________________
Phil Hilal

HILAL CAPITAL ASSOCIATES, LLC                By: _______________________________
                                                 Name:
                                                 Title:

By: _______________________________          HILAL CAPITAL INTERNATIONAL, LTD.
    Name:
    Title:

                                             By: _______________________________
                                                 Name:
                                                 Title:

                                       17

<PAGE>

HIGHBRIDGE INTERNATIONAL                     NARRAGANSETT I, LP

By: _______________________________          By: _______________________________
    Name:                                        Name:
    Title:                                       Title:

NARRAGANSETT OFFSHORE LTD.

By: _______________________________
    Name:
    Title:

                                       18

<PAGE>

                                    EXHIBIT A

                          SCHEDULE OF EXISTING PARTIES
                               NAMES AND ADDRESSES

 Adobe Ventures II, L.P.
          c/o Hambrecht & Quist
          One Bush Street
          San Francisco, CA  94104

 August Capital, L.P.
          2480 Sand Hill Road, Suite 101
          Menlo Park, CA  94025

 Jean-Christophe D. Bandini
          3375 Brittan Avenue, #11
          San Carlos, CA  94070

 Jeffrey J. Baymor
          2169 Purisima Creek Road
          Half Moon Bay, CA  94019

 Bayview Investors Ltd.
          555 California Street, Suite 2600
          San Francisco, CA  94104

 Bessec Ventures IV, L.P.
          1400 Old Country Road, Suite 407
          Westbury, NY  11590
          Attention: Robert H. Buescher

 Bessemer Venture Partners IV L.P.
          1400 Old Country Road, Suite 407
          Westbury, NY  11590
          Attention: Robert H. Buescher

 Joseph C. Consul
          1131 Dwyer Avenue
          San Jose, CA  95120

 Charles N. Corfield
 Charles N. Corfield Living Trust u/a 12/19/91
          227 High Street
          Palo Alto, CA  94301

                                       A-1

<PAGE>

Draper Associates, L.P.
Draper Fisher Associates Fund III
Draper Fisher Partners, L.L.C.
         400 Seaport Court, Suite 250
         Redwood City, CA  94063

Draper Richards L.P.
         50 California Street, Suite 2925
         San Francisco, CA  94111
         Attention: Robin Donohoe

Donald R. Emery
         1608 Castro Street
         San Francisco, CA  94114

GC&H Investments
         One Maritime Plaza, 20th Floor
         San Francisco, CA  94111

Hambrecht & Quist Employee Venture Fund, L.P. II
H&Q Tumbleweed Investors, L.P.
         c/o Hambrecht & Quist
         One Bush Street
         San Francisco, CA  94104

Eric Hautemont
         1351 Sacramento Street
         San Francisco, CA  94109

Hikari Tsushin, Inc.
         22F Ohtemachi Nomura Bldg.
         2-1-1 Ohtemachi, Chiyoda-ku, Tokyo
         Japan

Innovacom 2
         455 Market Street, Suite 1440
         San Francisco, CA  94105

Kenneth H. Keller
         3386 Royal Meadow Lane
         San Jose, CA  95135

Joseph B. Lassiter III
         One Concord Road
         Weston, MA  02193

                                       A-2

<PAGE>

Mark R. Pastore
         2320 Moraga Street
         San Francisco, CA  9412

William A. Sahlman
         77 Viles Street
         Weston, MA  02193

Gregory C. Smith
         155 Eleanor Drive
         Woodside, CA  94062

Jeffrey C. Smith
         1305 Altschul Avenue
         Menlo Park, CA  94025

Sofinnova Venture Partners III
         One Market Plaza
         Steuart Tower, Suite 2630
         San Francisco, CA   94105

Tolmi, L.L.C.
         c/o National Registered Agents
               of NV, Inc.
         202 South Minnesota Street
         Carson City, NV  89703

  with a copy to:

         Timothy Tomlinson, Esq.
         Tomlinson Zisko Morosoli & Maser
         200 Page Mill Road, 2nd Floor
         Palo Alto, CA  94306

United Parcel Service General Services Co.
         55 Glenn Lake Parkway North East
         Atlanta, Georgia  30328

                                       A-3

<PAGE>

                                    EXHIBIT B
                             SCHEDULE OF NEW PARTIES
                               NAMES AND ADDRESSES

Hilal Capital, LP                       Phil Hilal
  60 East 42nd Street - Suite 1946        c/o Hilal Capital Management LLC
  New York, New York  10165               60 East 42nd Street - Suite 1946
  Telephone:  212-953-1002                New York, New York  10165
  Facsimile:   212-953-1012               Telephone:  212-953-1002
                                          Facsimile:   212-953-1012

Hilal Capital QP, LP                    Highbridge International
  60 East 42nd Street - Suite 1946        c/o Hilal Capital Management LLC
  New York, New York  10165               60 East 42nd Street - Suite 1946
  Telephone:  212-953-1002                New York, New York  10165
  Facsimile:   212-953-1012               Telephone:  212-953-1002
                                          Facsimile:   212-953-1012

Hilal Capital Associates LLC            Narragansett I, LP
  60 East 42nd Street - Suite 1946        c/o Narragansett Asset Management, LLC
  New York, New York  10165               375 Park Avenue - Suite 1404
  Telephone:  212-953-1002                New York, New York  10152
  Facsimile:   212-953-1012               Telephone:  212-521-5042
                                          Facsimile:   212-521-5029

Hilal Capital International, Ltd.       Narragansett Offshore Ltd.
  c/o Hilal Capital Management LLC         c/o Leo Holdings, LLC
  60 East 42nd Street - Suite 1946         375 Park Avenue - Suite 1404
  New York, New York  10165                New York, New York  10152
  Telephone:  212-953-1002                 Telephone:  212-521-5042
  Facsimile:   212-953-1012                Facsimile:   212-521-5029

                                       B-1<PAGE>

                                                                     Exhibit 4.1
================================================================================

                      ENHANCE FINANCIAL SERVICES GROUP INC.

                                       AND

                       BankOne Trust Company, NA, Trustee

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

                                    INDENTURE

                        Dated as of ______________, 19__

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

                             Senior Debt Securities

================================================================================
<PAGE>

                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----
ARTICLE 1

         DEFINITIONS...........................................................1
         SECTION 1.1  Certain Terms Defined....................................1

ARTICLE 2

         SECURITIES............................................................7
         SECTION 2.1  Forms Generally..........................................7
         SECTION 2.2  Form of Trustee's Certificate of
                      Authentication...........................................8
         SECTION 2.3  Amount Unlimited; Issuable in Series.....................8
         SECTION 2.4  Authentication and Delivery of Securities...............11
         SECTION 2.5  Execution of Securities.................................13
         SECTION 2.6  Certificate of Authentication...........................14
         SECTION 2.7  Denomination and Date of Securities;
                      Payments of Interest....................................14
         SECTION 2.8  Registration, Transfer and Exchange.....................17
         SECTION 2.9  Mutilated, Defaced, Destroyed, Lost and
                      Stolen Securities.......................................21
         SECTION 2.10 Cancellation of Securities, Destruction
                      Thereof.................................................22
         SECTION 2.11 Temporary Securities....................................22
         SECTION 2.12 Compliance with Certain Laws and
                      Regulations.............................................25
         SECTION 2.13 Appointment of Agents with Respect to
                      Certain Calculations....................................25
         SECTION 2.14 Securities Issuable in the Form of a
                      Global Security.........................................26

ARTICLE 3

         COVENANTS OF THE COMPANY.............................................28
         SECTION 3.1  Payment of Principal and Interest.......................28
         SECTION 3.2  Offices for Payment, etc................................29
         SECTION 3.3  Appointment to Fill a Vacancy in Office
                      of Trustee..............................................30
         SECTION 3.4  Paying Agents...........................................30
         SECTION 3.5  Written Statement to Trustee............................32
         SECTION 3.6  Corporate Existence.....................................32
         SECTION 3.7  Additional Amounts......................................32
         SECTION 3.8  Defeasance of Certain Obligations and
                      Certain Events of Default...............................33

                                        i
<PAGE>

                                                                            Page
                                                                            ----
ARTICLE 4

         SECURITYHOLDERS' LISTS AND REPORTS BY THE
         COMPANY AND THE TRUSTEE..............................................35
         SECTION 4.1  Company to Furnish Trustee Information as
                      to Names and Addresses of Securityholders...............35
         SECTION 4.2  Preservation and Disclosure of
                      Securityholders' Lists..................................36
         SECTION 4.3  Reports by the Company..................................37
         SECTION 4.4  Reports by the Trustee..................................38

ARTICLE 5

         REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
         ON EVENT OF DEFAULT..................................................40
         SECTION 5.1  Event of Default Defined; Acceleration of...............40
         SECTION 5.2  Collection of Indebtedness by Trustee;
                      Trustee May Prove Debt..................................43
         SECTION 5.3  Application of Proceeds.................................46
         SECTION 5.4  Suits for Enforcement...................................47
         SECTION 5.5  Restoration of Rights on Abandonment of
                      Proceedings.............................................48
         SECTION 5.6  Limitations on Suits by Securityholders. ...............48
         SECTION 5.7  Unconditional Rights of Securityholders to
                      Institute Certain Suits.................................49
         SECTION 5.8  Powers and Remedies Cumulative; Delay or
                      Omission Not Waiver of Default..........................49
         SECTION 5.9  Control by Securityholders..............................49
         SECTION 5.10 Waiver of Past Defaults.................................50
         SECTION 5.11 Trustee to Give Notice of Default, But May
                      Withhold in Certain Circumstances.......................50
         SECTION 5.12 Right of Court to Require Filing of
                      Undertaking to Pay Costs................................51

ARTICLE 6

         CONCERNING THE TRUSTEE...............................................51
         SECTION 6.1  Duties and Responsibilities of the Trustee;
                      Prior to Default; During Default........................51
         SECTION 6.2  Certain Rights of the Trustee...........................53
         SECTION 6.3  Trustee Not Responsible for Recitals,
                      Disposition of Securities or Application
                      of Proceeds Thereof.....................................54
         SECTION 6.4  Trustee and Agents May Hold Securities;
                      Collections, etc........................................55
         SECTION 6.5  Moneys Held by Trustee..................................55

                                       ii
<PAGE>

                                                                            Page
                                                                            ----

         SECTION 6.6  Compensation and Indemnification of
                      Trustee and Its Prior Claim.............................55
         SECTION 6.7  Right of Trustee to Rely on Officer's
                      Certificate, etc........................................56
         SECTION 6.8  Qualification of Trustee; Conflicting
                      Interests...............................................56
         SECTION 6.9  Persons Eligible for Appointment as Trustee.............63
         SECTION 6.10 Resignation and Removal; Appointment of
                      Successor Trustee.......................................63
         SECTION 6.11 Acceptance of Appointment by
                      Successor Trustee.......................................65
         SECTION 6.12 Merger, Conversion, Consolidation or
                      Succession to Business of Trustee.......................66
         SECTION 6.13 Preferential Collection of Claims Against
                      the Company.............................................67
         SECTION 6.14 Appointment of Authenticating Agent.....................71

ARTICLE 7

         CONCERNING THE SECURITYHOLDERS.......................................73
         SECTION 7.1  Evidence of Action Taken by Securityholders.............73
         SECTION 7.2  Proof of Execution of Instruments.......................74
         SECTION 7.3  Holders to Be Treated as Owners.........................74
         SECTION 7.4  Securities Owned by Company Deemed Not
                      Outstanding.............................................74
         SECTION 7.5  Right of Revocation of Action Taken.....................75

ARTICLE 8

         SUPPLEMENTAL INDENTURES..............................................76
         SECTION 8.1  Supplemental Indentures Without
                      Consent of Securityholders..............................76
         SECTION 8.2  Supplemental Indentures With Consent of
                      Securityholders.........................................77
         SECTION 8.3  Effect of Supplemental Indenture........................78
         SECTION 8.4  Documents to Be Given to Trustee........................78
         SECTION 8.5  Notation on Securities in Respect of
                      Supplemental Indentures.................................79

ARTICLE 9

         CONSOLIDATION, MERGER, SALE OR CONVEYANCE............................79
         SECTION 9.1  Company May Consolidate, etc., on
                      Certain Terms...........................................79
         SECTION 9.2  Successor Corporation Substituted.......................79
         SECTION 9.3  Opinion of Counsel to Trustee...........................80

                                       iii
<PAGE>

                                                                            Page
                                                                            ----
ARTICLE 10

         SATISFACTION AND DISCHARGE OF INDENTURE;
         UNCLAIMED MONEYS.....................................................81
         SECTION 10.1 Satisfaction and Discharge of Indenture.................81
         SECTION 10.2 Application by Trustee of Funds Deposited
                      for Payment of Securities...............................84
         SECTION 10.3 Repayment of Moneys Held by Paying Agent................84
         SECTION 10.4 Return of Unclaimed Moneys Held by Trustee
                      and Paying Agent........................................84
         SECTION 10.5 Reinstatement of Company's Obligations..................85

ARTICLE 11

         MISCELLANEOUS PROVISIONS.............................................85
         SECTION 11.1 Incorporators, Stockholders, Officers and
                      Directors of Company Exempt from Individual
                      Liability...............................................85
         SECTION 11.2 Provisions of Indenture for the Sole
                      Benefit of Parties and Securityholders..................85
         SECTION 11.3 Successors and Assigns of Company
                      Bound by Indenture......................................86
         SECTION 11.4 Notices and Demands on Company, Trustee
                      and Securityholders.....................................86
         SECTION 11.5 Officer's Certificates and Opinions of
                      Counsel; Statements to Be Contained
                      Therein.................................................87
         SECTION 11.6 Payments Due on Saturdays, Sundays and
                      Holidays................................................88
         SECTION 11.7 Conflict of Any Provision of Indenture
                      with Trust Indenture Act of 1939........................88
         SECTION 11.8 New York Law to Govern..................................89
         SECTION 11.9 Counterparts............................................89
         SECTION 11.10 Effect of Headings.....................................89
         SECTION 11.11 Determination of Principal Amount......................89

ARTICLE 12

         REDEMPTION OF SECURITIES AND SINKING FUNDS...........................89
         SECTION 12.1 Applicability of Article................................89
         SECTION 12.2 Notice of Redemption; Partial Redemptions...............89
         SECTION 12.3 Payment of Securities Called for
                      Redemption..............................................91
         SECTION 12.4 Exclusion of Certain Securities from
                      Eligibility for Selection for Redemption................92
         SECTION 12.5 Mandatory and Optional Sinking Funds....................92

                                       iv
<PAGE>

            THIS INDENTURE, dated as of , __, 1998 between ENHANCE FINANCIAL
SERVICES GROUP INC., a New York corporation (the "Company"), and BankOne Trust
Company, NA, a national banking association, as Trustee (the "Trustee"),

                              W I T N E S S E T H:
                               -------------------

            WHEREAS, the Company has duly authorized the issue from time to time
of its unsecured debentures, notes or other evidences of indebtedness to be
issued in one or more Series (the "Securities") up to such principal amount or
amounts as may from time to time be authorized in accordance with the terms of
this Indenture and to provide, among other things, for the authentication,
delivery and administration thereof, the Company has duly authorized the
execution and delivery of this Indenture; and

            WHEREAS, all things necessary to make this Indenture a valid
indenture and agreement according to its terms have been done;

            NOW, THEREFORE:

            In consideration of the premises and the purchases of the Securities
by the holders thereof, the Company and the Trustee mutually covenant and agree
for the equal and proportionate benefit of the respective holders from time to
time of the Securities as follows:

                                    ARTICLE 1

                                   DEFINITIONS

            SECTION 1.1 CERTAIN TERMS DEFINED. The following terms (except as
otherwise expressly provided or unless the context otherwise clearly requires)
for all purposes of this Indenture and of any indenture supplemental hereto
shall have the respective meanings specified in this Section. All other terms
used in this Indenture that are defined in the Trust Indenture Act of 1939 or
the definitions of which in the Securities Act of 1933 are referred to in the
Trust Indenture Act of 1939, including terms defined therein by reference to the
Securities Act of 1933 (except as herein otherwise expressly provided or unless
the context otherwise clearly requires), shall have the meanings assigned to
such terms in said Trust Indenture Act and
<PAGE>

in said Securities Act as in force at the date of this Indenture. All accounting
terms used herein and not expressly defined shall have the meanings assigned to
such terms in accordance with generally accepted accounting principles, and the
term "generally accepted accounting principles" means such accounting principles
as are generally accepted in the United States at the time of any computation.
The words "herein," "hereof" and "hereunder" and other words of similar import
refer to this Indenture as a whole, as supplemented and amended from time to
time, and not to any particular Article, Section or other subdivision. The terms
defined in this Article have the meanings assigned to them in this Article and
include the plural as well as the singular.

            "Authenticating Agent" means any Person authorized by the Trustee
pursuant to Section 6.14 to act on behalf of the Trustee to authenticate
Securities of one or more Series.

            "Board of Directors" means either the Board of Directors of the
Company or the Executive Committee or other committee of such Board duly
authorized to act hereunder.

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

            "Business Day" means, except as may otherwise be provided in the
form of Securities of any particular Series, with respect to any Place of
Payment, any day, other than a Saturday or Sunday, that is not a legal holiday,
or a day on which banking institutions are authorized or required by law or
regulation to close in The City of New York or in that Place of Payment, or with
respect to Securities denominated in a Foreign Currency, the capital city of the
country of such Foreign Currency, or with respect to Securities denominated in
ECU, Brussels, Belgium.

            "CEDEL S.A." means Central de Liaison de Valeurs Mobilieres S.A.

            "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under the Securities Exchange Act of 1934, or
if at any time after the execution and delivery of this Indenture such
Commission is not existing and performing the duties now assigned to it under
the Trust Indenture Act of 1939, then the body performing such duties on such
date.

                                        2
<PAGE>

            "Company" means Enhance Financial Services Group Inc., a New York
corporation, and, subject to Article Nine, its successors and assigns.

            "Company Notice" means the confirmation of the Company, transmitted
by telex, telecopy or in writing to the Trustee of the terms of the issuance of
any Securities issuable in Tranches.

            "Company Order" or "Company Request" means a written order or
request of the Company, signed in its name by its President and Chief Financial
Officer or Treasurer.

            "Corporate Trust Office" means the office of the Trustee at which
the corporate trust business of the Trustee shall, at any particular time, be
administered, which office is, at the date as of which this Indenture is dated,
located at 153 West 51st Street, New York, New York 10019, Attention:
Corporate Trust Administration.

            "Coupon" means any interest coupon appertaining to any Security.

            "Coupon Security" means any Security authenticated and delivered
with one or more Coupons appertaining thereto.

            "Depository" means, unless otherwise specified by the Company
pursuant to Section 2.3, with respect to Securities of any series issuable or
issued as a Global Security, The Depository Trust Company, New York, New York,
or any successor thereto registered as a clearing agency pursuant to the
provisions of Section 17A of the Securities Exchange Act of 1934, as amended, or
other applicable statute or regulation.

            "Dollar" means the coin or currency of the United States which as of
the time of payment is legal tender for the payment of public and private debts.

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

            "Euro-clear" means Morgan Guaranty Trust Company of New York,
Brussels office, as operator of the Euro-clear System.

            "Event of Default" means any event or condition specified as such in
Section 5.1.

            "Foreign Currency" means a currency issued by the government of any
country other than the United States.

                                        3
<PAGE>

            "Global Security," when used with respect to any series of
Securities issued hereunder, means a Security which is executed by the Company
and authenticated and delivered by the Trustee to the Depository pursuant to the
Depository's instruction, all in accordance with this Indenture and an indenture
supplemental hereto, if any, or Board Resolution and pursuant to a Company
Order, which Global Security shall be registered in the name of the Depository
or its nominee and which shall represent, and shall be denominated in an amount
equal to the aggregate principal amount of, all of the Outstanding Securities of
such series or any portion thereof, in either case having the same terms,
including, without limitation, the same original issue date, date or dates on
which principal is due, and interest rate or method of determining interest.

            "Holder," "Holder of Securities," "Securityholder" or other similar
terms mean the bearer of an Unregistered Security or a Registered Holder of a
Registered Security and, when used with respect to any Coupon, means the bearer
thereof.

            "Indenture" means this instrument as originally executed and
delivered or, if amended or supplemented as herein provided, as so amended or
supplemented or both, and shall include the forms and terms of particular Series
of Securities established as contemplated hereunder.

            "Officer's Certificate" means a certificate signed by the President
and the Chief Financial Officer or the Treasurer of the Company and delivered to
the Trustee. Each such certificate shall include the statements provided for in
Section 11.5.

            "Opinion of Counsel" means an opinion in writing signed by legal
counsel who may be an employee of or counsel to the Company. Each such opinion
shall include the statements provided for in Section 11.5.

            "Original Issue Date" of any Security (or portion thereof) means the
earlier of (a) the date of such Security or (b) the date of any Security (or
portion thereof) for which such Security was issued (directly or indirectly) on
registration of transfer, exchange or substitution.

            "Original Issue Discount Security" means any Security which provides
for an amount less than the stated principal amount thereof to be due and
payable upon declaration of acceleration of the maturity thereof pursuant to
Section 5.1.

            "Outstanding" (except as otherwise provided in Section 6.8), when
used with reference to Securities, shall, subject to

                                        4
<PAGE>

the provisions of Section 7.4, mean, as of any particular time, all Securities
authenticated and delivered by the Trustee under this Indenture, except:

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

                  (b) Securities, or portions thereof, for the payment or
      redemption of which moneys in the necessary amount shall have been
      deposited in trust with the Trustee or with any Paying Agent (other than
      the Company) or shall have been set aside, segregated and held in trust by
      the Company for the holders of such Securities (if the Company shall act
      as its own Paying Agent), provided that if such Securities, or portions
      thereof, are to be redeemed prior to the maturity thereof, notice of such
      redemption shall have been given as herein provided, or provision
      satisfactory to the Trustee shall have been made for giving such notice;
      and

                  (c) Securities in substitution for which other Securities
      shall have been authenticated and delivered, or which shall have been
      paid, pursuant to the terms of Section 2.9 (except with respect to any
      such Security as to which proof satisfactory to the Trustee is presented
      that such Security is held by a person in whose hands such Security is a
      legal, valid and binding obligation of the Company).

            "Paying Agent" means any Person (which may include the Company)
authorized by the Company to pay the principal of or interest, if any, on any
Security on behalf of the Company.

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

            "Place of Payment" when used with respect to the Securities of any
Series, means the place or places where the principal of and interest, if any,
on the Securities of that Series are payable as specified pursuant to Section
3.2.

            "principal" whenever used with reference to the Securities or any
Security or any portion thereof, shall be deemed to include "and premium, if
any."

            "Redemption Price" or "redemption price" means the price at which
the Securities of any Series shall or may be redeemed in accordance with the
terms of such Securities, as

                                        5
<PAGE>

provided in the Board Resolution or in any indenture supplemental hereto
establishing such Series as contemplated by Section 2.3.

            "Registered Holder" when used with respect to a Registered Security
means the person in whose name such Security is registered in the Security
register.

            "Registered Security" means any Security registered in the Security
register.

            "Responsible Officer" when used with respect to the Trustee shall
mean any officer in the Corporate Trust Services Division of the Trustee or any
other officer of the Trustee to whom any corporate trust matter is referred
because of his or her knowledge of and familiarity with the particular subject.

            "Security" or "Securities" (except as otherwise provided in Section
6.8) has the meaning stated in the first recital of this Indenture, or, as the
case may be, Securities that have been authenticated and delivered under this
Indenture.

            "Series" or "Series of Securities" means a series of Securities.
Except in Sections 1.1 - "Outstanding," 2.3 and 7.4 and Articles Five and Six,
the terms "Series" or "Series of Securities" shall also mean a Tranche in the
event that the applicable Series may be issued in separate Tranches.

            "Stated Maturity," when used with respect to any Security of any
Series, means the date specified in such Security as the fixed date on which an
amount equal to the principal amount at maturity of such Security is due and
payable, as provided in the Board Resolution or in any indenture supplemental
hereto establishing such Series as contemplated by Section 2.3.

            "Subsidiary" means any corporation, of which at least a majority of
the Voting Stock is at the time owned directly or indirectly by the Company or
by the Company and its other Subsidiaries.

            "Tranche" means all Securities of the same Series which have the
same issue date, maturity date and other terms.

            "Trustee" means the Person identified as "Trustee" in the first
paragraph hereof and, subject to the provisions of Article Six, any successor
trustee.

            "Trust Indenture Act of 1939" (except as otherwise provided in
Sections 8.1 and 8.2) means the Trust Indenture Act

                                        6
<PAGE>

of 1939 as in force at the date as of which this Indenture was originally
executed.

            "United States" means the United States of America (including the
States and the District of Columbia), its territories, its possessions and other
areas subject to its jurisdiction.

            "United States Alien" means any Person who, for United States
Federal income tax purposes, is a foreign corporation, a non-resident alien
individual, a non-resident alien fiduciary of a foreign estate or trust, or a
foreign partnership one or more of the members of which is, for United States
Federal income tax purposes, a foreign corporation, a non-resident alien
individual or a non-resident alien fiduciary of a foreign estate or trust.

            "Unregistered Security" means any Security not registered as to
principal.

            "vice president" when used with respect to the Company 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 of "vice president."

            "Voting Stock" means outstanding shares of stock having voting power
for the election of directors, whether at all times or only so long as no senior
class of stock has such voting power because of default in dividends or some
other default.

            "Yield to Maturity" means the yield to maturity on a series of
Securities, calculated at the time of issuance of such series, or, if
applicable, at the most recent redetermination of interest on such series, and
calculated by the Company in accordance with accepted financial practice.

                                    ARTICLE 2

                                   SECURITIES

            SECTION 2.1 FORMS GENERALLY. The Securities of each Series
(including any temporary or permanent global Securities) and the Coupons, if
any, shall be substantially in such form (not inconsistent with this Indenture)
as shall be established by or pursuant to a Board Resolution (or, to the extent
established pursuant to, rather than set forth in, such Board Resolution, in an
Officer's Certificate) or in one or more indentures supplemental hereto, in each
case with such appropriate insertions, omissions, substitutions and other
variations as are

                                        7
<PAGE>

required or permitted by this Indenture (the provisions of which shall be
appropriate to reflect the terms of each Series of Securities, including the
currency or denomination, which may be Dollars, Foreign Currency or ECU) and may
have imprinted or otherwise reproduced thereon such legend or legends, not
inconsistent with the provisions of this Indenture, as may be required to comply
with any law or with any rules or regulations pursuant thereto, or with any
rules of any securities exchange or to conform to general usage, all as may be
determined by the officers executing such Securities and Coupons, if any, as
evidenced by their execution of the Securities and Coupons, if any.

            The definitive Securities and Coupons, if any, 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 and
Coupons, if any, as evidenced by their execution of such Securities and Coupons,
if any.

            SECTION 2.2 FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION. The
Trustee's certificate of authentication on all Securities shall be in
substantially the following form:

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

                      BankOne Trust Company, NA, as Trustee

                      By ________________________________
                               Authorized Officer"

            SECTION 2.3 AMOUNT UNLIMITED; ISSUABLE IN SERIES. The aggregate
principal amount of Securities which may be authenticated and delivered under
this Indenture is unlimited.

            The Securities may be issued in one or more Series. There shall be
established in or pursuant to a Board Resolution, or to the extent established
pursuant to, rather than set forth in, such resolution, established in an
Officer's Certificate, or established in one or more indentures supplemental
hereto, prior to the issuance of Securities of any Series:

            (1) the title of the Securities of the Series (which title shall
      distinguish the Securities of the Series from all other Securities issued
      by the Company);

                                        8
<PAGE>

            (2) any limit upon the aggregate principal amount of the Securities
      of the Series that may be authenticated and delivered under this Indenture
      (except for Securities authenticated and delivered upon registration of
      transfer of, or in exchange for, or in lieu of, other Securities of the
      Series pursuant to Section 2.8, 2.9, 2.11 or 12.3);

            (3) whether Securities of the Series are to be issuable as
      Registered Securities, Unregistered Securities or both, whether the
      securities of such Series are to be uncertificated and whether any
      Securities of the Series are to be issuable initially in temporary global
      form and whether any Securities of the Series are to be issuable in
      permanent global form with or without coupons and, if so, (i) whether
      beneficial owners of interest in any such permanent global Security may
      exchange such interest for Securities of such Series and of like tenor of
      any authorized form and denomination and the circumstances under which any
      such exchanges may occur, if other than in the manner provided in Section
      2.8 and (ii) the name of the depositary with respect to any global
      Security;

            (4) the Person to whom any interest in any Registered Security of
      the Series shall be payable, if other than the Person in whose name the
      Security (or one or more predecessor Securities) is registered at the
      close of business on the record date for such interest, the manner in
      which, or the Person to whom, any interest on any Unregistered Security of
      the Series shall be payable, if otherwise than upon presentation and
      surrender of the Coupons appertaining thereto as they severally mature,
      and the extent to which, or the manner in which, any interest payable on a
      temporary global Security on an interest payment date will be paid if
      other than in the manner provided in Section 2.11;

            (5) the date or dates on which the principal of the Securities of
      the Series is payable;

            (6) the rate or rates (or formula for determining such rates) at
      which the Securities of the Series shall bear interest, if any, the date
      or dates from which such interest shall accrue, the interest payment dates
      on which such interest shall be payable and the record dates for the
      determination of Holders to whom interest is payable;

            (7) whether the interest rate or interest rate formula, as the case
      may be, for Securities of the Series may be reset at the option of the
      Company and, if so, the

                                        9
<PAGE>

      date or dates on which such interest rate or interest rate formula, as
      the case may be, may be reset;

            (8) the place or places where the principal and interest on
      Securities of the Series shall be payable (if other than as provided in
      Section 3.2), any Registered Securities of the Series may be surrendered
      for registration of transfer, Securities of the Series may be surrendered
      for exchange and notices and demands to or upon the Company in respect of
      the Securities of the Series and this Indenture may be served;

            (9) the price or prices at which, the period or periods within which
      and the terms and conditions upon which Securities of the Series may be
      redeemed or repurchased, in whole or in part, at the option of the Company
      or repaid at the option of the Holders;

            (10) the obligation, if any, of the Company to redeem, purchase or
      repay Securities of the Series pursuant to any sinking fund or analogous
      provisions or at the option of a Holder thereof and the price or prices at
      which and the period or periods within which and the terms and conditions
      upon which Securities of the Series shall be redeemed, purchased or
      repaid, in whole or in part, pursuant to such obligation;

            (11) the denominations in which any Registered Securities of the
      Series may be issued, if other than denominations of $1,000 and any
      integral multiple thereof, and the denomination or denominations in which
      any Unregistered Securities of the Series may be issued, if other than the
      denomination of $5,000;

            (12) the form of the Securities (or forms thereof if Unregistered
      and Registered Securities shall be issuable in such Series), including
      such legends as required by law or as the Company deems necessary or
      appropriate, the form of any Coupons or temporary global Security which
      may be issued and the forms of any certificates which may be required
      hereunder or which the Company may require in connection with the
      offering, sale, delivery or exchange of Unregistered Securities;

            (13) the currencies or currencies, including composite currencies,
      in which payments of interest or principal are payable with respect to the
      Securities of the Series if other than the currency of the United States;

                                       10
<PAGE>

            (14) if the amount of payments of principal of or interest on the
      Securities of any Series may be determined with reference to the
      differences in the price of or rate of exchange between any indexes,
      currencies or commodities, the manner in which such amounts shall be
      determined;

            (15) if other than the principal amount thereof, the portion of the
      principal amount of Securities of the Series which shall be payable upon
      acceleration of the maturity thereof pursuant to Section 5.1 or provable
      in bankruptcy pursuant to Section 5.2;

            (16) whether Securities of the Series are issuable in Tranches;

            (17) any additional events of default or restrictive covenants with
      respect to the Securities of such Series which are not set forth herein,
      and whether any such additional events of default or restrictive covenants
      are subject to defeasance in accordance with Section 3.8;

            (18) any other terms or conditions upon which the Securities of the
      Series are to be issued (which terms shall not be inconsistent with the
      provisions of this Indenture); and

            (19) any trustees, authenticating or paying agents, transfer agents
      or registrars or any other agents with respect to the Securities of such
      Series.

            All Securities of any one Series shall be substantially identical
except as to denomination, except as provided in the immediately succeeding
paragraph, and except as may otherwise be provided in or pursuant to such Board
Resolution or Officer's Certificate or in any such indenture supplemental
hereto. All Securities of any one Series need not be issued at the same time,
and unless otherwise provided, a Series may be reopened for issuances of
additional Securities of such Series.

            Each Series may be issued in one or more Tranches. Except as
provided in the foregoing paragraph, all Securities of a Tranche shall have the
same terms, including issue date, except that Securities of the same Tranche may
be issued in different denominations of the same currency or composite currency.

            SECTION 2.4 AUTHENTICATION AND DELIVERY OF SECURITIES. At any time
and from time to time after the execution and delivery of this Indenture, the
Company may deliver Securities of any Series having attached thereto appropriate

                                       11
<PAGE>

Coupons, if any, executed by the Company to the Trustee for authentication,
together with a Company Order for the authentication and delivery of such
Securities, and the Trustee in accordance with the Company Order shall
authenticate and deliver such Securities; provided, however, that in connection
with its original issuance, no Unregistered Security shall be mailed or
otherwise delivered to any location in the United States; and provided, further,
that an Unregistered Security may be delivered in connection with its original
issuance only if the Person entitled to receive such Unregistered Security shall
have furnished a certificate in the form of Exhibit A-1 hereto dated no earlier
than 15 days prior to the earlier of the date on which such Unregistered
Security is delivered and the date on which any temporary Security first becomes
exchangeable for such Unregistered Security in accordance with the terms of such
temporary Security and this Indenture. If any Security shall be represented by a
permanent global Unregistered Security, then, for purposes of this Section and
Section 2.11, the notation of a beneficial owner's interest therein upon
original issuance of such Security or upon exchange of a portion of a temporary
global Security shall be deemed to be delivered in connection with its original
issuance of such beneficial owner's interest in such permanent global
Unregistered Security. In authenticating such Securities and accepting the
additional responsibilities under this Indenture in relation to such Securities,
the Trustee shall be entitled to receive and (subject to Section 6.1) shall be
fully protected in relying upon:

            (1) a Company Order requesting such authentication and setting forth
      delivery instructions if the Securities are not to be delivered to the
      Company;

            (2) any Board Resolution, Officer's Certificate or supplemental
      indenture referred to in Sections 2.1 and 2.3 by or pursuant to which the
      forms of the Securities of any such Series were established;

            (3) an Officer's Certificate setting forth the form and terms of the
      Securities stating that the form and terms of the Securities have been
      established pursuant to Sections 2.1 and 2.3 and comply with this
      Indenture, and covering such other matters as the Trustee may reasonably
      request;

            (4) an Opinion of Counsel to the effect that:

                  (a) the form or forms and terms of such Securities have been
            established pursuant to Sections 2.1 and 2.3 and comply with this
            Indenture;

                                       12
<PAGE>

                  (b) the authentication and delivery of such Securities by the
            Trustee are authorized under the provisions of this Indenture;

                  (c) 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 binding obligations of the Company;

                  (d) all laws and requirements in respect of the execution and
            delivery by the Company have been complied with; and

                  (e) covering such other matters as the Trustee may reasonably
            request;

provided, however, that in the case of any Series issuable in Tranches, if the
Trustee has previously received the documents referred to in Section 2.4(l)-(4)
with respect to any Tranche of such Series, the Trustee shall authenticate and
deliver Securities of such Series executed and delivered by the Company for
original issuance upon receipt by the Trustee of the applicable Company Notice.

            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 by the Company or
if the issue of such Securities pursuant to this Indenture will affect the
Trustee's own rights, duties or immunities under this Indenture in a manner not
reasonably acceptable to the Trustee.

            SECTION 2.5 EXECUTION OF SECURITIES. The Securities shall be signed
on behalf of the Company by the Chairman of its Board of Directors or its
president or any vice president or its treasurer or any assistant treasurer,
under its corporate seal which may, but need not, be attested. Such signatures
may be the manual or facsimile signatures of the present or any future such
officers. The seal of the Company may be in the form of a facsimile thereof and
may be impressed, affixed, imprinted or otherwise reproduced on the Securities.
Typographical and other minor errors or defects in any such reproduction of the
seal or any such signature shall not affect the validity or enforceability of
any Security that has been duly authenticated and delivered by the Trustee. Any
Coupons attached to any Unregistered Security shall be executed on behalf of the
Company by the manual or facsimile signature of any such officer of the Company.

                                       13
<PAGE>

            In case any officer of the Company who shall have signed any of the
Securities or Coupons shall cease to be such officer before the Security or
Coupon so signed shall be authenticated and delivered by the Trustee or disposed
of by the Company, such Security or Coupon nevertheless may be authenticated and
delivered or disposed of as though the person who signed such Security or Coupon
had not ceased to be such officer of the Company; and any Security or Coupon may
be signed on behalf of the Company by such persons as, at the actual date of the
execution of such Security or Coupon, shall be the proper officers of the
Company, although at the date of the execution and delivery of this Indenture
any such person was not such an officer.

            SECTION 2.6 CERTIFICATE OF AUTHENTICATION. Only such Securities and
Coupons appertaining thereto as shall bear thereon a certificate of
authentication substantially in the form hereinbefore recited, executed by the
Trustee by the manual signature of one of its authorized officers, shall be
entitled to the benefits of this Indenture or be valid or obligatory for any
purpose. Such certificate by the Trustee upon any Security executed by the
Company shall be conclusive evidence that the Security so authenticated has been
duly authenticated and delivered hereunder and that the Holder is entitled to
the benefits of this Indenture.

            The Trustee shall not authenticate or deliver any Unregistered
Security until any matured Coupons appertaining thereto have been detached and
canceled, except as otherwise provided or permitted by this Indenture.

            SECTION 2.7 DENOMINATION AND DATE OF SECURITIES; PAYMENTS OF
INTEREST. The Securities shall be issuable in denominations as shall be
specified as contemplated by Section 2.3. In the absence of any such
specification with respect to the Securities of any Series, Registered
Securities of such Series shall be issuable in denominations of $1,000 and any
multiple thereof, and Unregistered Securities of such Series shall be issuable
in denominations of $5,000, and interest shall be computed on the basis of a
360-day year of twelve 30-day months. The Securities shall be numbered, lettered
or otherwise distinguished in such manner or in accordance with such plan as the
officers of the Company executing the same may determine with the approval of
the Trustee as evidenced by the execution and authentication thereof.

            Each Registered Security shall be dated the date of its
authentication, each Unregistered Security shall be dated as of the date of
original issuance of the first Security of such

                                       14
<PAGE>

Series to be issued, shall bear interest from the date and shall be payable on
the dates, in each case, which shall be specified as contemplated by Section
2.3.

            Interest on any Security which is payable, and is punctually paid or
duly provided for, on any interest payment date shall be paid, in the case of
Registered Securities, 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 the payment of such interest and, in the case of Unregistered
Securities, upon surrender of the Coupon appertaining thereto in respect of the
interest due on such interest payment date. At the option of the Company,
payment of interest on any Registered Security may be made, subject to Section
3.2, by check mailed to the Registered Holder's address as shown on the Security
register.

            The term "record date" as used with respect to any interest payment
date (except for a date for payment of defaulted interest) shall mean the date
specified as such in the terms of the Securities of any particular Series, or,
if no such date is so specified, if such interest payment date is the first day
of a calendar month, the close of business on the fifteenth day of the next
preceding calendar month or, if such interest payment date is the fifteenth day
of a calendar month, the close of business on the first day of such calendar
month, whether or not such record date is a Business Day.

            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 (called
"defaulted interest" for the purpose of this Section) shall forthwith cease to
be payable to the Registered Holder on the relevant regular record date by
virtue of his 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
clause (2) below:

            (1) The Company may elect to make payment of any defaulted interest
      to the persons in whose names any such Registered Securities (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. At least 20 days prior to the date
      of a proposed payment of defaulted interest, 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

                                       15
<PAGE>

      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 in respect
      of Registered Securities of such Series which shall be not more than 15
      nor less than 10 days prior to the date of the proposed payment and not
      less than 10 days after 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 thereof to be mailed, first class postage prepaid,
      to each Registered Holder at his address as it appears in the Security
      register, not less than 10 days prior to such special record date. Notice
      of the proposed payment of such defaulted interest and the special record
      date therefor having been mailed as aforesaid, such defaulted interest in
      respect of Registered Securities of such Series shall be paid to the
      person in whose names such Securities (or their respective predecessor
      Securities) are registered on such special record date and such defaulted
      interest 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 the Securities of
      that Series may be listed, and upon such notice as may be required by such
      exchange, if, after notice given by the Company to the Trustee if the
      proposed payment pursuant to this clause, such payment shall be deemed
      practicable by the Trustee.

            Any defaulted interest payable in respect of any Security of any
Series which is not a Registered Security shall be payable pursuant to such
procedures as may be satisfactory to the Trustee in such manner that there is no
discrimination as between the Holders of Registered Securities and other
Securities of the same Series, and notice of the payment date therefor shall be
given by the Trustee, in the name and at the expense of the Company, in the
manner specified in Section 11.4.

            Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon transfer of or in exchange for or in lieu of
any other Security shall carry the

                                       16
<PAGE>

rights to interest accrued and unpaid, and to accrue, which were carried by such
other Security.

            SECTION 2.8 REGISTRATION, TRANSFER AND EXCHANGE. The Company will
keep at each office or agency to be maintained for the purpose as provided in
Section 3.2 for each Series of Securities a register or registers in which,
subject to such reasonable regulations as it may prescribe, it will register,
and will register the transfer of, Registered Securities as in this Article
provided. Such register shall be in written form in the English language or in
any other form capable of being converted into such form within a reasonable
time. At all reasonable times such register or registers shall be open for
inspection by the Trustee.

            Upon due presentation for registration of transfer of any Registered
Security of any Series at any such office or agency to be maintained for these
purpose as provided in Section 3.2, the Company shall execute and the Trustee
shall authenticate and deliver in the name of the transferee or transferees a
new Registered Security or Registered Securities of the same Series in
authorized denominations for a like aggregate principal amount.

            At the option of the Holder, Registered Securities of any Series may
be exchanged for other Registered Securities of the same Series of any
authorized denominations and of a like aggregate principal amount and tenor,
upon surrender of the Securities to be exchanged at any 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. Except as otherwise
specified as contemplated by Section 2.3, Unregistered Securities may not be
issued in exchange for Registered Securities.

            At the option of the Holder, Unregistered Securities of any Series
may be exchanged or Registered Securities of the same Series of any authorized
denominations and of a like aggregate principal amount and tenor, upon surrender
of the Unregistered Securities to be exchanged at any such office or agency,
with all unmatured coupons, if any, and all matured coupons, if any, in default
thereto appertaining. If the Holder of an Unregistered Security is unable to
produce any such unmatured coupons and all matured coupon or coupons or matured
coupon or coupons in default, such exchange may be effected if the Unregistered
Securities are accompanied by payment in funds acceptable to the Company in an
amount equal to the face amount of such missing coupon or coupons, or the
surrender of such missing coupon or

                                       17
<PAGE>

coupons may be waived by the Company and the Trustee if there is furnished to
them such security or indemnity as they may require to save each of them and any
Paying Agent harmless. If thereafter the Holder of such Security shall surrender
to any Paying Agent any such missing coupon in respect of which such a payment
shall have been made, such Holder shall be entitled to receive the amount of
such payment; provided, however, that, except as otherwise provided in Section
3.2, interest represented by coupons shall be payable only upon presentation and
surrender of those coupons at an office or agency located outside the United
States. Notwithstanding the foregoing, in case an Unregistered Security of any
Series is surrendered at any such office or agency in exchange for a Registered
Security of the same Series and like tenor after the close of business at such
office or agency on any record date and before the opening of business at such
office or agency on the relevant interest payment date, such Unregistered
Security shall be surrendered without the coupon relating to such interest
payment date and interest will not be payable on such interest payment date in
respect of the Registered Security issued in exchange for such Unregistered
Security, but will be payable only to the Holder of such coupon when due in
accordance with the provisions of this Indenture.

            Notwithstanding the foregoing, except as otherwise specified as
contemplated by Section 2.3, any permanent global Security shall be exchangeable
only as provided in this paragraph. If the beneficial owners of interests in a
permanent global Security are entitled to exchange such interests for Securities
of such Series and of like tenor and principal amount of another authorized form
and denomination, as specified as contemplated by Section 2.3, then without
unnecessary delay but in any event not later than the earliest date on which
such interests may be so exchanged, the Company shall deliver to the Trustee
definitive Securities of that Series in aggregate principal amount equal to the
principal amount of such permanent global Security, executed by the Company. On
or after the earliest date on which such interests may be so exchanged, such
permanent global Securities shall be surrendered from time to time by the
depositary holding such global Security and in accordance with instructions
given to the Trustee and such depositary (which instructions shall be in writing
but need not comply with Section 11.5 or be accompanied by an Opinion of
Counsel), as shall be specified in the Company Order with respect to the
Trustee, as the Company's agent for such purpose, to be exchanged, in whole or
in part, for definitive Securities of the same Series without charge. The
Trustee shall authenticate and make available for delivery, in exchange for each
portion of such surrendered permanent global Security, a like aggregate
principal

                                       18
<PAGE>

amount of definitive Securities of the same Series of authorized denominations
and of like tenor as the portion of such permanent global Security to be
exchanged which (unless the Securities of the Series are not issuable both as
Unregistered Securities and as Registered Securities, in which case the
definitive Securities exchanged for the permanent global Security shall be
issuable only in the form in which the Securities are issuable, as specified as
contemplated by Section 2.3) shall be in the form of Unregistered Securities or
Registered Securities, or any combination thereof, as shall be specified by the
beneficial owner thereof; provided, however, that no such exchanges may occur
during a period beginning at the opening of business 15 days before any
selection of Securities of that Series to be redeemed and ending on the relevant
Redemption Date; and provided, further, that no Unregistered Security delivered
in exchange for a portion of a permanent global Security shall be mailed or
otherwise delivered to any location in the United States. Promptly following any
such exchange in part, such permanent global Security shall be returned by the
Trustee to the depositary or such other depositary referred to above in
accordance with the instructions of the Company referred to above. If a
Registered Security is issued in exchange for any portion of a permanent global
Security after the close of business at the office or agency where such exchange
occurs on (i) any Regular Record Date and before the opening of business at such
office or agency on the relevant Interest Payment Date, or (ii) any Special
Record Date and before the opening of business at such office or agency on the
related proposed date for payment of interest or defaulted interest, as the case
may be, will not be payable on such Interest Payment Date or proposed date for
payment, as the case may be, in respect of such Registered Security, but will be
payable on such Interest Payment Date or proposed date for payment, as the case
may be, only to the Person to whom interest in respect of such portion of such
permanent global Security is payable in accordance with the provisions of this
Indenture.

            Upon presentation for registration of any Unregistered Securities of
any Series which by its terms is registrable as to principal, at the office or
agency of the Company to be maintained as provided in Section 3.2, such Security
shall be registered as to principal in the name of the Holder thereof and such
registration shall be noted on such Security. Any Security so registered shall
be transferable on the registry books of the Company upon presentation of such
Security at such office or agency for similar notation thereon, but such
Security may be discharged from registration by being in a like manner
transferred to bearer, whereupon transferability by delivery shall be restored.
Unregistered Securities shall continue to be

                                       19
<PAGE>

subject to successive registrations and discharges from registration at the
option of the Holders thereof.

            Unregistered Securities shall be transferable by delivery, except
while registered as to principal. Registration of any Coupon Security shall not
affect the transferability by delivery of the Coupons appertaining thereto which
shall continue to be payable to bearer and transferable by delivery.

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

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

            No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in connection
with any transfer or exchange of Securities, other than exchanges pursuant to
Section 2.11, 8.5 or 12.3 not involving any transfer.

            The Company shall not be required (i) to issue, register the
transfer of or exchange Securities of any Series during a period beginning at
the opening of 15 business days before any selection of Securities of that
Series to be redeemed and ending at the close of business on (A) if Securities
of the Series are issuable only as Registered Securities, the day of the mailing
of the relevant notice of redemption and (B) if Securities of the Series are
issuable as Unregistered Securities, the day of the first publication of the
relevant notice of redemption or, if Securities of the Series are also issuable
as Registered Securities and there is no publication, the mailing of the
relevant notice of redemption, or (ii) to register the transfer of or exchange
any Registered Security so selected for redemption, in whole or in part, except
the unredeemed portion of any Security being redeemed in part, or (iii) to
exchange any Unregistered Security so selected for redemption except that such
an Unregistered Security may be exchanged for a Registered Security of that
Series and like tenor, provided that such Registered Security shall be
simultaneously surrendered for redemption.

                                       20
<PAGE>

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

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

            SECTION 2.9 MUTILATED, DEFACED, DESTROYED, LOST AND STOLEN
SECURITIES. In case any temporary or definitive Security or Coupon shall become
mutilated, defaced or be destroyed, lost or stolen, the Company in its
discretion may execute, and upon the written request of any officer of the
Company, the Trustee shall authenticate and deliver, a new Security of the same
Series or Coupon, bearing a number not contemporaneously outstanding, in
exchange and substitution for the mutilated or defaced Security or Coupon, or in
lieu of and substitution for the Security or Coupon so destroyed, lost or
stolen. In every case the applicant for a substitute Security or Coupon shall
furnish to the Company and to the Trustee and to any agent of the Company or the
Trustee such security or indemnity as may be required by them to indemnify and
defend and to save each of them harmless and, in every case of destruction, loss
or theft, evidence to their satisfaction of the destruction, loss or theft of
such Security or Coupon and of the ownership thereof.

            Upon the issuance of any substitute Security or Coupon, the Company
may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.
In case any Security or Coupon which has matured or is about to mature or has
been called for redemption in full shall become mutilated or defaced or be
destroyed, lost or stolen, the Company may, instead of issuing a substitute
Security or Coupon, pay or authorize the payment of the same (without surrender
thereof except in the case of a mutilated or defaced Security or Coupon), if the
applicant for such payment shall furnish to the Company and to the Trustee and
any agent of the Company or the Trustee such security or indemnity as any of
them may require to save each of them harmless, and, in every case of
destruction, loss or theft, the applicant shall also furnish to the Company and
the Trustee and any agent of the Company or the Trustee evidence to their

                                       21
<PAGE>

satisfaction of the destruction, loss or theft of such Security or Coupon and of
the ownership thereof.

            Every substitute Security of any Series or Coupon issued pursuant to
the provisions of this Section by virtue of the fact that any such Security or
Coupon is destroyed, lost or stolen shall constitute an additional contractual
obligation of the Company, whether or not the destroyed, lost or stolen Security
or Coupon shall be at any time enforceable by anyone and shall be entitled to
all the benefits of (but shall be subject to all the limitations of rights set
forth in) this Indenture equally and proportionately with any and all other
Securities of such Series or Coupons duly authenticated and delivered hereunder.
All Securities or Coupons shall be held and owned upon the express condition
that, to the extent permitted by the law, the foregoing provisions are exclusive
with respect to the replacement or payment of mutilated, defaced, destroyed,
lost or stolen Securities or Coupons and shall preclude any and all other rights
or remedies notwithstanding any law or statute existing or hereafter enacted to
the contrary with respect to the replacement or payment of negotiable
instruments or other securities without their surrender.

            SECTION 2.10CANCELLATION OF SECURITIES, DESTRUCTION THEREOF. All
Securities surrendered for payment, redemption, registration of transfer or
exchange, or for credit against any payment in respect of a sinking or analogous
fund and all Coupons surrendered for payment or exchange, shall, if surrendered
to the Company or any agent of the Company or the Trustee, be delivered to the
Trustee for cancellation or, if surrendered to the Trustee, shall be cancelled
by it; and no Securities or Coupons shall be issued in lieu thereof, except as
expressly permitted by any of the provisions of this Indenture. The Trustee
shall destroy cancelled Securities and Coupons held by it and, at the Company's
request, deliver a certificate of destruction to the Company. If the Company
shall acquire any of the Securities and Coupons, such acquisition shall not
operate as a redemption or satisfaction of the indebtedness represented by such
Securities and Coupons unless and until the same are delivered to the Trustee
for cancellation.

            SECTION 2.11 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 which are
printed, lithographed, typewritten, mimeographed or otherwise produced, in any
authorized denomination, substantially of the tenor of the definitive Securities
in lieu of which they are issued, in registered form or, if authorized, in
bearer form with one or

                                       22
<PAGE>

more coupons or without coupons, and with such appropriate insertions,
omissions, substitutions and other variations as the officers executing may
determine, as evidenced by their execution of such Securities. In the case of
any Series issuable as Unregistered Securities, such temporary Securities may be
in global form.

            Except in the case of temporary Securities in global form (which
shall be exchanged in accordance with the provisions of the following
paragraphs), if temporary Securities of any Series are issued, the Company will
cause definitive Securities of that Series to be prepared without unreasonable
delay. After the preparation of definitive Securities of such Series, the
temporary Securities of such Series shall be exchangeable for definitive
Securities of such Series upon surrender of the temporary Securities of such
Series at the office or agency of the Company maintained pursuant to Section 3.2
for the purpose of exchanges of Securities of such Series, without charge to the
Holder. Upon surrender for cancellation of any one or more temporary Securities
of any Series (accompanied by any unmatured coupons appertaining thereto) the
Company shall execute and the Trustee shall authenticate and deliver in exchange
therefor a like aggregate principal amount of definitive Securities of the same
Series and of like tenor of authorized denominations; provided, however, that no
definitive Unregistered Security shall be delivered in exchange for a temporary
Registered Security; and provided, further, that a definitive Unregistered
Security shall be delivered in exchange for a temporary Unregistered Security
only in compliance with the conditions set forth in Section 2.4.

            If temporary Securities of any Series are issued in global form, any
such temporary global Security shall, unless otherwise provided therein, be
delivered to the London office of a depositary or common depositary (the "Common
Depositary"), for the benefit of Euro-clear and CEDEL S.A., for credit to the
respective accounts of the beneficial owners of such Securities (or to such
other accounts as they may direct).

            Without unnecessary delay but in any event not later than the date
specified in, or determined pursuant to the terms of, any such temporary global
Security (the "Exchange Date"), the Company shall deliver to the Trustee
definitive Securities, in aggregate principal amount equal to the principal
amount of such temporary global Security, or, if so specified as contemplated by
Section 2.3, a permanent global Security, in either case, executed by the
Company. On or after the Exchange Date, such temporary global Security shall be
surrendered by the Common Depositary to the Trustee, as the Company's agent for
such purpose, to be exchanged, in whole or from time to time in part,

                                       23
<PAGE>

for definitive Securities without charge and the Trustee shall authenticate and
deliver, in exchange for each portion of such temporary global Security, an
equal aggregate principal amount of definitive Securities of the same Series of
authorized denominations and of like tenor as the portion of such temporary
global Security to be exchanged. The definitive Securities to be delivered in
exchange for any such temporary global Security shall be in bearer form,
registered form, permanent global bearer form or permanent global registered
form, or any combination thereof, as specified as contemplated by Section 2.3,
and, if any combination thereof is so specified, as requested by the beneficial
owner thereof; provided, however, that, unless otherwise specified in such
temporary global Security, upon such presentation by the Common Depositary, such
temporary global Security is accompanied by a certificate dated the Exchange
Date or a subsequent date and signed by Euro-clear as to the portion of such
temporary global Security held for its account then to be exchanged and a
certificate dated the Exchange Date or a subsequent date and signed by CEDEL
S.A. as to the portion of such temporary global Security held for its account
then to be exchanged, each in the form set forth in Exhibit A-2 to this
Indenture; and provided, further, that definitive Unregistered Securities shall
be delivered in exchange for a portion of a temporary global Security only in
compliance with the requirements of Section 2.4.

            Unless otherwise specified in such temporary global Security, the
interest of a beneficial owner of Securities of a Series in a temporary global
Security shall be exchanged for definitive Securities of the same Series and of
like tenor following the Exchange Date when the account holder instructs
Euro-clear or CEDEL S.A., as the case may be, to request such exchange on his
behalf and delivers to Euro-clear or CEDEL, S.A., as the case may be, a
certificate in the form set forth in Exhibit A-1 to this Indenture, dated no
earlier than 15 days prior to the Exchange Date. Unless otherwise specified in
such temporary global Security, any such exchange shall be made free of charge
to the beneficial owners of such temporary global Security, except that a Person
receiving definitive Securities must bear the cost of insurance, postage,
transportation and the like in the event that such Person does not take delivery
of such definitive Securities in person at the offices of Euro-clear or CEDEL
S.A. Definitive Securities in bearer form to be delivered on exchange for any
portion of a temporary global Security shall be delivered only outside the
United States.

            Until exchanged in full as hereinabove provided, the temporary
Securities of any Series shall in all respects be entitled to the same benefits
under this Indenture as definitive

                                       24
<PAGE>

Securities of the same Series and of like tenor authenticated and delivered
hereunder, except that, unless otherwise specified as contemplated by Section
2.3, interest payable on a temporary global Security on an Interest Payment Date
for Securities of such Series occurring prior to the applicable Exchange Date
shall be payable to Euro-clear and CEDEL S.A. on such Interest Payment Date upon
delivery by Euro-clear and CEDEL S.A. to the Trustee of a certificate or
certificates in the form set forth in Exhibit A-3 to this Indenture, for credit
without further interest on or after such Interest Payment Date to the
respective accounts of the Persons who are the beneficial owners of such
temporary global Security on such Interest Payment Date and who have each
delivered to Euro-clear and CEDEL S.A., as the case may be, a certificate in the
form set forth in Exhibit A-4 to this Indenture. Any interest so received by
Euro-clear and CEDEL S.A. and not paid as herein provided shall be returned to
the Trustee and then to the Company in accordance with Section 10.4.

            SECTION 2.12 COMPLIANCE WITH CERTAIN LAWS AND REGULATIONS. If any
Unregistered Securities are to be issued in any Series of Securities, the
Company will use reasonable efforts to provide for arrangements and procedures
designed pursuant to then applicable laws and regulations, if any, to ensure
that Unregistered Securities are sold or resold, exchanged, transferred and paid
only in compliance with such laws and regulations and without adverse
consequences to the Company.

            SECTION 2.13 APPOINTMENT OF AGENTS WITH RESPECT TO CERTAIN
CALCULATIONS. The Company may appoint an Agent or Agents with respect to one or
more Series of Securities which Agent or Agents shall be authorized to determine
the rate or rates of interest applicable to the Securities of any Series from
time to time in effect, the amount of principal or premium, if any payable on
the Securities of any Series and the rates of exchange applicable to the
Securities of any Series denominated in a currency other than United States
dollars from time to time in effect, all in accordance with the terms of the
Securities of such Series. Wherever reference is made in this Indenture to any
such calculation by the Trustee, it shall be deemed to refer to the calculation
by such agent or agents. Such agent, upon calculating the amounts so to be
calculated pursuant to the terms of the Securities of any Series shall
communicate promptly in writing the amounts so calculated to the Company and the
Trustee. Absent manifest error, all amounts so calculated shall be binding on
the Company, the Trustee and the Holders of the Securities of such Series.

            Any such agent may resign at any time by giving written notice
thereof to the Company and to the Trustee. The Company

                                       25
<PAGE>

may at any time terminate the agency of any such agent by giving written notice
thereof to such agent and to the Trustee. Upon receiving such a notice of
resignation or upon such a termination, the Company may appoint a successor
agent and shall give notice of such appointment to all Holders of Securities in
the manner provided in Section 11 .4.

            SECTION 2.14SECURITIES ISSUABLE IN THE FORM OF A GLOBAL SECURITY.
(a) If the Company shall establish pursuant to Sections 2.1 and 2.3 that the
Securities of a particular series are to be issued in whole or in part in the
form of one or more Global Securities, then the Company shall execute and the
Trustee or its agent shall, in accordance with Section 2.4 and the Company Order
delivered to the Trustee or its agent thereunder, authenticate and deliver such
Global Security or Global Securities, which (i) shall represent, and shall be
denominated in an amount equal to the aggregate principal amount of, the
Outstanding Securities of such series to be represented by such Global Security
or Global Securities, or such portion thereof as the Company shall specify in a
Company Order, (ii) shall be registered in the name of the Depository for such
Global Security or Global Securities or its nominee, (iii) shall be delivered by
the Trustee or its agent to the Depository or pursuant to the Depository's
instruction and (iv) shall bear a legend substantially to the following effect:
"Unless this certificate is presented by an authorized representative of the
Depository to the Company or its agent for registration of transfer, exchange,
or payment, and any certificate issued is registered in the name of the nominee
of the Depository or in such other name as is requested by an authorized
representative of the Depository (and any payment is made to the nominee of the
Depository or to such other entity as is requested by an authorized
representative of the Depository), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered
owner hereof, the nominee of the Depository, has an interest herein."

            (b) Notwithstanding any other provision of this Section 2.14 or of
Section 2.8, and subject to the provisions of paragraph (c) below, unless the
terms of a Global Security expressly permit such Global Security to be exchanged
in whole or in part for individual certificates representing Securities, a
Global Security may be transferred, in whole but not in part and in the manner
provided in Section 2.8, only to a nominee of the Depository for such Global
Security, or to the Depository, or a successor Depository for such Global
Security selected or approved by the Company, or to a nominee of such successor
Depository.

                                       26
<PAGE>

            (c) (i) If at any time the Depository for a Global Security notifies
the Company that it is unwilling or unable to continue as Depository for such
Global Security or if at any time the Depository for the Global Securities for
such series shall no longer be eligible or in good standing under the Securities
Exchange Act of 1934, as amended, or other applicable statute or regulation, the
Company shall appoint a successor Depository with respect to such Global
Security. If a successor Depository for such Global Security is not appointed by
the Company within 90 days after the Company receives notice or becomes aware of
such ineligibility, the Company will execute, and the Trustee or its agent, upon
receipt of a Company Request for the authentication and delivery of certificates
representing Securities of such series in exchange for such Global Security,
will authenticate and deliver, certificates representing Securities of such
Series of like tenor and terms in an aggregate principal amount equal to the
principal amount of the Global Security in exchange for such Global Security.

                  (ii) The Company may at any time and in its sole discretion
determine that the Securities of any series or portion thereof issued or
issuable in the form of one or more Global Securities shall no longer be
represented by such Global Security or Global Securities. In such event the
Company will execute, and the Trustee, upon receipt of a Company Request for the
authentication and delivery of certificates representing Securities of such
series in exchange in whole or in part for such Global Security, will
authenticate and deliver certificates representing Securities of such series of
like tenor and terms in definitive form in an aggregate principal amount equal
to the principal amount of such Global Security or Global Securities
representing such series or portion thereof in exchange for such Global Security
or Global Securities.

                  (iii) If specified by the Company pursuant to Sections 2.1 and
2.3 with respect to Securities issued or issuable in the form of a Global
Security, the Depository for such Global Security may surrender such Global
Security in exchange in whole or in part for certificates representing
Securities of such series of like tenor and terms in definitive form on such
terms as are acceptable to the Company and such Depository. Thereupon the
Company shall execute, and the Trustee or its agent shall authenticate and
deliver, without a service charge, (1) to each Holder specified by the Security
Registrar or the Depository a certificate or certificates representing
Securities of the same series of like tenor and terms and of any authorized
denomination as requested by such person in an aggregate principal amount equal
to and in exchange for such Holder's beneficial interest as specified by the
Security

                                       27
<PAGE>

Registrar or the Depository in the Global Security; and (2) to such Depository a
new Global Security of like tenor and terms and in an authorized denomination
equal to the difference, if any, between the principal amount of the surrendered
Global Security and the aggregate principal amount of certificates representing
Securities delivered to Holders thereof.

                  (iv) In any exchange provided for in any of the preceding
three paragraphs, the Company will execute and the Trustee or its agent will
authenticate and deliver certificates representing Securities in definitive
registered form in authorized denominations for Securities of the same series or
any integral multiple thereof. Upon the exchange of the entire principal amount
of a Global Security for certificates representing Securities, such Global
Security shall be cancelled by the Trustee or its agent. Except as provided in
the preceding paragraph, certificates representing Securities issued in exchange
for a Global Security pursuant to this Section shall be registered in such names
and in such authorized denominations for Securities of that Series or any
integral multiple thereof, as the Security Registrar or Depository shall
instruct the Trustee or its agent. The Trustee or the Security Registrar shall
deliver at its Corporate Trust Office such certificates representing Securities
to the Holders in whose names such Securities are so registered.

                                    ARTICLE 3

                            COVENANTS OF THE COMPANY

            SECTION 3.1 PAYMENT OF PRINCIPAL 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 interest on, each of
the Securities of such Series in accordance with the terms of the Securities of
such Series, any Coupons appertaining thereto and this Indenture.

            The interest on Unregistered Securities shall be payable only upon
presentation and surrender of the Coupons for such interest installments as are
evidenced thereby as they mature. The interest on any temporary Unregistered
Security shall be paid, as to any installment of interest evidenced by a Coupon
attached thereto, if any, only upon presentation and surrender of such Coupon,
and, as to the other installments of interest, if any, only upon presentation of
such Securities for notation thereon of the payment of such interest.

                                       28
<PAGE>

            SECTION 3.2 OFFICES FOR PAYMENT, ETC. If Securities of a Series are
issuable only as Registered Securities, the Company will maintain 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.
Except as otherwise specified as contemplated by Section 2.3, if Securities of a
Series are issuable as Registered Securities and/or Unregistered Securities, the
Company will maintain (A) in the Borough of Manhattan, The City of New York, an
office or agency where any Registered Securities of that Series may be
surrendered for registration of transfer, where Securities of that Series may be
surrendered for exchange, where notices and demands to or upon the Company in
respect of the Securities of that Series and this Indenture may be served and
where Unregistered Securities of that Series and related coupons may be
presented or surrendered for payment in the circumstances described in the
following paragraph (and not otherwise), (B) subject to any laws or regulations
applicable thereto, outside the United States, an office or agency where
Securities of that Series and related coupons may be presented and surrendered
for payment (including payment of any additional amounts payable on Securities
of that Series pursuant to Section 3.7); provided, however, that if the
Securities of that Series are listed on The International Stock Exchange, the
London Stock Exchange, the Luxembourg Stock Exchange or any other stock exchange
located outside the United States and such stock exchange shall so require, the
Company will maintain a Paying Agent for the Securities of that Series in
London, Luxembourg or any other required city located outside the United States,
as the case may be, so long as the Securities of that Series are listed on such
exchange, and (C) subject to any laws or regulations applicable thereto, outside
the United States, an office or agency where any Registered Securities of that
Series may be surrendered for registration of transfer, where Securities of that
Series may be surrendered for 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 and the
Holders of the location, and any change in the location, of any such office or
agency. If at any time the Company shall fail to maintain any such required
office or agency in respect of any Series of Securities or shall fail to furnish
the Trustee with the address thereof, such presentations and surrenders of
Securities of that Series may be made and notices and demands may be made or
served at the Corporate Trust Office of the Trustee, except that Unregistered
Securities of that Series and the related coupons may be presented and
surrendered for payment (including payment

                                       29
<PAGE>

of any additional amounts payable on Unregistered Securities of that Series
pursuant to Section 3.7) at an office maintained by the Trustee in London, and
the Company hereby appoints the same as its agent to receive such respective
presentations, surrenders, notices and demands.

            Except as otherwise specified as contemplated by Section 2.3, no
payment of principal or interest on Unregistered Securities shall be made at any
office or agency of the Company in the United States or by check mailed to any
address in the United States or by transfer to an account maintained with a bank
located in the United States, provided, however, that, if the Securities of a
Series are denominated and payable in Dollars, payment of principal of and any
premium, if any, and interest on any Unregistered Security (including any
additional amounts payable on Securities of such Series pursuant to Section 3.7)
shall be made at the office of the Company's Paying Agent in the Borough of
Manhattan, The City of New York, if (but only if) payment in Dollars of the full
amount of such principal, premium, interest or additional amounts, as the case
may be, at all offices or agencies outside the United States maintained for the
purpose by the Company in accordance with this Indenture is illegal or effective
precluded by exchange controls or other similar restrictions.

            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 accordance with the requirements set forth above for Securities of
any Series for such purposes. The Company will give prompt written notice to the
Trustee and the Holders of any such designation or rescission and of any change
in the location of any such other office or agency.

            Unless otherwise specified pursuant to Section 2.3, the Trustee is
appointed Paying Agent and Registrar.

            SECTION 3.3 APPOINTMENT TO FILL A VACANCY IN OFFICE OF TRUSTEE. The
Company, whenever necessary to avoid or fill a vacancy in the office of Trustee,
will appoint, in the manner provided in Section 6.10, a Trustee, so that there
shall at all times be a Trustee with respect to each Series of Securities
hereunder.

            SECTION 3.4 PAYING AGENTS. Whenever the Company shall appoint a
Paying Agent other than the Trustee with respect to the

                                       30
<PAGE>

Securities of any Series, it will cause such Paying Agent to execute and deliver
to the Trustee an instrument in which such Agent shall agree with the Trustee,
subject to the provisions of this Section,

            (a) that it will hold all sums received by it as such Agent for the
      payment of the principal of or interest on the Securities of such Series
      or Coupons (whether such sums have been paid to it by the Company or by
      any other obligor on the Securities of such Series or Coupons) in trust
      for the benefit of the Holders of the Securities of such Series or of the
      Trustee, and upon the occurrence of an Event of Default pay over all such
      sums received by it to the Trustee,

            (b) that it will give the Trustee notice of any failure by the
      Company (or by any other obligor on the Securities of such Series) to make
      any payment of the principle of or interest on the Securities of such
      Series or Coupons when the same shall be due and payable, and

            (c) that it will give the Trustee notice of any change of address of
      any Holder of which it is aware.

            The Company will, on or prior to each due date of the principal of
or interest on the Securities of such Series or Coupons, deposit with the Paying
Agent a sum sufficient to pay such principal or interest so becoming due, and
(unless such Paying Agent is the Trustee) the Company will promptly notify the
Trustee of any failure to take such action.

            If the Company shall act as its own Paying Agent with respect to the
Securities of any Series or Coupons, it will, on or before each due date of the
principal of or interest on the Securities of such Series or Coupons, set aside,
segregate and hold in trust for the benefit of the Holders of the Securities of
such Series or Holders of such Coupons a sum sufficient to pay such principal or
interest so becoming due. The Company will promptly notify the Trustee of any
failure to take such action.

            Anything in this Section to the contrary notwithstanding, the
Company may at any time, for the purpose of obtaining a satisfaction and
discharge with respect to one or more or all Series of Securities or Coupons
hereunder, or for any other reason, pay or cause to be paid to the Trustee all
sums held in trust for any such Series by the Company or any Paying Agent
hereunder, as required by this Section, such sums to be held by the Trustee upon
the trusts herein contained.

                                       31
<PAGE>

            Anything in this Section to the contrary notwithstanding, the
agreement to hold sums in trust as provided in this Section is subject to the
provisions of Sections 10.3 and 10.4.

            SECTION 3.5 WRITTEN STATEMENT TO TRUSTEE. The Company will deliver
to the Trustee on or before May 1 in each year in which there are Securities
Outstanding hereunder an Officer's Certificate, stating that in the course of
the performance of their duties as officers of the Company they would normally
have knowledge of any default by the Company in the performance or fulfillment
of any covenant, agreement or condition contained in this Indenture, stating
whether or not they have knowledge of any such default and, if so, specifying
each such default of which the signers have knowledge and the nature thereof.

            SECTION 3.6 CORPORATE EXISTENCE. So long as any Securities shall be
Outstanding, subject to Article Nine, the Company will do or cause to be done
all things necessary to preserve and keep in full force and effect its corporate
existence, rights (charter and statutory) and franchises; provided, however,
that the Company shall not be required to preserve any such right or franchise
if the Board of Directors shall determine that the preservation thereof is no
longer desirable in the conduct of the business of the Company and that the loss
thereof is not disadvantageous in any material respect to the Holders.

            SECTION 3.7 ADDITIONAL AMOUNTS. If the Securities of a Series
provide for the payment of additional amounts, the Company will pay to the
Holder of any Security of such Series or any Coupon appertaining thereto
additional amounts as provided therein. Whenever in this Indenture there is
mentioned, in any context, the payment of the principal or premium, if any, of
or interest on, or in respect of, any security of a Series or payment of any
related Coupon or the net proceeds received on the sale or exchange of any
Security of any Series, such mention shall be deemed to include mention of the
payment of additional amounts provided for in this Section to the extent that,
in such context, additional amounts are, were or would be payable in respect
thereof pursuant to the provisions of this Section and express mention of the
payment of additional amounts (if applicable) in any provisions hereof shall not
be construed as excluding additional amounts in those provisions hereof where
such express mention is not made.

            If the Securities of a Series provide for the payment of additional
amounts, at least 10 days prior to the first interest payment date with respect
to that Series of Securities

                                       32
<PAGE>

(or if the Securities of that Series will not bear interest prior to maturity,
the first day on which a payment of principal is made), and at least 10 days
prior to each date of payment of principal, premium, if any, or interest if
there has been any change with respect to the matters set forth in the
below-mentioned Officer's Certificate, the Company will furnish the Trustee and
the Company's principal Paying Agent or Paying Agents, if other than the Trustee
, with an Officer's Certificate instructing the Trustee and such Paying Agent or
Paying Agents whether such payment of principal of or interest on the Securities
of that Series shall be made to Holders of Securities of that Series or any
related Coupons who are United States Aliens without withholding for or on
account of any tax, assessment or other governmental charge described in the
Securities of that Series. If any such withholding shall be required, then such
Officer's Certificate shall specify by country the amount, if any, required to
be withheld on such payments to such Holders of Securities or Coupons and the
Company will pay to the Trustee or such Paying Agent the additional amounts
required by this Section. The Company covenants to indemnify the Trustee and any
Paying Agent for, and to hold them harmless against, any loss, liability or
expense reasonably incurred without negligence or bad faith on their part
arising out of or in connection with actions taken or omitted by any of them in
reliance on any Officer's Certificate furnished pursuant to this Section.

            SECTION 3.8 DEFEASANCE OF CERTAIN OBLIGATIONS AND CERTAIN EVENTS OF
DEFAULT. Unless otherwise provided in the Board Resolutions, Officer's
Certificate or an indenture supplemental hereto establishing a series of
Securities subject to additional restrictive covenants or events of default as
contemplated by Section 2.3, the Company may omit to comply with any term,
provision or condition set forth in any such additional restrictive covenant,
and Section 5.1(d) (with respect to any such additional restrictive covenant),
Section 5.1(e) and any such additional event of default shall be deemed not to
be an Event of Default, in each case with respect to the Securities of any
Series, if the Company has irrevocably deposited or caused to be deposited with
the Trustee, under the terms of an irrevocable trust agreement in form and
substance satisfactory to the Trustee, as trust funds in trust (subject to
Sections 10.2, 10.3, 10.4 and 10.5 hereof) solely for the benefit of the
Securityholders of such Series for that purpose, (i) cash or (ii) direct
noncallable obligations of, or noncallable obligations guaranteed by, the United
States of America or an agency thereof for the payment of which guarantee or
obligation the full faith and credit of the United States of America is pledged
("U.S. Government Obligations"), or a combination thereof, maturing as

                                       33
<PAGE>

to principal and interest in such amounts and at such times as are sufficient,
without consideration of any reinvestment of such principal or interest, to pay
the principal of and interest on the outstanding Securities of such Series and
Coupons to maturity or redemption, as the case may be, provided that the Trustee
shall have been irrevocably instructed to apply such money or the proceeds of
such U.S. Government Obligations to the payment of said principal of and
interest on the Outstanding Securities and Coupons of such Series; provided
that:

            (a) such deposit shall not cause the Trustee with respect to the
      Securities of that Series to have a conflicting interest as defined in
      Section 6.8 and for purposes of the Trust Indenture Act with respect to
      the Securities of any Series;

            (b) such deposit will not result in a breach or violation of, or
      constitute a default under, this Indenture or any other agreement or
      instrument to which the Company is a party or by which it is bound; and

            (c) no Event of Default under Section 5.1(a), 5.1(b) or 5.1(c), or
      event which with the lapse of time would become an Event of Default with
      respect to the Securities of that Series shall have occurred and be
      continuing on the date of such deposit, and no Event of Default under
      Section 5.1(f) or Section 5.1(g) or event which with the giving of notice
      or lapse of time, or both, would become an Event of Default under Section
      5.1(f) or Section 5.1(g) shall have occurred and be continuing on the 91st
      day after such date of deposit.

            Such irrevocable trust agreement shall include, among other things,
provision for (1) payment of the principal of and interest on the Securities of
such Series and Coupons when due (by redemption, sinking fund payments or
otherwise), (2) the payment of the expenses of the Trustee incurred or to be
incurred in connection with carrying out such trust provisions, (3) rights of
registration, transfer, substitution and exchange of Securities of such Series
and Coupons in accordance with the terms stated in this Indenture and (4)
continuation of the rights and obligations and immunities of the Trustee as
against the Securityholders of such Series as stated in this Indenture.

            After any such irrevocable deposit, accompanied by an Officer's
Certificate which shall state that the provisions of the first two paragraphs of
this Section 3.8 have been complied with, and upon delivery by the Company to
the Trustee of an Opinion of Counsel to the effect that Securityholders of such

                                       34
<PAGE>

Series will not recognize income, gain or loss for Federal income tax purposes
as a result of such deposit and discharge and will be subject to Federal income
tax on the same amount and in the same manner and at the same time as would have
been the case if such deposit and discharge had not occurred, then the Company
shall be discharged of its obligations under the Securities of such Series and
this Indenture with respect to such Series except for those surviving
obligations specified above, and the Trustee upon request shall acknowledge in
writing such discharge. In addition, if the Securities of that Series are then
listed on the New York Stock Exchange, Inc., the Company shall have delivered to
the Trustee an Opinion of Counsel to the effect that such deposit, defeasence
and discharge will not cause such Securities to be delisted. Prior to the
delivery of such acknowledgment, the Trustee may require the Company to deliver
to it an Officer's Certificate and Opinion of Counsel, each stating that all
conditions precedent provided for herein relating to the deposit and discharge
contemplated by this provision have been complied with, and the Trustee may also
require that the Opinion of Counsel shall also state that such deposit does not
violate applicable law.

                                    ARTICLE 4

                    SECURITYHOLDERS' LISTS AND REPORTS BY THE
                             COMPANY AND THE TRUSTEE

            SECTION 4.1 COMPANY TO FURNISH TRUSTEE INFORMATION AS TO NAMES AND
ADDRESSES OF SECURITYHOLDERS. The Company covenants and agrees that it will
furnish or cause to be furnished to the Trustee a list in such form as the
Trustee may reasonably require of the names and addresses of the Holders of the
Registered Securities of each Series:

            (a) semiannually and not more than 10 days after each record date
      for the payment of interest on such Securities, as hereinabove specified,
      as of such record date and on dates to be determined pursuant to Section
      2.3 for non-interest bearing securities in each year, and

            (b) at such other times as the Trustee may request in writing,
      within 30 days after receipt by the Company of any such request as of a
      date not more than 15 days prior to the time such information is
      furnished;

provided that if and so long as the Trustee shall be the Security registrar for
such Series, such list shall not be required to be furnished but in any event
the Company shall be required to

                                       35
<PAGE>

furnish such information concerning the Holders of Unregistered Securities which
is known to it; provided, further, that the Company shall have no obligation to
investigate any matter relating to any Holder of an Unregistered Security or any
Holder of a Coupon.

            SECTION 4.2 PRESERVATION AND DISCLOSURE OF SECURITYHOLDERS' LISTS.
(a) The Trustee shall preserve, in as current a form as is reasonably
practicable, all information as to the names and addresses of the Holders of
each Series of Securities contained in the most recent list furnished to it as
provided in Section 4.1 or maintained by the Trustee in its capacity as Security
registrar for such Series, if so acting. The Trustee may destroy any list
furnished to it as provided in Section 4.1 upon receipt of a new list so
furnished.

            (b) In case three or more Holders of Securities (hereinafter
referred to as "applicants") apply in writing to the Trustee and furnish to the
Trustee reasonable proof that each such applicant has owned Security for a
period of at least six months preceding the date of such application, and such
application states that the applicants desire to communicate with other Holders
of Securities of a particular Series (in which case the applicants must all hold
Securities of such Series) or with Holders of all Securities with respect to
their rights under this Indenture or under such Securities and such application
is accompanied by a copy of the form of proxy or other communication which such
applicants propose to transmit, then the Trustee shall, within five business
days after the receipt of such application, at its election, either

            (i) afford to such applicants access to the information preserved at
      the time by the Trustee in accordance with the provisions of subsection
      (a) of this Section, or

            (ii) inform such applicants as to the approximate number of Holders
      of Securities of such Series or all Securities, as the case may be, whose
      names and addresses appear in the information preserved at the time by the
      Trustee, in accordance with the provisions of subsection (a) of this
      Section, as to the approximate cost of mailing to such Securityholders the
      form of proxy or other communication, if any, specified in such
      application.

            If the Trustee shall elect not to afford to such applicants access
to such information, the Trustee shall, upon the written request of such
applicants, mail to each Securityholder of such Series or all Securities, as the
case may

                                       36
<PAGE>

be, whose name and address appear in the information preserved at the time by
the Trustee in accordance with the provisions of subsection (a) of this Section,
a copy of the form of proxy or other communication which is specified in such
request, with reasonable promptness after a tender to the Trustee of the
material to be mailed and of payment, or provision for the payment, of the
reasonable expenses of mailing, unless within five days after such tender, the
Trustee shall mail to such applicants and file with the Commission together with
a copy of the material to be mailed, a written statement to the effect that, in
the opinion of the Trustee, such mailing would be contrary to the best interests
of the Holders of Securities of such Series or all Securities, as the case may
be, or could be in violation of applicable law. Such written statement shall
specify the basis of such opinion. If the Commission, after opportunity for a
hearing upon the objections specified in the written statement so filed, shall
enter an order refusing to sustain any of such objections or if, after the entry
of such order sustaining one or more of such objections, the Commission shall
find, after notice and opportunity for hearing, that all the objections so
sustained have been met, and shall enter an order so declaring, the Trustee
shall mail copies of such material to all such Securityholders with reasonable
promptness after the entry of such order and the renewal of such tender;
otherwise the Trustee shall be relieved of any obligation or duty to such
applicants respecting their application.

            (c) Each and every Holder of Securities, by receiving and holding
the same, agrees with the Company and the Trustee that neither the Company nor
the Trustee nor any agent of the Company or the Trustee shall be held
accountable by reason of the disclosure of any such information as to the names
and addresses of the Holders of Securities in accordance with provisions of
subsection (b) of this Section, regardless of the source from which such
information was derived, and that the Trustee shall not be held accountable by
reason of mailing any material pursuant to a request made under such subsection
(b).

            SECTION 4.3 REPORTS BY THE COMPANY. The Company covenants:

            (a) to file with the Trustee, within 15 days after the Company is
      required to file the same with the Commission, copies of the annual
      reports and of the information, documents, and other reports (or copies of
      such portions of any of the foregoing as the Commissioner may from time to
      time by rules and regulations prescribe) which the Company may be required
      to file with the Commission pursuant to Section 13 or Section 15(d) of the
      Securities Exchange Act

                                       37
<PAGE>

      of 1934, and if the Company is not required to file information,
      documents, or reports pursuant to either of such Sections, then to file
      with the Trustee and the Commission, in accordance with rules and
      regulations prescribed from time to time by the Commission, such of the
      supplementary and periodic information, documents, and reports which may
      be required pursuant to Section 13 of the Securities Exchange Act of 1934,
      or in respect of a security listed and registered on a national securities
      exchange as may be prescribed from time to time in such rules and
      regulations;

            (b) to file with the Trustee and the Commission, in accordance with
      rules and regulations prescribed from time to time by the Commission, such
      additional information, documents, and reports with respect to compliance
      by the Company with the conditions and covenants provided for in this
      Indenture as may be required from time to time by such rules and
      regulations; and

            (c) to transmit by mail to the Holders of Securities in the manner
      and to the extent required by Sections 4.4(c) and 11.4, within 30 days
      after the filing thereof with the Trustee, such summaries of any
      information, documents, and reports required to be filed by the Company
      pursuant to subsection (a)and(b)of this Section as may be required to be
      transmitted to such Holders by rules and regulations prescribed from time
      to time by the Commission.

            SECTION 4.4 REPORTS BY THE TRUSTEE. (a) On or before __________ in
each year following the date hereof, so long as any Securities are outstanding
hereunder, the Trustee shall transmit by mail as provided below to the
Securityholders of each Series, as hereinafter in this Section provided, a brief
report dated May 15 with respect to:

                  (i) its eligibility under Section 6.9 and its qualification
      under Section 6.8, or in lieu thereof, if to the best of its knowledge it
      has continued to be eligible and qualified under such Sections, a written
      statement to such effect;

                  (ii) the character and amount of any advances (and if the
      Trustee elects so to state, the circumstances surrounding the making
      thereof) made by the Trustee, as such, which remain unpaid on the date of
      such report and for the reimbursement of which it claims or may claim a
      lien or charge, prior to that of the Securities of any Series, on any
      property or funds held or collected by it as Trustee,

                                       38
<PAGE>

      except that the Trustee shall not be required (but may elect) to report
      such advances if such advances so remaining unpaid aggregate not more than
      1/2 of l% of the principal amount of the Securities of any Series
      Outstanding on the date of such report;

                  (iii) the amount, interest rate, and maturity date of all
      other indebtedness owing by the Company (or by any other obligor on the
      Securities) to the Trustee in its individual capacity on the date of such
      report, with a brief description of any property held as collateral
      security therefor, except any indebtedness based upon a creditor
      relationship arising in any manner described in Section 6.13(b)(2),(3),(4)
      or (6);

                  (iv) the property and funds, if any, physically in the
      possession of the Trustee (as such) on the date of such report;

                  (v) any additional issue of Securities which the Trustee has
      not previously reported; and

                  (vi) any action taken by the Trustee in the performance of its
      duties under this Indenture which it has not previously reported and which
      in its opinion materially affects the Securities, except action in respect
      of a default, notice of which has been or is to be withheld by it in
      accordance with the provisions of Section 5.11.

            (b) The Trustee shall transmit to the Securityholders of each
Series, as provided in subsection (c) of this Section, a brief report with
respect to the character and amount of any advances (and if the Trustee elects
so to state, the circumstances surrounding the making thereof) made by the
Trustee, as such, since the date of the last report transmitted pursuant to the
provisions of subsection (a) of this Section (or if such report has yet been so
transmitted, since the date of this Indenture) for the reimbursement of which it
claims or may claim a lien or charge prior to that of the Securities of such
Series on property or funds held or collected by it as Trustee and which it has
not previously reported pursuant to this subsection (b), except that the Trustee
shall not be required (but may elect) to report such advances if such advances
remaining unpaid at any time aggregate 10% or less of the principal amount of
Securities of such Series Outstanding at such time, such report to be
transmitted within 90 days after such time.

                                       39
<PAGE>

            (c) Reports pursuant to this Section shall be transmitted by mail to
all registered Holders of Securities, as the names and addresses of such Holders
appear upon the registry book of the Company and to such Holders of Unregistered
Securities as have, within the two years preceding such notice, filed their
names and addresses with the Trustee for that purpose, and, except in the case
of reports pursuant to subsection (b) of this Section 4.4, to all Holders whose
names and addresses appear in the information preserved at the time of such
notice by the Trustee in accordance with the provisions of Section 4.2(a).

            (d) A copy of each such report shall, at the time of such
transmission to Securityholders, be furnished to the Company and be filed by the
Trustee with each stock exchange upon which the Securities of any applicable
Series are listed and also with the Commission. The Company agrees to notify the
Trustee with respect to any Series when and as the Securities of such Series
become admitted to trading on any national securities exchange.

                                    ARTICLE 5

                   REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                               ON EVENT OF DEFAULT

            SECTION 5.1 EVENT OF DEFAULT DEFINED; ACCELERATION OF MATURITY;
WAIVER OF DEFAULT. "Event of Default" as used herein with respect to Securities
of any Series whatever means each one of the following events which shall have
occurred and be continuing (whatever the reason for such Event of Default and
whether it shall be voluntary or involuntary or be effected by operation of law
or pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body):

            (a) default in the payment of any installment 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

            (b) default in the payment of all or any part of the principal 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

            (c) default in the payment of any sinking fund installment as and
      when the same shall become due and payable by the terms of the Securities
      of such Series; or

                                       40
<PAGE>

            (d) default in the performance, or breach, of any agreement of the
      Company in respect of the Securities of such Series (other than an
      agreement in respect of the Securities of such Series a default in whose
      performance or whose breach is elsewhere in this Section specifically
      dealt with), and continuance of such default or breach for a period of 60
      days after receipt by the Company from the Trustee or the Holders of at
      least 25% in principal amount of the Outstanding Securities of such Series
      affected thereby, of a written notice specifying such default or breach
      and requiring it to be remedied and stating that such notice is a "Notice
      of Default" hereunder; or

            (e) a default under any bond, debenture, note or other evidence of
      indebtedness for money borrowed by the Company (including a default with
      respect to Securities of any Series other than that Series) or under any
      mortgage, indenture or instrument under which there may be issued or by
      which there may be secured or evidenced any indebtedness for money
      borrowed by the Company (including this Indenture), whether such
      indebtedness now exists or shall hereafter be created, which default shall
      constitute a failure to pay such indebtedness in a principal amount in
      excess of $20,000,000 when due and payable after the expiration of any
      applicable grace period with respect thereto or shall have resulted in
      such indebtedness in a principal amount in excess of $20,000,000 becoming
      or being declared due and payable prior to the date on which it would
      otherwise have become due and payable, without such indebtedness having
      been discharged, or such acceleration having been rescinded or annulled,
      within a period of 15 days after there shall have been given, by
      registered or certified mail, to the Company by the Trustee or to the
      Company and the Trustee by the Holders of at east 25% in principal amount
      of the Outstanding Securities of that Series a written notice specifying
      such default and requiring the Company to cause such indebtedness to be
      discharged or cause such acceleration to be rescinded or annulled and
      stating that such notice is a "Notice of Default" hereunder; or

            (f) the Company pursuant to or under or within the meaning of any
      Bankruptcy Law: (i) commences a voluntary case or proceeding; (ii)
      consents to the entry of an order for relief against it in an involuntary
      case or proceeding or the commencement of any case against it; (iii)
      consents to the appointment of a Custodian of it or any substantial part
      of its property; (iv) makes a general assignment for the benefit of its
      creditors; (v) files a petition in

                                       41
<PAGE>

      bankruptcy or answer or consent seeking reorganization or relief; or (vi)
      consents to the filing of such petition or the appointment of or taking
      possession by a Custodian; or

            (g) a court of competent jurisdiction enters an order or decree
      under any Bankruptcy Law that: (i) is for relief against the Company in an
      involuntary case or proceeding, or adjudicates the Company insolvent or
      bankrupt; (ii) appoints a Custodian of the Company or for any substantial
      part of its property; or (iii) orders the winding up or liquidation of the
      Company; and the order or decree remains unstayed and in effect for 60
      days; or

            (h) there has occurred any other Event of Default provided in the
      indenture supplemental hereto or Board Resolution under which such Series
      of Securities is issued or in the form of Security for such Series.

            "Bankruptcy Law" means Title 11, United States Code, or any similar
Federal or state law for the relief of debtors. "Custodian" means any receiver,
trustee, assignee, liquidator, custodian or similar official under any
Bankruptcy Law.

            If an Event of Default (other than an Event of Default under clauses
(f) and (g)) with respect to Securities of any Series at the time Outstanding
occurs and is continuing, then in every such case the Trustee or the Holders of
not less than 25% in principal amount of the Outstanding Securities of that
Series may declare the principal amount (or, if the Securities of that Series
are Original Issue Discount Securities, such portion of the principal amount as
may be specified in the terms of that Series) of all of the Securities of that
Series and the interest, if any, accrued thereon to be due and payable
immediately, by a notice in writing to the Company (and to the Trustee given by
Holders), and upon any such declaration such principal amount (or specified
amount) and interest shall become immediately due and payable. If an Event of
Default described in clause (f) or (g) occurs and is continuing, the entire
principal amount (or, if the 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 the Securities then Outstanding and interest
accrued thereon shall become and be immediately due and payable without any
declaration or other act on the part of the Trustee or any Securityholders.

            The foregoing provisions, however, are subject to the condition that
if, at any time after the principal (or, if the Securities are Original Issue
Discount Securities, such portion of the principal as may be specified in the
terms thereof) of the

                                       42
<PAGE>

Securities of any Series shall have been so declared due and payable, and before
any judgment or decree for the payment of the moneys due shall have been
obtained or entered as hereinafter provided, the Company shall pay or shall
deposit with the Trustee a sum sufficient to pay all matured installments of
interest upon all the Securities of such Series and the principal of any and all
Securities of such Series which shall have become due otherwise than by
acceleration (with interest upon such principal and, to the extent that payment
of such interest is enforceable under applicable law, on overdue installments of
interest, at the same rate as the rate of interest or Yield to Maturity (in the
case of Original Issue Discount Securities) specified in the Securities of such
Series, to the date of such payment or deposit) and such amount as shall be
sufficient to cover reasonable compensation to the Trustee, its agents,
attorneys and counsel, and all other expenses and liabilities incurred, and all
advances made, by the Trustee except as a result of negligence or bad faith, and
if any and all Events of Default under the Indenture, other than the nonpayment
of the principal of Securities which shall have become due by acceleration,
shall have been cured, waived or otherwise remedied as provided herein - then
and in every such case the Holders of a majority in aggregate principal amount
of all the Securities of such Series then Outstanding, by written notice to the
Company and to the Trustee, may waive all defaults with respect to such Series
and rescind and annul such declaration and its consequences, but no such waiver
or rescission and annulment shall extend to or shall affect any subsequent
default or shall impair any right consequent thereon.

            For all purposes under this Indenture, if a portion of the principal
of any Original Issue Discount Securities shall have been accelerated and
declared due and payable pursuant to the revisions hereof, then, from and after
such declaration, unless such declaration has been rescinded and annulled, the
principal amount of such Original Issue Discount Securities shall be deemed, for
all purposes hereunder, to be such portion of the principal thereof as shall be
due and payable as a result of such acceleration, and payment of such portion of
the principal thereof as shall be due and payable as a result of such
acceleration, together with interest, if any, thereon and all other amounts
owing thereunder, shall constitute payment in full of such Original Issue
Discount Securities.

            SECTION 5.2 COLLECTION OF INDEBTEDNESS BY TRUSTEE; TRUSTEE MAY PROVE
DEBT. The Company covenants that (a) in case default shall be made in the
payment of any installment of interest on any of the Securities of any Series
when such interest shall have become due and payable, and such default

                                       43
<PAGE>

shall have continued for a period of 30 days or (b) in case default shall be
made in the payment of all or any principal of any of the Securities of any
Series when the same shall have become due and payable, whether upon maturity of
the Securities of such Series or upon any redemption or by declaration or
otherwise - then upon demand of the Trustee, the Company will pay to the Trustee
for the benefit of the Holders of the Securities of such Series and the Holders
of any Coupons appertaining thereto the whole amount that then shall have become
due and payable on all Securities of such Series or such Coupons for principal
of or interest, as the case may be (with interest to the date of such payment
upon the overdue principal and, to the extent that payment of such interest is
enforceable under applicable law, on overdue installments of interest at the
same rate as the rate of interest or Yield to Maturity (in the case of Original
Issue Discount Securities) specified in the Securities of such Series); and in
addition thereto, such further amount as shall be sufficient to cover the costs
and expenses of collection, including reasonable compensation to the Trustee and
each predecessor Trustee, their respective agents, attorneys and counsel, and
any expenses and liabilities incurred, and all advances made, by the Trustee and
each predecessor Trustee except as a result of its negligence or bad faith.

            Until such demand is made by the Trustee, the Company may pay the
principal of and interest on the Securities of any Series to the persons
entitled thereto, whether or not the principal of and interest on the Securities
of such Series are overdue.

            In case the Company shall fail forthwith to pay such amounts upon
such demand, the Trustee, in its own name and as trustee of an express trust,
shall be entitled and empowered to institute any action or proceedings at law or
in equity for the collection of the sums so due and unpaid, and may prosecute
any such action or proceedings to judgment or final decree, and may enforce any
such judgment or final decree against the Company or other obligor upon such
Securities and collect in the manner provided by law out of the property of the
Company or other obligor upon such Securities, wherever situated, the moneys
adjudged or decreed to be payable.

            In case there shall be pending proceedings relative to the Company
or any other obligor upon the Securities under any Bankruptcy Law, or in case a
Custodian shall have been appointed for or taken possession of the Company or
its property or such other obligor, or in case of any other comparable judicial
proceedings relative to the Company or other obligor under the Securities of any
Series, or to the creditors or property of the

                                       44
<PAGE>

Company or such other obligor, the Trustee, irrespective of whether the
principal of any Securities shall then be due and payable as therein expressed
or by declaration or otherwise and irrespective of whether the Trustee shall
have made any demand pursuant to the provisions of this Section, shall be
entitled and empowered, by intervention in such proceedings or otherwise:

            (a) to file and prove a claim or claims for the whole amount of
      principal and interest owing and unpaid in respect of the Securities of
      any Series, 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 reasonable compensation to the Trustee and each predecessor
      Trustee, and their respective agents, attorneys and counsel, and for
      reimbursement of all expenses and liabilities incurred, and all advances
      made, by the Trustee and each predecessor Trustee, except as a result of
      negligence or bad faith) and of the Securityholders and the Holders of any
      Coupons appertaining thereto allowed in any judicial proceedings relative
      to the Company or other obligor upon all Securities of any Series, or to
      the creditors or property of the Company or such other obligor,

            (b) unless prohibited by applicable law and regulations, to vote on
      behalf of the holders of the Securities of any Series in any election of a
      trustee or a standby trustee in arrangement, reorganization, liquidation
      or other bankruptcy or insolvency proceedings or person performing similar
      functions in comparable proceedings, and

            (c) to collect and receive any moneys or other property payable or
      deliverable on any such claims, and to distribute all amounts received
      with respect to the claims of the Securityholders and of the Trustee on
      their behalf; and any Custodian or other similar official is hereby
      authorized by each of the Holders to make payments to the Trustee, and, in
      the event that the Trustee shall consent to the making of payments
      directly to the Securityholders, to pay to the Trustee such amounts as
      shall be sufficient to cover reasonable compensation to the Trustee, each
      predecessor Trustee and their respective agents, attorneys and counsel,
      and all other expenses and liabilities incurred, and all advances made, by
      the Trustee and each predecessor Trustee except as a result of negligence
      or bad faith and all other amounts due to the Trustee or any predecessor
      Trustee pursuant to Section 6.6.

            Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or vote for or accept or

                                       45
<PAGE>

adopt on behalf of any Securityholder any plan of reorganization, arrangement,
adjustment or composition affecting the Securities of any Series or the rights
of any Holder thereof, or to authorize the Trustee to vote in respect of the
claim of any Securityholder in any such proceeding except, as aforesaid, to vote
for the election of a trustee in bankruptcy or similar person.

            All rights of action and of asserting claims under this Indenture,
or under any of the Securities, may be enforced by the Trustee without the
possession of any of the Securities or the production thereof at any trial or
other proceedings relative thereto, and any such action or proceedings
instituted by the Trustee shall be brought in its own name as trustee of an
express trust, and any recovery of judgment, subject to the payment of the
expenses, disbursements and compensation of the Trustee, each predecessor
Trustee and their respective agents and attorneys, shall be for the ratable
benefit of the Holders of the securities and Holders of any Coupons in respect
of which such action was taken.

            In any proceedings brought by the Trustee (and also any proceedings
involving the interpretation of any provision of this Indenture to which the
Trustee shall be a party), the Trustee shall be held to represent all the
Holders of the Securities and Coupons appertaining thereto in respect to which
such action was taken, and it shall not be necessary to make any Holders of such
Securities and Coupons appertaining thereto parties to any such proceedings.

            SECTION 5.3 APPLICATION OF PROCEEDS. Any moneys collected by the
Trustee pursuant to this Article in respect of the Securities of any Series
shall be applied in the following order at the date or dates fixed by the
Trustee and, in case of the distribution of such moneys on account of principal
or interest, upon presentation of the several Securities and any Coupons
appertaining thereto in respect of which moneys have been collected and stamping
(or otherwise noting) thereon the payment, or issuing Securities of such Series
in reduced principal amounts in exchange for the presented Securities of like
Series if only partially paid, or upon surrender thereof if fully paid:

            FIRST: To the payment of costs and expenses applicable to such
      Series in respect of which moneys have been collected, including
      reasonable compensation to the Trustee and each predecessor Trustee and
      their respective agents and attorneys and of all expenses and liabilities
      incurred, and all advances made, by the Trustee and each predecessor
      Trustee except as a result of negligence or bad faith, and

                                       46
<PAGE>

      all other amounts due to the Trustee or any predecessor Trustee pursuant
      to Section 6.6;

            SECOND: In case the principal of the Securities of such Series in
      respect of which moneys have been collected shall not have become and be
      then due and payable, to the payment of interest on the Securities of such
      Series in default in the order of the maturity of the installments of such
      interest, with interest (to the extent that such interest has been
      collected by the Trustee) upon the overdue installments of interest at the
      same rate as the rate of interest or Yield to Maturity (in the case of
      Original Issue Discount Securities) specified in such Securities, such
      payments to be made ratably to the persons entitled thereto, without
      discrimination or preference;

            THIRD: In case the principal of the Securities of such Series in
      respect of which moneys have been collected shall have become and shall be
      then due and payable, to the payment of the whole amount then owing and
      unpaid upon all the Securities such Series for principal and interest,
      with interest upon the overdue principal, and (to the extent that payment
      of such interest is permissible by law and that such interest has been
      collected by the Trustee) upon overdue installments of interest at the
      same rate as the rate of interest or Yield to Maturity (in the case of
      Original Issue Discount Securities) specified in the Securities of such
      Series; and in case such moneys shall be insufficient to pay in full the
      whole amount so due and unpaid upon the Securities of such Series, then to
      the payment of such principal and interest or Yield to Maturity, without
      preference or priority of principal over interest or Yield to Maturity or
      of interest or Yield to Maturity over principal, or of any installment of
      interest over any other installment of interest, or of any Security of
      such Series over any other Security of such Series, ratably to the
      aggregate of such principal and accrued and unpaid interest; and

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

            SECTION 5.4 SUITS FOR ENFORCEMENT. In case an Event of Default has
occurred, has not been waived and is continuing, the Trustee may in its
discretion proceed to protect and enforce the rights vested in it by this
Indenture by such appropriate judicial proceedings as the Trustee shall deem
most effective to protect and enforce any of such rights, either at law or in
equity or in bankruptcy or otherwise, whether for the specific

                                       47
<PAGE>

enforcement of any covenant or agreement contained in this Indenture or in aid
of the exercise of any power granted in this Indenture or to enforce any other
legal or equitable right vested in the Trustee by this Indenture or by law.

            SECTION 5.5 RESTORATION OF RIGHTS ON ABANDONMENT OF PROCEEDINGS. In
case the Trustee shall have proceeded to enforce any right under this Indenture
and such proceedings shall have been discontinued or abandoned for any reason,
or shall have been determined adversely to the Trustee, then and in every such
case the Company and the Trustee shall be restored respectively to their former
positions and rights hereunder, and all rights, remedies and powers of the
Company, the Trustee and the Securityholders shall continue as though no such
proceedings had been taken.

            SECTION 5.6 LIMITATIONS ON SUITS BY SECURITYHOLDERS. No Holder of
any Security of any Series or Holder of any Coupon shall have any right by
virtue or by availing of any provision of this Indenture to institute any action
or proceeding at law or in equity or in bankruptcy or otherwise upon or under or
with respect to this Indenture, or for the appointment of a Custodian or other
similar official or for any other remedy hereunder, unless such Holder
previously shall have given to the Trustee written notice of default and of the
continuance thereof, as hereinbefore provided, and unless also the Holders of
not less than 25% in aggregate principal amount of the Securities of such Series
then Outstanding shall have made written request upon the Trustee to institute
such action or proceedings in its own name as trustee hereunder and shall have
offered to the Trustee such reasonable indemnity, as it may require against the
costs, expenses and liabilities to be incurred therein or thereby and the
Trustee for 60 days after its receipt of such notice, request and offer of
indemnity shall have failed to institute any such action or proceeding and no
direction inconsistent with such written request shall have been given to the
Trustee pursuant to Section 5.9; it being understood and intended, and being
expressly covenanted by the taker and Holder of every Security and by a Holder
of each Coupon appertaining thereto and the Trustee, that no one or more Holders
of Securities of any Series or one or more Securities of any Series or one or
more Holders of any Coupons appertaining thereto shall have any right in any
manner whatever, by virtue or by availing of any provisions of this Indenture to
affect, disturb or prejudice the rights of any other such Holder of Securities
or any other Holders of such Coupons, or to obtain or seek to obtain priority
over or preference to any other such Holder or to enforce any right under this
Indenture, except in the manner herein provided and for the equal, ratable and
common benefit of all Holders of Securities of

                                       48
<PAGE>

the applicable Series and all the Holders of Coupons appertaining thereto. For
the protection and enforcement of the provisions of this Section, each any every
Securityholder and the Trustee shall be entitled to such relief as can be given
either at law or in equity.

            SECTION 5.7 UNCONDITIONAL RIGHTS OF SECURITYHOLDERS TO INSTITUTE
CERTAIN SUITS. Notwithstanding any provision in this Indenture and any provision
of any Security or Coupon, the right of any Holder of any Security and the right
of any Holder of any Coupon appertaining thereto to receive payment of the
principal of and interest on such Security on or after the respective due dates
expressed in such Security, or to institute suit for the enforcement of any such
payment on or after such respective dates, shall not be impaired or affected
without the consent of such Holder.

            SECTION 5.8 POWERS AND REMEDIES CUMULATIVE; DELAY OR OMISSION NOT
WAIVER OF DEFAULT. Except as provided in Section 5.6, no right or remedy herein
conferred upon or reserved to the Trustee or to the Securityholders 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.

            No delay or omission of the Trustee or of any Securityholder to
exercise any right or power accruing upon any Event of Default occurring and
continuing as aforesaid shall impair any such right or power or shall be
construed to be a waiver of any such Event of Default or an acquiescence
therein; and, subject to Section 5.6, every power and remedy given by this
Indenture or by law to the Trustee, to the Securityholders or to the Holder of
any Coupon appertaining thereto may be exercised from time to time, and as often
as shall be deemed expedient, by the Trustee, the Securityholders or Holders of
any Coupon.

            SECTION 5.9 CONTROL BY SECURITYHOLDERS. The Holders of a majority in
aggregate principal amount of the Securities of each Series affected (with each
Series treated as a separate class) at the time Outstanding 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 by this Indenture;
provided that such direction shall not be otherwise than in accordance with law
and the provisions of

                                       49
<PAGE>

this Indenture and provided further that (subject to the provisions of Section
6.1) the Trustee shall have the right to decline to follow any such direction if
the Trustee, being advised by counsel, shall determine that the action or
proceeding so directed may not lawfully be taken or if the Trustee in good faith
by its board of directors, the executive committee, or a trust committee of
directors or Responsible Officers of the Trustee shall determine that the action
or proceedings so directed would involve the Trustee in personal liability or if
the Trustee in good faith shall so determine that the actions or forebearances
specified in or pursuant to such direction would be unduly prejudicial to the
interests of Holders of the Securities of all Series or of the Holders of any
Coupons appertaining thereto so affected not joining in the giving of said
direction, it being understood that (subject to Section 6.1) the Trustee shall
have no duty to ascertain whether or not such actions or forebearances are
unduly prejudicial to such Holders.

            Nothing in this Indenture shall impair the right of the Trustee in
its discretion to take any action deemed proper by the Trustee and which is not
inconsistent with such direction or directions by Securityholders.

            SECTION 5.10 WAIVER OF PAST DEFAULTS. Prior to the declaration of
the acceleration of the maturity of the Securities of any Series as provided in
Section 5.1, the Holders of a majority in aggregate principal amount of the
Securities of such Series then Outstanding may waive any such default or Event
of Default and its consequences except a default in respect of a covenant or
provision hereof which cannot be modified or amended without the consent of the
Holder of each Security affected. In the case of any such waiver, the Company,
the Trustee, the Holders of the Securities of such Series and the Holder of any
Coupon appertaining thereto shall be restored to their former positions and
rights hereunder, respectively.

            Upon any such waiver, such default shall cease to exist and be
deemed to have been cured and not to have occurred, and any Event of Default
arising therefrom shall be deemed to have been cured and not to have occurred
for every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
thereon.

            SECTION 5.11 TRUSTEE TO GIVE NOTICE OF DEFAULT, BUT MAY WITHHOLD IN
CERTAIN CIRCUMSTANCES. The Trustee shall transmit to the Securityholders of any
Series notice in the manner and to the extent provided in Section 11.4, of all
defaults which have occurred with respect to such Series, such

                                       50
<PAGE>

notice to be transmitted within 90 days after the occurrence thereof, unless
such defaults shall have been cured before the giving of such notice (the term
"default" or "defaults" for the purposes of this Section being hereby defined to
mean any event or condition which is, or with notice or lapse of time or both
would become, an Event of Default); provided that, except in the case of default
in the payment of the principal of or interest on any of the Securities of such
Series or any default in the payment of any sinking fund installment or
analogous obligation in respect of any of the Securities of such Series, the
Trustee shall be protected in withholding such notice if and so long as the
board of directors, the executive committee, or a trust committee of directors
or trustees or Responsible Officers of the Trustee in good faith determines that
the withholding of such notice is in the interests of the Securityholders of
such Series.

            SECTION 5.12 RIGHT OF COURT TO REQUIRE FILING OF UNDERTAKING TO PAY
COSTS. All parties to this Indenture agree, and each Holder of any Security and
each Holder of any Coupon, by his acceptance thereof, shall be deemed to have
agreed, that a court may in its discretion require, 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, the
filing by any party litigant in such suit of an undertaking to pay the costs of
such suit, and that such court may in its discretion assess reasonable costs,
including reasonable attorneys' fees, against any party litigant in such suit,
having due regard to the merits and good faith of the claims or defenses made by
such party litigant; but the provisions of this Section shall not apply to any
suit instituted by the Trustee, to any suit instituted by any Securityholder or
group of Securityholders of any Series holding in the aggregate more than 10% in
aggregate principal amount of the Securities of such Series, or to any suit
instituted by any Securityholder for the enforcement of the payment of the
principal of or interest on any Security on or after the due date expressed in
such Security.

                                    ARTICLE 6

                             CONCERNING THE TRUSTEE

            SECTION 6.1 DUTIES AND RESPONSIBILITIES OF THE TRUSTEE; PRIOR TO
DEFAULT; DURING DEFAULT. With respect to the Holders of any Series of Securities
issued hereunder, the Trustee, prior to the occurrence of an Event of Default
with respect to the Securities of a particular Series and after the curing or
waiving of all Events of Default which may have occurred with respect to such
Series, undertakes to perform such

                                       51
<PAGE>

duties and only such duties as are specifically set forth in this Indenture. In
case an Event of Default with respect to the Securities of a Series has occurred
(which has not been cured or waived) of which a Responsible Officer has actual
knowledge, the Trustee shall exercise such of the rights and powers vested in it
by this Indenture, and use the same degree of care and skill in their exercise,
as a prudent man would exercise or use under the circumstances in the conduct of
his own affairs.

            No provision of this Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act or its own wilful misconduct, except that

            (a) prior to the occurrence of an Event of Default with respect to
      the Securities of any Series and after the curing or waiving of all such
      Events of Default with respect to such Series which may have occurred:

                  (i) the duties and obligations of the Trustee with respect to
            the Securities of an Series shall be determined solely by the
            express provisions of this Indenture, and the Trustee shall not be
            liable except for the performance of such duties and obligations as
            are specifically set forth in this Indenture, and no implied
            covenants or obligations shall be read into this Indenture against
            the Trustee; and

                  (ii) in the absence of bad faith on the part of the Trustee,
            the Trustee may conclusively rely, as to the truth of the statements
            and the correctness of the opinions expressed therein, upon any
            statements, certificates or opinions furnished to the Trustee and
            conforming to the requirements of this Indenture; but in the case of
            any such statements, certificates or opinions which by any provision
            hereof are specifically required to be furnished to the Trustee, the
            Trustee shall be under a duty to examine the same to determine
            whether or not they conform to the requirements of this Indenture;

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

            (c) the Trustee shall not be liable with respect to any action taken
      or omitted to be taken by it in good faith

                                       52
<PAGE>

      in accordance with the direction of the Holders pursuant to Section 5.9
      relating to the time, method and place of conducting any proceeding for
      any remedy available to the Trustee, or exercising any trust or power
      conferred upon the Trustee, under this Indenture.

            None of the provisions contained in this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur personal financial
liability in the performance of any of its duties or in the exercise of any of
its rights or powers, if there shall be reasonable ground for believing that the
repayment of such funds or adequate indemnity against such liability is not
reasonably assured to it. Notwithstanding anything herein to the contrary, every
provision of this Indenture relating to the Trustee shall be subject to this
Section 6.1.

            SECTION 6.2 CERTAIN RIGHTS OF THE TRUSTEE. Subject to Section 6.1:

            (a) the Trustee may rely and shall be protected in acting or
      refraining from acting upon any resolution, officer's Certificate or any
      other certificate, statement, instrument, opinion, report, notice,
      request, consent, order, bond, debenture, note, coupon, security 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, direction, order or demand of the Company mentioned
      herein shall be sufficiently evidenced by an Officer's Certificate (unless
      other evidence in respect thereof be herein specifically prescribed); and
      any resolution of the Board of Directors may be evidenced to the Trustee
      by a copy thereof certified by the secretary or any assistant secretary of
      the Company;

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

            (d) the Trustee shall be under no obligation to exercise any of the
      trusts or powers vested in it by this Indenture at the request, order or
      direction of any of the Securityholders pursuant to the provisions of this
      Indenture, unless such Securityholders shall have offered to

                                       53
<PAGE>

      the Trustee reasonable security or indemnity against the costs, expenses
      and liabilities which might be incurred therein or thereby;

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

            (f) prior to the occurrence of any Event of Default hereunder and
      after the curing or waiving 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, consent, order, approval, appraisal, bond, debenture,
      note, coupon, security, or other paper or document unless requested in
      writing to do so by the Holders of not less than a majority in aggregate
      principal amount of the Securities of all Series affected then
      Outstanding; provided that, if the payment within a reasonable time to the
      Trustee of the costs, expenses or liabilities likely to be incurred by it
      in the making of such investigation is, in the opinion of the Trustee, not
      reasonably assured to the Trustee by the security afforded to it by the
      terms of this Indenture, the Trustee may require reasonable indemnity
      against such expenses or liabilities as a condition to proceeding; the
      reasonable expenses of every such investigation shall be paid by the
      Company or, if paid by the Trustee or any predecessor Trustee, shall be
      repaid by the Company upon demand; 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 not regularly in its employ and the Trustee shall be responsible
      for any negligent action, negligent failure to act or wilful misconduct on
      the part of any such agent or attorney.

            SECTION 6.3 TRUSTEE NOT RESPONSIBLE FOR RECITALS, DISPOSITION OF
SECURITIES OR APPLICATION OF PROCEEDS THEREOF. The recitals contained herein and
in the Securities, except the Trustee's certificate of authentication, shall be
taken as the statements of the Company and the Trustee assumes no responsibility
for the correctness of the same. The Trustee makes no representation as to the
validity or sufficiency of this Indenture or of the Securities. The Trustee
shall not be accountable for the use or application by the Company of any of the
Securities or of the proceeds thereof.

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<PAGE>

            SECTION 6.4 TRUSTEE AND AGENTS MAY HOLD SECURITIES; COLLECTIONS,
ETC. The Trustee, any Paying Agent, Security registrar, or any agent of the
Company or the Trustee, in its individual or any other capacity, may become the
owner or pledgee of Securities or Coupons with the same rights it would have if
it were not the Trustee or such agent and, subject to Sections 6.8 and 6.13, if
operative, may otherwise deal with the Company and receive, collect, hold and
retain collections from the Company with the same rights it would have if it
were not the Trustee or such agent.

            SECTION 6.5 MONEYS HELD BY TRUSTEE. Subject to the provisions of
Section 10.4 hereof, all moneys received by the Trustee shall, until used or
applied as herein provided, be held in trust for the purposes for which they
were received, but need not be segregated from other funds except to the extent
required by mandatory provisions of law. Neither the Trustee nor any agent of
the Company or the Trustee shall be under any liability for interest on any
moneys received by it hereunder.

            SECTION 6.6 COMPENSATION AND INDEMNIFICATION OF TRUSTEE AND ITS
PRIOR CLAIM. The Company covenants and agrees to pay to the Trustee from time to
time, and the Trustee shall be entitled to, reasonable compensation (which shall
not be limited by any provision of law in regard to the compensation of a
trustee of an express trust) and the Company covenants and agrees to pay or
reimburse the Trustee and each predecessor Trustee upon its request for all
reasonable expenses, disbursements and advances incurred or made by or on behalf
of it in accordance with any of the provisions of this Indenture (including the
reasonable compensation and the expenses and disbursements of its counsel and of
all agents and other persons not regularly in its employ) except any such
expense, disbursement or advance as may arise from its negligence or bad faith.
The Company also covenants to indemnify the Trustee and each predecessor 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 this Indenture or the trusts hereunder
and its duties hereunder, including the costs and expenses of defending itself
against or investigating any claim of liability in the premises. The obligations
of the Company under this Section to compensate and indemnify the Trustee and
each predecessor Trustee and to pay or reimburse the Trustee and each
predecessor Trustee for expenses, disbursements and advances shall constitute
additional indebtedness hereunder and shall survive the satisfaction and
discharge of this Indenture. Such additional indebtedness shall be a senior
claim to that of the Securities upon all property and funds held or collected by
the Trustee as

                                       55
<PAGE>

such, except funds held in trust for the benefit of the Holders of particular
Securities or the Holders of particular Coupons, and the Securities are hereby
subordinated to such senior claim. When the Trustee incurs expenses or renders
services in connection with an Event of Default specified in Section 5.1 or in
connection with Article Five hereof, the expenses (including the reasonable fees
and expenses of its counsel) and the compensation for the service in connection
therewith are intended to constitute expenses of administration under any
bankruptcy law.

            SECTION 6.7 RIGHT OF TRUSTEE TO RELY ON OFFICER'S CERTIFICATE, ETC.
Subject to Sections 6.1 and 6.2, whenever in the administration of the trusts of
this Indenture the Trustee shall deem it necessary or desirable that a matter be
proved or established prior to taking or suffering or omitting any action
hereunder, such matter (unless other evidence in respect thereof be herein
specifically prescribed) may, in the absence of negligence or bad faith on the
part of the Trustee, be deemed to be conclusively proved and established by an
Officer's Certificate delivered to the Trustee, and such certificate, in the
absence of negligence or bad faith on the part of the Trustee, shall be full
warrant to the Trustee for any action taken, suffered or omitted by it or under
the provisions of this Indenture upon the faith thereof.

            SECTION 6.8 QUALIFICATION OF TRUSTEE; CONFLICTING INTERESTS. (a) If
the Trustee has or shall acquire any conflicting interest, as defined in this
Section, it shall, within 90 days after ascertaining that it has such
conflicting interest, either eliminate such conflicting interest or resign in
the manner and with the effect specified in this Indenture.

            (b) In the event that the Trustee shall fail to comply with the
provisions of subsection (a) of this Section, the Trustee shall, within 10 days
after the expiration of such 90 day period, transmit by mail notice of such
failure to the Securityholders in the manner and to the extent provided in
Section 4.4(c) and 11.4.

            (c) For the purposes of this Section, the Trustee shall be deemed to
have a conflicting interest with respect to Securities of any Series if

                  (i) the Trustee is trustee under this Indenture with respect
      to the Outstanding Securities of any other Series or is a trustee under
      another indenture under which any other securities, or certificates of
      interest or participation in any other securities, of an Issuer are

                                       56
<PAGE>

      outstanding, unless such other indenture is a collateral trust indenture
      under which the only collateral consists of Securities issued under this
      Indenture; provided that there shall be excluded from the operation of
      this paragraph this Indenture with respect to the Securities of any Series
      other than such Series or any other indenture or indentures under which
      other securities, or certificates of interest or participation in other
      securities, of an Issuer are outstanding if (i) this Indenture is and such
      other indenture or indentures are wholly unsecured, and such other
      indenture or indentures are hereafter qualified under the Trust Indenture
      Act of 1939, unless the Commission shall have found and declared by order
      pursuant to Section 305(b) or Section 307(c) of such Trust Indenture Act
      of 1939 that differences exist between the provisions of this Indenture
      with respect to Securities of such Series and one or more other Series, or
      the provisions of this Indenture and the provisions of such other
      indenture or indentures which are so likely to involve a material conflict
      of interest as to make it necessary in the public interest or for the
      protection of investors to disqualify the Trustee from acting as such
      under this Indenture with respect to Securities of such Series and such
      other Series, or under this Indenture or such other indenture or
      indentures, or (ii) the Issuer shall have sustained the burden of proving,
      on application to the Commission and after opportunity for hearing
      thereon, that trusteeship under this Indenture with respect to Securities
      of such Series and such other Series, or under this Indenture and such
      other indenture or indentures is not so likely to involve a material
      conflict of interest as to make it necessary in the public interest or for
      the protection of investors to disqualify the Trustee from acting as such
      under this Indenture with respect to Securities of such Series and such
      other Series, or under this Indenture and such other indentures;

                  (ii) the Trustee or any of its directors or executive officers
      is an obligor upon the Securities of any Series issued under this
      Indenture or any underwriter for an Issuer;

                  (iii) the Trustee directly or indirectly controls or is
      directly or indirectly controlled by or is under direct or indirect common
      control with an Issuer or an underwriter for an Issuer;

                  (iv) the Trustee or any of its directors or executive officers
      is a director, officer, partner, employee, appointee, or representative of
      an Issuer, or of

                                       57
<PAGE>

      an underwriter (other than the Trustee itself) for an Issuer who is
      currently engaged in the business of underwriting, except that (x) one
      individual may be a director or an executive officer, or both, of the
      Trustee and a director or an executive officer, or both, of an Issuer, but
      may not be at the same time an executive officer of both the Trustee and
      an Issuer;(y) if and so long as the number of directors of the Trustee in
      office is more than nine, one additional individual may be a director or
      an executive officer, or both, of the Trustee and a director of an Issuer;
      and (z) the Trustee may be designated by an Issuer or by any underwriter
      for an Issuer to act in the capacity of transfer agent, registrar,
      custodian, Paying Agent, fiscal agent, escrow agent or depositary, or in
      any other similar capacity, or, subject to the provisions of Subsection
      (c) (i) of this Section, to act as trustee, whether under an indenture or
      otherwise;

                  (v) 10% or more of the voting securities of the Trustee is
      beneficially owned either by an Issuer or by any director, partner or
      executive officer thereof, or 20% or more of such voting securities is
      beneficially owned, collectively, by any two or more of such persons; or
      10% or more of the voting securities of the Trustee is beneficially owned
      either by an underwriter for an Issuer or by any director, partner, or
      executive officer thereof, or is beneficially owned, collectively, by any
      two or more such persons;

                  (vi) the Trustee is the beneficial owner of, or holds as
      collateral security for an obligation which is in default, (x) 5% or more
      of the voting securities or 10% or more of any other class of security of
      an Issuer, not including the Securities issued under this Indenture and
      securities issued under any other indenture under which the Trustee is
      also trustee, or (y) 10% or more of any class of security of an
      underwriter for an Issuer;

                  (vii) the Trustee is the beneficial owner of, or holds as
      collateral security for an obligation which is in default, 5% or more of
      the voting securities of any person who, to the knowledge of the Trustee,
      owns 10% or more of the voting securities of, or controls directly or
      indirectly or is under direct or indirect common control with, an Issuer;

                  (viii) the Trustee is the beneficial owner of, or holds as
      collateral security for an obligation which is in default, 10% or more of
      any class of security of any person

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<PAGE>

      who, to the knowledge of the Trustee, owns 50% or more of the voting
      securities of an Issuer; or

                  (ix) the Trustee owns on May 15 in any calendar year, in the
      capacity of executor, administrator, testamentary or inter vivos trustee,
      guardian, committee or conservator, or in any other similar capacity, an
      aggregate of 25% or more of the voting securities, or of any class of
      security, of any person, the beneficial ownership of a specified
      percentage of which would have constituted a conflicting interest under
      Section 6.8(c)(vi), (vii) or (viii). As to any such securities of which
      the Trustee acquired ownership through becoming executor, administrator or
      testamentary trustee of an estate which included them, the provisions of
      the preceding sentence shall not apply, for a period of two years from the
      date of such acquisition, to the extent that such securities included in
      such estate do not exceed 25% of such voting securities or 25% of any such
      class of securities. Promptly after May 15 in each calendar year the
      Trustee shall make a check of its holdings of such securities in any of
      the above-mentioned capacities as of such May 15. If an Issuer fails to
      make payment in full of principal of or interest on any of the Securities
      when and as the same becomes due and payable, and such failure continues
      for 30 days thereafter, the Trustee shall make a prompt check of its
      holdings of such securities in any of the above-mentioned capacities as of
      the date of the expiration of such 30-day period, and after such date,
      notwithstanding the foregoing provisions of this paragraph, all such
      securities so held by the Trustee, with sole or joint control over such
      securities vested in it, shall, but only so long as such failure shall
      continue, be considered as though beneficially owned by the Trustee for
      the purposes of subsections (c)(vi), (vii) and (viii) of this Section.

            The specification of percentages in subsections (c)(v) to (ix),
inclusive, of this Section shall not be construed as indicating that the
ownership of such percentages of the securities of a person is or is not
necessary or sufficient to constitute direct or indirect control for the
purposes of subsection (c)(iii) or (vii) of this Section.

            For the purposes of subsections (c)(vi), (vii), (viii) and (ix) of
this Section, only:

                  (i) the terms "security" and "securities" shall include only
      such securities as are generally known as corporate securities, but shall
      not include any note or other evidence of indebtedness issued to evidence
      an

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<PAGE>

      obligation to repay moneys lent to a person by one or more banks, trust
      companies, or banking firms, or any certificate of interest or
      participation in any such note or evidence of indebtedness;

                  (ii) an obligation shall be deemed to be in default when a
      default in payment of principal shall have continued for 30 days or more
      and shall not have been cured; and

                  (iii) the Trustee shall not be deemed to be the owner or
      holder of (x) any security which it holds as collateral security, as
      trustee or otherwise, for an obligation which is not in default as defined
      in clause (ii) above, or (y) any security which it holds as collateral
      security under this Indenture, irrespective of any default hereunder, or
      (z) any security which it holds as agent for collection, or as custodian,
      escrow agent, or depository, or in any similar representative capacity.

            Except as provided above, the word "security" or "securities" as
used in this Section shall mean any note, stock, treasury stock, bond,
debenture, evidence of indebtedness, certificate of interest or participation in
any profit-sharing agreement, collateral trust certificate, reorganization
certificate or subscription, transferable share, investment contract, voting
trust certificate, certificate of deposit for a security, fractional undivided
interest in oil, gas or other mineral rights, or, in general, any interest or
instrument commonly known as a "security", or any certificate of interest or
participation in, temporary or interim certificate for, receipt for, guarantee
of, or warrant or right to subscribe to or purchase, any of the foregoing.

            (d) For purposes of this Section:

                  (i) the term "underwriter" when used with reference to an
      Issuer shall mean every person who, within three years prior to the time
      as of which the determination is made, has purchased from the Issuer with
      a view to, or has offered or sold for the Issuer in connection with, the
      distribution of any security of the Issuer outstanding at such time, or
      has participated or has had a direct or indirect participation in an such
      undertaking, or has participated or has had a participation in the direct
      or indirect underwriting of any such undertaking, but such term shall not
      include a person whose interest was limited to a commission from an
      underwriter or dealer not in excess of

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<PAGE>

      the usual and customary distributor's or seller's commission;

                  (ii) the term "director" shall mean any director of a
      corporation or any individual performing similar functions with respect to
      any organization whether incorporated or unincorporated;

                  (iii) the term "person" shall mean an individual, a
      corporation, a partnership, an association, a joint-stock company, a
      trust, an unincorporated organization, or a government or political
      subdivision thereof; as used in this paragraph, the term "trust" shall
      include only a trust where the interest or interests of the beneficiary or
      beneficiaries are evidenced by a security;

                  (iv) the term "voting security" shall mean any security
      presently entitling the owner or holder thereof to vote on the direction
      or management of the affairs of a person, or any security issued under or
      pursuant to any trust, agreement or arrangement whereby a trustee or
      trustees or agent or agents for the owner or holder of such security are
      presently entitled to vote on the direction or management of the affairs
      of a person;

                  (v) the term "Issuer" shall mean any obligor upon the
      Securities; and

                  (vi) the term "executive officer" shall mean the president,
      every vice president, every trust officer, the cashier, the secretary, and
      the treasurer of a corporation, and any individual customarily performing
      similar functions with respect to any organization whether incorporated or
      unincorporated, but shall not include the chairman of the board of
      directors.

            (e) The percentages of voting securities and other securities
specified in this Section shall be calculated in accordance with the following
provisions:

                  (i) a specified percentage of the voting securities of the
      Trustee, an Issuer or any other person referred to in this Section (each
      of whom is referred to as "person" in this paragraph) means such amount of
      the outstanding voting securities of such person as entitles the holder or
      holders thereof to cast such specified percentage of the aggregate votes
      which the holders of all the outstanding voting securities of such person
      are entitled to

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<PAGE>

      cast in the direction or management of the affairs of such person;

                  (ii) a specified percentage of a class of securities of a
      person means such percentage of the aggregate amount of securities of the
      class outstanding;

                  (iii) the term "amount", when used in regard to securities,
      means the principal amount if relating to evidences of indebtedness, the
      number of shares if relating to capital shares, and the number of units if
      relating to any other kind of security;

                  (iv) the term "outstanding" means issued and not held by or
      for the account of the issuer; the following securities shall not be
      deemed outstanding within the meaning of this definition:

                        (A) securities of an issuer held in a sinking fund
            relating to securities of the issuer of the same class;

                        (B) securities of an issuer held in a sinking fund
            relating to another class of securities of the issuer, if the
            obligation evidenced by such other class of securities is not in
            default as to principal or interest or otherwise;

                        (C) securities pledged by the issuer thereof as security
            for an obligation of the issuer not in default as to principal or
            interest or otherwise; and

                        (D) securities held in escrow if placed in escrow by the
            issuer thereof;

            provided that any voting securities of an issuer shall be deemed
            outstanding if any person other than the issuer is entitled to
            exercise the voting rights thereof; and

                  (v) a security shall be deemed to be of the same class as
      another security if both securities confer upon the holder or holders
      thereof substantially the same rights and privileges; provided, that in
      the case of secured evidences of indebtedness, all of which are issued
      under a single indenture, differences in the interest rates or maturity
      dates of various Series thereof shall not be deemed sufficient to
      constitute such Series different classes, and provided, further, that, in
      the case of unsecured evidences

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<PAGE>

      of indebtedness, differences in the interest rates or maturity dates
      thereof shall not be deemed sufficient to constitute them securities of
      different classes, whether or not they are issued under a single
      indenture.

            SECTION 6.9 PERSONS ELIGIBLE FOR APPOINTMENT AS TRUSTEE. The Trustee
for each Series of Securities hereunder shall at all times be a corporation or
banking association organized and doing business under the laws of the United
States of America or of any State or the District of Columbia having a combined
capital and surplus of at least $50,000,000, and which is authorized under such
laws to exercise corporate trust powers and is subject to supervision or
examination by Federal, State or District of Columbia authority. Such
corporation shall have its principal place of business in the United States of
America, if there be such a corporation in such location willing to act upon
reasonable and customary terms and conditions. If such corporation publishes
reports of condition at least annually, pursuant to law or to the requirements
of the aforesaid supervising or examining authority, then for the purposes of
this Section, the combined capital and surplus of such corporation shall be
deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published. In case at any time the Trustee shall cease to
be eligible in accordance with the provisions of this Section, the Trustee shall
resign immediately in the manner and with the effect specified in Section 6.10.

            SECTION 6.10 RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR
TRUSTEE. (a) The Trustee, or any trustee or trustees hereafter appointed, may at
any time resign with respect to one or more or all Series of Securities by
giving written notice of resignation to the Company and by mailing notice
thereof to the Holders in the manner and to the extent provided in Section 11.4.
Upon receiving such notice of resignation, the Company shall promptly appoint a
successor trustee or trustees with respect to the applicable Series by written
instrument in duplicate, executed by authority of the Board of Directors, one
copy of which instrument shall be delivered to the resigning Trustee and one
copy to the successor trustee or trustees. If no successor trustee shall have
been so appointed with respect to any Series and have accepted appointment
within 30 days after the mailing of such notice of resignation, the resigning
trustee may petition any court of competent jurisdiction for the appointment of
a successor trustee, or any Securityholder who has been a bona fide Holder of a
Security or Securities of the applicable Series for at least six months may,
subject to the provisions of Section 5.12, on behalf of himself and all others
similarly situated, petition any such court for the appointment of, a successor

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<PAGE>

trustee. Such court may thereupon, after such notice, if any, as it may deem
proper and prescribe, appoint a successor trustee.

            (b) In case at any time any of the following shall occur:

                  (i) the Trustee shall fail to comply with the provisions of
      Section 6.8 with respect to any Series of Securities after written request
      therefor by the Company or by any Securityholder who has been a bona fide
      Holder of a Security or Securities of such Series for at least six months;
      or

                  (ii) the Trustee shall cease to be eligible in accordance with
      the provisions of Section 6.9 and shall fail to resign after written
      request therefor by the Company or by any Securityholder; or

                  (iii) the Trustee shall become incapable of acting with
      respect to any Series of the Securities, or shall be adjudged a bankrupt
      or insolvent, or a receiver or liquidator 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, the Company may remove the Trustee with respect to the
applicable Series of Securities and appoint a successor trustee for such Series
by written instrument, in duplicate, executed by order of the Board of Directors
of the Company, one copy of which instrument shall be delivered to the Trustee
so removed and one copy to the successor trustee, or, subject to the provisions
of Section 5.12, any Securityholder who has been a bona fide Holder of a
Security or Securities of such Series for at least six months may on behalf of
himself and all others similarly situated, petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
trustee with respect to such Series. Such court may thereupon, after such
notice, if any, as it may deem proper and prescribe, remove the Trustee and
appoint a successor trustee.

            (c) The Holders of a majority in aggregate principal amount of the
Securities of each Series at the time Outstanding may at any time upon 60 days'
prior written notice remove the Trustee with respect to Securities of such
Series and appoint a successor trustee with respect to the Securities of such
Series by delivering to the Trustee so removed, to the successor trustee so
appointed and to the Company the evidence provided for in

                                       64
<PAGE>

Section 7.1 of the action in that regard taken by the Securityholders.

            (d) Any resignation or removal of the Trustee with respect to any
Series and any appointment of a successor trustee with respect to such Series
pursuant to any of the provisions of this Section 6.10 shall become effective
upon acceptance of appointment by the successor trustee as provided in Section
6.11.

            SECTION 6.11 ACCEPTANCE OF APPOINTMENT BY SUCCESSOR TRUSTEE. Any
successor trustee appointed as provided in Section 6.10 shall execute and
deliver to the Company and to its predecessor Trustee an instrument accepting
such appointment hereunder, and thereupon the resignation or removal of the
predecessor Trustee with respect to all or any applicable Series shall become
effective and such successor trustee, without any further act, deed or
conveyance, shall become vested with all rights, powers, duties and obligations
with respect to such Series of its predecessor hereunder, with like effect as if
originally named as trustee for such Series hereunder; but, nevertheless, on the
written request of the Company or of the successor trustee, upon payment of its
charges then unpaid, the trustee ceasing to act shall, subject to Section 10.4,
pay over to the successor trustee all moneys at the time held by it hereunder
and shall execute and deliver an instrument transferring to such successor
trustee all such rights, powers, duties and obligations. Upon request of any
such successor trustee, the Company shall execute any and all instruments in
writing for more fully and certainly vesting in and confirming to such successor
trustee all such rights and powers. Any trustee ceasing to act shall,
nevertheless, retain a prior claim upon all property or funds held or collected
by such trustee to secure any amounts then due it pursuant to the provisions of
Section 6.6.

            If a successor trustee is appointed with respect to the Securities
of one or more (but not all) Series, the Company, the predecessor Trustee and
each successor trustee with respect to the Securities of an applicable Series
shall execute and deliver an indenture supplemental hereto which shall contain
such provisions as shall be deemed necessary or desirable to confirm that all
the rights, powers, trusts and duties of the predecessor Trustee with respect to
the Securities of any Series as to which the predecessor Trustee is not retiring
shall continue to be vested in the predecessor Trustee, and shall add to or
change any of the provisions of this Indenture as shall be necessary to provide
for or facilitate the administration of the trusts hereunder by more than one
trustee, it being understood that nothing herein or in such supplemental
indenture shall constitute such trustees co-trustees of the same trust and that
each such

                                       65
<PAGE>

trustee shall be trustee of a trust or trusts under separate indentures.

            No successor trustee with respect to any Series of Securities shall
accept appointment as provided in this Section 6.11 unless at the time of such
acceptance such successor trustee shall be qualified under the provisions of
Section 6.8 and eligible under the provisions of Section 6.9.

            Upon acceptance of appointment by any successor trustee as provided
in this Section 6.11, the Company shall give notice in the manner and to the
extent provided in Section 11.4 to the Holders of Securities of any Series for
which such successor trustee is acting as trustee at their last addresses as
they shall appear in the Security register. If the acceptance of appointment is
substantially contemporaneous with the resignation, then the notice called for
by the preceding sentence may be combined with the notice called for by Section
6.10. If the Company fails to mail such notice within ten days after acceptance
of appointment by the successor trustee, the successor trustee shall cause such
notice to be mailed at the expense of the Company.

            SECTION 6.12 MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO
BUSINESS OF TRUSTEE. 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 an corporation succeeding to the corporate trust business of the
Trustee, shall be the successor of the Trustee hereunder, provided that such
corporation shall be qualified under the provisions of Section 6.8 and eligible
under the provisions of Section 6.9, without the execution or filing of any
paper or any further act on the part of any of the parties hereto, anything
herein to the contrary notwithstanding.

            In case at the time such successor to the Trustee shall succeed to
the trusts created by this Indenture any of the Securities of any Series shall
have been authenticated but not delivered, any such successor to the Trustee may
adopt the certificate of authentication of any predecessor Trustee and deliver
such Securities so authenticated; and, in case at that time any of the
Securities of any Series shall not have been authenticated, any successor to the
Trustee may authenticate such Securities either in the name of any predecessor
Trustee hereunder or in the name of the successor Trustee; and in all such cases
such certificates shall have the full force which it is anywhere in the
Securities of such Series or in this Indenture provided that the certificate of
the Trustee shall have;

                                       66
<PAGE>

provided, that the right to adopt the certificate of authentication of any
predecessor Trustee or to authenticate Securities of any Series in the name of
any predecessor Trustee shall apply only to its successor or successors by
merger, conversion or consolidation.

            SECTION 6.13 PREFERENTIAL COLLECTION OF CLAIMS AGAINST THE COMPANY.
(a) Subject to the provisions of this Section, if the Trustee shall be or shall
become a creditor, directly or indirectly, secured or unsecured, of an Issuer
within four months prior to a default, as defined in subsection (c) of this
Section, or subsequent to such a default, then, unless and until such default
shall be cured, the Trustee shall set apart and hold in a special account for
the benefit of the Trustee individually, the Holders of the Securities, the
Holders of Coupons and the holders of other indenture securities (as defined in
this section):

            (1) an amount equal to any and all reductions in the amount due and
      owing upon any claim as such creditor in respect of principal or interest,
      effected after the beginning of such four month period and valid as
      against such Issuer and its other creditors, except any such reduction
      resulting from the receipt or disposition of any property described in
      subsection (a)(2) of this Section, or from the exercise of any right of
      set-off which the Trustee could have exercised if a petition in bankruptcy
      had been filed by or against such Issuer upon the date of such default;
      and

            (2) all property received by the Trustee in respect of any claim as
      such creditor, either as security therefor, or in satisfaction or
      composition thereof, or otherwise, after the beginning of such four month
      period, or an amount equal to the proceeds of any such property, if
      disposed of, subject, however, to the rights, if any, of such Issuer and
      its other creditors in such property or such proceeds.

Nothing herein contained, however, shall affect the right of the Trustee:

            (A) to retain for its own account (i) payments made on account of
      any such claim by any person (other than such Issuer) who is liable
      thereon, (ii) the proceeds of the bona fide sale of any such claim by the
      Trustee to a third person, and (iii) distributions made in cash,
      securities or other property in respect of claims filed against such
      Issuer in bankruptcy or receivership or in proceedings for reorganization
      pursuant to Title 11 of the United States Code or applicable state law;

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<PAGE>

            (B) to realize, for its own account, upon any property held by it as
      security for any such claim, if such property was so held prior to the
      beginning of such four month period;

            (C) to realize, for its own account, but only to the extent of the
      claim hereinafter mentioned, upon any property held by it as security for
      any such claim, if such claim was created after the beginning of such four
      month period and such property was received as security therefor
      simultaneously with the creation thereof, and if the Trustee shall sustain
      the burden of proving that at the time such property was so received the
      Trustee had no reasonable cause to believe that a default as defined in
      subsection (c) of this Section would occur within four months; or

            (D) to receive payment on any claim referred to in paragraph (B) or
      (C), against the release of any property held as security for such claim
      as provided in such paragraph (B) or (C), as the case may be, to the
      extent of the fair value of such property.

            For the purposes of paragraphs (B), (C) and (D), property
substituted after the beginning of such four month period for property held as
security at the time of such substitution shall, to the extent of the fair value
of the property released, have the same status as the property released, and, to
the extent that any claim referred to in any of such paragraphs is created in
renewal of or in substitution for or for the purpose of repaying or refunding
any pre-existing claim of the Trustee as such creditor, such claim shall have
the same status as such pre-existing claim.

            If the Trustee shall be required to account, the funds and property
held in such special account and the proceeds thereof shall be apportioned
between the Trustee, the Securityholders, the Holders of Coupons and the holders
of other indenture securities in such manner that the Trustee, such
Securityholders and the holders of other indenture securities realize, as a
result of payments from such special account and payments of dividends on claims
filed against an Issuer in bankruptcy or receivership or in proceedings for
reorganization pursuant to Title 11 of the United States Code or applicable
State law, the same percentage of their respective claims, figured before
crediting to the claim of the Trustee anything on account of the receipt by it
from such Issuer of the funds and property in such special account and before
crediting to the respective claims of the Trustee, such Securityholders and the
holders of other indenture securities, dividends on claims filed

                                       68
<PAGE>

against such Issuer in bankruptcy or receivership or in proceedings for
reorganization pursuant to Title 11 of the United States Code or applicable
State law, but after crediting thereon receipts on account of the indebtedness
represented by their respective claims from all sources other than from such
dividends and from the funds and property so held in such special account. As
used in this paragraph, with respect to any claim, the term "dividends" shall
include any distribution with respect to such claim, in bankruptcy or
receivership or in proceedings for reorganization pursuant to Title 11 of the
United States Code or applicable State law, whether such distribution is made in
cash, securities or other property, but shall not include any such distribution
with respect to the secured portion, if any, of such claim. The court in which
such bankruptcy, receivership or proceeding for reorganization is pending shall
have jurisdiction (i) to apportion between the Trustee, such Securityholders and
the holders of other indenture securities, in accordance with the provisions of
this paragraph, the funds and the property held in such special account and the
proceeds thereof, or (ii) in lieu of such apportionment, in whole or in part, to
give to the provisions of this paragraph due consideration in determining the
fairness of the distributions to be made to the Trustee, such Securityholders
and the holders of other indenture securities with respect to their respective
claims, in which event it shall not be necessary to liquidate or to appraise the
value of any securities or other property held in such special account or as
security for any such claim, or to make a specific allocation of such
distributions as between the secured and unsecured portions of such claims, or
otherwise to apply the provisions of this paragraph as a mathematical formula.

            Any Trustee who has resigned or been removed after the beginning of
such four month period shall be subject to the provisions of this subsection (a)
as though such resignation or removal had not occurred. If any Trustee has
resigned or been removed prior to the beginning of such four month period, it
shall be subject to the provisions of this subsection (a) if and only if the
following conditions exist:

                  (i) the receipt of property or reduction of claim which would
            have given rise to the obligation to account, if such Trustee had
            continued as trustee, occurred after the beginning of such four
            month period; and

                  (ii) such receipt of property or reduction of claim occurred
            within four months after such resignation or removal.

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<PAGE>

            (b) There shall be excluded from the operation of this Section a
creditor relationship arising from:

                  (1) the ownership or acquisition of securities issued under
any indenture, or any security or securities having a maturity of one year or
more at the time of acquisition by the Trustee;

                  (2) advances authorized by a receivership or bankruptcy court
of competent jurisdiction or by this Indenture for the purpose of preserving any
property which shall at any time be subject to the lien of this Indenture or of
discharging tax liens or other prior liens or encumbrances thereon, if notice of
such advance and of the circumstances surrounding the making thereof is given to
the Securityholders at the time and in the manner provided in this Indenture;

                  (3) disbursements made in the ordinary course of business in
the capacity of trustee under an indenture, transfer agent, registrar,
custodian, paying agent, fiscal agent or depositary, or other similar capacity;

                  (4) an indebtedness created as a result of services rendered
or premises rented or an indebtedness created as a result of goods or securities
sold in a cash transaction as defined in subsection (c)(3) below;

                  (5) the ownership of stock or of other securities of a
corporation organized under the provisions of Section 25(a) of the Federal
Reserve Act, as amended, which is directly or indirectly a creditor of such
Issuer; or

                  (6) the acquisition, ownership, acceptance or negotiation of
any drafts, bills of exchange, acceptances or obligations which fall within the
classification of self-liquidating paper as defined in subsection (c)(4) of this
Section.

            (c) As used in this Section:

                  (1) the term "default" shall mean any failure to make payment
in full of the principal of or interest upon any of the Securities or upon the
other indenture securities when and as such principal or interest becomes due
and payable;

                  (2) the term "other indenture securities" shall mean
securities upon which an Issuer is an obligor (as defined in the Trust Indenture
Act of 1939) outstanding under any other indenture (i) under which the Trustee
is also trustee, (ii) which

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contains provisions substantially similar to the provisions of subsection (a) of
this Section, and (iii) under which a default exists at the time of the
apportionment of the funds and property held in said special account;

                  (3) the term "cash transaction" shall mean any transaction in
which full payment for goods or securities sold is made within seven days after
delivery of the goods or securities in currency or in checks or other orders
drawn upon banks or bankers and payable upon demand;

                  (4) the term "self-liquidating paper" shall mean any draft,
bill of exchange acceptance or obligation which is made, drawn, negotiated or
incurred by the Company for the purpose of financing the purchase, processing,
manufacture, shipment, storage or sale of goods, wares or merchandise and which
is secured by documents evidencing title to, possession of, or a lien upon the
goods, wares or merchandise or the receivables or proceeds arising from the sale
of the goods, wares or merchandise previously constituting the security,
provided the security is received by the Trustee simultaneously with the
creation of the creditor relationship with the Company arising from the making,
drawing, negotiating or incurring of the draft, bill of exchange, acceptance or
obligation; and

                  (a) the term "Issuer" shall mean any obligor upon the
Securities.

            SECTION 6.14 APPOINTMENT OF AUTHENTICATING AGENT. The Trustee may
appoint an Authenticating Agent or Agents with respect to one or more Series of
Securities which shall be authorized to act on behalf of the Trustee to
authenticate Securities of such Series issued upon original issue or upon
exchange, registration of transfer or partial redemption thereof or pursuant to
Section 2.9, 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 or any other action in connection
therewith, 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 and
other action taken on behalf of the Trustee by an Authenticating Agent. Each
Authenticating Agent shall be acceptable to the Company.

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<PAGE>

            An Authenticating Agent may resign at any time by giving written
notice thereof to the Trustee and to the Company. The Trustee may at any time
terminate the agency of an Authenticating Agent by giving written notice thereof
to such Authenticating Agent and to the Company. Upon receiving such a notice of
resignation or upon such a termination, the Trustee may appoint a successor
Authenticating Agent which shall be acceptable to the Company and shall give
notice of such appointment to all Holders of Securities in the manner provided
in Section 11.4. Any successor Authentication Agent upon acceptance of its
appointment hereunder shall become vested with all the rights, powers and duties
of its predecessor hereunder, with the effect as if originally named as an
Authenticating Agent. No successor Authenticating Agent shall be appointed
unless acceptable to the Company.

            The Company agrees to pay to each Authentication Agent from time to
time reasonable compensation for its services under this Section.

            If an appointment with respect to one or more Series of Securities
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
            herein and referred to in the within-mentioned
            Indenture.

                  BankOne Trust Company, NA, as Trustee

                  By:________________________________
                        As Authenticating Agent

                  By:________________________________
                        Authorized Officer"

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                                    ARTICLE 7

                         CONCERNING THE SECURITYHOLDERS

            SECTION 7.1 EVIDENCE OF ACTION TAKEN BY SECURITYHOLDERS. (a) Any
request, demand, authorization, direction, notice, consent, waiver or other
action provided by this Indenture to be given or taken by a specified percentage
in principal amount of the Securityholders of any or all Series may be embodied
in and evidenced by one or more instruments of substantially similar tenor
signed by such specified percentage of Securityholders 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. Proof of execution of any instrument or of a writing
appointing any such agent shall be sufficient for any purpose of this Indenture
and (subject to Sections 6.1 and 6.2) conclusive in favor of the Trustee and the
Company, if made in the manner provided in this Article.

            (b) The ownership of Registered Securities shall be proved by the
Security register. With respect to any Series of Registered Securities, the
Company may, but shall not be obligated to, fix a record date for the purpose of
determining the identity of Registered Holders entitled to receive any notice or
to consent to any supplement to this Indenture or to any amendment or waiver of
any provision hereof. If a record date is fixed, only those persons who were
Registered Holders at such record date (or their duly designated proxies) shall
be entitled to receive such notice or to consent to such supplement, amendment
or waiver or to revoke any such consent previously given, whether or not such
persons continue to be Holders after such record date. Any such record date
shall not be more than 60 days prior to the first solicitation of such consent
or the date of the most recent list of Securityholders furnished to the Trustee
pursuant to Section 4.1.

            (c) The amount of Unregistered Securities held by any Person
executing any instrument or writing as a Securityholder, the numbers of such
Unregistered Securities, and the date of his holding the same may be proved by
the production of such Securities or by a certificate executed by any trust
company, bank, broker or member of a national securities exchange (wherever
situated), as depositary, if such certificate is in form satisfactory to the
Trustee, showing that at the date therein mentioned such Person had on deposit
with such depositary, or exhibited to it, the Unregistered Securities therein
described; or such facts may be proved by the certificate or affidavit of the
Person executing such instrument or writing

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<PAGE>

as a Securityholder, if such certificate or affidavit is in form satisfactory to
the Trustee. The Trustee and the Company may assume that such ownership of any
Unregistered Security continues until (i) another certificate or affidavit
bearing a later date issued in respect of the same Unregistered Security is
produced, or (ii) such Unregistered Security is produced by some other person,
or (iii) such Unregistered Security is surrendered in exchange for a Registered
Security, or (iv) such Unregistered Security has been canceled in accordance
with Section 2.10.

            SECTION 7.2 PROOF OF EXECUTION OF INSTRUMENTS. Subject to Sections
6.1 and 6.2, the execution of any instrument by a Securityholder or his agent or
proxy may be proved in accordance with such reasonable rules and regulations as
may be prescribed by the Trustee or in such manner as shall be satisfactory to
the Trustee.

            SECTION 7.3 HOLDERS TO BE TREATED AS OWNERS. The Company, the
Trustee and any Agent of the Company or the Trustee may deem and treat the
person in whose name any Security shall be registered upon the Security register
for such Series as the absolute owner of such Security (whether or not such
Security shall be overdue and notwithstanding any notation of ownership or other
writing thereon) for the purpose of receiving payment of or on account of the
principal of and interest on such Security and for all other purposes; and
neither the Company nor the Trustee nor any Agent of the Company or the Trustee
shall be affected by any notice to the contrary. All such payments so made to
any such person, or upon his order, shall be valid, and, to the extent of the
sum or sums so paid, effectual to satisfy and discharge the liability for moneys
payable upon any such Security.

            SECTION 7.4 SECURITIES OWNED BY COMPANY DEEMED NOT OUTSTANDING. In
determining whether the Holders of the requisite aggregate principal amount of
Outstanding Securities of any or all Series have concurred in any direction,
consent or waiver under this Indenture, Securities which are owned by the
Company or any other obligor on the Securities with respect to which such
determination is being made or by any person directly or indirectly controlling
or controlled by or under direct or indirect common control with the Company or
any other obligor on the Securities with respect to which such determination is
being made shall be disregarded and deemed not to be Outstanding for the purpose
of any such determination, except that for the purpose of determining whether
the Trustee shall be protected in relying on any such direction, consent or
waiver only Securities which the Trustee knows are so owned shall be so
disregarded. Securities so owned which have been pledged in good faith may be

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<PAGE>

regarded as Outstanding if the pledgee establishes to the satisfaction of the
Trustee the pledgee's right so to act with respect to such Securities and that
the pledgee is not the Company or any other obligor upon the Securities or any
person directly or indirectly controlling or controlled by or under direct or
indirect common control with the Company or any other obligor on the Securities.
In case of a dispute as to such right, the advice of counsel shall be full
protection in respect of any decision made by the Trustee in accordance with
such advice. Upon request of the Trustee, the Company shall furnish to the
Trustee promptly an Officer's Certificate listing and identifying all
Securities, if any, known by the Company to be owned or held by or for the
account of any of the above-described persons; and, subject to Sections 6.1 and
6.2, the Trustee shall be entitled to accept such Officer's Certificate as
conclusive evidence of the facts therein set forth and of the fact that all
Securities not listed therein are Outstanding for the purpose of any such
determination.

            SECTION 7.5 RIGHT OF REVOCATION OF ACTION TAKEN. At any time prior
to (but not after) the evidencing to the Trustee, as provided in Section 7.1, of
the taking of any action by the Holders of the percentage in aggregate principal
amount of the Securities of any or all Series, as the case may be, specified in
this Indenture in connection with such action, any Holder of a Security the
serial number of which is shown by the evidence to be included among the serial
numbers of the Securities the Holders of which have consented to such action
may, by filing written notice at the Corporate Trust Office and upon proof of
holding as provided in this Article, revoke such action so far as concerns such
Security. Except as aforesaid any such action taken by the Holder of any
Security shall be conclusive and binding upon such Holder and upon all future
Holders and owners of such Security and of any Securities issued in exchange or
substitution therefor, irrespective of whether or not any notation in regard
thereto is made upon any such Security. Any action taken by the Holders of the
percentage in aggregate principal amount of the Securities of any or all Series,
as the case may be, specified in this Indenture in connection with such action
shall be conclusively binding upon the Company, the Trustee and the Holders of
all the Securities affected by such action.

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                                    ARTICLE 8

                             SUPPLEMENTAL INDENTURES

            SECTION 8.1 SUPPLEMENTAL INDENTURES WITHOUT CONSENT OF
SECURITYHOLDERS. The Company, when authorized by a Board Resolution, and the
Trustee may from time to time and at any time enter into an indenture or
indentures supplemental hereto (which shall conform to the provisions of the
Trust Indenture Act of 1939 as in force at the date of the execution thereof)
for one or more of the following purposes:

            (a) to convey, transfer, assign, mortgage or pledge to the Trustee
as security for the Securities of one or more Series any property or assets;

            (b) to evidence the succession of another corporation to the
Company, or successive successions, and the assumption by the successor
corporation of the covenants, agreements and obligations of the Company pursuant
to Article Nine;

            (c) to add to the covenants of the Company such further covenants,
restrictions, conditions or provisions as its Board of Directors and the Trustee
shall consider to be for the protection of the Holders of Securities, and to
make the occurrence, or the occurrence and continuance, of a default in any such
additional covenants, restrictions, conditions or provisions an Event of Default
permitting the enforcement of all or any of the several remedies provided in
this Indenture as herein set forth; provided, that in respect of any such
additional covenant, restriction, condition or provision such supplemental
indenture may provide for a particular period of grace after default (which
period may be shorter or longer than that allowed in the case of other defaults)
or may provide for an immediate enforcement upon such an Event of Default or may
limit the remedies available to the Trustee upon such an Event of Default or may
limit the right of the Holders of a majority in aggregate principal amount of
the Securities of such Series to waive such an Event of Default;

            (d) to cure any ambiguity or to correct or supplement any provision
contained herein or in any supplemental indenture which may be defective or
inconsistent with any other provision contained herein or in any supplemental
indenture; or to make such other provisions in regard to matters or questions
arising under this Indenture or under any supplemental indenture as the Board of
Directors may deem necessary or desirable and which shall not materially and
adversely affect the interests of the Holders of the Securities or the Holders
of any Coupons;

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<PAGE>

            (e) to establish the form or terms of Securities of any Series as
permitted by Sections 2.1 and 2.3; or

            (f) 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 the one trustee, pursuant to the requirements of Section
6.11.

            The Trustee is hereby authorized to join with the Company in the
execution of any such supplemental indenture, to make any further appropriate
agreements and stipulations which may be therein contained and to accept the
conveyance, transfer, assignment, mortgage or pledge of any property thereunder,
but the Trustee 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.

            Any supplemental indenture authorized by the provisions of this
Section may be executed without the consent of the Holders of any of the
Securities at the time Outstanding, notwithstanding any of the provisions of
Section 8.2.

            SECTION 8.2 SUPPLEMENTAL INDENTURES WITH CONSENT OF SECURITYHOLDERS.
With the consent (evidenced as provided in Article Seven) of the Holders of a
majority of the aggregate principal amount of the Securities at the time
Outstanding of all Series affected by such supplemental indenture (treated as
one class), the Company, when authorized by a Board Resolution, and the Trustee
may, from time to time and at any time, enter into an indenture or indentures
supplemental hereto (which shall conform to the provisions of the Trust
Indenture Act of 1939 as in force at the date of execution thereof) for the
purpose of adding any provisions to or changing in any manner or eliminating any
of the provisions of this Indenture or of any supplemental indenture or of
modifying in any manner the rights of the Holders of the Securities of each such
Series; provided, that no such supplemental indenture shall (a) extend the final
maturity of any Security, or reduce the principal amount thereof, or reduce the
rate or extend the time of payment of interest thereon, or reduce any amount
payable on redemption thereof, or reduce the amount of principal of an Original
Issue Discount Security that would be due and payable upon an acceleration of
the maturity thereof pursuant to Section 5.1 or the amount provable in
bankruptcy pursuant to Section 5.2, or impair or affect the right of any
Securityholder to institute suit for payment thereof or, if the Securities
provide therefor, any right of repayment at the option

                                       77
<PAGE>

of the Securityholder without the consent of the Holder of the Security so
affected, or (b) reduce the aforesaid percentage of Securities of any Series,
the consent of the Holders of which is required for any such supplemental
indenture, without the consent of the Holder of the Security so affected.

            Upon the request of the Company, accompanied by a copy of a Board
Resolution authorizing the execution of any such supplemental indenture, and
upon the filing with the Trustee of evidence of the consent of Securityholders
as aforesaid and other documents, if any, required by Section 7.1, the Trustee
shall join with the Company in the execution of such supplemental indenture
unless such supplements indenture affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise, in which case the Trustee may in
its discretion, but shall not be obligated to, enter into such supplemental
indenture.

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

            Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of this Section, the Company
shall give notice in the manner and to the extent provided in Section 11.4 to
the Holders of Securities of each Series affected thereby at their addresses as
they shall appear on the registry books of the Company, setting forth in general
terms the substance of such supplemental indenture. Any failure of the Company
to mail such notice, or any defect therein, shall not, however, in any way
impair or affect the validity of any such supplemental indenture.

            SECTION 8.3 EFFECT OF SUPPLEMENTAL INDENTURE. Upon the execution of
any supplemental indenture pursuant to the provisions hereof, this Indenture
shall be and be deemed to be modified and amended in accordance therewith and
the respective rights, limitations of rights, obligations, duties and immunities
under this Indenture of the Trustee, the Company and the Holders of Securities
of each Series and Holders of Coupons affected thereby shall thereafter be
determined, exercised and enforced hereunder subject in all respects to such
modifications and amendments, and all the terms and conditions of any such
supplemental indenture shall be and be deemed to be part of the terms and
conditions of this Indenture for any and all purposes.

            SECTION 8.4 DOCUMENTS TO BE GIVEN TO TRUSTEE. The Trustee, subject
to the provisions of Sections 6.1 and 6.2, may

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<PAGE>

receive an Officer's Certificate and an Opinion of Counsel as conclusive
evidence that any supplemental indenture executed pursuant to this Article Eight
complies with the applicable provisions of this Indenture.

            SECTION 8.5 NOTATION ON SECURITIES IN RESPECT OF SUPPLEMENTAL
INDENTURES. Securities of any Series authenticated and delivered after the
execution of any supplemental indenture pursuant to the provisions of this
Article may bear, upon the direction of the Company, a notation in form
satisfactory to the Trustee for such Series as to any matter provided for by
such supplemental indenture or as to any action taken at any such meeting. If
the Company or the Trustee shall so determine, new Securities of any Series so
modified as to conform, in the opinion of the Trustee and the Board of
Directors, to any modification of this Indenture contained in any such
supplemental indenture may be prepared by the Company, authenticated by the
Trustee and delivered in exchange for the Securities of such Series then
outstanding.

                                    ARTICLE 9

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE

            SECTION 9.1 COMPANY MAY CONSOLIDATE, ETC., ON CERTAIN TERMS. The
Company covenants that it will not merge or consolidate with any other
corporation or sell or convey all or substantially all of its assets to any
Person, unless (i) either the Company shall be the continuing corporation, or
the successor corporation or the Person which acquires by sale or conveyance
substantially all the assets of the Company (if other than the Company) shall be
a corporation organized under the laws of the United States of America or any
State thereof and shall expressly assume the due and punctual payment of the
principal of and interest on all the Securities, according to their tenor, and
the due and punctual performance and observance of all of the covenants and
conditions of this Indenture to be performed or observed by the Company, by
supplemental indenture satisfactory to the Trustee, executed and delivered to
the Trustee by such corporation, and (ii) the Company or such successor
corporation, as the case may be, shall not, immediately after such merger or
consolidation, or such sale or conveyance, be in default in the performance of
any such covenant or condition.

            SECTION 9.2 SUCCESSOR CORPORATION SUBSTITUTED. In case of any such
consolidation, merger, sale or conveyance, and following such an assumption by
the successor corporation, such successor corporation shall succeed to and be
substituted for the

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<PAGE>

Company, with the same effect as if it had been named herein. Such successor
corporation may cause to be signed, and may issue either in its own name or in
the name of the Company prior to such succession any or all of the Securities
issuable hereunder which theretofore shall not have been signed by the Company
and delivered to the Trustee; and, upon the order of such successor corporation
instead of the Company and subject to all the terms, conditions and limitations
in this Indenture prescribed, the Trustee shall authenticate and shall deliver
any Securities which previously shall have been signed and delivered by the
officers of the Company to the Trustee for authentication, and any Securities
which such successor corporation thereafter shall cause to be signed and
delivered to the Trustee for that purpose. All of the Securities so issued shall
in all respects have the same legal rank and benefit under this Indenture as the
Securities theretofore or thereafter issued in accordance with the terms of this
Indenture as though all of such Securities had been issued at the date of the
execution hereof.

            In case of any such consolidation, merger, sale or conveyance such
changes in phraseology and form (but not in substance) may be made in the
Securities thereafter to be issued as may be appropriate.

            In the event of any such sale or conveyance (other than a conveyance
by way of lease) the Company or any successor corporation which shall
theretofore have become such in the manner described in this Article shall be
discharged from all obligations and covenants under this Indenture and the
Securities and may be liquidated and dissolved.

            SECTION 9.3 OPINION OF COUNSEL TO TRUSTEE. The Trustee, subject to
the provisions of Sections 6.1 and 6.2, may receive an Opinion of Counsel,
prepared in accordance with Section 11.5, as conclusive evidence that any such
consolidation, merger, sale or conveyance, and any such assumption, and any such
liquidation or dissolution, complies with the applicable provisions of this
Indenture.

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                                   ARTICLE 10

            SATISFACTION AND DISCHARGE OF INDENTURE; UNCLAIMED MONEYS

            SECTION 10.1 SATISFACTION AND DISCHARGE OF INDENTURE. (A) If at any
time (a) the Company shall have paid or caused to be paid the principal of and
interest on all the Securities of any Series and Coupons, if any, appertaining
thereto Outstanding hereunder (other than Securities and Coupons which have been
destroyed, lost or stolen and which have been replaced or paid as provided in
Section 2.9) as and when the same shall have become due and payable, or (b) the
Company shall have delivered to the Trustee for cancellation all Securities of
any Series and Coupons theretofore authenticated (other than any Securities of
such Series and Coupons which have been destroyed, lost or stolen and which
shall have been replaced or paid as provided in Section 2.9) or (c)(i) all the
Securities of such Series and Coupons not theretofore delivered to the Trustee
for cancellation shall have become due and payable, or are by their terms to
become due and payable within one year or are to be called for redemption within
one year under arrangements satisfactory to the Trustee for the giving of notice
of redemption, and (ii) the Company shall have irrevocably deposited or caused
to be deposited with the Trustee as trust funds the entire amount in cash (other
than moneys repaid by the Trustee or any Paying Agent to the Company in
accordance with Section 10.4) or U.S. Government Obligations, as defined below,
maturing as to principal and interest in such amounts and at such times as will
ensure the availability of cash sufficient to pay at maturity or upon redemption
all Securities of such Series and Coupons (other than any Securities of such
Series and Coupons which shall have been destroyed, lost or stolen and which
shall have been replaced or paid as provided in Section 2.9) not theretofore
delivered to the Trustee for cancellation, including principal and interest due
or to become due to such date of maturity as the case may be, and if, in any
such case, the Company shall also pay or cause to be paid all other sums payable
hereunder by the Company with respect to Securities of such Series and Coupons,
then this Indenture shall cease to be of further effect with respect to
Securities of such Series and Coupons (except as to (i) rights of registration
of transfer and exchange, and the Company's right of optional redemption, (ii)
substitution of mutilated, defaced, destroyed, lost or stolen Securities and
Coupons, (iii) rights of Holders to receive payments of principal thereof and
interest thereon upon the original stated due dates therefor (but not upon
acceleration) and remaining rights of the Holders to receive mandatory sinking
fund payments, if any, (iv) the rights, obligations and immunities of the
Trustee hereunder and (v) the rights of the Securityholders of such Series as
beneficiaries

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hereof with respect to the property so deposited with the Trustee payable to all
or any of them), and the Trustee, on demand of the Company accompanied by an
Officer's Certificate and an Opinion of Counsel and at the cost and expense of
the Company, shall execute proper instruments acknowledging such satisfaction of
and discharging this Indenture with respect to such Series; provided, that the
rights of Holders of the Securities and Holders of Coupons to receive amounts in
respect of principal of and interest on the Securities and Coupons held by them
shall not be delayed longer than required by then applicable mandatory rules or
policies of any securities exchange upon which the Securities are listed. The
Company agrees to reimburse the Trustee for any costs or expenses thereafter
reasonably and properly incurred and to compensate the Trustee for any services
thereafter reasonably and properly rendered by the Trustee in connection with
this Indenture, the Securities of such Series and Coupons.

            (B) In addition to the provisions of Section 10.1(A), the Company
may terminate its obligations under the Securities of any Series and this
Indenture with respect to such Series, except those obligations referred to in
the penultimate paragraph of this Section 10.1, if the Company has irrevocably
deposited or caused to be deposited with the Trustee, under the terms of an
irrevocable trust agreement in form and substance satisfactory to the Trustee,
as trust funds in trust solely for the benefit of the Securityholders of such
Series for that purpose, (i) cash or (ii) direct noncallable obligations of, or
noncallable obligations guaranteed by, the United States or an agency thereof
for the payment of which guarantee or obligation the full faith and credit of
the United States is pledged ("U.S. Government Obligations"), or a combination
thereof, maturing as to principal and interest in such amounts and at such times
as are sufficient, without consideration of any reinvestment of such principal
or interest, to pay the principal of and interest on the outstanding Securities
of such Series and Coupons to maturity or redemption, as the case may be,
provided that the Trustee shall have been irrevocably instructed to apply such
money or the proceeds of such U.S. Government Obligations to the payment of said
principal of and interest on the Outstanding Securities and Coupons of such
Series; provided that:

            (a) such deposit shall not cause the Trustee with respect to the
Securities of that Series to have a conflicting interest as defined in Section
6.8 and for purposes of the Trust Indenture Act with respect to the Securities
of any Series;

            (b) such deposit will not result in a breach or violation of, or
constitute a default under, this Indenture or

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any other agreement or instrument to which the Company is a party or by which it
is bound; and

            (c) no Event of Default under Section 5.1(a), 5.1(b) or 5.1(c), or
event which with the lapse of time would become an Event of Default with respect
to the Securities of that Series shall have occurred and be continuing on the
date of such deposit, and no Event of Default under Section 5.1(f) or Section
5.1(g) or event which with the giving of notice or lapse of time, or both, would
become an Event of Default under Section 5.1(f) or Section 5.1(g) shall have
occurred and be continuing on the 91st day after such date of deposit.

            Such irrevocable trust agreement shall include, among other things,
provision for (1) payment of the principal of and interest on the Securities of
such Series and Coupons when due (by redemption, sinking fund payments or
otherwise), (2) the payment of the expenses of the Trustee incurred or to be
incurred in connection with carrying out such trust provisions, (3) rights of
registration, transfer, substitution and exchange of Securities of such Series
and Coupons in accordance with the terms stated in this Indenture and (4)
continuation of the rights and obligations and immunities of the Trustee as
against the Securityholders of such Series as stated in this Indenture.

            Notwithstanding the first paragraph of this Section 10.1(B), the
Company's obligations in Sections 2.8, 2.9, 3.1, 3.2, 5.1, 6.6, 6.10, 10.4 and
10.5 shall survive until the Securities of such Series and Coupons, if any, are
no longer Outstanding; provided, however, that the Company's obligations in
Section 5.1 shall survive only with respect to Events of Default as defined in
Sections 5.1(a), 5.1(b), and 5.1(c). Thereafter, the Company's obligations in
Sections 6.6, 10.4 and 10.5 shall survive.

            After any such irrevocable deposit, accompanied by an Officer's
Certificate which shall state that the provisions of the first two paragraphs of
this Section 10.1(B) have been complied with, and upon delivery by the Company
to the Trustee of an Opinion of Counsel to the effect that Securityholders of
such Series will not recognize income, gain or loss for Federal income tax
purposes as a result of such deposit and discharge and will be subject to
Federal income tax on the same amount and in the same manner and at the same
time as would have been the case if such deposit and discharge had not occurred,
then the Company shall be discharged of its obligations under the Securities of
such Series and this Indenture with respect to such Series except for those
surviving obligations specified above, and the Trustee upon request shall
acknowledge in writing such discharge. In

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addition, if the Securities of that Series are then listed on the New York Stock
Exchange, Inc., the Company shall have delivered to the Trustee an Opinion of
Counsel to the effect that such deposit, deficience and discharge will not cause
such Securities to be delisted. Prior to the delivery of such acknowledgment,
the Trustee may require the Company to deliver to it an Officer's Certificate
and Opinion of Counsel, each stating that all conditions precedent provided for
herein relating to the deposit and discharge contemplated by this provision have
been complied with, and the Trustee may also require that the Opinion of Counsel
shall also state that such deposit does not violate applicable law.

            SECTION 10.2 APPLICATION BY TRUSTEE OF FUNDS DEPOSITED FOR PAYMENT
OF SECURITIES. Subject to Section 10.4, all moneys deposited with the Trustee
pursuant to Section 3.8 or 10.1 shall be held in trust and applied by it to the
payment, either directly or through any Paying Agent (including the Company
acting as its own Paying Agent), to the Holders of the particular Securities of
such Series and any Coupons appertaining thereto for the payment or redemption
of which such moneys have been deposited with the Trustee, of all sums due and
to become due thereon for principal and interest; but such money need not be
segregated from other funds except to the extent required by law.

            SECTION 10.3 REPAYMENT OF MONEYS HELD BY PAYING AGENT. In connection
with the satisfaction and discharge of this Indenture with respect to Securities
of any Series or Coupons, all moneys then held by any Paying Agent under the
provisions of this Indenture with respect to such Series of Securities or
Coupons shall, upon demand of the Company, be repaid to it or paid to the
Trustee and thereupon such Paying Agent shall be released from all further
liability with respect to such moneys.

            SECTION 10.4 RETURN OF UNCLAIMED MONEYS HELD BY TRUSTEE AND PAYING
AGENT. Any moneys deposited with or paid to the Trustee or any Paying Agent for
the payment of the principal of or interest on any Security of any Series or
Coupons and not applied but remaining unclaimed for two years after the date
upon which such principal or interest shall have become due and payable, shall,
upon the written request of the Company and unless otherwise required by
mandatory provisions of applicable escheat or abandoned or unclaimed property
law, be repaid to the Company by the Trustee for such Series or such Paying
Agent, and the Holder of the Security of such Series or Holders of Coupons
appertaining thereto shall, unless otherwise required by mandatory provisions of
applicable escheat or abandoned or unclaimed property laws, thereafter look only
to the Company for any payment which such Holder may be entitled to collect, and
all

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liability of the Trustee or any Paying Agent with respect to such moneys shall
thereupon cease.

            SECTION 10.5 REINSTATEMENT OF COMPANY'S OBLIGATIONS. If the Trustee
is unable to apply any funds or U.S. Government Obligations in accordance with
Section 3.8 or 10.1 by reason of any legal proceeding, or by reason of any order
or judgment of any court or governmental authority enjoining, restraining or
otherwise prohibiting such application, the Company's obligations under this
Indenture and the Securities of any Series for which such application is
prohibited shall be revived and reinstated as if no deposit had occurred
pursuant to Section 3.8 or 10.1 until such time as the Trustee is permitted to
apply all such funds or U.S. Government Obligations in accordance with Section
3.8 or 10.1; provided, however, that if the Company has made any payment of
interest on or principal of any of such Securities or Coupons because of the
reinstatement of its obligations, the Company shall be subrogated to the rights
of the Securityholders of such Securities to receive such payment from the funds
or U.S. Government Obligations held by the Trustee.

                                   ARTICLE 11

                            MISCELLANEOUS PROVISIONS

            SECTION 11.1 INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS OF
COMPANY EXEMPT FROM INDIVIDUAL LIABILITY. No recourse under or upon any
obligation, covenant or agreement contained in this Indenture, in any Security
or Coupon appertaining thereto, or because of any indebtedness evidenced
thereby, shall be had against any incorporator, as such, or against any past,
present or future stockholder, officer or director, as such of the Company or of
any successor, either directly or through the Company or any successor, under
any rule of law, statute or constitutional provision or by the enforcement of
any assessment or by any legal or equitable proceeding or otherwise, all such
liability being expressly waived and released by the acceptance of the
Securities by the Holders thereof and as part of the consideration for the issue
of the Securities.

            SECTION 11.2 PROVISIONS OF INDENTURE FOR THE SOLE BENEFIT OF PARTIES
AND SECURITYHOLDERS. Nothing in this Indenture or in the Securities, expressed
or implied, shall give or be construed to give to any Person, firm or
corporation, other than the parties hereto, any Paying Agent and their
successors hereunder and the Holders of the Securities and Coupons, if any, any
legal or equitable right, remedy or claim under this

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Indenture or under any covenant or provision herein contained, all such
covenants and provisions being for the sole benefit of the parties hereto and
their successors and of the Holders of the Securities.

            SECTION 11.3 SUCCESSORS AND ASSIGNS OF COMPANY BOUND BY INDENTURE.
All the covenants, stipulations, promises and agreements in this Indenture
contained by or on behalf of the Company shall bind its successors and assigns,
whether so expressed or not.

            SECTION 11.4 NOTICES AND DEMANDS ON COMPANY, TRUSTEE AND
SECURITYHOLDERS. Any notice or demand which by any provision of this Indenture
is required or permitted to be given or served by the Trustee, by the Holders of
Securities, or by the Holders of Coupons to or on the Company may be given or
served by being deposited postage prepaid, first class mail (except as otherwise
specifically provided herein) addressed (until another address of the Company is
filed by the Company with the Trustee) to Enhance Financial Services Group Inc.,
335 Madison Avenue, New York, NY 10017, Attention: General Counsel, except that
any notices required or permitted to be given under Section 5.1 hereof shall be
given or served by registered or certified mail only. Any notice, direction,
request or demand by the Company or any Securityholder to or upon the Trustee
shall be deemed to have been sufficiently given or made, for all purposes, if
given or made at the Corporate Trust Office.

            Where this Indenture provides for notice to Holders of any event,
(1) if any of the Securities affected by such event are Registered Securities,
such notice shall be sufficiently given (unless otherwise herein expressly
provided) if in writing and mailed by first-class mail, postage prepaid to such
Registered Holders as their names and addresses appear in the Security register
within the time prescribed and (2) if any of the Securities affected by such
event are Unregistered Securities, such notice shall be sufficiently given
(unless otherwise herein expressly provided) if published once in a newspaper,
in an official language of the country of publication or in English, customarily
published on each Business Day, and of general circulation in New York, New York
and London, England and in such other city or cities as may be specified in such
Securities within the time prescribed. Where successive notices are required in
respect of Unregistered Securities, such notices may be made in the same or in
different newspapers, each meeting the foregoing requirements in the same city
on successive Business Days. 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

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<PAGE>

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 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, and any notice which is mailed in the manner herein provided
shall be conclusively presumed to have been duly given.

            In case, by reason of the suspension of or irregularities in regular
mail service, it shall be impracticable to mail notice to the Company and
Securityholders when such notice is required to be given pursuant to any
provision of this Indenture, then any manner of giving such notice as shall be
satisfactory to the Trustee shall be deemed to be a sufficient giving of such
notice.

            SECTION 11.5 OFFICER'S CERTIFICATES AND OPINIONS OF COUNSEL;
STATEMENTS TO BE CONTAINED THEREIN. Upon any application or demand by the
Company to the Trustee to take any action under any of the provisions of this
Indenture, the Company shall furnish to the Trustee an Officer's Certificate
stating that all conditions precedent provided for in this Indenture relating to
the proposed action have been complied with and an Opinion of Counsel stating
that in the opinion of such counsel all such conditions precedent have been
complied with, except that in the case of any such application or demand as to
which the furnishing of such documents is specifically required by any provision
of this Indenture relating to such particular application or demand, no
additional certificate or opinion need be furnished.

            Each certificate or opinion provided for in this Indenture and
delivered to the Trustee with respect to compliance with a condition or covenant
provided for in this Indenture shall include (a) a statement that the person
making such certificate or opinion has read such covenant or condition, (b) 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, (c) a statement that, in the opinion of such person, he has made such
examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenant or condition has been
complied with and (d) a statement as to whether or not, in the opinion of such
person, such condition or covenant has been complied with.

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<PAGE>

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

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

            Any certificate or opinion of any independent firm of public
accountants filed with the Trustee shall contain a statement that such firm is
independent.

            SECTION 11.6 PAYMENTS DUE ON SATURDAYS, SUNDAYS AND HOLIDAYS. If the
date of maturity of interest on or principal or premium, if any, of the
Securities of any Series or Coupons appertaining thereto or the date fixed for
redemption or repayment of any such Security or Coupon shall not be a Business
Day, then payment of interest, principal or premium if any, need not be made on
such date, but may be made on the next succeeding Business Day with the same
force and effect as if made on the date of maturity or the date fixed for
redemption, and no interest shall accrue for the period after such date.

            SECTION 11.7 CONFLICT OF ANY PROVISION OF INDENTURE WITH TRUST
INDENTURE ACT OF 1939. If and to the extent that any provision of this Indenture
limits, qualifies or conflicts with another provision included in this Indenture
which is required to be included herein by any of Sections 310 to 317,
inclusive, of

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the Trust Indenture Act of 1939, such required provision shall control.

            SECTION 11.8 NEW YORK LAW TO GOVERN. THIS INDENTURE AND EACH
SECURITY SHALL BE DEEMED TO BE A CONTRACT UNDER THE LAWS OF THE STATE OF NEW
YORK, AND FOR ALL PURPOSES SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF
SUCH STATE.

            SECTION 11.9 COUNTERPARTS. This Indenture may be executed in any
number of counterparts, each of which shall be an original; but such
counterparts shall together constitute but one and the same instrument.

            SECTION 11.10 EFFECT OF HEADINGS. The Article and Section headings
herein and the Table of Contents are for convenience only and shall not affect
the construction hereof.

            SECTION 11.11 DETERMINATION OF PRINCIPAL AMOUNT. In determining
whether the Holders of the requisite principal amount of outstanding Securities
of any Series have given any request, demand, authorization, direction, notice,
consent or waiver hereunder, or whether sufficient funds are available for
redemption or for any other purpose, the principal amount of an Original Issue
Discount Security that shall be deemed to be outstanding for such purposes shall
be the amount of the principal thereof that would be due and payable as of the
date of such determination upon a declaration of acceleration of the maturity
thereof pursuant to Section 5.1 and the principal amount of any Securities
denominated in a Foreign Currency or ECU that shall be deemed to be outstanding
for such purposes shall be determined by converting the Foreign Currency or the
specified amount of each Component Currency into Dollars at the Market Exchange
Rate as of the date of such determination.

                                   ARTICLE 12

                   REDEMPTION OF SECURITIES AND SINKING FUNDS

            SECTION 12.1  APPLICABILITY OF ARTICLE.  The provisions
of this Article shall be applicable to the Securities of any Series which are
redeemable before their maturity or to any sinking fund for the retirement of
Securities of a Series except as otherwise specified as contemplated by Section
2.3 for Securities of such Series.

            SECTION 12.2 NOTICE OF REDEMPTION; PARTIAL REDEMPTIONS. Notice of
redemption to the Holders of Securities of any Series to be redeemed as a whole
or in part at the option

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of the Company shall be given by giving notice of such redemption as provided in
Section 11.4, at least 30 days and not more than 60 days prior to the date fixed
for redemption to such Holders of Securities of such Series. Failure to give
notice by mail, or any defect in the notice to the Holder of any Security of a
Series designated for redemption as a whole or in part shall not affect the
validity of the proceedings for the redemption of any other Security of such
Series.

            The notice of redemption to each such Holder shall specify the date
fixed for redemption, the redemption price, the place or places of payment, that
payment will be made upon presentation and surrender of such Securities, and
that, unless otherwise specified in such notice, Coupon Securities, if any,
surrendered for payment must be accompanied by all Coupons maturing subsequent
to the redemption date, failing which the amount of any such missing Coupon or
Coupons will be deducted from the sum due for payment, that such redemption is
pursuant to the mandatory or optional sinking fund, or both, if such be the
case, that interest accrued to the date fixed for redemption will be paid as
specified in such notice and that on and after said date interest thereon or on
the portions thereof to be redeemed will cease to accrue and that, if less than
all of the Outstanding Securities of a Series are to be redeemed, the
identification and principal amount of the Securities to be redeemed. In case
any Security of a Series is to be redeemed in part, the notice of redemption
shall state the portion of the principal amount thereof to be redeemed and shall
state that on and after the date fixed for redemption, upon surrender of such
Security, a new Security or Securities of such Series in principal amount equal
to the unredeemed portion thereof will be issued.

            The notice of redemption of Securities of any Series to be redeemed
at the option 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.

            On or prior to the redemption date specified in the notice of
redemption given as provided in this Section, the Company will deposit with the
Trustee or with one or more paying agents (or, if the Company is acting as its
own paying agent, set aside, segregate and hold in trust as provided in Section
3.4) an amount of money sufficient to redeem on the redemption date all the
Securities of such Series so called for redemption at the appropriate redemption
price, together with accrued interest to the date fixed for redemption. If less
than all the Outstanding Securities of a Series are to be redeemed, the Company
will deliver to the Trustee at least 60 days prior to the date fixed

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for redemption an Officer's Certificate stating the aggregate principal amount
of Securities to be redeemed.

            If less than all the Securities of a Series are to be redeemed, the
Trustee shall select, in such manner as it shall deem appropriate and fair,
Securities of such Series to be redeemed in whole in part. Securities may be
redeemed in part in multiples equal to the minimum authorized denomination for
Securities of such Series or any multiple thereof. The Trustee shall promptly
notify the Company in writing of the Securities of such Series selected for
redemption and, in the case of any Securities of such Series 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 of any Series shall relate,
in the case of any Security redeemed or to be redeemed only in part, to the
portion of the principal amount of such Security which has been or is to be
redeemed.

            SECTION 12.3 PAYMENT OF SECURITIES CALLED FOR REDEMPTION. If notice
of redemption has been given as above provided, the Securities or portions of
Securities specified in such notice shall become due and payable on the date and
at the place stated in such notice at the applicable redemption price together
with interest accrued to the date fixed for redemption, and on and after said
date (unless the Company shall default in the payment of such Securities at the
redemption price, together with interest accrued to said date) interest on the
Securities or portions of Securities so called for redemption shall cease to
accrue and, except as provided in Sections 6.5 and 10.4, such Securities shall
cease from and after the date fixed for redemption to be entitled to any benefit
or security under this Indenture, and the Holders thereof shall have no right in
respect of such Securities except the right to receive the redemption price
thereof and unpaid interest to the date fixed for redemption. On presentation
and surrender of such Securities at a place of payment specified in said notice,
said Securities or the specified portions thereof shall be paid and redeemed by
the Company at the applicable redemption price, together with interest accrued
thereon to the date fixed for redemption; provided that any semiannual payment
of interest on Registered Securities becoming due on the date fixed for
redemption shall be payable to the Holders of such Securities registered as such
on the relevant record date subject to the terms and provisions of Section 2.7
hereof.

            If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal shall, until paid or duly
provided for, bear interest from the date

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<PAGE>

fixed or redemption at the rate of interest borne by the Security.

            Upon presentation of any Security redeemed in part only and the
Coupons appertaining thereto, the Company shall execute and the Trustee shall
authenticate and deliver to or on the order of the Holder thereof, at the
expense of the Company, a new Security or Securities and the Coupons
appertaining thereto, of authorized denominations, in principal amount equal to
the unredeemed portion of the Security so presented.

            SECTION 12.4 EXCLUSION OF CERTAIN SECURITIES FROM ELIGIBILITY FOR
SELECTION FOR REDEMPTION. Securities shall be excluded from eligibility for
selection for redemption if they are identified by registration and certificate
number in a written statement signed by an authorized officer of the Company and
delivered to the Trustee at least 60 days prior to the last date on which notice
of redemption may be given as being owned of record and beneficially by, and not
pledged or hypothecated by, either (a) the Company or (b) an entity specifically
identified in such written statement directly or indirectly controlling or
controlled by or under direct or indirect common control with the Company.

            SECTION 12.5 MANDATORY AND OPTIONAL SINKING FUNDS. 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." The
date on which a sinking fund payment is to be made is herein referred to as the
"sinking fund payment date."

            In lieu of making all or any part of any mandatory sinking fund
payment with respect to any Series of Securities in cash, the Company may at its
option (a) deliver to the Trustee Securities of such Series theretofore
purchased or otherwise acquired (except upon redemption pursuant to the
mandatory sinking fund) by the Company or receive credit for Securities of such
Series (not previously so credited) theretofore purchased or otherwise acquired
(except as aforesaid) by the Company and delivered to the Trustee for
cancellation pursuant to Section 2.10, (b) receive credit for optional sinking
fund payments (not previously so credited) made pursuant to this Section, or (c)
receive credit for Securities of such Series (not previously so credited)
redeemed by the Company through any optional redemption provision contained in
the terms of such Series. Securities so delivered or credited shall be received
or credited by the

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Trustee at the sinking fund redemption price specified in such Securities.

            On or before the sixtieth day next preceding each sinking fund
payment date for any Series, the Company will deliver to the Trustee an
Officer's Certificate (a) specifying the portion of the mandatory sinking fund
payment to be satisfied by payment of cash and the portion to be satisfied by
credit of Securities of such Series, (b) stating that none of the Securities of
such Series has theretofore been so credited, (c) stating that no defaults in
the payment of interest or Events of Default with respect to such Series have
occurred (which have not been waived or cured) and are continuing, (d) stating
whether or not the Company intends to exercise its right to make an optional
sinking fund payment with respect to such Series and, if so, specifying the
amount of such optional sinking fund payment which the Company intends to pay on
or before the next succeeding sinking fund payment date and (e) specifying such
sinking fund payment date. Any Securities of such Series to be credited and
required to be delivered to the Trustee in order for the Company to be entitled
to credit therefor as aforesaid which have not theretofore been delivered to the
Trustee shall be delivered for cancellation pursuant to Section 2.10 to the
Trustee with such written statement (or reasonably promptly thereafter if
acceptable to the Trustee). Such written statement shall be irrevocable and upon
its receipt by the Trustee the Company shall become unconditionally obligated to
make all the cash payments or payments therein referred to, if any, on or before
the next succeeding sinking fund payment date. Failure of the Company, on or
before any such sixtieth day to deliver such written statement and Securities
specified in this paragraph, if any, shall not constitute a default but shall
constitute, on and as of such date, the irrevocable election of the Company (i)
that the mandatory sinking fund payment for such Series due on the next
succeeding sinking fund payment date shall be paid entirely in cash without the
option to deliver or credit Securities of such Series in respect thereof and
(ii) that the Company will make no optional sinking fund payment with respect to
such Series as provided in this Section.

            If the sinking fund payment or payments (mandatory or optional or
both) to be made in cash on the next succeeding sinking fund payment date plus
any unused balance of any preceding sinking fund payments made in cash shall
exceed $50,000 (or a lesser sum if the Company shall so request) with respect to
the Securities of any particular Series, such cash shall be applied on the next
succeeding sinking fund payment date to the redemption of Securities of such
Series at the sinking fund redemption price together with accrued interest to
the date fixed

                                       93
<PAGE>

for redemption. If such amount shall be $50,000 or less and the Company makes no
such request then it shall be carried over until a sum in excess of $50,000 is
available. The Trustee shall select, in the manner provided in Section 12.2, for
redemption on such sinking fund payment date a sufficient principal amount of
Securities of such Series to absorb said cash, as nearly as may be possible, and
shall (if requested in writing by the Company) inform the Company of the serial
numbers of the Securities of such Series (or portions thereof) so selected.
Securities of any Series which are identified by registration and certificate
number in an Officer's Certificate at least 60 days prior to the sinking fund
payment date as being beneficially owned by, and not pledged or hypothecated by,
the Company or an entity directly or indirectly controlling or controlled by or
under direct or indirect common control with the Company shall be excluded from
Securities of such Series eligible for selection for redemption. The Trustee, in
the name and at the expense of the Company (or the Company, if it shall so
notify the Trustee in writing) shall cause notice of redemption of the
Securities of such Series to be given in substantially the manner provided in
Section 12.2 (and with the effect provided in Section 12.3) for the redemption
of Securities of such Series in part at the option of the Company. The amount of
any sinking fund payments not so applied or allocated to the redemption of
Securities of such Series shall be added to the next cash sinking fund payment
for such Series and, together with such payment, shall be applied in accordance
with the provisions of this Section. Any and all sinking fund moneys held on the
stated maturity date of the Securities of any particular Series (or earlier, if
such maturity is accelerated), which are not held for the payment or redemption
of particular Securities of such Series shall be applied, together with other
moneys, if necessary, sufficient for the purpose, to the payment of the
principal of, and interest on, the Securities of such Series at maturity.

      On or before each sinking fund payment date, the Company shall pay to the
Trustee in cash or shall otherwise provide for the payment of all interest
accrued to the date fixed for redemption on Securities to be redeemed on such
sinking fund payment date.

            The Trustee shall not redeem or cause to be redeemed any Securities
of a Series with sinking fund moneys or mail or publish any notice of redemption
of Securities for such Series by operation of the sinking fund during the
continuance of a default in payment of interest on such Securities or of any
Event of Default except that, where the mailing or publication of notice of
redemption of any Securities shall theretofore have been made, the Trustee shall
redeem or cause to be redeemed such Securities,

                                       94
<PAGE>

provided that it shall have received from the Company a sum sufficient for such
redemption. Except as aforesaid, any moneys in the sinking fund for such Series
at the time when any such default or Event of Default shall occur, and any
moneys thereafter paid into the sinking fund, shall, during the continuance of
such default or Event of Default, be deemed to have been collected under Article
Five and held for the payment of all such Securities. In case such Event of
Default shall have been waived as provided in Section 5.10 or the default cured
on or before the sixtieth day preceding the sinking fund payment date in any
year, such moneys shall thereafter be applied on the next succeeding sinking
fund payment date in accordance with this Section to the redemption of such
Securities.

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

ATTEST                                       ENHANCE FINANCIAL SERVICES
                                             GROUP INC.

By:_________________________
     Name:                                   By:__________________________
     Title:                                       Name:
                                                  Title:
[CORPORATE SEAL]

ATTEST:
                                             BankOne Trust Company, NA,
                                             as Trustee

By:_________________________
     Name:                                   By:__________________________
     Title:                                       Name:
                                                  Title:
[CORPORATE SEAL]

                                       95
<PAGE>

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

     On this __th day of 1998, before me personally came ____________, to me
personally known, who, being by me duly sworn, did depose and say that he
resides at , _________________, ______________; that he is the _________ of
Enhance Financial Services Group Inc., one of the corporations described in and
which executed the above instrument; that he knows the corporate seal of said
corporation; that the seal affixed to said instrument is such corporate seal;
that it was so affixed by authority of the Board of Directors of said
corporation; and that he signed his name thereto by like authority.

[NOTARIAL SEAL]

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

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

On this __th day of __________ 1998 , before me personally came ___________, to
me personally known, who, being by me duly sworn, did depose and say that he
resides at ______________; that he is a _____________ of ________________, one
of the corporations described in and which executed the above instrument; that
he knows the corporate seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by authority of the
Board of Directors of said corporation, and that he signed his name thereto by
like authority.

[NOTARIAL SEAL]

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

                                       96
<PAGE>

                                                                     Exhibit A-1

                       [FORM OF CERTIFICATE TO BE GIVEN BY
                   PERSON ENTITLED TO RECEIVE BEARER SECURITY]

                                   CERTIFICATE
                      ENHANCE FINANCIAL SERVICES GROUP INC.
                   [Description of Securities to be delivered]

            This is to certify that the above-captioned Securities are not being
acquired by or on behalf of a United States Person or by persons who have
purchase such Securities for offer to resell or resale to any U.S. Persons or
any person in the United States or, if a beneficial interest in the Securities
is being acquired by or on behalf of a United States Person, that such person is
a financial institution within the meaning of Section 1.1.65-12(c)(1)(v) of the
United States Treasury regulations which agrees to comply with the requirements
of Section 165(j)(3)(A), (B) or (C) of the Internal Revenue Code of 1986, as
amended, and the regulations thereunder and which is not purchasing for offer to
resell or resale inside the United States. If the undersigned is a dealer, the
undersigned agrees to obtain a similar certificate from each person entitled to
delivery of any of the above-captioned Securities in bearer form purchased from
it; provided, however, that if the undersigned has actual knowledge that the
information contained in such a certificate is false, the undersigned will not
deliver a Security in temporary or definitive bearer form to the person who
signed such certificate notwithstanding the delivery of such certificate to the
undersigned.

            As used herein, "United States Person" means any citizen or resident
of the United States of America (including the States an the District of
Columbia) and its territories, its possessions and all areas subject to its
jurisdiction ("United States"), including any corporation, partnership or other
entity created or organized in or under the laws of the United States or any
political subdivision thereof and any estate or trust which is subject to United
States federal income taxation regardless of the source of its income.

            We undertake to advise you by telex if the above statement as to
beneficial ownership is not correct on the date of delivery of the
above-captioned Securities in bearer form as to all of such Securities.

                                      A-1-1
<PAGE>

            We understand that this certificate is required in connection with
United States securities and tax laws. We irrevocably authorize you to produce
this certificate or a copy hereof to any interested party in any administrative
or legal proceedings or official inquiry with respect to the matters covered by
this certificate.

Dated: ______________, 19__
[To be dated on or after
____________, 19__ (the date
determined pursuant to the
Indenture)]

                                    [Name of person entitled to
                                    receive Security]

                                     By:______________________________

                                      A-1-2
<PAGE>

                                                                     Exhibit A-2

                 [FORM OF CERTIFICATE TO BE GIVEN BY EURO-CLEAR
                 AND CEDEL S.A. IN CONNECTION WITH THE EXCHANGE
                  OF A PORTION OF A TEMPORARY GLOBAL SECURITY]

                                   CERTIFICATE

                      ENHANCE FINANCIAL SERVICES GROUP INC.

         [Description of Securities to be delivered]

This is to certify with respect to $     principal amount of the above-captioned
Securities (i) that we have received from each of the persons appearing in our
records as persons being entitled to a portion of such principal amount (our
"Qualified Account Holders") a certificate with respect to such portion
substantially in the form attached hereto and (ii) that we are not submitting
herewith for exchange any portion of the temporary global Security representing
the above-captioned Securities excepted in such certificate or certificates.

We further certify that as of the date hereof we have not received any
notification from any of our Qualified Account Holders to the effect that the
statements made by such Qualified Account Holders with respect to any portion of
the part of the Global Security submitted herewith for exchange are no longer
true and cannot be relied upon as of the date hereof.

Dated: 19__
(To be dated no earlier than
the Exchange Date)

                                    [MORGAN GUARANTY TRUST COMPANY OF
                                    NEW YORK, Brussels Office, as
                                    Operator of the Euro-clear System]

                                    [CEDEL S.A.]

                                    By:_______________________________
<PAGE>

                                                                     Exhibit A-3

                 [FORM OF CERTIFICATE TO BE GIVEN BY EURO-CLEAR
          AND CEDEL S.A. TO OBTAIN INTEREST PRIOR TO AN EXCHANGE DATE]

                                   CERTIFICATE

                      ENHANCE FINANCIAL SERVICES GROUP INC.
           [Description of Securities on which interest is to be paid]

This is to certify with respect to the above-captioned Securities or, with
respect to payments on any global security representing Securities, the
principal amount of any global security listed below that we have received from
each of the persons appearing in our records as persons being entitled to
receive payments with respect thereto (our "Qualified Account Holders") a
certificate with respect to such Qualified Account Holders substantially in the
form attached hereto.

We further certify that as of the date hereof we have not received any
notification from any of our Qualified Account Holders to the effect that the
statements made by such Qualified Account Holders with respect to any Security
or interest in any global security listed above are no longer true and cannot be
relied upon as of the date hereof.

Dated: ______________, 19__
(To be dated no earlier than the
relevant Interest Payment Date)

                                    MORGAN GUARANTY TRUST COMPANY OF NEW YORK,
                                    Brussels Office, as Operator of the
                                    Euro-clear System]

                                    [CEDEL S.A.]

                                    By:_______________________________________
<PAGE>

                                                                     Exhibit A-4

                                   CERTIFICATE

              [FORM OF CERTIFICATE TO BE GIVEN BY BENEFICIAL OWNERS
                 TO OBTAIN INTEREST PRIOR TO ANY EXCHANGE DATE)
                      ENHANCE FINANCIAL SERVICES GROUP INC.

           [Description of Securities on which interest is to be paid]

This is to certify that as of the Interest Payment Date on (Insert Date)and
except as provided in the second paragraph hereof, none of the above-captioned
Securities held by you for our account or any interest in any global security
representing the such Securities was beneficially owned by a United States
Person (as defined below) or by persons who have purchased such Securities for
offer to resell or resale to any United States Persons or any person in the
United States or, if any of such Securities held by you for our account were
beneficially owned by a United States Person, such United States Person either
provided an Internal Revenue Service Form W-9 with respect to such interest
payment or certified with respect to such interest payment that it was an exempt
recipient as defined in Section 1.6049-4(c)(1)(ii) of the United States Treasury
regulations.

This certificate excepts and does not relate to $______ principal amount of the
above-captioned Securities or an interest in a global security representing the
Securities appearing in your books as being held for our account as to which we
are not yet able so to certify and as to which we understand that we cannot
receive any payments with respect thereto until we are able so to certify.

We understand that this certificate is required in connection with United States
tax laws. We irrevocably authorize you to produce this certificate or a copy
hereof to any interested party in any administrative or legal proceedings or
official inquiry with respect to the matters covered by this certificate.

As used herein, "United States Person" means any citizen or resident of the
United States of America (including the States and the District of Columbia),
its territories and possessions an all areas subject to its jurisdiction
("United States"), including any corporation, partnership or other entity
created or organized in or under the laws of the United States or any political
subdivision thereof and any estate or trust which is subject to United States
federal income taxation regardless of the source of its income.

                                      A-4-1
<PAGE>

                                    (Name of person entitled to
                                    receive interest)

                                    By:_________________________________

Dated:________________, 19__
(To be dated on or after the
15th day before the relevant
Interest Payment Date)

                                      A-4-2

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