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                                                                  Exhibit 4.6(b)

                        THE CHASE MANHATTAN CORPORATION,


                         J.P. MORGAN & CO. INCORPORATED

                                       AND

                      U.S. BANK TRUST NATIONAL ASSOCIATION,

                                                as Trustee

                          FIRST SUPPLEMENTAL INDENTURE

                          Dated as of December 29, 2000

                                       to

                                    INDENTURE

                            Dated as of March 1, 1993

                          SUBORDINATED DEBT SECURITIES
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                  FIRST SUPPLEMENTAL INDENTURE, dated as of December 29, 2000,
among THE CHASE MANHATTAN CORPORATION, a Delaware corporation ("Successor"),
J.P. MORGAN & CO. INCORPORATED, a Delaware corporation ("J.P. Morgan"), and U.S.
BANK TRUST NATIONAL ASSOCIATION (formerly known as First Trust of New York,
National Association), a national banking association, successor to Citibank,
N.A., a national banking association, as trustee (the "Trustee", which term
shall include any successor trustee appointed pursuant to Article Six of the
Indenture hereafter referred to).

                  WHEREAS, J.P. Morgan and the Trustee have heretofore executed
and delivered a certain Indenture, dated as of March 1, 1993 (as amended or
modified prior to the date hereof, the "Indenture"; capitalized terms not
otherwise defined herein shall have the meanings set forth in the Indenture),
providing for the issuance from time to time of Securities;

                  WHEREAS, J.P. Morgan and Successor have entered into an
Agreement and Plan of Merger, dated as of September 12, 2000 (the "Merger
Agreement"), which contemplates the execution and filing of a Certificate of
Merger on the date hereof (the "Certificate of Merger") providing for the merger
(effective December 31, 2000) of J.P. Morgan with and into Successor (the
"Merger"), with Successor continuing its corporate existence under Delaware law
under the name "J.P. Morgan Chase & Co.";

                  WHEREAS, Section 9.1 of the Indenture provides, among other
things, that the Issuer shall not merge into any other corporation unless, among
other things, the corporation into which the Issuer is merged shall expressly
assume the due and punctual payment of the principal of and interest on all the
Securities and Coupons, according to their tenor, and the due and punctual
performance and observance of all of the covenants and conditions of the
Indenture to be performed or observed by the Issuer thereunder, by supplemental
indenture satisfactory to the Trustee;

                  WHEREAS, Section 8.1 of the Indenture provides, among other
things, that, without the consent of the Holders, the Issuer, when authorized by
a resolution of the Board of Directors of the Issuer, and the Trustee may from
time to time and at any time enter into an indenture or indentures supplemental
to the Indenture (i) to evidence the succession of another corporation to the
Issuer, and the assumption by the successor corporation of the covenants,
agreements and obligations of the Issuer and (ii) to make provisions in regard
to matters or questions arising under the Indenture as the Board of Directors
may deem necessary or desirable and which shall not materially adversely affect
the interests of the Holders of the Securities;

                  WHEREAS, Successor and J.P. Morgan desire and have requested
that the Trustee join in the execution of this First Supplemental Indenture for
the purpose of evidencing such succession and assumption and amending certain
provisions of the Indenture as hereinafter set forth;

                  WHEREAS, the execution and delivery of this First Supplemental
Indenture has been authorized by resolutions of the boards of directors of J.P.
Morgan and Successor; and

                  WHEREAS, all conditions precedent and requirements necessary
to make this First Supplemental Indenture a valid and legally binding instrument
in accordance with its terms have been complied with, performed and fulfilled
and the execution and delivery hereof have been in all respects duly authorized;

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                  NOW, THEREFORE, THIS FIRST SUPPLEMENTAL INDENTURE WITNESSETH:

                  For and in consideration of the premises and intending to be
legally bound hereby, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders, as follows:

                                  ARTICLE ONE

                  REPRESENTATIONS OF J.P. MORGAN AND SUCCESSOR

                  Each of J.P. Morgan and Successor represents and warrants to
the Trustee as follows:

                  SECTION 1.1. It is a corporation duly organized, validly
existing and in good standing under the laws of the State of Delaware.

                  SECTION 1.2. The execution, delivery and performance by it of
this First Supplemental Indenture have been authorized and approved by all
necessary corporate action on the part of it.

                  SECTION 1.3. Upon the filing of the Certificate of Merger with
the Secretary of State of the State of Delaware or at such other time thereafter
as is provided in the Certificate of Merger (the "Effective Time"), the Merger
will be effective in accordance with the terms of the Merger Agreement and
Delaware law.

                  SECTION 1.4. Immediately after giving effect to the Merger,
Successor shall not be in default in the performance of any covenant or
condition of the Indenture.

                                  ARTICLE TWO

                            ASSUMPTION AND AGREEMENTS

                  SECTION 2.1. Successor hereby expressly assumes the due and
punctual payment of the principal of and interest on all the Securities and
Coupons, according to their tenor, and the due and punctual performance and
observance of all covenants and conditions of the Indenture to be performed or
observed by the Issuer thereunder.

                  SECTION 2.2. The Securities and Coupons may bear a notation
concerning the assumption of the Indenture and the Securities and Coupons by
Successor.

                  SECTION 2.3. Successor shall succeed to and be substituted for
J.P. Morgan under the Indenture, with the same effect as if Successor had been
named as the Issuer thereunder.

                                       2
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                                 ARTICLE THREE

                                   AMENDMENTS

                  SECTION 3.1. The reference in the preamble to the Indenture to
"J.P. MORGAN & CO. INCORPORATED, a Delaware corporation (the "Issuer")," is
hereby amended to read "J.P. MORGAN CHASE & CO. (formerly known as The Chase
Manhattan Corporation), a Delaware corporation (the "Issuer")," and each other
reference therein to "J.P. Morgan & Co. Incorporated" shall be amended to read
"J.P. Morgan Chase & Co. (formerly known as The Chase Manhattan Corporation)".

                  SECTION 3.2. The definition of "Antecedent Subordinated
Indebtedness" contained in Section 1.1 of the Indenture is hereby amended in its
entirety to read as follows:

                           "'Antecedent Subordinated Indebtedness' means all
         indebtedness and other obligations outstanding on March 1, 1993 and
         enumerated in clauses (a)(ii) through (a)(iv) of the definition of
         Senior Indebtedness."

                  SECTION 3.3. The definition of "Senior Indebtedness" contained
in Section 1.1 of the Indenture is hereby amended in its entirety to read as
follows:

                           "'Senior Indebtedness' of the Issuer means the
         principal of, premium, if any, and interest on: (a) all indebtedness of
         the Issuer for money borrowed, whether outstanding on the date of
         execution of this Indenture or thereafter created, assumed or incurred,
         except (i) the Securities; (ii) the U.S.$150,000,000 aggregate
         principal amount of 8-1/2% Subordinated Notes Due 2003 of the Issuer;
         (iii) the U.S.$200,000,000 aggregate principal amount of 7-1/4%
         Subordinated Notes Due 2002 of the Issuer; (iv) the U.S.$200,000,000
         aggregate principal amount of Subordinated Floating Rate Notes Due 2002
         of the Issuer; (v) the U.S.$250,000,000 aggregate principal amount of
         Subordinated Floating Rate Notes Due 2002 of the Issuer; (vi) all
         securities issued pursuant to the Indenture, dated as of April 1, 1987,
         as amended and restated as of December 15, 1992, and as amended by the
         Second Supplemental Indenture, dated as of October 8, 1996, and the
         Third Supplemental Indenture, dated as of December 29, 2000, between
         the Issuer (formerly known as Chemical Banking Corporation) and U.S.
         Bank Trust National Association (formerly known as First Trust of New
         York, National Association), a national banking association, as
         successor to Morgan Guaranty Trust Company of New York, a New York
         banking corporation, as the same may further be amended, supplemented
         or otherwise modified from time to time; (vii) all securities issued
         pursuant to the Amended and Restated Indenture, dated as of September
         1, 1993, as amended by the First Supplemental Indenture, dated as of
         March 29, 1996, the Second Supplemental Indenture, dated as of October
         8, 1996, and the Third Supplemental Indenture, dated as of December 29,
         2000, between the Issuer (as successor-by-merger to The Chase Manhattan
         Corporation, a Delaware corporation) and U.S. Bank Trust National
         Association (formerly known as First Trust of New York, National
         Association), a national banking association, as successor to Chemical
         Bank, a New York banking corporation, as the same may be further
         amended, supplemented or otherwise modified from time to time; and
         (viii) such indebtedness as is by its terms expressly stated not to be
         superior in right of payment to, or to rank pari passu with, the
         Securities


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         or the other securities referred to in clauses (ii) through (vii); and
         (b) any deferrals, renewals or extensions of any such Senior
         Indebtedness. The term "indebtedness of the Issuer for money borrowed"
         as used in the foregoing sentence shall mean any obligation of, or any
         obligation guaranteed by, the Issuer for the repayment of borrowed
         money, whether or not evidenced by bonds, debentures, notes or other
         written instruments, and any deferred obligation for the payment of the
         purchase price of property or assets. The Securities shall rank pari
         passu with the securities referred to in clauses (a)(ii) through
         (a)(vii) above."

                  SECTION 3.4. Except as amended hereby, the Indenture and the
Securities and Coupons are in all respects ratified and confirmed and all the
terms thereof shall remain in full force and effect and the Indenture, as so
amended, shall be read, taken and construed as one and the same instrument.

                                  ARTICLE FOUR

                                  MISCELLANEOUS

                  SECTION 4.1. The Trustee accepts the modification of the
Indenture effected by this First Supplemental Indenture, but only upon the terms
and conditions set forth in the Indenture. Without limiting the generality of
the foregoing, the Trustee assumes no responsibility for the correctness of the
recitals herein contained, which shall be taken as the statements of J.P. Morgan
and Successor. The Trustee makes no representation and shall have no
responsibility as to the validity and sufficiency of this First Supplemental
Indenture.

                  SECTION 4.2. If and to the extent that any provision of this
First Supplemental Indenture limits, qualifies or conflicts with another
provision included in this First Supplemental Indenture or in the Indenture that
is required to be included in this First Supplemental Indenture or in the
Indenture by any of the provisions of Sections 310 to 317, inclusive, of the
Trust Indenture Act of 1939, such required provision shall control.

                  SECTION 4.3. Nothing in this First Supplemental Indenture is
intended to or shall provide any rights to any parties other than those
expressly contemplated by this First Supplemental Indenture.

                  SECTION 4.4. This First Supplemental Indenture 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, except as may
otherwise be required by mandatory provisions of law.

                  SECTION 4.5. This First Supplemental Indenture may be executed
in any number of counterparts, each of which so executed shall be deemed to be
an original, but all such counterparts shall together constitute but one and the
same instrument.

                  SECTION 4.6. This First Supplemental Indenture shall become
effective as of the Effective Time.

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

                                       J.P. MORGAN & CO. INCORPORATED


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


(Corporate Seal)

Attest:


---------------------------------
Secretary

                                       THE CHASE MANHATTAN
                                         CORPORATION

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


(Corporate Seal)

Attest:


---------------------------------
Assistant Secretary
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                                       U.S. BANK TRUST NATIONAL
                                         ASSOCIATION, as Trustee

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


(Corporate Seal)

Attest:


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


                  On this ___ of December, 2000, before me, the undersigned
officer, personally appeared___________, who acknowledged himself to be the
__________________ of J.P. MORGAN & CO. INCORPORATED, a Delaware corporation,
and that he as such officer, being authorized to do so, executed the foregoing
instrument for the purposes therein contained by signing the name of the
corporation by himself as such officer.

                  IN WITNESS WHEREOF, I hereunto set my hand and official seal.

                                          _____________________________________
                                          Notary Public

[SEAL]


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


                  On this ____ day of December, 2000, before me, the undersigned
officer, personally appeared Marc J. Shapiro, who acknowledged himself to be the
Vice Chairman, Risk Management and Administration of THE CHASE MANHATTAN
CORPORATION, a Delaware corporation, and that he as such officer, being
authorized to do so, executed the foregoing instrument for the purposes therein
contained by signing the name of the corporation by himself as such officer.

                  IN WITNESS WHEREOF, I hereunto set my hand and official seal.

                                               ________________________________
                                               Notary Public

[SEAL]
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STATE OF NEW YORK  )
                   )  ss.:
COUNTY OF NEW YORK )


                  On this ___ day of December, 2000, before me, the undersigned
officer, personally appeared _______________, who acknowledged himself to be
_______________ of U.S. BANK TRUST NATIONAL ASSOCIATION, a national banking
association, and that he as such officer, being authorized to do so, executed
the foregoing instrument for the purposes therein contained by signing the name
of the association by himself as such officer.

                  IN WITNESS WHEREOF, I hereunto set my hand and official seal.

                                               ________________________________
                                               Notary Public

[SEAL]