EXHIBIT 4-3

FOURTH SUPPLEMENTAL INDENTURE

FROM

MICHIGAN CONSOLIDATED GAS COMPANY

TO

CITIBANK, N.A.

TRUSTEE

Dated as of February 15, 2003

SUPPLEMENT TO INDENTURE

Dated as of June 1, 1998

Providing for

5.70% Senior Notes, 2003 Series A due 2033

This FOURTH SUPPLEMENTAL INDENTURE is made as of the 15th day of February, 2003, by and between MICHIGAN CONSOLIDATED GAS COMPANY, a corporation duly organized and existing under the laws of the State of Michigan (the "Company"), and CITIBANK, N.A., a national banking association incorporated and existing under and by virtue of the laws of the United States of America, as trustee (the "Trustee").

RECITALS OF THE COMPANY:

WHEREAS, the Company has heretofore executed and delivered to the Trustee an Indenture, dated as of June 1, 1998 (the "Original Indenture"), as amended, supplemented and modified (as so amended, supplemented and modified, the "Indenture"), providing for the issuance by the Company from time to time of its senior debt securities (the "Securities"); and

WHEREAS, the Company desires to provide for the issuance of a series of its Securities pursuant to the Indenture; and

WHEREAS, the Company, in the exercise of the power and authority conferred upon and reserved to it under the provisions of the Original Indenture, including Section 10.1 thereof, and pursuant to appropriate resolutions of the Board of Directors, has duly determined to make, execute and deliver to the Trustee this Supplemental Indenture to the Original Indenture as permitted by Section 2.1 and Section 3.1 of the Original Indenture in order to establish the form or terms of, and to provide for the creation and issue of, a series of its Securities under the Original Indenture, which shall be known as the "5.70% Senior Notes, 2003 Series A due 2033" (the "Senior Notes"); and

WHEREAS, all things necessary to make such Securities, when executed by the Company and authenticated and delivered by the Trustee or any Authenticating Agent and issued upon the terms and subject to the conditions hereinafter and in the Original Indenture set forth against payment therefor, the valid, binding and legal obligations of the Company and to make this Supplemental Indenture a valid, binding and legal agreement of the Company, have been done;

NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE that, in order to establish the terms of a series of Securities, and for and in consideration of the premises and of the covenants contained in the Original Indenture and in this Supplemental Indenture and for other good and valuable consideration the receipt and sufficiency of which are hereby acknowledged, it is mutually covenanted and agreed as follows:

Article I
RELATION TO INDENTURE; DEFINITIONS

Section 1.01.

This Supplemental Indenture constitutes an integral part of the Indenture.

Section 1.02.

For all purposes of this Supplemental Indenture:

(a) Capitalized terms used but not otherwise defined herein shall have the respective meanings assigned to such terms in the Indenture;

(b) All references herein to Articles and Sections, unless otherwise specified, refer to the corresponding Articles and Sections of this Supplemental Indenture; and

(c) The terms "hereof," "herein," "hereby," "hereto," "hereunder," and "herewith" refer to this Supplemental Indenture.

Article II
THE SECURITIES

This Supplemental Indenture hereby establishes a series of Securities, known as and entitled "5.70% Senior Notes, 2003 Series A due 2033." The aggregate principal amount of the Securities shall be limited initially to Two Hundred Million Dollars ($200,000,000) (except for Senior Notes authenticated and delivered upon transfer of, or in exchange for, or in lieu of, other Senior Notes); provided that the Company may, without the consent of the Holders, "reopen" the series of Senior Notes so as to increase the aggregate principal amount of the Senior Notes in compliance with the procedures set forth in the Original Indenture, including Section 3.1 and Section 3.3 thereof, and subject to limitations, if any, on the Company's ability to issue Collateral Bonds securing the additional Senior Notes, so long as any such additional Senior Notes have the same tenor and terms as the Senior Notes then Outstanding.

The Senior Notes are not subject to repayment at the option of Holders thereof and are not subject to any sinking fund. As provided in the form of Senior Notes attached hereto as Appendix I, the Senior Notes are subject to optional redemption, as a whole or in part, by the Company prior to the Stated Maturity of the principal thereof on the terms set forth therein. Except as modified in the form of the Senior Notes, redemptions shall be effected in accordance with Article Twelve of the Original Indenture.

The Senior Notes shall have such other terms and provisions as are set forth in the form of the Senior Notes attached hereto as Appendix I (which is incorporated by reference in and made a part of this Supplemental Indenture as if set forth in full at this place).

The Senior Notes shall be issuable only in fully registered form and, as permitted by Section 3.1 and Section 3.2 of the Original Indenture, in denominations of $1,000 and integral multiples thereof. The Senior Notes will initially be issued in global form (the "Global Notes") under a book-entry system, registered in the name of The Depository Trust Company, as depository ("DTC"), or its nominee, which is hereby designated as "U.S. Depositary" under the Indenture.

Further to Section 3.5 of the Original Indenture, any Global Note shall be exchangeable for Senior Notes registered in the name of, and a transfer of a Global Note may be registered to, any Person other than the U.S. Depositary for such Senior Note or its nominee only if (i) such U.S. Depositary notifies the Company that it is unwilling or unable to continue as U.S. Depositary for such Global Note or if at any time such U.S. Depositary ceases to be a clearing agency registered under the Exchange Act, and, in either such case, the Company does not appoint a successor U.S. Depositary within 90 days thereafter, (ii) the Company executes and

delivers to the Trustee a Company Order that such Global Note shall be so exchangeable and the transfer thereof so registrable or (iii) there shall have occurred and be continuing an Event of Default or an event which, with the giving of notice or lapse of time, or both, would constitute an Event of Default with respect to the Senior Notes. Upon the occurrence in respect of any Global Note of any or more of the conditions specified in clause (i), (ii) or (iii) of the preceding sentence, such Global Note may be exchanged for Senior Notes registered in the name of, and the transfer of such Global Note may be registered to, such Persons (including Persons other than the U.S. Depositary and its nominees) as such U.S. Depositary, in the case of an exchange, and the Company, in the case of a transfer, shall direct.

Article III
TRANSFER OF COLLATERAL BONDS

The Company hereby issues, delivers and transfers to the Trustee in connection with the issuance of the Senior Notes, Two Hundred Million Dollars ($200,000,000) aggregate principal amount of a related issue of Collateral Bonds of the Company designated "First Mortgage Bonds, 5.70% Collateral Bonds due 2033" (the "Related Issue of Collateral Bonds" and, together with all other First Mortgage Bonds issued under the First Mortgage Indenture as security for Securities issued under the Indenture, "Collateral Bonds"), which has been fully registered in the name of the Trustee in such capacity, to be held in trust for the benefit of the Holders from time to time of the Senior Notes as security for any and all obligations of the Company in respect of the Senior Notes of this series under the Indenture, this Supplemental Indenture and the Senior Notes, including but not limited to (1) the full and prompt payment of the interest on, principal of, and premium, if any, on the Senior Notes when and as the same shall become due and payable in accordance with the terms and provisions of the Indenture and this Supplemental Indenture and the Senior Notes, either at the Stated Maturity, upon acceleration of the maturity or upon redemption of the Senior Notes, and (2) the full and prompt payment of any interest on the Senior Notes when and as the same shall become due and payable in accordance with the terms and provisions of the Indenture and this Supplemental Indenture and the Senior Notes. The Trustee shall enforce all of its rights under the First Mortgage Indenture as a holder of the Related Issue of Collateral Bonds transferred to it as provided in this Article III for the benefit of the Holders of the Senior Notes and the proceeds of the enforcement of such rights shall be applied by the Trustee to satisfy the Company's obligations under the Indenture, this Supplemental Indenture and the Senior Notes.

The Company shall make payments of the principal of, and premium or interest on, the Related Issue of Collateral Bonds to the Trustee, which payments shall be applied by the Trustee to satisfaction of all obligations then due on the Senior Notes.

The Related Issue of Collateral Bonds shall not be sold or transferred by the Trustee until the earlier of the Release Date or the prior retirement of the Senior Notes through redemption, repurchase or otherwise. The "Release Date" shall be the date that all First Mortgage Bonds of the Company issued and outstanding under the First Mortgage Indenture, other than the Collateral Bonds, have been retired (at, before or after the maturity thereof) through payment, redemption or otherwise, provided that no default or Event of Default has occurred and, at such time, is continuing under the Indenture.

Article IV
COVENANTS

Section 4.01.

The covenant set forth in Section 11.10 of the Indenture shall apply to the Senior Notes only from and after the Release Date (unless Substituted Collateral Bonds are issued to secure the Senior Notes from and after the Release Date); provided, that, in any case, the Company may issue, assume or guarantee Indebtedness secured by a Lien not otherwise permitted under Section 11.10 so long as it effectively secures the Senior Notes equally and ratably with such Indebtedness.

Section 4.02.

The covenant set forth in Section 11.11 of the Indenture shall apply to the Senior Notes only from and after the Release Date (unless Substituted Collateral Bonds are issued to secure the Senior Notes from and after the Release Date).

Article V
MISCELLANEOUS

Section 5.01.

The Trustee has accepted the amendment of the Indenture effected by this Supplemental Indenture and agrees to execute the trust created by the Indenture as hereby amended, but only upon the terms and conditions set forth in the Indenture, including the terms and provisions defining and limiting the liabilities and responsibilities of the Trustee, and without limiting the generality of the foregoing, the Trustee shall not be responsible in any manner whatsoever for or with respect of any of the recitals or statements contained herein, all of which recitals or statements are made solely by the Company, or for or with respect to (a) the validity or sufficiency of this Supplemental Indenture or any of the terms or provisions hereof, (b) the proper authorization hereof by the Company by corporate action or otherwise, and (c) the due execution hereof by the Company.

Section 5.02.

This Supplemental Indenture and the Senior Notes shall be construed in connection with and as a part of the Indenture and shall be governed by the laws (other than the choice of law provisions) of the State of New York.

Section 5.03.

(a) If any provision of this Supplemental Indenture conflicts with another provision of the Indenture required to be included in indentures qualified under the Trust Indenture Act of 1939, as amended (as enacted prior to the date of this Supplemental Indenture), by any of the provisions of Section 310 to 317, inclusive, of said act, such required provision shall control.

(b) In case any one or more of the provisions contained in this Supplemental Indenture or in the Senior Notes issued hereunder should be invalid, illegal, or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions contained herein and therein shall not in any way be affected, impaired, prejudiced or disturbed thereby.

Section 5.04.

Whenever in this Supplemental Indenture either of the parties hereto is named or referred to, such name or reference shall be deemed to include the successors or assigns of such party, and all the covenants and agreements contained in this Supplemental Indenture by or on behalf of the Company or by or on behalf of the Trustee shall bind and inure to the benefit of the respective successors and assigns of such parties, whether so expressed or not.

Section 5.05.

(a) This Supplemental Indenture may be simultaneously executed in several counterparts, and all such counterparts executed and delivered, each as an original, shall constitute but one and the same instrument.

(b) The descriptive headings of the several Articles of this Supplemental Indenture were formulated, used and inserted in this Supplemental Indenture for convenience only and shall not be deemed to affect the meaning or construction of any of the provisions hereof.

IN WITNESS WHEREOF, MICHIGAN CONSOLIDATED GAS COMPANY has caused this Supplemental Indenture to be executed by its duly authorized Officer and its corporate seal to be hereunto affixed, and CITIBANK, N.A., as Trustee as aforesaid, has caused this Supplemental Indenture to be executed by one of its authorized signatories, as of February 15, 2003.

MICHIGAN CONSOLIDATED GAS COMPANY

By:  /s/N.A. Khouri

Name: N.A. Khouri
Title: Vice President and Treasurer

CITIBANK, N.A., as Trustee

By: /s/Wafaa Orfy

Name: Wafaa Orfy
Title: Vice President

CUSIP: 594457 BT9
No. R-1

$200,000,000

THIS NOTE IS IN GLOBAL FORM WITHIN THE MEANING OF THE SENIOR INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A U.S. DEPOSITARY OR A NOMINEE OF A U.S. DEPOSITARY. UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN

PART FOR A NOTE IN CERTIFICATED FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS

A WHOLE BY THE U.S. DEPOSITARY TO A NOMINEE OF THE U.S. DEPOSITARY OR BY A NOMINEE OF THE U.S. DEPOSITARY TO THE U.S. DEPOSITARY OR ANOTHER NOMINEE OF THE U.S. DEPOSITARY OR BY THE U.S. DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY.

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to the Company (as defined below) or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

MICHIGAN CONSOLIDATED GAS COMPANY

5.70% Senior Notes
2003 Series A due 2033

Principal Amount: $200,000,000

Authorized Denomination: $1,000

Regular Record Date: close of business on the 15th calendar day (whether or not a Business Day) prior to the relevant Interest Payment Date

Original Issue Date: February 20, 2003

Stated Maturity: March 15, 2033

Interest Payment Dates: March 15 and September 15 of each year, commencing September 15, 2003

Interest Rate: 5.70% per annum

MICHIGAN CONSOLIDATED GAS COMPANY, a corporation duly organized and existing under the laws of the State of Michigan (the "Company", which term includes any successor corporation under the Senior Indenture hereinafter referred to), for value received,

hereby promises to pay to Cede & Co. or registered assigns, at the office or agency of the Company in The City of New York, New York, the principal sum of TWO HUNDRED MILLION DOLLARS ($200,000,000) on March 15, 2033 (the "Stated Maturity"), in the coin or currency of the United States, and to pay interest thereon from the Original Issue Date shown above, or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually in arrears on each Interest Payment Date as specified above, commencing on September 15, 2003 and on the Stated Maturity at the rate per annum shown above (the "Interest Rate") until the principal hereof is paid or made available for payment and on any overdue principal and premium and on any overdue installment of interest. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in the Senior Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered on the Regular Record Date as specified above next preceding such Interest Payment Date; provided that any interest payable at Stated Maturity or on a Redemption Date will be paid to the Person to whom principal is payable. Except as otherwise provided in the Senior Indenture, any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Senior Note is registered at the close of business on a Special Record Date for the payment of such defaulted Interest to be fixed by the Senior Trustee, notice whereof shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange, if any, on which the Securities of this series shall be listed, and upon such notice as may be required by any such exchange, all as more fully provided in the Senior Indenture.

Payments of interest on this Senior Note will include interest accrued to but excluding the respective Interest Payment Dates. Interest payments for this Senior Note shall be computed and paid on the basis of a 360-day year of twelve 30-day months. The Company shall pay interest on overdue principal and premium, if any, and, to the extent lawful, on overdue installments of interest at the rate per annum borne by this Senior Note. In the event that any Interest Payment Date, Redemption Date or Maturity Date is not a Business Day, then the required payment of principal, premium, if any, and interest will be made on the next succeeding day that is a Business Day (and without any interest or other payment in respect of any such delay). "Business Day" means any day other than a day on which banking institutions in The State of New York or the State of Michigan are authorized or obligated pursuant to law or executive order to close.

Payment of principal of, premium, if any, and interest on the Securities of this series shall be made in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. Payments of principal of, premium, if any, and interest on Securities of this series represented by a Global Security shall be made by wire transfer of immediately available funds to the Holder of such Global Security, provided that, in the case of payments of principal and premium, if any, such Global Security is first surrendered to the Paying Agent (as defined in the Senior Indenture). If any of the Securities of this series are no longer represented by a Global Security, (i) payments of principal, premium, if any, and interest due at the Stated Maturity or earlier redemption of such Securities shall be made at the office of the Paying Agent upon surrender of such Securities to the Paying Agent, and (ii) payments of interest shall be made, at the option of the Company, subject to such surrender where applicable, (A) by check mailed to the address of the Person entitled thereto as such

address shall appear in the Security Register or (B) by wire transfer at such place and to such account at a banking institution in the United States as may be designated in writing to the Senior Trustee at least sixteen (16) days prior to the date for payment by the Person entitled thereto.

UNTIL THE RELEASE DATE (AS DEFINED ON THE REVERSE HEREOF), THIS SENIOR NOTE SHALL BE SECURED BY FIRST MORTGAGE BONDS (THE "FIRST MORTGAGE BONDS") ISSUED AND DELIVERED BY THE COMPANY TO THE SENIOR TRUSTEE (AS DEFINED ON THE REVERSE HEREOF) UNDER THE COMPANY'S TWENTY-NINTH SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989, PROVIDING FOR THE RESTATEMENT OF THE INDENTURE OF MORTGAGE AND DEED OF TRUST DATED AS OF MARCH 1, 1994 BETWEEN THE COMPANY AND CITIBANK, N.A. (THE "MORTGAGE TRUSTEE"), AS SUPPLEMENTED BY THE THIRTY-SEVENTH SUPPLEMENTAL INDENTURE (AS SO SUPPLEMENTED, THE "MORTGAGE INDENTURE"). ON THE RELEASE DATE, THE SENIOR NOTES SHALL CEASE TO BE SECURED BY SUCH FIRST MORTGAGE BONDS AND, AT THE COMPANY'S OPTION, EITHER (i) SHALL BECOME UNSECURED GENERAL OBLIGATIONS OF THE COMPANY OR (ii) SHALL BE SECURED BY FIRST MORTGAGE BONDS UNDER A SECURED MORTGAGE INDENTURE OTHER THAN THE MORTGAGE INDENTURE.

Reference is made to the further provisions of this Senior Note set forth herein. Such further provisions shall for all purposes have the same effect as though fully set forth at this place.

This Senior Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been manually signed by the Senior Trustee under the Senior Indenture referred to on the reverse hereof.

IN WITNESS WHEREOF, MICHIGAN CONSOLIDATED GAS COMPANY has caused this

instrument to be duly executed under its corporate seal.

Dated: February 20, 2003

MICHIGAN CONSOLIDATED GAS COMPANY

Attest:

CERTIFICATION OF AUTHENTICATION

Dated:

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

CITIBANK, N.A., as Trustee

MICHIGAN CONSOLIDATED GAS COMPANY

5.70% Senior Notes
2003 Series A due 2033

1. Senior Indenture. (a) This Senior Note is one of the duly authorized issue of Securities of the Company (hereinafter called the "Securities") of the series hereinafter specified, all issued or to be issued under and pursuant to an Indenture, dated as of June 1, 1998, as supplemented by the First Supplemental Indenture, dated as of June 18, 1998, the Second Supplemental Indenture, dated as of June 9, 1999, the Third Supplemental Indenture, dated as of August 15, 2001 and the Fourth Supplemental Indenture dated as of February 15, 2003, between the Company and the Trustee (as so supplemented, the "Senior Indenture"), duly executed and delivered by the Company to Citibank, N.A., as Trustee (herein called the "Senior Trustee," which term includes any successor trustee under the Senior Indenture), to which Senior Indenture reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Senior Trustee, the Company and the Holders of the Securities. The Securities may be issued in one or more series, which different series may be issued in various aggregate principal amounts, may mature at different times, may bear interest, if any, at different rates, may be subject to different redemption provisions (if any) and may be subject to different sinking, purchase or analogous funds (if any) and may otherwise vary as provided in the Senior Indenture. This Security is one of the series designated as the "5.70% Senior Notes, 2003 Series A due 2033" (the "Senior Notes") of the Company.

(b) The Senior Indenture contains provisions for defeasance at any time of the entire indebtedness of the Senior Notes or certain covenants with respect thereto upon compliance by the Company with certain conditions set forth therein.

2. Transfer. No service charge will be made for any transfer or exchange of Senior Notes, but payment will be required of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection therewith.

The Company shall not be required (a) to issue, transfer or exchange any Senior Notes during a period beginning at the opening of business fifteen
(15) days before the day of the mailing of a notice pursuant to Section 12.4 of the Indenture identifying the serial numbers of the Senior Notes to be called for redemption, and ending at the close of business on the day of the mailing, or (b) to transfer or exchange any Senior Notes theretofore selected for redemption in whole or in part, except the unredeemed portion of any Note redeemed in part.

3. Redemption at the Company's Option. The Senior Notes shall be subject to redemption at the option of the Company, in whole at any time or in part from time to time (any such date of optional redemption, a "Redemption Date" for purposes of the Indenture), at an optional redemption price (which shall be a "Redemption Price" for purposes of the Indenture) equal to the greater of (i) 100% of the principal amount of the Senior Notes to be redeemed and (ii) the sum of the present values of the principal amount of the Senior Notes to be redeemed and the remaining scheduled payments of interest on the principal amount of the Senior Notes to be redeemed (exclusive of interest accrued to the related Redemption Date) until Stated Maturity, in each case discounted from their respective scheduled payment dates to such Redemption Date on

a semiannual basis (assuming a 360-day year consisting of 30-day months) at the Adjusted Treasury Rate (as defined below) plus 30 basis points, plus in either case, accrued interest thereon to the date of redemption.

"Adjusted Treasury Rate" means, with respect to any Redemption Date, the rate per annum equal to the semiannual yield to maturity of the Comparable Treasury Issue, calculated on the third Business Day preceding such Redemption Date, using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.

"Comparable Treasury Issue" means the United States Treasury security determined by the Reference Treasury Dealer selected by the Company as having a maturity comparable to the remaining term of the Senior Notes that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity with the remaining term of the Senior Notes.

"Comparable Treasury Price" means, with respect to any Redemption Date,
(i) the average of the Reference Treasury Dealer Quotations for such Redemption Date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (ii) if the Senior Trustee obtains fewer than three such Reference Treasury Dealer Quotations, the average of all such quotations, or
(iii) if only one Reference Treasury Dealer Quotation is received, such quotation.

"Reference Treasury Dealer" means each of: (i) UBS Warburg LLC, Banc One Capital Markets, Inc. and Barclays Capital Inc. (or their respective affiliates which are Primary Treasury Dealers), and their respective successors; provided, however, that if any of the foregoing cease to be a primary U.S. Government securities dealer in The City of New York (a "Primary Treasury Dealer"), the Company shall substitute therefore another Primary Treasury Dealer; and (ii) any other Primary Treasury Dealer(s) selected by the Senior Trustee after consultation with the Company.

"Reference Treasury Dealer Quotation" means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Senior Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Senior Trustee by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day preceding such Redemption Date.

Unless the Company defaults in payment of the applicable Redemption Price, on and after the applicable Redemption Date interest will cease to accrue on the principal amount of the Senior Notes called for redemption.

If money sufficient to pay the applicable Redemption Price with respect to the principal amount of and accrued interest on the principal amount of the Senior Notes to be redeemed on the applicable Redemption Date is deposited with the Senior Trustee or Paying Agent on or before the related Redemption Date and certain other conditions are satisfied, then on or after such date, interest will cease to accrue on the principal amount of the Senior Notes called for redemption.

If the Senior Notes are only partially redeemed by the Company, the Senior Trustee shall select which Senior Notes are to be redeemed in a manner it deems fair and appropriate in accordance with the terms of the Indenture.

In the event of redemption of the Senior Notes in part only, a new Senior Note or Notes for the unredeemed portion will be issued in the name or names of the Holders thereof upon the surrender thereof.

The Senior Notes will not have a sinking fund.

Notice of redemption shall be given as provided in Section 12.4 of the Indenture.

Any redemption of less than all of the Senior Notes shall, with respect to the principal thereof, be divisible by $1,000.

4. Security; Release Date. Prior to the Release Date (as hereinafter defined), the Senior Notes shall be secured by First Mortgage Bonds designated as 5.70% Collateral Bonds due 2033 (the "Collateral Bonds"), delivered by the Company to the Senior Trustee for the benefit of the Holders of the Senior Notes. Prior to the Release Date, the Company shall make payments of the principal of, and premium, if any, and or interest on, the Collateral Bonds to the Senior Trustee, which payments shall be applied by the Senior Trustee to satisfaction of all obligations then due on the Senior Notes. Reference is made to the Mortgage Indenture and the Senior Indenture for a description of the rights of the Senior Trustee as holder of the Collateral Bonds, the property mortgaged and pledged under the Mortgage Indenture and the rights of the Company and of the Mortgage Trustee in respect thereof, the duties and immunities of the Mortgage Trustee and the terms and conditions upon which the Collateral Bonds are secured and the circumstances under which additional First Mortgage Bonds may be issued.

FROM AND AFTER SUCH TIME AS ALL FIRST MORTGAGE BONDS (OTHER THAN COLLATERAL BONDS) ISSUED UNDER THE MORTGAGE INDENTURE HAVE BEEN RETIRED THROUGH PAYMENT, REDEMPTION OR OTHERWISE AT, BEFORE OR AFTER THE MATURITY THEREOF (THE "RELEASE DATE"), THE COLLATERAL BONDS SHALL CEASE TO SECURE THE SENIOR NOTES IN ANY MANNER PROVIDED THAT NO DEFAULT OR EVENT OF DEFAULT HAS OCCURRED AND AT SUCH TIME IS CONTINUING UNDER THE SENIOR INDENTURE. IN CERTAIN CIRCUMSTANCES PRIOR TO THE RELEASE DATE AS PROVIDED IN THE SENIOR INDENTURE, THE COMPANY IS PERMITTED TO REDUCE THE AGGREGATE PRINCIPAL AMOUNT OF A SERIES OF COLLATERAL BONDS HELD BY THE TRUSTEE, BUT IN NO EVENT PRIOR TO THE RELEASE DATE TO AN AMOUNT LESS THAN THE AGGREGATE OUTSTANDING PRINCIPAL AMOUNT OF THE SERIES OF SENIOR NOTES INITIALLY ISSUED CONTEMPORANEOUSLY WITH SUCH COLLATERAL BONDS.

5. Effect of Event of Default. In case an Event of Default with respect to the Senior Notes shall occur and be continuing, the unpaid principal of the Senior Notes may be declared due and payable, in the manner, with the effect and subject to the conditions provided in the Senior Indenture.

6. Amendments and Waivers. The Senior Indenture may be modified by the Company and the Senior Trustee without consent of any Holder with respect to certain matters as described in the Indenture. In addition, the Senior Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Senior Indenture at any time by the Company and the Senior Trustee with the consent of the Holders of a majority in principal amount of the Securities at the time Outstanding of each series to be affected. The Senior Indenture also contains provisions permitting the Holders of a majority in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Senior Indenture and certain past defaults under the Senior Indenture and their consequences. Any such consent or waiver by the Holder of this Senior Note shall bind such Holder and all future Holders of this Senior Note and of any note issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Senior Note.

7. Obligations of Company. No reference herein to the Senior Indenture and no provision of this Senior Note or of the Senior Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium, if any, and interest on this Senior Note at the time, place, and rate and in the coin or currency herein prescribed.

8. Denominations, Transfer and Exchange. (a) The Senior Notes are issuable only in registered form without coupons in denominations of $1,000 and any integral multiple thereof. As provided in the Senior Indenture and subject to certain limitations therein set forth, Senior Notes of this series are exchangeable for a like aggregate principal amount of Senior Notes of this series of a different authorized denomination, as requested by the Holder surrendering the same.

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

(c) No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. Prior to due presentment of this Senior Note for registration of transfer, the Company, the Senior Trustee and any agent of the Company or the Senior Trustee may treat the Person in whose name this Senior Note is registered as the owner hereof for all purposes, whether or not this Senior Note be overdue, and neither the Company, the Senior Trustee nor any such agent shall be affected by notice to the contrary.

9. No Liability of Certain Persons. A director, officer, employee or stockholder, as such, of the Company shall not have any liability for any obligations of the Company under this Senior Note or the Senior Indenture or for any claim based on, in respect of or by reason of, such obligations or their creation. Each Holder, by accepting a Senior Note, waives and releases all such liability. The waiver and release are part of the consideration for the issuance of this Senior Note.

10. Governing Law. The Senior Indenture and this Senior Note shall for all purposes be governed by, and construed in accordance with, the internal laws of the State of New York.

TEN COM -- as tenants in common            (Name) CUST (Name) UNIF -- (Name) as Custodian
TEN ENT -- as tenants by the entirety      GIFT MIN ACT (state) for (name) under the (State)
JF TEN -- as joint tenants                     Uniform Gifts to
          with right of                        Junior Act
          survivorship and not as
          tenants in common

ADDITIONAL ABBREVIATIONS MAY ALSO BE USED THOUGH NOT IN THE ABOVE LIST.

To assign this Note, fill in the form below: (I) or (we) assign and transfer this Note to

Dated:                    Your Signature:
      ------------------                 ---------------------------------------
                                         (Sign exactly as your name appears on
                                         the other side of this Note)

EXHIBIT 4-4

Executed in 75 Counterparts
of which this is Counterpart No. ___

THIRTY-SEVENTH
SUPPLEMENTAL INDENTURE
TO
INDENTURE OF MORTGAGE AND
DEED OF TRUST
DATED AS OF MARCH 1, 1944

AS RESTATED IN
PART II OF THE TWENTY-NINTH
SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989
WHICH BECAME EFFECTIVE ON APRIL 1, 1994

MICHIGAN CONSOLIDATED GAS COMPANY
TO
CITIBANK, N.A.
TRUSTEE
DATED AS OF FEBRUARY 15, 2003
CREATING AN ISSUE OF FIRST MORTGAGE BONDS,
DESIGNATED AS
5.70% COLLATERAL BONDS DUE 2033

FRANCES B. ROHLMAN
2000 2ND AVENUE, 688WCB
DETROIT, MI 48226

MICHIGAN CONSOLIDATED GAS COMPANY

THIRTY-SEVENTH SUPPLEMENTAL INDENTURE
DATED AS OF FEBRUARY 15, 2003
SUPPLEMENTAL TO INDENTURE OF MORTGAGE
AND DEED OF TRUST
DATED AS OF MARCH 1, 1944

TABLE OF CONTENTS

                                                                            PAGE
                                                                            ----
                                    ARTICLE I

ESTABLISHMENT OF AN ISSUE OF FIRST MORTGAGE BONDS, OF THE SERIES
DESIGNATED AND DISTINGUISHED AS "COLLATERAL BONDS" 5

    SECTION 1..........................................................        5
    SECTION 2..........................................................       12
    SECTION 3..........................................................       13
    SECTION 4..........................................................       13
    SECTION 5..........................................................       14

                                   ARTICLE II

ISSUE OF COLLATERAL BONDS..............................................       15

                                   ARTICLE III

THE TRUSTEE............................................................       15

                                   ARTICLE IV

MISCELLANEOUS PROVISIONS...............................................       15

THIS THIRTY- SEVENTH SUPPLEMENTAL INDENTURE, dated as of the 15th day of February, 2003, between MICHIGAN CONSOLIDATED GAS COMPANY, a corporation duly organized and existing under and by virtue of the laws of the State of Michigan (hereinafter called the "Company"), having its principal place of business at 2000 2nd Avenue, Detroit, Michigan, and CITIBANK, N.A. (formerly First National City Bank), a national banking association incorporated and existing under and by virtue of the laws of the United States of America, having an office at 111 Wall Street in the Borough of Manhattan, The City of New York, New York, successor to CITY BANK FARMERS TRUST COMPANY (hereinafter with its predecessors as trustee called the "Mortgage Trustee" or the "Trustee"):

WHEREAS, the Company has heretofore executed and delivered to the Trustee an Indenture of Mortgage and Deed of Trust (the "Original Indenture"), dated as of March 1, 1944;

WHEREAS, the Company has heretofore executed and delivered to the Trustee the Twenty-ninth Supplemental Indenture, which became effective April 1, 1994, to provide for the modification and restatement of the Original Indenture as previously amended (as so amended, supplemented and modified the "Indenture"), and to secure the Company's First Mortgage Bonds, unlimited in aggregate principal amount except as therein otherwise provided, issued pursuant to the:

Thirtieth Supplemental Indenture, dated as of September 1, 1991; Thirty-first Supplemental Indenture, dated as of December 15, 1991; Thirty-second Supplemental Indenture, dated as of January 5, 1993; Thirty-third Supplemental Indenture, dated as of May 1, 1995; Thirty-fourth Supplemental Indenture, dated as of November 1, 1996; Thirty-fifth Supplemental Indenture, dated as of June 18, 1998; and Thirty-sixth Supplemental Indenture, dated as of August 15, 2001;

WHEREAS, at the date hereof there were outstanding First Mortgage Bonds of the Company issued under the Indenture, of 7 series in the principal amounts set forth below (including Collateral Bonds):

                                        AMOUNT              AMOUNT
    DESIGNATION OF SERIES          INITIALLY ISSUED       OUTSTANDING
    ---------------------          ----------------       -----------
First Mortgage Bonds
  (Secured Term Notes, Series A)
   7-1/2% Series due 2020             10,000,000            9,578,000
   6-3/4% Series due 2023             20,000,000           15,100,000

First Mortgage Bonds
  (Secured Term Notes, Series B)
  8-1/4% Series due 2014              80,000,000           80,000,000
  7-1/2% Series due 2020              20,000,000           18,833,000
  7% Series due 2025                  40,000,000           40,000,000

First Mortgage Bonds
  (Secured Term Notes, Series B)
  6.72% Series due 2003                4,150,000            4,150,000
  6.80% Series due 2003               15,850,000           15,850,000
  7.15% Series due 2006               40,000,000           40,000,000
  7.06% Series due 2012               40,000,000           40,000,000

First Mortgage Bonds
  (Secured Medium-Term Notes,
Series C)
  7.21% Series due 2007               30,000,000           30,000,000
  7.60% Series due 2017               15,000,000           14,604,000

Collateral Bonds
  (Remarketable Securities)

  Collateral Series A                 75,000,000           75,000,000
  Collateral Series B                 75,000,000           75,000,000

  (Senior Notes)
  Collateral Series C                 55,000,000           52,354,000
  Collateral Series D                 55,000,000           55,000,000
  6 1/8% Collateral                  200,000,000          200,000,000
  Bonds Due 2008


         and

WHEREAS, the Company desires in and by this Supplemental Indenture to establish an issue of bonds to be issued under the Indenture of the series established under the Thirty-fifth Supplemental Indenture, to designate the terms thereof, to specify the particulars necessary to describe and define the same and to specify such other provisions and agreements in respect thereof as are in the Indenture provided or permitted; and

WHEREAS, all the conditions and requirements necessary to make this Supplemental Indenture, when duly executed and delivered, a valid, binding and legal instrument in accordance with its terms and for the purposes herein expressed, have been done, performed and fulfilled, and the execution and delivery of this Supplemental Indenture in the form and with the terms hereof have been in all respects duly authorized;

NOW, THEREFORE, in consideration of the premises and in further consideration of the sum of One Dollar in lawful money of the United States of America paid to the Company by the Trustee at or before the execution and delivery of this Thirty-seventh Supplemental Indenture, the receipt whereof is hereby acknowledged, and of other good and valuable consideration, it is agreed by and between the Company and the Trustee as follows:

ARTICLE I
ESTABLISHMENT OF AN ISSUE OF
FIRST MORTGAGE BONDS, OF THE SERIES
DESIGNATED AND DISTINGUISHED AS "COLLATERAL BONDS"

SECTION 1 There is hereby established an issue of bonds to be issued under and secured by the Indenture, to be known as "First Mortgage Bonds," designated and distinguished as "Collateral Bonds" of the Company (herein collectively sometimes called the "Collateral Bonds") of the series established under the Thirty-fifth Supplemental Indenture. The Collateral Bonds may be issued without limitation as to aggregate principal amount except as provided in the Indenture (including the Thirty-fifth Supplemental Indenture) and in this Supplemental Indenture. The Collateral Bonds shall be registered bonds without coupons and shall be dated as of the date of the authentication thereof by the Mortgage Trustee.

A separate issue of Collateral Bonds, designated "5.70% Collateral Bonds due 2033," is being issued by the Company hereunder contemporaneously with the issuance of a separate series of senior debt securities of the Company designated as the Company's "5.70% Senior Notes, 2003 Series A due 2033" (the "Senior Notes") and is being issued and assigned and delivered to Citibank, N.A., as trustee (in such capacity, together with any

successor trustee(s), the "Senior Trustee") under the Indenture, dated as of June 1, 1998, as amended, supplemented and modified, governing such senior debt securities (as so amended, supplemented and modified, the "Senior Indenture"), in such capacity, as collateral for the benefit of the holders of the Senior Notes. The series of such senior debt securities collateralized by any Collateral Bonds issued hereunder shall be referred to as the "Related Notes" with respect to such Collateral Bonds.

The issue of Collateral Bonds established hereby shall bear interest at such rate or rates and be payable on such date or dates, shall mature and be subject to mandatory or optional redemption on such date or dates and shall have such other terms and provisions not inconsistent with the Indenture as are set forth in the form of Collateral Bond, and the form of Trustee's Certificate to be endorsed on such bonds, as are set forth substantially in the following forms respectively (herein sometimes called the "Bond Form"):

No. R-1
Principal Amount

$200,000,000

MICHIGAN CONSOLIDATED GAS COMPANY
FIRST MORTGAGE BONDS, 5.70% COLLATERAL BONDS DUE 2033
being a series of
FIRST MORTGAGE BONDS

ORIGINAL ISSUE DATE: FEBRUARY 20, 2003

MATURITY DATE: MARCH 15, 2033

THE FIRST MORTGAGE BONDS, 5.70% COLLATERAL BONDS DUE 2033 (HEREINAFTER, "COLLATERAL BONDS"), REPRESENTED BY THIS CERTIFICATE ARE BEING ISSUED AND DELIVERED BY THE COMPANY TO CITIBANK, N.A., AS TRUSTEE (IN SUCH CAPACITY, THE "SENIOR TRUSTEE") UNDER AN INDENTURE, DATED AS OF JUNE 1, 1998, BETWEEN THE COMPANY AND THE SENIOR TRUSTEE, AS AMENDED, SUPPLEMENTED AND MODIFIED FROM TIME TO TIME AND AS SUPPLEMENTED BY THE SUPPLEMENTAL INDENTURE THERETO DATED AS OF FEBRUARY 15, 2003 (AS SO AMENDED, SUPPLEMENTED AND MODIFIED, THE "SENIOR INDENTURE"). THE

COLLATERAL BONDS ARE TO BE HELD IN TRUST AS COLLATERAL FOR THE BENEFIT OF THE HOLDERS OF $200,000,000 AGGREGATE PRINCIPAL AMOUNT OF 5.70% SENIOR NOTES, 2003 SERIES A DUE 2033 (THE "RELATED NOTES") ISSUED PURSUANT TO THE SENIOR INDENTURE.

THE COLLATERAL BONDS MAY NOT BE SOLD OR OTHERWISE TRANSFERRED (EXCEPT TO A SUCCESSOR TRUSTEE UNDER THE SENIOR INDENTURE) UNTIL THE EARLIER OF THE RELEASE DATE (AS DEFINED BELOW) OR THE PRIOR RETIREMENT OF THE RELATED NOTES THROUGH REDEMPTION, REPURCHASE OR OTHERWISE.

THE INTEREST RATE ON THE COLLATERAL BONDS SHALL AT ALL TIMES BE IDENTICAL TO THAT OF, AND SHALL BE ESTABLISHED IN THE MANNER SET FORTH IN, THE RELATED NOTES.

THE INTEREST PAYMENT DATES IN RESPECT OF THE COLLATERAL BONDS SHALL AT ALL TIMES BE IDENTICAL TO THOSE OF, AND SHALL BE ESTABLISHED IN THE MANNER SET FORTH IN, THE RELATED NOTES.

THE COMPANY SHALL MAKE PAYMENTS OF THE PRINCIPAL OF, AND PREMIUM, IF ANY, AND INTEREST ON, THE COLLATERAL BONDS, TO THE SENIOR TRUSTEE, WHICH PAYMENTS SHALL BE APPLIED BY THE SENIOR TRUSTEE TO THE SATISFACTION OF OBLIGATIONS ON THE RELATED NOTES.

THE MATURITY DATE SPECIFIED ABOVE IS ALSO THE MATURITY DATE OF THE RELATED NOTES.

MICHIGAN CONSOLIDATED GAS COMPANY (hereinafter called the "Company"), a corporation of the State of Michigan, for value received, hereby promises to pay to CITIBANK, N.A., as trustee for the benefit of the holders of the Related Notes, or registered assigns (in such capacity, the "Senior Trustee"), the sum of Two Hundred Million Dollars ($200,000,000) on the Maturity Date specified above, at the corporate trust office of the Mortgage Trustee hereinafter named in the Borough of Manhattan, The City of New York, New York, or at the principal office of any successor in trust, in lawful money of the United States of America, and to pay interest thereon at the Interest Rate(s) from time to time specified in or determined pursuant to the Related Notes, in like lawful money payable at the office or agency of the Company in the Borough of Manhattan, The City of New York, New York on such interest

payment date(s) and on the Maturity Date (each an "Interest Payment Date") as provided in the Related Notes, from the Original Issue Date specified above or from the most recent Interest Payment Date to which interest has been paid, commencing on September 15, 2003, until the Company's obligation with respect to the payment of such principal sum shall be discharged as provided in the Indenture hereinafter mentioned and the Senior Indenture. If the date of the Collateral Bonds represented by this certificate is after a Record Date (as defined below) with respect to any Interest Payment Date and prior to such Interest Payment Date, then payment of interest shall commence on the second Interest Payment Date succeeding such date. If the Company shall default in the payment of interest due on any Interest Payment Date, then interest shall be payable from the next preceding Interest Payment Date to which interest has been paid, or, if no such interest has been paid on the Collateral Bonds represented by this certificate, from the Original Issue Date. So long as there is no existing default in the payment of interest, the person in whose name the Collateral Bonds represented by this certificate were registered at the close of business on the relevant Record Date with respect to an Interest Payment Date shall be entitled to receive the interest payable on such Interest Payment Date, except that if the Company shall default in the payment of interest due on such Interest Payment Date, such defaulted interest shall be paid to the person in whose name the Collateral Bonds represented by this Certificate are registered on the Record Date for the Interest Payment Date fixed by the Company for the payment of such defaulted interest, provided that in no case shall such Record Date be less than ten days after notice thereof shall have been mailed to all registered holders of Collateral Bonds. The term "Record Date" as used herein with respect to any Interest Payment Date otherwise shall mean the fifteenth calendar (whether or not a Business Day) prior to such Interest Payment Date.

"Business Day" means any day other than a day on which banking institutions in The State of New York or the State of Michigan are authorized or obligated pursuant to law or executive order to close. In the event that any Interest Payment Date, redemption date or maturity date is not a Business Day, then the required payment of principal, premium, if any, and interest will be made on the next succeeding day that is a Business Day (and without any interest or other payment in respect of any such delay).

The bonds represented by this certificate, of the series hereinafter specified, are bonds of the Company (herein called the "bonds") known as its "First Mortgage Bonds," issued and to be issued in one or more series under, and all equally and ratably secured by, an Indenture of Mortgage and Deed of Trust dated as of March 1, 1944, duly executed by the Company to City Bank Farmers Trust Company (now known as Citibank, N.A., successor trustee, as "Mortgage Trustee") and Ralph E. Morton as restated in Part II of the Twenty-ninth

Supplemental Indenture dated as of July 15, 1989, which became effective on April 1, 1994, to which indenture and all indentures supplemental thereto executed on and after July 15, 1989 reference is hereby made for a description of the property mortgaged and pledged, the nature and extent of the security, the terms and conditions upon which the bonds are, and are to be, issued and secured, and the rights of the holders of the bonds and of the Mortgage Trustee in respect of such security (which indenture and all indentures supplemental thereto, including the Thirty-seventh Supplemental Indenture dated as of February 15, 2003, are hereinafter collectively called the "Original Indenture"). As provided in the Original Indenture, the bonds may be for various principal sums and are issuable in series, which may mature at different times, may bear interest at different rates and may otherwise vary as therein provided. The bonds represented by this certificate are part of a Series designated "Collateral Bonds," herein called Collateral Bonds, created by the Thirty-fifth Supplemental Indenture, dated as of June 18, 1998, as supplemented by the Thirty-seventh Supplemental Indenture dated as of February 15, 2003, as provided for in the Indenture.

With the consent of the Company and to the extent permitted by and as provided in the Indenture and the Senior Indenture, the rights and obligations of the Company and/or the rights of the holders of the issue of Collateral Bonds established by the Thirty-seventh Supplemental Indenture and/or the terms and provisions of the Indenture may be modified or altered by such affirmative vote or votes of the holders of the Related Notes then outstanding as are specified in the Senior Indenture.

The Collateral Bonds shall be redeemed if and to the extent Related Notes are redeemed, as provided in the Senior Indenture with respect to the Related Notes and in the Related Notes.

In case an Event of Default as defined in the Indenture or the Senior Indenture shall occur, the principal of the Collateral Bonds may become or be declared due and payable in the manner, with the effect, and subject to the conditions provided in the Indenture and the Senior Indenture.

The Senior Trustee has agreed pursuant to the Senior Indenture to hold the Collateral Bonds as collateral for the benefit of the holders of the Related Notes under all circumstances and not to transfer (except to a successor trustee) such Collateral Bonds until the earlier of the Release Date or the prior retirement of the Related Notes through redemption, repurchase or otherwise. "Release Date" means the date on which all First Mortgage Bonds of the Company issued and outstanding under the Original Indenture, other than the Collateral Bonds, have been retired (at, before or after the maturity thereof) through payment,

redemption or otherwise provided that no default or event of default has occurred and is continuing under the Senior Indenture. On the Release Date, the Senior Trustee shall deliver to the Company for cancellation all Collateral Bonds, and the Company shall cause the Senior Trustee to provide notice to all holders of Related Notes of the occurrence of the Release Date. As a result, on the Release Date, the Collateral Bonds shall cease to secure the Related Notes, and, at the option of the Company, the Related Notes, either (i) will become unsecured general obligations of the Company or (ii) will be secured by substituted Collateral Bonds. Following the Release Date, the Company shall cause the Indenture to be closed, and the Company shall not issue any additional Collateral Bonds to be issued thereunder. From and after the Release Date, the Company's obligations in respect of the Collateral Bonds shall be satisfied and discharged.

No recourse shall be had for the payment of the principal of, or the interest on, the Collateral Bonds, or for any claim based hereon or otherwise in respect of the Collateral Bonds or the Indenture, the Senior Indenture or any indenture supplemental to either thereof, or against any incorporator, stockholder, director or officer, past, present or future, of the Company, as such, or any predecessor or successor corporation, either directly or through the Company or any such predecessor or successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability, whether at common law, in equity, by any constitution, statute or otherwise, of incorporators, stockholders, directors or officers being waived and released by the owner hereof and every owner of any Related Note by the acceptance of the Collateral Bonds or such Related Note, as the case may be, and as part of the consideration for the issue thereof, and being likewise waived and released pursuant to the Indenture and the Senior Indenture.

This bond shall not be valid or become obligatory for any purpose unless and until the certificate of authentication hereon shall have been manually executed by the Mortgage Trustee or its successor in trust under the Indenture.

IN WITNESS WHEREOF, MICHIGAN CONSOLIDATED GAS COMPANY has caused this certificate to be executed under its name with the signature of its duly authorized Officer, under its corporate seal, which may be a facsimile, attested with the signature of its Assistant Corporate Secretary.

Dated: February 20, 2003

MICHIGAN CONSOLIDATED GAS COMPANY

By:______________________________
N. A. Khouri
Vice President and Treasurer

Attest:

By:_____________________________________________ Susan E. Riske, Assistant Corporate Secretary

The bonds represented by this certificate constitute Collateral Bonds of the series designated and described in the within-mentioned Indenture.

CITIBANK, N.A., as Mortgage Trustee

By:________________________________
Authorized Officer

So long as there is no existing default in the payment of interest on the Collateral Bonds, all Collateral Bonds authenticated by the Trustee after the Record Date specified for any Interest Payment Date, and prior to such Interest Payment Date (unless the issue date hereinafter specified is after such Record Date) shall be dated the date of authentication, but shall bear interest from such Interest Payment Date, and the person in whose name any Collateral Bond is registered at the close of business on any Record Date with respect to any Interest Payment Date shall be entitled to receive the interest payable on such Interest Payment Date notwithstanding any transfer or exchange of such Collateral Bond subsequent to the Record Date and on or prior to such Interest Payment Date, except if and to the extent the Company shall default in the payment of the interest due on such Interest Payment Date, in which case such defaulted interest shall be paid to the person in whose name such Collateral Bond is registered on the Record Date for the special Interest Payment Date fixed by the Company for the payment of such defaulted interest, provided that in no case shall such Record Date be less than ten days after notice thereof shall have been mailed to all registered holders of Collateral Bonds; and provided that interest payable on a maturity date shall be payable to the person to whom the principal thereof is payable. If the issue date of any Collateral Bond is after such Record Date, such Collateral Bond shall bear interest from the issue date but payment of interest shall commence on the second Interest Payment Date next succeeding the issue date. Any notice which is mailed as herein provided shall be conclusively presumed to have been properly and sufficiently given on the date of such mailing, whether or not the holder receives notice.

The terms "Interest Payment Date", "Record Date" and "Business Day" as used herein are defined in the Bond Form.

The term "issue date" as used herein with respect to the issue of Collateral Bonds established hereby shall mean the date of first authentication of such Collateral Bonds.

As used in this Section 1, the term "default in the payment of interest" means failure to pay interest on the applicable Interest Payment Date disregarding any period of grace permitted by Section 9.01 of the Indenture.

The Company shall make payments of the principal of, and premium or interest on, the Collateral Bonds to the Senior Trustee, which payments shall be applied by the Senior Trustee to satisfaction of obligations on the Related Notes in respect of such Collateral Bonds.

SECTION 2. The issue of Collateral Bonds established hereby shall be redeemed if and to the extent the Related Notes with respect to such

Collateral Bonds are redeemed, as provided in the Senior Indenture and in such Related Notes. The redemption price in respect of any Collateral Bonds (including principal, premium, if any, and interest thereon) shall be the redemption price applicable to the Related Notes with respect to such Collateral Bonds. Any notice required to be furnished to the holders of the Collateral Bonds or the Trustee relating to the redemption of such Collateral Bonds shall be considered furnished by the delivery of appropriate notice to the holders of the Related Notes or the Senior Trustee, as the case may be, as provided in the Senior Indenture and the Related Notes with respect to such Collateral Bonds. Any redemption payment made by the Company on the Related Notes (whether for principal, premium, if any, or interest) shall be applied by the Senior Trustee as payment of the redemption price in respect of the correspondingly redeemed Collateral Bonds. In the event the Related Notes with respect to the issue of Collateral Bonds established hereby are redeemed in part, an equivalent aggregate principal amount of the issue of Collateral Bonds established hereby shall be so redeemed, the Senior Trustee, as holder of the Collateral Bonds as collateral for such Related Notes, shall deliver to the Mortgage Trustee for cancellation an equivalent principal amount of the issue of Collateral Bonds established hereby corresponding to the Related Notes so redeemed, and the Company shall execute and the Mortgage Trustee shall authenticate and deliver, without charge, to the Senior Trustee, as holder thereof, one or more new Collateral Bonds of authorized denominations for the unredeemed balance of any Collateral Bonds surrendered for redemption in connection with the redemption of the Related Notes.

SECTION 3. The Collateral Bonds shall be registered bonds without coupons. The Mortgage Trustee shall be the registrar and paying agent for the Collateral Bonds, which duties it hereby accepts. Collateral Bonds may be issued in the denomination of $1,000 or any integral multiple thereof.

SECTION 4. As further provided in the Bond Form, the Collateral Bonds shall not be assignable or transferable except as may be set forth under Article IV of the Senior Indenture, or, subject to compliance with applicable law, as may be involved in the course of the exercise of rights and remedies consequent upon an Event of Default under the Senior Indenture. Subject to the foregoing, the Collateral Bonds shall be exchangeable upon surrender thereof at the corporate trust office of the Trustee in the Borough of Manhattan, The City of New York, New York, for registered bonds of the same aggregate principal amount and other terms, but of different authorized denomination or denominations, such exchanges to be made without service charge (except for any stamp tax or other governmental charge).

Every bond so surrendered shall be accompanied by a proper transfer power duly executed by the registered owner or by duly authorized attorney transferring such bond to the Company, and the signature to such transfer power shall be guaranteed to the satisfaction of the Trustee. All bonds so surrendered shall be forthwith canceled and delivered to or upon the order of the Company. All bonds executed, authenticated and delivered in exchange for bonds so surrendered shall be valid obligations of the Company, evidencing the same debt as the bonds surrendered, and shall be secured by the same lien and be entitled to the same benefits and protection as the bonds in exchange for which they are executed, authenticated and delivered.

The Company shall not be required to make any such exchange or any registration of transfer (1) during a period of fifteen days next preceding any Interest Payment Date, but only if there is an existing default in the payment of interest on the Collateral Bonds on which such payment is due or (2) after the bond so presented for exchange or registration of transfer, or any portion thereof, has been called for redemption and notice thereof given to the registered owner.

SECTION 5. Pending the preparation of definitive Collateral Bonds, the Company may from time to time execute, and upon its written order, the Trustee shall authenticate and deliver, in lieu of such definitive bonds and subject to the same provisions, limitations and conditions, one or more temporary bonds, in registered form, of any denomination specified in the written order of the Company for the authentication and delivery thereof, and with such omissions, insertions and variations as may be determined by the Board of Directors of the Company. Such temporary bonds shall be substantially of the tenor of the bonds to be issued as herein before recited.

If any such temporary Collateral Bonds shall at any time be so authenticated and delivered in lieu of definitive bonds, the Company shall upon request at its own expense prepare, execute and deliver to the Trustee and thereupon, upon the presentation and surrender of temporary bonds, the Trustee shall authenticate and deliver in exchange therefor, without charge to the holder, definitive bonds of the same series and other terms, if any, and for the same principal sum in the aggregate as the temporary bonds surrendered. All temporary bonds so surrendered shall be forthwith canceled by the Trustee and delivered to or upon the order of the Company. Until exchanged for definitive bonds the temporary bonds shall in all respects be entitled to the lien and security of the Indenture and all supplemental indentures.

ARTICLE II
ISSUE OF COLLATERAL BONDS

The Company hereby increases the principal amount of Collateral Bonds of the Thirty-second Series issuable under the Indenture to $700,000,000, in addition to the aggregate principal amount of Collateral Bonds previously issued, subject to change from time to time as permitted by the provisions of the Indenture, without the consent of the holders of the Collateral Bonds, and subject further to the provisions of the Indenture with respect to exchanges and replacements of bonds. Collateral Bonds in the aggregate principal amount of $200,000,000 in respect of the Related Notes may be executed, authenticated and delivered from time to time as permitted by the provisions of the Indenture, including with respect to exchange and replacement of bonds. The Company further may, without the consent of the holders of the Collateral Bonds, "reopen" the issue of Collateral Bonds established hereby so as to increase the aggregate principal amount of such Collateral Bonds outstanding under the Indenture in compliance with the procedures set forth in the Indenture, to equal the aggregate principal amount of Related Notes outstanding upon a "reopening" of such series, so long as any such additional Collateral Bonds have the same tenor and terms as the issue of Collateral Bonds established hereby.

ARTICLE III
THE TRUSTEE

The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture or the due execution hereof by the Company, or for or in respect of the recitals and statements contained herein, all of which recitals and statements are made solely by the Company.

Except as herein otherwise provided, no duties, responsibilities or liabilities are assumed, or shall be construed to be assumed, by the Trustee by reason of this Supplemental Indenture other than as set forth in the Indenture and this Supplemental Indenture is executed and accepted on behalf of the Trustee, subject to all the terms and conditions set forth in the Indenture, as fully to all intents as if the same were herein set forth at length.

ARTICLE IV
MISCELLANEOUS PROVISIONS

Except insofar as herein otherwise expressly provided, all the provisions, terms and conditions of the Indenture shall be deemed to be incorporated in, and made a part of, this Thirty-seventh Supplemental Indenture

and the Twenty-ninth Supplemental Indenture dated as of July 15, 1989, by the Thirtieth Supplemental Indenture dated as of September 1, 1991, by the Thirty-first Supplemental Indenture dated as of December 15, 1991, by the Thirty-second Supplemental Indenture dated as of January 5, 1993, by the Thirty-third Supplemental Indenture dated as of May 1, 1995, by the Thirty-fourth Supplemental Indenture dated as of November 1, 1996, by the Thirty-fifth Supplemental Indenture dated as of June 18, 1998, by the Thirty-sixth Supplemental Indenture dated as of August 15, 2001 and by this Supplemental Indenture is in all respects ratified and confirmed; and the Indenture and said Supplemental Indentures shall be read, taken and construed as one and the same instrument.

Except to the extent specifically provided therein, no provision of this Supplemental Indenture or any future supplemental indenture is intended to modify, and the parties do hereby adopt and confirm, the provisions of Section 318(c) of the Trust Indenture Act, which amend and supersede provisions of the Indenture in effect prior to November 15, 1990.

Nothing in this Supplemental Indenture is intended, or shall be construed, to give to any person or corporation, other than the parties hereto and the holders of Collateral Bonds issued and to be issued under and secured by the Indenture, any legal or equitable right, remedy or claim under or in respect of this Supplemental Indenture, or under any covenant, condition or provision herein contained, all the covenants, conditions and provisions of this Supplemental Indenture being intended to be, and being, for the sole and exclusive benefit of the parties hereto and of the holders of bonds issued and to be issued under the Indenture and secured thereby.

All covenants, promises and agreements in this Supplemental Indenture contained by or on behalf of the Company shall bind its successors and assigns whether so expressed or not.

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

IN WITNESS WHEREOF, MICHIGAN CONSOLIDATED GAS COMPANY has caused this Supplemental Indenture to be executed by its duly authorized Officer, and its corporate seal to be hereunto affixed, and Citibank, N.A., as Mortgage Trustee as aforesaid, has caused the same to be executed by one of its authorized signatories and its corporate seal to be hereunto affixed, on the respective dates of their acknowledgments hereinafter set forth, as of the date and year first above written.

MICHIGAN CONSOLIDATED GAS COMPANY

By:  /s/ N. A. Khouri
     Name: N. A. Khouri
     Title: Vice President and Treasurer

Signed, sealed, acknowledged and delivered by MICHIGAN CONSOLIDATED GAS COMPANY in the presence of:

/s/ K. Hier
K. Hier

/s/ F. Ginste
F. Ginste

State of Michigan }
} ss.
County of Wayne }

The foregoing instrument was acknowledged before me this 15th day of February, 2003, by N. A. Khouri, of MICHIGAN CONSOLIDATED GAS COMPANY, a Michigan corporation, on behalf of the corporation.

/s/Andrea L. Campau                                /s/Deborah Dub
ANDREA L. CAMPAU                                   DEBORAH DUB
Notary Public, Wayne County, MI                    Notary Public, Oakland
                                                     County, MI
My Commission Expires                              My Commission Expires
May 10, 2005                                       11-02-2005

Citibank, N.A., as Mortgage Trustee,

By:/s/Wafaa Orfy
      Name: Wafaa Orfy
      Title: Vice President

Signed, sealed, acknowledged and
delivered by CITIBANK, N.A.
in the presence of:

/s/John J. Byrnes
John J. Byrnes

/s/Nancy Forte
Nancy Forte

State of New York          }
                           } ss.
County of New York         }

The foregoing instrument was acknowledged before me this 13th day of February, 2003, by Wafaa Orfy, as Vice President of Citibank, N.A., a national banking association, on behalf of the association, as Trustee, as in said instrument described.

/s/Jeffry Berger

JEFFRY BERGER
Notary Public, State of New York
No. 01BE5015814
Qualified in Kings County
Commission Expires July 26, 2005