EXHIBIT 10.1
                               SECOND AMENDMENT TO
                      AMENDED AND RESTATED CREDIT AGREEMENT

      This Second Amendment to Amended and Restated Credit Agreement (this
"SECOND AMENDMENT") dated as of July 16, 2004, to be effective as set forth in
Section 4 hereof, is among Comstock Resources, Inc., a Nevada corporation
("BORROWER"), the financial institutions party hereto, and Bank of Montreal, as
administrative agent and as letter of credit issuing bank.

                              PRELIMINARY STATEMENT

      A. The Borrower has entered into a certain Amended and Restated Credit
Agreement dated as of February 25, 2004, among Borrower, the lenders party
thereto (the "LENDERS"), Bank of Montreal, as administrative agent (in such
capacity, the "ADMINISTRATIVE AGENT") and as issuing bank (in such capacity, the
"ISSUING BANK"), Bank of America, N.A., as syndication agent, and Comerica Bank,
Fortis Capital Corp., and Union Bank of California, N.A., as co-documentation
agents, as amended by that certain First Amendment to Amended and Restated
Credit Agreement dated as of March 31, 2004 (such Amended and Restated Credit
Agreement, as so amended and as otherwise amended, restated or supplemented from
time to time until the date hereof, the "CREDIT AGREEMENT").

      B. The Borrower and Comstock Offshore, LLC ("COL") intend to enter into
(i) a certain Contribution Agreement dated as of July 1, 2004 (the "BDA
CONTRIBUTION AGREEMENT"), and (ii) a certain Operating Agreement of Bois d'Arc
Energy, LLC dated as of July 1, 2004 (the "BDA OPERATING AGREEMENT"; and
together with the BDA Contribution Agreement and all other documents
contemplated thereby, collectively, the "BDA FORMATION DOCUMENTS"), each by and
among Bois d'Arc Energy, LLC, a Nevada limited liability company ("BOIS D'ARC
ENERGY"), Bois d'Arc Properties, LP, a Nevada limited partnership ("BOIS D'ARC
PROPERTIES"), Bois d'Arc Resources, Ltd., a Texas limited partnership, Wayne L.
Laufer, Gary W. Blackie, Haro Investments, LLC, a Texas limited liability
company and the other persons listed on the signature pages thereto
(collectively, the "BDA CONTRIBUTORS"), COL, and Borrower.

      C. Pursuant to the terms of the BDA Formation Documents, (i) COL will
contribute its interest in certain oil and gas properties described on Schedule
I attached hereto to Bois d'Arc Properties, (ii) Wayne L. Laufer and Gary W.
Blackie will contribute their respective partnership interests in Bois d'Arc
Offshore, Ltd., a Texas limited partnership and their membership interests in
Bois d'Arc Oil & Gas Company, LLC, a Texas limited liability company, to Bois
d'Arc Energy, and (iii) the BDA Contributors will contribute their respective
interests in certain oil and gas properties to Bois d'Arc Properties.

      D. The Borrower intents to enter into (i) a certain Services Agreement
with Bois d'Arc Energy pursuant to which the Borrower will provide certain
general and administrative services to the Bois d'Arc Entities and (ii) a
certain Loan Agreement dated as of July 1, 2004, among the Borrower, as lender,
and Bois d'Arc Energy, Bois d'Arc Properties and Bois d'Arc Offshore, Ltd., as
borrowers, (the "BOIS D'ARC LOAN AGREEMENT") pursuant to which the Borrower may
advance loans from time to time.



      E. The Borrower, COL and the BDA Contributors intend for Bois d'Arc Energy
to obtain financing independent of the Credit Agreement and the Bois d'Arc Loan
Agreement by conducting an initial public offering of Bois d'Arc Energy's equity
interests or by causing Bois d'Arc Energy to enter into a debt financing,
provided that if neither transaction has been consummated prior to a date
specified in the BDA Operating Agreement, the Borrower, COL and the BDA
Contributors have agreed to cause the Bois d'Arc Entities to reconvey all of
their properties to the Person that originally contributed such property to the
applicable Bois d'Arc Entity and to take such further action as may be necessary
to return each of the Borrower, COL and each BDA Contributor to a position as
near as possible to the same economic position that each such Person would have
been in had the original contributions by each such Person never occurred and
Bois d'Arc Energy never been formed.

      F. Borrower has requested that the Lenders, the Administrative Agent and
the Issuing Bank consent to the transactions contemplated by the BDA Formation
Documents and modify the Credit Agreement in certain respects to facilitate such
transactions.

      G. Subject to the terms and conditions of this Second Amendment, the
Lenders, the Administrative Agent and the Issuing Bank have agreed to enter into
this Second Amendment in order to effectuate such amendments and modifications.

      NOW, THEREFORE, in consideration of the foregoing and the mutual
agreements set forth herein, the parties agree as follows:

      Section 1. DEFINITIONS. Unless otherwise defined in this Second Amendment,
each capitalized term used in this Second Amendment (including in the
preliminary statement above) has the meaning assigned to such term in the Credit
Agreement.

      Section 2. AMENDMENT OF CREDIT AGREEMENT.

            (a) Section 1.1 of the Credit Agreement is hereby amended by
      inserting the following definitions of "BDA Contribution Agreement", "BDA
      Contributors", "BDA Formation Documents", "BDA Operating Agreement", "BDA
      Services Agreement", "BDA Unwind Transaction", "Bois d'Arc Energy", "Bois
      d'Arc Entities", "COL Contributed Properties", "Restricted Subsidiary" and
      "Unrestricted Subsidiary" in the alphabetically appropriate places
      therein.

            " "BDA Contribution Agreement" means that certain Contribution
            Agreement dated as of July 1, 2004 by and among the BDA
            Contributors, COL, and Borrower."

            " "BDA Contributors" means, collectively, Bois d'Arc Resources,
            Ltd., a Texas limited partnership, Wayne L. Laufer, Gary W. Blackie,
            Haro Investments LLC, a Texas limited liability company, and the
            other persons listed on the signature pages thereto as BDA
            Contributor."

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            " "BDA Formation Documents" means, collectively, the BDA
            Contribution Agreement, the BDA Operating Agreement and all other
            documents contemplated thereby."

            " "BDA Operating Agreement" means that certain Operating Agreement
            of Bois d'Arc Energy, LLC dated as of July 1, 2004."

            " "BDA Services Agreement" means that certain Services Agreement
            dated as of July 1, 2004, entered into between Bois d'Arc Energy and
            the Borrower with respect to the provision of certain general and
            administrative services by the Borrower to the Bois d'Arc Entities."

            " "BDA Unwind Transaction" means the dissolution and liquidation of
            Bois d'Arc Energy and the reversal or unwinding of the transactions,
            conveyances, contributions, payments, assumptions of indebtedness
            and other actions or events set forth in the BDA Contribution
            Agreement, all in accordance with, and pursuant to, the terms of
            Section 17.7 of the BDA Operating Agreement."

            " "Bois d'Arc Energy" means Bois d'Arc Energy, LLC, a Nevada limited
            liability company."

            " "Bois d'Arc Entities" means Bois d'Arc Energy, Bois d'Arc
            Properties, LP, a Nevada limited partnership, Bois d'Arc Holdings,
            LLC, a Nevada limited liability company, Bois d'Arc Offshore, Ltd.,
            a Texas limited partnership, Bois d'Arc Oil & Gas Company, LLC, a
            Texas limited liability company, and any other Subsidiary of Bois
            d'Arc Energy."

            " "COL Contributed Properties" means those Oil and Gas Properties
            described in Schedule 1.1 to the BDA Contribution Agreement."

            " "Restricted Subsidiary" means (a) each of COGI GP, COGI LP, COGI,
            COGH, COGLA, COL and, prior to the sooner to occur of (i) the
            satisfaction of each of the conditions set forth in Section 2.15 and
            (ii) the consummation of the BDA Unwind Transaction and the
            satisfaction of each of the conditions set forth in Section 2.16,
            Bois d'Arc Energy and each of the other Bois d'Arc Entities, and (b)
            each other Subsidiary of the Borrower that is not designated as an
            Unrestricted Subsidiary pursuant to Section 1.6."

            " "Unrestricted Subsidiary" means (a) from and after the
            satisfaction of each of the conditions set forth in Section 2.15,
            Bois d'Arc Energy and each of the other Bois d'Arc Entities, and (b)

                                       3


            each other Subsidiary of the Borrower designated by the Borrower as
            an Unrestricted Subsidiary in accordance with, and subject to the
            satisfaction of the conditions set forth in, Section 1.6."

            (b) Section 1.1 of the Credit Agreement is hereby further amended by
      amending and restating the definition of "Guarantor" to provide:

            " "Guarantors" means each of the Subsidiaries listed in Part (b) of
            Schedule 5.13 and each other Subsidiary of the Borrower that shall
            have executed and delivered a Guaranty to the Administrative Agent
            for the benefit of the Lenders; provided that upon the release of
            any Subsidiary's Guaranty in accordance with this Agreement, such
            Subsidiary shall thereafter be excluded from the definition of
            "Guarantors" (unless and until such Subsidiary shall thereafter
            deliver another Guaranty)."

            (c) The definition of "Material Adverse Effect" in Section 1.1 of
      the Credit Agreement is hereby amended by deleting the word "Subsidiaries"
      each place such word appears therein and inserting in place thereof the
      words "Restricted Subsidiaries".

            (d) The Credit Agreement is hereby amended by inserting the
      following new Section 1.6 immediately following the existing Section 1.5:

            "SECTION 1.6 DESIGNATION AND CONVERSION OF RESTRICTED AND
            UNRESTRICTED SUBSIDIARIES.

            (a) As of July 1, 2004 and, unless designated in writing to the
            Administrative Agent by the Borrower and approved by the
            Administrative Agent and the Majority Lenders in accordance with
            clause (b) below or, with respect to Bois d'Arc Energy and the other
            Bois d'Arc Entities only, as provided in Section 2.15, at all times
            thereafter, any Person that becomes a Subsidiary of the Borrower or
            any of its Restricted Subsidiaries shall be classified as a
            Restricted Subsidiary.

            (b) Any Subsidiary of the Borrower (including a newly formed or
            newly acquired Subsidiary) may be designated (or redesignated) as an
            Unrestricted Subsidiary if (i) the Administrative Agent shall have
            received (1) a written request from the Borrower specifying the
            applicable Subsidiary and such other information as the
            Administrative Agent may reasonably request, (2) the written consent
            of the Administrative Agent and the Majority Banks approving such
            designation, and (3) a certificate of a Responsible Officer of the
            Borrower that no Default or Event of Default shall then exist or
            would result from such designation (after giving effect to such
            designation), and (ii) such designation is deemed to be an
            Investment in an amount equal to the fair market value of

                                       4


            Borrower's direct and indirect ownership interest in such Subsidiary
            and such Investment would be permitted under Section 7.2 to be made
            at the time of such designation. Except as provided in this Section
            1.6(b) or, with respect to Bois d'Arc Energy and the other Bois
            d'Arc Entities only, as provided in Section 2.15, no Subsidiary may
            be designated (and no Restricted Subsidiary may be redesignated) as
            an Unrestricted Subsidiary.

            (c) Borrower may designate any Unrestricted Subsidiary to be a
            Restricted Subsidiary if after giving effect to such designation,
            (i) the representations and warranties of Borrower and its
            Restricted Subsidiaries contained in each of the Loan Documents are
            true and correct on and as of such date as if made on and as of the
            date of such redesignation (or, if stated to have been made
            expressly as of an earlier date, were true and correct as of such
            date), (ii) no Default or Event of Default then exists or would
            result from such redesignation (after giving effect to such
            redesignation), and (iii) the Borrower complies, or causes such
            Subsidiary to comply, with the requirements of Sections 6.16 and
            6.18."

            (e) Clause (i) of Section 2.3.1 of the Credit Agreement is hereby
      amended and restated in its entirety to provide as follows:

            "(i) Subject to the terms and conditions set forth herein, (A) the
            Issuing Bank agrees, in reliance upon the agreements of the other
            Lenders set forth in this Section 2.3, (1) from time to time on any
            Business Day during the period from the Closing Date until the
            Letter of Credit Availability Expiration Date, to issue Letters of
            Credit for the account of the Borrower and in the name of the
            Borrower or any of its Restricted Subsidiaries, and to amend or
            renew Letters of Credit previously issued by it, in accordance with
            subsection 2.3.2 below, and (2) to honor drafts under the Letters of
            Credit; and (B) the Lenders severally agree to participate in
            Letters of Credit issued for the account of the Borrower; provided
            that the Issuing Bank shall not be obligated to make any L/C Credit
            Extension with respect to any Letter of Credit, and no Lender shall
            be obligated to participate in, any Letter of Credit if as of the
            date of such L/C Credit Extension, (w) with respect to any renewal,
            extension or amendment to any previously issued Letter of Credit,
            the Restricted Subsidiary in whose name such Letter of Credit was
            originally issued (or was most recently renewed, extended or
            amended, if applicable) has become, or been redesignated as, an
            Unrestricted Subsidiary, (x) the Outstanding Amount of all L/C
            Obligations and all Loans would exceed the lesser of (A) the
            Aggregate Commitments on such date and (B) the Borrowing Base then
            in effect, (y) the aggregate Outstanding Amount of the Loans of any
            Lender, plus such Lender's Percentage Share of the

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            Outstanding Amount of all L/C Obligations would exceed the lesser of
            (A) such Lender's Commitment or (B) such Lender's Percentage Share
            of the Borrowing Base then in effect, or (z) the Outstanding Amount
            of the L/C Obligations would exceed the Letter of Credit Sublimit.
            Within the foregoing limits, and subject to the terms and conditions
            hereof, the Borrower's ability to obtain Letters of Credit shall be
            fully revolving, and accordingly the Borrower may, during the
            foregoing period, obtain Letters of Credit to replace Letters of
            Credit that have expired or that have been drawn upon and
            reimbursed."

            (f) The Credit Agreement is hereby amended by inserting the
      following new Sections 2.15 and 2.16 immediately following the existing
      Section 2.14:

            "SECTION 2.15 CONVERSION OF BOIS D'ARC ENTITIES TO UNRESTRICTED
            SUBSIDIARIES. Upon and concurrently with receipt by the
            Administrative Agent of each of the following:

            (a) all loans owed by Bois d'Arc Energy or any other Bois d'Arc
            Entity to the Borrower or any Restricted Subsidiary of the Borrower
            (other than Bois d'Arc Energy or any other Bois d'Arc Entity) have
            been repaid in cash in full; and

            (b) no Default or Event of Default then exists or would result from
            the redesignation of Bois d'Arc Energy and the other Bois d'Arc
            Entities as Unrestricted Subsidiaries; and

            (c) the sum of the Outstanding Amount of all Loans plus the
            Outstanding Amount of all L/C Obligations does not exceed 66 2/3% of
            the Borrowing Base then in effect; and

            (d) a Certificate of a Responsible Officer of the Borrower
            certifying that each of the conditions set forth in the foregoing
            clauses (a), (b) and (c) of this Section 2.15 has been satisfied and
            further certifying that Bois d'Arc Energy and each other Bois d'Arc
            Entity is redesignated as an Unrestricted Subsidiary from and as of
            the date of such Certificate; and

            (e) to the extent not previously delivered, a reserve report as of
            the most recent January 1 or July 1, prepared by, as applicable in
            accordance with Section 6.2(g), an independent engineering firm of
            recognized standing acceptable to the Majority Lenders or the
            Borrower, in either case in accordance with accepted industry
            practices and otherwise acceptable and in form and substance
            satisfactory to the Majority Lenders, with respect to all
            Hydrocarbons attributable to the Oil and Gas Properties of the
            Borrower and the Guarantors but excluding all Hydrocarbons

                                       6


            attributable to the Oil and Gas Properties of the Bois d'Arc
            Entities, and including without limitation all assets included in
            the Borrowing Base;

            then (A) Bois d'Arc Energy and each of the other Bois d'Arc Entities
            shall automatically and without further action be redesignated as
            Unrestricted Subsidiaries, (B) notwithstanding anything to the
            contrary in this Credit Agreement (including, without limitation,
            Section 2.1), the Borrower covenants and agrees that the aggregate
            Outstanding Amount of all Loans plus all L/C Obligations shall not
            exceed an amount equal to 66 2/3% of the Borrowing Base then in
            effect until such time as the Borrowing Base shall have been
            redetermined in accordance with Section 2.8 of this Agreement based
            on the reserve report delivered to the Administrative Agent and the
            Lenders pursuant to clause (b) above, (C) each Guaranty delivered by
            a Bois d'Arc Entity shall automatically be released, and (D) each
            Lender and the Issuing Bank hereby authorize the Administrative
            Agent to release all Security Documents encumbering any properties
            owned by any Bois d'Arc Entity, return all stock certificates
            evidencing equity interests of Bois d'Arc Energy and each other Bois
            d'Arc Entity then held by the Administrative Agent, if any, securing
            the Obligations of the Loan Parties and to do all things reasonably
            necessary to effectuate the release of all Liens in favor of the
            Administrative Agent for the benefit of itself, the Lenders and the
            Issuing Bank. For the avoidance of doubt, the Borrower, the
            Administrative Agent and the Lenders acknowledge that the
            redetermination of the Borrowing Base in accordance with clause (B)
            above in connection with the redesignation of the Bois d'Arc
            Entities as Unrestricted Subsidiaries shall not constitute a
            discretionary redetermination of the Borrowing Base by either the
            Borrower, on the one hand, or the Administrative Agent and the
            Lenders, on the other hand, pursuant to clause (a) of the definition
            of "Evaluation Date" and that the date of the redesignation of Bois
            d'Arc Entities as Unrestricted Subsidiaries in accordance with this
            Section 2.15 shall constitute the "Evaluation Date" for purposes of
            the redetermination of the Borrowing Base in accordance with clause
            (B) above.

            SECTION 2.16 BOIS D'ARC UNWIND TRANSACTION.

            Upon and concurrently with receipt by the Administrative Agent of
            each of the following:

            (a) each of the conditions set forth in Section 17.7 of the BDA
            Operating Agreement have occurred (and have not been waived or

                                       7


            suspended in accordance with the BDA Operating Agreement); and

            (b) a Certificate of a Responsible Officer of the Borrower
            certifying that the condition set forth in the foregoing clause (a)
            of this Section 2.16 has been satisfied and further certifying that
            no Default or Event of Default then exists or would result from the
            implementation of the BDA Unwind Transaction in accordance with the
            provisions of the BDA Operating Agreement; and

            (c) evidence reasonably satisfactory to the Administrative Agent
            that all of the properties contributed to any of the Bois d'Arc
            Entities by the Borrower or COL (including all Oil and Gas
            Properties contributed by, and all cash payments made by, the
            Borrower or COL) shall have been reconveyed or returned to the
            Borrower or COL, as applicable;

            then (A) each Guaranty delivered by a Bois d'Arc Entity shall
            automatically be released, and (B) each Lender and the Issuing Bank
            hereby authorize the Administrative Agent to release all Liens
            encumbering any properties owned by any Bois d'Arc Entity that were
            contributed by a BDA Contributor (but not Liens encumbering the COL
            Contributed Properties or any other properties contributed by the
            Borrower or COL), return all stock certificates evidencing equity
            interests of Bois d'Arc Energy and each other Bois d'Arc Entity then
            held by the Administrative Agent, if any, securing the Obligations
            of the Loan Parties and to do all things reasonably necessary to
            effectuate the foregoing."

            (g) Section 5.8 of the Credit Agreement is hereby amended by
      deleting the words "Subsidiary" and "Subsidiaries" each place such words
      appear therein and inserting in place thereof the words "Restricted
      Subsidiary" or "Restricted Subsidiaries", respectively.

            (h) Section 5.13(a) of the Credit Agreement is hereby amended and
      restated in its entirety to provide:

            "The Borrower has no Subsidiaries other than those specifically
            disclosed in Part (a) of Schedule 5.13. All Restricted Subsidiaries
            of Borrower are duly organized, validly existing and in good
            standing under the laws of their respective jurisdictions of
            organization and are duly qualified to do business in each
            jurisdiction where failure to so qualify would have an Material
            Adverse Effect. All outstanding shares of stock of each class of
            each Restricted Subsidiary of Borrower have been and will be validly
            issued and are and will be fully paid and nonassessable. Except as
            otherwise set forth on Schedule 5.13, all outstanding

                                       8


            shares of stock of each class of each Restricted Subsidiary of
            Borrower are and will be owned, beneficially and of record, by
            Borrower or a wholly-owned Subsidiary of Borrower. All outstanding
            shares of stock of each class of (i) Bois d'Arc Energy owned by the
            Borrower or any Restricted Subsidiary and (ii) each Restricted
            Subsidiary of Borrower, are and will be free and clear of any Liens
            (other than Liens permitted by Section 7.1).

            (i) The preliminary statement set forth at the beginning of Article
      VI of the Credit Agreement is hereby amended by deleting the word
      "Subsidiaries" each place such word appears therein and inserting in place
      thereof the words "Restricted Subsidiaries".

            (j) The introductory paragraph of clause (d) of Section 6.16 of the
      Credit Agreement and subclause (i) of Section 6.16(d) are hereby amended
      and restated in their entirety to provide:

            " (d) Additional Restricted Subsidiaries. Within thirty (30)
            Business Days after the Borrower or any Restricted Subsidiary
            creates, acquires or otherwise forms any other Subsidiary (other
            than a Subsidiary designated as an Unrestricted Subsidiary in
            accordance with Section 1.6(b)), the Borrower shall:

                  (i) execute and deliver, or cause each such Subsidiary owning
            any of the outstanding equity interests in such other Restricted
            Subsidiary to execute and deliver, as applicable, to the
            Administrative Agent on behalf of the Lenders, a Pledge Agreement,
            or an amendment or supplement to an existing Pledge Agreement, if
            appropriate, pursuant to which all of the outstanding equity
            interests in such other Restricted Subsidiary owned by the Borrower
            or such Restricted Subsidiary shall be pledged to the Administrative
            Agent on behalf of the Lenders, together with any certificates
            representing all equity interests so pledged, if any, and for each
            such certificate representing shares of stock, a stock power
            executed in blank;"

            (k) The Credit Agreement is hereby amended by inserting the
      following new Section 6.18 immediately following the existing Section
      6.17:

            "SECTION 6.18 UNRESTRICTED SUBSIDIARIES. The Borrower:

            (a) will cause the management, business and affairs of each of
            Borrower and its Subsidiaries to be conducted in such a manner
            (including, without limitation, by keeping separate books of
            account, maintaining separate policies of insurance and by not
            permitting Properties of Borrower and its respective Subsidiaries to
            be commingled) so that each Unrestricted Subsidiary will be

                                       9


            treated as an entity separate and distinct from Borrower and the
            Restricted Subsidiaries (except (i) with respect to the treatment
            for tax purposes of the Borrower or any Restricted Subsidiary
            holding any interest in an Unrestricted Subsidiary that is regarded
            as a partnership and (ii) for the common management/directorship
            between the Borrower and any Unrestricted Subsidiary);

            (b) except as permitted by Section 7.3(e), will not, and will not
            permit any of the Restricted Subsidiaries to, incur, assume or
            suffer to exist Guaranty Obligations or be or become liable for any
            Indebtedness of any Unrestricted Subsidiary; and

            (c) will not permit any Unrestricted Subsidiary to hold any equity
            interest in, or any Indebtedness of, the Borrower or any Restricted
            Subsidiary."

            (l) The preliminary statement set forth at the beginning of Article
      VII of the Credit Agreement is hereby amended by deleting the word
      "Subsidiaries" each place such word appears therein and inserting in place
      thereof the words "Restricted Subsidiaries".

            (m) Clause (h) of Section 7.1 of the Credit Agreement is hereby
      amended and restated in its entirety to provide:

            "(h) Liens existing pursuant to a Subordinate Mortgage to the
            extent, but only to the extent, that the properties subject to such
            Subordinate Mortgage are then, or will be prior to the recordation
            of such Subordinate Mortgage, mortgaged to the Administrative Agent
            for the benefit of the Lenders pursuant to a Mortgage."

            (n) Clauses (a), (b), (c) and (d) of Section 7.2 of the Credit
      Agreement are hereby amended and restated in their entirety to provide:

            "(a) Investments other than those permitted by subsections (b)
            through (i) existing on the date hereof and listed on Schedule 7.2;

            (b) Investments held by the Borrower or such Restricted Subsidiary
            in the form of cash equivalents;

            (c) advances to officers, directors and employees of the Borrower or
            any Restricted Subsidiary in an aggregate amount not to exceed
            $50,000 at any time outstanding, for travel, entertainment,
            relocation and analogous ordinary business purposes;

            (d) Investments constituting (1) contributions of capital (but not
            loans or advances) made by the Borrower in any Guarantor other than
            Bois d'Arc Energy or any other Bois d'Arc Entity or by any Guarantor
            in any other Guarantor other than Bois d'Arc

                                       10


            Energy or any other Bois d'Arc Entity, (2) loans or advances by the
            Borrower in any Guarantor, provided that such Investment
            constituting a loan or advance shall be evidenced by a Pledged Note
            pledged to the Administrative Agent pursuant to a Pledge Agreement
            and (3) loans or advances deemed to have been made by Bois d'Arc
            Energy to its members in lieu of the distribution of "Tax
            Distributions" (as defined in the BDA Operating Agreement) owed to
            such members by Bois d'Arc Energy;"

            (o) Section 7.2 of the Credit Agreement is hereby further amended by
      deleting the word "and" at the end of the existing clause (g) thereof,
      deleting the period at the end of the existing clause (h) thereof and
      inserting in its place "; and" and inserting the following new clause (i)
      immediately following the existing clause (h):

                  "(i) Investments in Bois d'Arc Energy and the other Bois d'Arc
            Entities pursuant to the BDA Contribution Agreement."

            (p) Clauses (c) and (d) of Section 7.3 of the Credit Agreement are
      hereby amended by deleting the word "Subsidiary" each place such word
      appears therein and inserting in place thereof the words "Restricted
      Subsidiary".

            (q) Clauses (a) and (b) of Section 7.4 of the Credit Agreement are
      hereby amended by deleting the words "Subsidiary" or "Subsidiaries" each
      place such words appear therein and inserting in place thereof the words
      "Restricted Subsidiary" or "Restricted Subsidiaries" as applicable.

            (r) Section 7.4 of the Credit Agreement is hereby further amended by
      deleting the word "and" at the end of the existing clause (b) thereof,
      deleting the period at the end of the existing clause (c) thereof and
      inserting the following new clauses (d) and (e) immediately following the
      existing clause (c):

                  "(d) COL may contribute the COL Contributed Properties to one
            or more of the Bois d'Arc Entities pursuant to and in accordance
            with the terms of the BDA Contribution Agreement; and,

                  (e) Bois d'Arc Energy and the other Bois d'Arc Entities may
            reconvey all properties contributed to any of them by Borrower, COL
            and the BDA Contributors in accordance with the terms of the BDA
            Unwind Transaction and Section 2.16."

            (s) Clause (c) of Section 7.5 of the Credit Agreement is hereby
      amended by deleting the words "Subsidiary" each place such word appears
      therein and inserting in place thereof the words "Restricted Subsidiary".

            (t) Section 7.5 of the Credit Agreement is hereby further amended by
      deleting the word "and" at the end of the existing clause (d) thereof,
      inserting the word "and"

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      immediately following the end of the existing clause (e) and inserting the
      following new clause (f) immediately following the existing clause (e):

                  "(f) Dispositions by COL of the COL Contributed Properties to
            the Bois d'Arc Entities pursuant to the terms of the BDA Formation
            Documents; provided that such assets of COL shall remain subject to
            any Liens created by Security Documents delivered pursuant to this
            Agreement until such Liens shall be released in accordance with
            Section 2.15 or Section 10.1."

            (u) Clauses (a) and (c) of Section 7.6 of the Credit Agreement are
      hereby amended by deleting the word "Subsidiary" each place such word
      appears therein and inserting in place thereof the words "Restricted
      Subsidiary".

            (v) Section 7.6 of the Credit Agreement is hereby further amended by
      inserting the word "and" immediately following the existing clause (d) and
      inserting the following new clause (e) immediately following the existing
      clause (d):

                  "(e) Restricted Payments (i) by Bois d'Arc Energy or any of
            the Bois d'Arc Entities, as applicable, to one or more of the BDA
            Contributors (and to the Borrower or any of its Restricted
            Subsidiaries to the extent not otherwise permitted) pursuant to the
            BDA Unwind Transaction and (ii) so long as Bois d'Arc Energy is
            treated as a partnership for tax purposes, Restricted Payments by
            Bois d'Arc Energy that are made solely for the purpose of paying tax
            liabilities arising from Bois d'Arc Energy's net income (which tax
            liability distributions shall not exceed the net income of Bois
            d'Arc for the periods for which such tax distributions are to be
            made multiplied by the maximum marginal tax rate under federal
            and/or state income tax laws that is applicable to any of Bois d'Arc
            Energy's members), provided that the Borrower shall give
            Administrative Agent at least 10 Business Days' prior written notice
            of each proposed distribution, together with the amount of the Bois
            d'Arc Energy's Net Income."

            (w) Section 7.10 of the Credit Agreement is hereby amended and
      restated in its entirety to provide:

            "SECTION 7.10 BURDENSOME AGREEMENTS. Enter into any Contractual
            Obligation that limits the ability (a) of any Restricted Subsidiary
            to make Restricted Payments to the Borrower or any Guarantor or to
            otherwise transfer property to the Borrower or any Guarantor other
            than Contractual Obligations imposed on Bois d'Arc Energy pursuant
            to the BDA Operating Agreement, or (b) of the Borrower or any
            Restricted Subsidiary to create, incur, assume or suffer to exist
            Liens on property of such Person,

                                       12


            in each case, other than Contractual Obligations pursuant to the
            Indenture Debt Documents to the extent listed in Schedule 7.10."

            (x) Section 7.12 of the Credit Agreement is hereby amended by
      deleting the word "Subsidiary" each place such word appears therein and
      inserting in place thereof the words "Restricted Subsidiary".

            (y) Section 7.14 of the Credit Agreement is hereby amended and
      restated in its entirety to provide:

            "SECTION 7.14 LIMITATION ON HEDGES. Enter into any commodity hedging
            or derivative transactions except Hedge Agreements related to bona
            fide hedging activities of the Borrower or any of its Restricted
            Subsidiaries in an aggregate notional amount not to exceed, with
            respect to any future calendar quarter, 100% of the Borrower's and
            its Restricted Subsidiaries' projected production of oil (for oil
            related transactions) and 100% of the Borrower's and its Restricted
            Subsidiaries' projected production of natural gas (for natural gas
            related transactions), in each case from the Oil and Gas Properties
            of the Borrower and its Restricted Subsidiaries."

            (z) The Credit Agreement is hereby amended by inserting the
      following new Section 7.15 immediately following Section 7.14 (as amended
      pursuant to this Second Amendment):

            "SECTION 7.15 AMENDMENT OF BDA FORMATION DOCUMENTS OR BOIS D'ARC
            LOAN AGREEMENT. Amend, restate, modify, supplement, waive or consent
            to any amendment, restatement, modification, supplement or waiver of
            the BDA Contribution Agreement, the BDA Operating Agreement, the BDA
            Services Agreement or the other BDA Formation Documents or the Bois
            d'Arc Loan Agreement, in each case without the consent of the
            Administrative Agent and the Majority Lenders; provided, however,
            that the consent of the Administrative Agent and the Majority
            Lenders shall not be required to the extent that any such amendment,
            restatement, modification, supplement, waiver or consent does not
            (a) have an adverse effect on the Borrower, any other Loan Party,
            the Administrative Agent or the Lenders (taking into account any
            effect that may occur or be realized after Bois d'Arc Energy has
            been redesignated as an Unrestricted Subsidiary pursuant to Section
            2.15), or (b) materially change the economic terms of such
            agreements. The Borrower shall deliver notice to the Administrative
            Agent (with sufficient copies for the Administrative Agent to
            distribute the same to the other Lenders) of any amendment,
            restatement, modification, supplement, waiver or consent to the BDA
            Contribution Agreement, the BDA

                                       13


            Operating Agreement, the BDA Services Agreement or the other BDA
            Formation Documents or the Bois d'Arc Loan Agreement for which the
            consent of the Administrative Agent and the Majority Lenders is not
            required pursuant to the foregoing proviso, as applicable, promptly
            following its effectiveness."

            (aa) Clause (l) of Section 8.1 of the Credit Agreement is hereby
      amended by deleting the word "Subsidiary" each place such word appears
      therein and inserting in place thereof the words "Restricted Subsidiary".

            (bb) Clause (h) of Section 10.1 of the Credit Agreement is hereby
      amended and restated in its entirety to provide:

            "(h) release any collateral under any of the Security Documents, or
            permit any termination, amendment, modification, waiver or release
            of any Security Document or an provision thereof, provided that,
            notwithstanding the foregoing, the consent of the Lenders shall not
            be required for any release of any collateral under any of the
            Security Documents pursuant to Sections 2.15 or 2.16 or in
            connection with a Disposition by the Borrower or any Guarantor if
            such Disposition is permitted by Section 7.5 hereof as Section 7.5
            is in effect on the Closing Date;"

            (cc) Schedule 5.13 to the Credit Agreement is hereby amended and
      restated as set forth in Attachment 1 hereto.

      Section 3. RATIFICATION. The Borrower hereby ratifies and confirms all of
the Obligations under the Credit Agreement and the other Loan Documents.

      Section 4. EFFECTIVENESS OF SECOND AMENDMENT. This Second Amendment shall
become effective as of the date first written above upon satisfaction of each of
the conditions set forth in this Section 4:

                  (a) The Administrative Agent shall have received duly executed
            counterparts of this Second Amendment from the Borrower, the Issuing
            Bank and each Lender, and duly acknowledged by each of the
            Guarantors.

                  (b) Unless waived by all the Lenders (or by the Administrative
            Agent with respect to immaterial matters or items specified in
            clause (v) or (vii) below with respect to which the Borrower has
            given assurances satisfactory to the Administrative Agent that such
            items shall be delivered promptly following the Effective Date), the
            Administrative Agent's receipt of the following, each of which shall
            be originals or facsimiles (followed promptly by originals) unless
            otherwise specified, each properly executed by a Responsible Officer
            of the signing Loan Party, each dated the Effective Date (or, in the
            case of certificates of governmental officials, a recent date before
            the Closing Date) and each in form and substance satisfactory to the
            Administrative Agent and its legal counsel:

                                       14


                              (i) executed counterparts from each of the Bois
            d'Arc Entities of a Guaranty, a ratification of the Subordination
            Agreement previously delivered by the Loan Parties, and a Security
            Agreement;

                              (ii) from (1) COL, a Pledge Agreement pursuant to
            which all of the outstanding equity interests of Bois d'Arc Energy
            owned by COL shall be pledged to the Administrative Agent on behalf
            of the Lenders, and (2) each of Bois d'Arc Energy and each other
            Bois d'Arc Entity that owns any equity interest in any other Bois
            d'Arc Entity, a Pledge Agreement, pursuant to which all of the
            outstanding equity interests in each Bois d'Arc Entity shall be
            pledged to the Administrative Agent on behalf of the Lenders,
            together in each case with stock certificates, membership interest
            certificates or such other certificated security as may be part of
            the collateral covered by the Pledge Agreement and stock powers or
            other transfer powers or instruments executed in blank for each such
            certificate, interest or security;

                              (iii) from the Borrower, an amendment or
            supplement to the existing Pledge Agreement of the Borrower,
            pursuant to which the Borrower shall pledge to the Administrative
            Agent its interest in, to and under the Bois d'Arc Loan Agreement,
            the revolving promissory note evidencing indebtedness thereunder and
            any other documents related thereto, together with the original
            revolving promissory note bearing an appropriate endorsement in
            favor of the Administrative Agent;

                              (iv) such certificates of resolutions or other
            action, incumbency certificates and/or other certificates of
            Responsible Officers of each Bois d'Arc Entity as the Administrative
            Agent may require to establish the identities of and verify the
            authority and capacity of each Responsible Officer thereof
            authorized to act as a Responsible Officer in connection with this
            Agreement and the other Loan Documents to which such Bois d'Arc
            Entity is a party;

                              (v) such evidence as the Administrative Agent may
            reasonably require to verify that each Bois d'Arc Entity is duly
            organized or formed, validly existing, in good standing and
            qualified to engage in business in each jurisdiction in which it is
            required to be qualified to engage in business, including certified
            copies of each Bois d'Arc Entities' Organization Documents,
            certificates of good standing and/or qualification to engage in
            business and, if applicable, tax clearance certificates;

                              (vi) a certificate signed by a Responsible Officer
            of the Borrower certifying (A) that the conditions specified in
            Sections 4.2(a) and (b) are satisfied as of the Effective Date, and
            (B) that there has been no event or circumstance since the date of
            the Initial Audited

                                       15


            Financial Statements which has or could be reasonably expected to
            have a Material Adverse Effect;

                              (vii) an opinion of counsel to each of the Bois
            d'Arc Entities substantially in the form of Exhibits F-1 and F-2 to
            the Credit Agreement;

                              (viii) evidence that all existing credit
            facilities to which any Bois d'Arc Entity is a party or a guarantor
            (including, without limitation, all credit facilities between or
            among any Bois d'Arc Entity or BDA Contributor, as borrower(s), and
            AmSouth Bank, as lender, but expressly excluding the Bois d'Arc Loan
            Agreement) have been, or concurrently with the Effective Date are
            being, terminated and all Liens securing obligations under any such
            existing credit facilities have been, or concurrently with the
            Effective Date are being, released;

                              (ix) a certificate of insurance of the Borrower
            and its Subsidiaries (including each of the Bois d'Arc Entities)
            evidencing that the Borrower and its Subsidiaries (including each of
            the Bois d'Arc Entities) are carrying insurance in accordance with
            Section 6.7 of the Credit Agreement and that such insurance is in
            full force and effect;

                              (x) a certificate from an Responsible Officer of
            each of Borrower and Bois d'Arc Energy, dated as of the Effective
            Date, certifying that attached thereto is a true and correct copy of
            the BDA Formation Documents and the Bois d'Arc Loan Agreement and
            certifying that:

                        (1) On and as of the Effective Date, and except as
                  otherwise previously disclosed pursuant to the provisions
                  hereof, there does not exist any judgment, order or injunction
                  or other restraint issued or filed, or any government,
                  corporate, contractual or legal restriction that could
                  reasonably be expected to impair materially the right or
                  ability of each of Borrower, COL, Bois d'Arc Energy and the
                  BDA Contributors to effect the BDA Formation Transaction
                  substantially in accordance with the terms and conditions of
                  the BDA Formation Documents; and

                        (2) Each of Borrower, COL, Bois d'Arc Energy, each other
                  Bois d'Arc Entity and each BDA Contributor, as the case may
                  be, have received all governmental and third party approvals
                  necessary in connection with the DBA Formation Transaction and
                  such approvals are in full force and effect;

            (c) search reports in such jurisdictions as the Administrative Agent
      may reasonably request, listing all effective financing statements or
      other Lien filings that name any of the Bois d'Arc Entities or any of Bois
      d'Arc Resources,

                                       16


      Ltd., a Texas limited partnership, Wayne L. Laufer, Gary W. Blackie or
      Haro Investments LLC, a Texas limited liability company, as a debtor; and

            (d) The Borrower shall have confirmed and acknowledged to the
      Administrative Agent, the Issuing Bank and the Lenders, and by its
      execution and delivery of this Second Amendment the Borrower does hereby
      confirm and acknowledge to the Administrative Agent, the Issuing Bank and
      the Lenders, that (i) the execution, delivery and performance of this
      Second Amendment has been duly authorized by all requisite corporate
      action on the part of the Borrower; (ii) the Credit Agreement and each
      other Loan Document to which it is a party constitute valid and legally
      binding agreements enforceable against the Borrower in accordance with
      their respective terms, except as such enforceability may be limited by
      bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer or
      other similar laws relating to or affecting the enforcement of creditors'
      rights generally and by general principles of equity, (iii) the
      representations and warranties by the Borrower contained in the Credit
      Agreement and in the other Loan Documents are true and correct on and as
      of the date hereof in all material respects as though made as of the date
      hereof, and (iv) no Default or Event of Default exists under the Credit
      Agreement or any of the other Loan Documents.

      Section 5. GOVERNING LAW. This Second Amendment shall be governed by, and
construed in accordance with, the laws of the State of New York (without giving
effect to the principles thereof relating to conflicts of law except section
5-1401 of the New York General Obligations Law).

      Section 6. MISCELLANEOUS. (a) On and after the effectiveness of this
Second Amendment, each reference in each Loan Document to "this Agreement",
"this Note", "this Mortgage", "hereunder", "hereof" or words of like import,
referring to such Loan Document, and each reference in each other Loan Document
to "the Credit Agreement", "the Notes", "the Mortgages", "thereunder", "thereof"
or words of like import referring to the Credit Agreement, the Notes, or the
Mortgage or any of them, shall mean and be a reference to such Loan Document,
the Credit Agreement, the Notes, the Mortgage or any of them, as amended or
otherwise modified by this Second Amendment; (b) each reference in each
Guaranty, Security Agreement or Pledge Agreement executed prior to the date
hereof to a "Subsidiary" or "Subsidiaries" of the Borrower shall be amended to
be a reference to a "Restricted Subsidiary" or "Restricted Subsidiary" of the
Borrower (except with respect to Sections 3.4 and 3.10 in each Pledge Agreement
executed prior to the date hereof, with respect to which such reference shall
not be so amended); (c) the execution, delivery and effectiveness of this Second
Amendment shall not, except as expressly provided herein, operate as a waiver of
any default of the Borrower or any other Loan Party or any right, power or
remedy of the Administrative Agent, the Issuing Bank and the Lenders under any
of the Loan Documents, nor constitute a waiver of any provision of any of the
Loan Documents; (d) this Second Amendment may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement; and (e) delivery of an
executed counterpart of a signature page to this Second Amendment by telecopier
shall be effective as delivery of a manually executed counterpart of this Second
Amendment.

                                       17


      Section 7. FINAL AGREEMENT. THE CREDIT AGREEMENT AND THE OTHER LOAN
DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS
OF THE PARTIES. THERE ARE NO ORAL AGREEMENTS BETWEEN THE PARTIES.

                                       18


      IN WITNESS WHEREOF, the parties hereto have caused this Second Amendment
to be executed by its officers thereunto duly authorized as of the date first
above written.

                               BORROWER:

                               COMSTOCK RESOURCES, INC.,
                               a Nevada corporation

                               By:    /s/ Roland O. Burns
                                  ----------------------------------------------
                               Name:  Roland O. Burns
                               Title: Chief Financial Officer

                               ADMINISTRATIVE AGENT, ISSUING BANK
                               AND LENDERS:

                               BANK OF MONTREAL,
                               as Administrative Agent, Issuing Bank and Lender

                               By:    /s/ James V. Ducote
                                  ----------------------------------------------
                               Name:  James V. Ducote
                               Title: Director

                               BANK OF AMERICA, N.A.,

                               By:    /s/ Jeffrey Rathkamp
                                  ----------------------------------------------
                               Name:  Jeffrey Rathkamp
                               Title: Director

                               FORTIS CAPITAL CORP.

                               By:    /s/ David Montgomery
                                  ----------------------------------------------
                               Name:  David Montgomery
                               Title: Senior Vice President

                               By:    /s/ Darrell W. Holley
                                  ----------------------------------------------
                               Name:  Darrell W. Holley
                               Title: Managing Director

                                      S - 1



                               COMERICA BANK

                               By:    /s/ Peter L. Sefzik
                                  ----------------------------------------------
                               Name:  Peter L Sefzik
                               Title: Vice President -  Texas Division

                               UNION BANK OF CALIFORNIA, N.A.

                               By:    /s/ Sean Murphy
                                  ----------------------------------------------
                               Name:  Sean Murphy
                               Title: Vice President

                               THE BANK OF NOVA SCOTIA

                               By:    /s/ Nadine Bell
                                  ----------------------------------------------
                               Name:  Nadine Bell
                               Title: Senior Manager

                               BANK OF SCOTLAND

                               By:    /s/ Amena Nabi
                                  ----------------------------------------------
                               Name:  Amena Nabi
                               Title: Assistant Vice President

                               COMPASS BANK

                               By:    /s/ Dorothy Marchand
                                  ----------------------------------------------
                               Name:  Dorothy Marchand
                               Title: Senior Vice President

                                      S - 2



                               CALYON NEW YORK BRANCH, as Successor
                               by Consolidation to Credit Lyonnais New York
                               Branch

                               By:    /s/ Olivier Audemard
                                  ----------------------------------------------
                               Name:  Olivier Audemard
                               Title: Managing Director

                               HIBERNIA NATIONAL BANK

                               By:    /s/ Daria Mahoney
                                  ----------------------------------------------
                               Name:  Daria Mahoney
                               Title: Vice President

                               NATEXIS BANQUES POPULAIRES

                               By:    /s/ Daniel Payer
                                  ----------------------------------------------
                               Name:  Daniel Payer
                               Title: Vice President

                               By:    /s/ Donovan Broussard
                                  ----------------------------------------------
                               Name:  Donovan Broussard
                               Title: Vice President & Manager

                               WASHINGTON MUTUAL BANK, FA

                               By:    /s/ Mark Isensee
                                  ----------------------------------------------
                               Name:  Mark Isensee
                               Title: Vice President

                                      S - 3



                          ACKNOWLEDGMENT BY GUARANTORS

      Each of the undersigned Guarantors hereby (i) consents to the terms and
conditions of that certain Second Amendment to Credit Agreement dated as of July
16, 2004 (the "Second Amendment"), (ii) acknowledges and agrees that its consent
is not required for the effectiveness of the Second Amendment, (iii) ratifies
and acknowledges its respective Obligations under each Loan Document to which it
is a party, and (iv) represents and warrants that (a) no Default or Event of
Default has occurred and is continuing, (b) it is in full compliance with all
covenants and agreements pertaining to it in the Loan Documents, and (c) it has
reviewed a copy of the Second Amendment.

                                  COMSTOCK OIL & GAS HOLDINGS, INC.
                                  COMSTOCK OIL & GAS - LOUISIANA, LLC
                                  COMSTOCK OFFSHORE, LLC
                                  COMSTOCK OIL & GAS GP, LLC,
                                  By Comstock Resources, Inc., its sole member
                                  COMSTOCK OIL & GAS, LP,
                                    By Comstock Oil & Gas GP, LLC,
                                    its general partner,
                                    By Comstock Resources, Inc., its sole member

                                  By:   /s/ Roland O. Burns
                                     -------------------------------------------
                                  Name:  Roland O. Burns
                                  Title:    Chief Financial Officer

                                  COMSTOCK OIL & GAS INVESTMENTS, LLC

                                  By:   /s/ Roland O. Burns
                                     -------------------------------------------
                                  Name:  Roland O. Burns
                                  Title:    Manager

                                      S - 4