CAIRN ENERGY USA INC
SC 13D/A, 1995-09-21
CRUDE PETROLEUM & NATURAL GAS
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                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
                                 SCHEDULE 13D-A

                   Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*

                             Cairn Energy USA, Inc.
                                (Name of Issuer)
                                  Common Stock
                         (Title of Class of Securities)

                                   127762102         
                                 (CUSIP Number)

  Verne O. Sedlacek                     Copy to: Christopher A. Klem, Esq.  
  Harvard Management Company, Inc.               Ropes & Gray
  600 Atlantic Avenue                            One International Place
  Boston, MA  02210                              Boston, MA  02110 
  (617) 523-4400                                 (617) 951-7410

          (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                September 19, 1995                 
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box.

Check the following box if a fee is being paid with the statement.   (A fee is
not required only if the reporting person:  (1) has a previous statement on
file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.) 
(See Rule 13d-7.)

Note:  Six copies of this statement, including all exhibits, should be filed
with the Commission.  See Rule 13d-1(a) for other parties to whom copies are to
be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

                                    PAGE 1









































                                 SCHEDULE 13D

         CUSIP No. 127762102                             Page 2 


  1.     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
         Phemus Corporation

  2.                                                          (a)
         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                              (b)  X

  3.     SEC USE ONLY

  4.     SOURCE OF FUNDS*
         WC

  5.     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
         REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)

  6.     CITIZENSHIP OR PLACE OF ORGANIZATION               
         Massachusetts

                 7.    SOLE VOTING POWER
    NUMBER OF          2,750,000
     SHARES
  BENEFICIALLY   8.    SHARED VOTING POWER
     OWNED BY          ----
      EACH       9.    SOLE DISPOSITIVE POWER     
   REPORTING           2,750,000
     PERSON      10.   SHARED DISPOSITIVE POWER
                       ----

 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
             2,750,000
                      
 12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
      CERTAIN SHARES*

 13.  PERCENT OF CLASS REPRESETED BY AMOUNT IN ROW (11)                      
                      
                16.2%


 14.  TYPE OF REPORTING PERSON*
              CO

                       *SEE INSTRUCTIONS BEFORE FILLING OUT!

                             PAGE TWO














<PAGE>


                                 SCHEDULE 13D-A

                             Cairn Energy USA, Inc.


Item 1.     Security and Issuer.

            This statement relates to the Common Stock, $.01 par value (the
"Common Stock"), of Cairn Energy USA, Inc., a Delaware corporation (the
"Issuer"), which has its principal executive offices at 8235 Douglas Ave.,
Suite 1221, Dallas, TX 75225.

Item 2.  Identity and Background.

            This statement is filed by Phemus Corporation ("Phemus"), a
Massachusetts corporation that is solely controlled by The President and
Fellows of Harvard College, a Massachusetts educational corporation ("Harvard")
and title-holding company for the endowment fund of Harvard University.  The
principal executive offices of Phemus are located at 600 Atlantic Avenue, 26th
Floor, Boston, Massachusetts 02210.

            Phemus is a charitable company holding a portion of the endowment
fund of Harvard University. 

            Phemus's activities are carried on from its offices located at 600
Atlantic Avenue, Boston, Massachusetts.

            Information relating to the directors and executive officers of
Phemus is contained in Exhibit A which was previously filed with this Schedule
13D and which is incorporated herein by reference.  All of the executive
officers and directors of Phemus are citizens of the United States of America.

            None of Phemus or, to the best of Phemus's knowledge or belief, any
of the persons listed in Exhibit A has, during the past five years, been
convicted in a criminal proceeding (excluding traffic violations and similar
misdemeanors).  Neither Phemus nor, to the best of Phemus's knowledge and
belief, any of the persons listed in Exhibit A has, during the past five years,
been a party to a civil proceeding of a judicial or administrative body of
competent jurisdiction and as a result of such proceeding was or is subject to
a judgment, decree or final order enjoining future violations of, or
prohibiting or mandating activities subject to, federal or state securities
laws or finding any violation with respect to such laws.

Item 3.  Source and Amount of Funds or Other Consideration.

            The source of funds or other consideration used to purchase the
securities of the Issuer to which this Statement relates held by Phemus have
been general funds (and income received therefrom) of Phemus and the Assets (as
defined in Item 5) of Smith Offshore Exploration Company II, a Delaware
corporation ("Smith") and wholly-owned subsidiary of Phemus.  The amount
expended to date, including the Smith Assets valued at $33,750,000, to acquire
beneficial ownership of Common Stock held by Phemus is approximately
$52,650,000.

                                 PAGE THREE

Item 4.     Purpose of Transaction.

            Item 4 is hereby amended in its entirety to read as follows:

            Phemus has purchased the shares of Common Stock it beneficially
owns as of the date of this Statement for investment purposes.  Phemus intends
to review its investment in the Issuer on a continuing basis and, depending on
various factors, including the Issuer's business, affairs and financial
position, other developments concerning the Issuer, the price level of the
Common Stock, conditions in the securities markets and general economic and
industry conditions, as well as other investment opportunities available to
Phemus, may in the future take such actions with respect to its investment in
the Issuer as it deems appropriate in light of the circumstances existing from
time to time.  Such actions may include the purchase of additional Common Stock
in the open market, in privately negotiated transactions or otherwise, or the
sale at any time of all or a portion of the Common Stock now owned or hereafter
acquired by Phemus to one or more purchasers.

            Phemus is party to a Voting Agreement dated October 10, 1994 (the
"Voting Agreement") with Cairn Energy PLC, a Scottish corporation ("Cairn PLC")
relating to the election of directors of the Issuer.  The Voting Agreement
provides that Phemus and Cairn PLC will vote all of their securities of the
Issuer carrying the right to vote (the "Voting Securities") and use their best
efforts (a) to fix the number of directors of the Issuer at seven and (b) to
elect to the Board of Directors of the Issuer (i) two members designated by
Phemus, (ii) two outside directors designated by mutual agreement between Cairn
PLC and Phemus, (iii) one director designated by Cairn PLC (so long as Cairn
PLC holds more than 5% of the Voting Securities), and (iv) two representatives
of the management of the Issuer; provided, however, that whenever Cairn PLC
owns a greater number of shares of Common Stock than does Phemus, Cairn PLC
will be entitled to designate two directors, and Phemus will be entitled to
designate one director.  Phemus and Cairn PLC will each also be entitled to
nominate a replacement director to fill any vacancy in the Board of Directors
of the Issuer created by the resignation, removal, incapacity or death of any
director who had been designated by Phemus or Cairn PLC, respectively.  Michael
McMahon and John Halsted, Phemus's designees to the Company's Board of
Directors were elected to the Board of Directors on October 10, 1994.  A copy
of the Voting Agreement was previously filed as Exhibit B to this Schedule 13D
and is incorporated herein by reference.  The foregoing description of the
Voting Agreement is qualified in its entirety by reference to the Voting
Agreement previously filed as Exhibit B to this Schedule 13D.

            On the basis of preliminary engineering valuations of the Assets
(as defined in Item 5 hereof), Phemus and the Issuer agreed that Phemus would
pay $3.9 million to the Issuer and return to the Issuer 1,000,000 shares of
Common Stock which are referred to in Item 5 hereof as the Escrow Shares. 
Consequently, Phemus is not entitled to receive any warrants to acquire
additional shares of Common Stock.

            Except as described above, Phemus does not have any plans or
proposals which relate to or would result in any of the actions set forth in
Parts (b) through (j) of Item 4.  Phemus disclaims any intention to influence
control of management of the Issuer.

                                  PAGE FOUR

Item 5.     Interest in Securities of the Issuer.

            Item 5 is hereby amended in its entirety to read as follows:

            (a), (b).  Phemus is the beneficial owner of 2,750,000 shares of
Common Stock (approximately 16.2% of the shares of Common Stock based upon the
most recent filing of the Issuer with the Securities and Exchange Commission). 
The shares of Common Stock reported herein as beneficially owned by Phemus
include shares of Common Stock owned by Smith (the "Smith Shares") which were
distributed to Phemus pursuant to Smith's Plan of Liquidation on October 10,
1994, a copy of which was previously filed as Exhibit G to this Schedule 13D.

            Phemus is the beneficial owner of all of the shares of Common Stock
to which this Statement relates held in its name, and has sole power to vote
and dispose of all such shares, other than as provided in the Voting Agreement
as described in Item 4.

            As a result of entering into the Voting Agreement, Phemus and Cairn
PLC may be deemed to comprise a "group" within the meaning of Section 13(d)(3)
of the Securities Exchange Act of 1934, as amended.  On June 19, 1995, Cairn
PLC completed a public sale of 2,623,000 shares of Common Stock of the Issuer. 
As a result of such sale, Cairn PLC is no longer a stockholder of the Issuer.

            (c).  On October 10, 1994 Phemus acquired 2,000,000 shares of
Common Stock from Cairn PLC for an aggregate consideration of $15,000,000 in
cash pursuant to the terms of a Common Stock Purchase Agreement dated as of
July 12, 1994 (the "Common Stock Purchase Agreement") between Phemus and Cairn
PLC.

            On October 10, 1994 Phemus also acquired, through Smith, 4,500,000
shares of Common Stock in exchange for assets of Smith (the "Assets") valued at
$33,750,000 pursuant to a Purchase and Sale Agreement dated July 12, 1994 among
the Issuer, Smith and Phemus (the "Purchase Agreement") a copy of which was
previously filed as Exhibit E to this Schedule 13D.  The number of shares of
Common Stock acquired by Smith was subject to adjustment pursuant to the
revaluation provisions set forth in the Purchase Agreement.  Of the 4,500,000
shares, 3,500,000 shares were issued to Smith at closing and 1,000,000 shares
(the "Escrow Shares") were placed in escrow pending the determination of the
valuation (the "Valuation") of the Assets as provided in the Purchase
Agreement. The foregoing description of the Purchase Agreement is qualified in
its entirety by reference to the Purchase Agreement which was previously filed
as Exhibit E to the Schedule 13D.

            On the basis of  preliminary engineering valuations of the Assets,
Phemus and the Issuer agreed, as of August 1, 1995, that Phemus would pay $3.9
million in cash to the Issuer and return to the Issuer the 1,000,000 Escrow
Shares.  Consequently, Phemus is not entitled to receive any warrants to
acquire additional shares of Common Stock.

            On September 19, 1995, Phemus completed a public sale of 2,750,000
shares of Common Stock of the Issuer at a price per share of $11.25.  The sale
was made pursuant to Phemus's first exercise of its Form S-3 registration right
under the Registration Rights Agreement dated October 10, 1994 (the
"Registration Rights Agreement") between Phemus and the Issuer.  The terms of
the Registration Rights Agreement are more fully described in Item 6.

                                PAGE FIVE

            Except for the transactions described in this Item 5(c), Phemus has
not engaged in any transactions in the Common Stock of the Issuer during the
60-day period ended September 19, 1995.  To the best of Phemus's knowledge and
belief, none of the directors or executive officers of Phemus has engaged in
any transactions in the Common Stock during the 60-day period ended September
19, 1995.

            (d).  Harvard Management Company, Inc. ("HMC") has full discretion
to direct the receipt of dividends from and vote the shares of the Issuer held
by Phemus.  HMC is a charitable membership corporation operated for the benefit
of Harvard. 
  
            (e).  Not applicable.

Item 6.     Contracts, Arrangements, Understandings or Relationships 
                with Respect to the Securities of the Issuer                   
   

            Item 6 is hereby amended in its entirety to read as follows:

            (i) HMC has full discretion to direct the receipt of dividends
from and vote the shares of the Issuer held by Phemus.

            (ii)For a description of the Voting Agreement, see Item 4.

            (iii)   For a description of the Purchase Agreement, see Item 5.

            (iv)On October 11, 1994, Smith distributed all of the shares of
Common Stock held by Smith to Phemus pursuant to the terms of its Plan of
Liquidation which was previously filed as Exhibit G to this Schedule 13D.

            (v) Phemus (as successor to Smith) and the Issuer were party to an
Escrow Release Agreement dated October 10, 1994 (a copy of which is was
previously filed as Exhibit F to this Schedule 13D) relating to the Escrow
Shares as hereinbefore defined. 

            (vi)Phemus was party to a Lock-Up Agreement with Petrie Parkman &
Co. dated October 12, 1994 (the "Lock-Up Agreement") whereby Phemus had agreed
not to dispose of any Common Stock for a period of 120 days from the date of
the Prospectus relating to the Lock-Up Agreement other than to any wholly-
owned affiliate of Harvard.  The foregoing description of the Lock-Up Agreement
is qualified in its entirety by reference to the Lock-Up Agreement which was
previously filed as Exhibit H to this Schedule 13D.

            (vii)   Phemus entered into a Registration Rights Agreement dated
October 10, 1994 with the Issuer (the "Registration Rights Agreement") which
was previously filed as Exhibit D to this Schedule 13D.  Pursuant to the
Registration Rights Agreement the Issuer agreed to provide Phemus certain
demand and piggy-back registration rights for the 6,500,000 shares of Common
Stock acquired pursuant to the Purchase Agreement and the Common Stock Purchase
Agreement, and any Warrant Shares (collectively, the "Phemus Registrable
Securities").

                               PAGE SIX

            Phemus has the right to two demand registrations on any
registration form that Phemus chooses and which the Issuer is eligible to use;
provided, however, that the request is not within six months after the
effective date of a registration statement for an underwritten public offering
of securities of the Issuer and further provided that the request covers at
least the lesser of (i) twenty percent (20%) of the Phemus Registrable
Securities outstanding as of the Closing (which would exclude the Escrow Shares
and the Warrant Shares); (ii) the number of Phemus Registrable Securities whose
aggregate offering price is expected to be at least $20,000,000; or (iii)
1,000,000 shares of Common Stock.

            The Issuer is not obligated to effect any Securities Act
registration (i) during the 180 days following the effective date of an
underwritten public offering of securities for the account of the Issuer, (ii)
if the Issuer is conducting or will be conducting within 90 days an
underwritten public offering of equity securities (or securities convertible
into equity securities) for its own account and has been advised in writing by
its managing underwriter that such offering would in its opinion be materially
adversely affected by the Phemus requested registration (in which event the
Issuer shall have the right to defer such filing for a period of not more than
120 days after receipt of the registration request), or (iii) if in the good
faith judgment of the Board of Directors of the Issuer, it would not be in the
best interests of the Issuer and its stockholders generally for such
registration statement to be filed at that time (in which event the Issuer
shall have the right to defer such filing for a period of not more than 120
days after receipt of the registration request).  The Issuer may not defer the
registration based on the reasons set forth in clauses (ii) or (iii) of the
preceding sentence more than once in any twelve-month period.

            Phemus also has the right to request the registration of the Phemus
Registrable Securities on Form S-3 at any time; provided, however, that the
Issuer is not be obligated to effect any such registrations if (i) Form S-3 is
not available to the Issuer; (ii) the aggregate net offering proceeds (after
deduction of underwriting discounts and commissions) of the securities
specified in such request is not at least $2,000,000; (iii) the Issuer has
already effected two registrations on Form S-3 within the previous 12-month
period; or (iv) if in the good faith judgment of the Board of Directors of the
Issuer it would not be in the best interest of the Issuer and stockholders for
such Form S-3 registration to be effected at such time, in which event the
Issuer shall have the right to defer the filing of the Form S-3 registration
for a period of not more than 120 days after receipt of the Phemus registration
request; provided further that the Issuer shall not utilize this right more
than once in the 12-month period.

            In addition, Phemus has certain piggy-back registration rights to
include its shares of Common Stock in an Issuer registration of its capital
stock or other securities under the Securities Act (including for this purpose
a registration effected by the Issuer for stockholders other than Phemus)
solely for cash (other than pursuant to a registration on Form S-8 or on Form
S-4).  In connection with an underwritten offering by the Issuer, the Issuer is
not required to include any shares of Common Stock owned by Phemus in such
underwriting selected by the Issuer. Furthermore, if the managing underwriter
for the offering shall advise the Issuer in writing that the total number of
securities, including Phemus Registrable Securities, requested by stockholders
to be included in such offering, exceeds the amount of securities to be sold
other than by the Issuer that can be successfully offered, then the Issuer
shall be required to include in the offering only that number of such
securities, including Phemus Registrable Securities, that the managing
underwriter believes will not jeopardize the success of the offering.  The
number of shares held by Phemus and other stockholders that may be included in
the underwriting shall be reduced pro rata among Phemus and the other
stockholders in accordance with the number of shares entitled to such
registration rights held by Phemus and such other stockholders.

                          PAGE SEVEN

            All expenses other than the underwriting discounts and commissions
relating to the sale of securities by Phemus shall be paid for by the Issuer;
provided, however, that the Issuer will not be required to pay for any expenses
of the Form S-3 registrations of Phemus Registrable Securities after the first
four such registrations.  If reasonably requested by the Issuer and the
managing underwriter, Phemus will agree to enter into lockup agreements
pursuant to which Phemus will not, for a period of ninety days following the
effective date of a registration statement, offer, sell or otherwise dispose of
Phemus Registrable Securities.

            Phemus may transfer its rights under the Registration Rights
Agreement to (i) an affiliate of Phemus or (ii) in connection with the sale or
other transfer to a holder holding, immediately after such transfer, at least
25% of the Phemus Registrable Securities outstanding as of the Closing Date. 
Notwithstanding the foregoing, holders of less than 25% of the Registrable
Securities outstanding as of the Closing Date shall be permitted to exercise
the rights under the Phemus Registration Rights Agreement if they appoint
Phemus as their representative to accept notices on their behalf.

            The Registration Rights Agreement prohibits the Issuer from and
after the Closing Date from granting registration rights to other persons that
would permit such persons to include their shares of Common Stock or other
Issuer securities in any Phemus demand registration unless the inclusion of
such securities of such other parties will not reduce the amount of Phemus
Registrable Securities that would otherwise be included.  In addition, without
the consent of Phemus, the Issuer is prohibited from granting piggy-back
registration rights to other persons unless such agreements provide that such
prospective holder may include such securities in such registration only to the
extent that inclusion of its securities will not reduce the amount of Phemus
Registrable Securities that would otherwise be included in the registration
below an amount equal to the number of Phemus Registrable Securities then
outstanding multiplied by the quotient of (x) the number of Phemus Registrable
Securities then outstanding divided by (y) the number of shares of Common stock
held by all those holders (including Phemus) of the Common Stock seeking to
include securities in the piggyback registration.

            (viii)  Phemus entered into an Underwriting Agreement dated
September 13, 1995 (the "Underwriting Agreement") with the Issuer and S.G.
Warburg & Co. Inc., Howard Weil, Labouisse, Fredrichs Incorporated and Petrie
Parkman & Co., Inc. (collectively, the "Underwriters").  The Underwriters have
agreed to purchase from the Issuer and Phemus and the Issuer and Phemus have
agreed to sell to the Underwriters an aggregate of 3,750,000 shares of Common
Stock of the Issuer.  Subject to certain conditions, the Underwriters are
obligated to take and pay for all such shares if any shares are taken.  The
foregoing description of the Underwriting Agreement is qualified in its
entirety by reference to the Underwriting Agreement attached hereto as Exhibit
I.

            (ix)Phemus is a party to a Lock-Up Agreement with the Underwriters
dated September 19, 1995 (the "1995 Lock-Up Agreement") whereby Phemus has
agreed that, without the prior written consent of the Underwriters, it will not
sell or otherwise dispose of any shares of Common Stock of the Issuer for a
period of 180 days after the date of the Prospectus relating to the 1995 Lock-
Up Agreement, other than transfers to wholly-owned affiliates.  The foregoing
description of the 1995 Lock-Up Agreement is qualified in its entirety by
reference to the 1995 Lock-Up Agreement attached hereto as Exhibit J.

                            PAGE EIGHT









Item 7.     Material to be Filed as Exhibits.

            Item 7 is hereby amended in its entirety to read as follows:

Exhibit A*  --          Information concerning Reporting Person's officers,
                        directors and others. 

Exhibit B*  --          Voting Agreement dated as of October 10, 1994 between
                        Phemus and Cairn PLC.

Exhibit C*  --          Common Stock Purchase Agreement dated as of July 12,
                        1994 among Cairn PLC and Phemus.

Exhibit D*  --          Registration Rights Agreement dated October 10, 1994
                        between the Issuer and Phemus.

Exhibit E*  --          Purchase Agreement dated as of July 12, 1994 among
                        Smith, Phemus and the Issuer.

Exhibit F*  --          Escrow Release Agreement dated October 10, 1994
                        among the Issuer and Smith.

Exhibit G*  --          Smith Offshore Exploration Company II Plan of
                        Liquidation.

Exhibit H*  --          Lock-Up Agreement dated October 12, 1994 between
                        Phemus and Petrie Parkman & Co.

Exhibit I --            Underwriting Agreement dated September 13, 1995
                        between the Issuer, Phemus and the Underwriters.

Exhibit J --            Lock-Up Agreement dated September 19, 1995 between
                        Phemus, the Issuer and the Underwriters.


               *Previously filed as an Exhibit to this Schedule 13D.

                                    PAGE 9
<PAGE>





                                 Signature


            After reasonable inquiry and to the best of its knowledge and
belief, the undersigned certifies that the information set forth in this
statement is true, complete and correct.

Dated:      September 20, 1995


PHEMUS CORPORATION


By: /s/ Michael R. Eisenson      
     Name:  Michael R. Eisenson
     Title: President


                                    PAGE 10
<PAGE>

                                 EXHIBIT INDEX



Exhibit
Number                   Description


   I                     Underwriting Agreement

   J                     1995 Lock-Up Agreement


























































                                                              EXHIBIT I



                               3,750,000 Shares

                            CAIRN ENERGY USA, INC.

                                Common Stock

                           UNDERWRITING AGREEMENT


                                                       September 13, 1995

          S.G.WARBURG & CO. INC.
          HOWARD, WEIL, LABOUISSE, FRIEDRICHS INCORPORATED
          PETRIE PARKMAN & CO., INC.
          c/o S.G.WARBURG & CO. INC.
                277 Park Avenue
                New York, New York  10172



          Dear Sirs:

               Cairn Energy USA, Inc., a Delaware corporation (the
          "Company"), and Phemus Corporation, a Massachusetts
          membership corporation (the "Selling Stockholder"), 
          propose to sell an aggregate of 3,750,000 shares of common
          stock, par value $.01 per share, of the Company (the
          "Common Stock"), of which 1,000,000 shares of Common Stock
          are to be issued and sold by the Company and 2,750,000
          shares of Common Stock are to be sold by the Selling
          Stockholder, in each case to you and the several
          underwriters named in Schedule I hereto (the
          "Underwriters").  The 3,750,000 shares of Common Stock
          being sold to the several Underwriters by the Company and
          the Selling Stockholder are herein called the "Firm
          Shares."  The Company also proposes to sell to the several
          Underwriters not more than 562,500 additional shares of
          Common Stock (the "Additional Shares") if requested by the
          Underwriters as provided in Section 2 hereof.  The Firm
          Shares and the Additional Shares are herein collectively
          called the "Shares." 

               1.   Registration Statement and Prospectus.  The
          Company has prepared and filed with the Securities and
          Exchange Commission (the "Commission") in accordance with
          the provisions of the Securities Act of 1933, as amended
          (the "Securities Act"), and the rules and regulations of
          the Commission thereunder (collectively, the "Rules and
          Regulations"), a registration statement on Form S-3
          including a prospectus relating to the Shares, which may
          be amended.  The registration statement as amended at the
          time when it becomes effective, including information (if
          any) deemed to be part of the registration statement at
          the time of effectiveness pursuant to Rule 430A under the
          Securities Act, is hereinafter referred to as the
          "Registration Statement;" and the prospectus in the form
          first used to confirm sales of Shares is hereinafter
          referred as the "Prospectus."  For purposes hereof, the
          term "Prospectus" shall include the consolidated financial
          statements of the Company and the notes thereto included
          therein.  Any reference in this Agreement to the
          Registration Statement or any Prospectus shall be deemed
          to refer to and include the documents incorporated by
          reference therein pursuant to Item 12 of Form S-3 under
          the Securities Act, as of the date of the Registration
          Statement or any Prospectus, as the case may be, and any
          reference to any amendment or supplement to the
          Registration Statement or any Prospectus shall be deemed
          to refer to and include any documents filed after such
          date under the Securities Exchange Act of 1934, as amended
          (the "Exchange Act"), which, upon filing, are incorporated
          by reference therein, as required by paragraph (b) of
          Item 12 of Form S-3.  As used herein, the term
          "Incorporated Documents" means the documents which at the
          time are incorporated by reference in the Registration
          Statement, any Prospectus or any amendment or supplement
          thereto, but does not include any documents incorporated
          by reference in the Registration Statement, any Prospectus
          or any amendment or supplement thereto subsequent to the
          Closing Date (as defined in Section 4 hereof).

               2.   Agreements to Sell and Purchase.  The Selling
          Stockholder and the Company, severally and not jointly,
          hereby agree, subject to all the terms and conditions set
          forth herein, to sell 2,750,000 shares of Common Stock and
          1,000,000 shares of Common Stock, respectively, to the
          Underwriters and, upon the basis of the representations,
          warranties and agreements of the Company and the Selling
          Stockholder herein contained and subject to all of the
          terms and conditions set forth herein, each of the
          Underwriters, severally and not jointly, agrees to
          purchase from the Selling Stockholder and the Company the
          respective number of Firm Shares set forth opposite that
          Underwriter's name in Schedule I hereto, at a purchase
          price of $10.6875 per share (the "Purchase Price").

               On the basis of the representations and warranties
          contained in this Agreement, and subject to its terms and
          conditions, the Company also agrees to issue and sell to
          the several Underwriters up to 562,500 Additional Shares,
          and the Underwriters shall have a one-time right to
          purchase up to an aggregate of 562,500 Additional Shares
          from the Company at the Purchase Price.  Additional Shares
          may be purchased as provided in Section 4 hereof solely
          for the purpose of covering over-allotments made in
          connection with the offering of the Firm Shares.  If any
          Additional Shares are to be purchased, each Underwriter,
          severally and not jointly, agrees to purchase from the
          Company the number of Additional Shares (subject to such
          adjustments to eliminate fractional shares as you may
          determine) which bears the same proportion to the total
          number of Additional Shares to be purchased from the
          Company as the number of Firm Shares set forth opposite
          the name of such Underwriter in Schedule I bears to the
          total number of Firm Shares.

               The Company and the Selling Stockholder hereby agree
          to, and the Company and the Selling Stockholder shall,
          concurrently with the execution of this Agreement, deliver
          agreements executed by (i) each of the directors and
          officers of the Company, (ii) the Company and (iii) the
          Selling Stockholder pursuant to which each such person
          agrees, except as provided in the Prospectus, not to
          offer, sell, contract to sell, grant any option to
          purchase, or otherwise dispose of any common stock of the
          Company or any securities convertible into or exercisable
          or exchangeable for such common stock (or, in the case of
          the Company, file any registration statement under the
          Securities Act with respect to any of the foregoing),
          except to the several Underwriters pursuant to this
          Agreement, for a period of 180 days after the date of the
          Prospectus without the prior written consent of
          S.G.Warburg & Co. Inc.  Notwithstanding the foregoing,
          during such period the Company may issue shares of Common
          Stock or grant options to purchase shares of Common Stock
          pursuant to employee benefit plans and issue shares of
          Common Stock upon the exercise of an option or warrant or
          the conversion of a security outstanding on the date
          hereof.

               3.   Terms of Public Offering.  The Company and the
          Selling Stockholder are advised by you that the
          Underwriters propose to make a public offering of the
          Shares as soon after the Registration Statement and this
          Agreement have become effective as in your judgment is
          advisable.  The Company and the Selling Stockholder are
          further advised by you that the Shares are to be offered
          to the public initially at U.S. $11.25 per share (the
          public offering price) and to certain dealers selected by
          you at a price that represents a concession not in excess
          of U.S. $0.3375 per share under the public offering price,
          and that the Underwriters may allow, and such dealers may
          reallow, a concession, not in excess of U.S. $0.10 per
          share, to certain other dealers.

               4.   Delivery and Payment.  Delivery to the
          Underwriters of and payment for the Firm Shares shall be
          made by certified or official bank check or checks payable
          to the order of the Company (in the case of Shares sold by
          the Company) and the Selling Stockholder (in the case of
          Shares sold by the Selling Stockholder), in New York
          Clearing House or similar next day funds, at the offices
          of S.G.Warburg & Co. Inc., 277 Park Avenue, New York, New
          York, at 9:00 a.m. (New York City time), on September 18,
          1995, or at such other time on the same or such other
          date, not later than September 19, 1995, or such other
          place as shall be designated in writing by you.  The time
          and date of such payment are hereinafter referred to as
          the Closing Date.

               Delivery to the Underwriters and payment for any
          Additional Shares shall be made by certified or official
          bank check or checks or wire transfer payable to the order
          of the Company, in each case in New York Clearing House or
          similar next day funds, at the offices of S.G.Warburg &
          Co. Inc., 277 Park Avenue, New York, New York, at
          9:00 a.m. (New York City time), on such date (which may be
          the same as the Closing Date but shall in no event be
          earlier than the Closing Date nor later than 10 business
          days after the giving of the notice hereinafter referred
          to) as shall be designated in a written notice from
          S.G.Warburg  & Co. Inc. to the Company of its
          determination to purchase a number, specified in said
          notice, of Additional Shares, or on such other date, in
          any event not later than October 18, 1995, or at such
          other place as shall be designated in writing by you.  The
          time and date of such payment are hereinafter referred to
          as the Option Closing Date.  The notice of the
          determination to exercise the option to purchase
          Additional Shares and of the Option Closing Date may be
          given at any time within 30 days after the date of this
          Agreement.

               Certificates for the Firm Shares and Additional
          Shares shall be in definitive form and registered in such
          names and issued in such denominations as you shall
          request in writing not later than two full business days
          prior to the Closing Date or the Option Closing Date, as
          the case may be.  Such certificates shall be made
          available to you for inspection not later than 9:30 A.M.
          (New York City time) on the business day next preceding
          the Closing Date or the Option Closing Date, as the case
          may be.  Certificates in definite form evidencing the
          Shares shall be delivered to you on the Closing Date or
          the Option Closing Date, as the case may be, with any
          transfer or similar taxes thereon duly paid by the Company
          or the Selling Stockholder, as appropriate, for the
          respective accounts of the several Underwriters.

               5.   Covenants of the Company.  In further
          consideration of the agreements of the Underwriters herein
          contained, the Company covenants to each Underwriter as
          follows: 

                    (a)  If, at the time this Agreement is executed
               and delivered, it is necessary for the Registration
               Statement or a post-effective amendment thereto to be
               declared effective before the offering of the Shares
               may commence, to use its best efforts to cause the
               Registration Statement or such post-effective
               amendment to become effective at the earliest
               possible time.  The Company will comply in a timely
               manner with the applicable provisions of Rules 424
               and 430A under the Securities Act prior to the
               Closing Date.

                    (b)  To advise you promptly and, if requested by
               you, to confirm such advice in writing, (i) when the
               Registration Statement has become effective and when
               any post-effective amendment to it becomes effective,
               (ii) of any request by the Commission for amendments
               to the Registration Statement or amendments or
               supplements to the Prospectus or for additional
               information with respect thereto, (iii) of the
               issuance by the Commission of any stop order
               suspending the effectiveness of the Registration
               Statement or of the suspension of qualification of
               the Shares for offering or sale in any jurisdiction,
               or the initiation of any proceeding for such
               purposes, and (iv) of the happening of any event
               during the period referred to in paragraph (e) below
               which makes any statement of a material fact made in
               the Registration Statement or the Prospectus untrue
               or which requires the making of any additions to or
               changes in the Registration Statement or the
               Prospectus in order to make the statement therein, in
               light of the circumstances under which made, not
               misleading.  If at any time the Commission shall
               issue any stop order suspending the effectiveness of
               the Registration Statement, the Company will make
               every reasonable effort to obtain the withdrawal or
               lifting of such order at the earliest possible time.

                    (c)  To furnish to you, without charge, two
               signed copies of the Registration Statement as first
               filed with the Commission and of each subsequent
               amendment to the Registration Statement, including
               all exhibits, and to furnish to you and each
               Underwriter designated by you, (i) such number of
               conformed copies of the Registration Statement as so
               filed and of each such amendment to it, without
               exhibits, as you may reasonably request, and
               (ii) such number of the Incorporated Documents, and
               the exhibits thereto, as you may reasonably request.

                    (d)  Not to file (i) any amendment or supplement
               to the Registration Statement (other than an
               amendment or supplement made through the filing of
               Incorporated Documents), whether before or after the
               time when it becomes effective, or to make any
               amendment or supplement to the Prospectus of which
               you shall not previously have been advised or to
               which you shall reasonably object, or (ii) so long
               as, in the reasonable opinion of counsel to the
               Underwriters, a prospectus is required to be
               delivered in connection with sales by any Underwriter
               or dealer, any document which, upon filing, becomes
               an Incorporated Document without delivering a copy of
               such documents to you prior to or concurrently with
               such filing.

                    (e)  Promptly after the Registration Statement
               becomes effective, and from time to time thereafter
               for such period as in the reasonable opinion of
               counsel for the Underwriters a prospectus is required
               by law to be delivered in connection with sales by an
               Underwriter or a dealer, to furnish to each
               Underwriter and dealer as many copies of the
               Prospectus (and of any amendment or supplement to the
               Prospectus) as such Underwriter or dealer may
               reasonably request.

                    (f)  If during the period specified in
               paragraph (e) any event shall occur as a result of
               which, in the reasonable opinion of counsel for the
               Underwriters, it becomes necessary to amend or
               supplement the Prospectus in order to make the
               statements therein, in the light of the circumstances
               when the Prospectus is delivered to a purchaser, not
               misleading, or if it is necessary to amend or
               supplement the Prospectus to comply with any law,
               forthwith to prepare and file with the Commission an
               appropriate amendment or supplement to the Prospectus
               so that the statements in the Prospectus, as so
               amended or supplemented, will not in the light of the
               circumstances when it is so delivered, be misleading,
               or so that the Prospectus will comply with law, and
               to furnish to each Underwriter and to such dealers as
               you shall specify, such number of copies thereof as
               such Underwriter or dealers may reasonably request.

                    (g)  Prior to any public offering of the Shares,
               to cooperate with you and counsel for the
               Underwriters in connection with the registration or
               qualification of the Shares for offer and sale by the
               several Underwriters and by dealers under the state
               securities or blue sky laws of such jurisdictions as
               you may request, to continue such qualification in
               effect so long as required for distribution of the
               Shares and to file such consents to service of
               process or other documents as may be necessary in
               order to effect such registration or qualification;
               provided, however, that the Company shall not be
               required to qualify as a foreign corporation or to
               take any action that would subject it to service of
               process in suits other than as to matters relating to
               the offer and sale of the Shares or subject itself to
               taxation in respect of doing business in any
               jurisdiction where it is not now so subject.

                    (h)  To make generally available to its
               stockholders as soon as reasonably practicable a
               consolidated earnings statement covering a period of
               at least twelve months beginning after the "effective
               date" (as defined in Rule 158 under the Act) of the
               Registration Statement (but in no event commencing
               later than 90 days after such effective date) which
               shall satisfy the provisions of Section 11(a) of the
               Act (including, at the option of the Company,
               Rule 158 promulgated thereunder).

                    (i)  During the period of five years hereafter,
               to furnish to you as soon as available a copy of each
               report or other publicly available information of the
               Company mailed to the holders of Common Shares and a
               copy of each report (including related financial
               statements) filed with the Commission, the NASDAQ
               National Market System and such other publicly
               available information concerning the Company and its
               subsidiaries as you may reasonably request.

                    (j)  To pay all costs, expenses, fees and taxes
               incident to (i) the preparation, printing, filing and
               distribution under the Securities Act of the
               Registration Statement (including financial
               statements and exhibits), each Prospectus and all
               amendments and supplements to any of them prior to or
               during the period specified in paragraph (e),
               (ii) the printing and delivery of the Prospectus and
               all amendments or supplements to it during the period
               specified in paragraph (e), (iii) the copying and
               delivery of this Agreement, the Preliminary and
               Supplemental Blue Sky Memoranda (including in each
               case any reasonable disbursements of counsel for the
               Underwriters relating to such copying and delivery),
               (iv) the registration or qualification of the Shares
               for offer and sale under the securities or blue sky
               laws of the several states (including in each case
               the reasonable fees and disbursement of counsel for
               the Underwriters relating to such registration or
               qualification and memoranda relating thereto),
               (v) filing and clearance with the National
               Association of Securities Dealers, Inc. (the "NASD")
               in connection with the offering, (vi) the listing of
               the Shares on the NASDAQ National Market System,
               (vii) furnishing such copies of the Registration
               Statement, the Prospectus and all amendments and
               supplements thereto as may be requested for use in
               connection with the offering or sale of the Shares by
               the Underwriters or by dealers to whom Shares may be
               sold as described herein and (viii) the performance
               by the Company of its other obligations under this
               Agreement.

                    (k)  In accordance with the Cuba Act and without
               limitation to the provisions of Section 9 hereof, the
               Company agrees to indemnify and hold harmless the
               Underwriters from and against any and all losses,
               claims, damages and liabilities (including, without
               limitation, any legal or other expenses reasonably
               incurred), arising out of any violation by the
               Company of the Cuba Act.

                    (l)  Except as stated in this Agreement and in
               the Prospectus, to not take, directly or indirectly,
               any action designed to or that might reasonably be
               expected to cause or result in stabilization or
               manipulation of the price of the Common Stock to
               facilitate the sale or resale of the Shares.

                    (m)  To use its best efforts to do and perform
               all things required or necessary to be done and
               performed under this Agreement by the Company prior
               to the Closing Date or the Option Closing Date, as
               the case may be, and to satisfy all conditions
               precedent to the delivery of the Shares.

                    (n)  To apply its net proceeds from the sale of
               the Shares in accordance with the description set
               forth in the Prospectus under "Use of Proceeds."

               6.   Covenants of the Selling Stockholder.  In
          further consideration of the agreements of the
          Underwriters herein contained, the Selling Stockholder
          covenants to each Underwriter as follows: 

                    (a)  To cooperate to the extent necessary to
               cause the Registration Statement or any
               post-effective amendment thereto to become effective
               at the earliest possible time.

                    (b)  To do or perform all things reasonably
               required to be done or performed by the Selling
               Stockholder before the Closing Date or the Option
               Closing Date, as the case may be, to satisfy all
               conditions precedent to the delivery of the Shares to
               be sold by the Selling Stockholder to the
               Underwriters pursuant to this Agreement.

                    (c)  Except as stated in this Agreement and in
               the Prospectus, to not take, directly or indirectly,
               any action designed to or that might reasonably be
               expected to cause or result in stabilization or
               manipulation of the price of the Common Stock to
               facilitate the sale or resale of the Shares.

                    (d)  To advise you promptly, and if requested by
               you, to confirm such advice in writing, within the
               period of time referred to in Section 5(e) hereof, of
               any change in information relating to the Selling
               Stockholder or any new information relating to the
               Selling Stockholder stated in the Prospectus or any
               amendment or supplement thereto which comes to the
               attention of the Selling Stockholder that suggests
               that any statement made in the Registration Statement
               or the Prospectus (as then amended or supplemented,
               if amended or supplemented) is or may be untrue in
               any material respect or that the Registration
               Statement or Prospectus (as then amended or
               supplemented, if amended or supplemented) omits or
               may omit to state a material fact or a fact necessary
               to be stated therein in order to make the statements
               therein not misleading in any material respect, or of
               the necessity to amend or supplement the Prospectus
               (as then amended or supplemented, if amended or
               supplemented) in order to comply with the Securities
               Act and the Rules and Regulations or any other law.

                    (e)  Prior to any public offering of the Shares,
               to cooperate with you and counsel for the
               Underwriters in connection with the registration or
               qualification of the Shares for offer and sale by the
               Underwriters and by dealers under the state
               securities or blue sky laws of such jurisdictions as
               you may request, to continue such qualification in
               effect so long as required for distribution of the
               Shares and to file such consents to service of
               process or other documents as may be necessary to
               effect such registration or qualification; provided,
               however, that the Selling Stockholder shall not be
               required to qualify as a foreign corporation or to
               take any action that would subject it to service of
               process in suits other than as to matters relating to
               the offer and sale of the Shares or subject itself to
               taxation in respect of doing business in any
               jurisdiction where it is not now subject.

               7.   Representations and Warranties of the Company. 
          The Company represents and warrants to, and covenants and
          agrees with, each Underwriter as follows:

                    (a)  The Registration Statement has become
               effective; no stop order suspending the effectiveness
               of the Registration Statement is in effect, and no
               proceedings for such purpose are pending before or,
               to the best knowledge of the Company, threatened by
               the Commission.

                    (b)  (i) The Company and the offering and sale
               of shares contemplated by this Agreement meet the
               requirements for using Form S-3 under the Act,
               (ii) each part of the Registration Statement, when
               such part became effective, did not contain and each
               such part, as amended or supplemented, if applicable,
               will not contain any untrue statement of a material
               fact or omit to state a material fact required to be
               stated therein or necessary to make the statements
               therein not misleading, (iii) the Registration
               Statement and the Prospectus comply in all material
               respects and, as amended or supplemented, if
               applicable, will comply in all material respects with
               the Securities Act and the Rules and Regulations and
               (iv) the Prospectus does not contain and, as amended
               or supplemented, if applicable, will not contain any
               untrue statement of a material fact or omit to state
               a material fact necessary in order to make the
               statements therein, in the light of the circumstances
               under which they were made, not misleading, except
               that the representations and warranties set forth in
               this Section 7(b) do not apply to statements or
               omissions in the Registration Statement or the
               Prospectus based upon information relating to (x) the
               Underwriters furnished to the Company in writing by
               the Underwriters expressly for use therein or (y) the
               Selling Stockholder furnished to the Company in
               writing by the Selling Stockholder expressly for use
               therein.

                    (c)  Each preliminary prospectus filed as part
               of the Registration Statement as originally filed or
               as part of any amendment thereto, or filed pursuant
               to Rule 424 of the Rules and Regulations, complied
               when so filed in all material respects with the
               Securities Act and the Rules and Regulations.

                    (d)  All of the Company's subsidiaries are
               listed, to the extent such listing is required under
               the Securities Act and the Rules and Regulations, in
               an exhibit to the Company's Annual Report on
               Form 10-K which is incorporated by reference into the
               Registration Statement.  Each of the Company and its
               subsidiaries has been duly incorporated, is validly
               existing as a corporation in good standing under the
               laws of its jurisdiction of incorporation and has the
               corporate power and authority to own, lease and
               operate its properties and conduct its business as
               described in the Prospectus and to enter into and
               perform its obligations under this Agreement, and
               each is duly qualified and is in good standing as a
               foreign corporation authorized to do business in each
               jurisdiction in which the nature of its business or
               its ownership or leasing of property requires such
               qualification, except where the failure to be so
               qualified would not have a material adverse effect on
               the Company and its subsidiaries, taken as a whole.

                    (e)  The Incorporated Documents heretofore
               filed, when they were filed (or, if any amendment
               with respect to any such document was filed, when
               such amendment was filed), conformed in all material
               respects with the requirements of the Exchange Act
               and the rules and regulations thereunder; any further
               Incorporated Documents so filed will, when they are
               filed, conform in all material respects with the
               requirements of the Exchange Act and the rules and
               regulations thereunder; no such document when it was
               filed (or, if any amendment with respect to any such
               document was filed, when such amendment was filed)
               contained an untrue statement of a material fact or
               omitted to state a material fact required to be
               stated therein or necessary in order to make the
               statements therein, in light of the circumstances
               when made, not misleading; and no such further
               document, when it is filed, will contain an untrue
               statement of a material fact or will omit to state a
               material fact required to be stated therein or
               necessary in order to make the statements therein, in
               light of the circumstances when made, not misleading.

                    (f)  All of the outstanding shares of capital
               stock of the Company's subsidiaries have been duly
               authorized and validly issued and are fully paid and
               non-assessable, and are owned by the Company, free
               and clear of any security interest, claim, lien,
               encumbrance or adverse interest of any nature, except
               for the security interest granted to International
               Nederlanden (U.S.) Capital Corporation ("INCC") and
               MeesPierson, N.V. ("MeesPierson") pursuant to the
               Credit Agreement dated September 8, 1993, as amended
               on October 15, 1993 and May 10, 1994 and amended and
               restated on December 20, 1994 (the "Credit
               Agreement") between the Company, INCC and
               MeesPierson, a copy of which (without exhibits) has
               been filed with the Commission as an exhibit to the
               Company's registration statement on Form S-3, filed
               with the Commission on June 21, 1994 which is
               incorporated by reference into the Registration
               Statement.

                    (g)  (i)  All the outstanding shares of capital
               stock of the Company have been duly authorized and
               validly issued and are fully paid, non-assessable and
               not subject to any preemptive or similar rights and
               have been issued in compliance with all federal and
               state securities laws and (ii) the Shares to be
               issued and sold by the Company hereunder have been
               duly authorized and, when issued and delivered to the
               Underwriters against payment therefor as provided by
               this Agreement, will have been validly issued and
               will be fully paid and non-assessable, and the
               issuance of such Shares will not be subject to any
               preemptive rights.

                    (h)  The authorized and outstanding capital
               stock of the Company conforms as to legal matters in
               all material respects to the description thereof
               contained in the Prospectus.  Except as described in
               the Prospectus, there are no outstanding rights
               (including, without limitation, preemptive rights),
               warrants or options to acquire, or instruments
               convertible into or exchangeable for, any capital
               stock of the Company or its subsidiaries or other
               equity interest in the Company or its subsidiaries,
               in each case, issued by the Company or its
               subsidiaries, or any contract, commitment, agreement,
               understanding or arrangement of any kind of which the
               Company or its subsidiaries is a party relating to
               the issuance of capital stock of the Company or its
               subsidiaries, any such convertible or exchangeable
               securities or any such rights, warrants or options.

                    (i)  Except as otherwise stated in the
               Prospectus, subsequent to the respective dates as of
               which information is given in the Prospectus: 
               (i) there has been no material adverse change, or any
               development that would reasonably be expected to
               result in a material adverse change, in the
               condition, financial or otherwise, or in the
               earnings, business or operations of the Company and
               its subsidiaries, taken as a whole, whether or not
               arising from transactions in the ordinary course of
               business, (ii) the Company and its subsidiaries,
               taken as a whole, have not incurred any material
               liability or obligation, direct or contingent, not in
               the ordinary course of business nor entered into any
               material transaction not in the ordinary course of
               business, and (iii) there has been no dividend or
               distribution of any kind declared, paid or made by
               the Company or, except for dividends paid to the
               Company, its subsidiaries on any class of capital
               stock or repurchase or redemption by the Company or
               its subsidiaries of any class of capital stock.

                    (j)  Neither the Company nor any of its
               subsidiaries is in violation of its respective
               charter or bylaws or in default in the performance or
               observance of any obligation, agreement, covenant or
               condition contained in any indenture, mortgage, loan
               agreement, covenant, note, contract, lease or other
               instrument to which the Company or its subsidiary is
               a party or by which it or any of them may be bound
               (including the Credit Agreement) or to which any of
               the property or assets of the Company or its
               subsidiaries is subject, except for such defaults as
               would not, singly or in the aggregate, have a
               material adverse effect on the Company and its
               subsidiaries, taken as a whole.

                    (k)  This Agreement has been duly authorized,
               executed and delivered by the Company and is a valid
               and binding agreement of the Company enforceable in
               accordance with its terms, except to the extent that
               rights to indemnification thereunder may be limited
               by federal or state securities laws and policies
               embodied therein, or to the extent that such
               obligations are subject to or affected or limited by
               (i) applicable liquidation, conservatorship,
               bankruptcy, insolvency, reorganization, fraudulent
               conveyance, moratorium or other laws affecting
               creditors' rights or in the collection of debtors'
               obligations generally from time to time in effect, or
               (ii) general principles of equity (whether
               enforceability is considered in a proceeding in
               equity or at law).  The execution, delivery and
               performance of this Agreement, compliance by the
               Company with all the provisions hereof and the
               consummation of the transactions contemplated hereby
               will not require any consent, approval, authorization
               or other order of any court, regulatory body,
               administrative agency or other governmental body
               (except as has been previously obtained and except as
               may be required under the securities or blue sky laws
               of the various states) and will not conflict with or
               constitute a breach of any of the terms or provisions
               of, or a default under, the charter or bylaws of the
               Company or its subsidiaries or any agreement,
               indenture or other instrument to which the Company or
               its subsidiaries is a party or by which the Company
               or its subsidiaries or their respective property is
               bound, or violate or conflict with any laws,
               administrative regulations or rulings or court
               decrees applicable to the Company, its subsidiaries
               or their respective property, except for any such
               conflict, breach, violation or default as will not
               have a material adverse effect on the Company and its
               subsidiaries taken as a whole.

                    (l)  There is no action, suit or proceeding
               before or by any court or governmental agency or
               body, domestic or foreign, now pending, or, to the
               best knowledge of the Company, threatened, against or
               affecting the Company or its subsidiaries, (i) which
               is required to be disclosed in the Registration
               Statement (other than as disclosed therein), or
               (ii) in which there is a reasonable possibility of a
               determination adverse to the Company or its
               subsidiaries and which, if determined adversely to
               the Company and its subsidiaries, would reasonably be
               expected to (A) result in any material adverse change
               in the condition, financial or otherwise, or in the
               earnings, business or operations of the Company and
               its subsidiaries, taken as a whole, or (B) materially
               and adversely affect the properties or assets thereof
               or (C) materially and adversely affect the
               consummation of this Agreement; all pending legal or
               governmental proceedings to which the Company or its
               subsidiaries is a party or of which any of their
               respective properties or assets is the subject which
               are not described in the Registration Statement,
               including ordinary routine litigation incidental to
               the business, are, considered in the aggregate, not
               material; and there are no contracts or documents of
               the Company or its subsidiaries which are required to
               be filed as exhibits to the Registration Statement or
               incorporated by reference therein by the Securities
               Act or the Rules and Regulations which have not been
               so filed or incorporated.

                    (m)  The Company and its subsidiaries have
               obtained all licenses, permits and other
               authorizations required under any Environmental Law
               (as defined below) necessary for their respective
               operations, except to the extent that failure to have
               such license, permit or authorization would not
               reasonably be expected to have a material adverse
               effect on the Company and its subsidiaries, taken as
               a whole; the business and operations of the Company
               and its subsidiaries comply with the terms and
               conditions of such licenses, permits and
               authorizations and comply with all Environmental
               Laws, except to the extent that failure to comply
               would not reasonably be expected to have a material
               adverse effect on the Company and its subsidiaries
               taken as a whole; the Company and its subsidiaries
               are in compliance with all Environmental Laws, except
               to the extent that any noncompliance would not
               reasonably be expected to have a material adverse
               effect on the Company and its subsidiaries, taken as
               a whole; neither the Company nor its subsidiaries has
               received any written communication, whether from a
               governmental authority, citizens group, employee or
               otherwise, that alleges that the Company or its
               subsidiaries is not in compliance with any
               Environmental Law, except to the extent that such
               noncompliance would not reasonably be expected to
               have a material adverse effect on the Company and its
               subsidiaries, taken as a whole; there is no
               Environmental Claim (as defined below) pending or, to
               the Company's knowledge, threatened against the
               Company or its subsidiaries or, to the Company's
               knowledge, against any person or entity whose
               liability for any Environmental Claim the Company or
               its subsidiary has retained or assumed either
               contractually or by operation of law, except to the
               extent that such Environmental Claim would not
               reasonably be expected to have a material adverse
               effect on the Company and its subsidiaries, taken as
               a whole; the Company is not aware of any condition or
               circumstance that is reasonably likely to give rise
               to an Environmental Claim that, if made, would have a
               material adverse effect on the Company and its
               subsidiaries, taken as a whole.  As used in this
               Agreement, "Environmental Laws" means any and all
               federal, state and local statutes, laws, regulations,
               ordinances, grants, franchises, licenses, agreements,
               or governmental restrictions relating to pollution,
               human health or the environment or the release of any
               materials into the environment, including, but not
               limited to, emissions, discharges, releases or
               threatened releases of pollutants, contaminants,
               wastes, toxic substances, hazardous substances,
               petroleum or petroleum products; and "Environmental
               Claim" means any claim, action, cause of action,
               investigation or notice by any person or entity
               alleging potential liability (including, without
               limitation, potential liability for investigatory
               costs, cleanup costs, governmental response costs,
               natural resources damages, property damages, personal
               injuries, or penalties) arising out of, based on or
               resulting from (a) the presence, or release into the
               environment, of any pollutants, contaminants, wastes,
               toxic substances, hazardous substances, petroleum and
               petroleum products at any location, whether or not
               owned or operated by the Company or any of its
               subsidiaries or (b) circumstances forming the basis
               of any violation, or alleged violation, of any
               Environmental Law.

                    (n)  Except as otherwise set forth in the
               Prospectus, the title of the Company and its
               subsidiaries to their oil and gas properties and
               assets is consistent with industry standards. 
               Certain of the Company's and its subsidiaries' assets
               are subject to liens and pledges in connection with
               the Company's financings.  Except as otherwise set
               forth in the Prospectus, the Company has no notice of
               any material claim of any sort that has been asserted
               by anyone adverse to the rights of the Company or its
               subsidiaries to the continued possession of their
               leased or subleased premises or property under such
               leases or subleases, where such claim would have a
               material adverse effect upon the Company's or its
               subsidiaries' business or assets, taken as a whole.

                    (o)  The Company and its subsidiaries are
               insured by recognized financially sound and reputable
               insurance companies in such amounts with such
               deductibles and covering such losses and risks as are
               prudent and customary in the businesses in which they
               are engaged; and neither the Company nor its
               subsidiaries believes that it will not be able to
               renew its existing insurance coverage as and when
               such coverage expires or to obtain similar coverage
               from similar insurers as may be necessary to continue
               its business at a cost that would not materially and
               adversely affect the condition, financial or
               otherwise, or the earnings, business or operations of
               the Company and its subsidiaries, taken as a whole,
               except as described in or contemplated by the
               Prospectus.

                    (p)  The accountants who certified the financial
               statements and supporting schedules included in the
               Registration Statement are independent public
               accountants as required by the Securities Act and the
               Rules and Regulations.

                    (q)  The financial statements, together with
               related schedules and notes forming part of the
               Registration Statement and the Prospectus (and any
               amendment or supplement thereto), present fairly the
               consolidated financial position, results of
               operations and changes in financial position of the
               Company and its subsidiaries on the basis stated in
               the Registration Statement at the respective dates or
               for the respective periods to which they apply; such
               financial statements and related schedules and notes
               have been prepared in accordance with generally
               accepted accounting principles consistently applied
               throughout the periods involved, except as disclosed
               therein; the other financial and statistical
               information and data set forth in the Registration
               Statement and the Prospectus (and any amendment or
               supplement thereto) is, in all material respects,
               accurately presented and prepared on a basis
               consistent with such financial statements and the
               books and records of the Company; and the supporting
               schedules included in the Registration Statement
               present fairly the information required to be stated
               therein.

                    (r)  The Ryder Scott Company ("Ryder Scott"),
               who has taken such actions with respect to the
               Company's estimates of its oil and gas reserves as is
               set forth in the Prospectus, are independent
               petroleum engineers with respect to the Company.  The
               factual data provided to Ryder Scott in the
               preparation of their estimates of the Company's oil
               and gas reserves were accurate in all material
               respects with the applicable requirements of
               Rule 4-10 of Regulations S-X and Securities Act
               Industry Guide 2.  The projections and assumptions
               provided to Ryder Scott by the Company were
               reasonable based upon the information available to
               the Company at the time such information was so
               provided.

                    (s)  Except as disclosed in the Prospectus, the
               Company and its subsidiaries have such permits,
               licenses, franchises and authorizations of
               governmental or regulatory authorities ("permits"),
               including, without limitation, under any applicable
               Environmental Laws, as are necessary to own, lease
               and operate their respective properties and to
               conduct their businesses as described in the
               Prospectus, except where the failure to have such
               permits would not have a material adverse effect on
               the Company and its subsidiaries taken as a whole;
               the Company and its subsidiaries have fulfilled and
               performed all of their material obligations due to be
               performed with respect to such permits and, except as
               disclosed in the Prospectus, no event has occurred
               which allows, or after notice or lapse of time would
               allow, revocation or termination thereof or result in
               any other material impairment of the rights of the
               holder of any such permit; and, except as described
               in the Prospectus, such permits contain no
               restrictions that are materially burdensome to the
               Company or its subsidiary.

                    (t)  In the ordinary course of its business, the
               Company conducts a periodic review of the effect of
               Environmental Laws on the business, operations and
               properties of the Company and its subsidiaries.  As
               of the date of this Agreement, the associated costs
               and liabilities to the Company and its subsidiaries
               relating to such Environmental Laws (including,
               without limitation, any capital or operating 
               expenditures required for clean-up, closure of
               properties or compliance with Environmental Laws or
               any permit, license or approval, any related
               constraints on operating activities and any potential
               liabilities to third parties) would not, singly or in
               the aggregate, have a material adverse effect on the
               Company and its subsidiaries, taken as a whole.

                    (u)  No holder of any security of the Company
               has any right to require registration of shares of
               Common Stock or any other security of the Company
               except as set forth in the Prospectus, and no
               security holders of the Company that have rights to
               require registration of any shares of Common Stock or
               other securities of the Company are being excluded
               from participating in the filing of the Registration
               Statement and the consummation of the transactions
               contemplated therein except with their express
               written consent.

                    (v)  The Shares are listed on the NASDAQ Stock
               Market National Market.

                    (w)  Except as described in the Prospectus, the
               Company, its subsidiaries which have been or are
               consolidated with the Company for the purpose of
               filing income tax returns (the "Consolidated Tax
               Subsidiaries") and any group of which the Company or
               any of its Consolidated Tax Subsidiaries is or was a
               member for income tax purposes have filed all
               foreign, federal, state and local tax returns that
               are required to be filed or have requested extensions
               thereof and have paid all taxes required to be paid
               by any of them and any related or similar assessment,
               fine or penalty levied against any of them, to the
               extent that any of the foregoing is due and payable,
               except for any such tax, assessment, fine or penalty
               that is currently being contested in good faith and
               by appropriate proceedings; and adequate charges,
               accruals and reserves have been made in the
               applicable financial statements referred to in
               Section 7(p) above in respect of all foreign,
               federal, state and local taxes for all periods as to
               which the tax liability of the Company, its
               Consolidated Tax Subsidiaries and any group of which
               the Company or any of its Consolidated Tax
               Subsidiaries is or was a member for income tax
               purposes has not been finally determined.

                    (x)  Neither the Company nor its subsidiaries
               have violated any federal or state law relating to
               discrimination in the hiring, promotion or pay of
               employees nor any applicable federal or state wages
               and hours laws, nor any provisions of the Employee
               Retirement Income Security Act or the rules and
               regulations promulgated thereunder, which in each
               case would reasonably be expected to result in any
               material adverse change in the business, prospects,
               financial condition or results of operation of the
               Company and its subsidiaries, taken as a whole.

                    (y)  The Company is not an "investment company"
               or an entity "controlled" by an "investment company"
               as such terms are defined in the Investment Company
               Act of 1940, as amended (the "Investment Company
               Act").

                    (z)  The Company has complied with, and is and
               will be in compliance with, the provisions of that
               certain Florida act relating to disclosure of doing
               business with Cuba, codified as Section 517.075 of
               the Florida statutes, and the rules and regulations
               thereunder (collectively, the "Cuba Act") or is
               exempt therefrom.

                    (aa) Except for the consent of the Selling
               Stockholder to the number of Shares to be sold by it
               pursuant to Section 2 of this Agreement, no vote or
               consent of any stockholder of the Company, and no
               consent, approval or waiver of any party to or any
               person entitled to any right or benefit under the
               Company's charter or amended by-laws or any other
               instrument or agreement to which the Company is a
               party or by which it is bound or under which it is
               entitled to any right or benefit, is required in
               connection with the offering, sale or purchase by the
               Underwriters of any of the Shares under this
               Agreement or the consummation of any of the other
               transactions contemplated hereby.

                    (bb) The Company has not taken, directly or
               indirectly, any action designed to cause or to result
               in, or that has constituted or which might reasonably
               be expected to cause or result in, the stabilization
               or manipulation of the price of any security of the
               Company to facilitate the sale or resale of the
               Shares.

                    (cc) Except as described in the Prospectus under
               "Underwriting" and on the cover page, there are no
               claims, payments, issuances, arrangements or
               understandings for services in the nature of a
               finder's or origination fee with respect to the sale
               of the Shares hereunder.

               8.   Representations and Warranties of the Selling 
          Stockholder.  The Selling Stockholder represents and
          warrants to, and covenants and agrees with, each
          Underwriter as follows:

                    (a)  The Selling Stockholder has been duly
               incorporated and is validly existing as a corporation
               under the laws of its jurisdiction of incorporation
               and has full legal right, corporate power and
               authority to enter into and perform its obligations
               under this Agreement.

                    (b)  This Agreement has been duly authorized,
               executed and delivered by or on behalf of the Selling
               Stockholder.

                    (c)  The execution and delivery by the Selling
               Stockholder of, and the performance by the Selling
               Stockholder of its obligations under, this Agreement
               will not contravene or conflict with, result in a
               breach of, or constitute a default under, the charter
               or by-laws or other organization documents of the
               Selling Stockholder or, to the best knowledge of the
               Selling Stockholder, the terms of any agreement or
               instrument to which the Selling Stockholder is a
               party or by which it is bound or under which it is
               entitled to any right or benefit, any provision of
               applicable law or any judgment, order, decree or
               regulation applicable to the Selling Stockholder of
               any court, regulatory body, administrative agency,
               governmental body or arbitrator having jurisdiction
               over the Selling Stockholder.

                    (d)  The Selling Stockholder has, and on the
               Closing Date will have, valid title to all of the
               Shares which may be sold by the Selling Stockholder
               under this Agreement and the legal right and power,
               and all authorizations and approvals required by law
               and under its charter or by-laws or other
               organization documents, to sell, transfer and deliver
               all of the Shares which may be sold by the Selling
               Stockholder under this Agreement and to comply with
               its other obligations hereunder and thereunder.

                    (e)  Assuming that the Underwriters purchase the
               Shares which are sold by the Selling Stockholder
               pursuant to this Agreement for value, in good faith
               and without notice of any adverse claim, the delivery
               of the Shares which are sold by the Selling
               Stockholder pursuant to this Agreement will pass
               title to such Shares, free and clear of any security
               interests, claims, liens, equities and other
               encumbrances.

                    (f)  To the best knowledge of the Selling
               Stockholder, no authorization, approval, consent or
               order of, or qualification, registration or filing
               with, any court or governmental authority or agency
               is required for the consummation by the Selling
               Stockholder of the transactions contemplated in this
               Agreement, except such as have been obtained under
               the Securities Act and the Rules and Regulations and
               except such as may be required under the securities
               or blue sky laws of any jurisdiction in connection
               with the purchase and distribution of Shares by the
               Underwriters.

                    (g)  The Selling Stockholder does not have any
               registration or other similar rights to have any
               securities (debt or equity) registered under the
               Securities Act by the Company except for such rights
               as are described in the Prospectus under "Shares
               Eligible for Future Sale."

                    (h)  Except for the consent of the Selling
               Stockholder to the number of Shares to be sold by the
               Selling Stockholder pursuant to Section 2 of this
               Agreement, to the best knowledge of the Selling
               Stockholder, no consent, approval or waiver under any
               instrument or agreement to which such Selling
               Stockholder is a party or by which it is bound or
               under which it is entitled to any right or benefit,
               is required in connection with the offering, sale or
               purchase by the Underwriters of any of the Shares
               which may be sold by such Selling Stockholder under
               this Agreement or the consummation by the Selling
               Stockholder of any of the other transactions
               contemplated hereby; and the Selling Stockholder
               hereby consents to the offering and sale by the
               Selling Stockholder of the number of Shares to be
               sold by it pursuant to this Agreement and to the
               consummation of the other transactions contemplated
               hereby and, to the extent that any of the foregoing
               might conflict with, result in a breach of, or
               constitute a default under any instrument or
               agreement to which the Selling Stockholder is a party
               or by which it is bound or under which it is entitled
               to any right or benefit, the Selling Stockholder
               hereby waives such conflict, breach or default.

                    (i)  All information furnished by or on behalf
               of the Selling Stockholder in writing expressly for
               use in the Registration Statement and Prospectus is,
               and on the Closing Date will be, true, correct and
               complete in all material respects, and does not, and
               on the Closing Date will not, contain any untrue
               statement of a material fact or omit to state any
               material fact necessary to make such information not
               misleading; and the Selling Stockholder confirms as
               accurate the number of shares of Common Stock set
               forth opposite the Selling Stockholder's name in the
               Prospectus under the caption "Principal
               Stockholders," as of the date of the Prospectus and
               on the date hereof, prior to the sale of any Shares.

                    (j)  The Selling Stockholder has not taken,
               directly or indirectly, any action designed to cause
               or to result in, or that has constituted or which
               might reasonably be expected to cause or result in,
               the stabilization or manipulation of the price of any
               security of the Company to facilitate the sale or
               resale of the Shares.

               9.   Indemnification.

                    (a)  The Company agrees to indemnify and hold
               harmless each Underwriter and each person, if any,
               who controls any Underwriter within the meaning of
               Section 15 of the Securities Act or Section 20 of the
               Exchange Act, from and against any and all losses,
               claims, damages, liabilities and judgments caused by
               any untrue statement or alleged untrue statement of a
               material fact contained in the Registration Statement
               or the Prospectus (as amended or supplemented if the
               Company shall have furnished any amendments or
               supplements thereto) or any preliminary prospectus,
               or caused by any omission or alleged omission to
               state therein a material fact required to be stated
               therein or necessary to make the statement therein
               not misleading, except insofar as such losses,
               claims, damages, liabilities or judgments are caused
               by any untrue statement or omission or alleged untrue
               statement or omission based upon information relating
               to (x) any Underwriter furnished in writing to the
               Company by such Underwriter expressly for use therein
               or (y) the Selling Stockholder furnished in writing
               to the Company by the Selling Stockholder expressly
               for use therein; provided, however, that the
               foregoing indemnity agreement with respect to any
               preliminary prospectus shall not inure to the benefit
               of any Underwriter from whom the person asserting any
               such losses, claims, damages or liabilities purchased
               Shares, or any person controlling such Underwriter,
               if a copy of the Prospectus (as then amended or
               supplemented if the Company shall have furnished any
               amendments or supplements thereto) was not sent or
               given by or on behalf of such Underwriter to such
               person, if required by law so to have been delivered,
               at or before the written confirmation of the sale of
               the Shares to such person, and if the Prospectus (as
               so amended or supplemented) would have cured the
               defect giving rise to such loss, claim, damage or
               liability.

                    (b)  In case any action shall be brought against
               any Underwriter or any person controlling such
               Underwriter, based upon any preliminary prospectus,
               the Registration Statement or the Prospectus or any
               amendment or supplement thereto and with respect to
               which indemnity may be sought against the Company,
               such Underwriter shall promptly notify the Company in
               writing and the Company shall assume the defense
               thereof, including the employment of counsel
               reasonably satisfactory to such indemnified party and
               payment of all reasonable fees and expenses.  Such
               Underwriter or any such controlling person shall have
               the right to employ separate counsel in any such
               action and participate in the defense thereof, but
               the fees and expenses of such counsel shall be at the
               expense of such Underwriter or such controlling
               person unless (i) the employment of such counsel
               shall have been specifically authorized in writing by
               the Company, (ii) the Company shall have failed to
               assume the defense and employ counsel or (iii) the
               named parties to any such action (including any
               impleaded parties) include both such Underwriter or
               such controlling person and the Company and such
               Underwriter or such controlling person shall have
               been advised by such counsel that there may be one or
               more legal defenses available to it which are
               different from or in addition to those available to
               the Company (in which case the Company shall not have
               the right to assume the defense of such action on
               behalf of such Underwriter or such controlling
               person, it being understood, however, that the
               Company shall not, in connection with any one such
               action or separate but substantially similar or
               related actions in the same jurisdiction arising out
               of the same general allegations or circumstances, be
               liable for the fees and expenses of more than one
               separate firm of attorneys for such Underwriter and
               controlling persons, which firm shall be designated
               in writing by S.G. Warburg & Co. Inc., and that all
               such fees and expenses shall be reimbursed as they
               are incurred).  The Company shall not be liable for
               any settlement of any such action effected without
               its written consent but if settled with the written
               consent of the Company, the Company agrees to
               indemnify and hold harmless such Underwriter and any
               such controlling person from and against any loss or
               liability by reason of such settlement. 
               Notwithstanding the foregoing sentence, if at any
               time an indemnified party shall have requested an
               indemnifying party to reimburse the indemnified party
               for fees and expenses of counsel as contemplated by
               the second sentence of this paragraph, the
               indemnifying party agrees that it shall be liable for
               any settlement of any proceeding effected without its
               written consent if (i) such settlement is entered
               into more than 60 business days after receipt by such
               indemnifying party of the aforesaid request and
               (ii) such indemnifying party shall not have
               reimbursed the indemnified party in accordance with
               such request before the date of such settlement.  No
               indemnifying party shall, without the prior written
               consent of the indemnified party, effect any
               settlement of any pending or threatened proceeding in
               respect of which any indemnified party is or could
               have been a party and indemnity could have been
               sought hereunder by such indemnified party, unless
               such settlement includes unconditional release of
               such indemnified party from all liability on claims
               that are the subject matter of such proceeding.  The
               Company's obligations under this  paragraph (b) shall
               not impair the Company's right to indemnification
               under Sections 9(c) and 9(d).

                    (c)  Each Underwriter agrees, severally and not
               jointly, to indemnify and hold harmless the Company,
               its directors, its officers who sign the Registration
               Statement, the Selling Stockholder and any person
               controlling the Company or the Selling Stockholder
               within the meaning of Section 15 of the Securities
               Act or Section 20 of the Exchange Act, to the same
               extent as the foregoing indemnity from the Company to
               the Underwriters but only with reference to
               information relating to such Underwriter furnished in
               writing by such Underwriter expressly for use in the
               Registration Statement, the Prospectus or any
               preliminary prospectus.  In case any action shall be
               brought against the Selling Stockholder, the Company,
               any of its directors, any such officer or any person
               controlling the Company or the Selling Stockholder
               based on the Registration Statement, the Prospectus
               or any preliminary prospectus and in respect of which
               indemnity may be sought against an Underwriter, such
               Underwriter shall have the rights and duties given to
               the Company (except that if the Company shall have
               assumed the defense thereof, such Underwriter shall
               not be required to do so, but may employ separate
               counsel therein and participate in the defense
               thereof but the fees and expenses of such counsel
               shall be at the expense of such Underwriter), and the
               Company, its directors, any such officers and any
               person controlling the Company shall have the rights
               and duties given to each Underwriter by Section 9(b)
               hereof.

                    (d)  The Selling Stockholder agrees to indemnify
               and hold harmless the Company, its directors, its
               officers who sign the Registration Statement, each
               Underwriter and any person controlling the Company or
               any such Underwriter within the meaning of Section 15
               of the Securities Act or Section 20 of the Exchange
               Act, to the same extent as the foregoing indemnity
               from the Company to each Underwriter but only with
               reference to information relating to the Selling
               Stockholder furnished in writing by the Selling
               Stockholder expressly for use in the Registration
               Statement, the Prospectus or any preliminary
               prospectus.  In case any action shall be brought
               against any Underwriter, the Company, any of its
               directors, any of its officers or any person
               controlling the Company or such Underwriter based on
               the Registration Statement, the Prospectus or any
               preliminary prospectus and in respect of which
               indemnity may be sought against the Selling
               Stockholder, the Selling Stockholder shall have the
               rights and duties given to the Company (except that
               if the Company shall have assumed the defense
               thereof, the Selling Stockholder shall not be
               required to do so, but may employ separate counsel
               therein and participate in the defense thereof but
               the fees and expenses of such counsel shall be at the
               expense of the Selling Stockholder), and the Company
               and such Underwriter, their respective directors, any
               such officers and any persons controlling the Company
               or such Underwriter shall have the rights and duties
               given to each Underwriter by Section 9(b) hereof;
               provided, however, that the aggregate amount the
               Selling Stockholder shall be liable for under this
               Section 9(d) shall not exceed the amount of the
               aggregate gross proceeds of the Shares offered and
               sold pursuant to the terms of this Agreement on
               behalf of the Selling Stockholder to the public.

                    (e)  If the indemnification provided for in this
               Section 9 is unavailable or insufficient to an
               indemnified party in respect of any losses, claims,
               damages, liabilities or judgments referred to herein,
               then each indemnifying party, in lieu of indemnifying
               such indemnified party, shall contribute to the
               amount paid or payable by such indemnified party as a
               result of such losses, claims, damages, liabilities
               and judgments (i) such proportion as is appropriate
               to reflect the relative benefits received by the
               Company and Selling Stockholder on the one hand and
               of the Underwriters on the other hand from the
               offerings of the Shares or (ii) if the allocation
               provided by clause (i) above is not permitted by
               applicable law, in such proportion as is appropriate
               to reflect not only the relative benefits referred to
               in clause (i) above but also the relative fault of
               the Company and the Selling Stockholder on the one
               hand and of the Underwriters on the other hand in
               connection with the statements or omissions which
               resulted in such losses, claims, damages, liabilities
               or judgments, as well as any other relevant equitable
               considerations.  The relative benefits received by
               the Company and the Selling Stockholder on the one
               hand and the Underwriters on the other hand in
               connection with the offering of the Shares shall be
               deemed to be in the same respective proportions as
               the net proceeds from the offering of the Shares
               (before deducting expenses) received by the Company
               and the Selling Stockholder and the total
               underwriting discounts and commissions received by
               the Underwriters, in each case as set forth in the
               table (including the footnotes thereto) on the cover
               of the Prospectus, bear to the aggregate public
               offering price of the Shares.  The relative fault of
               the Company and the Selling Stockholder on the one
               hand and the Underwriters on the other hand shall be
               determined by reference to, among other things,
               whether the untrue or alleged untrue statement of a
               material fact or the omission or alleged omission to
               state a material fact relates to information supplied
               by the Company or the Selling Stockholder or by the
               Underwriters and the parties' relative intent,
               knowledge, access to information and opportunity to
               correct or prevent such statement or mission.  The
               Underwriters' respective obligations to contribute
               pursuant to this Section 9 are several in proportion
               to the respective number of Shares they have purchase
               hereunder, and not joint.  

                    (f)  The Company, the Selling Stockholder and
               the Underwriters agree that it would not be just or
               equitable if contribution pursuant to this Section 9
               were determined by pro rata allocation (even if the
               Underwriters were treated as one entity for such
               purpose) or by any other method of allocation that
               does not take account of the equitable considerations
               referred to in the immediately preceding paragraph. 
               The amount paid or payable by an indemnified party as
               a result of the losses, claims, damages and
               liabilities referred to in the immediately preceding
               paragraph shall be deemed to include, subject to the
               limitations set forth above, any legal or other
               expenses reasonably incurred by such indemnified
               party in connection with investigating or defending
               any such action or claim.  Notwithstanding the
               provisions of this Section 9, (i) no Underwriter
               shall be required to contribute any amount in excess
               of the amount by which the total price at which the
               Shares underwritten by it and distributed to the
               public were offered to the public exceeds the amount
               of any damages that such Underwriter has otherwise
               been required to pay by reason of such untrue or
               alleged untrue statement or omission or alleged
               omission and (ii) the Selling Stockholder shall not
               be required to contribute any amount in excess of the
               aggregate gross proceeds of the Shares offered and
               sold pursuant to the terms of this Agreement on
               behalf of the Selling Stockholder to the public. 
               Notwithstanding the provisions of the Section 9, no
               person guilty of fraudulent misrepresentation (within
               the meaning of Section 11(f) of the Securities Act)
               shall be entitled to contribution from any person who
               was not guilty of such fraudulent misrepresentation. 
               The remedies provided for in this Section 9 are not
               exclusive and shall not limit any right or remedies
               which may otherwise be available to any indemnified
               party at law or in equity.  

                    (g)  Any losses, claims, damages, liabilities or
               expenses for which an indemnified party is entitled
               to indemnification or contribution under this
               Section 9 shall be paid by the indemnifying party to
               the indemnified party as such losses, claims,
               damages, liabilities or expenses are incurred.

                    (h)  To the extent that both the Company and the
               Selling Stockholder are subject to any losses,
               claims, damages, liabilities or expenses as
               indemnifying parties under this Section 9, their
               obligations under this Section 9 shall be several and
               not joint.

               10.  Conditions of Underwriters' Obligations.  The
          several obligations of the Underwriters to purchase the
          Firm Shares under this Agreement are subject to the
          satisfaction of each of the following conditions:

                    (a)  The Underwriter shall have received on the
               Closing Date a certificate, dated the Closing Date
               and signed by the President or Senior Vice President
               and the principal financial or accounting officer of
               the Company, to the effect that the representations
               and warranties of the Company contained in this
               Agreement are true and correct on and as of the
               Closing Date and that the Company has complied with
               all of the agreements and satisfied all of the
               conditions on its part to be performed or satisfied
               hereunder on or before the Closing Date.

                    (b)  (i) Since the date of the latest balance
               sheet included in the Registration Statement and the
               Prospectus, there shall not have been any material
               adverse change, or any development involving a
               prospective material adverse change, in the
               condition, financial or otherwise, or in the
               earnings, affairs or business prospects, whether or
               not arising in the ordinary course of business, of
               the Company, (ii) since the date of the latest
               balance sheet included in the Registration Statement
               and the Prospectus there shall not have been any
               change, or any development involving a prospective
               material adverse change, in the capital stock or in
               the long-term debt of the Company from that set forth
               in the Registration Statement and Prospectus,
               (iii) the Company and its subsidiaries shall have no
               liability or obligation, direct or contingent, which
               is material to the Company and its subsidiaries,
               taken as a whole, other than those reflected in the
               Registration Statement and the Prospectus and (iv) on
               the Closing Date the Underwriters shall have received
               a certificate dated the Closing Date, signed by the
               President or Senior Vice President and the principal
               financial or accounting officer of the Company,
               confirming the matters set forth in this paragraph
               (b) of this Section 10.

                    (c)  You shall have received on the Closing Date
               an opinion (satisfactory to you and counsel for the
               Underwriters), dated the Closing Date, of Jenkens &
               Gilchrist, a Professional Corporation, counsel for
               the Company, to the effect that:

                         (i)  The Company is a corporation duly
                    incorporated and validly existing in good
                    standing under the laws of the State of Delaware
                    with requisite corporate power and authority to
                    own, lease and operate its properties and to
                    conduct its business as described in the
                    Registration Statement and the Prospectus (and
                    any amendment or supplement thereto) and to
                    enter into and perform its obligations under
                    this Agreement, and is duly registered and
                    qualified to conduct its business and is in good
                    standing in each jurisdiction or place where the
                    nature of its properties or the conduct of its
                    business requires such registration or
                    qualification, except where the failure so to
                    register or qualify does not have a material
                    adverse effect on the condition (financial or
                    other), business, properties, net worth or
                    results of operations of the Company and its
                    subsidiary taken as a whole.

                         (ii) The Company's subsidiary is a
                    corporation duly incorporated and validly
                    existing in good standing under the laws of the
                    jurisdiction of its organization, with requisite
                    corporate power and authority to own, lease, and
                    operate its properties and to conduct its
                    business as described in the Registration
                    Statement and the Prospectus (and any amendment
                    or supplement thereto); and all the outstanding
                    shares of capital stock of the Company's
                    subsidiary have been duly authorized and validly
                    issued, are fully paid and nonassessable, and,
                    to the knowledge of such counsel, are owned by
                    the Company directly, free and clear of any
                    security interest, or lien, adverse claim,
                    equity or other encumbrance except for the
                    security interest granted to INCC pursuant to
                    the Credit Agreement.

                         (iii)     The Shares to be issued and sold
                    by the Company hereunder, when issued and
                    delivered to the Underwriters against payment
                    therefore as provided by this Agreement, will
                    have been validly issued and will be fully paid
                    and non-assessable, and the issuance of such
                    Shares is not subject to any statutory, charter
                    or, to the knowledge of such counsel,
                    contractual preemptive or similar rights; the
                    form of certificates used to evidence the Common
                    Stock is in due and proper form and complies
                    with all applicable requirements of the charter
                    and by-laws of the Company and the General
                    Corporation Law of the State of Delaware; the
                    authorized capital stock of the Company is as
                    set forth under the caption "Capitalization" in
                    the Prospectus; the authorized capital stock of
                    the Company conforms in all material respects as
                    to legal matters to the description thereof
                    contained in the Prospectus under the caption
                    "Description of Capital Stock;" the four million
                    shares of Common Stock issued in the Company's
                    public offering that closed on August 6, 1993
                    and the shares of Common Stock owned by the
                    Selling Stockholder have been duly issued and
                    are fully paid, non-assessable and not subject
                    to any preemptive or, to the knowledge of such
                    counsel, contractual preemptive rights or
                    similar rights.

                         (iv) The Shares to be sold by the Selling
                    Stockholder to the several Underwriters
                    hereunder have been duly authorized, and when
                    delivered to the Underwriters against payment
                    therefor as provided by this Agreement, will
                    have been validly issued and will be fully paid
                    and non-assessable, and are not subject to any
                    preemptive, or to the knowledge of such counsel,
                    contractual preemptive or similar rights.

                         (v)  This Agreement has been duly
                    authorized, executed and delivered by the
                    Company and is a valid and binding agreement of
                    the Company enforceable against the Company in
                    accordance with its terms, except to the extent
                    that rights to indemnification thereunder may be
                    limited by federal or state securities laws and
                    policies embodied therein, or to the extent that
                    such obligations are subject to or affected or
                    limited by (i) applicable liquidation,
                    conservatorship, bankruptcy, insolvency,
                    reorganization, fraudulent conveyance,
                    moratorium or other laws affecting creditors'
                    rights or in the collection of debtors'
                    obligations generally from time to time in
                    effect, or (ii) general principles of equity
                    (whether enforceability is considered in a
                    proceeding in equity or at law), including the
                    qualification that the availability of the
                    remedy of specific performance or injunction
                    relief or other equitable remedies is subject to
                    the discretion of the court before which any
                    such proceeding therefor may be brought and
                    including standards of good faith, fair dealing
                    and reasonableness that may be applied by a
                    court to the exercise of certain rights and
                    remedies.

                         (vi) The Registration Statement has become
                    effective under the Securities Act; to such
                    counsel's knowledge, any required filings of the
                    Prospectus, and any supplements thereto,
                    pursuant to Rule 424(b) of the Rules and
                    Regulations have been made in the manner and
                    within the time period required by such
                    Rule 424(b); and, to such counsel's knowledge,
                    no stop order suspending its effectiveness has
                    been issued and no proceedings for that purpose
                    are, to the knowledge of such counsel, pending
                    before or contemplated by the Commission.

                         (vii)     To such counsel's  knowledge,
                    there are no legal or governmental proceedings
                    pending or threatened which are required to be
                    disclosed in the Registration Statement, other
                    than those disclosed therein.

                         (viii)    The statements in the Prospectus
                    under "Risk Factors--Shares Eligible for Future
                    Sale," "Management's Discussion and Analysis of
                    Financial Condition and Results of Operations of
                    the Company--Capital Resources and Liquidity,"
                    "Business-- Regulation," "Business--Title to
                    Properties," "Selling Stockholder," "Shares
                    Eligible for Future Sale," "Description of
                    Capital Stock," and "Underwriting," in each case
                    insofar as such statements constitute summaries
                    of the legal matters, documents or proceedings
                    referred to therein, when read together with
                    related information contained in the
                    Incorporated Documents, fairly present, in all
                    material respects, the information called for
                    with respect to such legal matters, documents
                    and proceedings referred to therein and fairly
                    summarize, in all material respects, the matters
                    referred to therein (it being understood that
                    such counsel expresses no opinion as to factual
                    matters or as to the financial statements or
                    schedules or other financial, statistical or
                    reserve data included in the Registration
                    Statement or Prospectus or any amendments or
                    supplements thereto specifically).

                         (ix) To such counsel's  knowledge, there
                    are no contracts, indentures, mortgages, loan
                    agreements, notes, leases or other instruments
                    required to be described or referred to in the
                    Registration Statement or to be filed as
                    exhibits thereto other than those described or
                    referred to therein or filed as exhibits
                    thereto, and the descriptions thereof and
                    references thereto are correct in all material
                    respects.

                         (x)  To such counsel's knowledge, neither
                    the Company nor its subsidiary is in violation
                    of its respective charter or bylaws and, to such
                    counsel's knowledge, neither the Company nor any
                    of its subsidiaries is in default in the
                    performance of any obligation, debenture, note
                    or any other evidence of indebtedness or in any
                    other agreement, indenture or instrument, except
                    for any default which will not have a material
                    adverse effect to the Company and its subsidiary
                    taken as a whole.

                         (xi) The execution, delivery and 
                    performance of this Agreement by the Company,
                    the issuance and the sale of the Shares to be
                    sold to the several Underwriters by the Company
                    and the sale of the Shares to be sold to the
                    several Underwriters by the Selling Stockholder
                    hereunder will not require the Company to obtain
                    any consent, approval, authorization or other
                    order of any court, regulatory body,
                    administrative agency or other governmental body
                    (except as such has been obtained or may be
                    required under the Securities Act and the Rules
                    and Regulations or other securities or blue sky
                    laws) and will not conflict with or constitute a
                    breach of any of the terms or provisions of, or
                    a default under, the charter or bylaws of the
                    Company or its subsidiary or, to such counsel's
                    knowledge, any agreement indenture or other
                    instrument or, to such counsel's knowledge,
                    violate or conflict with any laws,
                    administrative regulations or rulings or court
                    decrees applicable to the Company or its
                    subsidiaries or their respective properties
                    except for any such conflict, breach, violation
                    or default that is not material to the business
                    of the Company and its subsidiary taken as a
                    whole.

                         (xii)     Such counsel does not know of any
                    legal or governmental proceedings pending or
                    threatened to which the Company or its
                    subsidiary is a party or to which any of their
                    respective property is subject which is required
                    to be described in the Registration Statement or
                    the Prospectus and is not so described.

                         (xiii)    To such counsel's knowledge,
                    (1) except as described in the Prospectus, no
                    holder of any security of the Company has any
                    right to require registration of shares of
                    Common Stock or any other security of the
                    Company and (2) there are no rights of any
                    security holders of the Company to require
                    registration of any shares of Common Stock or
                    other securities of the Company because of the
                    filing of the Registration Statement and the
                    consummation of the transactions contemplated
                    therein, except such rights as have been
                    effectively waived.

                         (xiv)     Except for the consent of the
                    Selling Stockholder to the number of Shares to
                    be sold by it pursuant to Section 2 of this
                    Agreement, no vote or consent of any stockholder
                    of the Company, and no consent, approval or
                    waiver of any party to or any person entitled to
                    any right or benefit under the Company's charter
                    or by-laws or, to such counsel's knowledge, any
                    other instrument or agreement to which the
                    Company is a party or by which it is bound
                    or under which it is entitled to any right or
                    benefit, is required in connection with the
                    offering, sale or purchase by the Underwriter of
                    any of the Shares under this Agreement or the
                    consummation of any of the other transactions
                    contemplated by this Agreement.

                         (xv) To such counsel's  knowledge, there
                    are no persons with registration or other
                    similar rights to have any securities (debt or
                    equity) (A) registered pursuant to the
                    Registration Statement or included in the
                    offerings contemplated by this Agreement except
                    for the Selling Stockholder or (B) except for
                    such rights as are accurately described, in all
                    material respects, in the Prospectus under
                    "Shares Eligible for Future Sale", except such
                    rights as have been waived.

                         (xvi)     The Company is not an "investment 
                    company" or an entity "controlled" by an
                    "investment company," as such terms are defined
                    in the Investment Company Act.

                         (xvii)    Each of the Incorporated
                    Documents (except for the financial statements,
                    schedules and notes thereto and other financial,
                    statistical and reserve data, as amended,
                    included therein, as to which counsel need not
                    express any opinion), when they were filed (or,
                    if an amendment with respect to any Incorporated
                    Document was filed, when such amendment was
                    filed) complied as to form in all material
                    respects with the Exchange Act and the rules and
                    regulations promulgated thereunder.

                         (xviii)   The Registration Statement and
                    the Prospectus and any supplement or amendment
                    thereto (except for financial statements,
                    schedules and other financial, statistical and
                    reserve data, as to which no opinion need be
                    expressed) comply as to form in all material
                    respects with the Securities Act and the Rules
                    and Regulations.  

                         (xix)     Such counsel has participated in
                    conferences with officers and other
                    representatives of the Company and
                    representatives of the independent public
                    accountants for the Company and with your
                    representatives at which the contents of the
                    Registration Statement and the Prospectus, and
                    any supplements or amendments thereto, and
                    related matters were discussed and, although
                    such counsel is not passing upon and does not
                    assume any responsibility for the accuracy,
                    completeness or fairness of the statements
                    contained in the Registration Statement or the
                    Prospectus (other than as specified above in
                    clause viii), and any supplements or amendments
                    thereto, on the basis of the foregoing, nothing
                    has come to such counsel's attention that would
                    lead them to believe that either the
                    Registration Statement or any amendments thereto
                    at the time the Registration Statement or such
                    amendments became effective, contained an untrue
                    statement of a material fact necessary in order
                    to make the statements therein, in the light of
                    the circumstances under which they were made,
                    not misleading (it being understood that such
                    counsel need express no belief as to the
                    financial statements or schedules or other
                    financial, statistical or reserve data included
                    in the Registration Statement or the Prospectus
                    or any amendments or supplements thereto).

                    In rendering such opinion, such counsel may rely
               (A) as to matters involving the application of laws
               of any jurisdiction other than the State of Texas,
               the General Corporation Law of the State of Delaware,
               or the federal law of the United States, to the
               extent they deem proper and specified in such
               opinion, upon the opinion (which shall be dated the
               Closing Date, shall be satisfactory in form and
               substance to the Underwriter, shall expressly state
               that the Underwriter may rely on such opinion as if
               it were address to them and shall be furnished to the
               Underwriter) of other counsel of good standing whom
               they believe to be reliable and who are satisfactory
               to counsel for the Underwriter, provided that
               Jenkens & Gilchrist, a Professional Corporation,
               shall further state that they believe that they and
               the Underwriters are justified in relying upon such
               opinion of other counsel, and (B) as to matters of
               fact, to the extent they deem proper, on certificates
               of responsible officers of the Company and public
               officials.

                    The opinion described in this paragraph (c)
               shall be rendered to you at the request of the
               Company and shall so state therein.  References to
               the Prospectus in this paragraph (c) include any
               supplements thereto at the Closing Date.

                    (d)  You shall have received on the Closing Date
               the opinion of Ropes & Gray, counsel for the Selling
               Stockholder, dated the Closing Date, to the effect
               that:

                         (i)  The Selling Stockholder has full
                    right, power and authority to enter into this
                    Agreement.  The execution, delivery and
                    performance of this Agreement by the Selling
                    Stockholder and the consummation by the Selling
                    Stockholder of the transactions contemplated
                    thereby will not conflict with or result in a
                    breach or violation of any of the terms or
                    provisions of, or constitute a default under,
                    any statute, any indenture, mortgage, deed of
                    trust, loan agreement or other agreement or
                    instrument known to such counsel to which the
                    Selling Stockholder is a party or by which the
                    Selling Stockholder is bound or to which any of
                    the property or assets of the Selling
                    Stockholder is subject, nor will such actions
                    result in any violation of the provisions of the
                    Selling Stockholder's charter or by-laws or any
                    statute or any order, rule or regulation known
                    to such counsel of any court or governmental
                    agency or body having jurisdiction over the
                    Selling Stockholder or the property or assets of
                    the Selling Stockholder; and, except for the
                    registration of the Shares under the Securities
                    Act of 1933 and such consents, approvals,
                    authorizations, registrations, qualifications,
                    filings or registrations as may be required
                    under the Securities Exchange Act of 1934, as
                    amended and applicable state securities laws in
                    connection with the purchase and distribution of
                    the Shares by the Underwriters, no consent,
                    approval, authorization or order of, or filing
                    or registration with, any such court or
                    governmental agency or body is required for the
                    execution, delivery and performance of this
                    Agreement by the Selling Stockholder and the
                    consummation by the Selling Stockholder of the
                    transactions contemplated hereby.

                    (ii) This Agreement has been duly authorized,
                    executed and delivered by or on behalf of the
                    Selling Stockholder.

                    (iii)     Immediately prior to the delivery of
                    certificates for the Shares by the Selling
                    Stockholder to the Underwriters, the Selling
                    Stockholder was the sole beneficial owner of the
                    Shares to be sold by the Selling Stockholder
                    under this Agreement, and such Shares were free
                    and clear of all liens in favor of the issuer
                    and any adverse claims.  Upon completion of the
                    sale of the Shares by the Selling Stockholder to
                    the Underwriters, assuming that each of the
                    several Underwriters has purchased such Shares
                    in good faith and without notice of any such
                    lien or adverse claim or any other adverse claim
                    within the meaning of the Uniform Commercial
                    Code, such Underwriters will have all acquired
                    all rights of the Selling Stockholder in such
                    Shares free of any adverse claim.

                    In rendering such opinions, such counsel may
               rely (A) as to matters involving the application of
               laws of any jurisdiction other than the Commonwealth
               of Massachusetts, the general corporation law of the
               State of Delaware, the federal law of the United
               States, to the extent such counsel deems proper and
               specified in such opinion, upon the opinion (which
               shall be dated the Closing Date, shall be
               satisfactory in form and substance to the
               Underwriter, shall be addressed to or shall expressly
               state that the Underwriter may rely upon such opinion
               as if it were addressed to them and shall be
               furnished to the Underwriter) of other counsel of
               good standing whom they believe to be reliable and
               who are satisfactory to counsel for the Underwriter,
               provided that such counsel shall further state that
               they believe that they and the Underwriter are
               justified in relying upon such opinion of other
               counsel, and (B) as to matters of fact, to the extent
               they deem proper, on representations of the Selling
               Stockholder contained herein and on certificates of
               the Selling Stockholder and public officials.

                    The opinions of such counsel described in this
               paragraph (d) above shall be rendered to you at the
               request of the Selling Stockholder and shall so state
               therein.

                    (e)  The Underwriters shall have received on the
               Closing Date an opinion, dated the Closing Date, of
               Holme Roberts & Owen LLC, counsel for the
               Underwriters, as to the matters referred to in
               clauses (v), (vi), (viii) (but only with respect to
               the statements under the caption "Underwriting") and
               (xviii) of the foregoing Section 10(c).  In giving
               such opinion with respect to the matters covered by
               clause (xviii)(2) such counsel may state that their
               opinion and belief are based upon their participation
               in the preparation of the Registration Statement and
               Prospectus and any amendments or supplements thereto
               and review and discussion of the contents thereof,
               but are without independent check or verification
               except as specified.

                    (f)  The Underwriters shall have received
               letters dated as of the date hereof and as of the
               Closing Date, in form and substance satisfactory to
               you, from Ernst & Young LLP, independent public
               accountants, with respect to the financial statements
               and certain financial information relating to the
               Company contained in the Registration Statement and
               the Prospectus.

                    (g)  The Underwriters shall have received
               letters dated as of the date hereof and as of the
               Closing Date, in form and substance satisfactory to
               you, from Ryder Scott, with respect to the oil and
               gas reserve information contained in the Registration
               Statement and the Prospectus.

                    (h)  The Underwriters shall have received from
               the Company and the Selling Stockholder the lock-up
               agreements specified in Section 2 hereof.

                    (i)  The Underwriters shall have received on the
               Closing Date a certificate, dated the Closing Date
               and signed by the Selling Stockholder, to the effect
               that the representations and warranties of the
               Selling Stockholder set forth in this Agreement are
               true and correct on and as of the Closing Date and
               that the Selling Stockholder has complied with all of
               the agreements and satisfied all of the conditions on
               its part to be performed or satisfied hereunder on or
               before the Closing Date.

                    (j)  At the date of this Agreement and at the
               Closing Date, the Company shall have furnished to the
               Underwriters a certificate of the Company, signed by
               the principal financial or accounting officer of the
               Company, in form and substance satisfactory to the
               Underwriters, to the effect that the signer of such
               certificate has performed (or members of his staff
               acting under his supervision have performed) certain
               specified procedures as a result of which such signer
               has determined that certain numerical and statistical
               information set forth in the Registration Statement
               and the Prospectus, and any supplements to the
               Prospectus (and not covered by the letter or letters
               delivered pursuant to Section 10(f) above) specified
               by the Underwriters, has been derived from, and
               agrees with, the records of the Company.

                    (k)  The Company and the Selling Stockholder
               shall not have failed at or before the Closing Date
               to perform or comply with any of the agreements
               herein contained and required to be performed or
               complied with by the Company and the Selling
               Stockholder at or before the Closing Date.

               The obligation of the Underwriters to purchase
          Additional Shares hereunder is subject to the satisfaction
          on and as of the Option Closing Date of the conditions set
          forth in this Section 10, except that, if the Option
          Closing Date is other than the Closing Date, the
          certificates, opinions and letters referred to in
          Section 10 shall be dated as of the Option Closing Date
          and the opinions called for by Sections 10(c), 10(d) and
          (e) shall be revised to reflect the sale of the Additional
          Shares.

               11.  Effective Date of Agreement and Termination. 
          This Agreement shall become effective upon the later of
          (i) execution of this Agreement and (ii) when notification
          of the effectiveness of the Registration Statement has
          been released by the Commission.

               This Agreement may be terminated at any time before
          the Closing Date by you by written notice to the Company
          if any of the following has occurred:  (i) since the
          respective dates as of which information is given in the
          Registration Statement and the Prospectus, any adverse
          change or development involving a prospective adverse
          change in the condition, financial or otherwise, of the
          Company or its subsidiary or the earnings, affairs, or
          business prospects of the Company or its subsidiary,
          whether or not arising in the ordinary course of business,
          which would, in your reasonable judgment, make it
          impracticable to market the Shares on the terms and in the
          manner contemplated in the Prospectus, (ii) any outbreak
          or escalation of hostilities or other national or
          international calamity or crisis or change in economic
          conditions or in the financial markets of the United
          States or elsewhere that, in your reasonable judgment, is
          material and adverse and would, in your reasonable
          judgment, make it impracticable to market the Shares on
          the terms and in the manner contemplated in the
          Prospectus, (iii) the suspension or material limitation of
          trading in securities on the New York Stock Exchange, the
          American Stock Exchange or the NASDAQ Stock Market
          National Market or limitation on prices for securities on
          any such exchange or the National Market System, (iv) the
          enactment, publication, decree or other promulgation of
          any federal or state statute, regulation, rule or order of
          any court or other governmental authority which in your
          reasonable opinion materially and adversely affects, or
          will materially and adversely affect, the business or
          operations of the Company or its subsidiary, (v) the
          declaration of a banking moratorium by either federal or
          New York authorities or (vi) the taking of any action by
          any federal, state or local government or agency in
          respect of its monetary or fiscal affairs which in your
          reasonable opinion has a material adverse effect on the
          financial markets in the United States.

               12.  Miscellaneous.  Notices given pursuant to any
          provision of this Agreement shall be addressed as follows; 
          (a) if to the Company, to Cairn Energy USA, Inc.
          8235 Douglas Avenue, Suite 1221, Dallas, Texas 75225,
          Attention:  Michael R. Gilbert, (b) if to the Selling
          Stockholder,  the Phemus Corporation, c/o John Halsted,
          Harvard Management Company, 600 Atlantic Avenue, Boston,
          Massachusetts  02203, with a copy to Larry Jordan Rowe,
          Ropes & Gray, One International Place, Boston,
          Massachusetts  02110, and (c) if to any Underwriter,
          S.G.Warburg & Co. Inc., Attention:  Syndicate Department,
          277 Park Avenue, New York, New York  10172, with a copy to
          Steven A. Cohen, Holme Roberts & Owen LLC, 1700 Lincoln
          Street, Suite 4100, Denver, Colorado  80203, or in any
          case to such other address as the person to be notified
          may have requested in writing.

               The respective indemnities, contribution agreements,
          representations, warranties and other statements of the
          Company, its officers and directors, the Selling
          Stockholders and of the Underwriters set forth in or made
          pursuant to this Agreement shall remain operative and in
          full force and effect, and will survive delivery of and
          payment of the Shares, regardless of (i) any
          investigation, or statement as to the results thereof made
          by or on behalf of the Underwriters or by or on behalf of
          the Company or the Selling Stockholder, the officers or
          directors of the Company or the Selling Stockholder or any
          controlling person of the Company or the Selling
          Stockholder, (ii) acceptance of the Shares and payment for
          them hereunder and (iii) termination of this Agreement.

               If this Agreement shall be terminated by the
          Underwriters because of any failure or refusal on the part
          of the Company or the Selling Stockholder to comply with
          the terms or to fulfill any of the conditions of this
          Agreement, the Company agrees to reimburse the
          Underwriters for all out-of-pocket expenses (including the
          fees and disbursements of counsel) reasonably incurred by
          them.

               Except as otherwise provided herein, this Agreement
          has been and is made solely for the benefit of and shall
          be binding upon the Company, the Selling Stockholder, the
          Underwriters, any controlling persons referred to herein
          and their respective successors and assigns, all as and to
          the extent providing in this Agreement, and no other
          person shall acquire or have any right under or by virtue
          of this Agreement.  The term "successors and assigns"
          shall not include a purchaser of any of the Shares from
          any of the several Underwriter merely because of such
          purchase.

               This Agreement shall be governed and construed in
          accordance with the laws of the State of New York.

               This Agreement may be signed in various counterparts
          which together shall constitute one and the same
          instrument.

          [SIGNATURE PAGE(S) FOLLOW]
<PAGE>
               Please confirm that the foregoing correctly sets
          forth the agreement between the Company and the Selling
          Stockholder and the Underwriters.

                                       Very truly yours,

                                       CAIRN ENERGY USA, INC.



                                       By: __________________________
                                            Name:
                                            Title:


                                       PHEMUS CORPORATION,
                                       the Selling Stockholder



                                       By: _________________________
                                            Name:
                                            Title:


                                       By: _________________________
                                            Name:
                                            Title:
<PAGE>
          The foregoing Agreement is hereby confirmed and accepted
          as of the date first above written.

          S.G.Warburg & Co. Inc.
          Howard, Weil, Labouisse, Friedrichs
            Incorporated
          Petrie Parkman & Co., Inc.

          Acting severally on behalf of themselves and the
          several Underwriters named in Schedule I hereto.

          S.G.WARBURG & CO. INC.


          By:_____________________________

























































                                                       EXHIBIT J


                                            PHEMUS CORPORATION
                                            600 Atlantic Avenue
                                            Boston, MA 02110


                                            September 19, 1995


S.G. Warburg & Co. Inc.
277 Park Avenue
New York, New York  10172

Howard, Weil, Labouisse,
  Friedrichs Incorporated
Energy Centre
1100 Poydras Street, Suite 900
New Orleans, Louisiana  70163

Petrie Parkman & Co., Inc.
475 Seventeenth Street, Suite 1100
Denver, Colorado  80202

     Re:  Agreement Not to Sell Stock

Dear Sirs:

     This letter is being delivered to you in connection with the proposed
Underwriting Agreement (the "Underwriting Agreement") among Cairn Energy USA,
Inc., a Delaware corporation (the "Company"), Phemus Corporation, a
Massachusetts membership corporation (the "Selling Stockholder"), and S.G.
Warburg & Co. Inc., Howard, Weil, Labouisse, Friederichs Incorporated and
Petrie Parkman & Co., Inc. (collectively, the "Underwriters"), relating to an
underwritten public offering of shares (the "Shares") of Common Stock, par
value $.01 per share (the "Common Stock"), of the Company.

     In order to induce you to enter into the Underwriting Agreement, and in
recognition of the benefits of the contemplated Common Stock offering to the
Company, the undersigned hereby covenants and agrees with the Underwriters, the
Company and the Selling Stockholder, and shall be deemed to represent and
warrant to the Underwriters on the date on which the Underwriting Agreement is
executed and on each date on which any Shares are sold under the Underwriting
Agreement, as follows:

          The undersigned will not, without the prior written consent of S.G.
     Warburg & Co. Inc. for a period of 180 days following the date of the
     prospectus first used to confirm sales of Shares (the "Prospectus") (x)
     directly or indirectly sell, offer or contract to sell, grant any option
     for the sale of, or otherwise dispose of or transfer, or announce any
     offering of the shares of Common Stock or any securities (debt or equity)
     convertible into or exchangeable or exercisable for Common Stock other
     than transfers to wholly-owned affiliates, or (y) cause to be filed any
     registration statement under the Securities Act of 1933, as amended, with
     respect to any of the foregoing.

     If for any reason the Underwriting Agreement shall be terminated prior to
the Closing Date (as defined in the Underwriting Agreement), the agreement set
forth above shall likewise be terminated.

                              Yours very truly,

                              PHEMUS CORPORATION



                              By _________________________
                                 Authorized Signatory



                              By _________________________
                                 Authorized Signatory





































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