Document:

EXHIBIT 4.2

                             SUBSCRIPTION AGREEMENT

                             ALGIERS RESOURCES, INC.
                              BALSTRON CORPORATION
                                 DALIPRINT, INC.
                              HARTSCUP CORPORATION
                              MAYALL PARTNERS, INC.
                               PSLRA, INCORPORATED
                            REGAL ACQUISITIONS, INC.
                               SPACIAL CORPORATION
                                 VOYER ONE, INC.
                                 VOYER TWO, INC.

Please read all instructions and the terms and conditions of your Confidential
Offering Memorandum dated ___________ __, 1998 carefully before filling out this
application. Furthermore, please review the Subscription Supplement and
Registration Rights Agreement (the "Subscription Supplement") which is attached
as Exhibit B to the Confidential Offering Memorandum and the terms of which are
incorporated by reference into and made a part of this application. Capitalized
terms used and not otherwise defined herein shall have the meanings set forth in
the Confidential Offering Memorandum. If you need assistance, please call your
registered representative.

[ ] When application is complete, deliver your investment to:

                                Algiers Resources, Inc.
                                Balstron Corporation
                                Daliprint, Inc.
                                Hartscup Corporation
                                Mayall Partners, Inc.
                                PSLRA, Incorporated
                                Regal Acquisitions, Inc.
                                Spacial Corporation
                                Voyer One, Inc.
                                Voyer Two, Inc.
                                c/o James A. Prestiano
                                The Law Office of James A. Prestiano, Esq.
                                317 Madison Avenue, Suite 2310
                                New York, NY 10017

[X] Make Separate Checks payable to each of Algiers Resources, Inc., Balstron
    Corporation, Daliprint, Inc., Hartscup Corporation, Mayall Partners, Inc.,
    PSLRA, Incorporated, Regal Acquisitions, Inc., Spacial Corporation, Voyer
    One, Inc., Voyer Two, Inc.

I.                      ACCOUNT REGISTRATION - Check One
=============================================================================

[ ] Individual Account   [ ] Joint Registration      [ ] Pension or Profit
                                                         Sharing

                         [ ] Joint Tenant with Right [ ] IRA
                             of Survivorship
                         [ ] Tenants in Common
                         [ ] Tenants by Entirety
                         [ ] Community Property

[ ] Corporation, Partnership,
    Trust, Association or Other
    Entity

---------------------------------------------------------------
Name of APPLICANT, CUSTODIAN, CORPORATION, TRUST or BENEFICIARY

                           M or F
                                     ----------------------------------------
                                     Date of Birth    Soc. Sec. or Tax ID #

---------------------------------------------------------------
Name of JOINT TENANT or TRUSTEE (if applicable)

  [ ]     PLEASE PUT A CHECK NEXT TO
          THE SOC. SEC. # OR TAX ID. #
          RESPONSIBLE FOR TAXES.  WE
          WILL REPORT THIS NUMBER TO
          THE IRS.

<PAGE>

                           M or F
                                     ----------------------------------------
                                     Date of Birth    Soc. Sec. or Tax ID #
  [ ]

---------------------------------------------------------------
Name of ADDITIONAL TRUSTEE (if applicable)

  [ ]     Date of Trust

                           M or F
                                     ----------------------------------------
                                     Date of Birth    Soc. Sec. or Tax ID #

Marital Status (please check one)
[ ] Single        [ ] Married         [ ] Separated           [ ] Divorced

$________________ Investment Amount            (Minimum Subscription of $5,000,
$________________ Per Company (divide by 10)   $500 per Company unless approved
                                               by the Companies.)

                                        2
<PAGE>

 I.                      ACCOUNT REGISTRATION - (continued)
=============================================================================

                                  HOME ADDRESS
-----------------------------------------------------------------------------
Street Address                                                    Unit Number

----------------------------------------------------      -------------------
City                                      State           ZIP+4

----------------------------------
Home Phone Number (with Area Code)

                                BUSINESS ADDRESS

-----------------------------------------------------------------------------
Name of Company

-----------------------------------------------------------------------------
Street Address                                                   Suite Number

----------------------------------------------------      -------------------
City                                      State           ZIP+4

--------------------------------------
Business Phone Number (with Area Code)

Please send all correspondence to:
__ Residence  __ Business  __ Other.   Please specify:_______________________

 II.                   ALTERNATIVE DISTRIBUTION INFORMATION
=============================================================================

To direct distributions to a party other than the registered owner, complete
the information below.

Name of Firm (Bank or Brokerage):
                                 --------------------------------------------
Account Name:
             ----------------------------------------------------------------
Account Number:
               --------------------------------------------------------------
Address:
        ---------------------------------------------------------------------
City, State ZIP:
                -------------------------------------------------------------

 III.                      SUBSCRIPTION AGREEMENT
=============================================================================

    You as an individual or you on behalf of the subscribing entity are being
asked to complete this Subscription Agreement so a determination can be made as
to whether or not you (it) are qualified to purchase Common Stock under
applicable federal and state securities laws.

    Your answers to the questions contained herein must be true and correct in
all respects, and a false representation by you may constitute a violation of
law for which a claim for damages may be made against you.

    Your answers will be kept strictly confidential; however, by signing this
Subscription Agreement, you will be authorizing the Companies to present a
completed copy of this Subscription Agreement to such parties as it may deem
appropriate in order to make certain that the offer and sale of the Common Stock
will not result in a violation of the Securities Act of 1933, as amended, or of
the securities laws of any state.

    This Subscription Agreement does not constitute an offer to sell or a
solicitation of an offer to buy the Common Stock, or any other security.

    All questions must be answered. If the appropriate answer is "None" or "Not
Applicable", please state so. Please print or type your answers to all questions
and attach additional sheets if necessary to complete your answers to any item.
Please initial any correction.

INDIVIDUAL SUBSCRIBERS:
If the Common Stock subscribed for is to be owned by more than one person, you
and the other co-subscriber must each complete a separate Subscription Agreement
(except if the co-subscriber is your spouse and Statement B or C of Part I under
Section IV below has been checked) and sign the Signature Page annexed hereto.
If your spouse is a co-subscriber, you must indicate his or her name and social
security number.

CORPORATIONS, PARTNERSHIPS, PENSION PLANS AND TRUSTS:
The information requested herein relates to the subscribing entity and not to
you personally (unless otherwise determined in the ACCREDITED INVESTOR STATUS
section).

                                       3
<PAGE>

 IV.                     ACCREDITED INVESTOR STATUS
=============================================================================

         IF YOU MEET ANY OF THE FOLLOWING TESTS, PLEASE CHECK THE APPROPRIATE
         SPACES BELOW.

I.  INDIVIDUAL ACCOUNTS
    I certify that I am an "accredited investor" because:

    A.   _______ I had an individual income of more than $200,000 in each of the
         two most recent calendar years, and I reasonably expect to have an
         individual income in excess of $200,000 in the current calendar year.
    B.   _______ My spouse and I had joint income in excess of $300,000 in each
         of the two most recent calendar years, and we reasonably expect to have
         a joint income in excess of $300,000 in the current calendar year.
    C.   _______ I have an individual net worth, or my spouse and I have a joint
         net worth, in excess of $1,000,000 (including home and personal
         property).

    For purposes of this Subscription Agreement, "individual income" means
"adjusted gross income" as reported for Federal income tax purposes, exclusive
of any income attributable to a spouse or to property owned by a spouse and
increased by the following amounts: (i) the amount of any interest income
received which is tax-exempt under Section 103 of the Internal Revenue Code of
1986, as amended (the "Code"), (ii) the amount of losses claimed as a limited
partner in a limited partnership (as reported on Schedule E of form 1040), (iii)
any deduction claimed for depletion under Section 611 et seq. of the Code and
(iv) any amount by which income from long-term capital gains has been reduced in
arriving at adjusted gross income pursuant to the provisions of Sections 1202 of
the Internal Revenue Code as it was in effect prior to enactment of the Tax
Reform Act of 1986.

    For purposes of this Subscription Agreement, "joint income" means, "adjusted
gross income," as reported for Federal income tax purposes, including any income
attributable to a spouse or to property owned by a spouse, and increased by the
following amounts: (i) the amount of any interest income received which is
tax-exempt under Section 103 of the Code, (ii) the amount of losses claimed as a
limited partner in a limited partnership (as reported on Schedule E of Form
1040), (iii) any deduction claimed for depletion under Section 611 et seq. of
the Code and (iv) any amount by which income from long-term capital gains has
been reduced in arriving at adjusted gross income pursuant to the provisions of
Section 1202 of the Internal Revenue Code as it was in effect prior to enactment
of the Tax Reform Act of 1986.

    For the purposes of this Subscription Agreement, "net worth" means (except
as otherwise specifically defined) the excess of total assets at fair market
value, including home and personal property, over total liabilities, including
mortgages and income taxes on unrealized appreciation of assets.

II. CORPORATIONS, PARTNERSHIPS, EMPLOYEE BENEFIT PLANS OR IRAS

    A.   Has the subscribing entity been formed for the specific purpose of
investing in the Common Stock?  [ ]  YES    [ ]  NO

If your answer to question A is "No" CHECK whichever of the following statements
(1-5) is applicable to the subscribing entity. If your answer to question A is
"Yes" the subscribing entity must be able to certify to statement (B) below in
order to qualify as an "accredited investor".

         The undersigned entity certifies that it is an "accredited investor"
because it is:

    1. _______ an employee benefit plan within the meaning of Title I of the
    Employee Retirement Income Security Act of 1974, provided that the
    investment decision is made by a plan fiduciary, as defined in section 3(21)
    of such Act, and the plan fiduciary is a bank, savings and loan association,
    insurance company or registered investment adviser; or

    2. _______ an employee benefit plan within the meaning of Title I of the
    Employee Retirement Income Security Act of 1974 that has total assets in
    excess of $5,000,000; or

    3. _______ each of its shareholders, partners, or beneficiaries meets at
    least one of the following conditions described above under INDIVIDUAL
    ACCOUNTS. Please also CHECK the appropriate space in that section; or (Note:
    Income Statement must be completed for each shareholder, partner or
    beneficiary)

    4. _______ a self directed employee benefit plan and the investment decision
    is made solely by a person that meets at least one of the conditions
    described above under INDIVIDUAL ACCOUNTS; or (Note: Income Statement must
    be completed for each such person)

    5. _______ a corporation or a Massachusetts or similar business trust or
    partnership with total assets in excess of $5,000,000.

B.  If the answer to Question A above is "Yes", please certify the statement
    below is true and correct: _______ The undersigned entity certifies that it
    is an accredited investor because each of its shareholders, partners or
    beneficiaries meets at least one of the conditions described above under
    INDIVIDUAL ACCOUNTS. Please also CHECK the appropriate space in that
    section.

III. TRUST ACCOUNTS

A.  Has the subscribing entity been formed for the specific purpose of investing
in the Common Stock?   [ ] YES    [ ]  NO

If your answer to question A is "No" CHECK whichever of the following statements
(1-3) is applicable to the subscribing entity. If your answer to question A is
"Yes" the subscribing entity must be able to certify to statement (3) below in
order to qualify as an "accredited investor".

         The undersigned trustee certifies that the trust is an "accredited
investor" because:

    _______1) the trust has total assets in excess of $5,000,000 and the
    investment decision has been made by a "sophisticated person" (i.e., a
    person who has such knowledge and experience in financial and business
    matters that he or she is capable of evaluating the merits and risks of an
    investment in the Common Stock); or

    _______2) the trustee making the investment decision on its behalf is a bank
    (as defined in Section 3(a)(2) of the Securities Act), a savings and loan
    association or other institution (as defined in Section 3(a)(5)(A) of the
    Securities Act), acting in its fiduciary capacity; or

    _______3) the grantor(s) of the trust may revoke the trust at any time and
    regain title to the trust assets and has (have) retained sole investment
    control over the assets of the trust and the (each) grantor(s) meets at
    least one of the conditions described above under INDIVIDUAL ACCOUNTS.
    Please also CHECK the appropriate space in that section.

    (Note:  For each grantor an Income Statement must be completed)

                                        4
<PAGE>

 V.          INCOME STATEMENT - (Round off to the nearest $5,000)
=============================================================================

Please specify the amount of your:
[ ] Individual [ ] Joint [ ] Trust [ ] Beneficiary [ ] Shareholder [ ] Partner

income (defined in page 2:  Accredited Investor Status) in calendar years 1996
and 1997 and your projected income for 1998.

         1996           $
         1997           $
         1998           $                         (projected)
                         ------------------------

Current occupation (position or title and duties):

Name of Business:
                 -------------------------------------
Name of Employer:                             Telephone number (   )    -
                 ----------------------------                 ---------------

Former employment (if current employment is less than five years):

Name of Employer:                     Position or Title:
                 ---------------------                  ---------------------

Nature of Duties:                       Period Employed:          to
                 ----------------------                 ---------    --------

 VI.                     INVESTMENT EXPERIENCE
=============================================================================

The following information is to be provided by the individual making the
investment decision or the person acting on behalf of the corporation,
partnership, individual retirement account, employee benefit plan or trust.

1.  Business or professional education (school, dates of attendance, degrees):

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

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

2.  Details of any training or experience in financial, business or tax matters
    not disclosed in Item 1 immediately above:

3.  Please indicate the frequency of your investment in marketable securities:
    [ ] Often       [ ] Occasionally       [ ] Seldom        [ ]  Never

4.  Please state the approximate number and total dollar amount of the following
    types of investments in which you have participated:
    a. restricted (non-traded) stock or notes:
              Number ___________________    Amount Invested:   $ _______________
    b. private placements of securities sold in reliance upon non-public
       offering exemption from registration under the Securities Act of 1933:
              Number ___________________    Amount Invested:   $ _______________

5.  Please initial the appropriate alternative:

_______ ALTERNATIVE ONE: I have such knowledge and experience in financial and
business matters and in private placement investments in particular that I am
capable of protecting my interests in connection with the purchase of the Common
Stock and evaluating the merits and risks of an investment in the Common Stock
and do not desire to use a professional advisor in connection with protecting my
interests and evaluating such merits and risks. I understand, however, that the
Company may request that I use a professional advisor.

_______ ALTERNATIVE TWO: I intend to use the services of a professional
advisor(s) in connection with protecting my interests in connection with the
purchase of the Common Stock and evaluating the merits and risks of an
investment in Common Stock and hereby appoint such person(s) to act as my
professional advisor(s) in connection with my proposed purchase of Common Stock.
(Please contact your registered representative for further instructions.)

Name of Professional Advisor If Alternative Two chosen:

                                        Telephone number (   )  -
---------------------------------------                   -----------

                                        5
<PAGE>

 VII.                       COVENANTS AND CERTIFICATIONS
=============================================================================

     1. I certify that the information contained herein above is complete and
accurate and may be relied on by the Companies. I will notify the Companies
promptly of any material change in any of such information.

     2. Under penalties of perjury, I certify that (1) my taxpayer
identification number shown in this Subscription Agreement is correct and (2) I
am not subject to backup withholding because (a) I have not been notified that I
am subject to backup withholding as a result of a failure to report all interest
and dividends or (b) the Internal Revenue Service has notified me that I am no
longer subject to backup withholding. (If you have been notified that you are
subject to backup withholding and the Internal Revenue Service has not advised
you that backup withholding has been terminated, strike out item (2).) BY
SIGNING, I ACKNOWLEDGE THAT I HAVE CAREFULLY REVIEWED THE CONFIDENTIAL OFFERING
MEMORANDUM REFERRED TO ABOVE, ESPECIALLY THE SECTIONS ENTITLED "RISK FACTORS"
AND "AVAILABLE INFORMATION," AND THE SUBSCRIPTION SUPPLEMENT, LOCKUP AND
REGISTRATION RIGHTS AGREEMENT AND AGREE TO BOUND BY THE TERMS OF THIS
SUBSCRIPTION AGREEMENT AND THE SUBSCRIPTION SUPPLEMENT, LOCKUP AND REGISTRATION
RIGHTS AGREEMENT.

     3. I certify that I am purchasing the Common Stock solely for my own
account, not as a nominee or agent, and not for the beneficial interest of any
other person or with a view to or for resale in connection with any distribution
of the Common Stock or any grant of participations therein.

     4. I certify that I am able to bear the economic risk of my investment in
the Common Stock, have adequate means of providing for my current needs and
possible contingencies, and have no need for liquidity of my investment.

     5. I have had a full and complete opportunity to (i) ask questions of, and
receive answers from, the Companies' executive officer concerning the terms and
conditions of this offering, (ii) inspect all material contracts and documents
relating to this offering to which the Companies have access and (iii) obtain
any additional information which the Companies possess or can acquire without
unreasonable effort or expense that is necessary to verify the accuracy of the
information contained in the Confidential Offering Memorandum.

     6. I agree to indemnify the Companies, [Placement Agent?] and their
officers, directors and agents against all loss, liability, costs and expenses
(including reasonable attorneys' fees) arising as a result of any
misrepresentation made by me in this Subscription Agreement, my breach of this
Subscription Agreement or my transfer of the Securities in violation of federal
and/or state securities laws.

     7. I agree that the representations, certifications and agreements set
forth in this Subscription Agreement shall survive the purchase and delivery of
the Common Stock.

    8.  Any disputes or controversies which may arise between the undersigned
and the Companies concerning this subscription or the Offering shall be
submitted to arbitration in accordance with the Rules of the American
Arbitration Association. Notwithstanding the foregoing, if either the Companies
or the undersigned is a party to a pending arbitration proceeding under the Code
of Arbitration Procedure of the National Association of Securities Dealers, Inc.
("NASD") arising as a result of the Offering or the Common Stock, the
undersigned agrees to consolidate his action with the pending arbitration, to
the extent that the NASD accepts jurisdiction of such action. Arbitration must
be commenced by service upon the Companies of a written demand for arbitration
or a written notice of intention to arbitrate. Judgment upon any award rendered
by the arbitrator(s) shall be final, and may be entered in any court having
jurisdiction. Any arbitration proceeding pursuant to this Agreement shall be
determined pursuant to the laws of the State of New York and the Rules of the
American Arbitration Association or the Code of Arbitration Procedure of the
NASD, as applicable. The undersigned hereby submits to the in personam
jurisdiction of the courts of the State of New York and the federal courts
located therein (and expressly waives any defense to personal jurisdiction of
the undersigned by such courts) for the purpose of confirming, vacating or
modifying any such award or judgment entered thereon. To the extent any
controversy as above described is to be resolved in a court action, the
undersigned expressly agrees that such action shall be brought only in the
Courts of the State of New York, in the City of New York, or the federal courts
located therein and service of process in such action shall be sufficient if
served upon the undersigned by certified mail, return receipt requested, at the
undersigned's last address known to the Companies. The undersigned acknowledges
that, by agreeing to arbitrate any disputes or controversies under this
Agreement, the undersigned is waiving the right to seek remedies in court,
including the right to a jury trial. In addition, the undersigned is aware that:
(i) arbitration is final and binding on the parties; (ii) pre-arbitration
discovery is generally more limited than and different from court proceedings;
(iii) the arbitrators' award is not required to include factual findings or
legal reasoning and any party's right to appear or to seek modification of
rulings by the arbitrators is strictly limited; and (iv) the panel of
arbitrators in a proceeding under the NASD Code of Arbitration will typically
include a minority of arbitrators who were or are affiliated with the securities
industry.

                  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .

 VIII.                            SIGNATURES
=============================================================================
The Subscription Agreement and the Subscription Supplement, Lockup and
Registration Rights Agreement contain various agreements, certifications and
representations by subscribers and should be carefully reviewed in their
entirety before executing this signature page.

BY SIGNING, I ACKNOWLEDGE THAT I HAVE CAREFULLY REVIEWED THE CONFIDENTIAL
OFFERING MEMORANDUM REFERRED TO ABOVE, ESPECIALLY THE SECTIONS ENTITLED "RISK
FACTORS" AND "AVAILABLE INFORMATION," AND THE SUBSCRIPTION SUPPLEMENT, LOCKUP
AND REGISTRATION RIGHTS AGREEMENT AND AGREE TO BOUND BY THE TERMS OF THIS
SUBSCRIPTION AGREEMENT AND THE SUBSCRIPTION SUPPLEMENT, LOCKUP AND REGISTRATION
RIGHTS AGREEMENT, THE TERMS OF WHICH ARE INCORPORATED HEREIN.

THE UNDERSIGNED ACKNOWLEDGES AND AGREES TO ARBITRATE ANY DISPUTE OR CONTROVERSY
ARISING AS A RESULT OF THIS SUBSCRIPTION AGREEMENT, THE OFFERING OR ANY
CONTROVERSY OR DISPUTE RELATED TO THE COMMON STOCK ISSUED IN THIS OFFERING, IN
ACCORDANCE WITH PARAGRAPH 8 OF SECTION VII HEREOF.

Dated                    ,  1998
      -------------------

Print name of individual subscriber,       Signature of individual subscriber,
custodian, corporation, trustee            authorized person, trustee

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

Print name of co-subscriber,               Signature of co-subscriber,
authorized person, co-trustee if           authorized person, co-trustee if
required by trust instrument               required by trust instrument

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

Investment Authorization. The undersigned corporation, partnership, benefit plan
or IRA has all requisite authority to acquire the Common Stock hereby subscribed
for and to enter into the Subscription Agreement and further, the undersigned
officer, partner or fiduciary of the subscribing entity has been duly authorized
by all requisite action on the part of such entity to execute these documents on
its behalf. Such authorization has not been revoked and is still in full force
and effect.

Check Box:      [ ] Yes         [ ]  No         [ ]  Not Applicable

                                        6
<PAGE>

 IX.                               NOTARIZATION
=============================================================================

STATE OF                     )
                             )    ss.
COUNTY OF                    )

        On              , 199   , before me,             , personally appeared
           --------------    ---             ------------
                                                                             ,
-----------------------------------------------------------------------------

        [ ] personally known to me    [ ] proved to me on the basis of
                                          satisfactory evidence
to be the person(s) whose name(s) is/are subscribed to the within instrument and
acknowledged to me that he/she/they executed the same in his/her/their
authorized capacity(ies), and that by his/her/their signature(s) on the
instrument the person(s), or the entity upon behalf of which the person(s)
acted, executed the instrument.

        WITNESS my hand and official seal.

                                                    ---------------------------
                                                    Signature of Notary

                           CAPACITY CLAIMED BY SIGNER:

        [ ] Individual(s)                       [ ]  Attorney-In-Fact
        [ ] Partner(s)                          [ ]  Subscribing Witness
        [ ] Trustee(s)                          [ ]  Guardian/Conservator
        [ ] Corporate                           [ ]  Other:
                      ------------------------             --------------------
            Officer(s)------------------------       --------------------------
                               Title(s)

                             SIGNER IS REPRESENTING:
Name of Person(s) or Entity(ies):
                                 ----------------------------------------------
-------------------------------------------------------------------------------

Notary:  Please fill in state, county, date and names of all persons signing and
affix notarial seal.

 X.                  VERIFICATION OF ACCOUNT EXECUTIVE
=============================================================================

    I state that I am familiar with the financial affairs and investment
objectives of the investor named above and reasonably believe that a purchase of
the Common Stock is a suitable investment for this investor and that the
investor, either individually or together with his or her professional advisor,
understands the terms of and is able to evaluate the merits of this offering. I
acknowledge:
    (a)  that I have reviewed this Subscription Agreement and the Subscription
         Supplement attached as Exhibit B to the Confidential Offering
         Memorandum, and attachments (if any) thereto; and
    (b)  that the Subscription Agreement and attachments thereto have been fully
         completed and executed by the appropriate party.

Broker/Dealer                                 Account Executive

------------------------------------          --------------------------------
(Name of Broker/Dealer)                       (Signature)

-----------------------------------           --------------------------------
(Street Address of AE Office)                 (Print Name)

-----------------------------------           --------------------------------
(City of AE Office)  (State)  (Zip)           (Representative I.D. Number)

(   )     -
 ---  ---- ----                               --------------------------------
(Telephone Number of AE Office)               (Date)

                                        7<PAGE>

                                                                  EXHIBIT 10.31
                                                                  -------------

                                PROMISSORY NOTE
                                ---------------

$206,000.00                                                      March 13, 2000

     FOR VALUE RECEIVED, the undersigned, Daniel R. Omstead ("Maker"), hereby
promises to pay to the order of Reprogenesis, Inc., a Texas corporation
("Payee"), the principal sum of $206,000 upon the earlier of receipt of any
payment by Maker pursuant to the Daniel Omstead Severance Agreement dated
February 14, 2000 between Maker and Payee or December 31, 2000, without
interest.

     Maker may from time to time prepay all or any portion of the outstanding
balance of this note on any Business Day without penalty or premium.  As used
herein, a "Business Day" shall mean any day other than a Saturday, Sunday or
other day on which banks in Texas are permitted or required by law to be closed.
All payments and prepayments made in accordance with this note in respect of
principal on this note are to be made in lawful money of the United States of
America no later than 12 o'clock noon, central time, in same day funds, at 21
Erie Street, Suite 22, Cambridge, Massachusetts 02139, or such other place as
the holder hereof shall designate in writing to Maker.  Maker shall have no
right to reborrow under this note any amounts paid or prepaid in respect of
principal on this note.

     If any payment or prepayment of principal on this note shall become due on
a day which is not a Business Day, such payment shall be made on the next
succeeding Business Day.

     In addition to all principal on this note, Maker agrees to pay (a) all
reasonable costs and expenses incurred by all owners and holders of this note in
collecting this note through any probate, reorganization, bankruptcy or any
other proceeding and (b) reasonable attorneys' fees when and if this note is
placed in the hands of an attorney for collection after demand.

     Maker and any and all endorsers, guarantors and sureties severally waive
grace, presentment for payment, notice of dishonor, notice of intent to
accelerate, notice of acceleration, protest and notice of protest and diligence
in collecting and bringing of suit against any party hereto, and agree to all
modifications, renewals, extensions, substitutions or replacements hereof or
partial payments hereon and to any release or substitution of security, if any,
hereof, in whole or in part, with or without notice, before or after maturity.
This note may be transferred by Payee, and the rights and privileges of Payee
under this note shall inure to the benefit of Payee's representatives,
successors and assigns.

     Maker hereby expressly waives presentment, demand, protest or other notice
of any kind to Maker.
<PAGE>

     THIS NOTE SHALL BE DEEMED TO BE A CONTRACT UNDER THE LAWS OF THE STATE OF
TEXAS AND FOR ALL PURPOSES SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH
THE LAWS OF SAID STATE AND APPLICABLE FEDERAL LAWS.  Maker further agrees that
the consideration furnished to Maker is related solely to business, commercial,
investment or other similar purposes and not personal, family or agricultural
purposes.

     THIS WRITTEN AGREEMENT REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES
AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT
ORAL AGREEMENTS OF THE PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN
THE PARTIES.

                                             -------------------------
                                             Daniel R. Omstead

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