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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                        Under the Securities Act of 1934
                               (Amendment No. 15)*



                             BERKSHIRE BANCORP INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                          COMMON STOCK, $.10 PAR VALUE
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                   084597-10-3
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                                Emanuel J. Adler
                                 Blank Rome LLP
                              405 Lexington Avenue
                            New York, New York 10174
                                 (212) 885-5000
--------------------------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to receive Notice and Communications)


                                November 2, 2006
--------------------------------------------------------------------------------
             (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 THAT IS THE SUBJECT OF THIS SCHEDULE 13D, AND IS FILING THIS
SCHEDULE BECAUSE OF SS.SS.240.13D-1(E), 240.13D-1(F) OR 240.13D-1(G), CHECK THE
FOLLOWING BOX |_|.

NOTE: SCHEDULES FILED IN PAPER FORMAT SHALL INCLUDE A SIGNED ORIGINAL AND FIVE
COPIES OF THE SCHEDULE, INCLUDING ALL EXHIBITS. SEE SS.240.13D-7 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).



PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS
FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALID OMB
CONTROL NUMBER.

SEC 1746 (11-03)



                                Page 1 of 6 Pages


CUSIP NO. 084597-10-3

--------------------------------------------------------------------------------
1.    NAMES OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
      (ENTITIES ONLY).

      MOSES MARX
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                                         (A) |X|
                                                                         (B) |_|
--------------------------------------------------------------------------------
3.    SEC USE ONLY

--------------------------------------------------------------------------------
4.    SOURCE OF FUNDS (SEE INSTRUCTIONS)

      N/A
--------------------------------------------------------------------------------
5.    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(D) or 2(E)
                                                                             |_|
--------------------------------------------------------------------------------
6.    CITIZENSHIP OR PLACE OF ORGANIZATION

      UNITED STATES
--------------------------------------------------------------------------------
NUMBER OF      7.    SOLE VOTING POWER
SHARES
BENEFICIALLY         3,474,413 (includes options to purchase 3,000 shares of
OWNED BY             Common Stock)
EACH           -----------------------------------------------------------------
REPORTING      8.    SHARED VOTING POWER
PERSON
WITH                 -0-
               -----------------------------------------------------------------
               9.    SOLE DISPOSITIVE POWER

                     3,474,413 (includes options to purchase 3,000 shares of
                     Common Stock)
               -----------------------------------------------------------------
               10.   SHARED DISPOSITIVE POWER

                     -0-
--------------------------------------------------------------------------------
11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      3,474,413 (includes options to purchase 3,000 shares of Common Stock)
--------------------------------------------------------------------------------
12.   CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
      (SEE INSTRUCTIONS)
                                                                             |X|
--------------------------------------------------------------------------------
13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

      50.3%
--------------------------------------------------------------------------------
14.   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

      IN
--------------------------------------------------------------------------------


                               Page 2 of 6 Pages


CUSIP NO. 084597-10-3

--------------------------------------------------------------------------------
1.    NAMES OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
      (ENTITIES ONLY).

      MOMAR CORPORATION
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                                         (A) |X|
                                                                         (B) |_|
--------------------------------------------------------------------------------
3.    SEC USE ONLY

--------------------------------------------------------------------------------
4.    SOURCE OF FUNDS (SEE INSTRUCTIONS)

      N/A
--------------------------------------------------------------------------------
5.    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(D) or 2(E)
                                                                             |_|
--------------------------------------------------------------------------------
6.    CITIZENSHIP OR PLACE OF ORGANIZATION

      MARYLAND
--------------------------------------------------------------------------------
NUMBER OF      7.    SOLE VOTING POWER
SHARES
BENEFICIALLY         285,000
OWNED BY       -----------------------------------------------------------------
EACH           8.    SHARED VOTING POWER
REPORTING
PERSON               -0-
WITH           -----------------------------------------------------------------
               9.    SOLE DISPOSITIVE POWER

                     285,000
               -----------------------------------------------------------------
               10.   SHARED DISPOSITIVE POWER

                     -0-
--------------------------------------------------------------------------------
11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      285,000
--------------------------------------------------------------------------------
12.   CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
      (SEE INSTRUCTIONS)
                                                                             |_|
--------------------------------------------------------------------------------
13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

      4.1%
--------------------------------------------------------------------------------
14.   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

      CO
--------------------------------------------------------------------------------


                               Page 3 of 6 Pages


CUSIP NO. 084597-10-3

--------------------------------------------------------------------------------
1.    NAMES OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
      (ENTITIES ONLY).

      TERUMAH FOUNDATION, INC.
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                                         (A) |X|
                                                                         (B) |_|
--------------------------------------------------------------------------------
3.    SEC USE ONLY

--------------------------------------------------------------------------------
4.    SOURCE OF FUNDS (SEE INSTRUCTIONS)

      N/A
--------------------------------------------------------------------------------
5.    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(D) or 2(E)
                                                                             |_|
--------------------------------------------------------------------------------
6.    CITIZENSHIP OR PLACE OF ORGANIZATION

      NEW YORK
--------------------------------------------------------------------------------
NUMBER OF      7.    SOLE VOTING POWER
SHARES
BENEFICIALLY         441,163
OWNED BY       -----------------------------------------------------------------
EACH           8.    SHARED VOTING POWER
REPORTING
PERSON               -0-
WITH           -----------------------------------------------------------------
               9.    SOLE DISPOSITIVE POWER

                     441,163
               -----------------------------------------------------------------
               10.   SHARED DISPOSITIVE POWER

                     -0-
--------------------------------------------------------------------------------
11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      441,163
--------------------------------------------------------------------------------
12.   CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
      (SEE INSTRUCTIONS)
                                                                             |_|
--------------------------------------------------------------------------------
13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

      6.4%
--------------------------------------------------------------------------------
14.   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

      CO
--------------------------------------------------------------------------------


                               Page 4 of 6 Pages


Item 2.  Identity and Background.

         (a) This Amendment No. 15 amends and  supplements  the Schedule 13D, as
         amended and  supplemented  by Amendments  Nos. 1 through 14,  inclusive
         (the  "Schedule  13D"),  of  Moses  Marx,  an  individual,   and  Momar
         Corporation,  a Maryland  corporation  ("Momar"),  with  respect to the
         Common  Stock,  $.10 par value  ("Common  Stock") of Berkshire  Bancorp
         Inc., a Delaware corporation (the "Company"),  formerly known as Cooper
         Life Sciences,  Inc. Except as amended hereby, there has been no change
         in the  information  contained  in the Schedule  13D.  Pursuant to Rule
         13d-1(f)(1)  promulgated under the Securities  Exchange Act of 1934, as
         amended (the "Exchange  Act"),  this Schedule 13D is being filed by Mr.
         Marx,  Momar and Terumah  Foundation,  Inc., a New York  not-for-profit
         corporation (the "Foundation"). The individual and entities hereinabove
         set forth  (collectively,  the  "Reporting  Persons")  are making  this
         single, joint filing because they may be deemed to constitute a "group"
         within  the  meaning  of  Section   13d(d)(3)  of  the  Exchange   Act.
         Information regarding Mr. Marx, Momar and the Foundation in response to
         Item 2 of Schedule 13D has been  previously  submitted in prior filings
         of this Schedule 13D.

Item 5.  Interest in Securities of the Issuer.

         (a) - (b)

         According to the Company's Quarterly Report on Form 10-Q for the period
         ended September 30, 2006,  there were 6,898,556  shares of Common Stock
         outstanding on November 1, 2006.

         As of the date of this Amendment No. 15, Moses Marx beneficially  owned
         3,474,413  shares of Common Stock,  representing  50.3%  (calculated in
         accordance  with the  instructions  to Schedule  13D) of the issued and
         outstanding  shares of the Common Stock. Said securities consist of (i)
         2,745,250  shares owned directly by Mr. Marx; (ii) 285,000 shares owned
         of record by Momar Corporation ("Momar"); (iii) 441,163 shares owned of
         record by the Foundation;  and (iv) options to purchase 3,000 shares of
         Common Stock.  With respect to the shares described in clauses (ii) and
         (iii),  Mr. Marx may be deemed to be a beneficial  owner of such shares
         by virtue of his being the only person (in the case of the  Foundation,
         by voting together with his wife,  Marga Marx, who together  constitute
         six of the ten  votes  on the  Foundation's  Board of  Directors)  in a
         position to determine the investment and voting  decisions of Momar and
         the Foundation, respectively, with respect to such shares.

         The foregoing  does not include any of the 162,184  shares owned by Eva
         and Esther,  L.P.,  of which Mr. Marx has a 23.0%  limited  partnership
         interest and of which Mr. Marx's  daughters and their  husbands are the
         general partners.

         (c) On November  2, 2006,  the  Foundation  donated  100,000  shares of
         Common  Stock to a  charitable  organization.  Other  than as  reported
         herein, the Reporting Persons effected no transactions in the shares of
         Common Stock of the Company during the last 60 days.

         (d) Each of the Reporting Persons affirms that no person other than the
         Reporting Persons has the right to receive,  or the power to direct the
         receipt of dividends from, or the proceeds from the sale of, the Common
         Stock owned by the Reporting Persons.

         (e) It is  inapplicable  for the  purposes  hereof to state the date on
         which the Reporting  Persons  ceased to be the owners of more than five
         percent of the Common Stock.


                                Page 5 of 6 Pages




                                    SIGNATURE


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

Date: November 9, 2006


                                                   /s/ Moses Marx
                                                   -----------------------------
                                                   MOSES MARX


                                                   MOMAR CORPORATION


                                                   By: /s/ Moses Marx
                                                       -------------------------
                                                       Name:  Moses Marx
                                                       Title: President

                                                   TERUMAH FOUNDATION, INC.


                                                   By: /s/ Philippe D. Katz
                                                       -------------------------
                                                       Name:  Philippe D. Katz
                                                       Title: Secretary

                                Page 6 of 6 Pages