UNITRODE CORP
SC 13D, 1999-09-09
SEMICONDUCTORS & RELATED DEVICES
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<PAGE>

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                                                         OMB APPROVAL
                                                --------------------------------
                                                  OMB Number: 3235-0145
                                                  Expires: Aug. 31, 1999
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                                                  hours per response . . . 14.90
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                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                  SCHEDULE 13D
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
            TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                  RULE 13d-2(a)

                           (Amendment No. _________)1

                              Unitrode Corporation
                                (Name of Issuer)

                          Common Stock, par value $0.01
                         (Title of Class of Securities)

                                    913283107
                                 (CUSIP Number)

                                 Mark C. Wehrly
                       Farallon Capital Management, L.L.C.
                         One Maritime Plaza, Suite 1325
                         San Francisco, California 94111
                                 (415) 421-2132
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 August 31, 1999
             (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 Rule  13d-1(e),  13d-1(f)  or  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 Rule 13d-7(b)
     for other parties to whom copies are to be sent.

                         (Continued on following pages)
                               Page 1 of 41 Pages
                         Exhibit Index Found on Page 40

- ----------------------
     1 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 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>


                                       13D
===============================
CUSIP No. 913283107
===============================
- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Farallon Capital Partners, L.P.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however, is a beneficial
            owner only of the securities reported by it on this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         WC, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]

- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         California
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           464,600
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      464,600
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         464,600
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         1.4%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         PN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 2 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Farallon Capital Institutional Partners, L.P.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however, is a beneficial
            owner only of the securities reported by it on this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         WC
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         California
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           358,500
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      358,500
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         358,500
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         1.1%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         PN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 3 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Farallon Capital Institutional Partners II, L.P.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however, is a beneficial
            owner only of the securities reported by it on this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         WC
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         California
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           87,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      87,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         87,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         0.3%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         PN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 4 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Farallon Capital Institutional Partners III, L.P.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however, is a beneficial
            owner only of the securities reported by it on this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         WC
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           105,300
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      105,300
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         105,300
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         0.3%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         PN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 5 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Tinicum Partners, L.P.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however, is a beneficial
            owner only of the securities reported by it on this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         WC, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         New York
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           28,000
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      28,000
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         28,000
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         0.1%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         PN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 6 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Farallon Capital (CP) Investors, L.P.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however, is a beneficial
            owner only of the securities reported by it on this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         WC, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Cayman Islands
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           28,700
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      28,700
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         28,700
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         0.1%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         PN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 7 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Farallon Capital Management, L.L.C.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           761,900
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      761,900
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         761,900
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         2.4%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IA, OO
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 8 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Farallon Partners, L.L.C.
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,072,300
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,072,300
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,072,300
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         3.3%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         OO
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 9 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Enrique H. Boilini
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         Argentina
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 10 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         David I. Cohen
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         South Africa
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 11 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Joseph F. Downes
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 12 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         William F. Duhamel
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 13 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Fleur E. Fairman
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,072,300
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,072,300
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,072,300
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]

- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         3.3%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 14 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Jason M. Fish
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 15 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Andrew B. Fremder
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 16 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Richard B. Fried
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 17 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         William F. Mellin
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 18 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Stephen L. Millham
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 19 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Meridee A. Moore
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 20 of 41 Pages
<PAGE>


                                       13D
===============================
CUSIP No. 913283107
===============================

- ---------======================================================================
   1     NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         Thomas F. Steyer
- ---------======================================================================
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) [   ]

                                                                    (b) [ X ]**
         ** The reporting  persons  making this filing hold an aggregate  of
            1,834,200 Shares, which  is  5.7%  of  the  class  of securities.
            The reporting person on this cover page, however,  may be
            deemed  a beneficial owner only of the securities reported by it on
            this cover page.
- ---------======================================================================
   3     SEC USE ONLY

- ---------======================================================================
   4     SOURCE OF FUNDS*

         AF, OO
- ---------======================================================================
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEM 2(d) OR 2(e)
                                                                        [   ]
- ---------======================================================================
   6     CITIZENSHIP OR PLACE OF ORGANIZATION
         United States
- ----------------------=========================================================
   NUMBER OF      7   SOLE VOTING POWER

    SHARES            -0-
                ------=========================================================
 BENEFICIALLY     8   SHARED VOTING POWER

   OWNED BY           1,834,200
                ------=========================================================
     EACH         9   SOLE DISPOSITIVE POWER

   REPORTING          -0-
                ------=========================================================
  PERSON WITH    10   SHARED DISPOSITIVE POWER

                      1,834,200
- ----------------------=========================================================
   11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,834,200
- ---------======================================================================
   12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*
                                                                        [   ]
- ---------======================================================================
   13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.7%
- ---------======================================================================
   14    TYPE OF REPORTING PERSON*

         IN
- ---------======================================================================
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                              Page 21 of 41 Pages
<PAGE>


Item 1.  Security And Issuer.

     This  statement  relates to shares of Common  Stock,  par value  $0.01 (the
"Shares") of Unitrode  Corporation  (the  "Company").  The  Company's  principal
offices are located at 7 Continental Boulevard, Merrimack, New Hampshire, 03054.

Item 2. Identity And Background.

     (a) This statement is filed by the entities and persons  listed below,  all
of whom together are referred to herein as the "Reporting Persons."

     The Partnerships

            (i)   Farallon  Capital   Partners,   L.P.,  a  California   limited
                  partnership ("FCP"), with respect to the Shares held by it;

            (ii)  Farallon Capital  Institutional  Partners,  L.P., a California
                  limited partnership ("FCIP"),  with respect to the Shares held
                  by it;

            (iii) Farallon Capital Institutional Partners II, L.P., a California
                  limited  partnership  ("FCIP II"),  with respect to the Shares
                  held by it;

            (iv)  Farallon Capital Institutional  Partners III, L.P., a Delaware
                  limited  partnership  ("FCIP III"), with respect to the Shares
                  held by it;

             (v)  Tinicum  Partners,   L.P.,  a  New  York  limited  partnership
                  ("Tinicum"), with respect to the Shares held by it; and

            (vi)  Farallon  Capital  (CP)  Investors,  L.P.,  a  Cayman  Islands
                  limited  partnership  ("FCCP") with respect to the Shares held
                  by it.

     FCP,  FCIP,  FCIP II, FCIP III,  Tinicum and FCCP are together  referred to
herein as the "Partnerships."

     The Management Company

            (vii) Farallon  Capital  Management,   L.L.C.,  a  Delaware  limited
                  liability company (the "Management Company"),  with respect to
                  the Shares held by certain  accounts managed by the Management
                  Company (the "Managed Accounts")2.


- --------------------
    2 Of the Shares reported by the Management  Company on behalf of the Managed
Accounts,
                                                                  (continued...)


                              Page 22 of 41 Pages
<PAGE>

     The General Partner Of The Partnerships

            (viii)Farallon  Partners,   L.L.C.,  a  Delaware  limited  liability
                  company   which  is  the  general   partner  of  each  of  the
                  Partnerships  (the  "General  Partner"),  with  respect to the
                  Shares held by each of the Partnerships.

     The Managing Members Of The General Partner And The Management Company

            (ix)  The  following  eleven  persons  who are  managing  members of
                  both the General  Partner and  the  Management  Company,  with
                  respect  to  the  Shares  held  by  the  Partnerships  and the
                  Managed  Accounts:  Enrique  H. Boilini ("Boilini"),  David I.
                  Cohen  ("Cohen"),  Joseph  F. Downes  ("Downes"),  William  F.
                  Duhamel  ("Duhamel"),  Jason  M.  Fish   ("Fish"),  Andrew  B.
                  Fremder  ("Fremder"),  Richard  B. Fried ("Fried"), William F.
                  Mellin ("Mellin"),  Stephen  L. Millham  ("Millham"),  Meridee
                  A. Moore ("Moore") and  Thomas F. Steyer ("Steyer"); and

            (x)   the twelfth managing member of the General  Partner,  Fleur E.
                  Fairman  ("Fairman"),  with  respect to the Shares held by the
                  Partnerships.

     Boilini,  Cohen, Downes,  Duhamel,  Fairman, Fish, Fremder,  Fried, Mellin,
Millham,  Moore,  Steyer  are  together  referred  to herein as the  "Individual
Reporting Persons."

     (b) The address of the principal  business and principal office of (i) FCCP
is c/o W.S.  Walker & Company,  P.O. Box 265 GT,  Walker  House,  Grand  Cayman,
Cayman Islands and c/o Farallon  Partners,  L.L.C.,  One Maritime  Plaza,  Suite
1325, San Francisco,  California 94111, (ii) the other Partnerships, the General
Partner and the  Management  Company is One  Maritime  Plaza,  Suite  1325,  San
Francisco,  California 94111 and (iii) each of the Individual  Reporting Persons
is set forth in Annex 1 hereto.

     (c) The principal business of each of the Partnerships is that of a private
investment  fund  engaging in the purchase and sale of  investments  for its own
account.  The principal business of the General Partner is to act as the general
partner of the Partnerships. The principal business


- --------------------
     2(...continued)
16,200  Shares  (equal  to  approximately  0.05% of the total  Shares  currently
outstanding)  are  held by The  Absolute  Return  Fund  of The  Common  Fund,  a
non-profit  corporation whose principal address is 450 Post Road East, Westport,
Connecticut 06881.


                              Page 23 of 41 Pages
<PAGE>

of the  Management  Company  is that of a  registered  investment  adviser.  The
principal  business of each of the Individual  Reporting Persons is set forth in
Annex 1 hereto.

     (d) None of the Partnerships,  the Management Company,  the General Partner
or any of the Individual Reporting Persons has, during the last five years, been
convicted in a criminal  proceeding  (excluding  traffic  violations  or similar
misdemeanors).

     (e) None of the Partnerships,  the Management Company,  the General Partner
or any of the Individual Reporting Persons has, during the last five years, been
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.

     (f) The  citizenship of each of the  Partnerships,  the General Partner and
the  Management  Company is set forth above.  Each of the  Individual  Reporting
Persons is a United  States  citizen other than (i) Enrique H. Boilini who is an
Argentinean citizen and (ii) David I. Cohen who is a South African citizen.

     The other  information  required  by Item 2 relating  to the  identity  and
background of the Reporting Persons is set forth in Annex 1 hereto.

Item 3.  Source And Amount Of Funds And Other Consideration.

     The net investment cost (including commissions) for the Shares held by each
of the Partnerships and Managed Accounts is set forth below:

      Entity         Shares Held          Approximate Net Investment Cost
      ------------   -----------          -------------------------------
      FCP             464,600               $17,435,265.46
      FCIP            358,500               $13,451,559.52
      FCIP II          87,200                $3,266,913.79
      FCIP III        105,300                $3,876,616.53
      Tinicum          28,000                $1,052,766.67


                              Page 24 of 41 Pages
<PAGE>

      FCCP             28,700                $1,049,752.86
      Managed
        Accounts      761,900               $28,790,770.71

     The consideration  for such acquisitions was obtained as follows:  (i) with
respect to FCIP, FCIP II and FCIP III, from working  capital;  (ii) with respect
to FCP, Tinicum and FCCP, from working capital,  and/or from borrowings pursuant
to margin accounts maintained in the ordinary course of business by FCP, Tinicum
and  FCCP at  Goldman,  Sachs & Co.;  and  (iii)  with  respect  to the  Managed
Accounts,  from  the  working  capital  of  each  Managed  Account  and/or  from
borrowings  pursuant to margin  accounts  maintained  in the ordinary  course of
business by some of the Managed Accounts at Goldman,  Sachs & Co. FCP,  Tinicum,
FCCP  and  some  of the  Managed  Accounts  hold  certain  securities  in  their
respective  margin  accounts at Goldman,  Sachs & Co., and the accounts may from
time to time have debit balances.  It is not possible to determine the amount of
borrowings, if any, used to acquire the Shares.

Item 4. Purpose Of The Transaction.

     The purpose of the  acquisition  of the Shares is for  investment,  and the
acquisitions of the Shares by each of the  Partnerships and the Managed Accounts
were made in the  ordinary  course of business and were not made for the purpose
of acquiring control of the Company.

     Although no Reporting  Person has any specific  plan or proposal to acquire
or dispose of Shares,  consistent  with its investment  purpose,  each Reporting
Person  at any time  and from  time to time may  acquire  additional  Shares  or
dispose of any or all of its Shares depending upon an ongoing  evaluation of the
investment  in  the  Shares,  prevailing  market  conditions,  other  investment
opportunities,  liquidity  requirements  of the  Reporting  Person  and/or other
investment  considerations.   No  Reporting  Person  has  made  a  determination
regarding a maximum or minimum  number of Shares  which it may hold at any point
in time.


                              Page 25 of 41 Pages
<PAGE>

     Also,  consistent with their investment  intent,  the Reporting Persons may
engage in communications  with one or more  shareholders of the Company,  one or
more  officers  of the  Company  and/or  one or more  members  of the  board  of
directors of the Company regarding the Company, including but not limited to its
operations.

     Except to the extent the foregoing  may be deemed a plan or proposal,  none
of the  Reporting  Persons has any plans or proposals  which relate to, or could
result in,  any of the  matters  referred  to in  paragraphs  (a)  through  (j),
inclusive,  of the instructions to Item 4 of Schedule 13D. The Reporting Persons
may,  at any time and from time to time,  review or  reconsider  their  position
and/or change their purpose  and/or  formulate  plans or proposals  with respect
thereto.

Item 5. Interest In Securities Of The Issuer.

     (a) The Partnerships

          (a),(b)   The  information set forth in Rows 7 through 13 of the cover
                    page hereto for each  Partnership is incorporated  herein by
                    reference for each such  Partnership.  The percentage amount
                    set forth in Row 13 of each  cover page  filed  herewith  as
                    well as  Footnote  Two hereto is  calculated  based upon the
                    32,090,507 Shares  outstanding as of May 1, 1999 as reported
                    by the Company in its Quarterly  Report on Form 10-Q for the
                    period  ended  May 1, 1999  filed  with the  Securities  and
                    Exchange Commission on June 11, 1999.

          (c)  The trade dates, number of Shares purchased or sold and the price
               per Share (including  commissions) for all purchases and sales of
               the Shares by the  Partnerships in the past 60 days are set forth
               on Schedules A-F hereto and are incorporated herein by reference.
               All of such transactions were open-market transactions.

          (d)  The  General  Partner  has the power to direct the affairs of the
               Partnerships,  including the  disposition  of the proceeds of the
               sale of the Shares. The Individual Reporting Persons are managing
               members of the General Partner.

          (e)  Not applicable.

     (b) The Management Company


                              Page 26 of 41 Pages
<PAGE>

          (a),(b)   The  information set forth in Rows 7 through 13 of the cover
                    page  hereto  for the  Management  Company  is  incorporated
                    herein by reference.

          (c)  The trade dates, number of Shares purchased or sold and the price
               per Share (including  commissions) for all purchases and sales of
               the Shares by the  Management  Company  on behalf of the  Managed
               Accounts  in the past 60 days are set forth on  Schedule G hereto
               and  are   incorporated   herein  by   reference.   All  of  such
               transactions were open-market transactions.

          (d)  The Management Company,  as an investment adviser,  has the power
               to direct  the  disposition  of the  proceeds  of the sale of the
               Shares held by the Managed  Accounts.  The  Individual  Reporting
               Persons other than Fairman are managing members of the Management
               Company.

          (e)  Not applicable.

     (c) The General Partner

          (a),(b)   The  information set forth in Rows 7 through 13 of the cover
                    page hereto for the General Partner is  incorporated  herein
                    by reference.

          (c)  None.

          (d)  The  General  Partner  has the power to direct the affairs of the
               Partnerships,  including the  disposition  of the proceeds of the
               sale of the Shares. The Individual Reporting Persons are managing
               members of the General Partner.

          (e)  Not applicable.

     (d) The Individual Reporting Persons

          (a),(b)   The  information set forth in Rows 7 through 13 of the cover
                    page  hereto  for  each  Individual   Reporting   Person  is
                    incorporated  herein by reference  for each such  Individual
                    Reporting Person.

          (c)  None.

          (d)  The  General  Partner  has the power to direct the affairs of the
               Partnerships,  including the  disposition  of the proceeds of the
               sale of the Shares.  The  Management  Company,  as an  investment
               adviser,  has the power to direct the disposition of the proceeds
               of the  sale of the  Shares  held by the  Managed  Accounts.  The
               Individual  Reporting Persons are managing members of the General
               Partner.  The Individual Reporting Persons other than Fairman are
               managing members of the Management Company.

          (e)  Not applicable.


                              Page 27 of 41 Pages
<PAGE>

     The Shares reported hereby for the  Partnerships  are owned directly by the
Partnerships  and those  reported  by the  Management  Company  on behalf of the
Managed  Accounts  are owned  directly  by the  Managed  Accounts.  The  General
Partner,  as  general  partner  to the  Partnerships,  may be  deemed  to be the
beneficial  owner of all such Shares owned by the  Partnerships.  The Management
Company, as investment adviser to the Managed Accounts,  may be deemed to be the
beneficial  owner of all such Shares owned by the Managed  Accounts.  The eleven
Individual  Reporting  Persons  who are  managing  members  of both the  General
Partner and the Management Company may each be deemed to be the beneficial owner
of all such Shares held by the Partnerships and the Managed  Accounts.  Fairman,
as a  managing  member  of only the  General  Partner,  may be  deemed to be the
beneficial  owner  of all  such  Shares  held by the  Partnerships.  Each of the
Management  Company,  the General Partner and the Individual  Reporting  Persons
hereby disclaims any beneficial ownership of any such Shares.

Item 6.  Contracts, Arrangements, Understandings Or
         Relationships With Respect To Securities Of The Issuer.

     Except  as  described   above,   there  are  no  contracts,   arrangements,
understandings or relationships (legal or otherwise) among the Reporting Persons
or between such persons and any other person with respect to any  securities  of
the Company,  including but not limited to transfer or voting of any  securities
of the Company, finder's fees, joint ventures, loan or option arrangements, puts
or calls, guarantees of profits,  divisions of profits or loss, or the giving or
withholding of proxies.

Item 7. Materials To Be Filed As Exhibits.

     There is filed  herewith as Exhibit 1 a written  agreement  relating to the
filing of joint acquisition statements as required by Rule 13d-1(f)(1) under the
Securities Exchange Act of 1934, as amended.


                              Page 28 of 41 Pages
<PAGE>


                                   SIGNATURES

     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.

Dated: September 9, 1999


                    /s/ Thomas F. Steyer
                    ----------------------------------------
                    FARALLON PARTNERS, L.L.C.,
                    on its own behalf and as General Partner of
                    FARALLON CAPITAL PARTNERS, L.P.,
                    FARALLON CAPITAL INSTITUTIONAL PARTNERS, L.P.,
                    FARALLON CAPITAL INSTITUTIONAL PARTNERS II, L.P.,
                    FARALLON CAPITAL INSTITUTIONAL PARTNERS III, L.P.,
                    TINICUM PARTNERS, L.P.,
                    And FARALLON CAPITAL (CP) INVESTORS, L.P.,
                    By Thomas F. Steyer,
                    Senior Managing Member


                    /s/ Thomas F. Steyer
                    ----------------------------------------
                    FARALLON CAPITAL MANAGEMENT, L.L.C.,
                    By Thomas F. Steyer,
                    Senior Managing Member


                    /s/ Thomas F. Steyer
                    ----------------------------------------
                    Thomas F. Steyer, individually and as attorney-in-fact
                    for each of Enrique H. Boilini, David I. Cohen,
                    Joseph F. Downes, William F. Duhamel, Fleur E. Fairman,
                    Jason M. Fish, Andrew B. Fremder, Richard B. Fried,
                    William F. Mellin, Stephen L. Millham, and Meridee A. Moore.

     The Powers of Attorney,  each executed by Boilini,  Cohen, Downes, Fairman,
Fish,  Fremder,  Mellin,  Millham and Moore authorizing  Steyer to sign and file
this Schedule 13D on each person's behalf, which were filed with Amendment No. 1
to the  Schedule  13D filed  with the  Securities  and  Exchange  Commission  on
September 26, 1997, by such  Reporting  Persons with respect to the Common Stock
of Sphere Drake Holdings  Limited,  are hereby  incorporated  by reference.  The
Powers of Attorney executed by Duhamel and Fried authorizing  Steyer to sign and
file this Schedule 13D on each person's behalf,  which were filed with Amendment
No. 1 to the Schedule 13G filed with the Securities  and Exchange  Commission on
January 13, 1999, by such Reporting Persons with respect to the Callable Class A
Common  Shares  of  CliniChem  Development  Inc.,  are  hereby  incorporated  by
reference.


                              Page 29 of 41 Pages
<PAGE>


                                                                         ANNEX 1



     Set forth  below with  respect to the  Management  Company  and the General
Partner is the  following  information:  (a) name;  (b) address;  (c)  principal
business;  (d) state of  organization;  and (e) controlling  persons.  Set forth
below with respect to each  managing  member of the  Management  Company and the
General Partner is the following:  (a) name; (b) business address; (c) principal
occupation; and (d) citizenship.

1. The Management Company

    (a)   Farallon Capital Management, L.L.C.
    (b)   One Maritime Plaza, Suite 1325
          San Francisco, California  94111
    (c)   Serves as investment  adviser to various managed accounts
    (d)   Delaware limited liability company
    (e)   Managing Members: Thomas F. Steyer, Senior Managing Member; Enrique H.
          Boilini,  David I. Cohen, Joseph F. Downes,  William F. Duhamel, Jason
          M. Fish,  Andrew B.  Fremder,  Richard B.  Fried,  William F.  Mellin,
          Stephen L. Millham and Meridee A. Moore, Managing Members.

2. The General Partner

    (a)   Farallon Partners, L.L.C.
    (b)   c/o Farallon Capital Management, L.L.C.
          One Maritime Plaza, Suite 1325
          San Francisco, California  94111
    (c)   Serves as general partner to investment partnerships
    (d)   Delaware limited liability company
    (e)   Managing Members: Thomas F. Steyer, Senior Managing Member; Enrique H.
          Boilini,  David I. Cohen, Joseph F. Downes,  William F. Duhamel, Fleur
          E.  Fairman,  Jason M. Fish,  Andrew B.  Fremder,  Richard  B.  Fried,
          William F. Mellin,  Stephen L. Millham and Meridee A. Moore,  Managing
          Members.

3. The Individual Reporting Persons

     Except as stated  below,  each of the  Individual  Reporting  Persons  is a
     United  States  citizen  whose  business  address is c/o  Farallon  Capital
     Management,   L.L.C.,  One  Maritime  Plaza,  Suite  1325,  San  Francisco,
     California  94111.  Enrique H.  Boilini  is an  Argentinean  citizen  whose
     business address is c/o Farallon Capital Management,  L.L.C., 75 Holly Hill
     Lane,  Greenwich,  Connecticut  06830.  David I.  Cohen is a South  African
     citizen.  The principal occupation of Thomas F. Steyer is serving as senior
     managing  member of the  Management  Company and the General  Partner.  The
     principal  occupation  of Fairman  is  serving as a managing  member of the
     General  Partner.   The  principal  occupation  of  each  other  Individual
     Reporting  Person is serving as a  managing  member of both the  Management
     Company and the General Partner.


                              Page 30 of 41 Pages
<PAGE>


                                   SCHEDULE A

                         FARALLON CAPITAL PARTNERS, L.P.


                                 NO. OF SHARES
                                 PURCHASED (P)             PRICE
       TRADE DATE                 OR SOLD (S)            PER SHARE

        07-26-99                 109,800 (P)              $34.75
        07-26-99                  10,000 (P)              $34.67
        08-04-99                   7,800 (P)              $36.52
        08-05-99                   3,900 (P)              $35.62
        08-06-99                   5,200 (P)              $35.80
        08-06-99                   5,200 (P)              $35.18
        08-06-99                   5,200 (P)              $36.49
        08-09-99                   6,500 (P)              $36.28
        08-10-99                  10,400 (P)              $36.19
        08-10-99                  11,700 (P)              $36.29
        08-10-99                   3,900 (P)              $36.05
        08-11-99                   2,600 (P)              $36.27
        08-11-99                  10,000 (P)              $36.99
        08-12-99                  10,400 (P)              $37.40
        08-12-99                  35,100 (P)              $37.48
        08-13-99                   4,200 (P)              $37.78
        08-13-99                   8,100 (P)              $37.55
        08-16-99                  25,700 (P)              $38.21
        08-16-99                  33,800 (P)              $38.26
        08-17-99                   3,600 (P)              $37.43
        08-17-99                  17,600 (P)              $37.35
        08-18-99                  32,100 (P)              $38.26
        08-18-99                  31,000 (P)              $38.06
        08-18-99                   8,100 (P)              $38.06
        08-19-99                  36,800 (S)              $37.70
        08-23-99                     800 (P)              $38.40
        08-24-99                   9,000 (P)              $39.66
        08-25-99                   6,800 (P)              $40.27
        08-25-99                   6,500 (P)              $39.93
        08-26-99                   1,800 (P)              $40.61
        08-27-99                   2,300 (P)              $40.15
        08-30-99                   6,000 (P)              $40.44
        08-30-99                   3,900 (P)              $40.43
        08-31-99                   1,300 (P)              $40.02
        08-31-99                  39,100 (P)              $40.27
        09-01-99                   1,100 (P)              $41.21
        09-07-99                  20,900 (P)              $44.34


                              Page 31 of 41 Pages
<PAGE>


                                   SCHEDULE B

                  FARALLON CAPITAL INSTITUTIONAL PARTNERS, L.P.


                                 NO. OF SHARES
                                 PURCHASED (P)             PRICE
       TRADE DATE                 OR SOLD (S)            PER SHARE

        07-26-99                  87,800 (P)              $34.75
        07-26-99                   8,000 (P)              $34.67
        08-04-99                   6,000 (P)              $36.52
        08-05-99                   3,000 (P)              $35.62
        08-06-99                   4,000 (P)              $35.80
        08-06-99                   4,000 (P)              $35.18
        08-06-99                   4,000 (P)              $36.49
        08-09-99                   5,000 (P)              $36.28
        08-10-99                   8,000 (P)              $36.19
        08-10-99                   9,000 (P)              $36.29
        08-10-99                   3,000 (P)              $36.05
        08-11-99                   2,000 (P)              $36.27
        08-11-99                   7,500 (P)              $36.99
        08-12-99                   8,000 (P)              $37.40
        08-12-99                  27,000 (P)              $37.48
        08-13-99                   3,100 (P)              $37.78
        08-13-99                   6,000 (P)              $37.55
        08-16-99                  19,000 (P)              $38.21
        08-16-99                  25,000 (P)              $38.26
        08-17-99                   2,600 (P)              $37.43
        08-17-99                  13,000 (P)              $37.35
        08-18-99                  23,800 (P)              $38.26
        08-18-99                  23,000 (P)              $38.06
        08-18-99                   6,000 (P)              $38.06
        08-19-99                  28,200 (S)              $37.70
        08-23-99                     600 (P)              $38.40
        08-24-99                   7,600 (P)              $39.66
        08-25-99                   5,500 (P)              $40.27
        08-25-99                   5,300 (P)              $39.93
        08-26-99                   2,100 (P)              $40.61
        08-27-99                   2,000 (P)              $40.15
        08-30-99                   4,500 (P)              $40.44
        08-30-99                   3,000 (P)              $40.43
        08-31-99                   1,000 (P)              $40.02
        08-31-99                  29,300 (P)              $40.27
        09-01-99                     900 (P)              $41.21
        09-07-99                  17,100 (P)              $44.34


                              Page 32 of 41 Pages
<PAGE>


                                   SCHEDULE C

                FARALLON CAPITAL INSTITUTIONAL PARTNERS II, L.P.


                                 NO. OF SHARES
                                 PURCHASED (P)             PRICE
       TRADE DATE                 OR SOLD (S)            PER SHARE

        07-26-99                  17,600 (P)              $34.75
        07-26-99                   1,600 (P)              $34.67
        08-04-99                   1,200 (P)              $36.52
        08-05-99                     600 (P)              $35.62
        08-06-99                     800 (P)              $35.80
        08-06-99                     800 (P)              $35.18
        08-06-99                     800 (P)              $36.49
        08-09-99                   1,000 (P)              $36.28
        08-10-99                   1,600 (P)              $36.19
        08-10-99                   1,800 (P)              $36.29
        08-10-99                     600 (P)              $36.05
        08-11-99                     400 (P)              $36.27
        08-11-99                  18,900 (P)              $36.99
        08-12-99                   1,600 (P)              $37.40
        08-12-99                   5,400 (P)              $37.48
        08-13-99                     600 (P)              $37.78
        08-13-99                   1,200 (P)              $37.55
        08-16-99                   3,800 (P)              $38.21
        08-16-99                   5,000 (P)              $38.26
        08-17-99                     500 (P)              $37.43
        08-17-99                   2,600 (P)              $37.35
        08-18-99                   4,800 (P)              $38.26
        08-18-99                   4,600 (P)              $38.06
        08-18-99                   1,200 (P)              $38.06
        08-19-99                   7,200 (S)              $37.70
        08-23-99                     100 (P)              $38.40
        08-24-99                   1,400 (P)              $39.66
        08-25-99                   1,100 (P)              $40.27
        08-25-99                   1,000 (P)              $39.93
        08-26-99                     300 (P)              $40.61
        08-27-99                     100 (P)              $40.15
        08-30-99                     800 (P)              $40.44
        08-30-99                     500 (P)              $40.43
        08-31-99                     200 (P)              $40.02
        08-31-99                   4,900 (P)              $40.27
        09-01-99                     200 (P)              $41.21
        09-07-99                   4,800 (P)              $44.34


                              Page 33 of 41 Pages
<PAGE>


                                   SCHEDULE D

                FARALLON CAPITAL INSTITUTIONAL PARTNERS III, L.P.


                                 NO. OF SHARES
                                 PURCHASED (P)             PRICE
       TRADE DATE                 OR SOLD (S)            PER SHARE

        07-26-99                  39,500 (P)              $34.75
        07-26-99                   3,600 (P)              $34.67
        08-04-99                   2,400 (P)              $36.52
        08-05-99                   1,200 (P)              $35.62
        08-06-99                   1,600 (P)              $35.80
        08-06-99                   1,600 (P)              $35.18
        08-06-99                   1,600 (P)              $36.49
        08-09-99                   1,500 (P)              $36.28
        08-10-99                   2,400 (P)              $36.19
        08-10-99                   2,700 (P)              $36.29
        08-10-99                     900 (P)              $36.05
        08-11-99                     600 (P)              $36.27
        08-11-99                   3,300 (P)              $36.99
        08-12-99                   2,400 (P)              $37.40
        08-12-99                   8,100 (P)              $37.48
        08-13-99                     600 (P)              $37.78
        08-13-99                   1,200 (P)              $37.55
        08-16-99                   3,800 (P)              $38.21
        08-16-99                   5,000 (P)              $38.26
        08-17-99                     500 (P)              $37.43
        08-17-99                   2,600 (P)              $37.35
        08-18-99                   4,800 (P)              $38.26
        08-18-99                   4,600 (P)              $38.06
        08-18-99                   1,200 (P)              $38.06
        08-19-99                   8,900 (S)              $37.70
        08-23-99                     100 (P)              $38.40
        08-24-99                   1,400 (P)              $39.66
        08-25-99                   1,000 (P)              $40.27
        08-25-99                   1,000 (P)              $39.93
        08-26-99                     400 (P)              $40.61
        08-27-99                     200 (P)              $40.15
        08-30-99                   1,000 (P)              $40.44
        08-30-99                     700 (P)              $40.43
        08-31-99                     200 (P)              $40.02
        08-31-99                   6,500 (P)              $40.27
        09-01-99                     200 (P)              $41.21
        09-07-99                   3,800 (P)              $44.34


                              Page 34 of 41 Pages
<PAGE>


                                   SCHEDULE E

                             TINICUM PARTNERS, L.P.


                                 NO. OF SHARES
                                 PURCHASED (P)             PRICE
       TRADE DATE                 OR SOLD (S)            PER SHARE

        07-26-99                   6,600 (P)              $34.75
        07-26-99                     600 (P)              $34.67
        08-04-99                     500 (P)              $36.52
        08-05-99                     200 (P)              $35.62
        08-06-99                     300 (P)              $35.80
        08-06-99                     300 (P)              $35.18
        08-06-99                     300 (P)              $36.49
        08-09-99                     400 (P)              $36.28
        08-10-99                     600 (P)              $36.19
        08-10-99                     700 (P)              $36.29
        08-10-99                     200 (P)              $36.05
        08-11-99                     200 (P)              $36.27
        08-11-99                     800 (P)              $36.99
        08-12-99                     600 (P)              $37.40
        08-12-99                   2,000 (P)              $37.48
        08-13-99                     200 (P)              $37.78
        08-13-99                     500 (P)              $37.55
        08-16-99                   1,400 (P)              $38.21
        08-16-99                   1,900 (P)              $38.26
        08-17-99                     200 (P)              $37.43
        08-17-99                   1,000 (P)              $37.35
        08-18-99                   1,800 (P)              $38.26
        08-18-99                   1,700 (P)              $38.06
        08-18-99                     500 (P)              $38.06
        08-19-99                   2,200 (S)              $37.70
        08-23-99                     100 (P)              $38.40
        08-24-99                     700 (P)              $39.66
        08-25-99                     500 (P)              $40.27
        08-25-99                     500 (P)              $39.93
        08-26-99                     100 (P)              $40.61
        08-27-99                     200 (P)              $40.15
        08-30-99                     400 (P)              $40.44
        08-30-99                     200 (P)              $40.43
        08-31-99                     100 (P)              $40.02
        08-31-99                   2,400 (P)              $40.27
        09-01-99                     100 (P)              $41.21
        09-07-99                   1,400 (P)              $44.34


                              Page 35 of 41 Pages
<PAGE>


                                   SCHEDULE F

                      FARALLON CAPITAL (CP) INVESTORS, L.P.


                                 NO. OF SHARES
                                 PURCHASED (P)             PRICE
       TRADE DATE                 OR SOLD (S)            PER SHARE

        07-26-99                   8,800 (P)              $34.75
        07-26-99                     800 (P)              $34.67
        08-04-99                     600 (P)              $36.52
        08-05-99                     300 (P)              $35.62
        08-06-99                     400 (P)              $35.80
        08-06-99                     400 (P)              $35.18
        08-06-99                     400 (P)              $36.49
        08-09-99                     500 (P)              $36.28
        08-10-99                     800 (P)              $36.19
        08-10-99                     900 (P)              $36.29
        08-10-99                     300 (P)              $36.05
        08-11-99                     200 (P)              $36.27
        08-11-99                   1,100 (P)              $36.99
        08-12-99                     800 (P)              $37.40
        08-12-99                   2,700 (P)              $37.48
        08-13-99                     300 (P)              $37.78
        08-13-99                     600 (P)              $37.55
        08-16-99                   1,900 (P)              $38.21
        08-16-99                   2,500 (P)              $38.26
        08-17-99                     300 (P)              $37.43
        08-17-99                   1,300 (P)              $37.35
        08-18-99                   2,400 (P)              $38.26
        08-18-99                   2,300 (P)              $38.06
        08-18-99                     600 (P)              $38.06
        08-19-99                   2,900 (S)              $37.70
        08-26-99                     400 (P)              $40.61



                              Page 36 of 41 Pages
<PAGE>

                                   SCHEDULE G

                       FARALLON CAPITAL MANAGEMENT, L.L.C.


                                 NO. OF SHARES
                                 PURCHASED (P)             PRICE
       TRADE DATE                 OR SOLD (S)            PER SHARE

        07-26-99                 146,900 (P)              $34.75
        07-26-99                  13,400 (P)              $34.67
        08-04-99                   9,700 (P)              $36.52
        08-05-99                   4,800 (P)              $35.62
        08-06-99                   6,500 (P)              $35.80
        08-06-99                   6,500 (P)              $35.18
        08-06-99                   6,500 (P)              $36.49
        08-09-99                   8,500 (P)              $36.28
        08-10-99                  13,800 (P)              $36.19
        08-10-99                  15,400 (P)              $36.29
        08-10-99                   5,100 (P)              $36.05
        08-11-99                   3,400 (P)              $36.27
        08-11-99                  10,000 (P)              $36.99
        08-12-99                  13,800 (P)              $37.40
        08-12-99                  46,500 (P)              $37.48
        08-13-99                   5,500 (P)              $37.78
        08-13-99                  10,600 (P)              $37.55
        08-16-99                  33,600 (P)              $38.21
        08-16-99                  44,200 (P)              $38.26
        08-17-99                   4,700 (P)              $37.43
        08-17-99                  23,000 (P)              $37.35
        08-18-99                  43,500 (P)              $38.26
        08-18-99                  42,000 (P)              $38.06
        08-18-99                  11,000 (P)              $38.06
        08-19-99                  48,300 (S)              $37.70
        08-23-99                   1,100 (P)              $38.40
        08-24-99                  13,900 (P)              $39.66
        08-25-99                  10,200 (P)              $40.27
        08-25-99                   9,700 (P)              $39.93
        08-26-99                   4,100 (P)              $40.61
        08-27-99                   4,600 (P)              $40.15
        08-30-99                  11,000 (P)              $40.44
        08-30-99                   7,200 (P)              $40.43
        08-31-99                   2,500 (P)              $40.02
        08-31-99                  71,600 (P)              $40.27
        09-01-99                   2,200 (P)              $41.21
        09-07-99                  41,700 (P)              $44.34


                              Page 37 of 41 Pages
<PAGE>

        07-26-99                   4,400 (P)              $34.75
        07-26-99                     400 (P)              $34.67
        08-04-99                     300 (P)              $36.52
        08-05-99                     200 (P)              $35.62
        08-06-99                     200 (P)              $35.80
        08-06-99                     200 (P)              $35.18
        08-06-99                     200 (P)              $36.49
        08-09-99                     300 (P)              $36.28
        08-10-99                     400 (P)              $36.19
        08-10-99                     500 (P)              $36.29
        08-10-99                     200 (P)              $36.05
        08-11-99                     100 (P)              $36.27
        08-11-99                     600 (P)              $36.99
        08-12-99                     400 (P)              $37.40
        08-12-99                   1,400 (P)              $37.48
        08-13-99                     200 (P)              $37.78
        08-13-99                     300 (P)              $37.55
        08-16-99                   1,000 (P)              $38.21
        08-16-99                   1,300 (P)              $38.26
        08-17-99                     100 (P)              $37.43
        08-17-99                     600 (P)              $37.35
        08-18-99                   1,200 (P)              $38.26
        08-18-99                   1,200 (P)              $38.06
        08-18-99                     200 (P)              $38.06
        08-19-99                   1,500 (S)              $37.70
        08-24-99                     200 (P)              $39.66
        08-26-99                     200 (P)              $40.61
        08-30-99                     100 (P)              $40.43
        08-31-99                     800 (P)              $40.27
        09-07-99                     500 (P)              $44.34



        07-26-99                  17,600 (P)              $34.75
        07-26-99                   1,600 (P)              $34.67
        08-04-99                   1,500 (P)              $36.52
        08-05-99                     800 (P)              $35.62
        08-06-99                   1,000 (P)              $35.80
        08-06-99                   1,000 (P)              $35.18
        08-06-99                   1,000 (P)              $36.49
        08-09-99                   1,300 (P)              $36.28
        08-10-99                   2,000 (P)              $36.19
        08-10-99                   2,300 (P)              $36.29
        08-10-99                     800 (P)              $36.05
        08-11-99                     500 (P)              $36.27
        08-11-99                   2,800 (P)              $36.99
        08-12-99                   2,000 (P)              $37.40


                              Page 38 of 41 Pages
<PAGE>

        08-12-99                   6,800 (P)              $37.48
        08-13-99                     800 (P)              $37.78
        08-13-99                   1,500 (P)              $37.55
        08-16-99                   4,800 (P)              $38.21
        08-16-99                   6,300 (P)              $38.26
        08-17-99                     700 (P)              $37.43
        08-17-99                   3,300 (P)              $37.35
        08-18-99                   4,800 (P)              $38.26
        08-18-99                   4,600 (P)              $38.06
        08-18-99                   1,200 (P)              $38.06
        08-19-99                   6,500 (S)              $37.70
        08-23-99                     200 (P)              $38.40
        08-24-99                   1,800 (P)              $39.66
        08-25-99                   1,000 (P)              $40.27
        08-25-99                   1,000 (P)              $39.93
        08-26-99                     600 (P)              $40.61
        08-27-99                     600 (P)              $40.15
        08-30-99                   1,300 (P)              $40.44
        08-30-99                     800 (P)              $40.43
        08-31-99                     300 (P)              $40.02
        08-31-99                   8,100 (P)              $40.27
        09-01-99                     300 (P)              $41.21
        09-07-99                   4,800 (P)              $44.34









                              Page 39 of 41 Pages

<PAGE>


                                  EXHIBIT INDEX

EXHIBIT 1                      Joint Acquisition Statement Pursuant to Rule 13D-
                               (f)(1)
















                              Page 40 of 41 Pages

<PAGE>



                                                                       EXHIBIT 1
                                                                              to
                                                                    SCHEDULE 13D

                           JOINT ACQUISITION STATEMENT
                           PURSUANT TO RULE 13D-(f)(1)

     The  undersigned  acknowledge  and agree that the  foregoing  statement  on
Schedule  13D is  filed  on  behalf  of each of the  undersigned  and  that  all
subsequent amendments to this statement on Schedule 13D shall be filed on behalf
of each of the  undersigned  without the  necessity of filing  additional  joint
acquisition   statements.   The  undersigned  acknowledge  that  each  shall  be
responsible for the timely filing of such  amendments,  and for the completeness
and accuracy of the information concerning him, her or it contained therein, but
shall not be responsible  for the  completeness  and accuracy of the information
concerning the other  entities or persons,  except to the extent that he, she or
it knows or has reason to believe that such information is inaccurate.

Dated: September 9, 1999


                        /s/ Thomas F. Steyer
                        ----------------------------------------
                        FARALLON PARTNERS, L.L.C.,
                        on its own behalf and as General Partner of
                        FARALLON CAPITAL PARTNERS, L.P.,
                        FARALLON CAPITAL INSTITUTIONAL PARTNERS, L.P.,
                        FARALLON CAPITAL INSTITUTIONAL PARTNERS II, L.P.,
                        FARALLON CAPITAL INSTITUTIONAL PARTNERS III, L.P.,
                        TINICUM PARTNERS, L.P.,
                        And FARALLON CAPITAL (CP) INVESTORS, L.P.,
                        By Thomas F. Steyer,
                        Senior Managing Member


                        /s/ Thomas F. Steyer
                        ----------------------------------------
                        FARALLON CAPITAL MANAGEMENT, L.L.C.,
                        By Thomas F. Steyer,
                        Senior Managing Member


                        /s/ Thomas F. Steyer
                        ----------------------------------------
                        Thomas F. Steyer, individually and as attorney-in-fact
                        for each of Enrique H. Boilini, David I. Cohen,
                        Joseph F. Downes, William F. Duhamel, Fleur E. Fairman,
                        Jason M. Fish, Andrew B. Fremder, Richard B. Fried,
                        William F. Mellin, Stephen L. Millham, and
                        Meridee A. Moore.



                              Page 41 of 41 Pages



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