WITNESSETH:

                                                                 Exhibit (g)(25)

                              ADDITIONAL PORTFOLIO AGREEMENT

         This Agreement, dated as of September 27, 1999, is between Xxxxxxx
Xxxxx Trust (the "Trust"), a business trust organized and existing under the
laws of the State of Delaware and having its principal place of business at 0000
Xxxxx Xxxxx, Xxxxxxx, Xxxxxxxx 00000, and State Street Bank and Trust Company
(the "Custodian"), a Massachusetts trust company having its principal place of
business at 000 Xxxxxxxx Xxxxxx, Xxxxxx, Xxxxxxxxxxxxx 00000.

                                   WITNESSETH:

          WHEREAS, Xxxxxxx Xxxxx Trust and Xxxxxxx Sachs Money Market Trust,
Massachusetts business trusts and Xxxxxxx Xxxxx Equity Portfolios, Inc., a
Maryland corporation (each, a "Predecessor Entity") have each entered into
separate Custodian Contracts with the Custodian dated as of July 15, 1991,
December 27, 1978 and April 6, 1990, respectively (each, a "Contract", and
collectively, the "Contracts");

          WHEREAS, pursuant to a reorganization on April 30, 1997, the
investment portfolios of each Predecessor Entity reorganized into corresponding
separate portfolios of the Trust;

          WHEREAS, pursuant to three letter agreements between the Trust and the
Custodian, each dated as of September 27, 1999, each of the Contracts remains in
full force and effect with respect to such separate portfolios of the Trust; and

          WHEREAS, each of the Contracts allows for the addition of additional
 portfolios of investments, pursuant to mutual agreement between the Trust and
 the Custodian;

          NOW THEREFORE, in consideration of the mutual covenants and agreements
 hereinafter contained, the parties hereto agree as follows:

          That each of the portfolios listed on Appendix A hereto has been added
 to the corresponding Contract listed on such Appendix A, effective as of the
 corresponding date listed on such Appendix A.

          IN WITNESS WHEREOF, each of the parties has caused this instrument to
 be executed in its name and behalf by its duly authorized representative as of
 the date first above written.


STATE STREET BANK AND TRUST                       XXXXXXX SACHS TRUST
COMPANY

By /s/ Xxxxxx X. Xxxxx                            By /s/ Xxxxxxx Xxxxxxx
  -------------------------                         -------------------------
Its: Vice Chairman                                Its: Vice Chairman