EXTENSION OF TERM The undersigned Trustees, constituting all of the duly acting Trustees of that certain Voting Trust Agreement, dated as of June 21, 1982, as amended and restated as of December 11, 1990 (the "Voting Trust Agreement"), do hereby...

                                                                       Exhibit 4

                                EXTENSION OF TERM



     The undersigned  Trustees,  constituting all of the duly acting Trustees of
that certain Voting Trust  Agreement,  dated as of June 21, 1982, as amended and
restated  as of December  11, 1990 (the  "Voting  Trust  Agreement"),  do hereby
irrevocably  elect to exercise the option  provided in Paragraph  5.1 thereof to
continue the term of such Voting Trust Agreement until April 1, 2005.

     Dated and effective as of this 31st day of March, 1999. This instrument may
be executed in counterparts.



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