EXHIBIT 23.4


                       CONSENT OF INDEPENDENT ACCOUNTANTS


The Board of Directors
WPL Laboratories, Inc.:


     We consent to the use of our report on the financial statements of WPL
Laboratories, Inc. as of December 31, 1997 and 1998 and for each of the years
then ended dated June 30, 1999 included herein and to the reference to our
firm under the headings "Selected Financial Data" and "Experts" in the
prospectus.


                                       /s/ KPMG



Boston, Massachusetts
October 1, 1999