EXHIBIT 23.1
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
  As independent public accountants, we hereby consent to the incorporation of
our report included in this Form 10-K, dated January 26, 1998, into the
Company's previously filed Registration Statement File Nos. 333-00300, 333-
02196, 333-19367 and 333-22675.
 
                                          Arthur Andersen, LLP
 
Boston, Massachusetts
March 27, 1998