EXHIBIT 23.1

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

         As independent public accountants,  we hereby consent to the use of our
reports  (and to all  references  to our firm)  included in or made part of this
Registration Statement on Form S-3.

                               ARTHUR ANDERSEN LLP
                               /S/ARTHUR ANDERSEN LLP
Boston, Massachusetts
January 9, 1997