<PAGE> 1
EXHIBIT 23.4
CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement of our report on the financial
statements of R.W. Electronics, Inc. dated January 31, 2000, included in
VerticalNet, Inc.'s current report on Form 8-K dated March 31, 2000 and to all
references to our Firm included in this registration statement.
/s/ TONNESON & COMPANY CPAs PC
Wakefield, Massachusetts
September 15, 2000
