EXHIBIT 23.1
 
                         CONSENT OF ERNST & YOUNG LLP
 
  We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Mallinckrodt Inc.
for the registration of debt securities and to the incorporation by reference
therein of our report dated July 30, 1997, with respect to the consolidated
financial statements and schedules of Mallinckrodt Inc. in its Annual Report
(Form 10-K) for the year ended June 30, 1997, filed with the Securities and
Exchange Commission.
 
                                              Ernst & Young LLP
 
St. Louis, Missouri
December 15, 1997