
                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


     As  independent public accountants, we  hereby consent to the incorporation
of our reports  included in this Form 10-K, into  the Company's previously filed
Registration  Statement File No.  333-01718 on Form  S-8, Registration Statement
File No. 333-23575 on Form S-3, and Registration Statement File No. 333-40167.



                                        ARTHUR ANDERSEN LLP


Chicago, Illinois
March 27, 1998

