Exhibit 4(a)(iv)
 
  Any Subsequent Indenture with respect to Senior Debt Securities entered into
subsequent to the Subsequent Indenture described in Exhibit 4(a)(iii) will be
substantially the same as the Indenture, dated as of October 1, 1993, between
the Company and The Chase Manhattan Bank (National Association) contained as
Exhibit 4(a)(ii) to the Registration Statement except that the name of any
Subsequent Trustee with respect to any Subsequent Indenture will be inserted
and any Subsequent Indenture will be dated as of a current date.