Exhibit Number (10)(ii)
                                                            To 3/31/97 Form 10-Q



                           NORTHERN TRUST CORPORATION

                          MANAGEMENT PERFORMANCE PLAN

                                      1997

I.   Purpose of Plan
     ---------------
     The purpose of the Management Performance Plan (the "Plan") is to promote
     the achievement of superior financial and operating performance of the
     Northern Trust Corporation and its subsidiaries (hereinafter referred to as
     the "Corporation"), and further the objective of delivering unrivaled
     service quality to its clients and partners through the awarding of cash
     incentive payments to selected officers.

II.  Plan Year
     ---------
     The Plan is effective from January 1, 1997 to December 31, 1997.

III. Eligibility and Participation
     -----------------------------
     Eligibility to participate in the Plan is restricted to selected executive
     officers and subject to approval by the Compensation and Benefits Committee
     of the Board of Directors (the "Committee").

IV.  Participant Target Awards
     -------------------------
     At the beginning of the Plan year, the Committee shall determine individual
     target awards. The target award will be described as a percent of the
     annual base salary earned during the Plan year.

V.   Award Determination
     -------------------
     The Committee establishes a Corporate Earnings Target for the Plan at the
     beginning of the Plan year. The available funding for participant awards
     will be based on (a) the aggregate of participants' target award amounts
     and (b) the Corporation's financial achievement versus the Corporate
     Earnings Target. The amount of the award funding will either increase or
     decrease as calculated by the formula detailed in Attachment I.

VI.  Payment of Awards
     -----------------
     Awards will be paid in cash as soon as practicable following the completion
     of the Plan year.

 
VII. Administration
     --------------

     The Plan shall be administered by the Committee. Subject to the provisions
     of the Plan, the Committee shall be authorized to interpret the Plan, to
     establish, amend and rescind any rules and regulations relating to the
     Plan, and to make all other determinations necessary or advisable for the
     administration of the Plan. The determinations of the Committee in the
     effective administration of the Plan, as described herein, shall be final
     and conclusive.

     The Board of Directors of the Corporation, by written resolution, may
     amend, suspend, or terminate any or all provisions of the Plan at any time.

VIII. Miscellaneous Provisions
      ------------------------

     The following miscellaneous provisions are applicable to the Plan:

     (a)  In the event of a participant's death, disability or retirement,
          awards shall be prorated to the date of the event, and paid as
          described in Section VI.

     (b)  Termination of employment by a participant during the Plan year, for
          reasons other than death, disability, or retirement shall result in
          immediate exclusion from the Plan unless the Compensation and Benefits
          Committee decides otherwise in its sole discretion.

     (c)  Except in the event of the death of a participant, the rights and
          interests of a participant under the Plan shall not be assigned,
          encumbered, or transferred.

     (d)  No employee or other person shall have any claim or right to be
          granted an award under the Plan. Neither the Plan, nor any action
          taken thereunder, shall be construed as giving any employee or other
          person any right to be retained in the employ of the Corporation.

     (e)  The Corporation shall have the right to deduct from all payments made
          under the Plan any taxes required by law to be withheld with respect
          to such payment.

     (f)  All questions pertaining to the validity, construction and
          administration of the Plan and any award hereunder shall be determined
          in conformity with the laws of the State of Illinois.

     (g)  Each participant shall designate a beneficiary (the "Designated
          Beneficiary") to receive the award, if any, allocated to a
          participant, in the event of such participant's death. If no
          Designated Beneficiary survives the participant, it shall be the
          surviving spouse of the participant or, if there is no surviving
          spouse, it shall be the participant's estate.