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                                                                   EXHIBIT 99(b)
 
                       FINANCIAL STATEMENTS AND EXHIBITS
                      REQUIRED BY FORM 11-K ANNUAL REPORT
        PURSUANT TO SECTION 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934
 
                           COMMISSION FILE NO. 1-3305
 
                             ---------------------
 
           MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
                            (Full title of the plan)
 
                               MERCK & CO., INC.
                                  P.O. BOX 100
                   WHITEHOUSE STATION, NEW JERSEY 08889-0100
             (Name of issuer of the securities held pursuant to the
            plan and the address of its principal executive office)
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                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To Merck & Co., Inc.:
 
     We have audited the accompanying statements of net assets available for
benefits of the Merck & Co., Inc. Employee Stock Purchase and Savings Plan as of
December 31, 1993 and 1992, and the related statement of changes in net assets
available for benefits for the year ended December 31, 1993. These financial
statements and the schedules referred to below are the responsibility of the
Plan's management. Our responsibility is to express an opinion on these
financial statements and schedules based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the net assets available for benefits of the Plan as
of December 31, 1993 and 1992, and the changes in its net assets available for
benefits for the year ended December 31, 1993, in conformity with generally
accepted accounting principles.
 
     Our audits were made for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedules of assets held
for investment purposes and reportable transactions are presented for purposes
of additional analysis and are not a required part of the basic financial
statements but are supplementary information required by the Department of
Labor's Rules and Regulations for Reporting and Disclosure under the Employee
Retirement Income Security Act of 1974. The supplemental schedules have been
subjected to the auditing procedures applied in the audit of the basic financial
statements and, in our opinion, are fairly stated in all material respects in
relation to the basic financial statements taken as a whole.
 
                                          ARTHUR ANDERSEN & CO.
 
New York, New York
May 12, 1994
 
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The financial statements and schedules prepared in accordance with the financial
reporting requirements of ERISA and belonging to this Exhibit 99(b) are being
filed in paper under cover of Form SE pursuant to Regulation S-T, Item 311.
 
                              
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                                                                      EXHIBIT 23
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
     As independent public accountants, we hereby consent to the incorporation
by reference of our report dated May 12, 1994 included in the financial
statements and exhibits required by Form 11-K Annual Report for the Merck & Co.,
Inc. Employee Stock Purchase and Savings Plan into the Company's previously
filed Registration Statements on Form S-8 (Nos. 33-21087, 33-21088, 33-36101,
33-40177, 33-51235 and 33-53463), on Form S-4 (No. 33-50667) and on Form S-3
(Nos. 33-60322, 33-39349 and 33-51785).
 
                                            ARTHUR ANDERSEN & CO.
 
New York, New York
June 10, 1994