===============================================================================

                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549

                             ------------------

                              SCHEDULE TO-T/A
               TENDER OFFER STATEMENT UNDER SECTION 14(D)(1)
         OR SECTION 13(E)(1) OF THE SECURITIES EXCHANGE ACT OF 1934
                             (FINAL AMENDMENT)

                             ------------------

                          HOUGHTON MIFFLIN COMPANY
                     (Name of Subject Company (Issuer))

                             SORAYA MERGER INC.
                             VIVENDI UNIVERSAL
                    (Names of Filing Persons (Offerors))

                             ------------------

                  COMMON STOCK, PAR VALUE $1.00 PER SHARE
                       (Title of Class of Securities)

                             ------------------

                                  44156010
                   (Cusip Number of Class of Securities)

                             ------------------

                       GEORGE E. BUSHNELL, III, ESQ.
                   C/O VIVENDI UNIVERSAL HOLDING I CORP.
                      800 THIRD AVENUE, SEVENTH FLOOR
                          NEW YORK, NEW YORK 10022
                         TELEPHONE: (212) 572-7855
        (Name, address and telephone number of person authorized to
      receive notices and communications on behalf of filing persons)

                                 COPIES TO:

                            FAIZA J. SAEED, ESQ.
                           CRAVATH SWAINE & Moore
                             825 EIGHTH AVENUE
                       NEW YORK, NEW YORK 10019-7475
                         TELEPHONE: (212) 474-1000

                             ------------------

                         CALCULATION OF FILING FEE:
===============================================================================
   Transaction Valuation*                         Amount of Filing Fee**
-------------------------------------------------------------------------------
     $1,839,966,000.00                                   $367,994
===============================================================================

*For purposes of calculating the filing fee only. This calculation assumes
   the purchase of 30,666,100 shares of common stock of Houghton Mifflin
 Company subject to outstanding options to purchase shares of common stock
  of Houghton Mifflin Company from Houghton Mifflin Company at the tender
offer price of $60.00 per share of common stock.

**The amount of the filing fee, calculated in accordance with Rule 0-11 of
 the Securities Exchange Act of 1934, as amended, equals 1/50 of 1% of the
                          transaction valuation.

     |X| CHECK THE BOX IF ANY PART OF THE FEE IS OFFSET AS PROVIDED BY
   RULE 0-11(A)(2) AND IDENTIFY THE FILING WITH WHICH THE OFFSETTING FEE
 WAS PREVIOUSLY PAID. IDENTIFY THE PREVIOUS FILING BY REGISTRATION STATEMENT
        NUMBER OR THE FORM OR SCHEDULE AND THE DATE OF ITS FILING.


Amount Previously Paid:.............$367,994  Filing Party:...Vivendi Universal
Form or Registration No.:.SC TO-T (005-08062) Date Filed:..........June 8, 2001

   |_| CHECK THE BOX IF THE FILING RELATES TO PRELIMINARY COMMUNICATIONS
              MADE BEFORE THE COMMENCEMENT OF A TENDER OFFER.

  Check the appropriate boxes below to designate any transactions to which
                           the statement relates:

                    |X| THIRD-PARTY TENDER OFFER SUBJECT TO RULE 14D-1.
                    |_| ISSUER TENDER OFFER SUBJECT TO RULE 13E-4.
                    |_| GOING-PRIVATE TRANSACTION SUBJECT TO RULE 13E-3.
                    |_| AMENDMENT TO SCHEDULE 13D UNDER  RULE 13D-2.

   Check the following box if the filing is a final amendment reporting
                    the results of the tender offer: |X|

===============================================================================





                                                                          2

     This Final Amendment amends the Tender Offer Statement on Schedule TO
initially filed on June 8, 2001, by Vivendi Universal, a societe anonyme
organized under the laws of France ("Parent"), and Soraya Merger Inc., a
Massachusetts corporation and a wholly owned subsidiary of Parent (the
"Purchaser"), relating to the third-party tender offer (the "Offer") by
Purchaser to purchase all the outstanding shares of Common Stock, par value
$1.00 per share, including the rights to purchase the Series A Junior
Participating Preferred Stock issued pursuant to the Rights Agreement, as
amended, dated as of July 30, 1997 by and between the Company (as defined
below) and BankBoston, N.A., as Rights Agent (together, the "Shares"), of
Houghton Mifflin Company, a Massachusetts corporation (the "Company"), at a
purchase price of $60.00 per Share, net to the seller in cash, without
interest thereon, upon the terms and subject to the conditions set forth in
the Offer to Purchase dated June 8, 2001 and in the related Letter of
Transmittal, copies of which were filed with the Schedule TO filed on June
8, 2001 as Exhibits (a)(1)(A) and (a)(1)(C), respectively. This Final
Amendment is being filed on behalf of Parent and the Purchaser.

ITEM 11.  ADDITIONAL INFORMATION.

     Item 11 is hereby amended and supplemented by the following:

     At 12:00 midnight, New York City time, on Friday, July 6, 2001, the
Offer expired. Based on information provided by the Depositary, 25,401,187
Shares (with an additional 2,065,776 Shares subject to guaranteed
delivery), representing approximately 90% of the 30,646,700 Shares
outstanding on a fully diluted basis as of June 30, 2001, were validly
tendered into the Offer and not withdrawn. The Purchaser has accepted for
payment and will promptly pay for all validly tendered Shares in accordance
with the terms of the Offer.

     On July 9, 2001, Parent and the Purchaser announced the completion of
the Offer and issued a press release, a copy of which is attached hereto as
Exhibit (a)(1)(M) and is incorporated herein by reference.


ITEM 12.  EXHIBITS.


*(a)(1)(A)  Offer to Purchase dated June 8, 2001.
*(a)(1)(B)  Recommendation Statement on Schedule 14D-9 of the Company
            dated June 8, 2001.
*(a)(1)(C)  Letter of Transmittal.
*(a)(1)(D)  Notice of Guaranteed Delivery.
*(a)(1)(E)  Letter to Brokers, Dealers, Banks, Trust Companies and
            Other Nominees.
*(a)(1)(F)  Letter to Clients for use by Brokers, Dealers, Banks, Trust
            Companies and Other Nominees.
*(a)(1)(G)  Guidelines for Certification of Taxpayer Identification Number on
            Substitute Form W-9.
*(a)(1)(H)  Joint Press Release issued by Parent and the Company on
            June 1, 2001.
*(a)(1)(I)  Summary Advertisement published June 8, 2001.
*(a)(1)(J)  Letter to Stockholders of the Company from the Chairman of the
            Board and Chief Executive Officer of the Company dated June 8, 2001.
*(a)(1)(K)  Press Release issued by Parent on June 29, 2001.
*(a)(1)(L)  Advertisement issued by Parent on July 5, 2001.
(a)(1)M)    Press Release issued by Parent on July 9, 2001.
(b)         Not applicable.
*(d)(1)     Agreement and Plan of Merger dated as of June 1, 2001, among Parent,
            the Purchaser and the Company.
*(d)(2)     Confidentiality Agreement dated January 17, 2001 between Parent,
            the Company and Havas.
(g)         Not applicable.
(h)         Not applicable.



*  Previously filed.






                                                                          3

                                 SIGNATURES

     After due inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete
and correct.

                                      SORAYA MERGER  INC.

                                       By: /s/ Debra Ford
                                          ------------------------------------
                                          Name: Debra Ford
                                          Title: President, Treasurer and Clerk


                                      VIVENDI UNIVERSAL

                                       By: /s/ George E. Bushnell, III
                                          ------------------------------------
                                          Name:  George E. Bushnell, III
                                          Title:  Vice President

Dated: July 9, 2001







                                                                          4

                             INDEX TO EXHIBITS


*(a)(1)(A)  Offer to Purchase dated June 8, 2001.
*(a)(1)(B)  Recommendation Statement on Schedule 14D-9 of the Company
            dated June 8, 2001.
*(a)(1)(C)  Letter of Transmittal.
*(a)(1)(D)  Notice of Guaranteed Delivery.
*(a)(1)(E)  Letter to Brokers, Dealers, Banks, Trust Companies and
            Other Nominees.
*(a)(1)(F)  Letter to Clients for use by Brokers, Dealers, Banks, Trust
            Companies and Other Nominees.
*(a)(1)(G)  Guidelines for Certification of Taxpayer Identification Number on
            Substitute Form W-9.
*(a)(1)(H)  Joint Press Release issued by Parent and the Company on
            June 1, 2001.
*(a)(1)(I)  Summary Advertisement published June 8, 2001.
*(a)(1)(J)  Letter to Stockholders of the Company from the Chairman of the
            Board and Chief Executive Officer of the Company dated June 8, 2001.
*(a)(1)(K)  Press Release issued by Parent on June 29, 2001.
*(a)(1)(L)  Advertisement issued by Parent on July 5, 2001.
(a)(1)M)    Press Release issued by Parent on July 9, 2001.
(b)         Not applicable.
*(d)(1)     Agreement and Plan of Merger dated as of June 1, 2001, among Parent,
            the Purchaser and the Company.
*(d)(2)     Confidentiality Agreement dated January 17, 2001 between Parent,
            the Company and Havas.
(g)         Not applicable.
(h)         Not applicable.

* Previously filed.