AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 25, 2003
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            SCHEDULE 14A INFORMATION
                    PROXY STATEMENT PURSUANT TO SECTION 14(a)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO.)

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          Rule 14a-6(e)(2))
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     |X|  Definitive Additional Materials
     [ ]  Soliciting Material Pursuant to Rule 14a-12

                              HERCULES INCORPORATED
                (Name of Registrant as Specified in Its Charter)

             THE HERCULES SHAREHOLDERS' COMMITTEE FOR NEW MANAGEMENT
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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             THE HERCULES SHAREHOLDERS' COMMITTEE FOR NEW MANAGEMENT

                       17 State Street, New York, NY 10004

                                            Sender's Direct Dial: (212) 821-1601

                                                                   June 25, 2003

Ms. Florentina Marinescu, Senior Analyst, U.S. Research
Mr. Rajeev Kumar, Senior Analyst, U.S. Research
Institutional Shareholder Services
2099 Gaither Road, Suite 501
Rockville, MD  20850

Dear Florentina and Rajeev:

        On our conference  call on Monday,  I understand  that an issue has been
raised,  I assume by Hercules  senior  management,  as to the  availability of a
refinancing  alternative  prior  to the  BetzDearborn  sale - a  question  which
management  now raises  apparently  for the first time despite the fact that the
full facts  concerning this matter were first laid out in our Preliminary  Proxy
statement,  filed on March 20.  There can be little  doubt that the  refinancing
option  was  available  to the  Company,  and I trust  that the  information  we
forwarded has been helpful to you.

        On another  issue,  in what one would  ordinarily  assume to be a simple
matter of fact,  Hercules  senior  management has  apparently  advised ISS, if I
understood  the point  correctly,  that the  Company has a very  productive  R&D
effort and that 18% of its current sales are from new products introduced in the
last five  years.  Contrary  to that  assertion,  the  Company's  R&D  effort is
substantially  below the specialty chemical industry average,  and we are simply
not generating  anywhere near that amount of sales from "new  products," as that
term is commonly used in industry.  This is further evidenced by the low rate of
sales growth at the Company for 2002 (about 50% of the industry average).

        While these two isolated issues may not drive your decision,  I write to
you about them because they raise a more  fundamental  question - to what extent
can ISS, any other  impartial  rating agency,  or arbiter in a contested  matter
rely on the  unsubstantiated  assertions  of a party whose claims in  connection
with a whole host of matters have to be regarded as suspect? In this connection,
despite the fact that we have called to the  attention of Hercules  shareholders
the many misleading and factually  incorrect  statements coming from management,
the Company has made little effort - nor could it - to rebut our contentions.

        You should know that we have  accepted  the offer of  Hercules'  largest
shareholder,  Mario Gabelli, to debate/discuss any of the issues with Bill Joyce
before  institutional   shareholders.   We  have  also  challenged  Joyce  to  a
debate/discussion  before  Hercules  employees  and  retirees in  Wilmington  to
address  unfounded  management  assertions  which could vitally affect  Hercules
employees and retirees.  To date, Joyce has not responded to either  invitation.
In this regard  should ISS also so desire,  we would be





more than willing to be part of any meeting with ISS, Joyce and  representatives
of our  Committee  face-to-face  to  address  any other  issues of concern or in
conflict in connection with your process.

                                            Sincerely,

                                            /s/SAMUEL J. HEYMAN
                                            ----------------------
                                            Samuel J. Heyman

SJH:kjc