UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON D.C. 20549

                                  SCHEDULE 14A
          Proxy Statement Pursuant to Section 14(a) of the Securities
                              Exchange Act of 1934

Filed by the Registrant [x]
Filed by a Party other than the Registrant [ ]

Check the appropriate box:

[ ]   Preliminary Proxy Statement
[ ]   CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE
      14a-6(e)(2))
[ ]   Definitive Proxy Statement
[X]   Definitive Additional Materials
[ ]   Soliciting Material Pursuant to Rule 14a-12

                              HERCULES INCORPORATED
-------------------------------------------------------------------------------
               (Name of Registrant as Specified In Its Charter)



-------------------------------------------------------------------------------
   (Name of Person(s) Filing Proxy Statement, if other than the Registrant)



Payment of Filing Fee (Check the appropriate box):

[x] No fee required.

[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

      1) Title of each class of securities to which transaction applies:

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

      2) Aggregate number of securities to which transaction applies:

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

      3)Per unit price or other underlying value of transaction computed
        pursuant to Exchange Act Rule 0-11 (set forth the amount on which the
        filing fee is calculated and state how it was determined):

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

      4) Proposed maximum aggregate value of transaction:

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

      5) Total fee paid:

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



[ ]  Fee paid previously with preliminary materials.

[ ]  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2) and identify the filing for which the offsetting fee was paid
     previously. Identify the previous filing by registration statement number,
     or the Form or Schedule and the date of its filing.

      1) Amount Previously Paid:

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

      2) Form, Schedule or Registration Statement No.:

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

      3) Filing Party:

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

      4) Date Filed:

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




[The following article was posted on Hercules' web site on July 17, 2003:]

                                 Reprinted From
                               THE NEW YORK TIMES
                                                           Friday, July 11, 2003
--------------------------------------------------------------------------------

                    CORPORATE RAIDER TRIES A MONEYLESS COUP

By ANDREW ROSS SORKIN

Samuel J. Heyman, the 1980's corporate raider, is at it again.

Mr. Heyman, who bought the chemical giant GAF in 1988 for about $5 billion after
a long tug of war with the board, now wants to take over Hercules Inc., a
chemical company worth more than $1 billion, for nothing.

Mr. Heyman, who already controls four dissident seats on the Hercules board that
he won in 2001 after a drawn-out proxy fight, has started another proxy contest
for four more seats to put him in charge of the 13-member board. While Mr.
Heyman is not seeking financial control of Hercules, if he succeeds, he would
arguably have day-to-day control.

The management of Hercules, led by William H. Joyce, has mounted a campaign to
fend off Mr. Heyman's advances, arguing that he "is trying to seize control of
the company without paying shareholders anything."

The cast of characters in this bitter battle includes Mario Gabelli, the largest
shareholder of Hercules through his firm, Gabelli Asset Management, who is
trying to play the role of referee.

With only two weeks before the annual shareholder meeting of Hercules - when the
vote will be taken - Mr. Heyman's chance of success appears tenuous. Yesterday,
Hercules' management scored its second victory this week, announcing that it
expected to beat analysts' second-quarter and full-year estimates. Hercules,
based in Wilmington, Del., said it would earn 21 cents to 23 cents a share in
the quarter, excluding certain items.

On Wednesday, Institutional Shareholder Services, an influential adviser to
large institutional investors, came out against Mr. Heyman in favor of
management. "I.S.S. believes that dissidents have not met the burden of proof in
terms of a coherent transition plan and strategy to warrant control of the
board," the group said.

Still, if history is a gauge, Mr. Heyman has a chance. He won the 2001 proxy
contest without the support of Institutional Shareholder Services.

But analysts are less confident that Mr. Heyman will win this time around,
unless he considers making a more traditional takeover proposal - with real
money.

"My guess is that management will win this vote," said Paul C. Christopherson,
an analyst at New Vernon Associates in Parsippany, N.J. "In the final analysis,
I don't think Bill Joyce objects to selling the company, but this proposal is
not that," he said, estimating that the company's shares would be worth $13 to
$14 in a true takeover. Shares of Hercules fell 14 cents yesterday, to $10.28.

The timing of the vote is crucial for Mr. Heyman's group, called Hercules
Shareholders' Committee for New Management, because if it does not win this
year, it would have to wait two more years to mount a new campaign for control.
Mr. Heyman's dissident slate of directors is scheduled to stand for re-election
next year.

The clash between Mr. Heyman and Mr. Joyce has become increasingly personal. In
a letter to Hercules shareholders, Mr. Heyman's group recently attacked Mr.
Joyce's record. "We believe that voting for the board's nominees and allowing
Joyce to remain at Hercules for another year is like renewing his driver's
license on the basis of his poor accident record," the letter said. "Please help
end the long nightmare Hercules shareholders and employees have experienced
under Joyce and his predecessors."

Mr. Joyce countered with is own personal attack on Mr. Heyman. "Sam Heyman is
clearly looking out for his own interests, and we urge shareholders to disregard
his self-serving rhetoric and reject the slate of nominees that he has
hand-picked, paid and indemnified," he said in a statement.

Last month, Mr. Gabelli proposed sponsoring a debate between Mr. Heyman and Mr.
Joyce. "I would be privileged to host a debate whereby each side can invite
guests," Mr. Gabelli said in a filing with the Securities and Exchange
Commission. "I will serve as moderator. May the better side win. Clearly, if one
side accepts and the other doesn't, I will certainly view this as an element in
how we would instruct our clients to vote their shares."

Mr. Heyman accepted the invitation; Mr. Joyce declined, though he is planning to
make his own private presentation to Mr. Gabelli and his investors next
Thursday.

Last time around, Mr. Gabelli supported Mr. Heyman.

Copyright 2003 by THE NEW YORK TIMES COMPANY. Reprinted for web use with
permission. Reprinted by Scoop ReprintSource 1-800-767-3263