Exhibit 99.1



                     HERCULES AND BETZDEARBORN TO MERGE
               CREATING GLOBAL LEADER IN SPECIALTY CHEMICALS
  
    Combination of Complementary Paper Chemicals Businesses Will Provide
 Most Complete Offering Of Products and Services To Pulp and Paper Industry
  
Will Also Be Leader in Chemical Treatment of Water and Industrial Processes
  
  
  
  
      WILMINGTON, DE, AND TREVOSE, PA, JULY 30, 1998 -- Hercules Incorporated
 (NYSE: HPC) and BetzDearborn Inc. (NYSE: BTL) today announced they have
 signed a definitive merger agreement under which Hercules will acquire all
 BetzDearborn shares for $72 per share in cash, or a total of approximately
 $2.4 billion.  Hercules will also assume approximately $700 million in
 BetzDearborn debt.   
  
      The strategic combination of these leading specialty chemicals
 companies will create a premier paper chemical business with the world's
 most complete offering of products and services for the pulp and paper
 industry.  In addition, BetzDearborn's leading water and industrial process
 treatment business will give Hercules another leading franchise in
 specialty chemicals.   
  
      The new business enterprise, a global specialty chemical company with
 pro forma combined 1997 revenues of $3.5 billion, will operate under the
 Hercules name and will be headquartered in Wilmington, Delaware.  The water
 and industrial process treatment businesses, excluding paper process, will
 continue to operate under the BetzDearborn name.   
  
      The one-step cash merger transaction, which is subject to approval of
 BetzDearborn shareholders and customary conditions including regulatory
 approvals, is expected to close in the fourth quarter of 1998.  A committed
 bank credit facility underwritten by NationsBank will be used to finance
 the acquisition and refinance existing debt.  Hercules expects to maintain
 an investment grade credit rating.  It also expects the transaction to be
 accretive to cash earnings in the first year and to reported earnings per
 share in the second year, with increasing levels of accretion thereafter.   
  
      Although the transaction is driven more by growth opportunities than
 cost savings, both companies agree they can capture a minimum of $100
 million in synergies.  Hercules plans to retain BetzDearborn's strong sales
 and marketing force, and talented employees in all parts of both companies
 will have significant opportunities for growth and advancement.   
  
      "This transaction is a superb combination of two complementary
 businesses that will create the world's premier paper chemical business and
 also give us a new franchise in chemical treatment of water and industrial
 process systems," said R. Keith Elliott, Hercules chairman and chief
 executive officer.  "On the paper chemical side, BetzDearborn is a world
 leader in process chemicals with strengths in customer service and support. 
 By combining their expertise with our leading position in functional
 chemicals and low-cost manufacturing capabilities, we will be better
 positioned to meet paper manufacturers' growing demand for integrated
 services and innovative, cost-effective solutions.  We share strong
 technology skills, similar chemistries and a focus on reducing operating
 costs for customers, which will create new growth opportunities for the
 combination." 
  
      Elliott added, "Hercules is committed to its shareholders and creating
 value for them.  Growth is a key part of that commitment.  Acquisitions can
 help provide that growth, but require a disciplined approach.  Like our
 recent acquisitions of Citrus Colloids, Houghton's paper chemicals
 business, and FiberVisions, this transaction meets or exceeds our stated
 criteria of fitting well with our core franchises, producing significant
 accretion in both cash earnings and reported earnings, and achieving an
 internal rate of return that is at least a 50% premium to the cost of
 capital." 
  
      William R. Cook, BetzDearborn chairman, president and chief executive
 officer, said: "This strategic merger is an extraordinarily good business
 fit for both our companies.  We are bringing together the best attributes
 of BetzDearborn and Hercules to create a powerful new specialty chemicals
 company with the technology, financial and manufacturing strength to
 achieve strong growth in today's highly competitive global marketplace. 
 The merger will create value for our shareholders, provide valuable
 benefits to our customers and provide the vast majority of our highly
 talented and dedicated employees with significant opportunities for career
 growth and advancement." 
  
      Hercules will be led by Elliott and Cook as co-CEOs, with Elliott
 serving as chairman of the board and Cook as vice chairman.  Other senior
 managers of the combined company will be: Vincent J. Corbo, Hercules
 president and chief operating officer and a director, and George MacKenzie,
 Jr., Hercules senior vice president and chief financial officer, who will
 continue in these positions; Dominick W. DiDonna, senior vice president
 international and general manager of paper technology at Hercules, who will
 be senior vice president of the combined paper business; and Larry V.
 Rankin, executive vice president at BetzDearborn and chairman of
 BetzDearborn Canada, who will be senior vice president of the BetzDearborn
 water treatment and industrial process business.   
  
      Cook and three other BetzDearborn directors will join the Hercules
 Board, increasing its size from 10 to 14 members.   
  
      Three teams will develop integration plans for implementation
 immediately after closing.  These integration teams, led by DiDonna for the
 paper business, Rankin for the water treatment and industrial process
 business, and MacKenzie for corporate functions, will all report to Corbo,
 who will spearhead the effort to combine the strengths and resources of
 both companies.   
  
      Warburg Dillion Read is serving as financial advisor to Hercules and
 J.P. Morgan is serving as financial advisor to BetzDearborn.   
  
      BetzDearborn, headquartered in Trevose, Pennsylvania, had 1997 sales
 of $1.3 billion.  It is the world's premier supplier of engineered chemical
 treatment programs for influent water, boiler, cooling, wastewater and
 process systems in industrial, commercial and institutional establishments. 
 The company serves customers in over 90 countries with a global workforce
 of 6,400 employees, 31 production plants worldwide, five research and
 development centers and regional centers in North America, Europe, Latin
 America and Asia Pacific.  For more information, visit the BetzDearborn
 website at www.betzdearborn.com.   
  
      Hercules manufactures chemical specialty products for a variety of
 markets worldwide.  Its businesses include Aqualon, FiberVisions, Food
 Gums, Paper Technology and Resins.  With shareholder value as its guiding
 focus, the corporation concentrates on value-added, high-performance
 products where it has a market or technology advantage.  Hercules, with
 $1.9 billion in 1997 sales, has approximately 7,000 employees, 49
 manufacturing plants, two major research centers and eight applications
 laboratories.  For more information, visit the Hercules website at
 www.herc.com.   
  

                                   # # # 
  
 Contacts: 
  
 Hercules 
 Media: Claire LaMar Carey (302) 594-6030, ccarey@herc.com 
 Investors: Bob Gallant (302) 594-5254, rgallant@herc.com 
  
 BetzDearborn 
 Media: R.J. Palangio (215) 953-2417 
 Investors: W.T. Drury (215) 953-2355 
  
  
 This news release includes forward-looking statements, as defined in the
 Private Securities Litigation Reform Act of 1995, reflecting management's
 current analysis and expectations, based on reasonable assumptions. 
 Results could differ materially depending on such factors as business
 climate, economic and competitive uncertainties, higher manufacturing
 costs, reduced level of customer orders, risks in developing new products
 and technologies, environmental and safety regulations and clean-up costs,
 foreign exchange rates, and adverse changes in economic and political
 climates around the world.  As appropriate, additional factors are
 contained in reports filed with the Securities and Exchange Commission. 
 This paragraph is included to provide safe harbor for forwarding-looking
 statements, which are not required to be publicly revised as circumstances
 change.