SECURITIES AND EXCHANGE COMMISSION
                     Washington, D.C.  20549
                                
                                                
                          SCHEDULE 13D
                       ( Amendment No. 2 )
                                
                                                
            Under the Securities Exchange Act of 1934
                                 
                       CHURCH & DWIGHT Co., Inc.       
                        (Name of Issuer)
                                
                        
             Common Stock Par Value $1.00 Per Share     
                (Title of Class and Securities) 
                                
                                                
                           171340102                  
              (CUSIP Number of Class of Securities)
                                                
                                                
                                                
          J. Hamilton Crawford, Jr., Gabelli Funds, Inc.,
     One Corporate Center, Rye, NY 10580-1434 (914) 921-5067
    (Name, Address and Telephone Number of Person Authorized
             to Receive Notices and Communications)
                                
                                                
                        September 29, 1994                        
   
     (Date of Event Which Requires Filing of this Statement)
                                

If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is the subject of this State-
ment because of Rule 13D-1(b)(3) or (4), check the following box: 
                                                        ____     
                                                       /___/ 


Check the following box if a fee is being paid with this State-
ment:
                                                       _____
                                                      /    /

<PAGE>
_________________________________________________________________

CUSIP No. 171340102                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
      Gabelli Funds, Inc.            I.D. No. 13-3056041
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          _____
                                                     /  x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     358,000 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None    (Item 5) 
 OWNED BY EACH REPORTING                :________________________
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     358,000 (Item 5)
                                        :________________________
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None    (Item 5)  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     358,000 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         _____
                                                     /  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      1.83%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      HC
_________________________________________________________________
              *SEE INSTRUCTIONS BEFORE FILLING OUT! 
_____________________________________

CUSIP No. 171340102                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
      GAMCO Investors, Inc.              I.D. No. 13-2951242
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      OO:  Funds of investment advisory clients
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          _____
                                                     /  x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     907,200   (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None 
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER 
                                        :     1,093,000  (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     1,093,000 (Item 5)
_________________________________________________________________

(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      5.60%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      IA
_________________________________________________________________
              *SEE INSTRUCTIONS BEFORE FILLING OUT! 
_______________________________________
CUSIP No. 171340102                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
     S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
     Mario J. Gabelli                  I.D. No. 074-34-7503
_________________________________________________________________ 
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     / x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      USA 
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     None (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     None (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     None (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         _____
                                                     /  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.00%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      IN
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

Item 1.   Security and Issuer
          This Amendment No. 2 to Schedule 13D on   CHURCH & DWIGHT
CO; INC.   , (the "Issuer") is being filed on behalf of the
undersigned to amend the Schedule 13D, as amended (the "Schedule
13D") which was originally filed on December 8, 1993.  Unless
otherwise indicated, all capitalized terms used herein but not
defined herein shall have the same meaning as set forth in the
Schedule 13D.

Item 3.   Source and Amount of Funds or Other Consideration
          All Reporting Persons used an aggregate of approximately
$9,090,552 to purchase its Securities.  GAMCO and GFI used approxi-
mately $5,827,772 and $3,262,750, respectively, of funds that were
provided through the accounts of certain of their investment
advisory clients (and, in the case of some of such accounts at
GAMCO, may be through borrowings from client margin accounts) in
order to purchase the Securities for such clients. 

Item 5.   Interest In Securities Of The Issuer
          (a)  The aggregate number and percentage of Securities to
which this Schedule 13D relates is 1,451,000 shares, representing
7.43% of the 19,534,169 shares outstanding in the Issuer's most
recently filed 10-Q Form dated July 29, 1994. The Reporting Persons
beneficially own those Securities as follows: 

                              Shares of           % of
                              Common              Class of
Name                          Stock               Common  
                                      
GFI:

  As Principal                       0                0.00%
  As Agent                     358,000                1.83%

GAMCO
  As Principal                       0                0.00%
  As Agent                   1,093,000                5.60%

Mario J. Gabelli                     0                0.00%


          Mr. Gabelli is deemed to have beneficial ownership of the
Securities beneficially owned by each of the foregoing persons and
GFI is deemed to have beneficial ownership of the securities owned
beneficially by each of the foregoing persons other than Mr.
Gabelli. 
          (b) Each of the Reporting Persons and Covered Persons has
the sole power to vote or direct the vote and sole power to dispose
or to direct the disposition of the Securities reported for it,
either for its own benefit or for the benefit of its investment
clients or its partners, as the case may be, except that GAMCO
Investors, Inc. does not have authority to vote 185,800 of the
reported shares and except that GFI has sole dispositive and voting
power with respect to the shares of the Issuer held by the The
Gabelli Asset Fund, The Gabelli Equity Trust, Inc., The Gabelli
Growth Fund, The Gabelli Convertible Securities Fund, The Gabelli
Value Fund Inc., The Gabelli Small Cap Growth Fund, The Gabelli
Global Interactive Couch Potato Fund, The Gabelli Global Convert-
ible Securities Fund, Gabelli Gold Fund, Inc., The Gabelli Equity
Income Fund, The Gabelli ABC Fund, and/or The Gabelli Global
Telecommunications Fund so long as the aggregate voting interest of
all joint filers does not exceed 25% of their total voting interest
in the Issuer and in that event, the Proxy Voting Committee of each
Fund (other than The Gabelli Growth Fund) shall respectively vote
that Funds shares, and except that, at any time, the Proxy Voting
Committee of each such Fund may take and exercise in its sole
discretion the entire voting power with respect to the shares held
by such Fund under special circumstances such as regulatory
considerations, and except that the power of Mr. Gabelli and GFI is
indirect with respect to Securities beneficially owned directly by
other Reporting Persons. 

<PAGE>
Signature      
After reasonable 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. 
Dated:    September 30, 1994


                                   MARIO J. GABELLI



                                  By:_____________________________
                                     J. Hamilton Crawford, Jr.
                                     Attorney-in-Fact             
                                                   



                                   GABELLI FUNDS, INC. 

                                

                                   By:_________________________
                                      J. Hamilton Crawford, Jr.
                                      Senior Vice President   
                                      and General Counsel
   

                                                   

                                   GAMCO INVESTORS, INC.  
                                   


                                   By:_________________________
                                      Douglas R. Jamieson  
                                      Chief Operating Officer
                                      and Executive Vice President


<PAGE>
                                                       Schedule I


              Information with Respect to Executive
            Officers and Directors of the Undersigned 

          Schedule I to Schedule 13D is amended, in pertinent
part, as follows:

          The following sets forth as to each of the executive
officers and directors of the undersigned: his name; his business
address; and his present principal occupation or employment and
the name, principal business and address of any corporation or
other organization in which such employment is conducted.  Unless
otherwise specified, the principal employer of each such in-
dividual is Gabelli Funds, Inc., Gabelli & Company, Inc., or
GAMCO Investors, Inc., the business address of each of which is
One Corporate Center, Rye, New York 10580, and each such
individual identified below is a citizen of the United States. 
To the knowledge of the undersigned, during the last five years,
no such person has been convicted in a criminal proceeding
(excluding traffic violations or similar misdemeanors), and no
such person was a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction as a result of
which he was or is subject to a judgment, decree or final order
enjoining future violations of, or prohibiting or mandating
activities subject to, federal or state securities law or finding
any violation with respect to such laws except as reported in
Item 2(d) of this Schedule 13D. 


Gabelli Funds, Inc. 

Directors: 

     Mario J. Gabelli


     Richard B. Black              Chairman of Raster Image
                                   Processing Systems; Chairman
                                   ECRM; Director of Archetype
                                   and Oak Technology; Director
                                   of The Morgan Group, Inc.;
                                   General Partner of KBA Part-  
                                   ners, Parker Plaza
                                   400 Kelby Street,
                                   Fort Lee, NJ 07029

     Charles C. Baum               Chairman, Director and Chief
                                   Executive Officer of The
                                   Morgan Group, Inc.;
                                   Secretary & Treasurer
                                   United Holdings              
                                   2545 Wilkens Avenue
                                   Baltimore, MD  21223

     Dr. Eamon M. Kelly            President
                                   Tulane University
                                   218 Gibson Hall
                                   6823 St. Charles Avenue
                                   New Orleans, LA  70118

Officers:

     Mario J. Gabelli              Chairman, Chief Executive
                                   Officer and Chief Investment
                                   Officer
     

     J. Hamilton Crawford, Jr.     Vice President, Secretary 
                                   and General Counsel 

     Stephen G. Bondi              Vice President - Finance

     Joseph J. Frazzitta           Assistant Secretary


GAMCO Investors, Inc.

Directors:
     Douglas R. Jamieson
     Joseph R. Rindler, Jr.
     Regina Pitaro
     Joseph J. Frazzitta
     William F. Scholz

Officers:
     
     Mario J. Gabelli              Chief Investment Officer

     Douglas R. Jamieson           Chief Operating Officer and
                                   Executive Vice President 

     Joseph J. Frazzitta           Vice President and Chief
                                   Financial Officer
  
     James E. McKee                Vice President, Legal and
                                   Compliance and Assistant
                                   Secretary

     J. Hamilton Crawford, Jr.     Assistant Secretary    



Gabelli Securities, Inc.

Directors:

     Charles C. Baum               See above-Gabelli Funds, Inc.

     Joseph R. Rindler             Managing Director
                                   Gabelli & Company, Inc.
                                   One Corporate Center
                                   Rye, NY  10580

     David Perlmutter              Perlmutter & Associates
                                   200 Park Avenue, Suite 4515
                                   New York, N.Y.  10166

     Stephen G. Bondi              Acting Chief Operating Officer
                                   and Vice President

Advisors:

     Vincent J. Amabile
     Robert Blake

Officers:

     Stephen G. Bondi              Acting Chief Operating Officer
                                   and Vice President

     J. Hamilton Crawford, Jr.     Senior Vice President, 
                                   Assistant Secretary, and
                                   General Counsel

     Erwin I. Mevorah              Vice President - Finance 
                                                      

Gabelli & Company, Inc.

Directors:

     James G. Webster, III         Chairman 

     Charles C. Baum               See above-Gabelli Funds, Inc.

     Joseph J. Frazzitta           Vice President and
                                   Chief Financial Officer

Officers:

     James G. Webster, III         Chairman 

     Joseph J. Frazzitta           Vice President/Finance and
                                   Chief Financial Officer

     Stephen G. Bondi              Vice President 

     J. Hamilton Crawford, Jr.     Vice President  
                                   and General Counsel
     
     Walter K. Walsh               Operations and Compliance
                                   Officer

GLI, Inc.

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.


Officers:

     Mario J. Gabelli              Chairman and Chief Investment
                                   Officer

     Stephen G. Bondi              Vice President

     J. Hamilton Crawford, Jr.     Assistant Secretary  


Gabelli Associates Limited

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.

     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British        
                                   WestIndies

     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British             
                                   WestIndies
     
Officers:

     Mario J. Gabelli              Chief Investment Officer

     Kevin Bromley                 Vice President, Treasurer and
                                   Assistant Secretary

     Sandra Wight                  Secretary and Assistant Treasurer


Gabelli International Limited

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.
   
     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British West Indies

Officers:


     Kevin Bromley                 Vice President, Treasurer, and      
                                   Assistant Secretary                 
                                   MeesPierson (Cayman) Limited
                                   British American Centre  
                                   Dr. Roy's Drive- Phase 3   
                                   Georgetown, Grand Cayman    
                                   Cayman Islands, British West Indies

     Sandra Wight                  Secretary and Assistant Treasurer
                                   Assistant Secretary                 
                                   MeesPierson (Cayman) Limited
                                   British American Centre  
                                   Dr. Roy's Drive- Phase 3   
                                   Georgetown, Grand Cayman    
                                   Cayman Islands, British West Indies

Lynch Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

     Paul J. Evanson               Chief Financial Officer 
                                   FPL Group, Inc.
                                   P.O Box 14000
                                   700 Universe Blvd.
                                   Juno Beach, Fl 33408

     Bradley J. Bell               Vice President & Treasurer
                                   Whirlpool Corp.
                                   Administrative Center
                                   Benton Harbor, MI  49022

     Morris Berkowitz              Business Consultant
                                   163-43 Willets Point Blvd.
                                   Whitestone, NY 11357


     Richard J. Boyle              Chairman, The Boyle Group
                                   6110 Blue Circle Drive  
                                   Suite 250 
                                   Minnetonka, MN 55343
  

     Mario J. Gabelli              See above-Gabelli Funds, Inc.

     Robert C. Kolodny, M.D.       Medical Director and Chairman
                                   of the Board of The Behavorial
                                   Medicine Institute
                                   885 Oenoke Ridge Road
                                   New Canaan, CT  06840


     Paul Woolard                  Business Consultant
                                   116 East 68th Street
                                   New York, NY 10021

     E. Val Cerutti                Business Consultant          
                                   Cerutti Consultants 
                                   227 McLain Street
                                   Mount Kisco, NY   10549


Officers:

     Mario J. Gabelli              Chairman and Chief Executive   
                                   Officer

     Philip J. Lombardo            Office of the President

     Michael J. Small              Office of the President

     Joseph H. Epel                Treasurer

     Robert E. Dolan               Chief Financial Officer 

     Carmine Ceraolo               Assistant Controller

     Robert A. Hurwich             Vice President-Administration,
                                   Secretary and General Counsel

     Mary J. Carroll               Administrative Assistant 


Safety Railway Service Corporation
251 Welton Street
Hamden, CT 06517

Directors:

     Joseph P. Rhein               Chairman                
                                   241 McClenaghan Mill Road
                                   Wynnewood, PA 19096
                                   
     William F. Bullis             Safety Railway Service Corporation
                                   265 Great Neck Road
                                   Great Neck, NY 11021


Officers:

     Robert E. Dolan               Controller

     Joseph H. Epel                Treasurer and Assistant
                                   Secretary


     James W. Toman                Assistant Secretary 

Entoleter, Inc.
251 Welton Street
Hamden, CT  06517

Directors:

     Joseph P. Rhein               See above-Safety Railway

     William F. Bullis             See above-Safety Railway

Officers:

     John M. Martin                President

     James W. Toman                Chief Financial Officer

     Joseph H. Epel                Treasurer and Secretary

     Robert E. Dolan               Controller


Western New Mexico Telephone Company
314 Yankee Street
Silver City, NM  08062

Directors:

     Jack C. Keen                  Chairman

     Jack W. Keen                  President

     Dr. Brian E. Gordon           Vice President

     Mary Beth Baxter              Secretary & Treasurer

     Robert E. Dolan               See above-Lynch Corporation

     Joseph H. Epel                See above-Lynch Corporation

     Carmine Ceraolo               See above-Lynch Corporation

     Mary J. Carroll               See above-Lynch Corporation


Officers:

     Jack C. Keen                  Chairman of the Board

     Jack W. Keen                  President

     Jack L. Bentley               Executive Vice President

     Dr. Brian E. Gordon           Vice President

     Charles M. Baxter             Sr. Vice President-Operations
     
     James M. Bucher               Asst. Vice President-         
                                   Operations 

     Mary Beth Baxter              Secretary & Treasurer

     Joseph H. Epel                Assistant Treasurer


Inter-Community Telephone Company
P.O. Box A
Nome, ND  58062

Directors:

     Mary J. Carroll               See above-Lynch Corporation

     Carmine P. Ceraolo            See above-Lynch Corporation
                                   
     Robert E. Dolan               See above-Lynch Corporation

     Joseph H. Epel                See above-Lynch Corporation

     Leone A. Nilsen               President

     Roger J. Nilsen               P.O. Box 146
                                   Hannaford, ND 58448

     Duane A. Plecity              Secretary

     Harry B. Snyder               P.O. Box 131
                                   Buffalo, ND  58011

     Robert Snyder                 200 Broadway South
                                   Buffalo, ND 58011

Officers:

     Leone A. Nilsen               President
     
     Robert Snyder                 Vice President 
     
     Duane A. Plecity              Secretary
     
     Harry B. Snyder               Treasurer

     Joseph H. Epel                Assistant Treasurer











                      SCHEDULE II                                 
          INFORMATION WITH RESPECT TO  TRANSACTIONS 
         EFFECTED DURING THE PAST SIXTY DAYS OR  SINCE 
           THE MOST RECENT FILING ON SCHEDULE 13D (1)             
                                                                  
                              SHARES 
                              PURCHASED         AVERAGE   
             DATE             SOLD(-)           PRICE(2)          
                                                                  
COMMON STOCK-CHURCH & DWIGHT CO                                   
                                                                  
GABELLI FUNDS, INC.                                               
                                                                  
THE GABELLI SMALL CAP GROWTH FUND                                 
                                                                  
             9/06/94            2,000-           25.2500          
                                                                  
GAMCO INVESTORS, INC.                                             
                                                                  
             9/29/94           30,000            22.2271          
                                                                  
             9/28/94            2,500-           24.2000          
                                                                  
             9/26/94            1,500-           23.5000          
                                                                  
             9/22/94            2,000-           23.8750          
                                                                  
             9/21/94              500-           24.2500          
                                                                  
             9/15/94            1,500-           25.2500          
                                                                  
             8/31/94              500            25.3750          
                                                                  
             8/30/94              200            25.1250          
                                                                  
             8/17/94            1,000            24.8750          
                                                                  
             8/15/94            1,500            25.0000          
                                                                  
             7/29/94            1,000            23.1250          
                                                                  
(1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED    
    ON THE NY STOCK EXCHANGE.                                     
(2) PRICE EXCLUDES COMMISSION.