NALCO CHEMICAL CO

Q: Sep 30 1999

Q: Jun 30 1999

Q: Mar 31 1999

FY: Dec 31 1998

FY: Dec 31 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: Mar 31 1998

FY: Dec 31 1997

Q: Sep 30 1997

Q: Jun 30 1997

Q: Mar 31 1997

FY: Dec 31 1996

Q: Nov 14 1996

Q: Aug 14 1996

Q: May 13 1996

FY: Apr 1 1996

Q: Sep 30 1995

Q: Aug 14 1995

Q: May 10 1995

1,7

1,7

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

No description available

Certification of termination of registration of a class of securities (Section 12(b))

Registration of Securities on Exchange (amendment)

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration of Securities on Exchange

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

No description available

No description available

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

AMVESCAP PLC \GA\

DODGE & COX

BERNSTEIN SANFORD C & CO INC

BERNSTEIN SANFORD C & CO INC

AMVESCAP PLC \GA\

FMR CORP

NALCO CHEMICAL CO

H2O ACQUISITION CO

H2O ACQUISITION CO

H2O ACQUISITION CO

FMR CORP

H2O ACQUISITION CO

H2O ACQUISITION CO

H2O ACQUISITION CO

H2O ACQUISITION CO

SUEZ LYONNAISE DES EAUX

NALCO CHEMICAL CO

SUEZ LYONNAISE DES EAUX

H2O ACQUISITION CO

NALCO CHEMICAL CO

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)