CN BIOSCIENCES INC

Q: Sep 30 1998

Q: Jun 30 1998

Q: May 15 1998

FY: Dec 31 1997

FY: Dec 31 1997

Q: Sep 30 1997

Q: Jun 30 1997

Q: May 14 1997

FY: Dec 31 1996

Q: Nov 14 1996

1,7

5,7

2,7

2,7

2,7

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

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

Prospectus filed under Rule 424(b)(1)

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

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

Prospectus filed under Rule 424(b)(1)

Amended Initial Registration Statement

No description available

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

Definitive Proxy Statement

Definitive Proxy Statement

WARBURG PINCUS INVESTORS LP

PUTNAM INVESTMENTS INC

EM INDUSTRIES INC

EM INDUSTRIES INC

PUTNAM INVESTMENTS INC

EM INDUSTRIES INC

EM INDUSTRIES INC

EM INDUSTRIES INC

CN BIOSCIENCES INC

PUTNAM INVESTMENTS INC

STANDISH AYER & WOOD INC/MA

KAUFMANN FUND INC

PUTNAM INVESTMENTS INC

KAUFMANN FUND INC

ABS MB C-N LTD PARTNESHIP

KAUFMANN FUND INC

WARBURG PINCUS INVESTORS LP

ABS MB C-N LTD PARTNESHIP