0000350440-98-000020 SC 13G/A 1 19980212 NASD BACOU USA INC 0001006027 3851 050470688 DE 1231 SC 13G/A 34 005-49201 98533277 10 THURBER BLVD SMITHFIELD RI 02917 4012330333 10 THURBER SMITHFIELD RI 02917 SELIGMAN J & W & CO INC /NY/ 0000350440 0000 133043476 NY 1231 SC 13G/A 100 PARK AVENUE - 8TH FLOOR NEW YORK NY 10006 2124880200 100 PARK AVENUE 8TH FLOOR NEW YORK NY 10017 SC 13G/A 1 000035044098000020-001-seq1-sc-13g-a.txt SCHEDULE 13G/A