0000927016-99-003089 424B1 1 19990824 HOLOGIC INC 0000859737 3844 042902449 DE 0930 424B1 33 333-84795 99698353 35 CROSBY DRIVE BEDFORD MA 01730 7819997300 590 LINCOLN STREET WALTHAM MA 02154 424B1 1 000092701699003089-001-seq1-424b1.txt PROSPECTUS