TOTAL ENROLLMENT AT THE START of the second semester February 16 was 2,829 as compared with a record-breaking 3,001 last fall. The difference is attributable to the 139 seniors who completed their courses, the 56 men either suspended or separated for scholastic deficiencies, and those who left college for other reasons. Forty-three returning veterans and ten non-veterans were accepted for admission. Of the total enrollment, 2,594 are undergraduates and the remainder are graduate students at Tuck, Thayer and the Medical School.