CALENDAR.

MR. BKIGGS, LECTURE.-Sever 11, 11 A. M.

SOPH. THEME III. RETURNED.-Sever 1, 3, 5, at 2 P. M.

MATHEMATICAL SEMINAR.-University 19, 4 P. M.

HARVARD PHILOSOPHICAL SOCIETY.-Sever 11, 7.30. P. M.