Monday, April 11.

*MORNING PRAYERS. Rev. Dr. Francis John McConnell. Appleton Chapel, 8.45 A. M.

PRESIDENT AND FELLOWS OF HARVARD COLLEGE. Meeting at 50 State street, Boston, 10.30 A. M.

*LECTURES. "The Use of Technical Literature by Engineers." I. Mr. George Winthrop Lee, Librarian for Stone & Webster, Boston. Pierce 202, 12 M. Regular exercises for engineering students will be omitted at this hour, since such students are expected to attend. Other students interested, who are free at this hour, are invited to attend.

*SEMINARY OF AMERICAN INSTITUTIONS. "Account of Attempted Colonization of the American Negro." Mr. H. N. Sherwood. Sever 9, 3.30 P. M.

*LECTURES. "Geology of Fuels, Fluxes, and Refractory Materials." IX. Mr. Louis C. Graton. Rotch Building, 4.30 P. M.

*PHYSICAL COLLOQUIUM. "Halley's Comet." Professor Willson. Jefferson Physical Laboratory, Room 24, 5 P. M.

Tuesday, April 12.

*GEOLOGICAL CONFERENCE. "Natural Bridges." Mr. W. Eastman. "The New One-inch Map of England." Mr. N. J. Bond. Review of Tutton's "Crystalline Structure and Chemical Constitution." (Illustrated by Photographs taken on the Cape Cod Excursion). Professor Palache. Mineralogical Lecture Room, 4.30 P. M.

*LECTURES. "Geology of Fuels, Fluxes, and Refractory Materials." X. Mr. Louis C. Graton. Rotch Building, 12 M.

**LECTURES ON SAMARIA. III. "The Harvard Excavations at Samaria in 1909." Professor Lyon. Semitic Museum, 3.30 P. M.

Wednesday, April 13.

BOARD OF OVERSEERS. Meeting at 50 State street, Boston, 11 A. M.

*LECTURES. "The Use of Technical Literature by Engineers." II. Mr. George Winthrop Lee, Librarian for Stone & Webster, Boston. Pierce 202, 12 M. Regular exercises for engineering students will be omitted at this hour, since such students are expected to attend. Other students interested, who are free at this hour, are invited to attend.

**BOTANICAL CLUB. "Some Observations on the Genus Chaetomium." (Illustrated by lantern slides and plates). Mr. A. H. Chivers. University Museum, Room 11, 2d floor, 4.45 P. M.

MATHEMATICAL CLUB. "Some Vital Questions in Analysis." Mr. S. E. Urner. Common Room, Conant Hall, 8 P. M.