Tuesday, April 12.

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

*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.