4.30.--**Lectures on "Giotto and his Followers." XII. "Andrea Arcagna and his Brothers." Dr. O. Siren, in the lecture room, Fogg Art Museum.
4.55.--*Zoological Club. Review: "Geotropism in Snails." Mr. E. F. Adolf: "Reactions of Drosophila to Air Currents, Gravity, and Centrifugation." Mr. W. H. Cole; "Light Reactions of Paramecium." Mr. A. C. Walton, in Zoological Laboratory, Room 46.
7.30.--*Physical Conference. "Selected Topics in Sound." I. Prof. Sabine, in Jefferson Physical Laboratory, Room 3.
Saturday, February 26.
Last day in the second half-year upon which undergraduates, Special Students, Unclassified, and Out-of-Course Students in Harvard College may change, without liability for a fee of $5.00, any course of study beginning in the second half-year.
Hockey team vs. Yale, at New Haven.