The lecture will be followed by a discussion of problems to be announced on the bulletin board.

Open to all members of the University.

Faculty of Arts and Sciences. University 5, 4 p. m.

Geological Conference. Mr. W. J. Henderson, "Iron Ores of the United States"; Mr. G. S. Miller, "Notes on Acervularia"; Mr. H. Kennedy, "Theories of Origin of the Roxbury Conglomerate"; Mr. H. Landes, "Rock Collection in New Jersey." Geological Laboratory, 7.45 p. m.

22. WEDNESDAY.Divinity School. Debate. Divinity Library, 4.30 p. m.

Lecture. Morphogenesis. I. Earlier Theories of Generation, Growth, and Heredity. Mr. C. B. Davenport. Lecture Room, Zoological Museum (5th floor), 4.30 p. m.

Lecture. Morphogenesis. I. Earlier Theories of Generation, Growth, and Heredity. Mr. C. B. Davenport. Lecture Room, Zoological Museum (5th floor), 4.30 p. m.

Open to persons interested in theoretical biology.

Modern Language Conference. The authorship of Aucassin et Nicolete. Mr. henckels. - Burger and the English ballad. Mr. C. H. Page. Sever 2, 7.30 p. m.

Open to all students in Modern Language courses.

Lecture. The Solar System. Professor Searle. Sever 11, 7.30 p. m.

Open to the public.

23. THURSDAY.English 6. Oral Debate, Harvard 6, 3.30 p. m.