Thursday, March 17.

*MORNING PRAYERS. Rev. Albert Parker Fitch. Appleton Chapel, 8.45 A. M.

*SUPPLEMENTARY LECTURE IN MATHEMATICS H. "Mortality Tables and Life Insurance." Professor J. L. Coolidge. Sever 24, 10 A. M.

*LECTURE. "The Principles of Immunology and their Applicability to Diagnosis and Therapy." VI. Dr. F. P. Gay. Lecture Room, Building E, Medical School, Longwood avenue, Boston, 3 P. M. Open to members of the University and to physicians.

**CERCLE FRANCAIS LECTURES. III. "L'essence de la religion." M. Emile Boutroux. New Lecture Hall, 4 P. M.

*ZOOLOGICAL CLUB. "The Introduction of a European Bark-beetle, Scolytus Multistriatus, into Massachusetts." Mr. J. W. Chapman. Zoological Laboratory, 4th floor, Room 4, 4.45 P. M.