Tuesday, March 21.

**MORNING PRAYERS. Rev. Albert Parker Fitch '00, D.D., President of the Andover Theological Seminary. Appleton Chapel, 8.45 A. M. The University preacher may be found at Wadsworth House 1 daily from 9 to 11 o'clock in the morning.

FACULTY OF ARTS AND SCIENCES. Meeting at University 5, 4 P. M.

*LECTURE. "Geology of Fuels, Fluxes, and Refractory Materials." VIII. Professor Graton. Rotch Building, 8 A. M.

BUSSEY SEMINAR. "Sex-Limited Heredity." Professor W. E. Castle. Bussey Institution, 3 P. M.

*LECTURE. "The Philosophy of Pure Experience of Richard Avenarius. V. The Abolition of Subjectivity." Dr. G. C. Cox. Emerson F, 4.30 P. M. Open primarily to students of Harvard University and of Radcliffe College, but other persons may be admitted upon application to the lecturer.

*BOSTON SOCIETY OF MEDICAL SCIENCES. Amphitheatre of Building D. Medical School, Longwood avenue, Boston, 8.15 P. M. Open to members of the University and of the medical profession.