Friday, April 28.

**MORNING PRAYERS, Rev. Dr. Alexander Mann. 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.

Last day for receiving names of competitors for the Bolyston Prizes for Elocution.

*LECTURE. "The Theory of Electrolytic Dissociation." Professor Svante A. Arrhenius. Boylston 7, 12 M. Open to members of the University and of Radcliffe College.

**LECTURE. "The Structure of Mathematical and Inductive Systems." V. Dr. Karl Schmidt. Emerson F, 4.30 P. M.

*ZOOLOGICAL CLUB. "The Purpose and Principles of Systematic Zoology." Dr. H. L. Clark. Zoological Laboratory, 4th floor, Room 4, 4.45 P. M.

**ENGINEERING SOCIETY. "The Engineer as an Economist." Mr. C. J. H. Woodbury, Consulting Engineer., Pierce 110, 8 P. M.