**St. Paul's Society. Mr. B. S. Hurlbut. Brooks House, 7 p. m.

**Sophomore Debating Club. Debate. Sever 11, 7 p. m. Question: "Resolved, That the United States should purchase the Danish West Indies." Affirmative: Hammerslough's Camp. -- Negative: Carleton's Camp.

**Geological Conference. Paper: The Orography of Asia. Prince Kropotkin. Harvard 1, 8 p. m.

Thursday, March 21.

*Vesper Service. Appleton Chapel, 5 p. m.

**Harvard Mining Club. The Future of the Mining Industry. (Special attention will be given to methods of concentration.) Professor Shaler. Rotch Building, 8 p. m.

**Lectures on Electrical Conduction in Gases. VI. The Velocity of Ions in the Canal and Cathode Rays. Dr. H. H. Brown. Jefferson Physical Laboratory, Room 25, 8 p. m.

**Educational Conference. The Cambridge Manual Training School. Principal Charles H. Morse. Sever 17, 8 p. m.

Friday, March 22

Afternoon Tea. Brooks House, 4 to 6 p. m.

Appleton Chapel--Sunday Evenings.

Mar. 17.--Rev. S. Parkes Cadman, D.D., of New York.

Mar. 24 and Mar. 31.--Rev. Professor George F. Moore, D.D., of Andover.

Apr. 7.--Rev. Francis G. Peabody, D.D., of Cambridge.

Apr. 14.--Recess.

Apr. 21.--Rev. Floyd W. Tomkins, of Philadelphia.

Apr. 28.--Rev. Endicott Peabody, of Groton.

May 5 and May 12.--Rev. Paul Revere Frothingham, of Boston.

May 19.--Rev. Alexander Mackennal, D.D., of Bowdon, England.

May 26.--Rev. H. P. Dewey, of Brooklyn.