*ORGAN RECITAL. Mr. J. A. Wilson, assisted by Mr. F. E. Kendrie. Andover Chapel, 8 P. M.

HISTORIC OPERATIC CONCERTS. IV. Professor W. R. Spalding, Lecturer; Miss Elizabeth Amsden, Miss Bernice Fisher, Mme. Marie Louise Martini, Mr. Rafaelo Diaz, Signor Alfredo Ramella, Signor Rodolpho Fornari, Signor Jose Mardones, Soloists. Sanders Theatre, 8.15 P. M. Admission tickets to this concert, at fifty cents each, will be on sale at the Co-operative Main Store, Harvard Square, on Monday, February 12.

Thursday, February 15.

**LECTURES ON THE SOURCES OF RELIGIOUS INSIGHT. III. "The Office of the Reason," Professor Royce. Andover Chapel, 4.30 P. M.

**HARVARD ZOOLOGICAL CLUB. "Review of Davenport's 'Eugenics,'" Mr. H. S. Davis. Zoological Lecture Room, 4th floor, Room 4, 4.45 P. M.

**HARVARD DIVINITY SCHOOL AND ANDOVER THEOLOGICAL SEMINARY. Preaching Service. Mr. F. W. Baldwin, Jr. Andover Chapel, 5 P. M.

*HARVARD ENGINEERING SOCIETY. "A Low Pressure Turbine-Reciprocating Engine Combination, with Data on the Economical Production of Vacuum." Mr. P. A. Merriam and Mr. H. H. R. Spofford. Common Room, Conant Hall, 8 P. M.

*EXPOSITION OF CHAMBER MUSIC. Mr. Whiting. New Lecture Hall, 8.15 P. M. Open only to officers and students of the University.

Friday, February 16.

*UNIVERSITY TEA. Phillips Brooks House, 4 to 6 P. M. All members of the University are cordially invited.

*CLASSICAL CONFERENCE. "Homeric Characters in Sophocles." Mr. S. B. Luce.--"The Character of Odysseus in Sophocles." Mr. G. H. Gifford.--"The Development of the Character of the Protagonist in Sophocles." Mr. J. B. Munn. Harvard 1, 4.30 P. M.

*HARVARD MATHEMATICAL CLUB. "The Four-Color Problem." Professor Oswald Veblen, of Princeton University. Common Room, Conant Hall, 8 P. M.

**LECTURES ON THE SOURCES OF RELIGIOUS INSIGHT. IV. "The World and the Will." Professor Royce. Andover Chapel, 4.30 P. M