Saturday, April 6.

FACULTY OF MEDICINE. Meeting at Medical School, Boston, 8 P. M.

**LECTURE. "Some Phases of the Tuberculosis Problem." Dr. Arthur K. Stone. Medical School, Longwood avenue, Boston, 8 P. M.

Sunday, April 7.

**EVENING SERVICE. Rev. Paul Revere Frothingham, of Boston. Appleton Chapel, 7.30 P. M.

**LECTURE. "Vaccines: Their Nature, Preparation and Uses, with special reference to Smallpox Vaccination." Dr. Theobald Smith. Medical School, Longwood avenue, Boston, 4 P. M.

Monday, April 8.

PRESIDENT AND FELLOWS OF HARVARD COLLEGE. Meeting at 50 State street, Boston, 10.30 A. M.

SEMINARY OF AMERICAN INSTITUTIONS. "The Initiative and Influence of the Presidents in Legislation, 1789-1861." Mr. C. F. Abbott. Sever 9, 3.30 P. M.

SEMINARY OF ECONOMICS. "A Journey into the Tobacco-raising Districts of the West and South." Mr. S. O. Martin. University 23, 4.30 P. M.

*PHYSICAL COLLOQUIUM. "Recent Experiments with Roentgen Rays." Mr. J. M. Adams. Jefferson Physical Laboratory, Room 25, 5 P. M.

MODERN LANGUAGE CONFERENCE. "Poe's Use of his Sources in Four Tales." Mr. Armes. "Cupid and Psyche." Mr. Beach. Common Room, Conant Hall, 8 P. M.

**PHILOSOPHICAL CLUB. "Logical Methodeutic. I. Retroduction, or the Framing of Hypotheses." Mr. C. S. Peirce. Emerson B, 8 P. M.

*LAW PRACTICE ASSOCIATION. "Jury Trials." Mr. C. F. Choate, Jr. New Lecture Hall, 8 P. M.

**MENORAH SOCIETY. "Jewish Ideals." Professor R. B. Perry. Emerson D, 8 P. M.