All notices for the weekly CRIMSON Calendar must be placed in the notice box in the CRIMSON Office on Fridays before 5 o'clock, marked "For the CRIMSON Calendar."

Sunday, April 28.

10.15.--*Address on "Sex and Manhood," by Dr. F. N. Seerley, of Springfield Training School, in Parlor of Brooks House.

11.00.--**Rev. C. E. Park in Appleton Chapel.

4.00.--**Lecture on "Some Forms of Mental Disease and Methods now employed in their Treatment," by Dr. George T. Tuttle M.D. '78, at the Medical School, Longwood avenue, Boston.

4.00-6.00.--*President and Mrs. Lowell at home to students.

Monday, April 29.

4.30.--Seminary in Economics. "Trade in Naval Stores Between England and Northern Europe in the Sixteenth and Seventeenth Centuries." Lecture by Mr. N. A. Olsen, in Upper Dane.

4.30.--**First Southworth lecture on "The Church and the Social Awakening," by Mr. Robert Archey Woods A. M., in Room A, Andover Seminary Building. Subject--"Nurture: Every Child his Chance."

5.00.--*Physical Colloquium. "Wilson: on a Theory of Spectral Series," by Professor G. W. Pierce A.M. '99, in Room 25, Jefferson Physical Laboratory.

6.00.--*Entries for interclass track games close at Locker Building and at Leavitt & Peirce's.

7.00-8.00. -- Freshman Mandolin Club meeting in Trophy Room of Union.

8.00.--**Menorah Society lecture. "Representative Men of Israel. IV Jedudah Halevi the Poet" by Dr. J. Leonard Levy, of Pittsburgh, Pa., in Emerson J.

9.00.--First Freshman smoker in Dining Room of Union.

Tuesday, April 30.