Today.

1.00--Senior and Freshman picture on steps of Widener.

3.30--Harvard Zoological Club. "The Relation of Microorganisms to Insects." Mr. J. P. Baumberger. Zoological Laboratory, Room 46.

5.00--Physical Colloquium. "On the Determination of "h" by Means of X Rays." Professor Duane and Professor Frederic C. Blake, of Ohio State University. Jefferson Physical Laboratory, Room 3.

8.00--Modern Language Conference. "New Light on Keats." Professor Neilson. Common Room, Conant Hall.

8.00--Lowell Institute lecture. "The History of Choral Music." V. "Handel." Dr. A. T. Davison '06, Huntington Hall, Boylston street, Boston.

Tuesday, April 3.

4.00--Meeting of Faculty of Arts and Sciences at University 5.

5.00--Lowell Institute lecture. "The History of Choral Music." V. "Handel." Dr. A. T. Davison '06, Huntington Hall, Boylston street, Boston.

8.00--Dudleian lecture. "Religion as a Way to Reality." The Reverend William L. Sullivan, All-Souls' Church, New York City. New Lecture Hall.

8.00--Dramatic Club spring productions Hasty Pudding Theatre.

8.15--Cutter lecture on Preventive Medicine and Hygiene. III. "A Discussion of Poliomyelitis in the Light of Recent Observations." Dr. Ludwig Hektoen, director of the Memorial Institute for Infections Diseases, Chicago. Amphitheatre of Building E, Medical School, Longwood avenue, Boston.

Wednesday, April 4.

8.00--Dramatic Club spring productions. Hasty Pudding Club Theatre.

Thursday, April 5.

8.00-4.00--Election of Union officers.

6.15--Social Service dinner and conference in Trophy Room of Union.

8.00--Lowell Institute lecture. "The History of Choral Music." VI. "The 19th Century Composers." Dr. A. T. Davison '06. Huntington Hall, Boylston street, Boston.

8.00--Dramatic Club spring productions. Copley Hall, Boston.

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

Friday, April 6.

5.00--Lowell Institute lecture. "The History of Choral Music." VI. "The 19th Century Composers." Dr. A. T. Davison '06. Huntington Hall, Boylston street, Boston.

8.00--Intercollegiate Fencing Association Championships. Hotel Astor, New York City.

Saturday, April 7.

Drawings due for Appleton Fellowship in Architecture.

Last day for making spread applications.

3.00 and 8.00--Intercollegiate Fencing Association Championships. Hotel Astor, New York City.

8.00--University Musical Clubs concert in Brattle Hall.