3.00.--Second Tennis vs. Tufts at Medford.

3.00.--1919 Tennis vs. Dartmouth 1919 on Soldiers Field.

3.00.--Invitation Regatta on Charles River Basin.

4.00.--Spring Handicap Track Meet on Soldiers Field.

8.00.--Musical Clubs Concert at Newton-ville.

Friday, May 19.

Senior Picnic.

Meeting of Associated Harvard Clubs in Pittsburgh.

Applications for I. C. A. A. A. A. tickets due.

2.30.--Lectures on "Military Medicine." VI. "Sanitary Tactics and First-Aid," by Major F. E. Jones, M.V.M., in Amphitheatre of Building D, Medical School, Boston.

3.00.--Tennis vs. Pennsylvania on Divinity Field.

4.55.--Harvard Zoological Club. "The Weak Acids of Sea Water and their Biological Significance," by Mr. E. J. Cohn in Room 46, Zoological Laboratory.

8.00.--Musical Clubs Concert at Chestnut Hill.

8.00.--1919 Musical Clubs Concert in Eliot Hall, Jamaica Plain.

Saturday, May 20.