PHILOSOPHY 20g. Seminary in the History of Science. History of the Physical Sciences. Thursday, 7.30-9.30 P. M. Dr. GEORGE SARTON.

Analysis and discussion of the fundamental facts and theories of the mathematical and physical sciences in the light of their history. Comparative study of the main sources. No advanced scientific knowledge is required, the idea being to study each question from its very beginning.

MILITARY SCIENCE AND TACTIC: 1. Theoretical and practical military training. Tuesday, Thursday, at 1.30, and a third hour at the convenience of the instructors and students. Captain CONSTANT CORDIER, U. S. A., and others.

This course is open to, and may be counted for a degree by, all physically fit students of Harvard College, excepting Freshmen. Freshmen cannot take this course, unless with the consent of Captain CORDIER and the approval of the Faculty. Graduate Students may take the course, but it will not be counted for a degree.

Other Changes in Courses.

SEMITIC LANGUAGES AND HISTORY 15 hf. Political and Social History of the Mohammedans to the Conquest of Egypt by Selim I, will be given in 1916-17 Semitic 16 hf. will not be given.

LATIN 12, History of Latin Literature, will be given Tuesday, Thursday, Saturday, at 10, instead of at 12.

ENGLISH E, Special Instruction in English for Foreign Students will be given Tuesday, Saturday, at 12, instead of Tuesday, Thursday.

*ENGLISH 5. English Composition (advanced course). With the consent of the instructor, this course may be taken as a half-course in either half-year.

ENGLISH 31, English Composition, will be given by Dr. ODELL SHEPARD, instead of Dr. BERNRAUM.

MUSIC 4b hf., DIIndy, Faure, Debussy, will be given Tuesday, Thursday, at 12, instead of Monday, Wednesday, at 2.30.

CHEMISTRY 2, 22, 16, 17, and 201 will be given by Dr. J. B. CONANT, instead of Dr. ROGER ADAMS.

ASTRONOMY 2b hf., Practical Astronomy, will be given Tuesday, Thursday, Saturday, at 10, instead of at 9.

ASTRONOMY 2b hf., Practical Astronomy will be given Tuesday, Thursday, Saturday, at 12, instead of at 10.

HISTORY 56 hf., South America, will be given in the second half-year instead of in the first.