20 ANNUAL REPORT OF THE 



Technology and by Dr. W. P. Haynes of Wellesley College, 

 Professor Atwood gave the summer course, S6, taken by 28 men. 

 The work was done in southwestern Colorado in the region of the 

 San Juan Mountains. It is a pleasure to note that most of the 

 men of that party, who are now in residence at Harvard, are 

 registered for additional work in this Department. Some of them 

 are proving to be of valuable assistance in connection with labora- 

 tory work in elementary courses. 



Professor Atwood has continued his research studies on the 

 physiography of the San Juan Mountains, under the auspices of 

 the U. S. Geological Survey, and has given special attention to 

 the geology associated with the defective reservoirs in that district. 

 Under his direction, research work has been carried on by gradu- 

 ate students on the Lower St. Lawrence Valley, the mountain 

 ranges of Montana, and also in the study of the glacial geology of 

 Boston and vicinity. 



Mr. Roderick Peattie has selected, with approval, for his Ph.D. 

 thesis, an investigation on The geographic factors in the settle- 

 ment and life of the Lower St. Lawrence Valley, and is conduct- 

 ing his researches under the direction of Professor Atwood. 



Professor Ward gave the following courses, Meteorology 1, 2, 3, 

 4 and 20. At the request of Dr. R. P. Strong, Professor Ward 

 gave, for the first time, a series of lectures on Tropical Climatology 

 to the students in the School of Tropical Medicine. In the re- 

 search course, (Meteorology 20), Mr. C. C. Chu made a study of 

 floods and flood forecasts, in preparation for work which he expects 

 to do when he returns to China; Mr. S. P. Robinson investigated 

 the climatology of the Hawaiian Islands with special reference to 

 the cultivation of cotton in those islands, and Mr. L. B. R. Briggs, 

 Jr., made a study of the cyclonic distribution of rainfall in the 

 United States. During the winter, Professor Ward completed a 

 paper on the thunderstorms of the United States as climatic 

 phenomena, which was presented before the Second Pan- American 

 Scientific Congress, and one on the prevailing winds of the United 

 States, which was read at the winter meeting of the Association 

 of American Geographers. A paper on the tornadoes of the 

 United States is ready for publication. The summer was spent 

 in further work on a book on the climatology of the United States. 



The work of the Blue Hill Observatory, directed by Professor 

 McAdie, is described in the Report of the President. 



