20 ANNUAL REPORT OF THE 



another year of complete records to the already long period of 

 observations. Mr. A. L. Wells, who had been connected with the 

 Blue Hill Observatory staff for several years, has continued as 

 Observer in charge. Mr. C. F. Brooks, a graduate student in 

 Meteorology, has been Research assistant at the Observatory. 

 With the coming of the new Director, Professor McAdie, and with 

 the close affiliation between the Department and the Observatory, 

 made possible by the bequest of the late Professor Rotch and the 

 further assistance given by Mrs. Rotch, the University will be able 

 to offer its students unusually favorable opportunities for practical 

 meteorological work. Professor McAdie will bring to his work here 

 not only his experience as a teacher of meteorology but also the 

 practical knowledge gained during many years of service in the 

 Weather Bureau. The Department will be greatly strengthened 

 by the addition of Professor McAdie to its staff. 



Professor Daly assumed charge of Geology 4 (113 students), 

 opened a new half course on the Geology of the igneous rocks (6 

 graduate students), collaborated in the research course 20c, and 

 acted as Chairman of the Department during the year. His other 

 work of the year is recorded in the Report of the Sturgis Hooper 

 Professor. 



•Prof. J. B. Woodworth gave the instruction in the following 

 courses : — 



Geology 5, (47 students); Geology 8 (6 students); Geology 16 

 (5 students); Radcliffe College, Geology 4 (14 students); Rad- 

 cliffe College, Geology 8 (2 students). In Geology 20c, research 

 course, Mr. Foye made a resurvey of certain faults in the Boston 

 area, in the preparation of a special map designed to show the 

 presumed points of yielding to seismic stress. Mr. Foye also 

 carried out certain experiments in seismology and designed and 

 superintended the manufacture of a model horizontal pendulum 

 for demonstration in the laboratory. Mr. D. C. Barton continued 

 his studies on the origin, distribution, and interpretation of arkose. 

 In June he set out, with the aid of a grant from the Sheldon fund, 

 upon a field study of the described localities of arkose in the British 

 Islands, France, and Egypt. Mr. Donald B. MacMillan in the 

 fall of 1912 was given some instruction in the recognition of glacial 

 deposits, as a preparation for his Arctic explorations. 



Professor Woodworth also took charge of the field work of one 

 student in Mining 28 for the Department of mining. 



Professor Woodworth during the year saw through the press 

 his report on the Shaler Memorial Expedition to Chile, and pre- 



