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the other for students in Paleontology. The instruction was 
given by theses, and discussions on the subjects of which they 
treated. 
The following publications have been made by N. S. Shaler, 
viz. : — 
1. A series of twenty-five colored geological models and twenty-five 
photographs of important geological objects, each accompanied by letter- 
press description, with the assistance of Prof. W. M. Davis and Mr. 
T. W. Harris. D.C. Heath & Co., Boston. 
2. Preliminary Report on the Geology of the Cobscook Bay District, 
Maine. Amer. Journal of Science, July, 1886, pp. 85-60. 
Instruction was given to about forty students in Physical Geog- 
raphy and Meteorology, following much the same scheme of work 
as in former years. A second year’s course in these studies was 
announced at the beginning of the College term, and was taken by 
one student, who prepared theses on several subjects, one of which 
has been published, and another is in preparation for publication, 
jointly with the instructor. During May and June this student 
carried on observations on the motion of clouds with instruments 
constructed for the purpose under his direction. 
The following papers have been published by students : — 
The Cause of Anti-Cyclonic Cold in Winter, by W. R. Dewey, Class of 
1886. Amer. Meteorol. Journal, II., 1886. 
Waterspouts on the Gulf Stream in Winter, by H. B. Gibson, Class of 
1888. Amer. Meteorol. Journal, III., 1886, pp. 119-126. 
The following papers have been published by Prof. Davis: — 
Winter on Mount Washington. Science, VII., 1886, pp. 40-42. 
Chinook Winds. Science, VII., 1886, pp. 55, 56. 
Foreign Studies of Thunderstorms. Amer. Meteorol. Journal, II., 
1886. 
Cyclones, Anticyclones, and Pericyclones. Amer. Meteorol. Journal, 
IIl., 1886, pp. 117-119. 
Methods of Study of Thunderstorms. Proc. Amer. Acad., XXI., 1886, 
pp- 336-347, 
Thunderstorms in New England in the Summer of 1885. Proc. Amer. 
Acad., XXII, 1886, pp. 14-58. 
