13 



the other for students in Palaeontology. 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. 35-60. 



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, 

 III., 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. 



