290 



lin and Brussels ; the Societies at Ulm and Batli ; the Geo- 

 graphical Society and Meteorological Office ; and Nature ; the 

 Mass. Hist. Soc. ; Silliman's Journal ; Penna. Historical So- 

 ciety ; Penn Monthly ; Librarian of Congress ; Kentucky 

 Geological Survey ; Mexican Geographical Society ; Profes- 

 sor R. S. McCulloch and Mr. Samuel Davenport, of New 

 Holland. 



A circular letter from Dr. Aug. Le Jolis, dated Cher- 

 bourg, Oct. 12, respecting the 25th Anniversary (Dec. 30), of 

 the Society of Science, was on motion referred to the Secre- 

 taries to be suitably answered, after being signed by the 

 President. 



A communication, entitled " On the Atmosphere of the 

 Sun and Planets, by David Trowbridge, A.M.," (Professor at 

 Waterburgh, Tompkins Co., N. Y.) was received from Pro- 

 fessor Kirkwood, of Bloomington, Ind. 



Professor Chase made a verbal communication of his views 

 respecting intramercurial bodies revolving around the Sun. 



Mr. Briggs described the difficulties in the way of a suc- 

 cessful discussion of the type form of the vena coniracia in 

 hydraulics. 



Professor Houston continued the topic, and added remarks 

 upon the nature of the form and movements of the " ventral 

 segments," especially in cases where musical vibrations w^ere 

 employed to effect them. 



Pending nominations iSTos, 809, 810, 811, 812, were read. 



The curators reported, recommending the proposed ex- 

 change of duplicates with the Princeton Museum. The re- 

 port was accepted and adopted. 



And the nieeting was adjourned. 



Stated Meeting^ November 11 th, 1876. 



Present, 17 members. 



Vice-President, Mr. Fraley, in the Chair. 



Mr, W. Milnor Roberts, a newly elected member, was in- 

 troduced to the presiding officer and took his seat. 



