211 



PROCEEDINGS 



OF THE 



AMERICA:^' PHILOSOPHICAL SOCIETY, 



HELD AT PHILADEL P^^ I A . 



♦ 



Vol. XIX. JANUARY to JUNE, 1881. No. 108. 



Stated fleeting, January 7, 1881. 



Present, 8 members. 



President, Mr. Fraley, in the Chair. 



Letters of acknowledgment were read from the Morgan- 

 landische Gesellschaft, Halle a. S., Nov. 80 (100 to 105 ; list), 

 and from Prof. J. J. Stevenson (106). 



A letter requesting exchanges was received from M. 

 DeMilloux, Director of the Musee Guimet, Lyons. On 

 motion, it was referred to the Committee on Publica- 

 tion with power to act. 



A request from the Albany Institute for Ko. 101 to com- 

 plete a set was allowed. 



Donations for the Library were received from the Russian 

 and Belgian Academies ; the Flora Batava ; the Geographi- 

 cal Societies in Paris and Bordeaux, Loudon Astronomical 

 and Meteorological Societies and Nature, Nautical Almanac 

 of Spain, American Journal of Mathematics, Sillinian's 

 Journal, Dr. G. W. Hawes, the Wesleyan University, New 

 Jersey Historical Society, Pennsylvania Board of Agricul- 

 ture, H. C. Baird, H. C. Lewis, H. Phillips, Jr.,^0. T. 

 Mason, and Smithsonian Institution. 



An obituary notice of Peter McCall, was read by Mr. 

 Henry Phillips, Jr. 



Notes on Photodynamics, were read by Professor P. E. 

 Chase. 



TROC. AMER. PHILOS. SOC. XIX. 108. 2a. PRINTED FEBRUARY 31, 1881. 



