TRANSACTIONS 



OF THE 



American Philosophical Society 



HELD AT PHILADELPHIA 



For Promoting Useful Knowledge 



New Se7^ies, VoL XXI, 

 Part /F, ^to^ I J 4. pages, with jo plates. 

 (Just Published.) 



A Study of the Brains of Six Eminent Scientists and Scholars 

 Belonging to the American Anthropometric Society, together 

 with a Description of the Skull of Professor E. D. Cope. 

 By Edw. Anthony Spitzka, M.D. 



Part Vi 4to, /p pages. (Just Published.) 



A Search for Fluctuations in the Sun's Thermal Radiation 

 through their Influence on Terrestrial Temperature. 

 By Simon Newcomb. 



Subscription— Five Dollars per Volume 

 Separate parts are not sold 



Address The Librarian of the 



AMERICAN PHILOSOPHICAL SOCIETY 

 No. 104 South Fifth Street 



PHILADELPHIA, U. S. A. 



