AN INDEX 



TO THE 



Scientific Contents 



OF THE 



Journal and Proceedings 



OF 



Tke Academy of Natural Sciences 



of Philadelphia 



ill 





^iNSTITUTE^ 

 MDCCCXII 

 '?&/£ l^llNCORPOEATED 

 ^MDCCCXVII 



%1 



s 1 



SW2 



Published in Commemoration of the Centenary 

 of the Academy, March 21, 1912. 



PHILADELPHIA 



THE ACADEMY OF NATURAL SCIEN< 



1913 



