AN INDEX 



TO THE 



Scientific Contents 



OF THE 



Journal and Proceedings 



OF 



The Academy of Natural Sciences 



of Philadelphia 



*#/£ 11 



NSTITUTEDv 

 MDCCCXII 

 INCORPORATED 

 ^\ MDCCCXVII 



«i 



Vl 



/M2 



Published in Commemoration of the Centenary 

 of the Academy, March 21, 1912. 



PHILADELPHIA 

 THE ACADEMY OF NATURAL SCIENCES 



1913 



