Volume VII Number 4 



PROCEEDINGS 



OF THE 



DELAWARE COUNTY 

 INSTITUTE OF SCIENCE 



Publication Committee : 



T. Chalkley Palmer, Chairman; Trimble Pratt, M. D., 



J. C. Starbuck, M. D., B. M. Underbill, V. M. D., 



M. H. Hoyt, Kdward V. Streeper, Jr. 



Carolus M. Broomall, Kditor. 



Media, Pa. 



Issued at intervals. Limited edition for free distribution on application. 

 Address all correspondence-to the Editor. 



Issued March 15th, 1916 *" 



