Vol. VI, No. 4 July, 191 1 



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. 



Carolus M. Broomall, Editor. 



Media, Pa. 



Issued Quarterly. Subscription, One Dollar per annum in adrance. 

 Address all correspondence to the Editor. 



Issued October 15th, 1912 



