Vol. VI, No. 2 January, 191 1 



PROCEEDINGS 



OF THE 



- DELAWARE COUNTY 

 INSTITUTE OF SCIENCE 



Publication Committee : 



T. Chalkley Palmer, Chairman; Henry L,. Broomall, 



Trimble Pratt, M. D., B. M. Underbill, V. M. D. 



Carolus M. Broomall, Editor. 



Media, Pa. 



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

 Address all correspondence to the Editor. 



Issued August 5th, 1911 



