Vol. V, No. 4 July, 1910 



PROCEEDINGS 



OF the; 



DELAWARE COUNTY 

 INSTITUTE OF SCIENCE 



PuBTjcATioN Committee : 



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



Trimble Pratt, M. D., Charles Potts, 



B. M. Underhill, 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 March 10th, 1911 



