454 PROCEEDINGS OF THE ACADEMY OF [May , 



May 3. 



The President, Samuel G. Dixon, M.D., LL.D., in the Chair. 



Seventeen persons present. 



The death of Lancaster Thomas, a member, April 2, 1910, was 

 announced. 



Henry Skinner, M.D., made a communication on insects injurious 

 to shade and fruit trees. (No abstract.) 



May 17. 

 Mr. Charles Morris in the Chair. 



Forty-three persons present. 



The death of Edward Van Beneden, a correspondent, April 28, 1910, 

 was announced. 



The Publication Committee reported the reception of papers under 

 the following titles: 



" Notes on Batoid Fishes," by Henry W. Fowler (May 5, 1910). 



" Descriptions of four New Cyprinoids (Rhodeinae)," by Henry W. 

 Fowler (May 5, 1910). 



" A Note regarding the Chinese Alligator," by Thomas Barbour 

 (May 17, 1910). 



The following communications were made under the auspices of 

 the Mineralogical and Geological Section: 



Chester A. Reed, on some geological features of the Arbuckle 

 Mountains of Oklahoma. (No abstract.) 



The Copper Deposits of Franklin and Adams Counties, Pennsylvania. 

 — Edgar T. Wherry, Ph.D., remarked that the region is occupied 

 by two Pre-Cambrian effusive igneous rocks, a rhyolite and a basalt, 

 both considerably altered. The latter was probably the first to form, 

 the acid rock being in part in dikes cutting through it, and a contact 

 exposed during recent mining operations showing a rhyolite lava 

 overlying basalt. The deposits consist chiefly of native copper, in 



