NATURAL SCIENCES OF PHILADELPHIA. 



13 



Stratigraphic Geology. 



J. P. Lesley, 

 B. S. Lyman, 

 F. Y. Hayclen, 

 Franklin Piatt. 



Chemistry. 



F. A. Genth, 

 Robt. Bridges, 

 E. Goldsmith. 



Physics. 



R. E. Rogers, 

 John F. Frazer, 

 John Warner. 



Instruction and Lectures. 



Hector Tyndale, 

 R. S. Kenderdine, 

 Win. S. Halsey. 



Library. 



Jos. Leidy, 

 Robt. Bridges, 

 Geo. W. Try on, Jr. 



On favorable report of the committee, the following paper was 

 ordered to be printed: 



1ST 2.] 



