PROCEEDINGS 



OF THE 



kUmm OF NATURAL SCIENCES 



OP 



PHILADELPHIA 



No. S.-Aug'., Sept., Oct. and Nov., 1869, 



PHILx\DELPHlA: 



ACADEMY OF NATURAL SCIENCES, 



Corner of Broad and Sansom Streets. 



1869. 



Merrihew & Son, Printers, 243 Arch St., Philadelphia. 



