PROCEEDINGS 



OP THE 



ACADEMY. OF NATURAL SCIMC18 



OF 



PHILADELPHIA 



No. 9.— May, June and July, 1869. 



PHILADELPHIA: 



ACADEMY OF NATURAL SCIENCES, 

 Corner of Broad and Sansom Streets. 

 1869. 



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



