PROCEEDINGS 



OF THE 



ACADEMY OP NATURAL SCIENCES 



OF 



PHILADELPHIA. 



No. 3. May, June, July, August, 1870. 



V. 



"Z- 



PHILADELPHIA: 



ACADEMY OF NATURAL SCIENCES, 

 Corner of Broad and Snnsom Streets 

 1870. 



Merrihew & Son, Printer?. 243 Arch St., Philadelphia. 



