PROCEEDINGS 



OF THE 



ACADEMY OF NATURAL SCIENCES 



OP 



PHILADELPHIA. 



No- 3. Sept., Oct., Nov., Doc-., 1870. 



PHILADELPHIA: 



ACADEMY OF NATURAL SCIENCES, 

 Corner of Broad and Sansom Streets. 

 1870. 



Merrihew & Son, Printers, 24.J Arch St., Philadelphia. 



