PllOCEEDlNGS 



AMERICAN PHILOSOPHICAL SOCIETY 



HELD AT PHILADELPHIA 



PROMOTING USEFUL KNOWLEDGE 



Vol. X 



.TANUAEY ISGo TO DECEMBER 18G8 



PHILADELPHIA: 

 PRINTED FOR THE SOCIETY 



BY M ' C A L I. A & S T A V E L Y 



^1 8 G 9. 



