PROCEEDINGS 



AMERICAN PHILOSOPHICAL SOCIETY, 



1 ■* 1 i ■' I' 1 , 1 . 



HELD AT PHILADELPHIA, 



PROMOTING USEFUL KNOWLEDGE. 



VOL. IV. 



JUNE, 1843, TO DECEMBER, 1847. 



PHILADELPHIA: 



PRINTED FOR THE SOCIETY, 



By John C. Clarlc, 60 Dock Street. 

 Svv\ 



1847. 



V 



