TRANSACTIONS 
OF THE 
AMERICAN PHILOSOPHICAL SOCIETY, 
HELD AT PHILADELPHIA, 
FOR PROMOTING USEFUL KNOWLEDGE. 
VOL. IX—NEW SERIES. 
FUGLINAED BY THE SOCIETY. 
Whtlavelpnta: 
WILLIAM 8S. YOUNG, PRINTER,—NO. 50 NORTH SIXTH STREET. 
"1846, 
