— 
— 
PROCEEDINGS 
y ey 
— (> 
— 
OF THE 
AMERICAN PHILOSOPHICAL SOCIETY 
HELD AT PHILADELPHIA 
FOR 
PROMOTING USEFUL KNOWLEDGE. 
ton lis, 
Za s0nio Insc, 
% GILL 
COLLECTION 
’ AS 
tional Wuse® 
Vol. XVII. 
JUNE 1877 to JUNE 1878. 
National Museu 
PHILADELPHIA : 
PRINTED FOR THE SOCIETY 
BY M’CALLA & STAVELY. 
1878. 
