NE W 
Hresh Water Spells 
OF THE 
UNITED STATES, 
WITH LITHOGRAPHIC ILLUSTRATIONS, 
9 
AND 
A MONOGRAPH 
OF THE 
GENUS is elas: OF SAY ; 
secretes reat anaes 
ALSO 
A SYNOPSIS OF THE AMERICAN NAIADES. 

BY T. A. CONRAD, . 
Member of. the Acad. of Natural Sciences of Philadelphia. 

PHILADELPHIA: 
Jupan Dosson, 108 Cuesnut Srreer. 
E.G. DORSEY, PRINTER. 
May 3, 1834. 




