CIS 



as 



TO 

 CHARLES A. POULSON, Esq. 



Member of the Academy of Natural Sciences, <^c. 



Dear Sir,— I take the liberty to dedicate this 

 volume to you, whose liberality has afforded the 

 friends of science the use of a library, richer in 

 works on Conchology than any other in the United 

 States; and of a collection of shells almost unrivalled 

 by any private cabinet. It is therefore with great 

 pleasure that I embrace this occasion to acknowledge 

 my obligations to you; and I sincerely wish that so 

 pleasing and instructive a study as that of Natural 

 Science may long continue to amuse your leisure 

 hours, 



1 am, dear sir. 



Your obedient servant, 



T. A. Conrad. 



Philadelphia, April 4, 1834. 



