ADVERTISEMENT. 



Ihe Second Edition of the "Elements of 

 Conchology" is offered to the pubhc with 

 a grateful acknowledgement of the favor- 

 able manner in which the first has been re- 

 ceived. The Author cannot but express 

 his satisfaction at finding that the interest- 

 ing branch of Natural History to which he 

 has endeavoured to draw attention is daily 

 making progress in the estimation of those 

 to whom, principally, his pages were ad- 

 dressed, to whom the size and polish of a 

 shell formerly constituted its greatest value. 



