80 Beautiful Shells. 



Properly to treat of fossil sliells would require 

 a book of itself, and a large book too ; we can licre 

 but allude to tlie subject, as a part, and a very 

 important and interesting part, of the study of 

 Concliology ; more will be said about it in a volume 

 wMcli we purpose writing for tliis series, on Rocl^s, 

 and tlie petrified organic remains found in and 

 about tlicm. 



" Those relics of an older \^orl J, which tell 



Of changes slow or sudden, that have past 

 Over the face of Nature; fossil shell, 



Shark's tooth, and bone of megatheran vast, 

 Turned into stone, and so preserved to slow 

 Man of those thiurrs whereof ho ou^ht to know." 



