INTRODUCTION. ix 



ductions of nature. The accomplishing 

 of this has been rendered extremely 

 easy by recent publications, which em- 

 brace, separately, the various branches 

 of natural history, more particularly that 

 of Shells*, describing and explaining 

 the various orders and species, with par- 

 ticular instructions to collectors. 



When at sea, I have often lowered 

 down my boat to take in floating wood. 



* The Author has just published a small 

 Treatise on Shells, with colored plates, and 

 lists of the names of the various species under 

 each genus, written expressly for learners. 



