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INTRODUCTION 1It 
Ships, Officers, and Travellers; particularly to 
those engaged in the South Sea Fishery,”’ &c. 
which went through two editions. Since that 
time, science has rapidly advanced, and it may 
be said, there are but few individuals who have 
not felt a desire to obtain something more than 
an ordinary knowledge of the productions of 
nature, whether mineral, animal, or vegetable. 
The attainment of this desirable object has been 
rendered extremely easy by recent publications, 
which embrace, separately, the various bran- 
ches of natural history; and there is no de- 
partment which has received more illustration 
than Conchology*. 

* The Author has just published the Systems both of Lin- 
naus and Lamarck ; as well as an Introduction to Conchology 
according to the Linnzan Arrangement, with colored plates 
and lists of the names of the various species under each genus, 
written expressly for Students, and containing particular in- 
structions for Collectors. 
