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THIS Lexicon contains the explanations of more than five 

 thousand words, terms, and names, used in natural history, 

 embracing the departments of zoology, botany, mineralogy, 

 and geology. Besides the technical terms, there are names 

 enough, pertaining to the several departments, explained in 

 the work, to give the student, or general reader, an idea of 

 nomenclature in natural history. 



When it occurs, the Greek omega has been marked thus 

 (<?), and italics have been substituted for the Greek charac- 

 ters, because, it is presumed, many who may use this volume 

 are unacquainted with the dead languages. 



The references are to the pages of the Series of Books 

 on Natural History, and to the " Elements of Natural His- 

 tory," prepared by the author of this little volume. 



(iii) 



