ERRATA. 



P. 292, 1. 2, for lips, read tips.—?. 297, 1. 28, for 2 7J, read 7^.— P. 287, 1. 2, for 

 Dassin, read Dassier ; for first, read second; 1. 29, for 1817, read 1825. — P. 368, 1. 

 28, before azote, read oxygen. 



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 New Haven, Oct. 1, 1839. 

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