»u: 



-^ 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDliCTED BY 



PROFESSOR S I L L I M A N 



A N I > 



BENJAMIN SILLIMAN, J u. 

 VOL. XLL— No. 1.— JULY, 1841. 



FOR APRIL, MAY, AND JUNE, 18 il. 



-TO BE CONTINUED QUARTEIU.V.) 



NEW HAVEN 



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