-^^^.75f 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDUCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



Prof. Chem., Min., &c. in Yale Coll. ; Cor. Mem. Soo. Arts, Man. and Com., Cor. Mem. Met. Soc, 



and For. Mem. Geol. Soc, London ; Hon. Mem. Br. and For. Abor. Proiec. Soc, Mem. Geol. 



Soc, and Hon. Mem. Lin. and Statis. Socs., Paris ; Mem. Roy. Min. Soc, Dresden ; Nat. 



Hist. Soc, Halle ; Imp. Agric Soc, Moscow ; Nat. Hist. Soc, Belfast, Ire. ; Phil, and 



Lit. Soc, Bristol, Eng. ; Hon. Mem. Roy. Sussex Inst., Brighton, Eng. ; Cor. 



Mem. of the Nat. Hist. Soc, and of the Archaeological Soc, Athens, 



Greece; Lit. and Hist. Soc, Quebec; Mem. of various 



Lit. and Scien. Soc. in the U. States. 



AIDED BY 



BENJAMIN SILLIMAN, Jr., A. B. 



Assistant in the department of Chemistry, Mineralogy and Geology in Yale College ; Cor. Mem. 



of the Meteorological Soc, London ; Sec. of the Yale Nat Hist. Soc, Mem. of the Conn. 



Acad, of Arts and Sci. ; Cor. Mem. of the Lyceum of Natural History, New York, &c. 



VOL. XXXVII.— eeroBEftf issa 



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