^-Z2i..7^ 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AN© ARTS. 



CONDUCTED By 



BENJAMIN SILLIMAN, M. D. LL. D, 



Prof. Chem., Min., &c. In Yale Cell. ; Cor. Mem. Soc. Arts, Man. and Com, ; and 



For. Mem, Geol. Soc, London ; Mem. Gaol. Soc, Paris; Mem. Roy. Min. Soc, 



Dresden; Nat. Hist. Soc, Halle; Imp. Agvic Soc, Moscow; Hon. Mem^ 



Lin. Soc, Paris; Nat. Hist. Soc Belfast, Ire; Phil, and Lit. Soc. 



Bristol, Eng.; Lit. and Hist. Soc, Quebec; Mem. of various 



Lit. and Scien. Soc in America. 



VOL. XXX.— ^^It¥» 1836. 



NEW HAVEN; 



SolJ by A. H. MALTBY and HERllICK & NOYES.— 5a«tmore, L- SMITH 

 UOMK^S.— Philadelphia, CAREY & HART and J. S. LITTELL.— JVew; 

 York, G. & C. CARVILL & Co., No. 73 Cedar St., and G. S. SILLIMAN, 

 No. 48 Wall Biteei.— Boston, HILLIARD, GRAY & Co. 



PRINTED BY B. L, HAMLEN. 







