\^\^-^t f Z/ o ff 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE ANI> ARTS* 



CONDUCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



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



For. Mem. Geol. Sac, London; Mem. Roy. Min. Soc, Dresden; Nat. Hist. 



Soc, Halle; Imp. Agric. Soc, Moscow; Hon. Mem. Lin. Soc, Paris; 



Nat. Hist. Soc. Belfast, Ire. ; PhU. and Lit. Soc. Biistol, Eng. ; 



Mem. of various Lit. and Scien. Soc. in America. 



VOL. XXm.— JAI i i i ttARY> -l 833. 



1. 



NEW HAVEN: 



Published and Sold by HEZEKIAII HOWE & Co. and A. H. MALTBY, 



Baltimore, E. J. COALE & J. S. LITTELL.— Philadelphia, E. LITTELL and 

 CAREY & nAB.T.—J\rew York, G. & C. & H. CARVILL,— .Bosfon, HIL- 

 LIARD, GRAY, LITTLE & WILKINS. 



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