Pee Se 
AMERICAN JOURNAL 
SCIENCE AND 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. Soc,, London; Mem. Roy. Min. Soc., Dresden; Nat. Hist. 
Soc., Halle; Imp. Agric. Soc., Moscow; Hon. Mem. Lin. Soc., Paris; 
_Nat. Hist. Soc. Belfast, Ire.;. Phil. and Lit. Soc. Bristol, Eng. ; 
‘Mem. of various Lit: and Scien. Soc. in America. 
VOL. XXVI.—No. L—APRIL, 1834. 
FOR JANUARY, FEBRUARY, AND MARCH, 1834. 
NEW HAVEN: ss 
Published and Sold by HEZEKIAH HOWE & Co. and A. H. MALTBY. 
Baltimore, E, J. COALE & Co.—Philadelphia, J. S. LITTELL and CAREY & 
HART.—Wew York, G. & C.& H. CARVILL.— Boston, HILLIARD, GRAY, 
LITTLE & WILKINS. 
PRINTED BY HEZEKIAH HOWE & CO. 
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