'.M.A 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ART8. 



CONDUCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



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



For. Mem. Geol. Soc, London; Mem. Roy. Min. Soc, Dresden; Imp. 



Agric. Soc, Moscow •{ Hon. Mem, Lin. Soc, Paris; Nat. Hist. 



Soc. Belfast, Ire-; Phil, and Lit. Soc Bristol, Eng.; 



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



c VOL. XXL-No. 1.— OCTOBER, 1831. 



FOR JULY, AUGUST, AND SEPTEMBER, 1831. 



NEW HAVEN; 



Pub'ushed and Sold by HEZEKIAII HOWE and A. H. MALTBY. 

 Philadelphia, E. LITT ELL & BROTHER.— JVeu; York, G. & C. & H. 

 CARVILL.— Bosfo7?, HILLIARD, GRAY, LITTLE & WILKINS. 



PRINTED BY HEZEKIAH HOWE. 



