y'<^^^/>^^^i^^^ 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS, 



eoSDlTCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



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



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



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



Soc. Beliast, Ire.; Pliil. and Lit. Soc. Bristol, Eng.; 



Mein. of various I^it. and Seien. Soc. in America. 



VOL. XXI.— No. 2.-JANUARY, 1832. 



FOR OCTOBER, NOVEBIBER, AND DECEMBER, 1831. 



NEW HAVEN: 



Published and Suld by IlEZEKIAIl HOWE and A. H. MALTBY. 

 Phtladdphia, E. LITTELJ. & BROTHER and CAREY & HART.— 

 JVew York, G. & C. fe H. CAR\lLh.— Boston, HILLIARD, GRAY, 

 LITTLE & VVILKLNS. 



PRINTED BY IlEZEKIAIl HOWE. 



