THE 



AMERICAN JOURNAL 



OF 



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. Geol. Soc, Paris; 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.; Lit. and Hist. Soc, Quebec; Mem. of yarious 



Lit. and Scien. Soc. in America. 



VOL. XXX.— No. 2— JULY, 1836. 



FOR APRIL, MAY, AND JUNE, 1836. 



NEW HAVEN; 



Sold by A. H. MALTBY and HERKICK & NOYES.— BaWmore, I. SMITH 

 Uoi/IANS.— Philadelphia, CAREY & HART and J. S. LITTELL.— JVewj 

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

 No. 48 Wall Street.— jBosfon, HILLIARD, GRAY' & Co. 



PRINTED BY B. L. HAMLEN. 



