m 



n I 



1 



THE 



k 1 



I 



AMERICAN JOURNAL 



OF 



SCIENCE AN1> ARTS 



CONDUCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



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

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



gnc 





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

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



VOL. XIX.-JANUARY, 1831 







NEW HAVEN: 



and A. H. MALTBY 



.Wished and ^J^^^mB^feu, York , « « £« 

 P^^^^U&m t «RAY, LITTLE & W1LKINS 



PRINTED BY IIEZEKIA1I HOWE 







Mo. Bot. Garden, 



1501. 





