AMERICAN JOURNAL 
SCIENCE AND ARTS. 
—-e— 
CONDUCTED BY 
BENJAMIN SILLIMAN, M. D. LL. D. 
Professor of Chemistry, Mi righ &e. in Yale Aine ac ae Member of the 
Seciety of Arts, Tiga nd Commerce. of London; Mi aaa of the Royal 
Mineralogical Society of Dresden ; ns the Salsa Agricultural Se 
ciety of Moscow ; Honorary Member of the Linnean Soci 
of Paris; of the Natural History Society of Belfast; 
and of vari rary and Scientifie 
VOL. XII.—JUNE, 1827. 
NEW-HAVEN, Published and Sold by A. H. MALTBY. 
PHILADELPHIA, “ “ “ “ E. LITTELL. 
NEW-YORK, «¢  «& « G.&C. CARVILL. 
BOSTON, HILLIARD, GRAY, LITTLE & WILKINS. 
—-sas— \2 hy 
NEW-HAVEN: 
PRINTED BY THOMAS G. WOODW, 
1827. 
