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AMERICAN JOURNAL. 
SCIENCE AND ARTS. 
CONDUCTED BY 
BENJAMIN SILLIMAN, 
* 
Erofessor of Chemistry, Mineralogy, &c. in Vale College; Corresponding Member of the 
_ Society of Arts. Wianufactures, and Commerce, of London; Member of the Royal 
Mineralogical Society of Dresden; of the Imperial Agricultural So- 
ciety of Moscow ; Honorary Member of the Linnean Society 
of Paris; of the Natural History Society of Belfast ; 
and of various Literary and Scientific 
Societies in America. 
NEW-HAVEN: 
PRINFED AND PUBLISHED BYS. CONVERSE, FOR THE EDEPOR, 
SOLD BY THE PUBLISHER; BY E, LITTELL, 
PHILADELPHIA, AND TRENTON, N.J.; AND 
By Hezekiah Howe, New Haven; Pishey Thompson, Washington, D.€.: 
Huntington & Hopkins, Hartford; Cummings Hilliard, & Co. Boston; 
Goodale, Glazier, & Co. Hallowell, ») ine; A. T. Goodrich, New York; 
Galeb Atwater, Circleville, Ohio; ThomasJ. Ray, Augusta,Ga.; Whip- 
ple & uawrence, Salem, Mass. ; Edward J. Coale, Baltimore; B. D. Plant, 
Columbia, 5. C.; John Wutchins, Providence, R.1.; Thomas R. 
Williams, Newport, R 1.; William T. Williams, Savannah, Geo. ; Luke 
Loomis, Pittsburgh, Pa.; Daniel Stone, Brunswick, Maine; Professor 
Hl. Mitchell, Chapel Hill College, N.C.; E. F. Backus, Albany; John 
Miller, No, 69 Fleet-street, London. 
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