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AMERICAN JOURNAL © 
OF 
SCIENCE AND ARTS. 
« 
Wwe 
m os ed 
eee CONDUCTED BY ~ 
BENJAMIN SILLIMAN, M.D. >. D. 
Prof. Chem., Min., &c. in Yale Coll.; Cor. Mem. Soc. Arts, Man. and Com., and For. Mem. Geol. 
; Hon “Me em. ‘Br. r.and For. Abor. Protec. Soc., and of Scien. Soc., Mem. Geol. Soc., and of the 
. nd Stati 
m. of th t. His 
Greece; faa and | Hist Soc., Quebec; Melons ae 3 various Literary and Scientific Societies 
the Uni 
AIDED BY 
BENJAMIN. SILLIMAN, Jz., A.M. 
Se the Yale Nat’ tee Gok Mee etter cee nd Geology in Yale te Bec. 
of the Yale Nat. Hist. Soc.; Mem. of the Con cad. of Arts and Sci. ; 
Mem. of the Lycensa of Nataral seeaaar “New York; of the 
Boston Society of Natural History, &c. 
’ 
VOL. XXXIX.—OCTOBER, 1840. | 
ee 
NEW HAVEN: 
Sold by A. H. MALTBY and B. & W. NOYES Wiper er. CAREY & 
HART and J. 8S. LITTELL. Ses cain aa N. HICKMAN.—New York, 
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Boe St.—Boston, C. C. LITTLE rife tin: WILEY & PUTNAM, 
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NESTLER & MELLE 
PRINTED BY B. L. HAMLEN. 
Mu, BOT CAR DaN 
1910 
