OS, 7F s¢ 
THE 
AMERICAN JOURNAL 
OF 
SCIENCE AND ARTS. 
CONDUCTED BY 
PROFESSOR SILLIMAN 
AND 
BENJAMIN SILLIMAN, Jr. 
VOL. XLIX.—OCGTFOBER, 1845. 
NEW HAVEN: 
Sold by H. DAY.—Boston, LITTLE & BROWN and W. H.S. JORDAN.— 
New York, WILEY & PUTNAM, and C. 8S. FRANCIS & Co.—Philadelphia, 
CAREY & HART, and J. S. LITTELL.— Baltimore, Md., N. BICKMAN.— 
London, WILEY. & PUTNAM.—Paris, HECTOR BOSSANGE & Co.— 
Hamburgh, Messrs. NESTLER & MELLE. 
PRINTED BY B.L. ee ONAN INSTR 
