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“AMERICAN JOURNAL 
og ts 
OF 
~ SCIENCE AND ARTS. 
CONDUCTED BY 
PROFESSOR SILLIMAN 
AND 
BENJAMIN SILLIMAN, Jr. 
VOL. XLVI.—APRIL, 1844. 
NEW HAVEN: 
Sold by B. NOYES.—Boston, LITTLE & BROWN and W. H. 8S. JORDAN.— 
New York, WILEY & PUTNAM, ©. 8. FRANCIS & Co., and G. 8. SILLI- 
MAN.—Philadelphia, CAREY & HART and J. 8. LITTELL.—Baltimore, 
Md., N. HICKMAN.—London, WILEY & PUTNAM.—Paris, HECTOR a 
BOSSANGE & Co.—Hamburgh, Messrs. NESTLER & MELLE. ; 
PRINTED BY B. L. HAMLEN. 
