SV5^73 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDUCTED BY 



PROFESSOR SILLIMAN 



AND 



BENJAMIN SILLIMAN, Jr. 



VOL. XLVL— APRIL, 1844. 



NEW HAVEN: 



Sold by B. NOYES.— Boston, LITTLE & BROWN and W. H. S. JORDAN.— 

 JVeic York, WILEY & PUTNAM, C. S. FRANCIS & Co., and G. S. SILLI- 

 MAN.— Philadelphia, CAREY & HART and J. S. LITTELL.— Baltimore, 

 Md., N. HICKMAN.— London, WILEY & PUTNAM.— Para, HECTOR 

 BOSSANGE & Co.— Hamburgh, Messrs. NESTLER & MELLE. 



PRINTED BY B. L. HAMLEN. 



~'«$7^ 



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