4 i 



S 





V 



1 



c Kl 





? 



THE P 



i/V4-/ 



/3 ,..-* ^ 





AMERICAN JOURNAL 







OF 



SCIENCE AND ARTS. 



CONDUCTED BY 



PROFESSOR SILLIMAN 



AND 



BENJAMIN SILLIMAN, Jr. 



VOL. XLIV.— APRIL, 1843. 



NEW HAYEN: 



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

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

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



Mi., N. HICKMAN.— London, WILEY & PUTNAM.— Paris, HECTOR 

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



PRINTED BY B. L. HAMLEN 



• • Be . .» rarde&j 



1901. 



