

THE 



AMERICAN JOURNAL 





OF 



SCIENCE AND ARTS 



CONDUCTED BY 



PROFESSOR SILLIMAN 



AKD 



BENJAMIN SILLIMAN, Jr. 



VOL. XLIY.—No. 2.— APRIL, 1843. 



FOR JANUARY, FEBRUARY, AND MARCH, 1843. 



NEW HAYEN: 



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

 JV«p York, WILEY & PUTNAM, C. S. FRANC & Co., and G. S. SILLI- 

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

 Md., N. HICKMAN— London, WILEY & ?! ■» AM.— Paris, HECTOR 

 BOSSANGE & Co.— Hamburgh, Messrs. M^'xLLR & MELLE. 



PRINTED BY B. L. HAMLEN. 



Published at !¥ew Haven, April 17, 1843 



