TH-E 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDUCTED BY 



PROFESSOR SILLIMAN 



BENJAMIN SILLIMAN, Jr. 



YOL. XLVIL— No. 2.— OCTOBER, 1844 



FOR JULY, AUGUST, AND SEPTEMBER, 1844, 



WITH FIVE PLATES. 



tX^y 5C*u.»^t*»^ hrr.^%.i- "^iXI^ i'v:'.* -»- 



NEW HAYEN: 



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

 JVew York, WILEY & PUTNAM, C. S. FRANCIS «& Co., and G. S. ^WAX- 

 MAT^.—Pkiladelphia, CAREY & HART and J. S. LITTELL.— i^aZimore, 

 Md., N. HICKMAN.— Lonrfon, WILEY & PUTNAM.— Paris, HECTOR 

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



PRINTED BY B. L. HAMLEN. 



PnbUsbed at ^Sew Haven, Oct. S, 1844* 



