

«»«»«r>jir<^jjiif''"*" ^l*^ 





THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDUCnED BY 



PROFESSOR SILLIMAN 



AND 



BENJAMIN SILLIMAN, Jr. 



VOL. XLIIL—No. 2.--0CT0BER, 1842. 



FOR JULY, AUGUST, AND SEPTEMBER, 1843. 



(TO BE CONTINUED QUARTERLY.) 



NEW HAYEN: 



Sold by B, & W. NOYES.— P.^i?adeZp/«ffi, CAREY «& HART, J. S. LITTELL 

 and DREW & SCAMMELL, 67 So, Third St.- Baltimore, Md., N. HICK- 

 MAN.— JVeto York, C. S. FRANCIS & Co., No. 252 Broadway, and G. S. SILLI- 

 MAN, No. 49 Wall St.— Boston, C. C. LITTLE & Co. and W. H. S. JORDAN. 

 —London and Mw York, WILEY & PUTNAM, No. 35 Paternoster Row, Lon- 

 don, and 361 Broadway, JYew York.— Paris, HECTOR BOSSANGE & Co., 

 No. 11, Q,uay Voltaire.— flamftwr^A, Messrs. NESTLER & MELLE. 



PRINTED BY B. L. HAMLEN. 



PubUshed at New Haven, October O^ 1842. 



