.o,p> 



THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDUCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



Professor of Chemistry, Mineralogy, &c. in Yale College ; Corresponding Member of 

 the Society of Arts, Manutactmes, and Commerce, and Foreign Member of 

 the Geological Society, of London ; Member ot the Royal Mineralogical 

 Society ot Dresden; of the imperial Agricultmal Society of Mos- 

 cow ; Honorary Member of the Linnaean Society of Paris; 

 of the Natural History Society of Beltast; and 

 Member of various Literary and Scien- 

 tific Societies in America. 



VOL. XV,— JANUARY, 1829. 



NEW HAVEN: 



Published and Sold by HEZEKIAH HOWE and A. H. MALTBY. 



Philadelphia, E. LITTELL.— JVeto York, G. & C. CARVILL. 



Boston, BILLIARD, GRAY, LITTLE & WILKINS. 



London, JOHN MILLER, 40 Pall Mall. 



PRINTED BY HEZEKIAH HOWE. 







