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, Manufactures, and Commerce, of London; Member of 



the Royal Mineralogical Society of Dresden; of the Imperial Agricul- 



* rural Society of Moscow ; Honorary Member of the Linnsean 



Society of Paris ; of the Natural History Society of 



Belfast ; and Member of various Literary and 



Scientific Societies in America. 



VOL. XIII.-JANUARY, 1828. 



NEW HAVEN: 



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



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



HILLIARD, GRAY, LITTLE & WILKINS, Boston. 



PRINTED BY HEZEKIAH HOWE. 



