3Z>^^7S 6'(e 





THE 



AMERICAN JOURNAL 



OF 



SCIENCE AND ARTS. 



CONDUCTED BY 



BENJAMIN SILLIMAN, M. D. LL. D. 



l>rofessor of Chemistiy, Mineralogy, &c. in Yale College; Corresponding Member of 

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

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

 Society ot Dresden ; of the Imperial Agricultural Society of Mos- 

 cow ; Honoraiy Member of the Linnsean Society of Paris ; 



of the Natural History Society of Belfast; and ' 



Member of various Literary and Scien- 

 tific Societies in America. 



VOL. XVI.— J^i^, 1829. 



NEW HAVEN: 



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

 Philadelphia, E. LITTELL & BROTHER.— JVew York, G. & C. & H 

 CARVILL.— Boston, HILLIARD, GRAY, LITTLE & WILKINS, 



PRINTED BY HEZEKIAH HOWE» 



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