CONTENTS. 



Page 



Art. XII. Memoir on the Xanthium maculatum, by the 



same 151 



ZOOLOGY. 

 Art. XIII. Description of the Phalaena Devastator — ^the 



Insect that produces the Cut-worm, by Mr. 



John P. Brace 154 



Art. XIV. Description of the Exoglossum, a new genus of 



Fresh-water Fish, by C. S. Rafinesque, Esq. 155 



PHYSICS, MECHANICS, AND CHEMISTRY. 



Art. XV. On the Revolving Steam-Engine of Mr. Sa- 

 muel Morey, communicated by John L. Sul- 

 livan, Esq 157 



Art. XVI. Cautions regarding Fulminating Powders . 168 



rSEFUL ARTS. 



Art. XVII.* Account of a Parisian method of obtaining 



Gelatine from bones, by Mr. Isaac Doolittle 170 



Art. XVIII. On the use of Distilled Seawater for do- 

 mestic purposes — from the Annales de Chi- 

 mie, &c 172 



FINE ARTS. 



Art. XIX. Essay on Musical Temperament, by Profes- 

 sor Fisher 176 



Art. XX. Notice of Col. TrumbulPs Picture of the De- 

 claration of Independence 200 



INTELLIGENCE. 



Aft. XX!. An Address to the People of the Western 



Country 203 



Art. XXII. Extract of a letter from Col. Gibbs, on the 



effect of light on the Magnetical power . . 207 



Art. XXIII. On a new Lamp, without fliarae — from the 



Annals of Philosophy ibid. 



* ERRATUM. 

 la the text this Article was, by inadventcnce, numbered XIX, and all the sue 

 oeeding Articles of thia Number are marked two higher than tliey ought to be. 



