VI CONTENTS. 



/ 



NUMBER II. 



237 



Page. 



Art. 1. On the Reduction of Iron and Silver Ores, with the prin- 

 cipal Silver Mines of Mexico and S. A. ; by Lt. W. W. 

 Mather, of the U. S. Mil. Acad., West Point, 213 



II. Miscellaneous Notices, in a letter from an American Na- 

 tional Ship, ------- 



III. Miscellaneous Communications from Dr. Hare, - 216 



IV. Apparatus and processes; by Dr. Hare, - - 247 

 V. Remarks on the error of supposing that a communication 



with the Earth, is necessary to the efficacy of Electri- 

 cal Machines ; by Dr. Hare, - 253 

 VI. On Architecture; by Daniel Wadsworth, Esq., - 257 

 VII. On the relation between a Machine and its Model ; by 



Edward Sang, Edin., ----- 264 



VIII. Consideration on the Bitterness of Vegetables, etc.; by 



Dr. J. B. A. Guillemin, Pari?, 1832. - - 273 



IX. On the Eupatorium Huaco ; by Prof. W. R. Johnson, 279 

 X. Memoir on the elastic force of the vapor of Mercury, 



at different temperatures; by M. Avogadro, - 286 



XI. On the application of the Fluxional Ratio to particular 



cases; and the coincidence of the several orders of 

 Fluxions, with the binomial theorem; by Elizur 

 Wright, Esq. 



298 



312 



XII. On some improvements on Brunner's process for Po- 

 tassium, and in the means of preserving that metal; by 

 Dr. Hare, - - 



XIII; Improved Syphons; by Dr. R. Hare, - - 317 



XIV. Stereotype Printing. — An original paper of the late 



Lieut. Gov. Colden, with some account of stereotyping, 

 as now practised in Europe, &c; by the Editors of the 

 Am. Med. and Philos. Register, - - - 319 



O 7 



XV. Notice of the most simple means of employing dead ani- 

 mals ; by Prof. M. Payen, - ... 326 

 XVI. An Essay on Gypsies; abridged from the Revue Encyclo- 



pedique, Nov. 1832 ; by J. Griscom, - - 342 



346 



XVII. On the Collision of two Comets ; — Comet of July, 1832; 



by J. J. Littrow, - 



XVIII. Description of the Bare Hills near Baltimore; by II. H. 



Hayden, M.D., - - - 



XIX. Meteorological Table; by Gen. Martin Field, - 361 



349 



