INDEX. 



- €— On tlie desulphuration of metals, 



197 

 Gums, see Arabic, cherry -tree, traga- 



canth, «&c.— General characters and 

 species, 38 

 Gunpowder prober, 62 

 Cuyart, M. his new classification of 



plants, 351 

 Guyton, M. his account of the antique 

 vessel that was preserved at Genoa, 

 under the name of Sacro Catino, and 

 , reputed to be an emerald, 97— On 

 the means of forming a judgment on 

 the quality of glass, particularly win- 

 dow glass, and distiiiguishing such as 

 is liable to alteration, 142— On ni- 

 trous ether, 144— On conamon pot- 

 tery and porcelain, 291 

 H. 

 ilall, Rer. James, extracts from his 



" Travels in Scotland, 236 

 Haquet, M. on the formation of flint, 



114 ' 



Uarrup, Mr, on the diseases of wheat, 



2G2 

 Hassenfratz's experiments on'rogetatlon, 

 25, 27 — On copper pyrites, 51— On 

 sparry iron ores, S16 

 Haussmaiin, M. on various chemical 



action*;, 339 

 Hauy, 98 



Hearing trumpets, 310 

 Heat, subterranean, 148— Action of on 



metallic sulphurets, 108 

 Heinrich, Mr. his prize essay on light, 



72 

 Helmont, Van, his experiment on ve- 

 getable nutrition, 1 5 

 Hoegemuller, Chevalier Von, his in- 

 . tended tour to the East, 158 

 Romberg on vegetation, 25 

 Howard, Mr. his fulminating mercury, 



140 

 Hubert, M. on vegetation, 23 

 Humboldt, Von, on plants growing in 

 deep mines, 26— On the absorption 

 of gases by water, i:,'^>'— On audiome- 

 try, 126 



Huygens's experiments on vegetation, S4 

 Hyacinth roots, mucilage of, its proper 



ties, 52, 38 

 Hydraulics, 309 

 Hydrophilus, on the doctrine of chancfeg, 



116 — ^An universal tide table by, 118 



—Remarks on the breaking of the 



waves, ib 

 Hygiocerames, a species of porcelain, 



capable of standing the hfe, 293 



I. 



Indian corn, facts respecting, 239 

 Indigestion caused by the formation of 



acetous acid, 66 

 Iron pyrites, effects of heat on, 2QI 

 Iron spar, 315 

 Insects, new classification of, 213 



J. 



Jefferson, Mr. president of the United 

 States of America, his collection oi 

 Indian busts, 158 



Jellies, vegetable, experiments on, 34 



Joussclin, M. his " essays on the im- 

 provement of pottery in general, or 

 the art of making at the least expence 

 vessels for every use, more handsom^ 

 strong, and wholesome, without em- 

 ploying lead or tin in the composi- 

 tion of the coating, enamel, or glaze,'* 

 abridged, 201 



Juan, Don George, his theory of the 

 resistance of flui<ls, 72 



Jurine, Professor, his new method of 

 classing the hymenopterous and dip- 

 terous insects, 218— His geological 

 tourinAuvejgne, 295 



Kenmacher, on the cause of the bli|;ht 



in wheat, 264 

 Kirwan, Mr. 293 — On combiriations of 



sulphur and hidrogen, 45 v^ 



Klaproth, M. on sulphuric acid, o49 

 Knight, T. A. Esq. on the method q£ 



pfoducint? new and earlv fruits, 18^ 



u 



