Gas, phofphorated Hydrogen, fee Ray- 

 mond. 

 Gas, Remarks on the fetid, of Drains, 



135 



Gafpard Monge, 192- 



Gay, 405 



Geoffroy, 177 



Gerhard, 98 



Girtanner on Azote, 137, 167, 268. 

 Strifture* on his Memoir, 37 1 



Glafs, etching on, its Antiquity, 1 



Glow-worms, on the Light of, 455 



G. M. Dr. on the State of Galvanifm, &c. 

 in Germany, 51 1 



Gmelin, 24 



Goettling, 137 



Goodwyn, H. Efq. on the Unities of 

 Weight and Meafure, 163. Engine for 

 raifing Water, 165, 31 'J. On the Quo- 

 tients arifing from the Divifion of an 

 Unit by prime Numbers, 402 



Gbugh, Mr. J. on fufpcnded Animation 

 in Vegetables, ^09 



Grafshoppers, a curious Story refpefting, 

 73 



Grjiy, 285 



Gren, 138 



Gren on the Method of extrafling Silver 

 from Copper-Mat, 145. His Principles 

 of modern Chemiftiy, 47 



Greville, Hon. C. 230 



Grimaldi, 78 



Gum Arabic, on the Origin of, 369 



Guyton, 104, 137, 172, 191, 216, 334, 

 371. On the Nature of the colouring- 

 Principle of the Lapis Lazuli, 308 



H. 



Hahnemann, 523 



Hacgueft, 09 



Haldane, Col. H. on the Pile of Vdlta, 



241, 313 

 Hales, Dr. 4 

 Jlall, 97, 104, 15-1, 439 

 HaJ), Sir J:ijnes, on Whinftone and Lava, 



8, 56 

 Harpe, de la, TO 

 Harriot, 68 

 Hartley, 129 

 Haffenfratz, 86 

 Hatchett, 172 



Hat-making, Letter on the Art of, 236 

 Hauy, 219, 520. His Memoir on the Ar- 



ragonite of Werner, 367. On a new 



Variety of the Zircon, 555 

 , Hawkins, 68 



Hearing, a Method of, by Means of the 



Teeth, 383 

 Heat, Experiments on the Rtfraflion of, 



by Dr. Herfchel, 364 

 Heat, Efteils of, on fpontaneous Light, 



455, 456 

 Heat, Experiments on the Tranfmilfion of, 



through Fluids, 537 

 Heckenwelder, M. on the Nine -Killer, 



73 

 Hefth, Cit. on the Pntum of Hahnemann, 



556 

 Henry, Mr, Wm. hij Objefts of Chemiftry, 



INDEX. 



144. On Prufflate of Pot-alh, 171. 

 His Experiments to decompofe the Mu- 

 riatic Acid, 209, 245. Experiments on 

 Galvanic Eleftricity, 223. On the Che- 

 mical Effefts of Galvanic Eleftricity, 

 223. Correftion of his Paper on Gal- 

 vanifm, 336. His new Work announced, 

 528 



Herfchel's Inveftigation of the Powers of 

 Prifmatic Colours to heat and illuminate 

 Objefts; his Inquiry into the Method of 

 viewing the Sun to Advantage, with 

 Telefcopes of a large Aperture ; Ex- 

 periments on the Refrangibility of the 

 invifible Solar Rays, &c. 320. Stric- 

 tures on, by Mr. Leflie, 344, 416. 

 Experiments on reflefVed Heat, ,360. 

 On the Power of penetrating into Space 

 by Teldcapes, 496, 550 



Hefphorus, 1, 3 



Hiero, 18 



Hildebrandt, Profeflbr, on Alum, 43 



Hilfcher, 524 



His Majefty, 289 



Hoepfner, 98 



Homberg, 156 



Home, Dr. J. 16 



Home, Everard, Efq. his Obfervations on 

 the Head of the Ornithorhynchus para- 

 doxus, 506 



Hooka, 18, 102, 265 



Hpoke, Obfervations on his Inventions for 

 regulating Timepieces, 237 



Hope, 10 



Hopkins, 42 ' 



Howard, 259 



Howard, E. Efq. on a new Fulminating 

 Mercury, 173, 200, 249 



Howitfon, 282 



Huddart, 298, 304 



Hulme, Dr. his Experiments on (he Light 

 fpontaneoufly emitted from various Bo- 

 dies, 421, 451 



Humboldt, 269, 215, 377 



Huntfman's Steel, 127 



Hutton, 61, 62, 157 



Hutton, Dr. on his Syfteni, 9 



Huttonian Theory, Obfeivations on, 97. 

 See alfo ICirwan. 



Huygens, 141 



Hydraulic Machine of Schemnitz, 18 



Hydraulic Engine operating by Mercury, 

 j:'^ccount of, 331 



Hydrogwi Gas, the phofphorated. Memoir 

 on, 474 



J. A. on the Ufe of CaoutchoMC, 282 

 Jars, M. on the hydraulic Machine at 



Schemnitz, 18 

 Jefferfon, 229 

 Jefftrfon, Mr. on the Difcovtrf of the 



Bones of an unknown Quadruped, 42, 



Ingenhoufz, 140 



Ink, Theory and Formation of, 353 



Ink capable of refifting the Aflion of Oxi- 



nated Muriatic Acid, 479 

 Inftitution, Royal, 48 



559, 



Inftnunent for repeating the Examination 



of Strata which have been penetrated by 



the common boriag Inftrument, 927 

 Irides round the Sun, Account of, 141 

 Iron, on the Deteftion of Impurities in, 



162 

 Iron, Sulphate of, 163. See alfo Berthol- 



let. 

 Iron, Native of Peru, 356 

 Inventions of Dr. Hooke for reguUtitg 



Time Pieces, Remarks on, 237 

 Inveftigation of the Powers of the Prifmatic 



Colours, to heat and illuminate Objefif, 



by Dr. Herfchel, 320 

 Jordan, G. W. 141 

 Juch, 138 ^ 



^ K. 



Kennedy, 60 



King, 340 



Kircher, 22 



Kirchmair, 3 



Kirwan, 17, 172, 200 



Kirwan, R. Efq. his thoughts on Mag" 



nctifm, 90, 94. On the Proofs of the 



Huttonian Theory, 97, 153 

 Klaproth, 30, 51, 61, 223, 308, 367 

 Klaproth's Analytical Effays, Tranflatlon 



of, 286 

 Keir, 1 75 

 Kennedy, Dr. 10, 104, 102, 106. His 



Analyfis of diiferent Species of Whin- 

 ftone and Lava, 407, 438 

 Kermes, Obfenations on that Mineral, 



382 

 Kolbe, 69 

 Kneading-Machiiie, Defcription of, made 



Ufe of at Genoa, 281 - 



Kruuitz, 1 



L. 



Laborie, 223 



Lalande, 305 ■ 



Lambert, his Photometria recommended, 

 350 



Lampadius, 49, 171, 515, 522 



Landriiini, 249 



Lapis Lazuli, on the Nature of its colour- 

 ing Principle, 309 



Lafterie, 555 



Lava, Sir James Hall on, 8, 56 



Lava and Whinftone, Dr. Kennedy's Ana- 

 lyfis of, 407, 43S 



Lavoifier, 103, 137 



Lainioy, 520 



L?sd Ore, analyfed by Mr. CTrfnevix, 219 



Le BeciC, ilenry J. on the Pearl S'ifliery, 

 21 



Leflie, on the abforbent Powers of differ^'ajt 

 Earths, 196. Obfervations .and Experi- 

 ments on Li£;ht and Heat, with Remarks 

 on the Enqunies of Dr. Herfchel refpeft- 

 ing thofe Objeas, 314,416 

 Lentz, 98 



Light, Obfervations on that which is fpon- 

 taneoufly emitted from various Bodies, 

 121, 451 



4 C 2 - Light ^ 



