ss^ 



I 



N 



D 



X. 



Haidinger, M. i. 404. ii. 76 

 Haighton, John, M.D. on Aaitnal Impreg- 

 nation, i. 191 

 Hair, Nature and Texture of, 1.400. Balls 



in tlic Stomach of Animals, i. 401 

 Haldane, Col. Ne"- Method of Meafuring 



the Fijrce of an Eloflrical Battery, i. 156. 



On Lightni.ig, i. 433 

 Hall, Sir James, Bart. F.R.S. and A S.S. 



Edin. on the Origin and Principle of 



Gothic Architefturc, ii. 192 

 Hall.W. Efq. his Account of a fingulaf Halo 



of the Moon, ii. 485 

 Haile, i. 174, ioj 

 Haller, i. 305, 477. ii. 72 

 Halley, ii. 85 



Halo, finguiar, of the Moon, 11.485 

 Hamilton, Dr. i. 32 



Mr. 1. 146 



Sir William, i.jjo 



. Duke of, i. (177 



Reverend, Mr. on the Climate of 



Ireland, ii. 3S i, 43 i 



Hanbury, ii. 334 



Hardnei's and Tenacity in Steel are diftinft 

 Qualities, i. 3S1 



Harmony, Trcatifc on, i. 48 



Harrifun, Mr. John, i. 59 



Hartley, Mr. on the Temper of Steel, i. 382 



Harp Eolian, Defcription of, ii. 12 



Harris, ii. 122 



Hafienfratz, ?4r. ii. 209 



Hatchctt, Charles, Efq. F.R.S. i. 54 5. On 

 the Elaftic Bitumen, ii. 201, 248. On 

 the Sydney Earth, ii. 143 



Hats, Improvement in the Manufafture of, 

 i. 399. Manufa^ure of, ii. 467, 509 



Hatton, his Univerl'al Meafure, i. 65 



Haukfbee, i. 306 



Hauy, ii. 415. 



Heat, Prise Medal for Difcoveries on, i. 

 18S. Its Propagation in Fluids, by 

 Count Rumford, i. 289, 341, 563. La- 

 tent, (hewn by the Recovery of Ignition, 

 i. 38 1. Of the Globe, equalized by VVater, 

 i. 567- Excited by Friftion, by Count 

 Rumford, ii. 106. Contents of Count 

 Rumford's Seventh Eflay on the Propaga- 

 tion uf, ii. 143. Experiments on, by 

 Count Rumford, ii. 160. Fluids arc Non- 

 Conduftors of, ii. 160. Intenfe, though 

 not perceptible, ii. 166. For Chemical 

 Expctiments, economical Mode of ob- 

 taining, ii. 209. Obfervations on,ii. 397. 

 Dr. Parr's Theory of, ii. 547 



Hecht, L. i. 53. ii. 37* 



HcUins, Rev. Ji.hn, F.R.S. on the Compu- 

 tation of a flowly Converging Series, ii. r43 



Henry, Mr. William, on Carbon, ii. 141 



Hcraclides, ii. 185 



Herbclot, ii. 256 



Hergifweil, Cold Caves of, 1.251 



HermbftsEdt, M. i. 519 



Hero, Pneumatics of, li. 1J7 



Herodotus, ii. 256 



Herrera, i. 108 



Herfchell, William, on'the Satellites of the 

 Georgium Sidus, ii, iz2, 142, 240 



Hcrz, Mr. i. 361 



Hefychius, ii. 16 



Hicdcnburg, on Polynomials, i. 47 



Hi elm, i. 496 



Hijrgins, Br. M.D. on FuhiiuicLting Gold 

 and Silver, i. 196. ii. 246 



Hildebrandt, M.G.F. Elements of Che- 

 miilry, i. 239 



Hiftory of Sugar, ii. i?6 



7 — Narural, of Guiana, ii, 297, 347- 



Holiaiul, Philemon, ii, JS4 



Holme, Dr. on the Invtrfe Method of Cen- 

 tral Forces, ii. iqo 



Home, Everard, Dc. i. 191, 308,474, 548, 



55° 

 Honey, ii. 409 

 Hooke, Robert, ii. 51. His Experimental 



Proof of the Earth's Rotation, ii. 84, 88, 



312, 3>9'346 

 Hnpc, Dr. i. 519, 530, 537. ii. 192, 213, 



2ti7 



Hopkinfon, i. 13 



Hopfon, Dr. ii. 514 



Horn, Subfliture for, ii. 412 



Horils, their Power,' ii. 4O6 



Hurcou's Rule, i. 452 



Horizontal Refraftion, ftrange Appearances 



of, i. 146. Elcapement, ii. 53 

 Hoffack, Dr. on Vifion, i. 308 

 Houghton, Major, ii. 28 1 

 Houillt, i. 2 to 

 Howard, W. i. 431 

 Hoyle, M. Thomas, jun. on the Oxygenated 



Muriate of Potafh, ii. 290 

 HubcTt, Cit. ii. 95 

 Huddart, on Horizontal Refraftors, i. 146, 



igr, 227- ii. 47, 96 

 Hughes, Rev. Mr. ii. 367 

 Humboldt on Galvanic Imitation, i, 256, 



335. 3<'3 



Hume, Dr. ii. 289 



Hungarian Bread, i. 267 



Hungary. Travels in, i. 95 



Hunter, John, Mr. i. 308, 310, 357 



Huntfman's Steel, i. 576 



Hufard, Cit. i. 239, 529 



Hutton, Dr. ii. 285 



Huvghtns, i. i, 8, 57, 541. ii. 40. On the 

 Pendulum, ii. 51 



Hydraulic Phenomena, ii. 422 



Hydrogen carbonated, i. 44, 49. Gas, Ap- 

 paratus for producing Water from, ii. 235 



Hvdrogtn, Propofal to fubftitute the Term 

 Phlogifton for, i. 481 



Hydrogeneous Gas, Experiments on Car- 

 bonated, by Mr. Henry, ii. 241 



Hydrometer, i. iii. ofBaume, i. 37 



Hydroftatic Prefj of Bramah, i. 29 



Hygrometry, i. 511 



I. 



Ibn Al, Wardi, ii. 256 



Ice, flow Fufioa of, at the Bottom of a 



Veffel of boiling Water, i. 343 



Fufion of, by Water, i. 563 



Ground, Phenomena of, ii. 164 



Iceland, Cryftal, ii. 153, 198 



Ignition fuddcnly incrcafed by latent Heat, 



i. 382 

 Immerfion of Infc£ls in fermented Liquors, 



ii- 3 53 

 Imrie, Major, his Defcription of Gibraltar, 

 ii. i8j, 19;, 219 



Inflammation of combutllble Subftances by 



Kriftion, ii. 292 

 Inflexion of Light, i. 13, 58(1, 5:1 

 Jngenhouti, Dr. i. 83. ii. 420 

 Inlcfts, fuj-pofcd revival of, after Inimfrfion 



in fermented Liquors, i'. 3^3 

 Inftitiition for iDcclianical Ir.ii-rgvciTients, i. 



55' 

 Inftiument, new eleftrical condcnfing, i. 16 



New Weather, ii. 11. For E.uling, ii, 



429 

 Inteiility of Sounds, i. 413 

 Inventions, Difficulties attending, i. 20. H6\v 



far thuy ought to be public Property, i, 



400. Chemical and Mechanical, their 



Charadfers, ii. 309 

 Ireland, Change of Climate in, its. Caufes, 



ii. 381. Gold Mine in, ii. 213 

 Iris, artificial, for Improvement of Tele- 



fcopes, i. 180 

 Irritation, Galvanic Effeft of, on Wounds, 



i. 256 

 Iron, Method of feparating it from Man- 



gancle, i. 210. Procefs for difcovering 



Phofphorus in, i. 254. Sitlphates of, 



Oxidcd ill various Degrees, i. 453. 



Prulllates of. White and Blue, i. 454. 



Eafy Teft of its Uniformity, i. 470. 



Method of welding, with Call Steel, i. 



575. Bar, Procefs for making, ii. 65. 



Combuftibility of, ii. 64. Crude, faid to 



have been rendered Malleable as it came 



out of the Mould, ii. 356. Oak, ji. 335. 



Ore, Argillaceous, ii. 498 

 Ifaiah, Sugar mentioned in, ii. 136 

 Ifidorus, ii. 16, 135 

 Ivory, James, A.M. new Series for the Rcc« 



tiiication of the Ellipfis, ii. 192 

 Irvine, Dr. i. 286, 289 



J- 



Jaeger, Dr. ii. 9 



Jamcfon, Dr. i. 286 



Jars, ii. 70, 102 



Jars, Mr. i. 496 



Jeremiah, Sugar mentioned in, ii. 236 



Jeffop, William, Efq. ii. 47, 95 



Jet, ii. 204 



Jewellers' Fail, Beautiful, ii. 355 



John, II. i. 109 



Jones, William, on Geometry, Sec. i. 192 



Journal des Savans, Account of, i. 44. Po- 



lytechnique, i. 93 

 Juba, i. 137 

 Jupiter, Inftrument for exhibiting its Moons, 



ii. 122 

 Jurin, Dr. i. 305 

 Juifieu, Citizen, ii. 306 



K. 



Kalm, ii. 304 



Kant, Mr. ii. 347 



Keith, Alexander, Efq. F.R.S. and F.A.S. 



Edin. Defcription of a new Barometer, ii. 



192 

 Kennedy, Dr. on Pumice and Lavas, ii. 



289 

 Kepler, i. 305 



Kicr, his Steam-Engine, i. 422 

 Killingtr, Mr. i. 98 



Kircber, 



