S6o 



N D 



X. 



M.thcrnnt'cs, Prizf Qoeftion in, ii. 318 

 M.Ujxrtuis, M. de, on Mulkai Inftruments, 



i. 416 

 Mayow, ii. 88 



Mazeas, Abbe, i. 106, 51)7, ii. 31? 

 Meafures, Table of French, and Compari- 



fon with ^"nj'ifli, i. 193, 199, 331, 200, 



ii. 284 

 Mechain, i. 46 

 Mechel, J. J. de, i. 95 

 Medici C<ifmo, ii. 12S 

 Melvill, i. -,85, 587 

 Mcmieux, Citizen, ii. 342, 347 

 !Mcn, their Mechanic Power, ii. 466 

 Mcndoza, Francifci, i. 140 

 Mercury, its Congelation, i. 143 



Purification of, i. i3i, iSz 



Merfennus, ii. 12, 344 



MeUier, ii. 23* 



Metals, their Expanfions by Heat, i. 58. 



Irritation in Wounds produced by, i. 



Metallic Bars, Flexure of compound by 

 Change of Temperature, i. 576. Acid, 

 new, ii. 145 



Mcteorologv, remarkable Phenomenon in, 

 i. 511 



Methods of Priming, i. 19 



Meyer, iVlr. i. 534 



Microfcopes, eal'y Method of forming Glo- 

 bules for, i. 134 



Michau, Cit. ii. 30; 



M'chaud, M. on Water Spouts, i. 577 



Michell, the Rev. John, his Apparatus for 

 Mtafuring Attraftion, ii. 446 



Minazi, i. 152 



Minafi Antonio, i. 225 



Mineral from New South Wales, Analyti- 

 cal Experiments on, i. 431;. ii. 72 



Mineralogical Defcription of Gibraltar, ii, 

 219 



Mines, Difcovery of the Wicklow Gold, ii. 

 223 



Miller, ii. 334 



Military Architefture, ii. 89 



Mills Abraham, Efq. ii. 224 



Milne, Robot, Efq. ii. 47, 96 



Milk, Sugar of, ii. 409 



Miichill, i. 481. On PhIogifton,i. 528. Dr. 

 On an Argillaceous Iron-ore, ii. 494 



Modulation, i. 48 



Molard, on Pinions of Glafs, ii. 1:22, 546 



Molefworth, William, Efq. ii. 227 



, Richard, Efq. F.R.S. ii. 227. 



Money, Origin of Metallic, ii. 260. Gold, 

 accounts of the Rccoinat;e of, and aftual 

 Q^^^ntity in Circulation, ii. 264. Depre- 

 ciati^in of at difteient Periods, ii. 284 



Ming.e, Cit. i. 46, 93, 209, 213 



on felting, i. 400. u. 102, 105, 190, 



235, 245 



Mimro, Dr. i. 265 



Moon, Speculations on its Want of Water, 

 ii. 87 



Morgana, Fata, account of, i. 2:5. ii. 416 



Morocco, Emperor of, ii. 25S 



Mwrton. the Right Hon. the Earl of, F.R.S. 

 ii. 96 



M"'ion in Fluids, Pri.KipIc of the lateral 

 Cinimunicition of, i. 524. Perpetual, 

 accounts of variou, Sciicmes for pro.tu- 

 cing, i. 334. J75- ^^ '^ Floating Lamp, 



ii. 167. In Fluids, lateral Communicaion 

 of, ii. 273 



Morveau, M. de, i. 39 



Mount Perdu, its calcareous Nature, ii. 510 



Mountain Magnetic, i. 97. 



or Mineral Pitch, ii. 203 



Mountains of Wales, Pofition, Figure, and 

 Strufture of, i. 220 



Mouffin Poufchin, Count Apollos, on Cinna- 

 bar made in the humid Way, ii. i 



Mouton, i. 194 



Movers, firft, on the Meafure and Expence 

 of, ii. 459 



Mudge, Capt. i. 150, 198. ii. 550. Mr. his 

 Efcapement, ii. 56 



Mulgrave, Lord, i. 572, 574 



Mullcr, John. i. 108. ii. 372 



Murhard, F.W.A. on Equations,!. 48 



Muriate of Potafli, Oxygenated, ii. 190. Pre- 

 paration and remarkable Properties of the 

 Oxygenated, ii. 290. 



Mufchenbroek, i. 121,411,30;. ii. 88,313 



Mufical Inftrument, Refonance of, i. 416 



Muffin, Pufchkin, Count, 011 Platina, Co- 

 balt, &c. 539 



N. 

 Nairne, Edw. Mr. ii. 420, 515 

 Naptha, ii. 202 



Naflau Saarbruck, Prince of, 494 

 Natural Steel, ii. 64. Hiftorv of Guiana, ii. 



^9"> 347- Philofophy, Prize Queftion 



in, ii. 329. Phofphori, Light of, ii. 132 

 Navarro, Peter, ii. 89 

 Navigation, Dangers of, in the Vicinity of 



Scylla and Charybdis, ii. 15 

 Nearchuj, ii. 136 

 Negro, remarkable Change of Colour in a, 



ii. 191 

 Nevill, Jacob, ii. 223 

 Neutrality of Salts by Decompofition, double 



interefting Qncftion concerning, ii. 340 

 Newcomen and Cawley, Inventors of the 



Lever Steam Engine, i. 422. ii. 231 

 Newton, Sir Ifaac, i. i, 15, 16, 152, 177, 



526, 541, 542, 552, 554, 558, 562, 5S9, 



593. Syf"' S^f'. 5^8, 590. ii. 53, m'«, 



152. 174, 195. His Fits of Tranl'miffion 



and Refleftion of Light, ii. 312 

 Nickalls, Mr. ii. 95 

 Nicola, i. 47, 48 

 Nitre, New Procefs for refining, ii. 23. 



A6^ion of on Gold and Platina, ii. 30 

 Nitrous Acid, Examination of the Purity of, 



ii. 119 

 Noel, i. 359 



Nollet, i. 229, 231, 234, 411 

 North Africa, Geceraphical Defcription of, 



by J. Rennel, E(q. ii. 2^3 

 Northumberland, Hugh, Duke of, ii. 334 

 North Wales, Geology of, i. 220 

 Notlem, Mr. i. 334 



O. 



Oak Bark, foluble Principles of, i. 273 

 Oak Iron, Wainfcot or Turkev, ii. }}^ 

 Obfervations, geological, on Nor:h Wales, 



i. 220. 

 Odorant Bodi':s. Experiments to render their 



Emanations perctptible, i. i;?,43i 

 Oil, Form-.it'on of, i. 5;. Its Compounds 



with Earths, Alkalis, and Metals, by Bei- 



thollet, i. 170. Volatile, their Congela- 

 tion by Cold, &c. i. 182, 227. Mdcufe 

 of for tempering Steel, i. 382. Purifi- 

 cation of, ii. 4t. Extraftion and Purifica- 

 tion of, ii. 9'j. Of Vitriol, Examinatioa 

 of the Pu;ity of, ii. ii8. Motion of 

 a floa-ing Lamp in, ii. 167 

 Oils, Volatile, their Congelation by Cold, 



&C. i. 182, 227 



Oli-fiant Gas, i. 44, 49 



Optical Glafs, Imperfeftions of, i. 181 



Optical Appearance, Account of Fata Mor- 

 gana, a remarkable, i. 225 



Ore of Tin, Analyfis of, i. 544 



Orfyrcus, M. i. 376 



Oriental Lapis Lazuli, Analyfis of, i. 77 



Ormond, Earl of, iL 224 



Ofwald, ii. 12 



Otto, Mr. on the Difcovery of America, 

 i. 73. '06. 107 



Overflowing Well, artificial, ii. 276, 



Ovid, ii. 20 



Oxendon, Hcnrv, Efq. ii. 96 



Oxygenated Muriate of Fotafli, Preparation 

 and remarkrib;e Properties of, ii. 290 



Oxvgen, in the Bladders of Fife, i. 264. 

 Prouft on its Tranfition, ii. 515. Gas, 

 Apparatus for difengaging of, by Sadler, 

 ii. 33 



Page, Sir Thomas, Knt. F.R.S. ii. 96 

 Paintings, Italian, Sale of by the French 



Repuhlic, ii. 94 

 Pajot dcs Charmes, ii. 427 

 Pallas, R. on Siberian Red Lead, ii. 387 

 Papaciii, M. i. 579 

 Papin, Dr. his Steam Engine, i. 421. ii. 



228 

 Papon, Cit. ii. 236 

 Parachute, Experiment with, by Garnerin, 



i. 5:3 

 Paraguatan, a new dying Wood, i. 93 

 Park, Mr. his Travels in North Africa, 



i. 253, 2S0, 329, 379 

 Parker. Mr. ii. 267 



Parr, M.D. his Theoryof Light, i. 351. ii.547 

 Partington, Mr. i. 397 

 Pafi.^raphy, ii. 342 

 Pcailon, G. M.D. on the Decompofition of 



Water by Electric Difcbarges, i. 241, 299, 



349. ii. 142, 235, 396 

 Pcarfon, Rev. W. on Gunter's Rule, i. 450. 



His Satellitian, ii. 122. His Eleftrical 



Machine, i. 506 

 Peart, E. M.D. on Phyfiology, i. 600 

 Pclleticr, i. 40, 160, 184, 518, 519, 529, • 



53''> 53 7- Account of the Life of, ii. 



37, 4*7. 

 Pelliam, Right Hon. Thomas, ii. 227 

 Pembcrton, Dr. i. 305. ii. 314 

 Pendulum, i. 57, 58, 59. ii. 40. Apparatus 



for preventing EfFefts of Cold and Heat 



on, i.65. Obfervations on, i. 429. Firft 



Invention of, ii. 52 

 Perception of Colours, anomalojs in Mr. 



D.ilton, ii. 18S 

 Perp^tunl Motion, i. 334. Accounts of 



various Sch.mes fur produc ng, i. 375 

 Perrut, ii. 103 



Pcrrole, M. Experiments on Sojnd, :. 411 

 I'errot, Mr. ii, 319 



Petrol 



