562 



N 



D 



X. 



Roy, General, i. i;i, 198 



Koyal Society, Donation to, i. 188 



Rozier, ii. 134 



Rule, Gunter's, Improvements in the Ufe 



of, i. 450 

 Rumford, Count, i. 67, 100. On Coloured 



Shadows, i. loi. His Prize Donation, i. 



j88. Effiys, i. 191, 238, zzg. On the 



Propagation of Heat in Fluid?, i. 289, 

 ' 341, 563. On the Force of Gunpowder, 



i. 4^9. ii. 85. Of an Heat excited by 



Friftion, ii. io6, 141. Contents of 

 ■ his Effay VII. on the Propagation of 



Heat in Fluids, ii. 143. On Heat, ii. 



160. His Effays, ii. 377. On the fup- 



pofed Chemical Properties of Light, ii. 



400, 453 

 Rupp.Theophilus Lewis, on Phlogifton, &c. 



ii. 190. On Bleaching, ii. 268 

 Ruffian Empire, Statiftical View of, ii. 47 

 Rufti, Dr. Benjamin, Account of the Sugar 



Maple, ii. 308 

 Rutherford, Dr. ii. 29 



Saccharinum (Acer),!!. 304 



Sadler, James, Efq. i. 44 j. His Air-pump, 

 ii. 30. His Furnace for Oxygen, ii. 33. 

 Defcription of his Steam-engine, ii. 

 228, 231. 



Sage, Mr. i. 494. B. G. ii. 31 



Sale of Paintings in Italy, i. '94 



Salmalius, i. 137 



Salt, Common, Table of the Specific Gra- 

 vity, of, i. 192 



Saltpetre, new and fpecdy Procefs for Re- 

 fining, by Chaptal, Champy, and Bou- 

 jour, ii. 23 



Saltonftall, Winthorp, on Septon, or Azote, 

 i. 240 



Salt, obtained without Artificial Heat, ii. 72. 

 Of Platina, i. 537. Method of Purify'ng 

 by Cold, ii. 9 1 



Sahs, on the Tables of the Compofition of, 

 ii. 340 



Sanftoriuson the Pendulum, ii. 51 



San Michel, ii. 89 



Santus Marinus, i. 139 



Sarafin, Mr. ii. 304 



Satellites, Inftrument for Exhibiting Jupi- 

 ter's, ii. 122. Of the Georgium Sidus, 

 ii. 240 " 



Satellitian, or Inftrument for explaining the 

 ' Phenomena of Jupiter and his Satellites, 

 by Mr. Pearfon, ii. 122 



SauITure, i. 220, 571. On the cold Winds 

 which iOTiie Out of the Earth, i. 229 



Savannahs of Guiana, ii. 303, 347. 



Savery, Captain, falfely accufed of pirat- 

 ing the Marquis of W'orCefter's Steam- 

 engine, i. 419 



Say, H. his New Method of determining 

 Specific Gravity, i. 325 



Scarpa, i. 256, 257 



Schalleru, Dr. i. 257 



Schedl, Hartfman, i. 75 



Schceie, i. 141, 268, 320. ii. 37, 43, 91, 



133. i68- 

 Scherer, Mr. i. 242 

 ■ Scheiner, Remark on his famous Obferva- 



tion of an Hilo, at Rome, ii. 487 

 Scherer, Dr. Alexander Nicholas, on Phof. 



phorus in Ajute, ii. S 



Schoner, ii. 84 



Schmeifier, M. i. 519 



School Polytechnic, i. 93, 141 



Scintillation of the Stars, ii. 85 



Scotus, i. 226 



Screw, on its Mechanical Conftruflion and 

 Ufes, i. 158 



Scylla, Defcription of, ii. 12 



Sea Sicknefs, cure of, i. 82. Encroachment 

 on the Coaft of Wales, i. 224. Hot and 

 cold Currents, i. 573. Effeft of the Sun's 

 Heat upon, ii. 15 



Segum, i. 26, 46, 271. ii. 339 



Sentbier, i. 48. On Water-fpouts, i. 577 



Seneca, ii. 137 



Serpentine, Magnetic Mountain of, i. 97 



S'Gravefande, i. 111, 376 



Shadows, Coloured, their Caufe and Eflfefls, 

 i. 181 



Shaw, Dr. ii. 250 



Sheep caufcd the Difcovery of cold Caves in 

 Switzerland, i. 23 i 



Sheldrake, T. on the Club-foot, ii. 144 



Shiviers, Dr. Conrad, his Perpetual Mo- 

 tion, i. 378 



Shot, patent Manufafture of, i. 263. Rifled, 

 Experiments made with, i. 382 



Shiickburgh Evelyn, Sir George A. Bart. 

 F.R.S. and A.S. ii. 96. On a Standard 

 for Weight and Meaiure, ii. 143 



Siberian Red-lead, New Metallic Acid in, 

 ii. 145, 441 



Siegling, Profeffor, i. 335 



Sight, Imperfeftions of, i. 549 



Silk, Raw, Bleaching of, i. 32, 88. Procefs 

 for dying Yellow, f. 92 



Silver Lea^ its Tliicknefs, i. 133. Fulmi- 

 nating, Experiments, and Obfervations on, 

 i. 296. Unfuccefsful Experiments to al- 

 loy it with crude Platina, i. 380. Mo- 

 nies, ii, 260 



Simmer, i. 396 



Simpfon, W. i. 138, 334 



Sinclair, Sir John, ii. 357 



Smeaton, Mr. John, F.R.S. i. »2i, 122, 

 Reports, ii, 47, 95. On Mills, ii. 461 



Smith, Mr. Pearce, i. 472. Dr. ii. 284 



Smoke, ii. 87 



Soap cf Wool, Experiments on, i. 40, 81. 

 Earthy and Metallic, by Berthollet, i. 170. 

 Decompofition of, i. 171, 540. Antimo- 

 nial, i. 540 



Society of Natural Hiftory of Paris, i. 24. 

 American Philofophical, ii. 376. Che- 

 mical, of Philadelphia, ii. 376. Of Civil 

 Engineers, Origin of, ii. 47. Of Civil 

 Engineers, ii. 95. Of Civil Engineers, 

 Members of, ii. 96. Of Edinburgh, 

 Tranfaflions of, ii. 191. Philofophical, 

 of Manchefter, Memoirs of, ii. 188 



Soda, fuperlaturated Borate of, luminous 

 Quality of, ii. 28. Separation cf the Sul- 

 phate of, from Salt-water, ii. 91. In 

 Volcanic Produftions, ii. 289 



Solar Spectrum, i. 15 



Soller, Cit. i. 21 1 



Sound, Experinncnts on the Propagation of, 

 by Perrole, i. 411. Intenfity of, i. 413. 

 Inftruments for conveying Obfervations 

 on, i. 417. Remarkable Phenomenon cf, 

 obferved by the Aeronaut Garnerin, ii. 

 377. Varieties of the fame Tone, ii. 188 



Spallanzani, Abb^ Laiaro, Profeffor, F.R.S. 

 &c. Travels in the Two Sicilies, &c. i. 

 48, 363, 600, On Scylla and Charybdis, 

 ii, 12, no 



Specific Gravities, Tables of, i. 1 17, 118, 119 



Specification, of a new Method of Tanning, 

 i. 26 



Speftrum, Solar, of uncommon Brilliancy, 

 i, 15 



Specula, Metallic, afford Colours by Flexion 

 and Rcfleftion, ii, 153, 197 



Spencer, Earl, his famous Well, ii. 25; 



Spirit Level, and Plumb-line, compared, 

 i. 134 



Spouts, Water, Account of the Appearance 

 of, by Michaud, i. 577 



Squinting, i. 549 



Stahl, i. 363, 485. ii. 43 



Stars, Scintillation of, ii. 8; 



Statics, ii. 88 



Statins, i. 137 



Steam-engine, Defcription of Capt. Savary's, 

 i. 419. Defcription of Mr. Kier's, i. 

 422. Prize Queftion on the Heat of, ii. 

 329. Governor for regulating the Mo- 

 tions of, ii. 46. Working by a Pifton, 

 Account of, ii. 228. Boulton and Watt's, 

 ii. 230. Sadler's, ii. 231 



Steam, Betancour's, Experiments on, i. 518 



Steel, New Analyfis of, by Vauquclin, i. 2 10, 

 214, 268. Method of feparating it from 

 Manganefe, i, 216. Tables of its component 

 Parts, i. 251. Procefs for difcoveriiig of 

 Phofphorus in, i, 254. Styrian, i, 328. 

 Mode of Hardening and Tempering of, i, 

 381. Imitation of Damafcus, i. 469, 

 Eafy Teft of its Uniformity, i. 470. Caft, 

 Method of welding with Iron, i. 575. 

 Natural, ii. 64. German, ii, 64, Ma- 

 nufaiture of, ii. 64, Caft, Manufafture 

 of, ii, 102, Properties and Ufes of va- 

 rious Kinds of, ii. 103. Method of try- 

 ing, ii. 104. Of Damafcus, i . 104. 



Stewart, Sir James, ii. 284. Dr. ii, 427 



Stock and Dies, for making very perfeft 

 Screws, i. 163 



Stodart, Mr. on the Temper of Steel, ii. 38.2 



Storch, H. on the Ruffian Empire, ii. 47 



Strabo, i. 107. ii. t6, 21, 238 



Strachan, Mr. i. 148 



Strap, on a Wheel, fingular Effeft of, i. 23 



Stream, Method of meafuring its Force, iii 

 462 



Strings, Elaftic and Mufical, i. 328 



Strontian, Obfervations on, by Pelletier, i. 

 518. Comparifon of, with Barytes, i. 510 



Sturmius, ii. 345 



Styrian Steel, i. 328, 535 



Sugir, Experiments and Obfervations on 

 the Nature of, by Cruicklhank, i. 337. 

 Hiftory of, ii. 136. Maple, ii. 304. Ana- 

 lyfis of, by Cruickfliank, ii. 406 



Sulphates of Iron, OxiJed in various De- 

 grees, i. 453. Of Soda, ftparated from 

 Salt-water, ii. 91. 



Sulphites, i. 316, 364 



Sulphureous Acid, Properties and Habitude! 

 of, i. 143, 313. Combinations of, i. 364. 

 Rfll£f of on Vegetable' Mntter, i. 3S'5. 

 Examination of the Purity of, ii. 118 



Sulzer, i. 519 



Suriurbrand, ii. 20; 



Survey 



