Rays, on the Number of primitive co- 

 lorific, in Solar Light, by Dr. Young, 



385 ■■ 



Reaumur, 26 



Red iulphurated Oxide of Mercury, Me- 

 thod detefting when adulterated, ICiO 



Red Oxide of Mercury, 162 



Reed, So 



Refraftion, fee Wollafton. 



Refraflion of invifible radiant Heat, Ex- 

 periments relative to, by Dr. Herfchel, 

 364 



Refrangibility of the invifible R.ays of the 

 Suu, Experiments on, 330 



Rennie, lij5 



Report concerning the Art of making fine 

 Cutlery, by W. N. 127 



Refearchcs, Chemical, &c. by H. Davy, 

 240 



Refin, Elaftic, contained in Opium, 383 



Revolving Doubler, Defcription of, by 

 W. N. 95 



Reynolds, 75 



Richter, 54 



Rinman, 308 



Roebuck, Mr, J. his Account of certain 

 Phenomena obferved in the Air Vault of 

 the Furnaces of the Devon Iron Works, 

 110 



Roebuck, Dr. 114 



Roemer's Planetary Wheel, 404 



Rouelle, 103 



Roume, 72 



Royal Inftitution, 48 



Royal Society of Copenhagen, Repetition 

 of its Queftions, 332 



Royal Society of London, Account of its 

 Tranfaaions, for 1800, 332 



R. T. on the Bolognian Phofphorus, 

 336 



Rubin de Cells, 356 



Rum, on its Improvement by Age, 282 



Rumford, 249. His Experiments on heated 

 Fluids, 533 



Rupp, 213 



Ryrie, Mr. Niel, 112 



Sage, 223 



Sandarac, on the true Origin of that Re- 

 fi]i, 369 



Sargeant, on an ancient Account of Parhelia 

 feen in Cumberland, 178 



SaulTure, 61, 98 



Scheele, 1 



Schemnitz, hydraulic Machine at, 18 



Scherer, 49 



Schneider, 2 



Schoulboe, M. on the true Origin of San- 

 darac, .}69 



Seymour, Lord Webb, 104 



Shaw, 369 



Sheep, Spanifii, Projeft for extending the 

 Breed of fine wooled, 289 



Shipping, Experiments to fire, by a fub- 

 marine Veflel, 234 



Silver, new Method of extrafting from 

 Copper-mat, 145 



Sinclair, Sir John, 140 



I' n: w e xl 



Spallanzani, 509 



Sparrman, 70 



Spirits, Query refpefliug the Amelioration 



of, 282 

 Staunton, 191 

 Steam Engine, Defcription -af -on? <>n the 



Principle of Savary, 545 ■ -' 



Steel, its Ofes in tlie Fabrication of fine 



Cutlery, 127 

 Stewart, 69 

 Stodart, 127 

 Strata, Defcription of an Inftrument for 



repeating the Examination of, 227 

 Sub-marine Veflel, Defcription of, 229 

 Sugar, from the Beet, Procefs for making, 



28 

 Sulphate of Iron, 163. Remarks on its 

 , Aftion upon nitrous Gas, &e. 377 

 Sulphur, the Golden, of Antimony, 383 

 Sulphuraied Oxide of Mercury, red, on 



the Deteftion of adulterated, 160 

 Sulphuric Acid, Method of obtaining, 



from the Refidue of fulphuric Ether, 

 .3j54 

 Sul'tzer, 122 

 Sun, furrounded by Irides or Coronx, 



141 

 Sun, Inquiiy into the Method of viewing 



with Telefcopes of larger Apertures, &c. 



320 

 Swanhard, Henry, the Inventor of etching 



on Glafs, 2 

 Swtet Muriate of Mercury, 160, 161 

 Syphon, Memoir on its Ufe for raifing 



Water in the Machine of C. Trouville, 



283 

 Syphon, new Application of» for raifing 



Water above the Surface of the Refer- 



voir, 547 



r. 



Table of Fufibilities, 65 



Table of Intereft, Conftruflion and Ufe of 

 an Univerfal, by Mr. Goodwyn, 434 



Table of the Lengths of Tubes of Alco- 

 grades, to (hew the Proportions of Al- 

 cohol, in 1000 Parts of any Mixture, at 

 different Temperatures, 431 



Tannin, Method of obtaining Pure, 350 



Teeth, on a Method of hearing by, 383 



Telegraph, Defcription of a very fimple, 

 144 



Telefcopes, Herfchel's Obfervations on their 

 Power of penetrating into Space, 496, 

 550 



Tennant, 248 



Thenard, Cit. on the Oxigenatlon of the 

 Oxide of Antimony, 525 



Theophiaftus, 3 



Thompfon, Dr. his Experiments to deter- 

 mine whether Fluids be Conduftors of 

 Caloric, 530 



Toys, Obfervations on rational Kinds of 

 of, 287 



Tranfaftions, Philofophical, Account of, 

 239 



Tranfaftions of tjie Royal Society of Edin- 

 burgh, 240 



Troniliiorf, 99, 382 



5^1 



Tungftcn, infuribility of, 191 

 Tuttifcorin, 22 



V. 



Vahl, 369 



Van Hauch, 169, 137 



Van Marunij 137 



Van Mons, 137, 173. His Defcription of 

 the fixed Alkali, 334 



Vauquelln, 137, 174, 219. His Analyfis 

 of the Melllte, 515 



Vegetables, Inftances of fulpended Anima- 

 tion in, 509 



Vegetation, on the Power of oxigenated 

 muriatic Acid in, 140 



Ventilator, Blaft, of Mr. Bofwell, 4 



Venturi, 120 



VelTel, Sub-marine, defcribed, 229 



Vldron, 383 



ViiKe, 299 



Vleck, Rev. Mr. V. '74 



Volta, 121, 215 



Volta's Galvanic Apparatus, Experiments 

 with, 179 



Volta, Pile of. Remarks of Col, Haldane 

 on, 241 



Von Crell, 138 



u. 



Urine, fee Animal Fluids. 



W. 



Wagenfeil, 3 



Walker's Steel, inferior to that of Huntfinan* 



127 

 Water, Good%vyn's Engine for raifing, 



165 

 Water, new Method of raifing, fee Syphon. 

 Water, Defcription of a Rotatory Engine 



for raifing, 466 

 Water, new Engine for raifing, fee Engine.. 

 Water, on raifing, by the Engine of H. 



Goodwyn, Elq. 342 

 Watfon, 345 

 Watt, 165 

 Wedgwood, 13, 104 



Weight and Meafure, on the Unities of, 163 

 Weldon, 287 

 Wells, 402 

 Wells, Obfervations on a Method of re- 



ftoringthe Utility of abandoned, 481 

 Werner, 367, 513 

 Wheel, adapted to Exprefs the unequal, 



angular Motion of the Planets, .404 

 Whinftone and Lava, Sir James Hall's Ex- 

 periments on, 8, 56. Analyfis of, by 



Dr. Kennedy, 407, 438 

 White Oxide ot Mercury, Teft for, 161 

 Widenman, 98 , 



Wiegleb, 137 ^ 



Wigand, 2 

 Willoughby, 68 

 Wilfon, 69 

 W. N. on the Revolving Doubler, 95^. 



His Remarks on the Pile of Volta, 241 



Wolhftprt,, 



