554 



Ball, William, Efq. ii. 53; 



Ballosn, Air, Experiment with a parachute 



from an, i. 513 

 Bancroft, Dr. ii. 300 

 Banks, Sir Jofeph, i. 97, loi, 188, 190, 215, 



287, 28S, 308,40+. — ii. 47, 60, 72, 73> 



76, 80, 95, 96, 267, 276 

 Bannow, ancient Corporation Town of, de- 



ftfoyed by the Sands, ii. 384 

 Bar, compound, i. 66. Iron, Proccfs for 



making, ii. 65 

 Barbaroffa, Emperor Frederick, i. 139 

 Bardfley, Samuel Argent, M.D. on Party 



Prejudice, ii. 188 

 Bark, of Paraguatan, for dyeing, ii. 93 

 Barnard, Thomas, Efq. i. 190 

 Barometer, Lazowfki's, New, ii. n 

 Bartolin, ii. 199 

 Barton, ProfetTor, ii. 376 

 Barytes, Habitudes of, i. 529. To obtain 



pure, i. 53? 

 Bafaltes, ii. 289 



Bats, fuppofed fixth Senfe of, i. 474 

 Battery, Eleftrical, new Method of meafur- 



inf its Force, i. 156 

 Baufre, Sieur, Inventor of the horizontal 



Efcapement, ii. 53 

 Bauhin, Cafpar, i. 138 

 Baume's Method of Bleaching Silk, i. 32, 



88. Hydrometer, i. 37, 192. ii. 237 

 Beafts, Peculiarities of the Struflure of their 



Eyes i- 477- 

 Beaufuy, Mr. ii. 25;, 25S 

 Beccaria, i. 357, 396, 578 

 Becher, John Joachim, ii. 344. His Scheme 



of univerfal Writing, ii. 347 

 Becman, on univerfal Language, ii. 345 

 Beguelin, i. 106 



Behem, Martin, the firft Difcoverer of Ame- 

 rica, i. 73, 107 

 Behenira, Martin, or Behem, Chev. i. 107 

 Bellows, or blowing Machines, ii. 71 

 Benjamin, Purity of the Flowers of, n. 122 

 Bennet.Rev. Abraham, i. 16, 266, 270, 397 



's Eleftrometer, ii. 440 



Bentham, General, ii. 96 



Benzoin, Purity of the Acid of, ii. 122 



Bergman, i. 78, 212, 254, 313, 320. 34°- 



'i- 34i 37. 105, 191, 202, 207, 209, 213, 



340 

 Bernier, ii. 86 

 Bernouilli, Daniel, ii. 176. On Gunpowder, 



'•459 



Berihollet, i. 32, 46, 95, 142, 168. On the 

 Combinations of Oil with Earths, Alkalis, 

 and Metals, i. 170, 213, 268, 297, 313, 

 331. ii. 37, 54, I02, 105, 155, 156, 190, 

 268, 269. On the Zoonic Acid, ii. 367. 



Berry, Mr. ii. 477 



Berthoud, i. 61 



Berthout, Cit. Louis, ii. 237 



Beryl, Earth of, or Glucine, ii. 358, 360, 

 393 



Befnier, Father, on the Union of Languages, 

 ii. 345 



Bewicks, Mtff. ii. 63 



Bigueliii, i. 587 



Birch, broad-leaved American black, ii. 333 



Mr. ii. 420 



Birds' Eyes, Obfervaticns on, i. 474 



Biringuccio, ii. 89 



Biron, Cit. i. 529 



N 



D 



E X. 



Bitaube, Cit. ii. 23S 



Bitumen, Proportion! of Carbon in, i. 487. 



Elaftic, ii. 249 

 Bitumens, ii. 201, 248, 202, 204 

 Black, Dr. i. 239, 2S9 



Dye, ii. 338 



Blagdcn, Dr. Sir Charles, i. it8, 347, 49S 

 Blair, Dr. Robert, his Method of forming 



achromatic Lenfes with Fluids, i. i 

 Blanchard's Afcent by means of a Balloon, 



ii- 377 



Bleaching Raw Silks, i. 32, 88 



Apparatus for, ii. 271. Art of, 



by P. des Charmes, ii. 427. Of Prints, 

 Method of, ii. 165. Improved Proccfs of, 

 ii. 268 



Blondelin I'Hiftoire Naturclle dr. Valmont de 

 Bomare, i. 95 



Blow Pipe, Obl'ervations and Experiments on 

 the common, ii. 34 



Blowing Machines, ii. 71 



Blue, Prulfian, Enquiries concerning the 

 Nature of, by Prouft, i. 453 



Tournfol, Procefs for making, ii. 3 1 1 



Blumenbach, Mr. i. 256, 519. ii. 77 



Bodies, Inftrument for meafuring the Vo- 

 lumes of, by H. Say, i. 325 



Boelim, Martyn. See Behem 



Boerhave, i. 363 



Boiard, i. 201 



Bondt, i. 44 



Bones of living Animals augmented in Size 

 by the internal Ufe of Phofphate of Lime, 

 i. 201. Foffil, Cuvier on, ii. 220, 512 



Bonhomme on the Cure of Ricketis, i. 174, 

 200 



Bonjour, i. 9;, 142. On Nitre, ii. 23 



Boracic Acid, Examination of the Purity of, 

 ii. 121 



Borax, luminous Quality of, ii. 28 



Borda, ii. 38 



Borelli, ii. 128 



Born, Mr. ii. 248 



Borlach, Mr. ii. 72 



Bofcovich, i. 555 



BofTut, ii. 173, 178 



Botham, Mr. ii. 309 



Bouchad, Cit. ii. 239 



Bougies, furgical, to make, ii. 413 



Bouguer, i. 67. ii. 86 



Boulton and Watt's Steam Engine, ii. 229, 

 230,231,265 



Bournon, Count de, on Cryftaline Forms, ii. 

 540 



Bovey Coal, ii. 206 



Boyle, Robert, i. in, 120, 347 



Bradley, ii. 118 



Brand, Mr. ii. i 



Brafchi, Prince, ii. 95 



Brazil, Difcovery of, i. 7 5 



Brazilian Diamonds, Hiftory of, i. 24 



Bread, Method of making of, without Ycaft, 

 i. 267 



Breathing into eleftrical Jars to Increafe their 

 Capacity, ii. 530 



Brce, J. ii. 284 



Brick -making, ii. 498 



Brockbank, maintaining Power of his Time- 

 piece, ii. 59 



Brodbelt, Dr. Francis Rigby, i. 264 



Brook, A. i. 121. ii. 217. On the uncoatcd 

 Surface of electrical Jars, ii. 528 



Brook, Samuel, ii. 96 



Brougham, Henry, jun. 'Efq. i. 551. ii. 147, 



«93 

 Brown, Major, John, ii. 227 

 ■ William, M.D. on an univerfal writ- 



ten Charafter, ii. 190 " 



Dr.i. 336 



Bruce, Mr. ii. 254, 256 



Brugnatelli on Phofphorus, i. 444. On loud 

 Fulminations with Phofphorus, ii. 468 



Bruhl, Count, ii. 58 



Brydune, i. 225 



Buee, William Urban, Efq. on the Cultiva- 

 tion of the Clove Tree, i. 287 



ButFon, Count de, i. io6, 587. ii. 16 



Butter, keeps better after Fufion, ii. 357 



Byrne, John, ii. 224 



C. 



C.ibral, Albarez, i. 108 



Cairo, Inftituteof, ii. 522,548 



Caldera, Ri(berto, i. 25 



Caliinicus, ii. 90 



Caloric, Efffft of combuftible Materials, Prize 



Queflinn to determine the, ii. 328 

 Camphor, its rapid Motions upon Water, i. 



205. Speedy DilTolution produced by 



Effeft of Air and Water thereon, i. 206. 



Dccompofition of, ii. i;8. Oil of, ii, 99 

 Camphoric Acid, Proccfs for preparing, ii, 



«37 



Camus, James, i. 75 



Cit. ii. 236 



Candles rhfir J'.fFcft explained, i. 70 



Candle, Chinefe, i. 72 



CanncI Coal, ii. 204 



Canton, i. 270 



Caprino, cold Caves of, i. 231 



CaramueKhis Appar:it.Philofophique,ii. 346 



Carbon, Proportions of in Bitumen and Mi- 

 neral Coal, by Kirwan, i.487. Develope- 

 mcnt of, in vegetable Matter, ii. 208 



Carbonate of Potafli, ii. 369 



Carmineti BalTan', i. 335 



Carradori, M. Joachim, M.D. on natural 

 Phofphori, ii. 132 



Cartwright, Mr. his new Pifton for Pumps, 

 &c. ii. 364, 476 



Carysfort, Earl of, ii. 224 



Calfini, i. 99 



Count, ii. 128, 233, 447 



Caft Iron, ii. 104 



■ Steel, Properties and Ufes of, ii. 103. 



Manufafture of, ii. 102 



Cattk, Prices of at different Periods, ii. 284 



Cavallo, i. 16. On the Ele£lrical Multiplier, 

 i. 394. Freezing, i. 504 



Cavcndifh, H. i. 143, 140. 3 57, 499 



On the MeaCur^s of Eleftricity, 



ii. 216. On the mutual Gravitation of 

 Bodies and Denfity of the Earth, ii. 446. 



Caves emitting cold Winds, Account of, i. 

 229 



Cawley, i. 412. ii. 228 



Cement to clofe Vcfftls air-tight, i. 472 



Cementation of Iron, ii. 68 



Cefi, sold Caves of, i. 230 



Chalu', ii. 102 



Champy, J. P. on Nitre, ii. 23 



Changes of the Earth, Priie Queftion on the, 



ii. 238 

 Chapman, William, M.R.I.A. li 96 



Chaptal, 



