INDEX. 



471 



$06, 241, 343, 431 ; Mr. Galbraith 



on, 321. 

 Fire-ball, 74. 

 Fluids, Mr. Tredgold's new theory of 



the resistance of, 249. 

 F.R.S.'s reply to F.R.S.L.'s remarks 



on compound interest, 30. 

 Galbraith's mathematical tables, notice 



of an error in, 153. 

 Gas, inflammable, from salt mines, em- 

 ployed for producing light, 233 ; 



natural gas lights at Fredonea, 233. 

 Gases and the atmosphere, electricity 



of, 148. 

 Gauss, (Prof.) account of his "Disqui- 



sitiones generates circa Superficies 



Curvas," 331. 

 Gay Lussac on efflorescence, 231. 

 Geology, 132, 188, 225, 243, 289, 291, 



436, 441, 458, 463. 

 Geometrical problem, 234. 

 German Ocean, on the subsidence of, 



188. 

 Giddy, (E. C.) meteorological results 



of observations made at Penzance 



for 21 years, 173. 

 Oilbert (D.) on the regular or platonic 



solids, 161. 

 Giraffa, Sir E. Home on, 46. 

 Gmelin, M., his analyses of tourma- 

 lines, 460. 

 Gray (J. E.) on the nursing pouch of 



the Chama concamerata, 117. 

 Haidingerite, a new mineral, 146. 

 Haworth (A. H.) on new succulent 



plants, 183. 

 Haytor, iron mine at, Mr. Kingston's 



account of, 359. 

 Heat, effects of, upon sulphur, 152; 



heat given out during combustion, 



233. 

 Herapath (J.) On linear differential 



equations, 19, 210; replies to, 96, 



97, 262. 

 Hordein, analysis of, 150. 

 Hunefeld (Prof.) on titaniferous iron- 

 slag, 121. 

 Hutton's log tables, errors in, 154. 

 Hydrosilicite, a new mineral, 71. 

 Instruments, ancient, chemical exami- 

 nation of, 154. 

 Iodine in cadmium, 234. 

 Iodous acid, preparation of, 146. 

 Iron ore, green, analysis of, 234. 

 Iron -slag, titaniferous, Prof. Hunefeld 



on, 121. 

 Isopyre, a new mineral, 70. 

 Ivory (J.) on the theory of capillary 

 action, 1 ; on the figure of the earth, 

 165, 206, 241, 343, 431 ; notes re- 

 lating to the theory of Barker's Mill, 

 416. 



Karphosiderite, a new mineral, 397. 



Kendal, state of the barometer, &c. in 

 for 1827, 236. 



Kingston's (J. T.) account of the iron 

 mine at Haytor, 359. 



Lead, arseniate of, 234. 



Mageough (W.) on a new method of 

 mounting thermometers, 365. 



Main (J.) on the phenomena of wa- 

 ter-spouts, 114. 



Manganese, new chloride of, 151. 



separation of from lime and 



magnesia, 462. 



Marshall, (S.) meteorological summary 

 for 1827, 236. 



Mastodontes, 444. 



Membranes, motions of, Dr. Weber on 

 Lavart's experiments on, 336, 342. 



Mesitine-spar, a new mineral, 397. 



Meteorology, 78, 157, 173, 236, 312, 

 398, 467. 



Miller (Lieut.-Col.) on a percussion 

 rifle, 277 ; on a percussion shell, 358. 



Mineralogy, 70, 71, 146, 349, 397. 



Natural History, Mr. Bicheno on sy- 

 stems and methods in, 213, 265. 



Nixon (J.) on the heights of the prin- 

 cipal beds of Ingleborough Hill and 

 Moughton Fell, Yorkshire, 13; 

 heights of the principal hills in the 

 vicinity of Dent, Hawes, and Sed- 

 bergh, Yorkshire, 82, 189. 



— — — on errors in Hutton's log 

 tables, 154. 



Noutronite, a new mineral, 149. 



Obituary of Sir J. E.Smith, 307,391. 



Oistros, of the ancients, Mr. Bracy 

 Clark on, 283. 



Osmelite, a new mineral, 71. 



Patents, list of, 76, 155, 236,311, 466. 



Penzance, meteorological results of 

 observations made at for 21 years, 

 173. 



Peroxide of barium, 152. 



Petrosilex, rose-coloured, 149. 



Phillips (J.) on the geology of the 

 vale of Pickering, 243. 



.Phillips, (R.) on ascertaining the pu- 

 rity of sulphate of quina, 111. 



Phosphoric acid, its action on albumen, 

 462. 



Phosphorus and sulphur, on the flu- 

 idity of, 144 ; crystallization of phos- 

 phorus, 154. 



Platina-sand, Russian, 72 ; native pla- 

 tina, 232. 



Popocatapetl, 449. 



Potash, chromate of, and sulphate of 

 zinc, Dr. Thomson on the decompo- 

 sition of, 81. 



Prout (Dr.) on simple alimentary sub- 

 stances, 31, 98. 



