47(5 



Index, 



Chevreul, M. analysis of butter, 69— 

 on newly discovered animal adds, 209. 

 Chloride of barium, composition of, 340. 



■ — of calcium, compoMtion of, 343. 

 ■- ■ ■■ of mercuxy, crystalline form of, 



885. 

 — — of potassium, discovery of, in the 

 earth, 258. 



■ of strontium, composition of, 343. 

 Christie, Mr. on the diurnal variation of 



the magnetic needle, 68. 

 Chromate of ammonia, crystalline fonn of, 

 287. 



potash, crystalline form of, 



120. 



287. 



soda, crystalline form of. 



Chrome, existence of, in native platina, 

 198. 



Cinchonia, sulphate of, crystalline form of, 

 375. 



Citric acid, crystalline form of, 119. 



Qeavelandite, on, 394, 448. 



Cobalt, sulphate of, crystalline form of, 

 120. 



Coffee, on an improved method of making, 

 30. 



Combustion, slow, of tallow, oils, and 

 wax, 44. 



Congreve, Sir W. observations on his re- 

 port on gaslight establishments, 1. 



Conybeare, Rev. J. J. on the geology of 

 Cornwall and Devon, 35 — on a scarce 

 and curious alchemical work by M. 

 Maier, 242, 426. 



' -■ Rev. W. D. memoir illustra- 



tive of the general geological map of the 

 principal mountain chains in Europe, 

 214. 



Cooper, Mr. analysis of sulphate of nickel 

 and potash, 440. 



Copper, binacetate of, crystalline form of, 

 39. 



Cornwall and Devon, on the geology of, 

 35. 



Cornish rocks, on the nomenclature of, 

 46. 



Corrosive sublimate, crystalline form of, 

 285. 



Couch, Mr. on the use of the electrical 

 faculty of the torpedo, 156 — on the na- 

 tural history of fishes in Cornwall, 300. 



Crystalline forms of artificial salts, on the, 

 38,117, 284, 374,437. 



Cumming, Rev. J. list of substances ar- 

 ranged according to their thermoelectric 

 relations, and description of instruments 

 for exhibiting rotation by thermoelec- 

 tricity, 177— -ndescription of the galva- 

 noscope, 288 — on some anomalous ap- 

 pearances on the thermoelectric series, 

 322 — on thermomagnetic rotation, 436. 

 Cystic oxide from a dog, description and 

 analysis of, 316. 



Dalton, Mr. on corrections for moisture in 

 gases, 229. 



Daniell, Mr. on the change in the freezing 

 point of tliermometers, 309 — analysis 

 of his Meteorological Essays and Obser- 

 vations, 452. 



Darwin, Sir F. on the volcanic island of 

 Milo, 274. 



Davis, Mr. on the Chinese year, 308. 



Davy, Dr. on pneumato-thorax, 6 1 . 



Declination, on the change of, which has 

 taken place in some of tlie principal 

 fixed stars, 247. 



Deluge, on the, 344. 



Dewey, Prof, analysis of crystallized stea- 

 tite, 223. 



— — — Mr. on gas works, and the sub- 

 stances from which gas is usually pre- 

 pared, 401. 



Diamond, fusion of, 311, 468, 



matrix of, 154. 



Dobereiner, Prof, on the ignition of pla- 

 tina, &c. by hydrogen gas, 464, 466. 



Dulong and Thenard, MM. on the pro- 

 perty whicli some metals possess of fa- 

 cilitating the combination of elastic 

 fluids, 376. 



Duncan, Capt. notice of some newly dis- 

 covered islands, 379. 



Dupin, M. on the safety of steam engines, 

 70. 



E. 



Ear, human, and of the elephant, differ- 

 ence of construction between, 224. 



Electrical faculty of the torpedo, use of, 

 156. 



Emetic tartar, crystalline form of, 40. 



Expedition for the discovery of a north- 

 west passage, notice of the return of, 

 394. 



r. 



Faraday, Mr. observations on the purple 

 tint of plate glass as affected by light, 

 396 — on the change of musket balls in 

 Shrapnell shells, 398— letter from, re- 

 specting hLs historical sketch of electro- 

 magnetism, 67. 



Ferroprussiate of potash, cr}'Stalline form 

 of, 41. 



Forbes, Dr. on the geology of the Land's 

 End district, 47 — on the geology of St. 

 Michael's Mount, 51. 



Forchhammer, Dr. on the transition for- 

 mation of Sweden, 1 6. 



Franklin, Capt. notice of his narrative of 

 a journey to the shores of the Polar Sea, 

 54. 



