38G 



INDEX. 



pour in the atmosphere, 157 — on the 

 saline impregnations of rain, 100, 176. 

 Dandolo, Count, his method of cultivat- 

 ing the silk worm, 39. 

 Davy, Dr John, on the physical geogra- 

 phy of the south of Africa, 252 — on the 

 temperatureof the sea and air, in a voy- 

 age from St Helena to England, 246'. 

 Denmark, botanical intelligence from, 



359. 

 Depression of the horizon at sea, 365. 

 Despretz, M., on the heat disengaged 



during combustion, 369 

 Dichroism of axinite, 366. 

 Diploite, Professor Gmelin's analysis of, 



287. 

 Ducom, M., his cylindrical artificial ho- 

 rizon, 341. 

 Echinodermata of the Firth of Forth, 77. 

 Elephant, fossil, discovered in France, 



186. 

 Errran< Professor, on the motions of con- 

 ducting liquids electrified in mercury, 

 195. 

 Euchroite, a new mineral species, de- 

 scribed, 133 — analysis of it by Dr E. 

 Turner, 301. 

 Evans's method of roasting coffee, 343. 

 Fergusonite, a new mineral, described, 



375.. 

 Fern, male, analysis of its root, 176. 

 Fire-arms, method of preventing their 



accidental discharge, 316. 

 Fleming, Dr, on the Neptunian forma- 

 tion of siliceous stalactites, 307- 

 Fluellite, a new mineral, 178. 

 F"oggo, Mr John, jun. on the Echino- 

 dermata of the Firth of Forth, 77 — on 

 an insect of the genus Urocerus, found 

 in the wood of a table, 85. 

 Freezing water, apparatus for, 148. 

 Furnace for condensing smoke, &c. 342. 

 Galls, on their nature, 376. 

 Gas from oil, oh its illuminating power 

 compared with that from coal, 324,339. 

 Gmelin, Professor C. G. on the analysis 

 of a peach-blossom coloured mica, 199 

 — on a new formation of anhydrous 

 sulphuric acid, 244 — his analysis of 

 helvine, 268 — his analysis of diploite, 

 287- 

 Gmelinite, a new mineral species, describ- 

 ed, 262. 

 Godin observes the diurnal variation of 



the barometer, 336. 

 Gordon, Mr, on a sepulchral urn, 360. 

 Govan, Dr, on the natural history of the 



Himalayah Mountains, 17, 277. 

 Gowan's herbarium, 184. 

 Granite, on its distribution in Scotland, 



236. 

 Greville, Dr, on the genus Hookeria, 221. 



Guinand, M. account of his life, and of 

 his process for making flint-glass for 

 achromatic telescopes, 348. 

 Haidinger, Mr, on the specific gravity of 

 several minerals, 67 — on the regular 

 composition of crystallized bodies, 88 

 — on euchroite, a new mineral specie?, 

 133 — on trona, the native carbonate 

 of soda, 325 — on picrosmine, a new- 

 mineral species, 375. 



Hamilton, Dr Francis, on a plant allied 

 to the genus piper, 9 — on the frontier 

 between Bengal and Ava, 48. 



Harmotome, analysis of, 371- 

 Hatching of fish in China, 376. 



Helvine, Professor Gmelin's analysis of, 

 268. 



Herschel, Mr J. F. W. on the motions of 

 conducting liquids electrified in mer- 

 cury, 193 — on the absorption of light, 

 344. 



Hibbert, Dr, on the dispersion of stony 

 fragments, 208. 



Himalayah Mountains, on the natural 

 history and physical geography of, 17, 

 277. 



Hooker, Dr, on the botany of America, 

 108 — on the genus Hookeria, 221 — 

 his Muscologia, 185. 



Hookeria, on the genus, 221. 



Horizon artificial, M. Ducom's, 341. 



Hydrocyanic acid, on its counter-poisons, 

 214. 



Ice-houses, on natural ones in Noith 

 America, 187. 



Incandescent bodies, polarisation of the 

 light of, 365. 



Indigo, how to determine its value, 149. 



Innes, Mr George, on the celestial phe-> 

 nomena, 189,381 — his tide tables re- 

 commended. 



Inundation, remarkable one, in Sweden 

 and at St Petersburg!), 367. 



Inventions, decisions on disputed ones, 

 1 43, 33&— mechanical ones, history of, 

 143, 342. 



Iron, native, malleable, on the great mass 

 of from Louisiana, 138. 



Jeffrey, Mr, his furnace for condensing 

 smoke, 342. 



Jenning's improved gas burner, 344. 



Knox, Dr, on the theory of the existence 

 of a sixth sense in fishes, 17. 



Lamantine, 186. 



Lapidary's wheel of the Hindoos, 344. 



Lerna?a, 187. 



Leslie's photometer examined, 321. 



Levyne, a new mineral, described. 332. 



Lizars, Mr, his work on ovaria announ- 

 ced, 379. 

 Liquids, on their motions when electrU 

 fied in mercury, 193. 



