INDEX, 
423 
Dropping apparatus described, 418. 
Dufour, Lieut. Col., on the ice-cavern of the Rothorn, 290. 
Dutch ashes used for manure, 195. 
Dynameterfov measuring magnifying powers, 182. 
E 
Eclipses, on the visible solar and lunar ones for 1823, 174. 
Earthquake among the snows at the source of the Ganges, 235. 
Egg, on the changes in the, during incubation, 63. 
Electro-magnetic experiments, account of a series of, 36 8 . 
experiments and apparatus described, 371. 
apparatus of Dr Seebeck and M. Erman, 399» 
Electro-magnetism, on the mathematical laws of, 368. 
Elk, fossil, of the Isle of Man, 198. 
Erman, Mr, his electro-magnetic apparatus, 399- 
Escapement, account of Mr Whitelaw’s new one, 27- 
F 
Faraday, Mr, his electro-magnetic apparatus described, 371, 378. 
Farquharson, Rev. James, on the order of the appearance and progress 
of the aurora borealis, 303. 
Fermenting pond in Massachusets described, 204. 
Fishes, on the limits of their occurrence in high stations, 198. 
Flauguergues , M., on variations in the bulbs of thermometers, 397- 
Fleming, Rev. Dr, on the revolutions of the animal kingdom, as indi- 
cated by geognosy, 1 1 0. — his gleanings of natural history during a 
voyage on the coast of Scotland in 1821, 293. 
Fluid, on a new one, with remarkable physical properties, 400. 
Fothergill, Mr, on the economy of the toad, 411. 
Fossil elk of the Isle of Man, 198. 
Forrest, Mr George, on a new percussion lock, 24. 
Fresh water formations of Italy, observations on the, 92. 
Fresnel, M., on a new lamp, 383. — on the double refraction in com- 
pressed glass, 393. — on the ascent of clouds in the atmosphere, 397^ 
G 
Galvanic battery, on the ignition of wires by it, 88. 
Ganges, account of Capt. Hodgson’s journey to the sources of the, 23L 
Gay Lussac, M. on the suspension of clouds, 398. 
General science, notices in, 200, 415. 
Glass compressed and rapidly cooled, on the double refraction of, 392. 
Gleanings of natural history during a voyage on the coast of Scotland 
in 1821, 293. 
Granite, secondary, 403. 
Greece, observations on, by Mr Hughes, 206. 
Green fire, method of making it, 187. 
Greville, Mr R. K. on a new genus of plants of the order GastromyciV 
256. — his Scottish Cryptogamic Flora, notice of, 407. 
H 
Haloes, on the theory of, 394. — on the method of forming them arti- 
ficially, 394. 
Harvey, , Mr George, on the increase of the population of North Arne- 
