INDEX TO VOL. IX. 



Achromatic telescopes, on the con- 

 struction of large ones, 126 — large 

 one by Lerebours, 170 — Mr Barlow's, 

 220 

 Adie, Mr, his Meteorological Register 

 kept at Canaan Cottage. 187, 188, 374 

 Alcoates, on the formation of, 351 

 Allan, Thomas, Esq. on a mass of native 



iron from Peru, 259 

 Aluminium and its compounds, 177 — 

 chloride of, 177 — metallic, 178 — sul- 

 phuret of, 355 — phosphuret of, 356 

 — seleniuret of, ib — arseniuret of, ib. 

 — alloy of tellurium and, ib. 

 Anemoscope for ascertaining the direc- 

 tion of slight winds, 1 67 

 Ants, on a battle of, 154 

 Auroras Boreales at Edinburgh, 129, 



138 

 Auroral arch seen at Kendal, 102 

 Balloons, on the origin of, 173 

 Barlow, Professor, on achromatic tele- 

 scopes, 220 

 Barometer, on the diurnal variation of, 

 at Paris, 72 — on the effect of wind 

 upon it, 77 

 Baryta, on the changes in the minerals 



that contain it, 290 

 Bees, on the economy of, 331 

 Boa Constrictors, on one of the brood of, 



153 

 Boobon, on the great cavern of, 51, 54 

 Borneo, on the diamond and gold mines 



of, 123 



Botryogene, a new mineral described, 49 



Bouvard, M. on the diurnal variation of 



the barometer, 72 — on the influence 



of wind on the barometer, 77 



Breton, Mr P. on the poison with which 



the Nagas tip their arrows, 217 

 Brewster, Dr, on a new cleavage in cal- 

 careous spar, 31 1 

 Bromine in the Baltic waters, 358 

 Bronzite, 363 

 Brown, R. Esq. on the pollen of plants, 



336 

 Burney, Capt. on the lizard of Siam, 



100 

 Cadmium found at Freiberg, 175 

 Calcareous spar, on a new cleavage in, 



311 — on the singular form of, 314 

 Campbell, Colonel, on the earthquake at 



Bogota, 368 

 Candles, improvement on, 336 

 Chalk, formation of Denmark, 56 



Chlorine, on its combinations with prus- 

 siate of potash, 352 



Chlorite, analysis of, 175 



Chloropheite discovered in Northumber- 

 land, 365 



Chromic acid, new method of preparing 

 it, 175 



Cleavage in calcareous spar, a new one 

 described, 311 



Comet, on Encke's periodical one, 169 



Crocodile, on the service performed to it 

 by the Trochilos, 68 



Crystallization, on the influence of air 

 in, 349 



Crystals, on the expansion of by heat, 

 173 



Damp, on protection against it, 336 



Datholite, analysis of the, 179 



Davy, Sir H. on the colour of water, 

 325 — on the natural history of the par, 

 327 — on the migration of eels, 328 



Diallage, 361— metalloidal, 362 — crys- 

 tallized, ib. 



Diamond mines of Borneo, 123 



Dog trains of the north-west, 155 



Duvaucel, M. on the cave of Boobon, 51 



Dutrochet, M. his discoveries in vege- 

 table physiology, 103, 318 



Earthquake at Bogota, 368 



Eels, on the migration and generation of, 

 328 



Electricity, on the influence of on odours, 

 355 — on the production of fulminary 

 tubes by, ib. 



Endosmometer described, 317 



Endosmose discovered by M. Dutrochet, 

 103, 317 



Epilobium Alpinum found in England, 

 366 



Erinite, a new mineral described, 93 



Fahlunite, analysis of, 361 



Flora Danica, account of the, 365 



Fox, R. W. Esq. on the steam conden- 

 sed by different vessels, 232 



Forchhammer, Dr, on the chalk forma- 

 tion of Denmark, 56 



Fulminary tubes produced by electricity, 

 355 



Funchal, mean temperature of, 171 



Furia infernalis, 156 



Gas, on a new combustible one, 346 



Gerard, Capt. P. on the climate and agri- 

 culture of Soobathoo and Kotgurh, 

 233 



Gold mines of Borneo, 123 



