388 



INDEX. 



Cyanuret of mercury, on the formation 



of the, 245. 

 Decrease of heat, demonstration of Mr 

 Leslie's formula for it, 96. 



Decomposition of bodies, on the natural, 

 116. 



Deutschland's Flora analysed, 350. 



Diamond mines of Bundelkund, 376. 



Double star of 61 Cygni, 180. 



Drummond, Lieutenant, on an appara- 

 tus for producing intense light, 319 



Dyce, Dr. on a new method of blasting 

 granite, 339. 



Earth, ellipticity of at Port Bowen, 179. 



Earthquake in the Mediterranean de- 

 scribed, 222. 



Eclipse of the sun on the 29th Novem- 

 ber 1826, 71- 



Electric effects of contact, on the law oi, 

 as produced by change of temperature, 

 385. 



Ellis, Rev. W., on the burning chasms 

 of Ponohohoa, 303. 



Eustachian tube, on deafness arising from 

 it, 366. 



Explosion of a volcano in the Andes, 375. 



Eye, on its vision of ocular spectra, 259. 



Eyes of insects, on their structure, 297- 



Ewing, Mr William, on the structure 

 of the eyes of insects, 297. 



Fire-fly, on its phosphorescence, 366. 



Flames, on coloured ones, 77- 



Fluids, resistance of, prize offered for ex- 

 periments on the, 367- 



Fluids in minerals, on the refractive pow- 

 er of the new ones, 122. 



Foggo, Mr, on the temperature of places 

 in Ceylon, 141— his meteorological ob- 

 servations made at Leith, 190 — on the 

 meteorological journals kept at Seringa- 



patam 249 his elementary treatise 



on meteorology, 370. 



French, Mr, rates of his chronometers, 

 365. 



Gallapagos islands described, 210. 



Gas lamp, a self-generating one describ- 

 ed, 344. 



Gay-Lussac, M. on some sulphurets, 110. 



on the reciprocal decomposition of 



bodies, 116. 



Gay-Lussite, a new mineral, 372. 



Gerard, Captain A. account of his survey 

 of the valley of the Setlej, 270. 



Germany, on "the state of botany in, 350. 



Glass, on a new method of manufactur- 

 ing it, 349. 



Glow-worm, on the phosphorescence of 

 it, 367. 



Gold mines discovered in Columbia, 323. 



Gold,, Mosaic, on its composition, 344 . 



Granite, on a cheap method of blasting 

 it, 339, 



Hancock, M., his substitute for leather, 

 345 — his improved ropes, 346. 



Hansteen, Professor, on the magnetic 

 poles of the earth, 65 — on the mag- 

 netic intensity of the earth, 218. 



Hare, Dr, his litrameter, 368. 



Harvey, Mr, on the effects of time in 

 some cases of vision, 1 14. 



Heat, notice of the great heats in June 

 1826, 240. 



Henry, Dr, on a compound of hyponi- 

 trous and sulphuric acids, 181, 



Herschel, the planet, its occultation by 

 the moon, 178. 



Himalaya mountains, account of the re- 

 cent excursion of Messrs Gerard among 

 them, 270. 



Hodgkinson, Eaton Mr, his observations 

 on Mr Barlow's theory of the strength 

 of materials, 17 L 



Homo, on the genus, 33. 



Hughes, Rev. Mr, on an optical pheno- 

 menon seen on the top of Mount Mtna, 

 227- 



Humboldt, Baron, on the discovery of 

 platinum and gold mines in Columbia, 

 323. 



Humidity, on a process for preserving 

 substances from, 169. 



Hyamas, on the habits of, 43. 



Hydrostatic balance, on an extremely 

 cheap and delicate one, 118, 



Jacquin, Baron, notice of, 366. 



Iguana, a new species of, described, 213. 



Innes, Mr George, on the solar eclipse 

 of the 29th November 1826, 71. 



Insects, on the structure of their eyes, 



297- 



Iron, metallic, on its oxides, 300. 



Juan Fernandez, island of, described, 

 205. 



Kakoxene, anew mineral, described, 163, 



Knox, Dr, on the size of the teeth in 

 sharks, 16. 



Kriel, Mr, his meteorological observa- 

 tions at Batavia, 268. 



Lead, on the composition of the native 

 phosphates and arseniates of, 



Leather, on a patent substitute for, 345. 



Leaves, on the fall of, 330. 



Legnay, M. on the manufacture of glass, 

 349. 



Lepidolite, analysis of two varieties of, 

 162. 



Light, method of producing a very intense 

 one, visible at great distances, 319. 



Litrameter, Dr Hare's, 368. 



Lock, description of an improved mor- 

 tise one, 350. 



Madeira, description of the island of, 

 197- 



