^08 INDEX. 
Haycrafij Mr, on the specific heat of the gases, 871- 
Heat produced in the skin by chlorine, 180. 
Heavy-spar, analysis of, SgS. 
Henslow, Mr, on the geology of Anglesea, 37fi* 
Herschel, Mr J. F. W. his barometrical observations on the fall of the 
Staubbach, 224'. — on a new method of separating iron from other 
metals, 300.— on the determination of the radii of double achromatic 
object-glasses, 361 . — on plagiedral quartz, 379- 
Heulandite, a new mineral described by Mr Brooke, 112. 
Hihbert, Dr, his description of the Shetland Islands, 240. 
Hill, Mr, his new method of making starch, 303- 
Holyoke, Dr, his meteorological observations for thirty-three years at 
Salem, 34.9. 
Honey-eater bird, instinct of the, 193. 
Hooker, Dr, observations on his Flora Scotica, 145. 
Horner, Dr J. C. on the specific gravity of sea-water, l6l. 
Hors field, Dr, his zoological researches, 184. 
Hot-springs of Furnas described, 306\ 
Humboldt, Baron, on the distribution of vegetable forms, 273. 
Huygens the undoubted inventor of pendulum-clocks, 198. 
Hydrate of magnesia, native, 391. 
1 
Ice-houses, account of the natural ones in Connecticut, 358. 
Incombustible cloth, hov/ to make it, 401. 
Insects, on the geographical distribution of the European Coleopte- 
rous ones, 51, l6‘8. 
Inver ary, earthquake at, 191. 
Iron, Mr Herschefs method of separating it from other metals, 300. 
red-hot, Mr Barlow's discoveries respecting its action on the 
needle, 360. 
Iron-cement, fatal accident from the fumes of, 402. 
J 
Jack, Dr, on the trees of Sumatra and Malacca, 397. — on Oriental sas- 
safras, 399- — on Rafflesia Titan, ib. — on the Camphor-tree, 399* — 
on the Varnish- tree, 400. 
John, M. on meteoric iron and meteoric stones, 389- 
Johnson, Mr, his method of consuming smoke, 297- 
K 
Kater, Capt. on the best steel, and shape of compass needles, 179* 
Keith, Rev. Dr Skene, on weights and measures, 41. 
L 
Latreille on the geographical distribution of insects, 51. — on the Euro- 
pean coleopterous ones, 186. 
Leccmnt, Mr, on the effects of magnetism on chronometers, 238. 
Ledum, remarks on, 47. 
Leeks, on the ancient history of, 259- 
Leguminous fruits, on the ancient history of, by Prof. Link, 122, 256. 
Leucophyllim, remarks on, 47. 
Level, on the differences of, between the East and West Seas, 69. 
