416 
INDEX, 
Hatching of fowls, observations on the, 355. 
Haussmann , Professor, on metallurgic crystallography, 155, 344. 
Helix Carycliium of Gmelin, 228. 
Henry , Dr, on coal and oil gas, 223. 
Herschel , Mr J. F. on a peculiarity in the extraordinary refraction 
of certain varieties of apophyllite, 213.— on certain remarkable 
deviations from Newton’s scale, in the tints produced by doubly 
refracting crystals, 334. 
Hibbert , Dr, on the tides in the Pentland Frith, 55. 
Hill , Mr J, on a new stain for wood, and a yellow dye for cloth, 128. 
Himalaya Mountains , on the altitude of the, 407* 
Hippopotamus, 271* 
Hose of fire-engines, method of fastening the seams of, and connect- 
ing together two or more lengths, 123. 
Howard, Dr, on heat in the rays of the moon, 21 6. 
Howth, method of clearing the harbour at, 13. 
Humboldt on isothermal lines, and the distribution of heat, 28. 
Hyposulphate of Lime, on the optical properties of, 338. 
I, J 
Ice, effects of cold upon, 405. 
Impediments of speech, 409* 
Insects, on the geographical distribution of, 370. 
Instrument, account of one for measuring the specific gravity of bar- 
ley and Scotch bigg, 173. 
Iron, on the strength of, 254. 
Isothermal Lines, 28, 201. 
Jameson, Prof, on the Rocky Mountain sheep of the Americans, 138. 
Jameson, Mr William, his narrative of a voyage to Davis’ Straits, 309. 
Jameson, Rev. A. on the hatching of fowls from eggs laid after the 
death of the male bird, 355. 
K 
Keith, Dr G. S. on the specific gravity of barley and Scotch bigg, 17 3. 
Klaproth, Martin Henry, memoir of the life of, 319* 
Knox, Dr R. on the climate of Southern Africa, 279- — on the tem- 
perature of the Northern Atlantic Ocean, 283. 
L 
Larus, on some species of the genus, l6S. 
Lathy r us sativus, 36 7- 
Latreille on the geographical distribution of insects, 370. 
Lead, sheet, on the Chinese method of making it, 127* 
Lead, sulphureous, 345. 
Leadhills, on the mean temperature of, 219- — on the quantity of 
rain which fell at, from 18] 3 to 1820, 220. 
Lecount, Mr, his observations on magnetic attractions, 295. 
Leech, account of one in Ceylon, 406. 
Leguminous Fruits, on the ancient history of, 357. 
Lepidolite, on the optical structure of, 5. 
Leucite, on the optical properties of, 218. 
Link, M. on the ancient history of leguminous fruits, 357* 
Linnet, on the instinctive attachment of the, to its brood, 228. 
Livingstone, Mr, on a Chinese lusus nature, 1 32. 
Livingstone, Mr A. on the solar eclipse of 7th September 1820, as ob- 
served at Gibraltar, 287.— on the temperature of jthe water in 
Gibraltar Bay, 288. 
