650 



INDEX. 



Hall's, Dr. M., observations on Dr. Ar- 

 nott's explanation of the nature of 

 stammering, 253. 



on the mechanism of vo- 

 miting, 265. 



Hammering, remarks upon the. of me- 

 tals, 6. 



Hancock, Dr., upon an apparent hy- 

 drostatic anomaly with laurel oil, 

 161. 



Harris, Mr., on the laws of electrical 

 accumulation, 380. 



on the power of various 



substances to intercept magnetism, 549. 



Hon. Charles, on the aurora 

 borealis, 522. 



Hayes, A. A., on the production of 

 prussic acid under uncommon circum- 

 stances, 169. 



Hennell, Mr., on elatinum, 532. 



Henslow, Professor, on the crystalliza- 

 tion of gold, 176. 



Hermes, remarks upon the fable of, 65. 



Herschell, Mr., observations upon the 

 utility of his chemical nomenclature, 

 440, 442. 



Herodotus, remark upon a passage in, 

 by Professor Renwick, 459. 



Hieroglyphic system, observations upon 

 the, by Professor Renwick, 458. 



Home, Sir E., structure of the feet of 

 flies first observed by, 24. 



Houlton, Mr., bulbous root of great 

 antiquity produced by, 196. 



' market state of hyoscia- 



mus by, 196. 



Horns of the Prusian elk and American 

 moose deer, 118. 



Horses, on the power of, 159. 



Horus Apollo, remarks upon the anti- 

 quity of, 470. 



Huber Burnand, M., on the snow in 

 the winters 1829 and 1830, 196. 



Human voice, memoir on the mecha- 

 nism of the, in singing, 185. 



Humboldt's, M., account of the gold 

 and platina district of the Russian 

 empire, 418. 



*" on the produce of gold 



and silver in the Russian empire, 434. 

 Map of heights, account 



of, 563. 

 Hybernating animals, observations on 



the blood vessels of the head of, 585. 

 Hyosciamus, market state of, 196. 



I. 



ICHTHYOLOGY, 429. 

 India, mirage of Central, 201. 

 Indian birds, notice of Mr. Gould's col- 

 lection of, 428. 



Indigo, new kind of, 397. 



Influence of the age of parents upon 



the sex of children, 199. 

 Insects, on the structure of the eyes of, 



152. 

 i on a peculiar system of visceral 



nerves in insects, analogous to the 



sympathetic, 586. 



lodic acid, on the preparation of, 614. 

 precipitation of the vegeto 4 



alkalies by, 615. 

 Iodide of potassium, a test for arsenic, 



173. 

 Iodine, on the disorders arising from 



the long-continued use of, 187. 

 .1 and bromine in mineral waters, 



337. 



Irised aurora borealis, account of an, 198. 

 Iron, persalts of, reaction of the, and 



neutral carbonates, 388. 



J. 



JAHN, Dr., on the use of iodine, 187. 

 Jahinichen on cholera morbus, 567. 

 Johnson, Dr., on the vision of birds of 



prey, 192. 



's, Mr., experiments on steam 



generated by heated metal, 613. 

 Josephus, remarks upon his chronology, 



469. 

 Journal of the weather at Madagascar, 



50, 51. 



K. 



KATEB, Captain, on the error in stand" 

 ards of linear measure, 343. 



Kelkoa or planera tree, wood of the, 

 recommended for useful purposes, 

 559. 



Kemp, K. T., on the conducting powers 

 of liquified gases, 613. 



Knapp, Mr., remark upon his conjecture 

 respecting the light of the glow-worm, 

 20 relating to the cleanliness of ani- 

 mals, 26. 



Knight, Mr., on the means of giving a 

 fine edge to razors and cutting instru- 

 ments, 13. 



remarks upon the climate 



of England, 642. 



Kupffer, M., on the influence of the 

 aurora borealis on the magnetic 

 needle, 429. 



new construction of a baro- 

 meter, 601. 



. on the intensity of the earth's 



magnetism, 610. 



L. 



LANCETS, new mode of giving a fine 

 edge to, 13. 



