30 



GENERAL INDEX OF VOLS. 1 12 OF THE 



Ilusseji's (Rev. T. J.) catalogue of co- 

 mets, ii. 194,282,453; iii. 101, 198; 

 iv. 29, 205, 349 ; vii. 36. 



Hutton's (W.) observations on coal, ii. 

 302. 



Hymia, tameable disposition of, iii. 296. 



Hydatid, on a variety of, vii. 504. 



Hydrate of ojI of turpentine, vii. 537 ; 

 of potash, crystallized, ix. 151 ; of 

 barytes and strontia, ix. 87 ; of mag- 

 nesia, on, X. 454. 



Hydriodate of brucia, xi. 216,217; of 

 quina, xi. 218. 



Hydriodic acid, a test for the vegetable 

 alkalies, viii. 191. 



Hydrobromate of carbo-hydrogen (me- 

 thylene), xi. 221. 



Hydrochloric acid, its action on certain 

 sulphates, viii. 353; method of detect- 

 ing sulphurous acid in, ix. 543. 



Hydrocyanic acid, preparation of, vi. 

 97. 



and cyanurets, conversion of 



into ammonia and formic acid, i. 83. 



Hydrogen, preparation of peroxide of, 

 ii.403. 



phosphuretted, composition of, iii. 



308; V. 401. 



■ ■ antimoniuretted, x. 343. 



carburets of, xi. 404. 



— — and oxygen, safety -tube for the 

 combustion of, i. 82. 



and platina, compound of, v. 155. 



Hydrometer, Prof. Stevelly's, viii. 69. 



Hydrometeors, their connection with the 

 variations of the temperature and of 

 the barometer, xi. 359. 



Hydrosulphuric and hydroselenic aethers, 

 ix. 318. 



Hygrometer, wet-bulb, fornnula for in- 

 ferring the dew-point from the, vi. 182; 

 vii. 256, 266, 313,470. 



Hygrometrical researches, ix. 187, 398. 



Hylaeus signatus, xii. 18. 



Hymenium of fungi, x. 492. 



Hymenopterous insects, vii. 228; x. 440; 

 economy of several species of, xii. 14. 



Hyperiodic acid, and hyperiodates, iv. 

 386. 



Hypophosphomesitylous acid, xii. 101. 



Hyrax Capensis, vii. 222. 



IBIS, on the sacred, ii. 231. 

 Ice, deposition of, round the stems of 

 vegetables, ii. 110; on a stone wall, ii. 

 190; on a rhombohedral crystallization 

 of, iv. 245 ; at the bottom of running 

 water, vii. 137. 



Ichthyolites of Gamrie, vii. 325 ; disco- 

 very of, vii. 517. 



Ichthyology, ix. 67, 139, 140, 352, 391, 

 490, 507. 



Ichthyosauri, structure of, vii. 414. 



Ichthyosaurus, peculiarities of structure 

 in the cervical region of, ix. 500. 



Ichthyosiagones, on the fossil genus, ix. 

 32. 



Iguanodon, discovery of some bones of 

 the, V. 77. 



Impact and coUisiion, on, viii. 65. 



Imperial standard troy pound, x. 63. 



Impressions from feathers, process for 

 taking, xii. 451. 



India, geology of, xii. 514 ; on the black 

 cotton soil of, xii. 430 ; on the great 

 basaltic district of, xii. 286. 



Indigo, analysis of, iv. 313 ; x. 324 ; ana- 

 logy of alcohol and indigo, in their 

 combination with sulphuric acid, x. 

 324 ; manufacture of, xii. 264. 



Indu<, on the geology of the banks of 

 the, iv. 225. 



Infinite series, formulae for the summa- 

 tion of, vi. 348 ; X. 121 ; xi. 41. 



Infusoria, collections of dried, ix. 90 ; 

 tripoli wholly composed of infusorial 

 exuviae, ix. 158, 392; fossil, used for 

 food, X. 318. 



Ingleborough, on the trigonometrical 

 height of, iv. 163. 



Inglis (Dr.), prize essay on iodine, vii. 

 441 ; viii. 12, 191 ; on the conducting 

 power of iodine for electricity, ix. 450. 



Insects : — new British forms among 

 the parasitic hymenopterous, i. 127 ; 

 iii. 342 ; coleopterous, new genera and 

 species of, iii. 151 ; metamorphosis of, 

 iv. 381 ; circulation of blood in, vi. 

 300; new Dipterous insects, vi. 280, 

 447; compound eyes of, viii. 202; re- 

 spiration of, ix. 532 ; voluntary sounds 

 of, X. 327 ; temperature of, xi. 1 89. 



Integral calculus, viii. 515, 549; x. 210. 



Interference, on aberration in prismatic, 

 ii. 191, 276. 



gaseous, ix. 324 ; interference of 



light, ix. 401 ; x. 364. 



Interpolation, M. Cauchy on, viii. 459. 



Intestinal worm, double-bodied, x. 253. 



Inulin, how obtained, x. 249. 



lodal, a new compound, x. 321. 



lodate of brucia, xi. 217 ; of cinchonia, 

 xi. 217; of quina, xi. 218. 



Iodic acid, action of voltaic electricity 

 on, X. 93. 



and morphia, xi. 219. 



aether, ii. 415. 



Iodide : — of iron, composition of, vii. 

 156; of lead, remarkable property of, 

 ix. 405 ; of mercury, microscopical ex- 

 amination of, ix. 1; of gold, ix. 266; 

 of mercury, native, xi. 143; of silver, 

 new property of, xii. 258; of platina 

 and their compounds, iii. 384. 



