INDEX. 



469 



Christison's (Dr.) treatise on poisons, 

 276 ; analysis of milk of the hya-hya 

 tree, 296. 



Chromate of iron discovered in Shet- 

 land, 226. 



Citric acid, composition of, 428. 



Climates, on artificial, 362. 



Comet in Pegasus, Mr. Rumker's and 

 M. Valtz's elements of, 50. 



Conybeare (Rev. W. D.) on Mr. 

 Lyell's " Principles of Geology" 

 215; on theoretical speculations in 

 geology, 359, 402. 



Corrosive sublimate, on, 281. 



Dakin (G.) on improvements in the 

 electrical machine, 251. 



Daubeny (Dr. C.) on iodine and bro- 

 mine in certain mineral waters of 

 Great Britain, 61. 



Davenport (R.) supplement to " The 

 Amateur's Perspective," 282. 



Decomposition of water by galvanised 

 wires, 229. 



De la Beche (H. T.) on the oolitic se- 

 ries of England and France, 35, 208. 



De la Roche's experiments on heat, 

 329. 



Dichotomous System, on the dying 

 struggle of, 53, 134, 200. 



Dicotyledonous plants, remains of in 

 the great coal forn.ation, 20. 



Durability of stones, 224. 



Earth's surface, on the shortest dis- 

 tance of two points on the, 30, 1 34. 



Eclipses, additions to the theory of, 

 &c, 268,342,417. 



Eclipse of the moon, on the calculations 

 of the late, 388. 



Ecliptic, obliquity of the, 13, 241. 



Electrical machine, improvements in, 

 251. 



Electricity, causes producing, 298. 



Equivalents, new scale of, 430. 



Faraday (Mr.) on the flowing of sand 

 under pressure, 68. 



Farey's (Mr.) evidence on the law of 

 patent inventions, 305. 



Ferro-prussiate of potash, 429. 



Fire-arms, percussion, 155. 



Fleming (Dr.) on Mr. MacLeay's 

 abuse of the Dichotomous method 

 in natural history, 52. 



Flora Devoniensis, review of, 375. 



Fluids, division of, J 70. 



Fluorine, 164. 



Formic acid, 228. 



Fossils, vegetable, 16; organic tex- 

 ture of, 76. 



Fox, (R. W.) on the discharge of a jet 



of water under water, 342. 

 Galbraith (W.) on the obliquity of the 

 ecliptic, 13, 241. 



Galvanised wires, decomposition of 

 water by, 229. 



Gauss (Prof.) on a new principle of 

 mechanics, 137. 



Geographical Society, 290. 



Geological Society, 64, 147. 



Geology : — vegetable fossils found at 

 Lennel Braes, 16; on the oolite se- 

 ries of England and France, 35, 208; 

 Rev. W. D. Conybeare on Mr. 

 Lyell's " Principles of Geology," 

 215, 359, 402; on the geology of 

 Austria and Bavaria, 64 ; on the 

 geology of the south of Ireland, 147; 

 on the basin of Alhama, 150; mag- 

 netic polarity of two rocks of basalt, 

 174, 179; on rock-basins, 331 ; on 

 the new-red-sandstone of Durham, 

 348 ; geology of Teneriffe, 433. 



Glass, elasticity of threads of, 58 ; 

 green-bottle, use of in chemistry, &c. 

 252. 



Granite, structure of, 331. 



Gunpowder, composition of, 384. 



Haworth (A. H.) on the Narcissean 

 group of plants, 130. 



Heat, radiant, remarks on, 329. 



Henderson's (T.) table of occultations 

 of the planets and fixed stars in Oc- 

 tober, 316; in November and De- 

 cember, 394. 



Henwood (J. W. ) on the quantities of 

 water afforded by springs, 58. 



Horses, on the power of, 22. 



Horticultural Society, 152, 382. 



Hutton (W.) on the new-red -sandstone 

 of Durham, 348, 411. 



Hya-hya tree, milk of, 296. 



Hydrogen, arseniurets of, 302. 



Kater (Capt.) on divisions in the ring 

 of Saturn, 456. 



Inventions, patent, evidence on the law 

 of, 305. 



Iodates of potash, 229. 



Iodine, detection of, 225; occurrence 

 of in mineral waters, 61 ; precipi- 

 tate of chloride of, by sulphuric acid, 

 297. 



Ireland, on the geology of the south 

 of, 147. 



Iron, chromate of, discovered in Shet- 

 land, 226; analysis of a submuriate 

 of, 406. 



Ivory (J.) on the shortest distance of 

 two points on the earth's surface, 30, 

 134. 



Lactic acid, existence of, 297. 



Langton (J. S.) on the formation of 

 artificial climates in this country, 362. 



Lea (I.) on the genus Unio, 376. 



Lennel Braes, on the vegetable fossils 

 found at, 16. 



