470 



INDEX. 



air in crystallization, 215 ; on the 

 formation of alcoatcs, 265, 331. 

 Gray (J. E.) on a new kind of pear- 

 encrinite, 219. 



Green (J.) on the pressure of the sea, 

 37 ; J. de C. Sowerby on, 1 1 9. 



Green -sand formation, nummulites in, 

 235. 



Gum-arabic, influence of, in the pre- 

 cipitation of lead by sulphates, 385. 



Hai dinger (W. ) on Herderite, 1. 



Hare's (Dr.) rationale of the difficulty 

 of separating plane surfaces by a blast, 

 94 ; improved eudiometrical appa- 

 ratus by, 126, 183 ; on the litrameter, 

 187. 



Harwood (Dr.) on the curative influ- 

 ence of the southern coastof England, 

 134. 



Hausmannite, analysis of, 100. 



Haworth's (A. H.) description of the 

 genus Echeveria, 261. 



Heat developed during combustion, 67. 



Herderite, a new mineral species, 1 . 



Honeycomb, figure of the cells of, 19, 

 233, 313. 



Hyderabad Country, on the geology of, 

 12. 



Hydrogen, sulphuretted, and alumi- 

 num, 150. 



Hydrometer, syphon, on an improved, 

 258. 



Hypophosphites, 383. 



Hypophosphorous acid, 383. 



Innes (G.) on certain errata in Dr. 

 Mackay's tables of versed sines, 394. 



Iodide of mercury, native, 151; action 

 of alkalies and their carbonates on, 

 152; of carbon, 155. 



Iron, agency of carbonic acid in decom- 

 posing water by the contact of, 381 ; 

 boruret of, 235 ; meteoric, in France, 

 457 ; native, slightly arseniuretted, 

 73 ; native, in the United States, 310; 

 vitriol, red, native, 153. 



Ivory (J.) on the length of a degree 

 perpendicular to the meridian at 

 Beachy Head, 6 ; on measurements 

 on the earth's surface perpendicular 

 to the meridian, 189 ; on the method 

 of finding the length of a perpen- 

 dicular degree, 241 ; in reply to the 

 Bulletin des Sciences, on the attrac- 

 tion of spheroids, 245 ; answer to an 

 article by Mr. Henry Meikle in the 

 Quarterly Journal, 321 ; on the lon- 

 gitudes of the Trigonometrical Sur- 

 vey, 432. 



J. W. L. expression for the vibration 

 of a simple pendulum by, 338. 



Jamaica, plan for investigating the na- 

 tural productions of, 460. 



Kater (Capt.) on the luminous zone of 



the 29th September, 337. 

 — 's horizontal floating colli- 

 mator, Mr. Nixon on, 218. 

 Laplace's method of solving equations 

 of the third degree, Fayolle on, 462. 

 Latitudes and difference of longitude 

 of Beachy Head and Dunnose in 

 the Isle of Wight, Mr. Ivory on, 6. 

 Lead, precipitation of by sulphates, in- 

 fluence of gum-arabic in, 385. 

 ■ , pure malate of, 386. 

 Lepidoptera of Europe, abstract of Och- 

 senheimer's genera of, 278, 343, 444. 



Lightning-tubes, 228. 



Liquorice-root, on the sugar of, 67. 

 Litrameter, Prof. Hare's, 187. 



Longitude, difference of, between Paris 

 and Greenwich, 313. 



Longitudes of the Trigonometrical Sur- 

 vey, Dr. Tiarks on, 364 ; Mr. Ivory 

 on,' 432. 



Luminous zone, 418; of 29th Sept., 

 337, 389, 392, 393, 453, 463, 464. 



Mackay's tables of versed sines, Mr. 

 Innes on certain errata in, 394. 



Magnetism, influence of, upon chemical 

 action, 385. 



Malaria, on the influence of radiation 

 in determining the site of, 272, 326. 



Malate of lead, pure, 386. 



Manganese, oxides of, Dr. Turner's 

 examination of, 22, 96. 



■ , chlorine in black oxide of, 



306. 



Manganite, analysis of, 97. 



Martin (P. J.) on the geology of West- 

 ern Sussex, 38. 



Meikle (H.) on an improved syphon- 

 hydrometer, 258 ; Mr. Ivory's reply 

 to, 321. 



Mellitic acid, 229. 



Mercury, native iodide of, 151. 



Metals, conducting power of, for elec- 

 tricity, 382. 



Meteor of a green colour, 66, 316. 



Meteoric iron in France, 457. 



Meteorological Table for May, 80 ; for 

 June, 160; for July, 240; for August, 

 320; for September, 399; for October, 

 467. 



Meteorology, 78, 80, 160, 240, 320, 

 399, 465. 



Micrometer, new, 173. 



Microscopical observations on the par- 

 ticles in the pollen of plants, 161 ; 

 examination of opaque objects, 431. 



Mineralogical literature, 314. 



Mineralogy, 1, 66, 81, 113, 154, 314. 



Minerals, new, Herderite, 1 ; analysis 

 of two, 113; erinite, 154. 



, nalvses of, 459. 



