Index, 



m 



Front, Dr. bo 4 hydrometer for urine, 



334. 

 Prussian blue, applied to dyeing by Ber- 



thoUet, 89. 



R. 



Radiant heat from terrestrial sources, 228. 



Red marl, 467. 



Refraction, 149. 



Ren wick. Prof, on torrelite, 217. 



Resins, melted, their electrical conducting 

 power, 234. 



Rhabdological abacus, 147. 



Rice paper, 3 1 6. 



Ritchie, A. notice of his paper on a new 

 photometer, 68. 



Roberts, J. his safety fire-hood, 281. 



Koget, Dr. notice of his paper on an opti- 

 cal deception, 67. 



Ross, Capt. notice of his paper on the oc- 

 cultationof Jupiter by the moon, 147 — 

 on the occultation of Herschel by the 

 moon, 149. 



S. 



Safety-hood and mouth-piece for entering 



burning houses, 281- 

 Safety Lamp, Sir H. Davy on the, 454. 

 Saline efflorescence on bricks, 68. 

 Sedgwick, Prof, on the origin of alluvial 



and diluvial formations, 24 I . 

 Selenium from the pyrites of Anglesea, 



Jlessrs. Thomson and Children on, 52. 

 Sete, freshwater formations at, 387. 

 Shells not noticed by Lamarck, 134, 407. 

 Sheppard, Rev. R.. notice of his paper on 



motacilla hippolais, 227. 

 Ships, copper sheathing of. Sir H. Davy 



on its preservation, 297 — other experi- 

 ments on the subject, 299. 

 Silica, contained in sponges and corals, 



431. 

 Silicated fluates 124. 

 Silver, nitrate of, combination of it with 



cyanuret of mercury, 131. 

 Snowdon, its geology, 74. 

 Societe d'Arcueil, origin of, 177. 

 Society, Astronomical, proceedings of, 



145,228,307,385. 

 Geological, proceedings of, 310, 



387 465. 



Linncan, proceedings of, 226, 



Sodalite, SI 4. 



Solar spots, 381. 



South, Mr. corrections in right ascension 



of 37 principal stars of the Greenwicb 



catalogue, 21, 258. 

 Sowerby, Messrs. their Species Conchylio- 



rum, 233. 

 Specific gravity of urine, instrument for 



determining, 334 — of minerals, 39 1 . 

 Sponges, Mr. Gray on their chemical 



composition, 43 1 . 

 Stars, right ascension of, 37, corrections 



in, 21,258. 

 Stockton, Mr. his meteorological table 



keptat NewMalton, 194. 

 Sub-chromate of lead, scarlet, 303. 

 Sulphate of potash, its preparation, 54, 



uranium and potash, 269. 



Sulpho-iodide of antimony, 152. 

 Sulphuret oflead and antimony, 231. 

 Sun, spots on the, 381. 



Tables, meteorological, 79 et seq.' — 109, 



194,264, 307. 

 Tartarized antimony, 372. 

 Telegraph, Edelcrantz's, 325. 

 Telescope, notice of Frauenhofer's large, 



309. 

 Thomson, E. P. Esq, on selenium from 



Anglesea, 52. 

 Titanium, M. Vauquelin on its presence 



in mica, 229. 



atomic weight of, 20. 



chlorides of, 18. 



■ muriate of, 20. 



Torrelite, does not contain oxide of cerium, 



221. 

 Tourmalines, composition of, 149. 

 Traill, Dr. communication from, on the 



copper sheathing of ships, 300. 

 Tumuli near the falls of Niagara, 122. 



U, and V. 



Vauquelin, M. on titanium in mica, 229. 

 Vigors, N. A. Esq. notice of his paper on 



British birds, 25:0. 

 Ulmin, 390. 

 Uranite, 276. 



Uranium, M. Berzelius on, 266. 

 • ores of, 274. 



385. 



Medical, 312. 



Royal, proceedings of, 69, 143, 



223, 306, 385, 461. 



Urine, hydrometer for, 334. 



W. 



Wachtmeister en the composition of gar« 

 net, 7U_0B todalite, SI 4. 



