INDEX. 



ACETATE of soda, on its prepara- 

 tion, 113. 



Acid, fluoboric, 122. 



silicated fluoric, 116. 



sulphoprussic, 181. 



Acoustics, 268. 



Aerolites, 395. 



Air-pump, Mr. Herries's suggestions for 

 an improved construction in, 301. 



Alluvial formations, 18, 



Altitude and azimuth circle, 70. 



Ammonia, formation of, Mr. Faraday on, 

 230. 



• oxalate of, 140. 



Amphibia and reptiles, ]\Ir. Gray on their 

 genera, 193. 



Amsterdam canal, 396. 



Analysis of a compound of iodine and 

 carbon, 14 — of silica, 120 — of silicated 

 fluate of barytes, 121 — offluate of si- 

 lica, 121 — of borax, 125 — of the bo- 

 rates of ammonia, 125 — of oxalate of 

 amnaonia, 125, 140 — of muriate of am- 

 monia, 141 — of ammonia, 141 — of sul- 

 phato-tri-carbonate of lead, 232 — of 

 hydrate of magnesia, 232 — of magne- 

 site, 233 — of seleniuret of lead, 234 — of 

 latrobite, 235 — of an alloy of gold and 

 rhodium, 251 — of the seleniurets of the 

 Eastern Hartz, 284 — of atmospheric 

 air by hydrogen, 304 — of lepidolite, 

 315— of helvin, 315— of sulphate of 

 zinc, 363 — of carbono-phosphate of 

 soda, 381. 



• complex, 140. 



Animal and vegetable economy, 2 1 8. 



Anomia and other genera, Mr. Gray on 

 the synonpna of, 241. 



Anoplotherium commune, on the disco- 

 very of, in the Isle of Wight, 360. 



Antimony, M. H. Rose on its compounds 

 with chlorine and sulphur, 416. 



Ape, Sumatran, 387 . 



Apparatus for filtering out of contact with 

 the atmosphere, 1 1 5. 



Arago, M. on the light of haloes, 395 — on 

 the thermometrical state of the globe, 

 394. 

 Argonauta, on its animal, 152. 

 Arsenic, detection of, in mixed fluids, Mr. 

 Phillips's remarks on Dr. Christison's 

 memoir on, 298. 



Astronomical observations, 44, 1 1 3, 1 88, 

 256, 329, 435. 



■ Greenwich, 390. 



Astronomy, 38, 69, 76, 113, 188, 224, 

 245, 256, 329, 390, 410, 466. 



Atkinson, Mr. H. on refraction, 69. 



Atlantic, temperature of its surface water, 

 Mr. De la Beche on, 333. 



Atmospheric air, Mr. Dalton on the ana- 

 lysis of, by hydrogen, 304. 



Atomic theory, 135, 138, 293, 352, 363, 

 469. 



Axolotl, 228. 



B. 



Baily, F. Esq. on some astronomical ta-« 

 bles, 70. 



Balance, a very sensible, 52. 



Barometrical measurement of heights, ex- 

 planation of the theory of, 44, SI, 164, 



Beaufoy, Col. his astronomical observa- 

 tions, 44, 113, 188, 256, 329,435— 

 on naval improvement, 161. 



Berthier, M. on forge scales, 130. 



Beryl, 74. 



found in Cornwall, 383. 



Berzelius, Dr. J. examination of his em- 

 pirical law respecting the oxygen in 

 salts, 145 — on fluoric acid, 116 — on 

 hydracids, 1 80. 



Bessel, Prof, on the Greenwich observa- 

 tions, 390. 



Black, Dr. on a sensible balance, 52. 



Blastoidea, Sil. 



Boner, Mr. C. on the variation of the 

 compass and the revolution of the mag- 

 netic pole, 1 . 



Books, new scientific, 77, 156, 237, 317, 

 397. 



. analyses of, 62, 1 38, 



220, 306, 452. 



Boracic acid in lava ? 384. 



Borax, 125. 



Boroauates, 123. 



Boron, 128. 



chloride of, 129. 



sulphuret of, 129. 



Botany, 67. 



Bowlders, 29. 



