568 



INDEX. 



Sulphuric acid, formation of, 552. 



Sulphurous acid, action of chloride of 

 tin on, 156. 



Sylvester (Prof.) on rational deriva- 

 tion from equations of coexistence, 

 428. 



Taylor (P.), the discoverer of pyroxy- 

 lic spirit, 42. 



Temperature, distribution of, in the 

 sea and land, 191, 193. 



Tension of electric currents, use of a 

 secondary wire as a measure of, 

 266, 333. 



Terrestrial magnetism, 177- 



Thermometers, instructions for ma- 

 king observations, 205 ; radiating, 

 214. 



Thompson (L.) on the separation of 

 lime from magnesia, and on the 

 assay of gold, 309- 



Thomson (Dr. J.), new geometrical 

 proposition, 4 1 ; Mr. Rigg on a co- 

 rollary deduced by, 285. 



Thomson (Dr. T.) on pyroxylic spirit 

 and its compounds, 42, 86 ; che- 

 rnistiy of organic bodies, notice of, 

 G7. 



Thunder-storms, phenomena of, 196. 



Tides, occasional observations of, 188 ; 

 researches on the, 316, 317- 



Tin, anhydrous, protochlorideof, 414 ; 

 chloride of, its action on sulphurous 

 acid, 156. 



Tovey (J.) on the absorption of light, 

 450. 



Towson (J. T.) on the proper focus 

 for the Daguerreotype, 381. 



Tuscany, description of the borax la- 

 goons of, 21. 



Undulatory theory : on the absorption 

 of light, 450. 



Ure (Dr.), new experimental researches 

 on caoutchouc, 76. 



Urea, mode in which it exists in urine, 



154 ; lactate of, 154. 

 Uric acid, 555. 

 Vanes, 215. 



Vegetable bodies, chemistry of, 67- 



Vegetable decomposition, influence of 



nitrogen in promoting, 313. 

 Vegetable leather-like substance, com- 

 posed of infusoria, 65. 

 Velocity of sound, 1 . 



Veratric acid, 253. 



Vogel (M.) on the spontaneous deco- 

 loration of tincture of litmus, 157 ; 

 on the action of sether on indigo, 

 334 ; analysis of caseum, 482 ; ana- 

 lysis of albumen, 485 ; analysis of 

 fibrin, 486. 



Voltaic action, method of producing 

 copies of engraved copper-plates by, 

 161. 



Voltaic arrangements, on some pecu- 

 liar, 136. 



Voltaic battery, new, 287- 



Voltaic combinations and arrange- 

 ments, 287, 312. 



Voltaic sustaining battery, on an im- 

 proved construction of the, 37- 



Water-colour for drawings, on some 

 fungi capable of being used as a, 73. 



Waterhouse (G. R.) on a new species 

 of rodent, 545. 



Weaver (T.) on the older stratified 

 rocks of North Devon, 109. 



Wetherell (N.) on some organic re- 

 mains discovered in the London 

 clay, 540. 



Whewell (Rev. W.), researches on 

 the tides, 10th and 11th series, 316, 

 317; anemometer, 216. 



Wight, Isle of, on the London and 

 plastic formations of, 405. 



Wilkins (Mr.), notice of, 525. 



Williams (Rev. D.) on the culm- and 

 plant- bearing beds of Devon and 

 Cornwall, 293 ; on the transition 

 or grauwacke system of Somerset, 

 Devon, and Cornwall, 396. 



Wiltshire, on the remains found in 

 the Wealden formation in the Vale 

 of Wardour, 534. 



Wind-gauge, Lind's, 216. 



Winds, periodical, 217. 



Wohler (F.) on the subsesquiacetate 

 of lead, 155 ; on the mode in which 

 some salts act in hydrogen gas, 248. 



Wright (Col.), meteorological obser- 

 vations made in Colombia between 

 1820 and 1830, 13, 97, l69, 297, 

 374, 508. 



Zinc, amalgamated, its inaction in 

 acidulated water, 8 1 . 



Zoological Society, proceedings of, 

 544. 



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