INDEX. 



471 



on the thermodynamic theory of 

 waves, 306; on the mathematical 

 theory of strearu-liues, 460. 

 Refraction-equivalents of the ele- 

 ments, on the, 231. 

 Regnault (V.) on the expansion of 



gases, 127. 

 Reusch (Prof.) on mica-conibinations, 



195. 

 Roger (M.) on the laws of induction, 



7^ 

 Roscoe (Prof. H. E.) on vanadium, 



146. 

 Roval Society, proceedings of the, 



65, 146, 231, 304, 374, 450. 

 Russell (W. H. L.) on the mecha- 

 nical description of curves, 304. 

 Schultz-Sellack (Dr.) on the diather- 

 mancy of a series of substances for 

 obscure heat, 396. 

 Secchi (Father) on recent solar dis- 

 coveries, 61 . 

 Silliman (B.) on flame-temperatures 

 in their relations to composition 

 and luminosity, 290. 

 Slates of Knockmahon in the county 



of Waterford, on the, 12. 

 Solar radiation, researches on, 299,31 5. 

 Sorby (H. C.) on the new element 

 jargonium, 65 ; on some remark- 

 able spectra of compounds of zir- 

 conia and the oxides of uranium, 

 450. 

 Soret (L.) on illumination and polari- 

 zation in transparent substances, 

 221. 

 Sound, on the structure of the human 

 ear, and the mode in which it ad- 

 ministers to the perception of, 248. 

 Sounds, on the deadening of the, of 

 solid bodies by internal resistances, 

 161. 

 Spectra of gases under high pressures, 



on the, 365. 

 Stars, on certain drifting motions of, 



381. 

 Stewart (B.) on auroral appearances 

 and their connexion with the phe- 

 nomena of terrestrial magnetism, 

 159. 

 Stone (E. J.) on the heating-powers 



of Arcturus and a, Lyra?, 376. 

 Storer (Prof. F. H.) on the simulta- 

 neous occurrence of a soluble lead- 

 salt and free sulphuric acid in sherry 

 wine, 154. 



Stream-lines, on the mathematical 



theory of, 460. 

 Strutt (the Hon. J. W.) on an electro- 

 magnetic experiment, 428. 

 Sugar, on inverted, 345. 

 Sun, on recent discoveries concerning 



the, 61. 

 Templeton (R.) on Mr. Douglas's ac- 

 count of a new optometer, 9. 

 Thalen (R.) on the absorption-spec- 

 trum of iodine-vapour, 465. 

 Thermochemical researches, 410. 

 Thermodynamics, on, 421. 

 Thomsen's (J.) thermochemical re- 

 searches, 410. 

 Tides, a mathematical theory of the, 

 18, 260,435; on some propositions 

 in the theory of the, 49 ; on popular 

 difficulties in the theory of the, 174. 

 Tomlinson (C.) on the motions of cer- 

 tain liquids on the surface of water, 

 32. 

 Tupper (J. L.) on an optical illusion, 



423. 

 Tyndall (Prof.) on the polarization of 



heat, 280. 

 Uranium, on some remarkable spectra 

 of compounds of zirconia and the 

 oxides of, 450. 

 Vanadium, researches on, 146. 

 Vibration, on approach caused by, 



309. 

 Vortices, on the thermal energy of 



molecular, 211. 

 Walenn (W. H.) on the atomic theory, 



122. 

 Wanklyn (J. A.) on the action of the 

 alkali-metals on the ethers of the 

 fatty acids, 286. 

 Warburg (Dr. E.) on the deadening 

 of the sounds of solid bodies by in- 

 ternal resistances, 161 ; on the in- 

 fluence of sounding -vibrations on 

 the magnetism of iron, 398. 

 Warren (T. T. P. Bruce) on Professor 



Fleeming Jenkin's formula, 169. 

 Water, on the motions of certain 



liquids on the surface of, 32. 

 Watts (Dr. W. M.) on the tempera- 

 ture and heating-powers of flames, 

 337. 

 Waves, on the thermodynamic theory 



of, 306. 

 Wine, on the occurrence of a soluble 

 lead- salt and free sulphuric acid in 

 sherry, 154. 



