INDEX. 



475 



Ozone, on the formation of peroxide 

 of silver by, 160. 



Paalzovv (A.) on the conductivity of 

 some liquids for heat, 469. 



Palladium, on the occlusion of hydro- 

 gen by, 66. 



Parkes (W.) on the tides of Bombay 

 and Kurrachee, 230. 



Phillips (J. A.) on the chemical geo- 

 logy of the gold-fields of California, 

 321, 422. 



Pickering (E. C.) on the comparative 

 efficiency of different forms of the 

 spectroscope, 39. 



Plante (G.) on secondary currents and 

 their applications, 159. 



Platinum and palladium, on the sepa- 

 ration of, from rhodium, 254. 



Poisons, on the action of, 388. 



Potassium, on the diathermancy of 

 the chloride of, 329. 



Pressure, on the impact of compres- 

 sible bodies considered with refer- 

 ence to the theory of, 154. 



Quincke (Prof. G.)" on the capillary 

 constants of solid bodies, 267. 



Rankine (W. J. M.) on waves in li- 

 quids, 52. 



Refraction, on certain objections to 

 the theory of the equivalent of, 175. 



Refraction-equivalents, researches on, 

 311. 



Reynolds (J. E.) on a modified spec- 

 troscope for the examination of 

 minerals, 129 ; on certain silicic 

 acids and the anhydrous mineral 

 silicates, 274. 



Rhodium, researches on, 253. 



Riccati's equation, on, 348. 



Roger (M.) on magneto-electrical ma- 

 chines, 235 ; on the laws of induc- 

 tion, 317, 319. 



Rowley (S.) on a new theory of vi- 

 sion, 192. 



Royal Society, proceedings of the, 52, 

 154, 222, 307, 388. 



Ruthenium, on the separation of, from 

 rhodium, 256, 



Saline solutions, on supersaturated, 

 222. 



Schrauf (Dr. A.) on certain objections 

 to the theory of the equivalent of 

 refraction, 175. 



Secchi (Father) on the spectrum of 

 Brorsen's comet, 75', on stellar 

 spectra, 394. 



Sewage, on the purification of, 46. 



Silicates, on the anhydrous mineral, 

 274. 



Silver, on the formation of the per- 

 oxide of, by ozone, 160. 



Smith (M. H.) on the limited oxida- 

 tion of ethyl-crotonic acid, 290. 



Sodium, on the action of, on valeri- 

 anic ether, 454. 



Solar physics, on the bearing of recent 

 observations upon, 447. 



Solids, on the expansion of, by heat, 31 . 



Sound, on the velocity of, in tubes, 

 22; on the determination of the 

 velocity of, 80. 



Spectra, on stellar, 394 ; on obscure 

 calorific, 398. 



Spectroscope, on the comparative ef- 

 ficiency of different forms of the, 

 39 ; on a modified, for the exami- 

 nation of minerals, 129. 



Stars, on the spectra of the, 55, 394. 



Steel bars, on the molecular change 

 produced in, by magnetism, 471. 



Stefan (J.) on the application of the 

 vibrations of compound bars to de- 

 termining the velocity of sound, 

 80. 



Stellar spectra, on, 55, 394. 



Stokes (Prof. G. G.) on the commu- 

 nication of vibration from a vibra- 

 ting body to a surrounding gas, 

 401. 



Stoney (G. J.) on the internal mo- 

 tions of gases compared with the 

 motions of waves of light, 132 ; on 

 the experiment of Mahomet's coffin, 

 188; on the bearing of recent ob- 

 servations upon solar physics, 447. 



Sun, on the spectra of the, 55. 



Sylvester (J. J.) on successive invo- 

 lutes to a circle, 295, 459. 



Thermo -rheometer, on a, 396. 



Thermostat, description of a new, 30. 



Tides of Bombay and Kurrachee, on 

 the, 230. 



Tomlinson (C.) on supersaturated sa- 

 line solutions, 222 ; on some effects 

 of a chemically clean surface, 241. 



Tonophant, description of the, 217- 



Treves (M.) on the molecular change 

 produced in steel bars by magnet- 

 ism, 471. 



Unitation, on, 346. 



Valerianic ether, on the action of so- 

 dium upon, 454. 



