INDEX. 



'00 



Candle-power of incandescent lamps, 

 on the, 208. 



Charcoal, on the absorption of gases 

 by, 497. 



Chree (Dr. C.) on the temperatures 

 of thermometers under black cloth 

 and under white cloth, 288; de- 

 ductions from magnetic distur- 

 bances at Greenwich, 306. 



Clinton ( W. C.) on the voltage ratios 

 of an inverted rotary converter, 

 160. 



Cobalt, on the magnetization and 

 magnetic change of length in, 548, 

 642. 



Colours, on the origin of the pris- 

 matic, 401, 574. 



Conductivity of flames, on the elec- 

 trical, 476. 



Contact with dielectrics, on, 485. 



Converter, on the voltage ratios of 

 an inverted rotary, 160. 



Corpuscles, on the emission of nega- 

 tive, by the alkali metals, 574. 



Current, the electrical resistance of 

 a conductor the measure of the, 

 passing, 352. 



Denning (Dr. A. D.) on a method of 

 determining the radiation constant, 

 270. 



Dielectric strain along the lines of 

 force, on, 676. 



Dielectrics, on contact with, 485. 



Diethylamine and water, on the mu- 

 tual solubilities of, 397. 



Discontinuity, on surfaces of, in a 

 rotationally elastic medium, 603. 



Dispersion formula, on the rotatory, 

 408. 



Dyke (G. B.) on the flax of light from 

 the electric arc with varying power 

 supply, 216. 



Earth's motion, on the change pro- 

 duced by the, on the rotation of a 

 refracted ray, 591. 



Elastic medium, on surfaces of dis- 

 continuity in a rotationally, 603. 



Electric arc, on the flux of light 

 from the, 216. 



conductivity of flames, on the, 



476. 



discharge in gases, on the, 



617. 



lamps, on the candle-power of 



incandescent, 208. 



potential, on space at a high 



and at a low, 380. 



Electric resistance of a conductor the 

 measure of the current passing, 352. 



vibrations between confocal 



elliptic cylinders, on, 225. 



Electricity, on the effect of a trans- 

 verse magnetic field on the dis- 

 charge of, through a vacuum-tube, 

 67 ; on the conduction of, through 

 gases, 237, 664 ; on a fundamental 

 experiment in, 380 ; on the emis- 

 sion of negative, by radium and 

 thorium emanations, 460. 



Electrolytic dissociation, on the 

 theory of, 662. 



Electrons, on the resonance radiation 

 of, 513. 



Electrostriction, on, 676. 



Ellipsoidal lenses, on, 180. 



Elliptic cylinders, on electrical vibra- 

 tions between confocal, 225. 



Elsden (J. V.) on the igneous rocks 

 of St. David's, 615. 



Energy, on the partition of, between 

 matter and aether, 91. 



Eve (A. S.) on the radioactive matter 

 present in the atmosphere, 98. 



Fizeau's experiment, on a repetition 

 of, 591. 



Flames, on the electrical cnnductivitv 

 of, 476. 



Fleming (Prof. J. A.) on the ratio 

 between the mean spherical and 

 mean horizontal candle-power of 

 incandescent electric lamps, 208. 



Fluorescence of sodium vapour, on 

 the, 513. 



Garrett (C. A. B.) on the vibration 

 curves simultaneously obtained 

 from a monochord sound-box and 

 string, 149. 



Garwood (Prof. E. J.) on the tarns 

 of the Canton Ticino, 704. 



Gaseous vibrations, on the momentum 

 and pressure of, 364. 



Gases, on the structure of ions 

 formed in, at high pressures, 177; 

 on the conduction of electricity 

 through, 237, 664 ; on the rate of 

 recombination of ions in, 242; on 

 the spark- discharge in, 617. 



Geological Society, proceedings of 

 the, 188, 615, 703. 



Godlewski (Dr. T.) on actinium and 

 its successive products, 35 ; on 

 radioactive properties of uranium, 

 45 ; on the absorption of the /3 and 

 y rays of actinium, 375. 



