474 



INDEX. 



alteration in weight Ox^ a wire tra- 

 versed by an, 321. 



Electric discliarg'es tlirougli rarefied 

 gases, on, 353. 



spark, on the spectrum of the, 



153. 



Electrical influence, on a general 

 theorem respecting, 454. 



tension, on the influence of 



light on, in metals, 330. 



Electricity, on a direct transforma- 

 tion of mechanical -work into, 78. 



Electrolytes, on the production of in- 

 duced currents in, 143. 



Electromagnet, on the diameter of 

 the wire to be employed in winding 

 an, in order to produce the maxi- 

 mum effect, 253. 



Ellipsoid, on the potential of an, at 

 an external point, 458. 



Equations, on the finite integrals of 

 certain partial differential, 213. 



Ewing (J. A.) on friction between 

 surfaces moving at low speeds, 308. 



Eye, on the chromatic aberration of 

 "the, 48. 



Flames, photometric researches on, 

 156. 



Fleming (J. A.) on the production of 

 induced currents in electrolytes,143. 



Fluorescence of the living retina, on 

 the, 397. 



Friction between surfaces moving* at 

 low speeds, on, 308. 



Galton (F.) on the process of verify- 

 ing thermometers at the Kew ob- 

 servatory, 226. 



Galvanic current, on the distribution 

 of temperature in the conducting- 

 wire of a, 79. 



Gas, on the production of heat by 

 dynamical action in the compres- 

 sion of, 14 j on the spectrum of the 

 electric spark in a compressed, 153 ; 

 on the penetration of heat across 

 layers of, 424. 



Gases, on the equilibrium of pressure 

 in, 77 ; on the specific heats of, 80 ; 

 on some effects of dissociation on 

 the physical properties of, 174. 



Gaugain (J.-M.) on the magnetiza- 

 tion of steel tubes, 468. 



Geissler tubes, on some remarkable 

 phenomena in, 240. 



Geological Societv, proceedings of 

 the, 74, 151, 234, 310. 



Gilpin (E.) on some recent disco- 

 veries of copper-ore in Nova Scotia, 

 310. 



Glacial period, on the, 152. 



Gladstone (Ur. J. H.) on the che- 

 mical constituents of the solar 

 system, 379. 



Glasses, on the dielectric properties 

 of various, 141. 



Goldstein (E.) on electric discharges 

 through rarefied gases, 353. 



Gordon (J, E. H.) on a repetition of 

 Dr. Kerr's magneto-optic experi- 

 ment, 104. 



Gouy (M.) on photometric researches 

 on coloured flames, 156. 



Granitic rocks of Ireland, on the, 311. 



Gravitation, on some dynamical con- 

 ditions applicable to Le Sage's 

 theory of, 206, 364. 



Grinwis (0. H. C.) on light-absorp- 

 tion according to Maxwell's theory, 

 313. 



Guignet (E.) on a direct transforma- 

 tion of mechanical work into elec- 

 tricity, 78. 



Habermann (J.) on a modification of 

 Dumas's method of determining 

 vapour-densities, 462. 



Heat, on the production of, by dyna- 

 mical action in the compression of 

 gas, 14; on the penetration of, 

 across layers of gas, 424. 



, specific, of platinum, on the, 



318. 



Heat of solution of sulphuric acid in 

 water, on the exact measm-e of the, 

 471. 



Heath (Eev. J. M.) on the produc- 

 tion of heat by dynamical action 

 in the compression of gas, 14. 



Heats, on the specific, of gases, 80. 



Hicks (W. M.) on the specific heats 

 of gases, 80 ; on some effects of dis- 

 sociation on the physical properties 

 of gases, 174. 



Hopkinson (J. ) on the dielectric pro- 

 perties of various glasses, 141. 



Hydrogen, on the diamagnetism of 

 condensed, 159; on the thermal 

 conductivity and diathermancy of, 

 401. 



Ice, on, as an electrolyte, 114. 



Inductive power, on specific, 316. 



Interference of two plane waves, on 

 an apparatus to illustrate the, 184. 



