538 



1 N D E X. 



Earth, on the motion of the atmo- 

 sphere relatively to the, 457. 



Egerton (Capt. A. 0.) on the vapour- 

 pressure of zinc, cadmium, and 

 mercury, 33. 



Ehrenfest (Prof. P.) on adiabatic 

 invariants and the theory of 

 quanta, 500. 



Electric discharge through gases, on 

 the, 253. 



double-layer of solid and liquid 



bodies, on the surface, 297. 



properties of molybdenite at 



high temperatures, on the, 225. 



systems, on the action between 



two, 256. 



Electromagnetic field, on the energy 

 in the, 146, 286. 



Electroscopes, on an automatic de- 

 vice for charging, 358. 



Energy, on the distribution of, in 

 spectra, 49; on the equipaitition 

 of, and radiation theory, 64 ; on 

 the, in the electromagnetic field, 

 146, 286. 



Flames, on the light radiations emit- 

 ted by iron vapour in, 1. 



Fletcher (Arnold Lockhart), obituary 

 notice of, 535. 



Flicker photometer, on visual diff'u- 

 sivity and the, 18 ; on a polari- 

 zation, 360. 



Focometry of lens-combinations, on 

 the, 157, 357. 



Foucault's test, on the theory of, 

 161. 



Frenkel (J.) on the surface electric 

 double-laver of solid and liquid 

 bodies, 297. 



Frequency distributions in space, on 

 the application of solid hyper- 

 geometrical series to, 389. 



Gamma rays, on the "scattering and 

 absorption of the, 129. 



Gases, on high-vacuum spectra of, 

 253 ; on the scattering of alpha 

 particles by, 290. 



Gaseous mixtures, on the limits of 

 inflammability of, 190. 



Gems, on the ultra-violet trans- 

 parency of certain, 450. 



Geological Societv, proceedings of 

 the, 160, 296, 455, 534. 



Giltay (Prof. J. W.) on the wolf- 

 note in bowed stringed instru- 

 ments, 536. 



Glass, on a precision method of 

 uniting optical, 276. 



Globe, on the motion of a particle on 

 the surface of a smooth rotating, 

 457. 



Hatschek (E.) on some simple de- 

 formations of homogeneous par- 

 titionings of space and the in- 

 crease of internal surface generated 

 thereby, 83. 



Heat of combustion of organic com- 

 pounds, on the relation of oxygen 

 to the, 196. 



Hemsalech (G. A.) on the relative 

 behaviour of the light radiations 

 emitted by iron vapour under the 

 influence of thermal and chemical 

 actions in flames, 1. 



Homogeneous partitionings of space, 

 on simple deformations of, 83. 



Hydrocarbons, on the heat of com- 

 bustion of the, 196. 



Hydiogen, on energy distribution in 

 the spectrum of, 49 ; on the size 

 of molecules of, 215. 



Hypergeometrical series, on the ap- 

 plication of solid, to frequency 

 distributions in space, 389. 



Hysteresis, on magnetic, 334. 



Induction, on unipolar, 179. 



coil, on the secondary potential 



of an, at " make," 322. 



Inflammability of gaseous mixtures, 

 on the limits of, 190. 



Invariants, on adiabatic, and the 

 theory of quanta, 500, 514. 



Ionization, on the positive, from hot 

 salts, 225. 



Iron vapour, on the light radiations 

 emitted by, in flames, 1. 



Irrotational waves, on periodic, at 

 the surface of deep water, 381. 



Ishino (M.) on the scattering and the 

 absorption of the gamma rays, 129. 



Ives (Dr. H. E.) on visual diffusivity, 

 18 ; on a polarization flicker photo- 

 meter and some data of theoretical 

 bearing obtained with it, 360. 



Jackson (J. W.) on facetted pebbles 

 from Pendleton, 160. 



Jones (Prof. E. T.) on the secondary 

 potential of an induction-coil at 

 "make," 322. 



Kennard (Prof. E. H.) on unipolar 

 induction and the existence of the 

 aether, 179. 



