828 



I JSf D E X. 



Carbon monoxide, on the ignition of, 

 by electric spar lis, 355. 



Cavities in rocks, on the closure of, 

 681. 



Chadwick (J.) on the charge on the 

 atomic nucleus, 734. 1_^_ 



Chapman (D. L.) on the equation of 

 state, 197. 



Chapman (Prof. S.) on magnetic 

 storms, 665. 



Chatley (Dr. H,) on cohesion, 213. 



Chemical action, on the rate of, 569, 

 571. 



— elements, on the mass-spectra 

 of, 628. 



Chromosphere, on ionization in the 

 solar, 472. 



Clarke (J. R.) on the thermal con- 

 ductivity of some insulators, 502. 



Coal-gas and air, on heat-loss by 

 conduction in explosions of, 318 ; 

 on the ignition of, by electric 

 sparks, 356. 



Cohesion, on, 213. 



Colloids, on the precipitation of, 578. 



Compton (Prof. K. T.) on ionization 

 and production of radiation by 

 electron impacts in helium, 553. 



Convection, on, 692. 



Copper, on the electrical conduc- 

 tivity of, fused with mica, 281 ; 

 on the light radiations emitted by 

 the vapour of, 296; on the nuclear 

 charge of, 743. 



Cry st ils, on the arrangement of 

 atoms in, 169 ; on the rate of 

 chemical action in, 569. 



Curve, on a method of finding a 

 parabolic equation for a, 513. 



Cylindrical wall, on radiation from a, 

 111. 



Datta (B.) on the stability of two 

 rectilinear vortices of compressible 

 fluid moving in an incompressible 

 liquid, 138. 



David (Dr. W. T.) on heat-loss by 

 conduction in explosions of coal- 

 gas and air, 318. 



Davis (A. II.) on convection of heat 

 and similitude, 692. 



Douglas (J. D.) on the geology of 

 the Andes, 826. 



Duffield (Prof. W. G.) on the alter- 

 nating-current carbon arc, 781. 



Edgeworth (Prof. F. Y.) on the 

 application of probabilities to the 

 movement of gas-molecules, 249. 



Electric arc, on the pressure on the 

 poles of an, 511, 780 ; on the 

 alternating-current carbon, 781. 



charges, on a method of finding 



the scalar and vector potentials 

 due to the motion of, 22$. 



- conductivity of copper fused 



with mica, on the, 281. 



discharge, on the disappear- 

 ance of gas in the, 585. 



disturbances due to tides and 



waves, on, 149. 



resistance, on the measure- 

 ment of changes of, by a valve 

 method, 291. 



sparks, on the ignition of gases 



by, 345. 



Electricity, on the discharge of, 

 through rarefied gases, 785. 



Electrocapillarity, on the theory of, 

 363, 375. 



Electromagnetic waves, on the pro- 

 pagation of, round the earth, 163. 



Electron theory of the metallic state, 

 on the, 746. 



Electrons, on ionization and reson- 

 ance potentials for, in vapours of 

 lead and calcium, 73 ; on the 

 ionization velocity for, in helium, 

 440 ; on the internal energy of 

 Lorentz, 494 ; on the collisions 

 of, with molecules of a gas, 505 ; 

 on optical effects due to scattering 

 ^ of light by, 713. 



Elements in the sun, on, 809. 



Energy, on the kinetic, of molecules, 

 197. 



Entropy-temperature diagrams, on, 

 211, 501. 



Equation of state, on the, 197. 



Everett (Miss A.) on a projective 

 theorem in optics, 1 13. 



Ewing (Sir J. A.) on the specific 

 heat of saturated vapour and the 

 entropy-temperature diagrams of 

 certain fluids, 501. 



Explosions of coal-gas and air, on 

 heat-loss by conduction in, 318. 



Films, on the permeability of, to 

 hydrogen and helium, 272. 



Fluorescence, on light absorption 

 and, 1, 15 ; on the, of iodine 

 vapour, 189. 



Fluorine, on the mass-spectrum of, 

 628. 



Focussing the image of a light source, 

 on a method of, 316. 



