INDEX. 



905 



Flames, on the electrical behaviour 

 of metallic vapours in, 15, 809 ; 

 on the diffusion of alkali salt 

 vapours in, 118, 707, 902. 



Forced oscillations, on the main- 

 tenance of, of a new type, 513. 



Fourier's theorem as applied to 

 physical problems, remarks con- 

 cerning-, 864. 



Froth, on the origin of the small 

 bubbles of, 189, 629. 



Galvanometer, on the construction 

 and constants of a rectangular, 788. 



Gamma rays, a comparison of the 

 ionization due to Rontgen and, 

 432 ; on the origin of, from radio- 

 active substances, 453 ; on the 

 beta rays excited by the, of 

 radium, 594, 892. 



Gardiner (C. I.) on the ordovician 

 and silurian rocks of the Kilbride 

 Peninsula, 811. 



Gas equation, on the, 869. 



spectrum, on the influence of 



density on the position of emission 

 and absorption lines in a, 268. 



Geiger (Dr. II.) on photographic 

 registration of a particles, 618; 

 on the ranges of the a particles 

 from the thorium and actinium 

 products, 647. 



Geological Societv, proceedings of 

 the, 203, 324, 810, 895. 



Gill (E. W. B.) on ionization power 

 of negative ions by collisions at 

 high pressures, 293. 



Gold, on the resistance of, in mag- 

 netic fields, 813. 



Gray (Dr. J. G.) on the magnetic 

 properties of graded series of 

 nickel-manganese alloys, 1. 



Green (J. T. N.) on the older paheo- 

 zoic succession of the Duddon 

 estuary, 900. 



Gudermannian complement, on the, 

 600. 



Heaps (C. AY.) on changes in the 

 dielectric constant produced by 

 strain, 507 ; on the effect of mag- 

 netic fields on resistance, 813. 



Hill (Rev. E.), penological notes on 

 Guernsey &c, 205 : on the glacial 

 sections at Sudbury, 810. 



Houstoun (Dr. R.A.) on the deduction 



of thermodynamic relations, 693. 

 Hughes (A. LI.) on the photoelectric 

 effect of some compounds, 380. 



Hull (Prof. E.) on the interglacial 

 gravel-beds of the I. of AYight, 

 204. 



Inductive power, on, 417. 



Interferometry, on the indices of 

 doubly-refracting crystals deter- 

 mined by displacement, 827. 



Iodine, on the resonance spectra of, 

 by multiplex excitation, 673. 



Ionization, a comparison of the, 

 within closed vessels due to Ront- 

 gen and gamma rays, 432. 



curve for the alpha rays from 



polonium in mercury vapour, on 

 the, 296. 



Ions, on the ionization power of 

 negative, by collisions at high 

 pressures, 293. 



Iridescent films, on some, 751. 



Ives (H. E.), studies in the photo- 

 metry of light of different colours, 

 149, 352, 744, 845, 853. _ 



Joly (Prof. J.) on the radioactivity 

 of terrestrial surface materials, 

 694. 



Keane (T.) on the theory and 

 measurement of residual charges, 

 437. 



Kilby (W. B.) on dust figures pro- 

 duced by electric sparks, 728. 



Kinetic properties of a molecule, on 

 the, 101. 



Kleeman (Dr. R. D.) on the kinetic 

 properties of a molecule, 101 ; 

 on 8 lays, 198; on fundamental 

 properties of the equation of state, 

 391 ; on the effect of the transition 

 layer of a liquid on its surface 

 tension, 876. 



Knibbs (G. H.), mathematical ana-' 

 lysis of some experiments in 

 climatological physiology, 325. 



Kovarik (Dr. A. F.) on recoil atoms 

 in ionized air, 722. 



Lead sulphide, on the resistance of, 



in magnetic fields, 813. 

 Leslie (Miss M. S.), comparison of 

 the coefficients of diffusion of 

 thorium and actinium emanations, 

 637. 

 Light, on the influence of the 

 physical conditions of a substance 

 on its absorption of, 623 ; on the 

 photometrv of, of different colours, 

 149, 301, 352, 744, 845,853. 

 Liquid and vapour densities, on the 

 curve of, 415. 



