t 871 ] 



INDEX to VOL XXV. 



]\ IR, on the absorption of electric 

 waves by, 702. 



Airy's integral, on the relation of, to 

 the Bessel functions, 200. 



Allen (A. 0.) on measurements of 

 inductance, 520. 



Alpha particles, on the retardation 

 of, by metals, 184 ; on the laws of 

 deflexion of, through large angles, 

 604 ; on the relation between the 

 range of the, and the number of 

 charges emitted during disintegra- 

 tion, 740. 



rays, on the decrease of velocity 



of, on passing through matter, 10; 

 on the excitation of y rays by, 

 193. . 



Anode, on the temperature of the, 

 in a Geissler tube, 453. 



Apophorometer, on the, 301. 



Bailey (E. B.) on the Loch Awe 

 Syncline, 756. 



Barkla (Prof. C. G.) on the photo- 

 graphic effect of X-rays and X- 

 ray spectra, 296 ; on ionization in 

 gases by Rontgcn and corpuscular 

 radiations, 832. 



Beta rays, on the decrease of velocity 

 of, on passing through matler, 10 ; 

 on the ionization produced by, at 

 high pressures, 172 ; on the asym- 

 metric emission of, 534. 



Bohr (Dr. N.) on the theory of the 

 decrease of velocity of electrified 

 particles on passing through 

 matter, 10. 



Books, new : — Sackur's Lehrbuch der 

 Thermochemie und Thermodyna- 

 mik, 197 ; Bureau des Longitudes : 

 Annuaire, 428 ; Muir's Theory of 

 Determinants in the Historical 

 Order of Development, 429 ; Day 

 and Sosman's High Temperature 

 Gas-Thermometry, 429 ; Tables 

 Annuelles de Constantes et 

 Donn6es numeriques de Chimie, 

 de Physique et de Technologie, 



429; Buchholz's Theoretische As- 

 tronomie von Dr. W. Klinkerfues, 

 430 ; Blein's Optique geom6trique, 

 752 ; Percival's Geometrical Op- 

 tics, 752 ; Perrin's Les Atonies, 

 869. 



Bragg (Prof. W. H.) on the produc- 

 tion of fluorescent Rontgen radia- 

 tion, 657. 



Broek (A. van den) on a quantitative 

 relation between the range of the 

 a particles and the number of 

 charges emitted during disintegra- 

 tion, 740. 



Bubbles, on the theoretical shape of 

 large, 507. 



Campbell (Dr. N.) on ionization by 

 charged particles, 803. 



Cathode, on the temperature of the, 

 in a Geissler tube, 453. 



rays, on the decrease of velocity 



of, on passing through matter, 10 ; 

 on a relation between ionization by, 

 and certain chemical effects, 212. 



Chad wick (.J.) on the excitation of 

 y rays by a rays, 193. 



Chapman (D. L.) on the theory of 

 electrocapillarity, 475. 



Chapman (J. C.) on the production 

 of fluorescent Rontgen radiation, 

 359, 870 ; experiments on polarized 

 Rontgen radiation, 792. 



Chemical potential, application of 

 the theory of, to the thermo- 

 dynamical theoiy of solutions, 31. 



Cobalt, on the dispersion of, 661. 



Colours, on the relative visibility of 

 different, 715. 



Condensation nuclei from hot wires, 

 on, 270. 



Conduction of heat along a pipe, on 

 the, 109. 



Conformal representation from a 

 mechanical point of view, on, 698. 



Contact potential phenomena be- 

 tween metals, on the charged 

 surface layers in, 241. 



