[ "38 ] 



INDEX to VOL. XIV. 



^X^THER, on the motions of, pro- 

 duced by collisions of atoms or 

 molecules, 317. 



Air, on secondary Rontgen radiation, 

 604. 



Allen (Dr. S. J.) on a null instru- 

 ment for measuring ionization, 

 712. 



Aluminium electrodes, on a gas 

 generated from, 779. 



Arc, observations on the electric, 

 1:26 ; on the Poulsen, as a means 

 of obtaining continuous electrical 

 oscillations, 254. 



Arnold - Bemrose (H. H.) on the 

 toadstones of Derbyshire, 213. 



Astronomical physics, on questions 

 connected with, 265. 



Atmosphere, on the amount of 

 radium emanation in the, 724. 



Atoms, on the dielectric capacity of, 

 28 ; on the motions of aether pro- 

 duced by collisions of, 317 ; on a 

 natural relation between the 

 volumes of the, in compounds and 

 that of combined hydrogen, 324. 



Bakker (Dr. G.) on the theory of 

 surface forces, 509. 



Barkla (Dr. C. G.) on secondary 

 X-rays and the atomic weight of 

 nickel, 408. 



Bars, on the effect of rotatory inertia 

 on the vibrations of, 35 ; on the 

 lateral vibration of, 578. 



Barton (Prof. E. H.) on the lateral 

 vibration of bars, 578. 



Beatty (R. T.) on secondary Rontgen 

 radiation in air, 604. 



BesseFs functions, on expansion in, 

 547 ; on the asymptotic expansion 

 of, of high order, 707. 



Bevan (P. V.) on Lloyd's fringes 

 for internal reflexion, 503. 



Blackman (P.) on electrical ionic 

 conduct! vities, 215. 



Blakesley (T. H.) on logarithmic 

 lazytongs and lattice-works, 377. 



Books, new : — Gerard and De Bast's 

 Exercices et Projets d'Electro- 

 technique, 316 ; Stewart's Stereo- 

 chemistry, 553 ; Valbreuze's No- 

 tions generates sur la Telegraphie 

 sans Fil, 554 ; Bouasse's Bases 

 Physiques de la Musique, 675. 



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

 tion-curve of methane, 425 ; on 

 the properties and natures of 

 various electric radiations, 429. 



Burbury (S. H.) on diffusion of gases 

 as an irreversible process, 122 ; on 

 the work which may be gained 

 during the mixture of ga^es, 

 422. 



Campbell (A.) on the measurement 

 of mutual inductance by a vibra- 

 tion galvanometer, 494. 



Castelli (Prof. E.) on the gradual 

 modification of the first linear 

 spectra of mercury, 784. 



Cathode rays, on the secondary, 

 emitted by substances exposed to 

 y rays, 618. 



Chabot (J. J. T.) on a new instru- 

 ment for the comparison of lumin- 

 ous intensities, 428. 



Compounds, on the natural relation 

 between the volumes of atoms in, 

 and that of combined hvdrogen, 

 324. 



Condensation nuclei produced by 

 cooling gases to low temperatures, 

 on, 528. 



Cooke (Dr. W. T.) on the ionization- 

 curve of methane, 425. 



Crowther (J. A.) on the secondary 

 Rontgen radiation fram gases and 

 vapours, 653. 



Cunningham (E.) on the electro- 

 magnetic mass of a moving elec- 

 tron, 538. 



