INDEX. 



467 



Lobley (J. L.) on the depth of the 



source of lava, 396. 

 MacGregor (Prof. J. G.) on the re- 

 lation of the physical properties of 

 aqueous solutions to their state of 

 ionization, 46, 99. 

 McMahon (Lieut.-Gen. C. A. & Capt. 

 A. H.) on some volcanic rocks be- 

 tween Chanian and Persia, 401. 

 Magnetic after-action, ou, 316. 

 force acting on moving electri- 

 fied spheres, on the, 1. 

 Magnetism, on the influence of, on 

 the nature of the light emitted by 

 a substance, 226, 316. 

 Marshall (Miss D.) on the heats of 

 vaporization of liquids at their 

 boiling-points, 27. 

 Mercury, on the thermo-electric pro- 

 perties of, 397. 

 Metals, on the thermo-electric pro- 

 perties of some liquid, 397. 

 Miller (Dr. G. A.) on the transitive 

 substitution groups of order 8^, p 

 being any prime number, 117. 

 Milner (S. K.) on the variation of 

 the dissociation-coefficient with 

 temperature, 286, 464; on the 

 heats of vaporization of liquids, 

 291, 464. 

 Morton (W. B.) on the effect of 

 capacity on stationary electrical 

 waves in wires, 383. 

 Muir (Dr. T.) on Lagrange's deter- 



minantal equation, 220. 

 Neesen (F.) on a method of measur- 

 ing electrolytic conductivity, 464. 

 Ocean, on an error in the method of 

 determining the mean depth of the, 

 from the velocity of seismic sea- 

 waves, 33. 

 Oxygen, on the spontaneous change 



of, into ozone, 201. 

 Ozone, on the spontaneous change of 



oxygen into, 201. 

 Photographic action inside discharge- 

 tubes, on, 133. 

 Photography of ripples, on the, 411. 

 Polarization, on the relation of cir- 

 cular, to the symmetry and parti- 

 tioning of homogeneous structures, 

 110. 

 Pressure-gauges for the highest 



vacua, on two new, 83. 

 Preston (T.) on the general extension 



of Fourier's theorem, 281, 458. 

 Kadiometer motion, on, 142. 

 Raisin (Miss C. A.) on the Rauenthal 

 serpentine, 394. 



Rayleigh (Lord) on the passage of 

 electric waves through tubes, or 

 the vibrations of dielectric cylin- 

 ders, 125 ; on the passage of waves 

 through apertures in plane screens, 

 259 ; on the measurement of alter- 

 nate currents by means of an 

 obliquely situated galvanometer- 

 needle, with a method of deter- 

 mining the angle of lag, 343. 

 Reade (T. M.) on the glacio-marine 



drift of the Vale of Olwyd, 463. 

 Reed (F. R. O.) on the red rocks 



near Bonmahon, 396. 

 Resolving power of telescopes and 

 spectroscopes for lines of finite 

 width, on the, 317. 

 Reynolds (Prof. O.) on thermal trans- 

 piration and radiometer motion, 

 142. 

 Richards (T. W.) on the spectra of 

 argon, 77 ; on the multiple spectra 

 of gases, 135 ; on the temperature 

 and ohinic resistance of gases 

 during the oscillatory electric dis- 

 charge, 349 ; on the effect of great 

 current- strength on the conduc- 

 tivity of electrolytes, 376. 

 Richarz (F.) on the action of Rontgen 



rays on a jet of steam, 75. 

 Ripples, on the photography of, 411. 

 Rontgen rays, on the action of, on a 

 jet of steam, 75 ; on the electrifica- 

 tion of gases exposed to, and the 

 absorption of, by gases and 

 vapours, 241 ; on conductance 

 produced in gases by, 418. 

 Roscoe (Sir PI. E.) on the genesis of 



Dalton's atomic theory, 153. 



Rutherford (E.) on the electrification 



of gases exposed to Rontgen rays, 



and the absorption of Rontgen 



radiation by gases and vapours, 241. 



Schuster (Prof. A.) on the magnetic 



forces acting on moving electrified 



spheres, 1. 



Seismology, applications of physics 



and mathematics to, 173. 

 Smolan (Dr. M. S. de) on conductance 

 produced in gases by Rontgen rays, 

 ultra-violet light, and uranium, 

 418. 

 Solutions, on the relation of the 

 physical properties of aqueous, to 

 their state of ionization, 46, 99. 

 Spectra of argon, on the, 77 ; on the 



multiple, of gases, 135. 

 Spectroscopes, on the resolving power 

 of, for lines of finite width, 317. 



