INDEX. 



523 



Judd (Prof. J. W.) on the propylites 

 of the Western Isles of Scotland, 

 287. 



Karsten (Prof. H.) on the geological 

 age of the mountains of Santa 

 Marta, 163. 



Kerr's magneto-optic phenomenon, 

 on, 253. 



Langley (S. P.) on the temperature 

 of the moon, 31. 



Liebreich (0.) on the inert space in 

 chemical reactions, 216. 



Liquid, on two pulsating spheres in 

 a, 113. 



Liquids, on electrifications due to the 

 contact of gases with, 56, 292. 



Lodge (Prof. O. J.) on electrifica- 

 tions due to the contact of gases 

 with liquids, 292. 



M c Connel (J. C.) on diffraction- 

 colours with special reference to 

 coronse and iridescent clouds, 167 ; 

 on the theory of fog-bows, 453. 



Magnetism, on permanent, oil. 



Magnetization in strong fields at dif- 

 ferent temperatures, on, 293, 440. 



Magneto - optic phenomenon, on 

 Kerfs, 253. 



Manganese steel, magneto-optic ex- 

 amination of, 304. 



Margules (Dr.) on the oscillations of 

 periodically heated air, 452. 



Mather (T.) on the shape of movable 

 coils used in electrical measuring- 

 instruments, 434. 



Media, on texture in, 467. 



Mees (Prof. C. L.) on the effect of 

 permanent elongation on the cross 

 section of hard-drawn wires, 355. 



Mercury, on an apparatus for the dis- 

 tillation of, 367, 501. 



electrodes, note on dropping-, 



376,479. 



Metallic vapours, on the conductivity 

 of, 441. 



Meteors, on the mass of, 518. 



Moon, on the temperature of the, 31. 



Morgan (Prof. C. LI.) on the Pebi- 

 dian of St. Davids, 282. 



Moser (J.) on electrical vibrations in 

 rarefied air without electrodes, 

 375. 



Nagaoka (H.) on transient electric 

 current produced by twisting mag- 

 netized iron and nickel wires, 123. 



Natanson (L.) on the kinetic theory 

 of dissociation in gases, 18. 



Newton's rings, on the form of, 217. 



Nickel, on the Villari critical point 

 of, 394. 



wires, on transient electric cur- 

 rent produced by twisting mag- 

 netized, 123 ; on the direction of 

 the induced current in, 132. 



and tungsten alloys, on the 



magnetism of, 136. 



Osmond (M. F.) on permanent mag- 

 netism, 511. 



Osmotic pressure, on the theory of, 

 490. 



Ostwald (Prof. W.) on the theory of 

 dropping electrodes, 479. 



Ozone, on the formation of, by the 

 contact of air with ignited pla- 

 tinum, and on the electrical con- 

 ductivity of air ozonized by phos- 

 phorus, 376. 



Pembrey (M. S.) on a method of de- 

 termining moisture and carbonic 

 acid in air, 306. 



Periodic law of the chemical ele- 

 ments, on an approximate expres- 

 sion of the, 97. 



Perry (Prof. J.) on twisted strips, 244. 



Photography, on plotting curves by 

 the aid of, 180. 



Pickering (S. U.) on a new form of 

 mixing-calorimeter, 247; on the 

 alteration in glass produced by 

 small variations of temperature, 

 289 ; on the theory of osmotic 

 pressure and its bearing on the 

 nature of solutions, 427, 490. 



Prestwich (Prof. J.) on the Westle- 

 ton beds of Norfolk and Suffolk, 

 280. 



Propylites of the Western Isles of 

 Scotland, on the, 287. 



Puluj (Dr. J.) on a telethermometer, 

 291. 



Pumps, on the application of hy- 

 draulic power to mercurial, 138. 



Quaternions, on the importance of, 

 in physics, 84. 



Radiation meter, on a new electric, 54. 



Rayleigh (Lord) on bells, 1 ; on the 

 vibrations of an atmosphere, 173. 



Righi (Prof. A.) on the measurement 

 of electromotive contact-forces of 

 metals in different gases by the 

 ultra-violet rays, 291. 



Runge (Prof. C) on coincidences 

 between the lines of different 

 spectra, 462. 



