INDEX. 



479 



Invariants, proof of the fundamental 



theorem of, 178. 

 Jablochkoff (P.) on a pile in which 

 the attackable electrode is coke, 76. 

 Jordanite, crystallography of, 142. 

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



rocks of Scotland, 313. 

 Jungfleisch (E.) on the extraction of 



gallium, 318. 

 Kerr (Dr. J.) on reflection of polar- 

 ized light from the equatorial sur- 

 face of a magnet, 161. 

 Kirchhoff (Prof. G.) on the motion 

 of electricity in submarine and 

 underground telegraph-wires, 474. 

 Landolt (E.) on sensations of light 

 and colour in direct aud indirect 

 vision, 398. 

 Lapworth (C.) on the Moffat series, 



72. 

 Le Conte (J.) on binocular vision, 27. 

 Le Neve Foster (Dr. C.) on some tin- 

 mines in Cornwall, 234. 

 Le Sage's theory of gravitation, on, 



45. 

 Lewis (W. J.), crystallography c 



notes by, 139. 

 Light, on some measurements of the 

 polarization of the, coming from 

 the Moon and Venus, 237 ; on the 

 photometric comparison of, of dif- 

 ferent colours, 239. 



■ and colour, on sensations of, in 



direct and indirect vision, 398. 



, polarized, on the reflection of, 



from the equatorial surface of a 

 magnet, 161. 

 Liquids, on the edge-angle and spread 



of, on solid bodies, 321, 415. 

 Lodge (Dr. O. J.) on a form of 

 Daniell cell, 1 ; on a method of 

 measuring the absolute thermal 

 conductivity of crystals, 110. 

 Magnet, on reflection of polarized 

 light from the equatorial surface 

 of a, 161. 

 Magnetic force, on the directions and 



motions of the lines of, 397. 

 Magnets, experiments with floating, 



397. 

 Mallet (R.) on the rate of earthquake- 

 wave transit, 358. 

 Matter, on the therm oelastic, ther- 

 momagnetic, and pyroelectric pro- 

 perties of, 4. 

 Mayer (A. M.) on experiments with 



floating magnets, 397. 

 Minerals, on the artificial production 

 of some, 47 j new, 52. 



Moon, on some measurements of the 

 polarization of the light coming 

 from the, 237. 

 Morley (H. E.) on Grove's gas-bat- 

 tery, 272. 

 Moser (Dr. J.) on galvanic currents 

 between solutions of different de- 

 grees of concentration, 317. 

 Nebular hypothesis, on the, 292, 362. 

 Otheoscope, on the, 70, 452. 

 Oxygen, on the liquefaction of, 80. 

 Perry (Prof. J.) on ice as an electro- 

 lyte, 43 ; on rain-clouds and atmo- 

 spheric electricity, 197 ; on the 

 contact theory of voltaic action, 

 219; on the heat-conductivity of 

 stone, 241. 

 Photographic image, on the destruc- 

 tion of the undeveloped, 61. 

 Pictet (R.) on the liquefaction of 

 oxygen, 80 ; on the liquefaction of 

 hydrogen, 158. 

 Plante (M.) on glass-engraving by 



electricity, 238. 

 Plateau's films, on permanent, 269. 

 Platinum, on the galvanic polariza- 

 tion of, in water, 400. 

 Potential, on the difference of, pro- 

 duced by the contact of different 

 substances, 367. 

 Power (W. H. T.) on the geology of 



Mauritius, 394. 

 Preece (W. H.) on some points con- 

 nected with the telephone, 281. 

 Preston (S. J.) on the application of 

 the kinetic theory of gases to gra- 

 vitation, 117 ; on the bearing of 

 the kinetic theory of gravitation 

 on the phenomena of cohesion and 

 chemical action, 297. 

 Quercite, crystallography of, 140. 

 Quincke (Prof. G.) on the edge- 

 angle and spread of liquids on solid 

 bodies, 321, 415. 

 Radiation, on repulsion resulting 



from, 68. 

 Radiations, on the law of absorption 



of, through bodies, 78. 

 Radiometer, theoretical explanations 



of the action of the, 452. 

 Rain-clouds and atmospheric electri- 

 city, on, 197. 

 Ramsay (Prof. A. C.) on the geology 



of Gibraltar, 471. 

 Ritter (A.) on states of aggregation, 



202. 

 Rood (Prof. O. N.) on the photome- 

 tric comparison of light of differ ■ 

 ent colours, 239, 



