INDEX. 



523 



Meta-elements, on the so-called, 108. 



Michelson (A. A.) on the visibility of 

 interference-fringes in the focus of 

 a telescope, 256 ; on the applica- 

 tion of interference-methods to 

 spectroscopic measurements, 338. 



Miesler (J.) on the quantitative pho- 

 tographic investigation of electrical 

 occillations, 76. 



Minchin (Prof. G. M.). experiments 

 in photo-electricity, 207. 



Monobromonaphthaline, on the op- 

 tical properties of a-, 367. 



Mountain- ranges, on the theory of the 

 origin of, 485. 



Muir (Dr. T.) on a peculiar determi- 

 nant of the sixth order, 429. 



Nasini (R.) on a peculiar case in the 

 refraction of organic compounds, 

 448. 



Nepheline rocks in Brazil, on, 142. 



Nichols (E. L.) on the alternating 

 electric arc "between a ball and 

 point, 123. 



Nickel, on the effect of heat on the 

 magnetic susceptibility of, 136 



Nicol (Dr. W. W. J.) on the mutual 

 solubility of salts in water, 369. 



Oldham (it. D.) on the action of 

 flowing streams, 68. 



Olszewski (K.) on the absorption- 

 spectrum and the colour of liquid 

 oxygen, 447. 



Optical instruments, on the use of 

 fluor-spar in, 120. 



properties of a-monobromona- 



phthaline, on the, 367. 



Oxygen, on the absorption-spectrum, 

 and the colour of liquid, 447. 



Penning (W. H.) on the geology of 

 the Southern Transvaal, 439. 



Pfaundler (Prof. J.) on an improved 

 method of determining specific 

 heats by the electrical current, 518. 



Photoelectricity, experiments in, 207. 



Photographic action of electromag- 

 netic waves, on the, 75. 



investigation of electrical oscil- 

 lations, on the quantitative, 76. 



Photography, on pin-hole, 87. 



Porphyritic rocks of Jersey, on the, 



m. 



Power, on the measurement of, 346. 



Preston (S. T.) on the behaviour of 

 the magnetic field about a revolv- 

 ing magnet, 100 ; on the kinetic 

 theory of gases, 441 ; on the light- 

 ning discharge, 443. 



Prestwich (Prof. J.) on the age, 

 formation, and successive drift- 

 stages of the valley of the Darent, 

 285. 



Puluj (Prof.) on periodically variable 

 electromotive forces in a conductor 

 with self-induction, 519. 



Radiation, on the measurement of 

 electromagnetic, 44. 



Raisin (Miss O. A.) on the lower 

 limit of the Cambrian series in 

 N. W. Caernarvonshire, 440. 



Rayleigh (Lord) on pin-hole photo- 

 graphy, 87. 



Reade (T. M.) on the theory of the 

 origin of mountain-ranges, 485 . 



Recalescence in iron and steel, on 

 the points of, 433. 



Refraction of organic compounds, on 

 a peculiar case in the, 448. 



Riess (0.) on Thomson's law of 

 wave-motion on water, 71. 



Righi (Prof. A.) on electrical con- 

 vection, 74. 



Rocks of the Korea, on the, 67. 



Rosa (E. B.) on the specific induc- 

 tive capacity of electrolytes, 188. 



Runge (Prof.) on the line "spectra of 

 the elements of Mendelejeff's 

 second group, 368. 



Salts, on the conduction of elec- 

 tricity by the vapours of heated, 

 290 ; on the mutual solubility of, 

 in water, 369. 



Sarasin (E.) on Hertz's electrical 

 vibrations in air, 289, 516. 



Schuster (A.) on the elementary 

 treatment of problems on the dif- 

 fraction of light, 77 ; on the in- 

 fluence of the bending of magnetic 

 needles on the apparent magnetic 

 dip, 275. 



Selby (Prof. A. L.) on the variation 

 of surface-tension with tempera- 

 ture, 430. 



Selenium cells, experiments with, 

 250. 



Silver, on allotropic, 238, 320, 497. 



Sissingh (R.) on Kerr's magneto- 

 optic phenomenon in the case of 

 equatorial magnetization of iron, 

 293. 



Smith (F. J.) on the measurement 

 of the time of the fall of magneti- 

 zation in a magnetized iron cylin- 

 der, 64 ; on the points of recales- 

 cence in iron and steel, 433. 



Snow, on the conductivity of, 148. 



