542 



INDEX. 



Cross (0. F.) on pseudo-carbons, 

 325. 



Croullebois (M.) on some conse- 

 quences of Gauss's principle in 

 electrostatics, 151. 



Crova (A.) on the illuminating- 

 power of the simple radiations, 72. 



Crystallographic notes, 474. 



Crystals, on some spiral figures ob- 

 servable in, 20. 



Currents of high tension, on a sepa- 

 rator and a shunt for alternate, 

 353. 



Ears, on the function of the two, in 

 the perception of space, 406. 



Edlund (Prof.) on the electrical re- 

 sistance of vacuum, 1 ; on the 

 electrical resistance of gases, 200. 



Efficiency, on apparatus for calcula- 

 ting, 193. 



Electric current, on the supposed 

 helical path of the, in longitudi- 

 nally magnetized conductors, 423. 



Electric-current meters, on, 87. 



Electric resistance of carbon under 

 pressure, on the, 262. 



and magnetic quantities, on the 



different system of measures for, 

 381. 



Electrical forces, on integrating ap- 



?aratus for the measurement of, 

 7. 



machines, on the variations of 



the resistance of, with their velo- 

 city, 76. 



resistance of vacuum, on the, 



1 ; of incandescent platinum, 38 ; 

 of gases, 200 ; of mixtures of sul- 

 phur and carbon, on the effect of 

 temperature on the, 347. 



Electrification by evaporation, on 

 the question of, 398. 



Electrolysis of distilled water, on 

 the, 377. 



Electromagnetic action of a moving 

 electrified sphere, on the, 302. 



Electromotive force, on the determi- 

 nation of chemical affinity in terms 

 of, 265. 



Electro-optic experiments on various 

 liquids, 153, 248. 



Electrostatic system of units, on the 

 dimensions of a magnetic pole in 

 the, 376, 381, 427, 429, 431, 530. 



Electrostatics, on some consequences 

 of Gauss's principle in, 151. 



Elements, on the connexion between 

 the atomic weight and the che- 



mical and physical properties of, 

 26. 



Energy, on the dissipation of, 417. 



Evaporation, on the question of elec- 

 trification by, 398. 



Everett (Prof. J. D.) on the dimen- 

 sions of a magnetic pole in the 

 electrostatic system of units, 376, 

 431. 



Ewing (Prof. J. A.) on the supposed 

 helical path of the electric current 

 in longitudinally magnetized con- 

 ductors,, 423. 



Fitzgerald (G. F.) on the electro- 

 magnetic action of a moving elec- 

 trified sphere, 302. 



Flames, on sensitive, 345. 



Fletcher (L.) on the crystalline 

 forms of Skutterudite, 474. 



Freeman (S. II.) on the question of 

 electrification by evaporation, 398. 



Galvanic arc, on the action of cold 

 upon the, 75. 



Galvanometer, on the action of tele- 

 phonic currents upon the, 468. 



Gases, on the conductivity of, 16; 

 on the distribution of the mole- 

 cular velocities in, 47; on the 

 electrical resistance of, 200; on 

 the compressibility of, 306; on 

 the rhythmic absorption of radiant 

 heat by, 500. 



Geological Society, proceedings of 

 the, 70, 142, 369. 



Glacial deposits of West Cumber- 

 land, on the, 71. 



Gramme machines, on the effects 

 produced in a vacuum by the cur- 

 rent of the, 536. 



Gratings, on the manufacture and 

 theory of, for optical purposes, 

 469. 



Gray (J. M.) on Eegnault's determi- 

 nation of the specific heat of steam, 

 337. 



Gray (T.) on the elasticity- and 

 strength-constants of Japanese 

 rocks, 70. 



Gunpowder, on the chemical theory 

 of, 329. 



Hannay (J. B.), an examination of 

 vacua by, 229. 



Hautefeuille (P .) on the liquefaction 

 of ozone, 407. 



Heat, radiant, on the conversion of, 

 into sound, 435, 480. 



Hood (J. J.) on retardation of che- 

 mical action, 419. 



