522 



INDEX. 



neto-optic phenomenon, 253; on 

 magnetization in strong fields at 

 different temperatures, 293. 

 Dunstan (Prof. W. P.) on an appa- 

 ratus for the distillation of mercury 

 in a vacuum, 367. 

 Dyuiond (T. S.) on an apparatus for 

 "the distillation of mercury in a 

 vacuum, 367. 

 Electric chronograph, on a new form 

 of, 377. 



current, on transient, produced 



by twisting magnetized iron and 

 nickel wires, 123 ; on the direction 

 of the induced, by twist when 

 under longitudinal magnetizing 

 force, 132; on the resistance of 

 hydrogen and other gases to the, 

 214 



radiation meter, on a new, 54. 



Electrical measuring-instruments, on 

 the shape of movable coils used 

 in, 434. 



oscillations in straight conduc- 

 tors, on, 450. 



resistance of iron, on the effect 



of repeated heating and cooling 

 on the, 77. 



Electricity, on the disruptive dis- 

 charge of, through gases, 182 ; on 

 the passage of, through hot gases, 

 358, 441 ; on atmospheric, in the 

 Tropics, 520. 



Electrification of a steam-jet, on the, 

 158. 



Electrifications due to the contact of 

 gases with liquids, on, 56, 292. 



Electrodes, on the theoiy of drop- 

 ing-mercury, 376, 479. 



Electrolytic conduction and chemical 

 action, on the problems of, 383, 480. 



Electromagnetic waves, on the acce- 

 leration of secondary, 268. 



Elements, on an algebraic expression 

 of the periodic law of the chemical, 

 97 ; on the structure of the line- 

 spectra of the chemical, 331. 



Elster (Prof.) on the formation of 

 ozone by the contact of air with 

 ignited platinum, and on the elec- 

 trical conductivity of air ozonized 

 by phosphorus, 376. 



Enright (J.) on electrifications due 

 to the contact of gases with liquids, 

 56. 



Exner (F.) on atmospheric electricity 

 in the Tropics, 520. 



Flux (A. W.) on the form of New- 

 ton's rings, 217. 



Fog-bows, on the theory of, 453. 



Galvanometers, on sensitive, 208, 508. 



Gases, on the kinetic theory of dis- 

 sociation in, 18 ; on electrifications 

 due to the contact of, with liquids, 

 56, 292 ; on the disruptive dis- 

 charge of electricity through, 182 ; 

 on the resistance of, to the current 

 and to electrical discharges, 214 ; 

 on the passage of electricity through 

 hot, 358, 441. 



Geitel (Prof.) on the formation of 

 ozone by the contact of air with 

 ignited platinum, and on the elec- 

 trical conductivity of air ozonized 

 by phosphorus, 376. 



Geological Society, proceedings of 

 the, 133, 280. 



Gerard (Prof. E.) on plotting curves 

 by the aid of photography, 180. 



Glaciation of the valleys of the 

 Jhelam and Sind rivers, on the, 135. 



Glass, on the alteration in, produced 

 by small variations of temperature, 

 289. 



Gore (Dr. G.) on a new method and 

 department of chemical research, 

 401. 



Gray (Prof. A.) on sensitive galva- 

 nometers, 208. 



Gray (Prof. T.) on the effect of per- 

 manent elongation on the cross 

 section of hard-drawn wires, 355. 



Gregory (J. W.) on the variolitic 

 rocks of 31ont-Genevre, 286. 



Gregory (W. G.) on a new electric 

 radiation-meter, 54. 



Haldaue (Dr. J. S.) on a method of 

 determining moisture and carbonic 

 acid in air, 306. 



Hydrogen, on the resistance of, to 

 the current and to electrical dis- 

 charges, 214. 



Hutchms (C. C.) on the radiant 

 energy of the standard candle, and 

 on the mass of meteors, 518. 



Iron, on the effect of repeated heat- 

 ing and cooling on the electrical 

 resistance of, 77 ; on the magneti- 

 zation of, in strong fields, 440; 

 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. 



