INDEX. 



7*7 



Gases, conductivity of, 1006; specific 

 inductive capacity of magnetic rota- 

 tory power of, 1296. 



Gauge of an electrometer, 817, 1132. 



Gaugain's coil, 748; curve of demag- 

 netisation, 417. 



Gauss's experiments, 1138; method, 

 1175; theorem, 62, 438; theory of 

 terrestrial magnetism, 433 ; and 

 Weber's formula, 618. 



Geographical co-ordinates, 438. 



Glass, electrical dilatation of, 653. 



Gliding, electrical, 126; layers of, 157, 

 308, 319- 



Gold leaf electroscope, 792. 



Gramme degree, 917. 



Gramme's machine, 1262. 



Grassmann's formula, 479. 



Green's theorem, 29 ; formula, 34. 



Grove's cells, 263. 



Guard plate, 81, 806-9, 1043. 



Gyrotrope, 973. 



H 



HALL'S phenomenon, 640. 



Hankel's electrometer, 799. 



Head of a ship, 1231. 



Heat, disengagement of in the circuit, 

 243 ; propagation of, want of analogy 

 to electricity, 242 ; specific of elec- 

 tricity, 281. 



Heeling error, 1235, 1237. 



Helmholtz, Von, theory of, 513. 



Heterostatic electroscopes, 799. 



Holtz's machine, 195 ; work of a, 124. 



Hopkinson's experiments, 634. 



Horse-power-hour, 1242. 



Hughes' induction balance, 987. 



Hypothesis, electrical, 17 ; Poisson's, 

 167; Kirchhoff's, 201 ; Tait's, 284; 

 of a terrestrial magnet, 307 ; on the 

 constitution of magnets, 425. 



ICE, resistance of, 1291. 

 Idiostatic electroscopes, 799. 



Images, projection of, 674 ; electrical, 

 principle of, 148 ; of any given sys- 

 tem, 175 ; magnetic, 579- 



Impulse, sinusoidal, 891. 



Incandescence, lighting by, 1245. , 



Inclination, magnetic, 305, 1163; de- 

 termination of by induction currents, 



529. 



Inclinometer, 1163, 1170. 



Index, 658. 



Induced discharges, 1105. 



Induction, electrical, 10; characteristic 

 equations of, 116; flow of, 115; 

 magnetic, 301, 324, 374 ; coefficient 

 f 379? 383 '> coefficient of mutual, 

 5 I 9 755 > calculation of the coeffi- 

 cient of peristaltic, 551 ; electrody- 

 namic or voltaic, 508, 523 ; in a 

 circuit, 755; method of, 1194, 1198; 

 balance, 986, 1051; Gordon's, 1068 ; 

 attraction by, 996 ; ellipsoid of, 1228 ; 

 coils, 1287; electromotors, 1253; cur- 

 rents applied to study of magnetism, 



559- 



Inductive capacity, specific, 108, 634, 

 1064; of liquids, 1073; of gas, 

 1674. 



Inductometer, differential, 1067. * 



Inductor, 14, 817. 



Inertia, moments of, 701. . . 



Influence, electrical, 10. 



Instantaneous electromotive forces, 

 1124. 



Insulating supports, 819. 



Insulators, 2. 



Integrals, elliptic, determination of co- 

 efficient of mutual induction -by, 

 7 6 5 . 



Intensity of magnetisation, 318, 1196, 

 1295; electromagnetic, 450, 461 ; 

 electrodynamic, 473 ; magnetic, 1 170; 

 horizontal, 693. 



Intermittent currents, 1055. 



Inversion, phenomena of, 292; tem- 

 perature of, 272; consequences of, 



275- 



Iron, magnetic properties of, 1203. 

 Isochronous oscillations, 676, 68 1. . 

 Isothermal surfaces, 70. 

 Isotropic bodies, 70, 1230. 



VOL. II. 



EEE 



