782 



INDEX. 



B runner's compass, 1160. 

 Brush discharge, 821. 



CASE of an electrometer, influence 



of, 803. 

 Calibration of a tube, 921 ; of a wire, 



972. 

 Calorimetrical measurement, 917, 1104, 



1105. 

 Capacity, electrical, 72 ; of a system of 



conductors, 83 ; specific inductive, 



108, 634, 1064; of liquids, 1073; 



of gases, 1074 ; dimensions of, 607 ; 



of polarization, 252 ; standard of, 



1043; measurement of a, 1134. 

 Capacities, comparison of, 1046, 1058 ; 



balance of, 1048. 

 Capillary electrometer, 825. 

 Carnot's principle, 644. 

 Carrier in an electrical machine, 195. 

 Cascade, charge by, 85; discharge by, 95. 

 Cathode, 249. 

 Cation, 249. 



Cavallo's electrometer, 799. 

 Cells, unpolarizable, 262 ; Daniell's, 



263 ; Grove's, 263. 

 C.G.S. system, 612. 

 Channel of a coil, 723 ; best form of, 



733 ; most suitable dimensions for, 



730. 



Characteristic curve, 1274. 

 Characteristics, 1276. 

 Charge, residual, 824. 

 Charges, measurement of, 1051. 

 Chemical action, constant of, 1290; 



expenditure, 1242. 



Christie, invention of the bridge, 942. 

 Circuits, astatic, 489 ; branch, 867. 

 Circular layer, potential of a magnetic, 



365. 



Clark's standard element, 1007 ; po- 

 tentiometer, 1013. 



Cobalt, magnetisation of, 1207. 



Coercive force, 302. 



Coil, cylindrical, 495 ; annular, 496, 

 555 754 J action at a distance, 741 ; 

 on a magnetic needle, 746 ; Gau- 

 gain's, 748 ; bridge, 964 ; magnetic 



field of a, 1087; surface of a, 1089 ; 

 induction, 1287. 



Coils, concentric, 553 ; action of, 856 ; 

 of two, 790; construction of, 1287. 



Commission, International, on elec- 

 trical units, 920. 



Commutator, 912; rocking, 1055. 



Compass, mariner's, 1231 ; needles, 

 damping of, 589. 



Compensation, methods of, ion. 



Compound machines, 1279. 



Concentric cylinders, 80 ; coils, 553. 



Condenser, discharge of a, 894; used 

 in a Wheatstone's bridge, 963. 



Condensers, 78; plane, 81 ; residual 

 charge in, 242 ; use of, 240 ; cha- 

 racteristics of, 1042 ; sliding, 1045. 



Condensing force, 78. 



Conducting bodies, 638 ; shells, 574. 



Conductivity boxes, 928; electrical, 999 ; 

 coefficients of, 1000 ; of gases and 

 vapours, 1006. 



Conductors, 2 ; equilibrium of, 25, 65 ; 

 anisotropic, 215; bad, 1005; choice 

 of, 1244. 



Consequent points, 499. 



Conservation of electricity, 650. 



Constant, Verdet's, 594, 1296; of che- 

 mical action, 1 290; galvanometric, 829. 



Constants, numerical, 1290 ; magnetic, 

 1295. 



Contact of metals, 1292; electricity due 

 to, 9; electromotive force of, 187; 

 laws of, 1 88. 



Convection of heat, electrical, 285. 



Co-ordinates, geographical, 438. 



Correction of observations, 893. 



Coulomb, 292 ; theorem, 36 ; balance, 



799- 



Couple, magnetic, 296 ; of rotation of 

 two circular currents, 793 ; reciprocal 

 of two magnets, 1153. 



Couples, electrical, 259 ; Volta's, 261 ; 

 measurement of, 699 ; experimental 

 determination of, 703. 



Course, magnetic, 1231. 



Current, electrical, 198 ; strength of, 

 204; thermoelectrical, 271; mea- 

 surement of, 503 ; terrestrial, 531 ; 

 reverser, 973. 



