Capacity, specific inductive, 1252. ——. See Specific inductive capacity. Carbonic acid gas facilitates formation of spark, 1463. ——­, brush in, 1461, 1476. ——­, glow in, 1534. ——­, spark in, 1422, 1463. ——­, positive and negative brush in, 1476. ——­, ——­ discharge in, 1546. ——­, non-interference of, 645, 652.  Carbonic oxide gas, interference of, 645, 652. Carrying discharge, 1562. ——. See Discharge convective.  Cathode described, 663, 824. Cations, or cathions, described, 665, 824. ——­, table of, 817. ——­, direction of their transfer, 962.  Cations, are in relation through the entire circuit, 963. Characters of electricity, table of, 360. ——­ the electric current, constant, 1618, 1627. ——­ voltaic electricity, 268. ——­ ordinary electricity, 284. ——­ magneto-electricity, 343. ——­ thermo-electricity, 349. ——­ animal electricity, 351. Charge, free, 1684. ——­ is always induction, 1171, 1177, 1300, 1682. ——­ on surface of conductors:  why, 1301. ——. influence of form on, 1302. ——­, ——­ distance on, 1303. ——­, loss of, by convection, 1569. ——­, removed from good insulators, 1203. ——­ of matter, absolute, 1169. ——­ of air, 1173. ——­ ——­ by brush, 1434, 1441. ——­ ——­ by glow, 1526, 1537, 1543. ——­ of particles in air, 1564. ——­ of oil of turpentine, 1172. ——­ of inductive apparatus divided, 1208. ——­, residual, of a Leyden jar, 1249. ——­, chemical, for battery, good, 1137. -----, ----, weak and exhausted, 1042, 1143. Chemical action, the, exciting the pile is oxidation, 921. ——­ superinduced by metals, 564. ——­ ——­ platina, 564, 617, 630. ——­ tested by iodide of potassium, 315.  Chemical actions, distant, opposed to each other, 891, 910, 1007. Chemical affinity influenced by mechanical forces, 656. ——­ transferable through metals, 918. ——­ statical or local, 852, 921, 917, 959. ——­ current, 852, 918, 947, 996. Chemical decomposition by voltaic electricity, 278, 450, 661. ——­ common electricity, 309, 453. ——­ magneto-electricity, 346. ——­ thermo-electricity, 349. ——­ animal electricity, 355. ——. See Decomposition electro-chemical.  Chemical and electrical forces identical, 877, 918, 947, 960, 965, 1031. Chloride of antimony not an electrolyte, 690. ——­ lead, its electrolysis, 794, 815. ——­ ——­, electrolytic intensity for, 978. ——­ silver, its electrolysis, 541, 813, 902. ——­ ——­, electrolytic intensity for, 979. ——­ tin, its electrolysis, 789, 819. Chlorides in solution, their electrolysis, 766. ——­ fusion, their electrolysis, 789, 813.  Circle of anions and cathions, 963. Circles, simple voltaic, 875. ——­, associated voltaic, 989.  Circuit, voltaic, relation of bodies in, 962. Classification of bodies in relation to magnetism, 255. ——­ the electric current, 823, 817.  Cleanliness of metals and other solids, 633. Clean platina, its characters, 633, 717. ——­, its power of effecting combination, 590, 605, 617, 632. ——­,