varied by form of conductors, 1302, 1372, 1374. ——­, ——­ change in the dielectric, 1395, 1422,1454. ——­, ——­ rarefaction of air, 1365, 1375, 1451. ——­, ——­ temperature, 1367, 1380. ——­, ——­ distance of conductors, 1303, 1364, 1371. ——­, ——­ size of conductors, 1372. ——­, in liquids and solids, 1403. ——­, in different gases, 1381, 1388, 1421. ——­, ——­ not alike, 1395. ——­, ——­ specific differences, 1399, 1422, 1687. ——­, positive and negative, 1393, 1399, 1465, 1524. ——­, ——­, distinctions, 1467, 1475, 1482. ——­, ——­, differences, 1485, 1501. ——­, ——­, relative facility, 1496, 1520. ——­, ——­, dependent on the dielectric, 1503. ——­, ——­, in different gases, 1506, 1510, 1518, 1687. ——­, ——­, of voltaic current, 1524. ——­, brush, 1425. ——­, collateral, 1412. ——­, dark, 1444, 1544, 1560. ——­, glow, 1526. ——­, spark, 1406. ——­, theory of, 1308, 1406, 1434. Discharge, electrolytic, 1164, 1343, 1621, 1703, 1706. ——­, previous induction, 1345, 1351. ——­, necessary intensity, 912, 966, 1346, 1354. ——­, division of the electrolyte, 1347, 1704. ——­, stopped by solidifying the electrolyte, 380, 1358, 1705. ——­, facilitated by added bodies, 1355. ——­, in curved lines, 521, 1216, 1351. ——­, proves action of contiguous particles, 1349. ——­, positive and negative, 1525. ——­, velocity of electric current in, 1650. ——­, related to convective discharge, 1622. ——­, theory of, 1344, 1622, 1704.  Discharging train generally used, 292.  Disruptive discharge, 1405. See Discharge, disruptive.  Dissimulated electricity, 1684. Distance, its influence in induction, 1303, 1364,1371. ——­ over disruptive discharge, 1364, 1371.  Distant chemical actions, connected and opposed, 891, 909.  Distinction of magnetic and magneto-electric action, 138, 215, 243, 253.  Division of a charge by inductive apparatus, 1208.  Doebereiner on combination effected by platina, 609, 610.  Dulong and Thenard on combination by platina and solids, 609, 611.  Dust, charge of its particles, 1567.

Earth, natural magneto-electric induction in, 181, 190, 192. Elasticity of gases, 626. ——­ gaseous particles, 658. Electric brush, 1425. See Brush, electric. ——­ condition of particles of matter, 862, 1669. ——­ conduction, 1320. See Conduction. ——­ current defined, 283, 511. ——­ ——­, nature of, 511, 1617, 1627. ——­ ——. See Current, electric. ——­ ——­, induction of, 6, 232, 241, 1048, 1101. See Induction of
  electric current.
——­ ——­, ——­, on itself, 1048. ——­ discharge, 1319. See Discharge. ——­ force, nature of, 1667. See Forces. ——­ induction, 1162. See Induction. ——­ inductive capacity, 1252. See Specific inductive capacity. ——­ polarity, 1685. See Polarity, electric. ——­ spark, 1406. See Spark, electric. ——­ and magnetic forces, their relation, 118, 1411, 1653, 1658, 1709,
  1731. 
Electrics, charge of, 1171, 1247. Electrical excitation, 1737. See Excitation. ——­