951. ——­, electric, 1405, 1445, 1560, note. ——­, ——­, spark, 1406, 1553. ——­, ——­, brush, 1425, 1444, 1445. ——­, ——­, glow, 1526.  Lightning, 1420, 1404, 1641. Lines of inductive force, 1231, 1304, ——­ often curved, 1219, 1224, 1230. ——­, as shown by the brush, 1449. ——­, their lateral relation, 1231, 1297, 1304. ——­, their relation to magnetism, 1411, 1658, 1709.  Liquefaction, conduction consequent upon, 380, 394, 410.  Liquid bodies which are non-conductors, 405.  Local chemical affinity, 947, 959, 961, 1739.

Machine, electric, evolution of electricity by, 1748.
------, magneto-electric, 135, 154, 158, 1118.
Magnelectric induction, 58.
——­, collectors or conductors, 86.
Magnesia, sulphate, decomposed against water, 494, 533.
——­, transference of, 495.
Magnet, a measure of conducting power, 216.
——­ and current, their relation remembered, 38, note.
——­ ——­ plate revolved together, 218.
——­ ——­ cylinder revolved together, 219.
——­ revolved alone, 220, 223.
——­ and moving conductors, their general relation, 256.
——­ made by induced current, 13, 14.
——­, electricity from, 36, 220, 223.
Magnetic bodies, but few, 255.
——­, curves, their inductive relation, 217, 232.
——­ effects of voltaic electricity, 277.
——­ ——­ common electricity, 288, 367.
——­ ——­ magneto-electricity, 27, 83, 345.
——­ ——­ thermo-electricity, 349.
——­ ——­ animal electricity, 354.
——­ and electric forces, their relation, 118, 1411, 1653, 1658, 1709,
1731.
——­ forces active through intermediate particles, 1663, 1710, 1729, 1735.
——­ forces of the current, 1653.
——­ ——­ very constant, 1654.
——­ deflection by common electricity, 289, 296.
——­ phenomena of Arago explained, 81.
——­ induction. See Induction, magnetic.
——­ induction through quiescent bodies, 1712, 1719, 1720, 1735.
——­ ——­ moving bodies, 1715, 1719.
——­ and magneto-electric action distinguished, 138, 215, 243, 253.
Magnetism, electricity evolved by, 27.
——­, its relation to the lines of inductive force, 1411, 1658, 1709.
——­ bodies classed in relation to, 255.
Magneto-electric currents, their intensity, 183, 193, 211, 213.
——­, their direction, 114, 110.
——­ traverse fluids, 33.
——­ momentary, 30.
——­ permanent, 89.
——­ in all conductors, 193, 213.
Magneto-electric induction, 27, 58.
——­, terrestrial, 110, 181.
——­, law of, 114.
——. See Arago’s magnetic phenomena.
Magneto-electric machines, 135, 154, 158.
——­, inductive effects in their wires, 1118,
Magneto-electricity, its general characters considered, 343, &c.
——­ identical with other electricities, 360.
——­, its tension, 343.
——­, evolution of heat, 344.
——­, magnetic force, 345.
——­, chemical force, 346.
——­, spark, 348.
——­, physiological effects, 347.
——. See Induction, magnetic.
Matter, atoms of, 869, 1703.
——­, new condition of, 60, 231, 242, 1114, 1661, 1729.
——­, quantity of electricity in, 852, 861, 873, 1652.