Electricity, static, Part II.; Current, Part III.; Applications of, Chap. XXVII., 456; kinds of, 100; derivation of name, 107; Atmospheric, Chap. XIII., 217.
Electrification, Chap. VI., 103, 116, 132, 134; and heat, 104; condensation of, Chap. X.; escape of, 155; free and bound, 162; induced, Chap. IX.; kinds of, 120; of earth, 222; source of in cells, 265; theories about, 145; two kinds of, 120, 211.
Electromagnets, Chap. XXIII., 396; cores of, 397; horseshoe, 405.
Electromotive force, 144, Chap. XVII., 296, 300, 303; measurement of, Exp. 140; of polarization, 373, 382; series, 301; unit of, 297.
Electrophorus, 138; action of, 171, 172; our, 139.
Electroscope, action of, 206, 208; carbon, 114; pith-ball, 200; our leaf, 201, 202.
Field, electric, 156; magnetic, Chap. IV., 62, 80; magnets, 476.
Force, 103; lines of magnetic, 64, 73, 80, 156; lines of electric, 156; lines of about a wire, 385.
Galvanic cells, Chap. XV., 265; chemical action in, 270; various kinds of, 286 to 291.
Heat, effect on resistance, 343; effect on magnet, 49.
Horseshoe magnet, 11; advantages of, 82; electromagnets, 405.
Induced currents, Chap. XXV.; and work, 429; and lines of force, 432, 435, 438; direction of, 439.
Induction coils, 473; action of, 474; condensers of, 181; with telephone, 483.
Induction, electromagnetic, 426; laws of, 440; static, theory of, 159; successive, 168.
Internal resistance, 307, 314, 358, 362, 368.
Iron, hardening properties of, Exp. 4; impurities of, 1; kinds of, 2; soft, 10.
Laws, of electrification, 121; of induction, 440; of magnetism, 29; of resistance, 349.
Lines of force, about a wire, 385, 388; electric, 156; and induced currents, 432, 438; magnetic, 64, 73, 74, 80, 156; resistance to, 78, 397.
Magnetic, bodies, 15; circuits, closed, 420; field, 62, 80; figures, permanent, 417; figures, 64, Exp. 161, 162, Exps. 168 to 171; force, lines of, 64, 80, 156; induction of the earth, 92; needle, 26; needles, balancing of, 88; needle, dip of, 86; problems, 33; saturation, 42; screens, 18; tick, Exp. 160; transparency, 18.
Magnetism, Part I.; induced, Chap. III., 53; residual, 44, 53; temporary, 53; terrestrial, Chap. V.; theory of, 42; of earth, 83; laws of, 29.
Magnets, bar, 21; compound, 73; effect of breaking, 51; equator of, 13, 51; experimental, 407; kinds of, 11; natural, 93; poles of, 13, 25; practical uses of, 16.