Electric Locomotives, v, 212, vi, 161, 162, vii, 182; induction motors in, vi, 249; motors and currents, vii, 195-6, 200; power and efficiency, 193-4; regenerative brakes, 200 Electric Meters, vii, 151-79; for alternating currents, vi, 346-7; screening of, 32; units used in, iv, 312, vi, 82-3 Electric Power, costs, on what dependent, vi, 380-2; costs for farm work, vii, 224-6; extra charges for peak hours, vi, 301, vii, 177-8; measured in watts, iv, 310, 312, vi, 84-5; transmission (see Power Transmission); water power and, viii, 283 Electric Pumps, vii, 86-7; remote control, vi, 99-100 Electric Ranges, vii, 88-9; special rates for, 174 Electric Traction, vii, 180-200; block signals, 355; converters used, vi, 342; current used, 161-3; motors used, 231, 241 (see also Electrification of Railroads) Electric Waves, discovery of, iv, 55, 313 (see also Electromagnetic Waves) Electric Wiring (see Wires, Wiring) Electrification, iv, 256-62, vi, 11, 12, 13, 286; degree of, 17; methods of, iv, 265-7; of atmosphere, vii, 207, 212-13, 216-17; of earth and air, i, 144-6, 150 (see also Charged Bodies) Electrification of Railroads, v, 212, vi, 162, 249, vii, 181-2, 193-6; block signal system, vii, 359; brake system, 200; smoke relief by, i, 64; trolley and third rail systems, vii, 197-8 (see also Railroad Terminals) Electrochemical Analysis, viii, 294-5 Electrochemistry, vii, 299-324, viii, 164-9, 283-4, 312; organic, 266; use of direct current in, vi, 163; water power and, viii, 267 Electrodes, iv, 297, 317, 382, vi, 60, 129, 130-5, 367; graphite, vii, 308, 309 Electrolysis defined, iv, 382, vii, 367, viii, 375; industrial applications, vii, 312-24, viii, 164-7, 271, 272, 284; ionic hypothesis of, viii, 123-5; of organic compounds, 266; of water, 30-1 Electrolytes, iv, 382, vi, 23, 58, viii, 376; acids, bases, and salts called, 125; action of currents in, vi, 131-5, vii, 247; don'ts about, vi, 149; double-fluid, 137; in primary and secondary cells, 130 Electrolytic Cells, vii, 313, 367 Electrolytic Corrosion, vi, 65-6, vii, 189; alternating currents and, 305 Electrolytic Dissociation, viii, 123-4, xvi, 164-5 Electromagnetic Units, iv, 278-82 Electromagnetic Waves, form and lengths, vii, 371; length and frequency, 259, 260; transmitted by æther, vi, 119, 269 (see also Radio Waves) Electromagnetism, Electromagnets, iv, 286-94, vi, 30, 31, 86-104, vii, 367, 372; Einstein theory and, ii, 80-1