Electricity, iv, 256-321 vols. vi, vii; advantages in home and industry, vii, 51-2; animal (see Animal Electricity); atmospheric, i, 141-63, vii, 201-19, 362; attraction and repulsion law, iv, 256-8, 261, vi, 18, 122; basis of matter, iv, 23, vi, 107-8, 113, 118 (see Electron Theory); battleship applications, vii, 325-35; chemistry and, viii, 164 (see Electrochemistry); commercial units, iv, 312; conductors and nonconductors, 258-9, vi, 294-5 (see Conductors, Nonconductors); daily applications, xvi, 19, 20, 26-7, 30; defined, vii, 367; disadvantages in mines, v, 129; farm uses, vii, 220-34; flow, vi, 46, 67, 292-3; flow, direction of, iv, 265, vi, 56-7; frictional (see Frictional Electricity); history of development, iv, 52-5, vi, 9-26, xvi, 121-3, 188-92; home applications, vii, 73-90; identity of kinds, vi, 23; importance of understanding, 9-10, 64-6; late discovery and use, vii, 235; lightning and, vi, 10-11, 13-16; magnetism and, iv, 257, 276, vi, 12, 19-20, 21, 27-8, 86; "messenger" of physics, iv, 50; miscellaneous applications, vii, 336-59; name, origin of, iv, 256, vi, 12; not made, but moved, 46, 49, 72, 128; origin, latest views of, 105-25; physical effects of, x, 250, 254, xi, 117; popular applications of, iv, 10; positive and negative, i, 141, 142, iv, 258, 265, vi, 287; precise measurements, vii, 152; production of (see Electric Batteries, Generators, Power Plants); production by wind power, i, 38, v, 173; quantity unit, iv, 261, 277, 280, vii, 365, 374; science of power, xvi, 36-7; single-fluid theory, vi, 11, 288-93; static (see Static E.); transmission (see Power Transmission); uses and power, vi, 10; use in medicine (see Electro-therapeutics); wave lengths and frequency, vii, 260; wide familiarity with, 152-3; widespread interest in, vi, 330-1 (see further Electric Currents, Electric Power, Electromotive Force, etc) Electric Lamps, iv, 310, vi, 265-8; candlepower of, iv, 352, xvi, 189; detonation on breaking, vii, 211; Edison's inventions, xvi, 188, 189; energy requirements, iv, 311; light and heat, vi, 268; neon and argon fillers, i, 33; number used, vii, 51; short-circuiting by burning out, 35 Electric Lighting, vi, 264-83; advances in applications of, iv, 50-1, vi; direct and alternating current effects, 155-6; due to glowing of a solid, viii, 60; farm uses, vii, 231, 232, 233; fire hazard reduced by, vii, 51; history, xvi, 122-3, 188, 189; homes and interiors, vi, 275-8, vii, 68-72, 75; leading inventors, vi, 26, 265; meter units, iv, 312; outdoor, vi, 278-80, 283, vii, 339-4; small fraction of power used in, vi, 381; wide use and advantages, vii, 51, 52