Page:Experimental researches in electricity.djvu/361

Olefiant gas, combining power of platina prevented by, 105, 108
Oxide of lead, electrolysis of, 149
Oxygen and hydrogen, action of platina on, 86, 94, 102

Particles, nascent state of, 110
Periodide of mercury, 120
Phosphoric acid not an electrolyte, 118
Physiological effects of common electricity, 18; of magneto-electricity, 23; of thermo-electricity, 24; of voltaic electricity, 5
Plates, interposed, causing retardation of electrolysis, 218-225
Platina, cleanliness essential, 98, 103; combining power of, 85-91, 4, 98, 102—interferences with, 105; spongy, in relation to hydrogen, 104, 107, 108
Polar decomposition, 12, 15, 53
Polarised light in relation to electrolyte, 197
Pole defined, 112
Poles, electric, nature of, 50, 63, 82; evolved bodies at, 75—character of, 133; of air, 48, 50, 82; of metal, 82; of platina, 83, 85, 90; of water, 61, 74, 81
Potassium nitrate, electrolysis of, 209
Potassium, sulphuret of. See Sulphuret of potassium
Protochloride of carbon, 119
Protosulphuret of potassium as electrolyte, 269

Riffault and Chompré on electro-chemical decomposition, 58, 66

Schönbein on voltaic condition of iron, 316
Silver chloride, electrolysis of, 76, 154, 208; voltaic effects in sulphuret of potassium, 268
Spark, produced by animal electricity, 25; by common electricity, 19; by magneto-electricity, 23; by thermo-electricity, 24; by voltaic electricity, 5; without metallic contact, 198
Sulphate of soda, electrolysis of, 206
Sulphuret of antimony not an electrolyte, 120
Sulphuret of carbon, combining power of platina prevented by, 107
Sulphuret of potassium, active circles excited by, 259, 265; alternating currents in, 270; and heated metals, 279, as conductor, 238, 241
Sulphuret of silver, conducting power of, 44
Sulphuretted solutions, exciting action of, 194
Sulphuric acid, conduction by, 38, 72, 138, 188, 240
Sulphurous acid, electrolysis of, 138

Tartaric acid, electrolysis of, 143
Thermo - currents in electrolytes, 277
Thermo-electricity, 24
Thermo-electric phenomena, 308
Tin, voltaic effects in sulphuret of potassium, 261
Torpedo fish, electric discharge of, 26
Transference of bodies. See Decomposition, electro-chemical

Volta-electrometer, 84, 122
Voltaic battery, 211; current in, 212, 213; in action, general remarks on, 226-232; without metallic contact, 298; zinc in, 214, 215
Voltaic circles, Fig. 43, p. 201; active, 259; associated, 211; combinations of substances employed in, 256; effect of air, 274; effect of dilution, 284, 290; effect of interposed plates, 218-225; effect of motion of fluids, 273; effect of temperature, 271, 274, 279, 281; inactive, 241 et seq.; order of metals in, 295; proto-sulphuret of potassium in, 269; relation of ions in, 200; simple, 172; sulphuret of potassium in, 238, 241, 259, 265; without metallic contact, 175, 298
Voltaic current, 6, 175
Voltaic electricity, 3; chemical action as source of, 179, 180, 181, 185, 190, 282; chemical effects of, 5; discharged by hot air, 4; evolution of heat by, 5; identity with common electricity, 8, 12, 16, 31; magnetic force of, 5, 7; physiological effects of, 5; relation by measure to common electricity, 27; spark produced by, 5