Page:Experimental researches in electricity.djvu/361

Rh 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