336

Faraday's Researches

Voltaic forces, elementary, 183
Voltaic pile, 165; action of elements
of, 195, 196; chemical theory of
origin, 179, 180, 181, 184,185, 190,
-33; 302; contact theory of origin,
232, 234, 243, 244, 253, 257, 263,
281, 288, 294, 308, 312; elec-
tricity of, 170, 172, 183; excite-
ment dependent on chemical
action, 304; exciting acids and
alkalies employed in, 188, 191;
oxidation as source of electric
current, 185, 190; place and care

of wires in, 276; relation of
metals inverted by heat in, 282:
source of power in, 232, 271

Water, as electric pole, 61, 74, Si;
as electrolyte, 113; determined
to either pole, Si; direct conduc-
tion by, 209; electrolysis of, 122,
131, 166 et seq.—intensity neces-
sary for, 204; electro-chemical
decomposition against, 61, 74

Zinc in voltaic battery, 214, 215

THE TEMPLE PRESS, PRINTERS, LETCHWORTH of air, 48, 50, 82; of