[No. 13.—The S. & C. Series. Price 1/6 net.]
Practical Electrics
A Universal Handy Book
ON
ELECTRIC BELLS, BATTERIES, ACCUMULATORS,
DYNAMOS, MOTORS, INDUCTION AND INTENSITY COILS,
TELEPHONES, MICROPHONES, PHONOGRAPHS,
PHOTOPHONES, ETC.
With 124 Illustrations and 135 pages of Text
