Practical Electrics
Reading edition
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

No. 14.—The S. & C. Series. Price 1/6 net.