COPYRIGHTED, 1896

BY

THEO. AUDEL & CO.

ELECTROTYPED BY STODDER BROS.

NEW

CATECHISM

OF

ELECTRICITY,

A Practical Treatise,

BY

N. HAWKINS, M. E.,

Author of Hand Book of Calculations for Engineers; Maxim.
and Instructions for the Boiler Room; Aids to Engineers'
Examinations with Questions and Answers; Steam
Engineering Miscellany, Etc., Etc.

HAW

RELATING TO THE DYNAMO AND MOTOR; WIRING; THE
ELECTRIC RAILWAY; ELECTRIC BELL FITTING; ELECTRIC
LAMPS; ELECTRIC ELEVATORS; ELECTRIC LIGHTING;
ELECTRO PLATING; THE TELEGRAPH AND TELE-
PHONE; ELECTRIC ELEVATOR, TABLES
AND MEASUREMENTS.

THEO. AUDEL & COMPANY, PUBLISHERS,
63 FIFTH AVENUE, COR. 13TH STREET, NEW YORK,

1898.

?

This work is respectfully dedicated to

THOMAS A. EDISON,
of Llewellyn Park, N. J.

299355

"From possibilities

to realities."