the cardboard to prevent the coin
from falling out.
COLE & MORGAN
Publishers of the Arts and Sciences Series
P. O. Box 1473 New York, N. Y.
The Boy Electrician
Practical Plans for Electrical Toys and Apparatus, with an Explanation
of the Principles of Everyday Electricity.
By ALFRED P. MORGAN.
Author of "Wireless Telegraph Construction for Amateurs" and "Wireless