BY
A. RUSSELL BOND
Managing Editor of "Scientific American,"
Author of "On the Battle-Front
of Engineering," etc.
WITH MANY
ILLUSTRATIONS
NEW YORK
THE CENTURY CO.
1919
Copyright, 1918, 1919, by
The Century Co.
Published, June, 1919
BY
A. RUSSELL BOND
Managing Editor of "Scientific American,"
Author of "On the Battle-Front
of Engineering," etc.
WITH MANY
ILLUSTRATIONS
NEW YORK
THE CENTURY CO.
1919
Copyright, 1918, 1919, by
The Century Co.
Published, June, 1919