and weight. It treats of kites, gliders and model aeroplanes,
and has an Interesting chapter on the aeroplane and its uses In
the great war. All the illustrations have been specially prepared
for the work.


Every Boy's Mechanical Library

AEROPLANES

BY
J. S. ZERBE, M. E.
Author of Automobiles--Motors


COPYRIGHT, 1915, BY
CUPPLES & LEON COMPANY
NY


CONTENTS

INTRODUCTORY

CHAPTER I. THEORIES AND FACTS ABOUT FLYING

The "Science" of Aviation. Machine Types. Shape
or Form not Essential. A Stone as a Flying Machine.
Power the Great Element. Gravity as Power. Mass
and Element in Flying. Momentum a Factor. Resistance.