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[Illustration: THE MOST IMPORTANT "TOOL" IN THE BUILDING OF MODEL
AEROPLANES.

[_Illustration by permission from_ MESSRS. A. GALLENKAMP & CO'S.
CHEMICAL CATALOGUE.]]




    THE THEORY AND PRACTICE
    OF
    MODEL AEROPLANING

    BY
    V.E. JOHNSON, M.A.

    AUTHOR OF
    'THE BEST SHAPE FOR AN AIRSHIP,' 'SOARING FLIGHT,'
    'HOW TO ADVANCE THE SCIENCE OF AERONAUTICS,'
    'HOW TO BUILD A MODEL AEROPLANE,' ETC.

    "Model Aeroplaning is an Art in itself"

    [Illustration]

    London
    E. & F.N. SPON, LTD., 57 HAYMARKET

    New York
    SPON & CHAMBERLAIN, 123 LIBERTY STREET

    1910




PREFACE


The object of this little book is not to describe how to construct
some particular kind of aeroplane; this has been done elsewhere: but
to narrate in plain language the general practice and principles of
model aeroplaning.

There is a _science_ of model aeroplaning--just as there is a science
of model yachting and model steam and electric traction, and an
endeavour is made in the following pages to do in some measure for
model aeroplanes what has already been done for model yachts and
