Just as one make of motor car can be distinguished from another by noting some characteristic detail, such as the radiator, the trade mark, the hubs, etc., so can the main types of aeroplanes and airships be readily differentiated by the recognition of the outstanding features of each machine. It must be admitted, nevertheless, that it needs considerable experience to be able definitely to classify detail modifications of a particular type of aircraft, for the difference is often very slight. Besides, the machines are frequently only visible at a great distance, and for but short periods (their speed being so high—60 to 150 miles per hour). There are, moreover, physical difficulties to contend with, in the form of clouds, effects of winds, position of the sun, etc.
It is claimed, however, that this book will enable the reader to identify any aircraft, provided it can be seen for sufficient time to observe its main features.
LONDON
CROSBY LOCKWOOD AND SON,
7 STATIONERS’ HALL COURT, LUDGATE HILL, E.C. 4, AND
5 BROADWAY, WESTMINSTER, S.W. 1
LIST OF BOOKS ON AVIATION.
THE AVIATION POCKET BOOK.
A Compendium of Modern Practice and a collection of useful Notes, Formulæ, Rules and Tables relating to Aeronautics. By R. Borlase Matthews, Wh. Ex., A.M.Inst.C.E., M.I.E.E., F.R.Ae.S., etc. Assisted by Specialists. New Edition, revised and enlarged. Fully illustrated. Fcap 8vo. 1918 Edition. Price 6s. net.
THE A.B.C. OF AVIATION.
A Complete Practical Treatise outlining clearly the elements of Aeronautical Engineering, with special reference to simplified explanations of the Theory of Flight, Aerodynamics, and Basic Principles underlying the Action of Balloons and Airplanes of all types. By Captain Victor W. Pagé, of the U.S. Air Service. Demy 8vo. 274 pages, with very numerous illustrations and 4 folding plates. Price 12s. 6d. net.