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4
FLY MAGAZINE
April 1913

The Benoist Flying Boat
Was the sensation of the Cicero Aero Meet winning more money than any other hydro entered and 6 out of 12 First Prizes.
Benoist Aircraft Co.
6640 Delmar Boulevard Building, St. Louis, U.S.A.

Engines for all kinds of Hydro-planes and Aeroplanes.  10 H.P. to 90 H.P.
Prices from $50.00 up
Elbridge Engine Company
2 Culver Road, Rochester, N.Y. 

"Practial Aeronautics"
By CHAS. B. HHAYWARD,Member, The Aeronautical Society; Member, Society of Automobile Engineers; Formerly Secretary of the Society of Automobile Engineers; Formerly Engineering Editor, "The Automobile."

With Introduction by ORVILLE WRIGHT

800 pages, 6 1/2 x 9 1/2; 310 illustrations.  Price $3.70 postpaid
An exhaustive, up-to-date treatise on dirigibles and aeroplanes, covering their historical development, analysis of standard types, their design, construction and operation, the aeronautical motor, and the theory and practice of successful flight. 

ORVILLE WRIGHT in his introduction to this book says in part: 
"At the request of the author I have looked over some of the proofs of the present work.  On account of lack of time I have not been able to read all the chapters as I should like, but those I have examined . . . are remarkably free from the errors usually found in aeronautical works of this character.  The story of the early work of my brother and myself is also correct . . .  The chapter on the patent litigation is the best and clearest presentation of the legal aspect of the subject that has come to my notice.  If the portions of the book which I have not examined have been prepared with the same care and accuracy as those I have read, I am sure the work will be a valuable addition to the literature of Aeronautics."

Address  FLY BOOK DEPARTMENT
Roger William Building, Philadelphia, PA

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We heartily recommend the Big Ben binder to those who desire to save their copies of FLY. 

(Illustration) Showing how the metal clips are held by the binding rods. 
(Illustration) Showing the metal clip projecting through a pen knife slit in the back of the magazine. 

This binder as supplied by us will hold 28 numbers, from July, 1911, (when the size of the magazine was changed), to and including October, 1913.
This binder can be used indefinitely by removing the oldest and inserting current numbers. 
Opens flat at any page and has the appearance of a perfectly bound book, with title stamped in gold. 
To all those who order binders we will furnish odd numbers from July, 2911, to date, at the regular charge per copy. 
To any who do not care to avail themselves of the above offer we will send the binder, post free, on receipt of $1.  Address

FLY, 1701-13 Chestnut St. Philadelphia, Pa.