



Produced by R. G. P. M. van Giesen




[Illustration: cover]




THE GREAT ADVENTURE SERIES

Percy F. Westerman:
  THE AIRSHIP "GOLDEN HIND"
  TO THE FORE WITH THE TANKS
  THE SECRET BATTLEPLANE
  WILMSHURST OF THE FRONTIER FORCE

Rowland Walker:
  THE PHANTOM AIRMAN
  DASTRAL OF THE FLYING CORPS
  DEVILLE MCKEENE:
    THE EXPLOITS OF THE MYSTERY AIRMAN
  BLAKE OF THE MERCHANT SERVICE
  BUCKLE OF SUBMARINE V 2
  OSCAR DANBY, V.C.

S. W. PARTRIDGE & CO.
4, 5 & 6, SOHO SQUARE, LONDON, W.1.




THE SECRET BATTLEPLANE




[Illustration: "Blake released his grip of the rough-and-ready dart."
--_Page_ 65.]




THE
SECRET BATTLEPLANE



BY
PERCY F. WESTERMAN



AUTHOR OF
"THE RIVAL SUBMARINES," "A SUB. OF THE R.N.R.," ETC., ETC.



[Illustration: logo]



S. W. PARTRIDGE & Co.
4, 5 & 6, SOHO SQUARE, LONDON, W.1




MADE IN GREAT BRITAIN
_First Published 1916_
_Frequently reprinted_




          CONTENTS
    CHAPTER                               PAGE
       I. SNOWED UP
      II. A MYSTERIOUS BENEFACTOR
     III. THE WONDERS OF THE SECRET BATTLEPLANE
      IV. A TRIAL TRIP
       V. SO NEAR AND YET SO FAR
      VI. THE INTERRUPTED VIGIL
     VII. THE BATTLEPLANE'S OFFICIAL DEBUT
    VIII. A CROSS-CHANNEL FLIGHT
      IX. A FIGHT TO A FIN