W. A. WILDE COMPANY
BOSTON ——— CHICAGO

Copyrighted, 1918,
BY W. A. WILDE COMPANY
All rights reserved
THE SECRET WIRELESS

To
WALTER K. RHODES, A.M., E.E.,
PROFESSOR OF ELECTRO-TECHNICS
IN BUCKNELL UNIVERSITY,
TO WHOSE KINDLY HELPFULNESS IS DUE
WHATEVER OF TECHNICAL MERIT THERE
MAY BE IN THIS AND COMPANION STORIES
OF THE "WIRELESS,"
This Book is Dedicated

Contents

I. [WHAT CAME OF HENRY'S IDEA]
II. [HENRY OVERCOMES AN OBSTACLE]
III. [THE WIRELESS PATROL PREPARES FOR ACTION]
IV. [THE SCENE OF ACTION]
V. [THE MESSAGE IN CIPHER]
VI. [A NEW DANGER POINT]
VII. [CONFUSION WORSE CONFOUNDED]
VIII. [WHERE MONEY TALKED]
IX. [A FRESH START]
X. [THE PURSUIT IN THE DARK]
XI. [AN UNSUCCESSFUL SEARCH]
XII. [ANOTHER OBSTACLE]
XIII. [WHAT HENRY DISCOVERED]
XIV. [THE RIDDLE SOLVED]
XV. [ANOTHER MYSTERY UNRAVELED]
XVI. [AN UNEXPECTED MESSAGE]
XVII. [A CHANGE IN CIPHERS]
XVIII. [TOO LATE]
XIX. [THE ENEMY ESCAPES]
XX. [A CLUE FROM THE AIR]
XXI. [THE CAPTURE OF THE SPIES]
XXII. [A TASK ACCOMPLISHED]

ILLUSTRATIONS

[ Frontispiece ]

[ Up came a sliding inner tube ]

The Secret Wireless