Copyright, 1915,
BY
HURST & COMPANY
| CHAPTER | PAGE | |
| I. | The Story of the Old Windmill | 5 |
| II. | A Moment of Peril | 17 |
| III. | The Battle in the Air | 30 |
| IV. | The Tell-Tale Chart | 42 |
| V. | Striking a Clue | 55 |
| VI. | Behind the Trenches | 67 |
| VII. | The Red Lanterns in the Sky | 83 |
| VIII. | The Awakening | 92 |
| IX. | When the Drive Was On | 105 |
| X. | The Check Line | 116 |
| XI. | Watching the Battle Ebb and Flow | 127 |
| XII. | From the Cupola Lookout | 138 |
| XIII. | The Trapped Uhlans | 147 |
| XIV. | Met on the Road | 156 |
| XV. | What Came of a Good Act | 171 |
| XVI. | Figuring It All Out | 184 |
| XVII. | Shelter from the Storm | 194 |
| XVIII. | Through a Crack in the Floor | 211 |
| XIX. | Jack Demands the Truth | 221 |
| XX. | Arousing a Coward | 231 |
| XXI. | Bombarded by a Zeppelin | 243 |
| XXII. | At Headquarters in Ypres | 256 |
| XXIII. | A Ride On a Gun Caisson | 269 |
| XXIV. | What Little Jacques Did | 281 |
| XXV. | Nearing the Goal | 296 |