| I. | The “Gray Gull” | 9 | |
| II. | The Engine | 30 | |
| III. | “All Aboard!” | 46 | |
| IV. | A Voice in the Night | 70 | |
| V. | An Exploring Trip | 91 | |
| VI. | Joe in Trouble | 105 | |
| VII. | The Battle for the Boat | 116 | |
| VIII. | A Collision | 130 | |
| IX. | The Millionaire Boy | 140 | |
| X. | In the Automobile | 155 | |
| XI. | George Goes Along | 166 | |
| XII. | Pierre Catches Up | 181 | |
| XIII. | Colonel Ellison Takes a Hand | 188 | |
| XIV. | “That Chaffer Fellow” | 196 | |
| XV. | The Colonel Speaks His Mind | 212 | |
| XVI. | The War-Call | 228 | |
| XVII. | In the Red Car | 240 | |
| XVIII. | The Colonel is Angry | 257 | |
| XIX. | George is Wanted | 266 | |
| XX. | Two Nights | 275 | |
| XXI. | A Midnight Tow | 286 | |
| XXII. | The Push-Ball Contest | 295 | |
| XXIII. | Good News for Redfern | 308 | |
| XXIV. | The End of the Cruise | 318 |