CONTENTS
| CHAPTER | PAGE | |
| I. | A Spark Puts Three Boys and a Boat on the Jump | [7] |
| II. | Some of the Mystery Unraveled | [26] |
| III. | Invisible Hands at the Wireless | [39] |
| IV. | Taking a Great Chance | [50] |
| V. | Tom Matches One Trick With Another | [61] |
| VI. | Carrying Dangerous Live “Freight” | [70] |
| VII. | Powell Seaton’s Bad Case of “Forget” | [78] |
| VIII. | The Red Message | [85] |
| IX. | Mr. Seaton Unburdens Himself | [92] |
| X. | The Traitor at the Aerials | [105] |
| XI. | The Drab Boat Shows Her Nose | [114] |
| XII. | The Searchlight Finds a “Double” | [127] |
| XIII. | Tom Halstead—Ready! | [139] |
| XIV. | Grit Goes up the Signal Mast | [151] |
| XV. | Playing Salt Water Blind Man’s Buff | [160] |
| XVI. | A Gleam of Hope Through the Shroud of Fog | [171] |
| XVII. | When the Motor Boat Club Boys “Went Daffy” | [179] |
| XVIII. | The First Kink of the Problem Solved | [187] |
| XIX. | Helpless in the Northeaster! | [196] |
| XX. | “C.Q.D! C.Q.D.!—Help!” | [207] |
| XXI. | The Spark Finds a Friend Through the Gale | [219] |
| XXII. | Tom Halstead Springs the Climax | [230] |
| XXIII. | Hank Becomes Really Terrible | [244] |
| XXIV. | Conclusion | [249] |
The Motor Boat Club and the Wireless