CONTENTS
| CHAPTER | PAGE | |
| I. | One Kind Of Wireless | [3] |
| II. | An Original Emergency Battery | [24] |
| III. | A Tinker Who Made Good | [38] |
| IV. | The Other Tinker Also Makes Good | [54] |
| V. | An Electrical Detective | [68] |
| VI. | Jack Has His Adventure | [86] |
| VII. | A Race Through The Flames | [102] |
| VIII. | The Secret Telegram | [117] |
| IX. | Jack Plays Reporter, With Unexpected Results | [132] |
| X. | A Runaway Train | [146] |
| XI. | The Haunted Station | [163] |
| XII. | In A Bad Fix, And Out | [180] |
| XIII. | Professor Click, Mind Reader | [198] |
| XIV. | The Last Of The Freight Thieves | [225] |
| XV. | The Dude Operator | [246] |
| XVI. | A Dramatic Flagging | [262] |
| XVII. | Wilson Again Distinguishes Himself | [279] |
| XVIII. | With The Construction Train | [295] |
| XIX. | The Enemy’s Hand Again, And A Capture | [310] |
| XX. | A Prisoner | [325] |
| XXI. | Turning The Tables | [337] |
| XXII. | The Defense Of The Viaduct | [357] |
ILLUSTRATIONS
| PAGE | |
| The next moment the Midway Junction ghost stepped grimly from his box. | [Frontispiece] |
| “Now I am going to cut your cords,” Alex went on softly. | [8] |
| Held it over the bull’s-eye, alternately covering and uncovering the stream of light. | [14] |
| Threw himself at the front door, pounding upon it with his fists. | [28] |
| In the middle of the floor, the center of all eyes, hurriedly working with chisel and hammer. | [34] |
| He was gazing into the barrel of a revolver. | [58] |
| But the response click did not come. | [64] |
| The clerk was colorless, but only faltered an instant. | [78] |
| “There!” said Jack, pointing in triumph. | [84] |
| Looped it over the topmost strand, near one of the posts. | [94] |
| There, in the corner of the big barn, Jack sent as he had never sent before. | [100] |
| With a rush they dashed into the wall of smoke. | [108] |
| Closer came the roaring monster. | [114] |
| “Come on! Come on!” exclaimed the man in the doorway. | [124] |
| “How did you do it, Smarty?” snapped the shorter man. | [130] |
| They whirled by, and the rest was lost. | [154] |
| The engineer stepped down from his cab to grasp Alex’s hand. | [158] |
| The wait was not long. | [162] |
| Jack made out a thin, clean-shaven face bending over a dark-lantern. | [176] |
| The stranger drew the chair immediately before him, and seating himself, leaned forward secretively. | [182] |
| “And it’s awfully like the light, jumpy sending of a girl!” | [196] |
| The next instant Jack felt himself hurled out into the darkness. | [234] |
| He saw the detective led by, his arms bound behind him. | [242] |
| Jack rose to his knees, and began working his way forward from tie to tie. | [272] |
| With the sharp words he again grasped the key. | [276] |
| With the boys’ prisoner securely bound to the saddle of the wandering horse, the Indian was off across the plain. | [372] |
| The Indian pulled up in a cloud of dust. | [376] |
THE YOUNG RAILROADERS