Copyright, 1910, by HURST & CO.
CONTENTS.
| CHAPTER | PAGE | |
| I. | [ The Boys Start for the Tropics] | 5 |
| II. | [ The Storm-Clouds Gather] | 23 |
| III. | [ Billy Barnes of the Planet] | 38 |
| IV. | [ The Two-Fingered Man] | 50 |
| V. | [ Rogero is Checkmated] | 61 |
| VI. | [ Frank to the Rescue] | 70 |
| VII. | [ Feathering the Golden Eagle] | 85 |
| VIII. | [ Billy Barnes Takes the Warpath] | 94 |
| IX. | [ The Midnight Bell] | 106 |
| X. | [ The One-Eyed Quesal] | 118 |
| XI. | [ Billy Barnes is Trapped] | 128 |
| XII. | [ The Aviator Boys’ Bold Dash] | 139 |
| XIII. | [ Frank Takes a Desperate Chance] | 149 |
| XIV. | [ Saved by an Aeroplane] | 159 |
| XV. | [ The Boys Discover the Toltec’s “Sesame.”] | 171 |
| XVI. | [ The Figure on the Cliff] | 181 |
| XVII. | [ The Toltec’s Stairs] | 191 |
| XVIII. | [ The Ravine of the White Snakes] | 203 |
| XIX. | [ The Boys are Trapped] | 213 |
| XX. | [ The Lone Castaway] | 226 |
| XXI. | [ Dynamiting to Freedom] | 237 |
| XXII. | [ In an Aeroplane in an Electric Storm] | 247 |
| XXIII. | [ Saved by Wireless] | 257 |
| XXIV. | [ Unloading an Army] | 267 |
| XXV. | [ Leagued with Insurgents] | 278 |
| XXVI. | [ The Flower of Flame] | 290 |
| XXVII. | [ Prisoners of War] | 303 |
| XXVIII. | [ Facing Death] | 314 |
| XXIX. | [ Friends in Need] | 324 |
THE BOY AVIATORS IN NICARAGUA.
CHAPTER I.
THE BOYS START FOR THE TROPICS.