| PAGE |
| Introduction: Elusive Truth | [7] |
| BOOK I. SECRETS OF SPACE |
| CHAPTER | |
| I. | Dr. Hermann Anderwelt | [19] |
| II. | The Gravity Projectile | [27] |
| III. | Structure of the Projectile | [37] |
| IV. | What is on Mars? | [48] |
| V. | Final Preparations | [57] |
| VI. | Farewell to Earth | [67] |
| VII. | The Terrors of Light | [81] |
| VIII. | The Valley of the Shadow | [91] |
| IX. | Tricks of Refraction | [99] |
| X. | The Twilight of Space | [108] |
| XI. | Telling the Time by Geography | [117] |
| XII. | Space Fever | [126] |
| XIII. | The Mystery of a Minus Weight | [141] |
| BOOK II. OTHER WORLD LIFE |
| I. | Why Mars gives a Red Light | [157] |
| II. | The Terror Birds | [170] |
| III. | Two of us against the Armies of Mars | [182] |
| IV. | The Strange Bravery of Miss Blank | [192] |
| V. | Zaphnath, Ruler of the Kemi | [204] |
| VI. | The Iron Men from the Blue Star | [220] |
| VII. | Parallel Planetary Life | [240] |
| VIII. | A Plagiarist of Dreams | [249] |
| IX. | Getting into the Corner | [260] |
| X. | Humanity on Ptah | [275] |
| XI. | Revolutionist and Eavesdropper | [283] |
| XII. | The Doctor Disappears | [292] |
| XIII. | The Revelation of Hotep | [304] |