| CHAPTER | PAGE | |
| I. | In which Billy Meets Nimbus | 3 |
| II. | The Enchanted Trolley Car | 13 |
| III. | The Equator Is Loose | 23 |
| IV. | The Equine Ox and the Evening Star | 37 |
| V. | In Pursuit | 47 |
| VI. | On the Passive Volcano | 55 |
| VII. | Jack Frost | 63 |
| VIII. | The Compass | 73 |
| IX. | The Trail of the Runaway | 83 |
| X. | Where Night Is Six Months Long | 93 |
| XI. | The End of the Chase | 105 |
| XII. | Across the Rainbow | 115 |