| CHAPTER I Mysterious sounds |
| CHAPTER II Agreement Impossible |
| CHAPTER III A Visitor is Announced |
| CHAPTER IV In Which a New Character Appears |
| CHAPTER V Another Disappearance |
| CHAPTER VI The President and Secretary Suspend Hostilities |
| CHAPTER VII On board the Albatross |
| CHAPTER VIII The Balloonists Refuse to be Convinced |
| CHAPTER IX Across the Prairie |
| CHAPTER X Westward—but Whither? |
| CHAPTER XI The Wide Pacific |
| CHAPTER XII Through the Himalayas |
| CHAPTER XIII Over the Caspian |
| CHAPTER XIV The Aeronef at Full Speed |
| CHAPTER XV A Skirmish in Dahomey |
| CHAPTER XVI Over the Atlantic |
| CHAPTER XVII The Shipwrecked Crew |
| CHAPTER XVIII Over the Volcano |
| CHAPTER XIX Anchored at Last |
| CHAPTER XX The Wreck of the Albatross |
| CHAPTER XXI The Institute Again |
| CHAPTER XXII The Go-Ahead is Launched |
| CHAPTER XXIII The Grand Collapse |