ContentsCHAPTER I Mysterious soundsCHAPTER II Agreement ImpossibleCHAPTER III A Visitor is AnnouncedCHAPTER IV In Which a New Character AppearsCHAPTER V Another DisappearanceCHAPTER VI The President and Secretary Suspend HostilitiesCHAPTER VII On board the AlbatrossCHAPTER VIII The Balloonists Refuse to be ConvincedCHAPTER IX Across the PrairieCHAPTER X Westward—but Whither?CHAPTER XI The Wide PacificCHAPTER XII Through the HimalayasCHAPTER XIII Over the CaspianCHAPTER XIV The Aeronef at Full SpeedCHAPTER XV A Skirmish in DahomeyCHAPTER XVI Over the AtlanticCHAPTER XVII The Shipwrecked CrewCHAPTER XVIII Over the VolcanoCHAPTER XIX Anchored at LastCHAPTER XX The Wreck of the AlbatrossCHAPTER XXI The Institute AgainCHAPTER XXII The Go-Ahead is LaunchedCHAPTER XXIII The Grand Collapse