CHAPTER I. CAPTURING AN AIR-SHIP.
CHAPTER II. A QUEER "FIND."
CHAPTER III. THE BALLOON HOUSE.
CHAPTER IV. THE KETTLE CONTINUES TO BOIL.
CHAPTER V. 2109 HOYNE STREET.
CHAPTER VI. CARL INVESTIGATES.
CHAPTER VII. JERROLD, BRADY'S RIVAL.
CHAPTER VIII. JERROLD'S GRATITUDE.
CHAPTER IX. ABOARD THE HAWK.
CHAPTER X. WILLOUGHBY'S SWAMP.
CHAPTER XI. A FOE IN THE AIR.
CHAPTER XII. BRADY CHANGES HIS PLANS.
CHAPTER XIII. INTO THE SWAMP.
CHAPTER XIV. A DESPERATE CHANCE.
CHAPTER XV. A DARING ESCAPE.
CHAPTER XVI. THE END OF THE MID-AIR TRAIL.
THE BIG CYPRESS.