[THE AIR TRUST][CHAPTER I.—THE BIRTH OF AN IDEA][CHAPTER II.—THE PARTNERS][CHAPTER III.—THE BAITING OF HERZOG][CHAPTER IV.—AN INTERLOPER][CHAPTER V.—IN THE LABORATORY][CHAPTER VI.—OXYGEN, KING OF INTOXICATORS][CHAPTER VII.—A FREAK OF FATE][CHAPTER VIII.—ONE UNBIDDEN, SHARES GREAT SECRETS][CHAPTER IX.—DISCHARGED]