A subtle change came over his face, which had been growing paler for some minutes.  Impatiently he flung away his cigar, and, turning to his desk, opened a drawer, took out a little vial and uncorked it.  He shook out two small white tablets, on the big sheet of plate-glass that covered the desk, swallowed them eagerly, and replaced the vial in the desk again.  For be it known that, master of the world though Flint was, he too had a master—­morphine.  Long years he had bowed beneath its whip, the veriest slave of the insidious drug.  No three hours could pass, without that dosage.  His immense native will power still managed to control the dose and not increase it; but years ago he had abandoned hope of ever diminishing or ceasing it.  And now he thought no more of it than of—­well, of breathing.

Breathing!  As he stood up again and drew a deep breath, under the reviving influence of the drug, his inspiration once more recurred to him.

“Breath!” said he.  “Breath is life.  Without food and drink and shelter, men can live a while.  Even without water, for some days.  But without air—­they die inevitably and at once.  And if I make the air my own, then I am master of all life!”

And suddenly he burst into a harsh, jangling laugh.

“Air!” he cried exultantly, “An Air Trust!  By God in Heaven, it can be!  It shall be!—­it must!”

His mind, somewhat sluggish before he had taken the morphine, now was working clearly and accurately again, with that fateful and undeviating precision which had made him master of billions of dollars and uncounted millions of human lives; which had woven his network of possession all over the United States, Europe and Asia and even Africa; which had drawn, as into a spider’s web, the world’s railroads and steamship lines, its coal and copper and steel, its oil and grain and beef, its every need—­save air!

And now, keen on the track of this last great inspiration, the Billionaire strode to his revolving book-case, whirled it round and from its shelves jerked a thick volume, a smaller book and some pamphlets.

“Let’s have some facts!” said he, flinging them upon his desk, and seating himself before it in a costly chair of teak.  “Once I get an outline of the facts and what I want to do, then my subordinates can carry out my plans.  Before all, I must have facts!”

For half an hour he thumbed his references, noting all the salient points mentally, without taking a single note; for, so long as the drug still acted, his brain was an instrument of unsurpassed keenness and accuracy.