"Can't be done, eh?" exclaimed Flint, warmly, sitting down on the desk-top and levelling a big-jointed forefinger at his partner. "That's what every new idea has had to meet. It's no argument! People scoffed at the idea of gas lighting when it was new. Called it 'burning smoke,' and made merry over it. That was as recently as 1832. But ten years later, gas-illumination was in full sway.

"Electric lighting met the same objection. And remember the objection to the telephone? When Congress, in 1843, granted Morse an appropriation of $30,000 to run the first telegraph line from Baltimore to Washington, one would-be humorist in that supremely intelligent body tried to introduce an amendment that part of the sum should be spent in surveying a railroad to the moon! And—"

"Can't be done, Eh?" said Flint.

"Granted," put in Waldron, "that my objection is futile, just what's your idea?"

"This!" And Flint stabbed at him with his forefinger, while the other financier regarded him with a fishily amused eye. "Every human being in this world—and there are 1,900,000,000 of them now!—is breathing, on the average, 16 cubic feet of air every hour, or about 400 a day. The total amount of oxygen actually absorbed in the 24 hours by each person, is about 17 cubic feet, or over 30 billions of cubic feet of oxygen, each day, in the entire world. Get that?"

"Well?" drawled the other.

"Don't you see?" snapped Flint, irritably. "Imagine that we extract oxygen from the air. Then—"

"You might as well try to dip up the ocean with a spoon," said Waldron, "as try to vitiate the atmosphere of the whole world, by any means whatsoever! But even if you could, what then?"