torments. "That's the best method, sir."

"Now in use, anywhere?"

"In Notodden, Norway. They have firebrick furnaces, you understand, sir, with an alternating current of 5000 volts between water-cooled copper electrodes. The resulting arc is spread by powerful electro-magnets, so." And he ill.u.s.trated with his eight acid-stained fingers. "Spread out like a disk or sphere of flame, of electric fire, you see."

"Yes, and what then?" demanded Flint, while his partner, forgetting now to smile, sat there by the window scrutinizing him. One saw, now, the terribly keen and prehensile intellect at work under the mask of a.s.sumed foppishness and jesting indifference--the quality, for the most part masked, which had earned Waldron the nickname of "Tiger" in Wall Street.

"What then?" repeated Flint, once more levelling that potent forefinger at the sweating Herzog.

"Well, sir, that gives a large reactive surface, through which the air is driven by powerful rotary fans. At the high temperature of the electric arc in air, the molecules of nitrogen and oxygen dissociate into their atoms. The air comes out of the arc, charged with about one per cent. of nitric oxide, and after that--"

"Jump the details, idiot! Can't you move faster than a paralytic snail?

What's the final result?"

"The result is, sir," answered Herzog, meek and cowed under this harrying, "that calcium nitrate is produced, a very excellent fertilizer. It's a form of nitrogen, you see, directly obtained from air."

"At what cost?"

"One ton of fixed nitrogen in that form costs about $150 or $160."

"Indeed?" commented Flint. "The same amount, combined in Chile saltpeter, comes to--?"

"A little over $300, sir."

"Hear that, Wally?" exclaimed the Billionaire, turning to his now interested a.s.sociate. "Even if this idea never goes a step farther, there's a gold mine in just the production of fertilizer from air! But, after all, that will only be a by-product. It's the oxygen we're after, and must have!"

He faced Herzog again.

"Is any oxygen liberated, during the process?" he demanded.

"At one stage, yes, sir. But in the present process, it is absorbed, also."

Flint's eyebrows contracted nervously. For a moment he stood thinking, while Herzog eyed him with trepidation, and Waldron, almost forgetting to smoke, waited developments with interest. The Billionaire, however, wasted but scant time in consideration. It was not money now, he l.u.s.ted for, but power. Money was, to him, no longer any great desideratum. At most, it could now mean no more to him than a figure on a check-book or a page of statistics in his private memoranda. But power, unlimited, indisputable power over the whole earth and the fulness thereof, power which none might dispute, power before which all humanity must bow--G.o.d!

the l.u.s.t of it now gripped and shook his soul.

Paling a little, but with eyes ablaze, he faced the anxious scientist.

"Herzog! See here!"

"Yes, sir?"

"I've got a job for you, understand?"

"Yes, sir. What is it?"

"A big job, and one on which your entire future depends. Put it through, and I'll do well by you. Fail, and by the Eternal, I'll break you! I can, and will, mark that! Do you get me?"

"I--yes, sir--that is, I'll do my best, and--"

"Listen! You go to work at once, immediately, understand? Work out for me some process, some practicable method by which the nitrogen and oxygen can both be collected in large quant.i.ties from the air.

Everything in my laboratories at Oakwood Heights is at your disposal.

Money's no object. Nothing counts, now, but _results_!

"I want the process all mapped out and ready for me, in its essential outlines, two weeks from today. If it isn't--" His gesture was a menace.

"If it is--well, you'll be suitably rewarded. And no leaks, now. Not a word of this to any one, understand? If it gets out, you know what I can do to you, and will! Remember Roswell; remember Parker Hayes. _They_ let news get to the Dillingham-Saunders people, about the new Tezzoni radio-electric system--and one's dead, now, a suicide; the other's in Sing-Sing for eighteen years. Remember that--and keep your mouth shut!"

"Yes, sir. I understand."

"All right, then. A fortnight from today, report to me here. And mind you, have something to report, or--!"

"Yes, sir."

"Very well! Now, go!"

Thus dismissed, Herzog gathered together his books and papers, blinked a moment with those peculiar wall-eyes of his, arose and, bowing first to Flint and then to the keenly-watching Waldron, backed out of the office.

When the door had closed behind him, Flint turned to his partner with a nervous laugh.

"That's the way to get results, eh?" he exclaimed. "No dilly-dallying and no soft soap; but just lay the lash right on, hard--they jump then, the vermin! Results! That fellow will work his head off, the next two weeks; and there'll be something doing when he comes again. You'll see!"

Waldron laughed nonchalantly. Once more the mask of indifference had fallen over him, veiling the keen, incisive interest he had shown during the interview.

"Something doing, yes," he drawled, puffing his cigar to a glow. "Only I advise you to choose your men. Some day you'll try that on a real man--one of the rough-necks you know, and--"

Flint snapped his fingers contemptuously, gazed at Waldron a moment with unwinking eyes and tugged at his mustache.

"When I need advice on handling men, I'll ask for it," he rapped out.

Then, glancing at the Louis XIV clock: "Past the time for that C.P.S.

board-meeting, Wally. No more of this, now. We'll talk it over at the Country Club, tonight; but for the present, let's dismiss it from our minds."

"Right!" answered the other, and arose, yawning, as though the whole subject were of but indifferent interest to him. "It's all moonshine, Flint. All a pipe-dream. Defoe's philosophers, who spent their lives trying to extract sunshine from cuc.u.mbers, never entertained any more fantastic notion than this of yours. However, it's your funeral, not mine. You're paying for it. I decline to put in any funds for any such purpose. Amuse yourself; you've got to settle the bill."

Flint smiled sourly, his gold tooth glinting, but made no answer.

"Come along," said his partner, moving toward the door. "They're waiting for us, already, at the board meeting. And there's big business coming up, today--that strike situation, you remember. Slade's going to be on deck. We've got to decide, at once, whether or not we're going to turn him loose on the miners, to smash that gang of union thugs and Socialist fanatics, and do it right. _That's_ a game worth playing, Flint; but this Air Trust vagary of yours--stuff and nonsense!"

Flint, for all reply, merely cast a strange look at his partner, with those strongly-contracted pupils of his; and so the two vultures of prey betook themselves to the board room where already, round the long rosewood table, Walter Slade of the Cosmos Detective Company was laying out his strike-breaking plans to the attentive captains of industry.

CHAPTER IV.

AN INTERLOPER.

On the eleventh day after this interview between the two men who, between them, practically held the whole world in their grasp, Herzog telephoned up from Oakwood Heights and took the liberty of informing Flint that his experiments had reached a point of such success that he prayed Flint would condescend to visit the laboratories in person.

Flint, after some reflection, decided he would so condescend; and forthwith ordered his limousine from his private garage on William Street. Thereafter he called Waldron on the 'phone, at his Fifth Avenue address.