"Herzog," announced the Billionaire, "will be here in ten minutes, and we'll get down to business."

"So?" languidly commented the immaculate Waldron. "Well, much as I'd like to flatter your astuteness, Flint, I'm bound to say you're barking up a false trail, this time! Beef, yes. Steel, yes. Railroads, steamships, coal, iron, wheat, yes. All tangible, all concrete, all susceptible of being weighed, measured, put in figures, fenced and bounded, legislated about and so on and so forth. But _air_--!"

He snapped his manicured fingers, to show his well-considered contempt for the Billionaire's scheme, and, throwing away his smoked-out cigar, chose a fresh one.

Flint made no reply, but with an angry grunt flung a look of scorn at the calm and placid one. Then, furtively opening his desk drawer, he once more sought the little vial and took two more pellets--an action which Waldron, without moving his head, complacently observed in a heavily-bevelled mirror that hung between the windows.

"Air," murmured Waldron, suavely. "Hot air, Flint?"

No answer, save another grunt and the slamming of the desk-drawer.

And thus, in silence, the two men, masters of the world, awaited the coming of the practical scientist, the proletarian, on whom they both, at last a.n.a.lysis, had to rely for most of their results.

CHAPTER III.

THE BAITING OF HERZOG.

Herzog was not long in arriving. To be summoned in haste by Isaac Flint, and to delay, was unthinkable. For eighteen years the chemist had lickspittled to the Billionaire. Keen though his mind was, his character and stamina were those of a jellyfish; and when the Master took snuff, as the saying is, Herzog never failed to sneeze.

He therefore appeared, now, in some ten minutes--a fat, rubicund, spectacled man, with a cast in his left eye and two fingers missing, to remind him of early days in experimental work on explosives. Under his arm he carried several tomes and pamphlets; and so, bowing first to one financier, then to the other, he stood there on the threshold, awaiting his masters' pleasure.

"Come in, Herzog," directed Flint. "Got some material there on liquid air, and nitrogen, and so on?"

"Yes, sir. Just what is it you want, sir?"

"Sit down, and I'll tell you,"--for the chemist, hat in hand, ventured not to seat himself unbidden in presence of these plutocrats.

Herzog, murmuring thanks for Flint's gracious permission, deposited his derby on top of the revolving book-case, sat down tentatively on the edge of a chair and clutched his books as though they had been so many shields against the redoubted power of his masters.

"See here, Herzog," Flint fired at him, without any preliminaries or beating around the bush, "what do you know about the practical side of extracting nitrogen from atmospheric air? Or extracting oxygen, in liquid form? Can it be done--that is, on a commercial basis?"

"Why, no, sir--yes, that is--perhaps. I mean--"

"What the devil _do_ you mean?" snapped Flint, while Waldron smiled maliciously as he smoked. "Yes, or no? I don't pay you to muddle things.

I pay you to _know_, and to tell me! Get that? Now, how about it?"

"Well, sir--hm!--the fact is," and the unfortunate chemist blinked through his gla.s.ses with extreme uneasiness, "the fact of the matter is that the processes involved haven't been really perfected, as yet.

Beginnings have been made, but no large-scale work has been done, so far. Still, the principle--"

"Is sound?"

"Yes, sir. I imagine--"

"Cut that! You aren't paid for imagining!" interrupted the Billionaire, stabbing at him with that characteristic gesture. "Just what do you know about it? No technicalities, mind! Essentials, that's all, and in a few words!"

"Well, sir," answered Herzog, plucking up a little courage under this pointed goading, "so far as the fixation of atmospheric nitrogen goes, more progress has been made in England and Scandinavia, than here.

They're working on it, over there, to obtain cheap and plentiful fertilizer from the air. Nitrogen _can_ be obtained from the air, even now, and made into fertilizers even cheaper than the Chili saltpeter.

Oxygen is liberated as a by-product, and--"

"Oh, it is, eh? And could it be saved? In liquid form for instance?"

"I think so, sir. The Siemens & Halske interests, in Germany, are doing it already, on a limited scale. In Norway and Austria, nitrogen has been manufactured from air, for some years."

"On a paying, commercial basis?" demanded Flint, while Waldron, now a trifle less scornful, seemed to listen with more interest as his eyes rested on the rotund form of the scientist.

"Yes, sir, quite so," answered Herzog. "It's commercially feasible, though not a very profitable business at best. The gas is utilized in chemical combination with a substantial base, and--"

"No matter about that, just yet," interrupted Flint. "We can have details later. Do you know of any such business as yet, in the United States?"

"Well, sir, there's a plant building at Great Falls, South Carolina, for the purpose. It is to run by waterpower and will develop 5000 H.P."

"Hear that, Waldron?" demanded the Billionaire. "It's already beginning even here! But not one of these plants is working for what I see as the prime possibility. No imagination, no grasp on the subject! No wonder most inventors and scientists die poor! They incubate ideas and then lack the warmth to hatch them into general application. It takes men like us, Wally--practical men--to turn the trick!" He spoke a bit rapidly, almost feverishly, under the influence of the subtle drug. "Now if _we_ take hold of this game, why, we can shake the world as it has never yet been shaken! Eh, Waldron? What do you think now?"

Waldron only grunted, non-committally. Flint with a hard glance at his unresponsive partner, once more turned to Herzog.

"See here, now," directed he. "What's the best process now in use?"

"For what, sir?" ventured the timid chemist.

"For the simultaneous production of nitrogen and oxygen, from the atmosphere!"

"Well, sir," he answered, deprecatingly, as though taking a great liberty even in informing his master on a point the master had expressly asked about, "there are three processes. But all operate only on a small scale."

"Who ever told you I wanted to work on a large scale?" demanded Flint, savagely.

"I--er--inferred--beg pardon, sir--I--" And Herzog quite lost himself and floundered hopelessly, while his mismated eyes wandered about the room as though seeking the a.s.surance he so sadly lacked.

"Confine yourself to answering what I ask you," directed Flint, crisply.

"You're not paid to infer. You're paid to answer questions on chemistry, and to get results. Remember _that_!"

"Yes, sir," meekly answered the chemist, while Waldron smiled with cynical amus.e.m.e.nt. He enjoyed nothing so delightedly as any grilling of an employee, whether miner, railroad man, clerk, ship's captain or what-not. This baiting, by Flint, was a rare treat to him.

"Go on," commanded the Billionaire, in a badgering tone. "What are the processes?" He eyed Herzog as though the man had been an ox, a dog or even some inanimate object, coldly and with narrow-lidded condescension.

To him, in truth, men were no more than Sh.e.l.ley's "plow or sword or spade" for his own purpose--things to serve him and to be ruled--or broken--as best served his ends. "Go on! Tell me what you know; and no more!"

"Yes, sir," ventured Herzog. "There are three processes to extract nitrogen and oxygen from air. One is by means of what the German scientists call _Kalkstickstoff_, between calcium carbide and nitrogen, and the reaction-symbols are--"

"No matter," Flint waived him, promptly. "I don't care for formulas or details. What I want is results and general principles. Any other way to extract these substances, in commercial quant.i.ties, from the air we breathe?"

"Two others. But one of these operates at a prohibitive cost. The other--"

"Yes, yes. What is it?" Flint slid off the edge of the table and walked over to Herzog; stood there in front of him, and bored down at him with eager eyes, the pupils contracted by morphine, but very bright. "What's the best way?"

"With the electric arc, sir," answered the chemist, mopping his brow.

This grilling method reminded him of what he had heard of "Third Degree"