Half an hour's run down Staten Island, along smooth roads lined with sleepy little towns and through sparse woods beyond which sparkled the shining waters of the harbor, brought the two plutocrats to the quiet settlement of Oakwood Heights.

Now the blasé chauffeur swung the car sharply to the left, past the aviation field, and so came to the wide-scattered settlement—almost a colony—which, hidden behind high, barb-wire-topped fences, carried on the many and complex activities of the partners' experiment station. Here were the several laboratories where new products were evolved and old ones refined, for Flint's and Waldron's greater profit. Here stood a complete electric power plant, for lighting and heating the works, as well as for current to use in the retorts and many powerful machines of the testing works.

Here, again, were broad proving grounds, for fuel and explosives; and, at one side, stood a low, skylighted group of brick buildings, known as the electro-chemical station. Dormitories and boarding-houses for the small army of employees occupied the eastern end of the enclosure, nearest the sea. Over all, high chimney stacks and the aerials of a mighty wireless plant dominated the entire works. A private railroad spur pierced the western side of the enclosure, for food and coal supplies, as well as for the handling of the numerous imports and exports of this wonderfully complete feudal domain. As the colony lay there basking in the sunshine of early spring, under its drifting streamers of smoke, it seemed an ideal picture of peaceful activities. Here a locomotive puffed, shunting cars; there, a steam-jet flung its plumes of snowy vapor into air; yonder, a steam hammer thundered on a massive anvil. And forges rang, and through open windows hummed sounds of industry.

And yet, not one of all those sounds but echoed more bitter slavery for men. Not one of all those many activities but boded ill to humanity. For the whole plan and purpose of the place was the devising of still wider forms of human exploitation and enslavement. Its every motive was to serve the greed of Flint and Waldron. Outwardly honest and industrious, it inwardly loomed sinister and terrible, a type and symbol of its masters' swiftly growing power. Such, in its essence, was the great experiment station of these two men who lusted for dominion over the whole world.

As the long, glittering car drew up at the main gate of the enclosure, a sharp-eyed watchman peered through a sliding wicket therein. Satisfied by his inspection, he withdrew; and at once the big gate rolled back, smoothly actuated by electricity. The car purred onward, into the enclosure. When the gate had closed noiselessly behind it, the chauffeur ran it down a splendidly paved roadway, swung to the right, past the machine shops, and drew it to a stand in front of the administration building.

Flint and his partner alighted, and stood for a moment surveying the scene with satisfaction. Then Flint turned to the chauffeur.

"Put the car in the garage," he directed. "We may not want it till afternoon."

The blasé one touched his cap and nodded, in obedience. Then, as the car withdrew, the partners ascended the broad steps.

"Good chap, that Herrick," commented Waldron, casting a glance at the retreating chauffeur. "Quick-witted, and mum. Give me a man who knows how to mind and keep still about it, every time!"

"Right," assented Flint. "Obedience is the first of all virtues, and the second is silence. Well, it looks to me as though we had the whole world coming our way, now, along that very same path of virtue. Once we get this air proposition really to working, the world will obey. It will have to! And as for silence, we can manage that, too. The mere turn of a valve, and—!"