Gazing ahead, as our cruiser drove onward, I was as silent as Macklin, at the wheel beside me, and as young Hilliard, who had come up into the bridge-room from beneath. Far beneath us the green plains were rolling swiftly backward, as our motors hummed their unceasing song of power. Those great electric motors drew their current in limitless quantities from the electrostatic or atmospheric electricity surrounding the earth, by means of great transformers that changed it from electrostatic to current electricity to give us a power that could hurl us forward with almost unlimited endurance and speed. Connected as they were to our great horizontal tube-propellers, which were set in the cruiser's walls and which moved it forward by drawing immense volumes of air at vast speed through themselves from ahead, those motors could fling us on at more than a thousand miles an hour. This utmost force, as our indicators told us, was shooting us eastward now. Beneath us the green plains had given way to the great tumbled folds and peaks of the Alleghanies. Somewhere to the south lay Pittsburgh, and to the north Cleveland and Buffalo, but being headed directly to New York, we therefore did not see them. Beneath us we could make out in swift flashes of vision masses of the air-traffic between those cities, great passenger-liners and bulky freight-carriers and slender private craft, but in our own military-craft level there moved only a few cruisers like our own racing eastward toward New York in answer to the alarm. With these, however, there was small danger of collision. Now the Alleghanies had dropped behind and we were rocketing over the rolling, pleasant countryside that lies between them and the eastern Appalachians. As we shot on I gazed downward, over the green and silent and empty landscape rushing beneath us, and wondered momentarily what a citizen of fifty years ago would have thought to see this once-populous land over which we were speeding lying as lifeless and deserted beneath us as it was now. Then it had given way to the greater folds and ridges of the Appalachians, and then, as we shot on and over their tumbled masses, Macklin lifted his hand from the wheel to point ahead. "The air-forts!" he said. On to New York