I knew, though, that if they were to turn toward us by any chance the great cone-shaped cruiser-finders which are set in the sides of all war-cruisers and air-forts and air-cities, that we would be detected soon enough, since undoubtedly the patrol-ships beneath carried them also. Those great cone-like instruments, when turned in any direction can detect by means of super-sensitive induction-balances the operation of any electrostatic-motors. Fortune favored us, though, for without dreaming of our existence there above them the ring of patrol-cruisers, the circle of moving lights, moved smoothly on to the north while we held eastward until they had vanished behind us. Now as I spoke a swift order we were picking up speed again, our cruisers accelerating once more to their former velocity. I knew that we must be very near the southwestern coast of England. Our course lay high above that coast, taking us along a line that would lie midway between the two mighty air-cities of London and Paris, avoiding both purposely on our great flight toward the mightier air-city of Berlin. Soon, I knew, the great air-fort chain that guarded the whole western coasts of Europe would be drawing within sight, and intently enough we were peering forth in search of it, but though that must be passed still we had won through apparently, the outer patrols, without discovery. "It's hardly likely that they'd have a second line of outer patrols out," I said to Macklin, as we peered together through the dim night from the bridge-room of the rushing ship. "And once we get past the air-forts we'll have a good chance." He nodded. "They'll never dream of us making a raid upon them tonight, and if we aren't picked up by the air-forts' cruiser-finders we can reach--" He broke off, suddenly, and at the same moment as he, I gazed down toward the right. Another ring of moving lights was there in the darkness beneath, northward, too. But this one had paused for a moment and was slanting straight up toward us! "Another patrol!" Macklin's cry was echoed into the distance-phone. Another patrol--and it had seen us! And then, even as that patrol's twenty cruisers slanted up toward us, to challenge us, eighty of the cruisers of the lowest of our great triangle of ships had whirled like light down toward them, without command or formation, whirled down upon them massed together like a great striking thunderbolt of gleaming metal! For they knew, without need of command, that in an instant more the patrol-cruisers beneath would see and recognize the purpose of all our racing ships, would instantly with their distance-phones send the alarm spreading like flame over all the European Federation. And so our eighty down-rushing cruisers, massed solidly together, fired no guns and dropped no bombs, but simply flashed downward in a terrific ramming swoop and in an instant more had crashed their great mass squarely into the ring of the uprising European ships!