For now I sent Berlin whirling downward in another terrific swoop across the mass of our enemy cities and it sheared across half their mass, as they sought by rising or sinking to avoid that deadly swoop. But a half-score were left of them now, and now the half-hundred cities of the American Federation had gathered about them and were hammering them with terrific fire. No gun sounded now on Berlin, all its crews and soldiers were rushing wildly across it toward the electrostatic tower, as the city whirled and crashed and fought and ran there against their own allied cities! Caught in the terrific fire of the cities around them, the half-score European and Asiatic cities were going down with guns thundering into annihilation. But now I was aware at the same moment of a terrific uproar there at the tower's doors and of wild shouts and clanging blows there as our men fought to hold back the madly surging crowds outside! Gripping the levers before me for one last effort, I jerked open the speed-control to its widest; and then, as it shot above the mass of the European and Asiatic cities, only a half-dozen in number now, I whirled the mighty mass of Berlin down upon them in one last tremendous swoop from which they sought in vain to swerve. They too were hesitating for a moment and then went whirling down to death, the last of the European and Asiatic cities save for Berlin itself about me! And then, as I brought that city to a stay, with the last of its companions crashing beneath and with the American cities hanging all about us now, there was a great clang of falling metal at the tower's doors, and back through them wild crowds without were pushing our black-uniformed defenders! Connell and Hilliard at their head, our men were being pushed back through the ante-rooms, back toward the great circular room in which I sat at the controls; and, as I gazed out through the opening in the great periscope ball about me, I saw that an instant more would see them overpowering the last of our men, rushing in upon me to take the city's controls once more! But as I saw that, I reached forward, slammed down the lever that sent the city rushing downward! I gripped that lever and with a supreme effort tore it completely from its socket! The next moment a wilder cry came from the crowds fighting through the door and the crowds over all the city outside, as they felt that city whirling and swaying beneath them, felt it whirling down to death through the night to annihilation!