Rushing flames surrounded the burning airships, reducing them to a solid, welded mass of incandescent metal. Dick looked down, waiting for the next jerk that would summon him to join his men. At the moment he was not conscious of either fear or horror, only intense rage against the murderers and regret that he could never bring back the news of victory. * * * * * The cloud had almost dissipated. In place of the phosphorescence, electric lights had appeared, making the ground beneath perfectly visible. Dick could see a number of men grouped together at the entrance to a large building, part of which had been wrecked by a bomb, though there were no evidences of fire. Other structures had been dismantled and knocked about, but what remained of them had not been charred by fire. Evidently they had been fireproofed. Perhaps the gas itself was incombustible. Only in the middle of the tarmac, where the remnants of the airplanes blazed, was there any sign of fire. There were three machines resembling dynamos, placed one at each corner of the tarmac, equidistant from the central holocaust. A half-dozen men were grouped about each of them, and by the light from the huge reflector over each Dick saw that they were whirring busily. At the time it did not occur to him that these were the machines that were sending out the electrical force that had held the airplanes powerless. But as he looked, his mind still a turmoil of hate and hopeless anger, he saw one of the three machines cease whirring. The group about it dispersed, the light above went out. And now his plane, as if drawn by the power of the two remaining machines, began to move jerkily again, not down toward the burning wreckage, but sidewise, away from it. Straight out toward the side of the tarmac it moved jerked downward diagonally, until it rested only a few feet above the ground. Then suddenly Dick felt the plane quiver, as if released from the power of the force that had held it. It nosed down and crashed, rolled over amid the wreckage of a shattered wing. The concussion shot Dick from the cockpit clear of the smashed machine. He landed upon his head, and went out instantly. CHAPTER IX _The Invisible Emperor_ It was the sound of his name, spoken repeatedly, that brought Dick back to consciousness. He opened his eyes, blinking in broad daylight. He stared about him, and the first thing he saw was Luke Evans, regarding him anxiously from a little distance away. He saw that it was Luke who had spoken. He had heard the old man distinctly. The condition of inaudibility was gone.