Aimlessly they continued their leisurely course across a vast plain. There were no great mountains on Venus, for this world had known no such violent upheaval as the making of a moon. The men were lost in thought, each intent on his own ideas. At length Wade stood up, and walked slowly back to the power room. Suddenly the men in the control room heard his call: "Arcot--quick--the microphone--and rise a mile!" The _Solarite_ gave a violent lurch as it shot vertically aloft at tremendous acceleration. Arcot reached over swiftly and snapped the switch of the microphone. There burst in upon them the familiar roaring drone of a hundred huge propellers. No slightest hum of motor, only the vast whining roar of the mighty props. "Another one! They must have been following the first by a few minutes. We'll get this one!" Arcot worked swiftly at his switches. "Wade--strap yourself in the seat where you are--don't take time to come up here." They followed the same plan which had worked so well before. Suddenly invisible, the _Solarite_ flashed ahead of the great plane. The titanic wave of rushing sound engulfed them--then again came the little hiss of the gas. Now there were no hills in sight, as far as the eye could see. In the dim light that seemed always to filter through these gray clouds they could see the distant, level horizon. Several dragging minutes passed before there was any evident effect; the men from Earth were waiting for that great ship to waver, to wobble from its course. Suddenly Arcot gave a cry of surprise. Startled amazement was written all over his face, as his companions turned in wonderment to see that he was partially visible! The _Solarite_, too, had become a misty ghost ship about them; they were becoming visible! Then in an instant it was gone--and they saw that the huge black bulk behind them was wavering, turning; the thunderous roar of the propellers fell to a whistling whine; the ship was losing speed! It dipped, and shot down a bit--gained speed, then step by step it glided down--down--down to the surface below. The engines were idling now, the plane running more and more slowly. They were near the ground now--and the watchers scarcely breathed. Would this ship, too, crash? It glided to within a half mile of the plain--then it dipped once more, and Arcot breathed his relief as it made a perfect landing, the long series of rollers on the base of the gigantic hull absorbing the shock of the landing. There were small streams in the way--a tree or two, but these were obstacles unnoticed by the gargantuan machine. Its mighty propellers still idling slowly, the huge plane rolled to a standstill. Swooping down, the _Solarite_ landed beside it, to be lost in the vast shadows of the mighty metal walls.