On we went, and as Randall's hands flashed over the control-switches, Marlin and Whitely and I staring tensely forth with him, we were aware that from the mass of onracing cylinders behind slender force-rays were again questing toward us, though the range was too great for them to loose them accurately at this terrific speed. At any moment, though, one of those concentrated, pencil-like rays might cleave through our space-flier in a lucky hit, and unless we escaped from these relentless pursuers, the space-flier and ourselves were certain of destruction. This I saw, and saw too that Neptune's colossal cloudy sphere lay close before us, so awful was the speed of our flight and pursuit, and as it loomed gigantic before us, filling the heavens, it was apparent that we would pass close above its surface. Suddenly I turned to Randall, shouted in his ear above the thundering throbbing drone of our generators. "Neptune!" I cried. "There's a chance to smash these pursuing cylinders there!" "But how--?" he began. Shouting in his ear, I explained to him the desperate inspiration that had come to me. I saw his eyes and those of Marlin and Whitely widen as they heard, and then he nodded grimly, clutched the control-switches tighter. And now about us was sounding again the roar of air as we shot through Neptune's atmosphere, shot above the surface of the huge planet with the cylinders rushing still at equal speed behind us, their deadly rays stabbing this way and that in slicing sweeps toward us. Through the cloudy mists of Neptune's upper atmosphere we flashed, straight onward, with the dark metal surface of the giant world's vast roof clear now to our eyes far beneath. And as we shot over it I saw Randall's grip tighten on the control-switches, saw him glance back toward the pursuing cylinders, behind and a little beneath us, and then abruptly he had flung open the switch of the great force-ray that was driving us on, our rear-ray! Instantly the speed of the space-flier slowed, and in a split-second the onrushing cylinders, racing on unslowing in that moment, were hurtling past beneath us. And as they did so, another switch had clicked under Randall's hands and straight down upon those cylinders from the space-flier's bottom was driving down another mighty force-ray!