nothing relative to compare their speed with, and because the inertia-field sent all molecules of ship and contents ahead at the same rate of speed, there had been the sensation of staying at rest in the blackness of space. Now, there was something breathtaking in the way that the ship seemed to be dropping. Then the first tendrils of cloud whipped lazily about the Comet. There was the thrum of the rockets rising to a higher crescendo, and the force screen's voltemeter leaped higher to combat the friction of the tenuous air. Another second, and the great cottony batts of cloud pressed with invisible force against the ship. And then there was only a grey darkness outside, all light from the sun nullified by the thicknesses of clouds. Don Denton drifted the ship lower, his fingers flying over the control studs, handling the ship's weight as a horseman controls his mount by a light touch of the reins. There seemed to be no mental passage of time while the ship was sinking. Moments flowed into each other, and always the clouds seemed to be pressing with a tenuous strength at the quartzite ports. Then they were through the clouds, and a thousand feet below the ocean tossed and tumbled with a majestic silence that was thrilling and menacing. Don Denton's breath escaped with a tiny sigh of relief, and his eyes flashed to the girl's face, then back again to the window. He was conscious of the close scrutiny she had given him during those tense moments, and he wondered, irrelevantly, if he measured up to her standards. "Where's all of the light coming from?" she asked curiously. "From some sort of minute animal life in the oceans. The water is so filled with tiny worm-like forms of life that I doubt if you could find one cupful of clear water anywhere. They glow like fireflies, and the light generated is reflected back from the low clouds." Don Denton grinned. "I used to call Venus the 'Light bulb planet'!" "It's beautiful!" Jean breathed in rapture. Don Denton nodded, swung the Comet directly North. Beneath them, the ocean was a shifting, white-capped wash of silvery light, gleaming with a phosphorescent sheen, its turbulence a shifting kaleidoscope of shattered colors. And then the water was broken, and a scaly, blunt something darted out of the water, fell crashing