Flanked by the jungle growth which sprouted thickly from each bank, a gray, ghostly shape in the shadows lying over the water, he sped through the dying afternoon. He kept at least ten feet above the surface, well out of reach of such water beasts as from time to time reared up through the placid surface to scan him. Once a huge gantor, gulping a drink from the bank, snorted and went trumpeting away at the grotesque sight of him--flying without wings!--and once too, on rising cautiously above the treetops to reconnoiter, Carse saw life far more perilous to him: a small party of men, stooping over a swamp-brink and plucking the ripe isuan weed. At this he dived steeply and fled on; and he knew he had gone unobserved, for there came no outcry of discovery from behind. * * * * * Jupiter lowered its murky disk as the miles streamed past, breeding a legion of shadows welcome to the fabric-clad monster skimming through them and to the creatures who blinked and stirred as night approached. The stream broadened into shallow pockets; patches of swamp appeared and absorbed the stream; and Carse knew he was close to his destination. He cut his speed and glanced around. Ahead, the dark spire of a giant sakari tree climbed into the gloom. It would be a good place. The man rose slowly; like a wraith on the wind he lifted into its top-most branches; and there, in the broad, cuplike leaves, he warily ensconced himself. For man-sounds came into his opened helmet, and through a fringe of leaves, across a mile of tumbled swamp and marsh, he could see the guarding fences of the cosmetropolis of Porno. A last slice of blotched, flaming red, the rim of setting Jupiter, still silhouetted Porno, sprawled inside its high, electric-wired fences, and the flood of fading light brushed the town with beauty. The rows of tin shacks which housed its dives, the clustered, nondescript hovels, the merchants' grim strongholds of steel--all merged into a glowing mirage, a scene far alien to the brooding swamp and savage jungle in whose breast it lay. Here and there several space-ships reared their sunset-gilded flanks, glittering high-lights in the final glorious burst of Jupiter-light.... The planet's rim vanished abruptly, and Porno returned to true character.