Grant reached in his watch-pocket and brought out the one he had kept out of the bag. He held it up and watched the sunlight, filtering through Venus's thick clouds, and the firelight, reflected from Red Lava Range two hundred miles away, play on the chatoyant interior of the stone as if they were chasing each other. Those stones would be worth forty thousand Earth dollars a pair if he could get them to a reputable dealer in Aphrodite, Venus's largest city. Therein lay Grant Russell's next problem, and in spite of the satisfaction he felt at emerging from the Great Swamp, he knew that getting safely to Aphrodite might be an even more serious problem. Aphrodite's only approach over the Lead Vapor Mountains from the southern hemisphere was through The Pass, a legalized city of vice. On one side The Pass was flanked by the Bubbling Zinc Pits and on the other side it was skirted by the Fluoride River, and man had not yet devised any way to navigate either of these. It was doubtful, even, that any species native to Venus could cross those two areas, but on this authorities did not agree for in the year 2542 Venus and its natives were still largely unknown. Not so far unknown, however, that Grant Russell failed to recognize the single luminous eye that had risen out of the water on a long, slender stalk. "A fish," he thought, or as some would have said, a Venusian. It saw that he was looking at it, and it dropped out of sight. There was the swirl of brown water that marked its under-surface progress. It swam like a fish, but it wasn't really a fish. It was one of Venus's four dominant species and the most "human" of all. The swirl moved fast across the surface of the water and disappeared in the direction of Aphrodite but Grant knew that its place would be taken within a few minutes by another. And if Grant had had any forlorn hope that he might be able to slip through The Pass, he gave it up, for he knew now that his movements were reported hourly and that his possession of the fabulous stones was undoubtedly known to Relegar, the Uranian. Relegar was the master of The Pass. He was no human and he had no human feelings. Killings and stealing were a business to him, and he had the most efficient spying system on any planet. It was well known unofficially that he kept an underground factory busy extracting a drug from the stamen of the swamp-orchid. The drug was labeled "Venus-snow," and Relegar found it highly profitable to trade it to the fish in the Sea-Swamp on the southwest and to the semi-aquatic people in the great Gallium Bogs to the southeast--some called them "frogs"--for information.