Swiftly, the rebellious one drew a knife of glass from a sheath and slashed with careless skill at the corpse. He extracted one of the alien organs and placed it in a container which he carried. With no other word, he left, and the two women followed sorrowfully and more slowly. They refused to speak further. Underwood watched them go. "We seem to have gained a corpse," he said. "Get a couple of the men to take it out and bury it, will you, Terry? I wonder what the whole thing means, anyway. Are these remnants of Sirenian culture?" His speculations were suddenly interrupted by the blaring of the interphone. "Doctor Underwood, lookout reports entire Terrestrian fleet departing from the Dragboran planet!" The group in surgery looked at each other in sudden silence. * * * * * "It doesn't make sense," Terry said finally. "It does," said Underwood slowly. "If they have found and destroyed what we hoped to find." "Also if they wanted to draw us out of hiding," added Dreyer. "We'd better wait a couple of days and see what they do. If they seem to be intent on continuing their flight, we can move to the planet with the sun behind us and they won't detect it. But I think that we should wait the two days at least, so if one wants to do any looking around on this moon, there's his chance." Terry was enthusiastic about exploring the moon. It seemed that here might be a living fragment of a civilization thousands of years old, which should have been long dead in the normal course of events, but which had somehow survived the catastrophes that wiped out the parent civilizations. Illia too, was anxious to get away from the ship. Together, they persuaded Underwood to join them in a scooter exploration of the surrounding territory. Phyfe and Dreyer were going, but it was necessary for Mason to remain in technical command at the ship. Beyond the grassy plain lay a thickly forested section. The scooter party rose high into the air to clear the wooded area and were lost to the view of those aboard the _Lavoisier_. For a long time they rode at treetop level, looking beyond toward the barren sand wastes that touched the far horizon. Suddenly Terry pointed downward. "A road!" A shimmering belt ran through the forest almost at right angles to their line of flight. They dropped into the sylvan canyon to examine it. Underwood halted just above the surface. Then he leaned over and touched it. * * * * * Dreyer looked at his puzzled face without halting the column of cigar smoke. "Glass, eh?" "Looks and feels like it, but a glass highway--!"