About it he could make out a thin gleaming of wires--a jury-rigged safety field. Within the flimsy-looking protective cage was a double bank of instruments, some of them alive with the flicker and glow of lights. Those must be the very expensive and difficult-to-build items Maulbow had brought out from the Hub. Beside them stood the machine, squat and ponderous. In the vague light, it looked misshaped and discolored. A piece of equipment that had taken a bad beating of some kind. But it was functioning. As he stared, intermittent bursts of clicking noises rose from it, like the staccato of irregular gunfire. For a moment, questions raced in disorder through his mind. What was it? Why had it been on that moon? Part of another ship, wrecked now ... a ship that had been at home _here_? Was it some sort of drive? Maulbow must know. He'd known enough to design the instruments required to bring the battered monster back to life. On the other hand, he had not foreseen in all detail what could happen once the thing was in operation, because the _Queen's_ sudden buck-jumping act had surprised him and knocked him out. The first step, in any event, was to get Maulbow awake now. To tamper with a device like this, before learning as much as one could about it, would be lunatic foolhardiness. It looked like too good a bet that the next serious mistake made by anybody would finish them all-- Perhaps it was only because Gefty's nerves were on edge that he grew aware at that point in his reflections of two minor signals from his senses. One was that the smell of ammonia, which he had almost stopped noticing, was becoming appreciably stronger. The other was the faintest of sounds--a whispering suggestion of motion somewhere behind him. But here in the storage vault nothing should have moved, and Gefty's muscles were tensing as his head came around. Almost in the same instant, he flung himself wildly to one side, stumbling and regaining his balance as something big and dark slapped heavily down on the floor at the point where he had stood. Then he was darting up through the entrance passage, turning, and knocking down the lock switches on the outside door panel. It came flowing around the corner of the passage behind him as the vault doors began to slide together. He was aware mainly of swift, smooth, oiling motion like that of a big snake; then, for a fraction of a second, a strip of brighter light from the outside passage showed a long, heavy wedge of a head, a green metal-glint of staring eyes.