"But there was a station here, fitted out for handling your ships. That sounds like it was a regular port of call. And the books with the pictures: they prove your people have been here off and on for thousands of years. Why would they stop coming?"

"There are such beacons on a thousand worlds," said Foster. "Think of it as a buoy marking a reef, a trailblaze in the wilderness. Ages could pass before a wanderer chanced this way again. The fact that the ventilator shaft at Stonehenge was choked with the debris of centuries when I first landed there shows how seldom this world was visited."

I thought about it. Bit by bit Foster was putting together the jig-saw pieces of his past. But he still had a long way to go before he had the big picture, frame and all. I had an idea:

"Say, you said you were in the memory machine. You woke up there—and you'd just had your memory restored. Why not do the same thing again, now? That is, if your brain can take another pounding this soon."

"Yes," he said. He stood up abruptly. "There's just a chance. Come!"

I followed him out of the library into the room with the bones. He moved over to look down at them curiously.

"Quite a fracas," I said. "Three of 'em."

"This would be the room where I awakened," said Foster. "These are the men I saw dead."

"They're still dead," I said. "But what about the machine?"

Foster walked across to the fancy couch, leaned down beside it, then shook his head. "No," he said. "Of course it wouldn't be here...."