"Why—I don't know," said Ben. "Anybody here got any ideas on how to find out?"

"It would take an experienced astronomer and some calculation to determine with accuracy," said Beeville. "We'd better set an arbitrary date."

"O. K. Then it's May 1, 1947. That's two years ahead of time, but it will take that long to find out what it really is."

The assumption that sleep would be unnecessary proved correct. All night long, cars roared up to the door and away again on their quests. The number of people found was small—the cream had apparently been gathered that morning. O'Hara brought in a metallic scrubwoman from one of the downtown buildings, the tines that represented her teeth showing stains of rust where she had incautiously drunk water; Stevens turned up with a slow-voiced young man who proved to be Georgios Pappagourdas, the attaché of the Greek consulate whose name had been in the papers in connection with a sensational divorce case; and Mrs. Roberts came in with two men, one of them J. Sterling Vanderschoof, president of the steamship lines which bore his name.

At dawn Dangerfield came in. He had set up a powerful receiving set by means of storage batteries but could find no messages on the air, and could find no source of power sufficient for him to broadcast.

The morning, therefore, saw another and somewhat less optimistic conference. As it was breaking up Ben said, "You Tholfsen, take Stevens, Vanderschoof and Lee and get a truck, will you? You'll find one about half a block down the street. Go up to one of the coal pits and get some fuel for our boilers here. We haven't too large a supply."

There was a clanking of feet as they left and Ben turned into the laboratory where Beeville was working, with the scrubwoman as a subject.

"Something interesting here," said the naturalist, looking up as he entered. "The outer surface of this metal appears to be rust-proof, but when you get water on the inside, things seem to go. It acts like a specially annealed compound of some kind. And look—" He seized one of the arms of his subject, who gazed at him with mildly unresisting eyes, and yanked at the outer layer of metal bands that composed it. The band stretched like one of rubber, and she gave a slight squeal as it snapped back into position. "I don't know of any metal that has that flexibility. Do you? Why—"

The door swung open and they turned to see Murray and Tholfsen.

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