"At least," said Sidney, indicating the articles on the table, "we'll have these for evidence." He held up the sheaf of papers containing Huk's story. "And this, giving the real reason the cliff dwellers left. I haven't told you what it was, George. It's so simple that—"

He didn't complete his sentence, for just then Huk, Good Fox, Moon Water, and the other warriors made their choice. It was announced dramatically.

The water jug, the aspergill, and the atlatl and quiver of lances disappeared from the table. In their places, suddenly, there were the thermos and the binoculars.

Sidney stared stupidly at them.

George said quietly, "They've gone back."

"But they can't do this!" George protested.

"They have."

Sidney's hand shook as he picked up the sheaf of papers holding Huk's story. Indicating it and the photographs, he said, "Well, they haven't taken these away."

"Haven't they?" asked George. He picked up some of the pictures. "Look."

Sidney looked and saw that the pictures were now blank. His glance went quickly to the typewritten sheets of paper in his hands. He cried out and then shuffled them frantically.