“He meant that we could climb up and jump down in a day,” answered Hippy.
It was late in the afternoon when the Overland Riders fully realized that some mysterious change had taken possession of them. Emma Dean declared that she tingled all over her body, and Nora confessed to a similar sensation.
Stacy Brown laughed boisterously, then suddenly leaped to one side, suspiciously eyeing the spot on which he had been standing.
“What is the matter with you?” demanded Tom Gray.
“I—I reckon there must be fleas up here,” declared Chunky. “They are biting me all over.” About this time Hippy Wingate, who was laughing at Stacy’s suggestion of fleas, suddenly changed his position.
“There is something peculiar about this place,” he cried. “Tom, don’t you get it?”
“No.”
“Come over and stand here by me.”
Tom did so, but hurriedly moved away. About this time Grace and Elfreda, finding a smooth ledge, began to dance. Tom pulled them from the ledge and told them to keep away from it. The faces of the two girls grew a shade paler.
“Tom, Tom! What is it?” breathed Grace. “What does this mean?”