At the same time he began crawling toward the edge of the rock at their rear. Stacy was close upon his heels.

The side which the boys were to descend was much more precipitous than the one they had come up by, but offered no very great difficulties for two nimble boys. Proceeding with infinite caution, they gained the ground without a mishap.

"We'll walk straight on in this direction, until we get out of sight; then we can turn to the left and hurry to the camp."

Stacy nodded. As he did so his eyes were off the ground for a few seconds. Those few seconds proved his undoing.

The lad stepped on a stone that gave way under him, turning his ankle almost upon its side.

"Ouch!" yelled Chunky.

"Now you've done it," snapped Tad. "We'll have the whole pack of them down on us. Can you walk?"

"I—I don't know. I'll try."

"Take hold of my hand. You've got to run."

The redskins were on their feet in an instant. A few bounds carried them around the rock whence the exclamation had come. By this time Tad had dragged his companion into the bushes but not quickly enough to elude the keen eyes of the savages.