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.

The Indians uttered a short, sharp cry, then aimed their rifles at the
figures of the two fleeing Pony Rider Boys.

Tad saw the movement. He threw himself prone upon the ground, jerking
Chunky down beside him.

They were screened from the eyes of the enemy, for the moment.

"Crawl! Crawl!" commanded Tad.