But the boys had not counted upon the bison’s tough skin. They had not counted upon his muscles, which were as hard as boards. Flaker’s dagger glanced off at one side and merely scratched the bison. But it made the creature so angry that he charged upon Flaker.

Meanwhile Fleetfoot was doing his best to cut the hard muscles of the bison’s knee. He forgot about everything else until he had lamed one of the forelegs. It was then that the bison charged and that Flaker called for help. And then Fleetfoot tried to rescue Flaker by drawing the bison’s attention away.

Fleetfoot did this just in time to save Flaker’s life. He struck at the Bison’s head, then dodged in time to escape his horns. He dodged again and again until he was almost exhausted. The bison limped, but he seemed as strong and as furious as ever. Once again the bison charged, and again Fleetfoot dodged. Then a spear whizzed past Fleetfoot’s head and a voice called, “Climb a tree.”

“They looked so much like wolves that they got very close before the bison threatened.”

Fleetfoot never remembered running to the tree. He never remembered climbing it. But for many days he seemed to see himself in the tree and the bison just beneath. For many days he seemed to hear Greybeard’s welcome voice.

A Cave-man’s carving of a “hamstrung” animal.

Greybeard and Fleetfoot stayed in the trees until the bison started up the ravine. Then they climbed down from one of the trees and hurried to see what had happened to Flaker.