Flint worked on.
"We make all of our axes and spear heads and knives and scrapers of flint," he said after a while. "It chips more easily than any other stone."
After some time Flint and the boy left the stone yard.
[Illustration: Deer antlers]
CHAPTER IX
AT THE GRAVEL PIT
As they walked along, the old man pointed to a place in the hillside and said, "That is the gravel bed. From it we dig all the stone for our axes and spear heads."