If the animals went away in search of shelter from the storms, do
you think the Cave-men would know where they went? What do you
think they would say when they noticed that the animals had gone?
[Illustration: _Two views of a curved bone tool used by the
Cave-men in polishing skins._]
How did the Cave-men learn what they knew? Why did they make more
mistakes than people do to-day?
What changes did the Cave-men see take place in the buds? in seeds?
in eggs?
When they found shells in the hard rocks instead of in the water,
what do you suppose they would think?