to the right.
He motioned for others to go to the left.
He wanted to surround the animals.
The strange creatures soon caught sight of the hunters.
They huddled together like frightened sheep.
Then the men thought they could surely catch them.
They shouted aloud for joy.
But the animals turned and ran up the slope.
They jumped over rocks and chasms with ease.
They were soon out of sight.
How disappointed the hunters were!
They did not know what these strange animals were.
They did not know from what place they had come.
They wondered why they had come to their land.
Perhaps you would like to know.
They were musk sheep that had come from the cold, cold north.
They were used to treeless, desolate places.
They were used to eating moss and young shoots of the willow.
They looked something like sheep and something like oxen.
Sometimes they are called musk oxen.
They looked something like the bison.
Sometimes they are called musk bison.
Does it seem strange that the musk sheep should leave their cold home
and come to the land where the Tree-dwellers had lived?
It was not so strange as it seemed.
Many years had passed since the Tree-dwellers lived.
It was no longer warm on the wooded hills.
There was snow on the ground the greater part of the year.
After many years it became very cold.
Then all the animals came down from the north.
The coming of the musk sheep was the sign of the coming cold.

THINGS TO DO

_Bend your arms to show how the musk sheep's horns curve._
_How do you think the musk sheep used its horns?_
_Model a musk sheep in clay._

XXXII.

THINGS TO THINK ABOUT

What animals stay here in the winter?
How do they keep warm?
How do they find food?

_The Woolly Rhinoceros_

About the same time that the musk sheep came from the north, another
strange animal appeared.
It was a huge creature.
Not one like it has lived for ages.
It was a woolly rhinoceros.
The big-nosed rhinoceros liked to live where it was warm.
It lived on the wooded hills before the Tree-dwellers did.
The small-nosed rhinoceros liked the warm country, too.
It came from the south when the Tree-dwellers appeared.
But the woolly rhinoceros came down from the north.
It was able to live in the cold.
It had an inner coat of fine curly wool.
This coat kept it warm.
It had a coarse, hairy outer coat.
This coat kept it f