It was the same kind of blue sky he had looked at from his tree-house in the jungle, now so far away, and Mappo did not feel so lonesome, or homesick, when he watched the white clouds sail over the little patch of blue sky.

For you know animals do get homesick just as do boys and girls.  Often, in circuses and menageries, the animals become so homesick, and long so for the land from which they have been taken, that they become ill and die.  When a keeper sees one of his pet animals getting homesick, he tries to cure him.

He may put the homesick animal into another cage, or give him different things to eat—­things he had in his own country.  Or the keeper may put the homesick animal in with some different and new beasts, so the homesick one may have something new to think about.  Monkeys very often become homesick, but so do elephants, tigers and lions.  It is a sad thing to be homesick, even for animals.

But Mappo was not very homesick.  In the first place he was not a very old monkey, and he had not lived in the jungle very long, though he had been there all his life.  Then, too, he was anxious to have some adventures.

So, though when he looked at the bit of blue sky, and thought of his home in the deep, green woods, he had a wish, only for a moment, to go back there.  He had enough to eat on the ship, plenty of cool water to drink, and he knew he was in no danger from the tiger or other wild beasts bigger than himself.  For the tiger was fastened up in a big strong cage, and could not get out.

Mappo, on board the ship, chattered and talked with the other monkeys in cages all around him.  He asked how they had been caught, and they told him it was in the same way as he had been—­by picking up good things to eat on the ground, and so being tangled up in a net.

“And I don’t know what is going to happen to me now,” said a little girl monkey, with a very sad face.

“Oh, cheer up!” cried Mappo, in his most jolly voice.  “I am sure something nice will happen to all of us.  See, we are having a nice ride in the water-house, and we have all we want to eat, without having to hunt for it in the woods.”

“Yes, but I want my papa and mamma!” cried the little girl monkey.

Mappo tried to make her feel happier, but it was hard work.  As for Mappo, himself, he was feeling pretty jolly, but then he was always a merry monkey.

As the ship sailed on, over the ocean, it left behind the warm, jungle country where Mappo had always lived.  The weather grew more cool, and though Polar Bears like cold weather, and are happy when they have a cake of ice to sit on, monkeys do not.  Monkeys must be kept very warm, or they catch cold, just as boys and girls do.

So, as the ship sailed farther and farther north, on its way to a new country, Mappo felt the change.  Though he was covered with thick hair, or fur, he could not help shivering, especially at night when the sun had gone down.