The Sun looked down at the creature Mother Nature had pointed out to him, and saw a queer little animal, covered with hair, and looking somethink like a very small monkey. This animal liked the fruits and nuts of the trees, and spent most of his time in the tree-tops, but sometimes he would go down to the ground, and run about through the thick jungle forests on all four feet, like a squirrel. But when he wanted food, or when some of the fierce flesh-eating animals attacked him, he would quickly climb up into a tall tree. The trees in those early forests grew very close together, and the little monkey animals found that they could swing from limb to limb with their arms, and thus travel for miles, from one tree to another, without going down to the ground at all. When they first took to living in the trees they had smooth skins like their parents the reptiles, but as thousands of years passed, hair grew out all over them, to protect them and keep them warm during the chilly rains. For a long time the Sun watched these creatures, while Mother Nature was away, and he saw them slowly change. For one thing they grew larger and stronger all the time, and came to look more and more like the monkeys and apes we find in the jungle country even to-day. But still they were not apes, but from them, both the apes and Man, are descended. From their habit of swinging from limb to limb, or from strong vines, like a trapeze performer in a circus, these ape-like animals got more and more in the habit of standing upright, balancing themselves on their hind feet on one limb, while they held on with their fore feet to another limb higher up. But still whenever they went down to the ground they ran about on all fours. If these ape-like creatures had kept on living in the same sort of a place, where the food grew in high trees, and the forest beneath was filled with savage animals ready to eat them up, they would have kept right on being apes. Indeed, most of them have stayed that way, for we find their descendants living in the jungles of the tropics to-day, not very different from the way they were so many hundreds of thousands of years ago. But about that time Mother Nature stopped by to see how things on the Earth were getting along. "What are those creatures doing that I spoke to you about?" she asked the Sun. "Nothing, that I can see," the Sun replied, "except playing about in the tree tops, and eating nuts and fruit." "That won't do at all," said Mother Nature. "We must get them up into the hills, where things will be different. I see some splendid big valleys over there on the mountain side, where there aren't many wild beasts to eat them, and where the trees and bushes are low, and full of nuts and fruit. It is the very place for them." "How are you going to get them there?" asked the Sun.