Yes, some people did that in England a few years ago. They took the fastest racehorse in the country, and ran a race between him and the fastest greyhound; and the greyhound beat the horse in the race. Then they took that greyhound, and ran a race between him and an English deer; and the deer beat the greyhound in the race. So, you see, the deer was faster than the greyhound, and the greyhound was faster than the horse! So the deer was the fastest of the three. And the deer that lives in the jungle is even faster than the English deer. Why? Because the English deer lives in peaceful glades and forests, and has no other animal trying to catch and eat him; so he does not try to be as fast as he could be. But the deer that lives in the jungle has to try very hard all the time to be as fast as he can be, or else he would be eaten by the tiger! And, as you must know, _we can do the best in anything when we try the hardest_. So, all kinds of wild deer in the jungle have been trying their hardest to run as fast as they can. And as their fathers and grandfathers have been trying to do that, the wild deer to-day have become the fastest runners among all the animals I have told you about. CHAPTER XI The Camel The _camel_ has very little to do with the kind of jungle I have been telling you about; but he has much to do with the _desert_. A desert is another kind of wild place. As I told you before, jungle means any wild place; but usually, of course, there are lots of trees and bushes and thickets in it. But we call the wild place a desert when trees and bushes and thickets will not grow there, because the ground is all covered with _sand_. In the desert there is nothing but sand all over the ground, and not a single tree or a tiny blade of grass anywhere, as far as you can see. And that is the place where camels can do some very wonderful things, as I shall now tell you. The camels do not actually live in the desert all the time, but in countries quite near there. First I must tell you that there is only one country to-day, called Central Asia, where camels are still found wild. In all other places they are not wild any more, for in those countries people have lived for many thousand years; so the people caught all the camels once upon a time, and tamed them. Since that time the camels have been used by people in those countries for their work, just as we use horses here; and rich people in those countries count their wealth by the number of camels they have. Just as we say here that a rich man has a million dollars, or two millions, or three millions, so in those countries a man is thought to be rich who has one thousand camels, or two thousand, or three thousand. It was just the same in those countries in olden times. You have read in your Bible history that Job was once a rich man, as he owned thousands of camels.