Old Mother Nature nodded. “There are some others very like White-tailed Jack, only not quite as big,” said she. “They have just such long hind legs, and just such great ears, but their coats are different, and they live on the great plains farther south. Some of them live so far south that it is warm all the year round. One of these latter is Antelope Jack, whose home is in the Southwest.” “Tell us about him,” begged Peter. “To begin with,” replied Old Mother Nature, “he is a member of the big Jack Rabbit or Jack Hare branch of your family. None of this branch should be called a Rabbit. All the members are first cousins to Jumper and are true Hares. All have big ears, long, rather thin necks, and long legs. Even their front legs are comparatively long. Antelope Jack is probably next in size to White-tailed Jack. Strange to say, although he lives where it is warm for most of the year, his coat is very largely white. His back is a yellowish-brown and so is his throat. But his sides are white. The surprising thing about him is that he has the power of making himself seem almost wholly white. He can make the white hair spread out at will by means of some special little muscles which I have given him, so that the white of his sides at times almost seems to meet on his back. When he does this in the sun it makes flashes of white which can be seen a long way. By means of this Antelope Jack and his friends can keep track of each other when they are a long distance apart. There is only one other animal who can flash signals in this way, and that is the Antelope of whom I will tell you some other time. It is because Jack flashes signals in this way that he is called Antelope Jack. In his habits he is otherwise much like the other members of his family. He trusts to his long legs and his wonderful powers of jumping to keep him out of danger. He is not as well known as his commoner cousin, plain Jack Rabbit. Everybody knows Jack Rabbit.” Peter shook his head. “I don't,” said he very meekly. “Then it is time you did,” replied Old Mother Nature. “If you had ever been in the Far West you would know him. Everybody out there knows him. He isn't quite as big as Antelope Jack but still he is a big fellow. He wears a brownish coat much like Jumper's, and the tips of his long ears are black. His tail is longer than Jumper's, and when he runs he carries it down.” “I don't carry mine down,” Peter piped up. Old Mother Nature laughed right out. “True enough, Peter, true enough,” said she. “You couldn't if you wanted to. It isn't long enough to carry any way but up. Jack has more of a tail than you have, just as he has longer legs. My, how he can run! He goes with great bounds and about every tenth bound he jumps very high. This is so that he can get a good look around to watch out for enemies.” “Who are his enemies?” asked Peter.