The fact is, it is part of a wig-wag code, which is doubly interesting now that all our boys are learning wig-wagging with a white flag. We think that our army people invented this method; but Woodcraft men know better. First, notice that any Dog that has any white on his body has at least a little white on the end of his tail. This is well known; and the reason is that the wild ancestor had a white brush on the end of his tail; a white flag, indeed; and this was the flag of his signal code. Suppose, then, that a wild Dog, prowling through the woods, sights some other animal. Instantly he crouches; for it is good woodcraft to avoid being seen and then watch from your hiding-place. As the stranger comes near, the crouching Dog sees that it is one of his own kind, and that it is needless to hide any longer; indeed, that it is impossible to remain hidden. So the moment the stranger stops and looks at the crouching Dog, the latter stands straight up on all fours, raises his tail up high, and wags the white tip from side to side in the sign which means, "Let's be friends." Every Dog knows the sign, every Dog in every town does it yet; every boy has seen it a thousand times. We flatter ourselves that we invented the wig-wag code with our little white flag. Maybe so; but the Dog had it long before we did. TALE 68 Why the Dog Turns Around Three Times Before Lying Down Yes, they all do it; the big St. Bernard, the foolish littlest lap Dog, the ragged street Dog; give them bare boards, or a silken cushion, or snow, three turns around and down they go. Why? Not so hard to answer as some simple questions. Long, long ago, the wild great-great-grandfather of the Dog--a yellow creature with black hair sprinkled on his back, sharp ears, light spots over his eyes, and a white tail-tip--used to live in the woods, or on the prairies. He did not have a home to which he might return every time he wanted to rest or sleep; so he camped wherever he found himself, on the plains, in a thicket, or even in some hole in a rock; and he carried his bedclothes on his back. But he always found it worth while to add a little comfort by smoothing the grass, the leaves, the twigs, or the pebbles before lying down; and the simplest way to do this was by curling up, and turning round three times, with the body brushing the high grass or pebbles into a comfortable shape for a bed. Yes, and they all do it to-day just the same, big and little, which is only one of the many proofs that they are descended from the same wild-wood great-grandfather, and still remember his habits. TALE 69 The Deathcup of Diablo [Illustration: The Deathcup Toadstool]