As we ran out the limb, Broken-Tooth, facing us, would begin teetering. This naturally impeded our progress; but there was more in the teetering than that. He teetered with his back to the jump he was to make. Just as we nearly reached him he would let go. The teetering branch was like a spring-board. It threw him far out, backward, as he fell. And as he fell he turned around sidewise in the air so as to face the other branch into which he was falling. This branch bent far down under the impact, and sometimes there was an ominous crackling; but it never broke, and out of the leaves was always to be seen the face of Broken-Tooth grinning triumphantly up at us. I was “It” the last time Broken-Tooth tried this. He had gained the end of the branch and begun his teetering, and I was creeping out after him, when suddenly there came a low warning cry from Lop-Ear. I looked down and saw him in the main fork of the tree crouching close against the trunk. Instinctively I crouched down upon the thick limb. Broken-Tooth stopped teetering, but the branch would not stop, and his body continued bobbing up and down with the rustling leaves. I heard the crackle of a dry twig, and looking down saw my first Fire-Man. He was creeping stealthily along on the ground and peering up into the tree. At first I thought he was a wild animal, because he wore around his waist and over his shoulders a ragged piece of bearskin. And then I saw his hands and feet, and more clearly his features. He was very much like my kind, except that he was less hairy and that his feet were less like hands than ours. In fact, he and his people, as I was later to know, were far less hairy than we, though we, in turn, were equally less hairy than the Tree People. It came to me instantly, as I looked at him. This was the terror of the northeast, of which the mystery of smoke was a token. Yet I was puzzled. Certainly he was nothing of which to be afraid. Red-Eye or any of our strong men would have been more than a match for him. He was old, too, wizened with age, and the hair on his face was gray. Also, he limped badly with one leg. There was no doubt at all that we could out-run him and out-climb him. He could never catch us, that was certain. But he carried something in his hand that I had never seen before. It was a bow and arrow. But at that time a bow and arrow had no meaning for me. How was I to know that death lurked in that bent piece of wood? But Lop-Ear knew. He had evidently seen the Fire People before and knew something of their ways. The Fire-Man peered up at him and circled around the tree. And around the main trunk above the fork Lop-Ear circled too, keeping always the trunk between himself and the Fire-Man. The latter abruptly reversed his circling. Lop-Ear, caught unawares, also hastily reversed, but did not win the protection of the trunk until after the Fire-Man had twanged the bow.