The venturesome but more or less diplomatic Bark had, by this time, emerged from the wood and was apprehensively edging up toward the place where Ab was standing. The older brother saw him and called to him to come and try the thing again and the youngster knew that he was safe. Then the two toyed with the plaything for an hour or two and Ab became more and more interested in its qualities. He had no definite idea as to its possibilities. He thought only of it as a curious thing which should be larger. The next day Ab hacked from a low-limbed tree a branch as thick as his finger and about a yard in length, and, first trimming it, bent it as Bark had bent the twig and tied a strong sinew cord across. It was a not discreditable bow, considering the fact that it was the first ever made, though one end was smaller than the other and it was rough of outline. Then Ab cut a straight willow twig, as long nearly as the bow, and began repeating the experiments of the day before. Never was man more astonished than this youth after he had drawn the twig back nearly to its head and let it go! So drawn by a strong arm, the shaft when released flew faster and farther than the maker of what he thought of chiefly as a thing of sport had imagined could be possible. He had long to search for the headless arrow and when he found it he went away to where were bare open stretches, that he might see always where it fell. Once as he sent it from the string it struck fairly against an oak and, pointless as it was, forced itself deeply into the hard brown bark and hung there quivering. Then came to the youth a flash of thought which had its effect upon the ages: "What if there had been a point to the flying thing and it had struck a reindeer or any of the hunted animals?" He pulled the shaft from the tree and stood there pondering for a moment or two, then suddenly started running toward the cave. He must see Old Mok! The old man was at work and alone and the young man told him, somewhat excitedly, why he had thus come running to him. The elder listened with some patience but with a commiserating grin upon his face. He had heard young men tell of great ideas before, of a new and better way of digging pits, or of fishing, or making deadfalls for wild beasts. But he listened and yielded finally to Ab's earnest demand that he should hobble out into the open and see with his own eyes how the strung bow would send the shaft. They went together to an open space, and again and again Ab showed to his old friend what the new thing would do. With the second shot there came a new light into the eyes of the veteran hunter and he bade Ab run to the cave and bring back with him his favorite spear. The young man was back as soon as strong legs could bring him, and when he burst into the open he found Mok standing a long spear's cast from the greatest of the trees which stood about the opening. "Throw your spear at the tree," said Mok. "Throw strongly as you can."