SPARK II. HOW THE STAR AGAIN BEGAN TO TRAVEL. It certainly seemed to both Umpl and Sptz that the iron mass which was once a falling star had brought good luck to them. Fire in itself was a grand thing. It was so good not to lie cold o' nights, or to be obliged to fill up the doorway with stones and pull them down in the morning. Many and many a time they went to the spot where the large piece lay and looked at it with half-frightened eyes. They could not understand it. Where did it come from? Why did it come there? When would it go away? Did a spirit throw it, or was it itself a spirit? All these and many other odd thoughts came to them because of it; and this was one of the very best things that ever happened to either. No other Cave boy or girl in the whole valley ever took the trouble to think about anything that was not connected with dinner, or the latest style of wearing burrs in their hair; and when Umpl thought so long about it that he feared it must be a spirit, and laid his best arrowhead on it as an offering, while Sptz for the same reason brought a queer bit of bone with a feather in one end and a scrap of rabbit fur around it, the thoughts were good for them. It did for their small brains just what a boy does for his arm when he swings a club or a dumb-bell. It made them stronger, so that they could use them for other things and use them better. Umpl, for one thing, looked upward among the trees oftener. He saw more birds, he learned their actions better and so knew better how to have roast bird for supper. So perhaps they were right about the good luck. Besides, both of them were growing up. Sptz had learned to make acorn bread and found a hollow on the top of the Iron Star which was just the thing to grind up nuts in. Umpl was two feet taller than when the star fell, and could draw a bow and send an arrow right through a stag. And one great day he met a Cave Bear and sent his flint-headed shaft whistling with such force that it broke through the hard skull of the savage beast and dropped him in his tracks. All his life long Umpl wore on his arm an ornament made out of the longest teeth and sharpest claws of that bear; and boys and girls looked at it and wondered if they would ever have the right to be so honored. Umpl had become a man. But he was a very young one still.