He carelessly wound it once around the spindle, keeping hold of one end of the strap. Then Sharpeyes picked up the other end of the strap, and Strongarm jerked the end that he held. [Illustration: _A strap drill weighted with stones_] They did this a few minutes just in play, but at last they began to do it in earnest. Strongarm placed the end of the spindle in the shallow hole that he had made in the sabre tooth. Then he and Sharpeyes began to twirl the spindle with the strap. But there was nothing to keep the spindle from falling. So they tried to hold it with a piece of wood. They made a shallow hole in the wood to fit the top of the spindle. Then while Strongarm and Sharpeyes pulled the strap, a boy held the spindle in place. Soon the spindle was working steadily, and the hole was becoming deeper and deeper. When they had bored a hole halfway through the tooth, they began to bore from the opposite side. All the Cave-men came up to see them work. As soon as the hole was made, Strongarm took a cord of braided sinew and hung the sabre tooth at his side. [Illustration: _A bow drill_] After that he always wore the trophy. Sometimes he used it for a knife and sometimes for a saw. Every one who saw this rare trophy knew that Strongarm was a brave man. THINGS TO DO _Make a collection of things that you can use for awls._ _Find something that will do for the spindle of a drill._ _Show how to drill a hole by twirling the spindle or awl on the thigh._ _Show how one person can twirl an upright spindle._ _Show how two persons can twirl an upright spindle with their hands._ _Show how they can do it with a strap. Can you think why stones are sometimes bound to the shaft of a drill?_ _Look at the picture of the bow drill and see if you can make one._ _Draw a picture of the Cave-men working upon their trophies._ IX THINGS TO THINK ABOUT Think of as many tools and weapons as you can that the Cave-men found ready to use. What could they find to make into tools and weapons? Why did they not use large boards and metals? Why did they put handles on their tools and weapons? Think of as many ways as you can of fastening handles to tools and weapons. _Making New Weapons_ The Cave-men liked their new home. They were able to work better when they were warm than when they were shivering with the cold. They found more time to improve their tools and weapons. One day they began to make weapons of the bones they found in the cave. [Illustration: “_They made them into weapons_”] Many of the bones were good for clubs. Others were good for handles of weapons. After the Cave-men had sorted out the bones that they wanted, they went to hunt stones along the margin of the stream. They wanted stones that were good for hammers. So they hunted for smooth, round stones that were hard to break.