Each of the creatures in the tree was unarmed. Ab still bore the quiver full of admirable arrows, and across the breast of Lightfoot still hung the strong bow which she had slung about her in such blithesome mood. Soon began an exceedingly earnest conversation. Ab, eager to reach again the fair creature who now belonged to him, was half frantic with rage, and Lightfoot was far from her usual mood of careless gaiety. The two talked and considered, though but to little purpose, and, finally, after weary hours, the night came on. It was a trying situation. Man and woman were in equal danger. The bears were hungry--and the cave bear knew his quarry. The beasts beneath were not disposed to leave the prey they had imprisoned aloft. The night grew, but either Ab or Lightfoot, looking down, could see the glare of small, hungry eyes. There was gentle talk between the two, for this was a great strait and, in straits, souls, be they prehistoric, historic or of to-day, always come closer together. Very much more loving lovers, even, than they were before, became the two perched aloft that night. It was a comfort for the wedded pair to call to each other through the darkness. After a time, however, muscles grew lax with the continued strain. Weariness clouded the spirits of the couple and almost overcame them and only the thing which has always, in great stress, given the greatest strength in this world--the love of male and female--sustained them. They stood the test pretty well. To sleep in a tree top was an easy thing for them, with the precautions, simple and natural, of the time. Each plaited a withe of twigs with which to be tied to the tree or limb, and resting in the hollow nest where some great limb joined the bole, slept as sleep tired children, until the awakening of nature awoke these who were nature's own. When Ab awoke, he had more on his mind than Lightfoot, for he was the one who must care for the two. He blinked and wondered where he was. Then he remembered all, suddenly. He looked across anxiously at a slender brown thing lying asleep, coiled so close to the bole of the tree to which she was bound that she seemed almost a part of it. Then he looked down, and, after what he saw, thought very seriously. The bears were there! He looked up at the bright sky and all about him, and inhaled all the fragrance of the forest, and felt strong, and that he knew what he should do. He called aloud.