Delighted with this new feeling of security from danger in the night, the man and woman sat long before the cheerful blaze and enjoyed its grateful warmth. They agreed that wild animals were afraid of this new agent, and if they could always have its protection they would have nothing to fear from them; but to their weak intellects no thought of an attempt to perpetuate the fire was suggested. When their fuel was exhausted and nothing but a bed of glowing coals remained, they retired to the cave, carefully closing the entrance against the possible return of the tiger or the attack of some other animal, for they realized that the fire, being now nearly out, they could no longer depend upon it for protection. Late in the morning Longhead and Broken Tooth emerged from the cave. The fire was out and the ashes cold. When they thought of the pleasurable warmth it had produced and the protection it had afforded they indulged in some expressions of regret that it was gone, and then thought no more about it. They soon made their way to the place of the smouldering log, but it was now nearly consumed. Directly the woman noticed two or three tiny threads of smoke, and on investigation they found that some dry excrescences, which we call "punk," had fallen away from the burning log and that on one side of each was a small spark. Broken Tooth took up one of these and, noting the white ash so like the down on certain plants which she had often blown away in sport, she blew upon it as she held it in her hand, and was delighted to see the spark spread and glow afresh. Longhead, too, picked up a piece of the lighted punk and, after blowing upon it for a few minutes, dropped it carelessly at his feet, where it fell upon some dry rotten wood and leaves. Without noticing this, he watched the amusement of his companion as she made the sparks fly from the piece she held, and then, suddenly, with a yell of pain, he jumped aside and hopped about on one foot, holding the other in his hand. The rotten wood and leaves upon which he had dropped the punk had ignited and the fire had reached his foot. He now understood the defeat of the tiger the morning before, and had ocular and painful demonstration of the fact that punk will retain fire, at least for a few hours. [Illustration: "AFTER SOME VIGOROUS BLOWING, PRODUCED FLAME."] Longhead now seemed to wake up; at last he had an idea, and he talked it over with the woman as they slowly returned to the cave platform, each carrying a piece of the lighted punk. Once there, the man sought for dry, rotten wood and small twigs, which they piled upon the punk and, after some vigorous blowing, produced flame.