He was engrossed so deeply that he did not hear a heavy step behind him, nor did he see a huge bewhiskered figure in the path, holding a clubbed rifle. Yet he turned. It was perhaps the instinct inherited from his great ancestor, who was said to have had a sixth sense. Whatever it may have been, he faced suddenly about, and saw Bill Skelly aiming at him a blow with the clubbed rifle, which would at once crush his skull and send his body into the deep stream. The same inherited instinct made him leap within the swing of the rifle and clutch at the mountaineer's throat. The heavy butt swished through the air, and the very force of the blow jerked the weapon from Skelly's hands. The next instant he was struggling for his life. Harry was a powerful youth, much stronger than many men, and, at that instant, the spirit and strength of his great ancestor were pouring into his veins. The treacherous attempt upon his life filled him with rage. He was, in very truth, the forest runner of the earlier century, and he strove with all his great might to slay his enemy. Skelly, six feet two inches tall and two hundred pounds of muscle and sinew, struck the boy fiercely on the side of the head, but the terrible grasp was still at his throat. He was the larger and the stronger, but the sudden leap upon him gave his younger and smaller antagonist an advantage. He had a pistol in his belt, but with that throttling grip upon his throat he forgot it. The hunter had suddenly become the hunted. Filled with rage and venom he had expected an easy triumph, and, instead, he was now fighting for his life. Skelly struck again and again at the boy, but Harry, with instinctive wisdom, pressed his head close to the man's chin, and Skelly's blows at such short range lacked force behind them. All the while Harry's youthful but powerful arms were pouring strength into the hands that grasped the man's throat. The mountaineer choked and gasped, and, changing his aim from the head, struck Harry again and again in the chest. Then he remembered to draw his pistol, but Harry, raising his knee, struck him violently on the wrist. The pistol dropped to the ground, and Skelly, in the fierce struggle, was unable to regain it. Neither had uttered a cry. There was not a single shout for help. Skelly would not want to call attention, and Harry recalled afterward that in the tremendous tension of the moment the thought of it never occurred to him. He continued to press savagely upon Skelly's throat, while the mountaineer rained blows upon his chest, blows that would have killed him had Skelly been able to get full purchase for his arms. He heard the heavy gasping breath of the man, and he saw the dark, hideous face close to his own. It was so hairy that it was like the face of some huge anthropoid, with the lips wrinkled back from strong and cruel white teeth.