But instantly it was up again and at him. Screaming with rage and frothing at the mouth it stuck wildly with its heavy claws, but Tanar had learned certain things from David Innes that men of the stone age ordinarily do not know, for David had taught him, as he had taught many another young Pellucidarian, the art of self-defense, including boxing, wrestling and jiu-jitsu, and now again they came into good stead as they had upon other occasions since he had mastered them and once more he gave thanks for the fortunate circumstance that had brought David Innes from the outer crust to Pellucidar to direct the destinies of its human race as first emperor. Combined with his knowledge, training and agility was Tanar’s great strength, without which these other accomplishments would have been of far lesser value, and so as the creature struck, Tanar parried the blows, fending the wicked talons from his flesh and with a strength that surprised his antagonist since it was fully as great as his own. But what was still more surprising to the monster was the frequency with which Tanar was able to step in and deliver telling blows to the body and head that, in its awkwardness and lack of skill, it was unable to properly protect. To one side, watching the battle for which she was the stake, stood Stellara. She might have run away and hidden; she might have made good her escape, but no such thoughts entered her courageous little head. It would have been as impossible for her to desert her champion in the hour of his need as it would have been for him to leave her to her fate and so she stood there, helpless, awaiting the outcome. To and fro across the clearing the battlers moved, trampling down the lush vegetation that sometimes grew so thickly as to hamper their movements, and now it became apparent to both Stellara and Tanar from the labored breathing of the creature that it was being steadily worn down and that it lacked the endurance of the Sarian. However, probably sensing something of this itself, it now redoubled its efforts and the ferocity of its attack, and, at the same time, Tanar discovered a vulnerable spot at which to aim his blows. Striking for the face he had accidentally touched one of the bulging protuberances that lay beneath the skin where the eyes should have been. At the impact of the blow, light as it was, the creature screamed and leaped backward, instinctively raising one of its claws to the injured organ and thereafter Tanar directed all his efforts toward placing further and heavier blows upon those two bulging spots. He struck again and landed cleanly a heavy blow upon one of them. With a shriek of pain the creature stepped back and clamped both paws to its hurt.