Suddenly--unexpectedly--he had come upon man! This was the creature that had hunted him, this was the creature that had hurt him--and it was so near that he could reach out with his paw and crush it! And how weak, and white, and shrinking it looked now! Where was its strange thunder? Where was its burning lightning? Why did it make no sound? Even a dog would have done more than this creature, for the dog would have shown its fangs; it would have snarled, it would have fought. But this thing that was man did nothing. And a great, slow doubt swept through Thor's massive head. Was it really this shrinking, harmless, terrified thing that had hurt him? He smelled the man-smell. It was thick. And yet this time there came with it no hurt. And then, slowly again, Thor came down to all fours. Steadily he looked at the man. Had Langdon moved then he would have died. But Thor was not, like man, a murderer. For another half-minute he waited for a hurt, for some sign of menace. Neither came, and he was puzzled. His nose swept the ground, and Langdon saw the dust rise where the grizzly's hot breath stirred it. And after that, for another long and terrible thirty seconds, the bear and the man looked at each other. Then very slowly--and doubtfully--Thor half turned. He growled. His lips drew partly back. Yet he saw no reason to fight, for that shrinking, white-faced pigmy crouching on the rock made no movement to offer him battle. He saw that he could not go on, for the ledge was blocked by the mountain wall. Had there been a trail the story might have been different for Langdon. As it was, Thor disappeared slowly in the direction from which he had come, his great head hung low, his long claws click, click, clicking like ivory castanets as he went. Not until then did it seem to Langdon that he breathed again, and that his heart resumed its beating. He gave a great sobbing gasp. He rose to his feet, and his legs seemed weak. He waited--one minute, two, three; and then he stole cautiously to the twist in the ledge around which Thor had gone. The rocks were clear, and he began to retrace his own steps toward the meadowy break, watching and listening, and still clutching the broken parts of his rifle. When he came to the edge of the plain he dropped down behind a huge boulder. Three hundred yards away Thor was ambling slowly over the crest of the dip toward the eastward valley. Not until the bear reappeared on the farther ridge of the hollow, and then vanished again, did Langdon follow. When he reached the slope on which he had hobbled his horse Thor was no longer in sight. The horse was where he had left it. Not until he was in the saddle did Langdon feel that he was completely safe. Then he laughed, a nervous, broken, joyous sort of laugh, and as he scanned the valley he filled his pipe with fresh tobacco.