His head whirled. With those ears flattened, with that long, lean neck, it was like the head of a striking snake. Her sleeve was rolled up to the elbow, and over the bare skin the teeth of the wolf-dog were set. The snarl had grown so deep and hideous that the tremor of it fairly shook her, and she saw that the jaws of the beast slavered with hunger. She knew--a thousand things about Black Bart, and among the rest that he had tasted human blood. And there is a legend which says that once a wild beast has tasted the blood of man he will taste it a second time before he dies. She thought of that--she dared not turn her head lest she should encounter the hellfire of Bart's eyes. Yet she had passed all ordinary fear. She had reached that exquisite frenzy of terror when it becomes one with courage. The very arm over which the wolf's teeth were set moved--raised--and with both hands she untied the knot of the bandage. The snarling rose to a pitch of maniacal rage; the teeth compressed--if they broke the skin it was the end; the first taste of blood would be enough!--and drew away her arm. If she had started then, all the devil in the creature would be loosed, for her terror taught her that. And by some mysterious power that entered her at that moment she was able to turn her head, slowly, and look deep into those terrible eyes. Her arm was released. But Black Bart crouched and the snakelike head lowered; he was quivering throughout that steel-muscled body to throw himself at her throat. The finger was on the hair-trigger; it needed a pressure not greater than a bodiless thought. And still she looked into the eyes of the wolf-dog; and her terror had made her strangely light of body and dizzy of mind. Then the change came, suddenly. The yellow-green changed, swirled in the eyes of Black Bart; the eyes themselves wavered, and at last looked away; the snarl dropped to a sullen growl. And Black Bart lay down as he had been before. His head was still turned towards her, to be sure. And the teeth were still bared, as with rapid, deft fingers she undid the bandage; and from instant to instant, as the bandage in spite of her care pressed against the wound, the beast shivered and wicked glances flashed up at her face. The safe-blower who finds his "soup" cooling and dares not set it down felt as Kate Cumberland felt then. She never knew what kept her hands steady, but steady they were. The cloth was removed, and now she could see the red, angry wound, with the hair shaven away to a little distance on every side. She dipped her cloth into the antiseptic; it stung her fingers! She touched the cloth lightly against the wound; and to her astonishment the wolf-dog relaxed every muscle and let his head fall to the ground; also the growl died into a soft whine, and this in turn ended.