There was a rush of the passengers to Stafford's side and there were showering thanks and congratulations and all the exclamatory comment which would naturally follow a scene so startling and with such a termination, but one man swept the others aside, with suddenly acquired authority, and demanded an examination of Stafford's hurt. It was the physician of the group, and the wisdom of his action was recognized at once. It was found that the dog's teeth had entered the fore-arm deeply, but the marks were clean and the blood was flowing readily. "It would be nothing serious," commented the doctor, "if it were not for the chance of hydrophobia. Do you think the dog was mad?" he asked of Stafford. And, even as he spoke, something happened, something which, as before, was so unexpected, so alarming, so utterly beyond all ordinary chance, as to rob the men there of the moment's reason. There was a snarl like that of a tiger at their very feet and the dog's neck upreared among them fiercely. He had not been strangled utterly unto death, and had revived to breath and life again. His strength seemed to return to him instantaneously. With a growl which was almost a roar, the beast surged into the aisle, his glaring eyes unseeing at first but, as perception came to them, discerning again but a single object. Their devouring intent was upon a figure just entering the other doorway. The animal's sighted quarry was the effervescent youth who had first made himself generally known on the train because of his air of optimism. He had instant opportunity for an exhibition of all his blithesome qualities.