However, it was never known exactly whether or not Finn would have succeeded in his task of breaking this old-man's neck; for, with a suddenness which surprised the Wolfhound into suffering momentary contact with Bill's arm, the boundary-rider slipped into the fight, having first picked up the old-man's tail so that he could not kick (a kangaroo knows that if he attempts a kick while his very serviceable tail is being held up he always topples over on his side, and is thus made helpless), and then leaned across Finn from behind, and slit the marsupial's throat with his sheath-knife. Finn growled fiercely as he felt the weight of the man's arm pressed across his shoulders, and sprang clear at the same moment that the kangaroo toppled over dead, Bill's practised hand having severed its jugular vein. And so the fight ended, without a scratch for Finn; which, seeing that this was his first kangaroo, and an old-man, and that many an old-man has stretched as many as four and five hounds bleeding on the ground before him in less than as many minutes, must be regarded as a piece of exceptionally good fortune for the Wolfhound. With Jess, now, matters were far otherwise; the black hound could do no more hunting for some time to come. Finn was already sympathetically licking Jess when Bill turned away from the dead kangaroo; but, as the man came forward, Finn retreated, his lips lifted slightly, and his hackles rising. He was not quite sure of Bill's intentions, and had been greatly disturbed by the pressure of the boundary-rider's arm across his shoulders. It had brought with it an instant flashlight picture of an iron-barred cage, and other matters connected therewith. He did not realize that Bill, and not he himself, had killed the old-man. However, Bill was not paying any particular heed to Finn just now, though he had greatly admired the Wolfhound's handling of the kangaroo, as showing more strength than any other hound's attack that he had ever seen. With a single blow the kangaroo had practically laid open the whole of one side of Jess's body. The gash his terrible foot had made extended from the front of the breast down to the inside of the flank; and it was far from being simply a skin wound. Down the chest it had reached the bone; in the belly it had carved a furrow which suggested the wound of an axe. Bill sighed as he told himself that poor Jess's chances were problematical. An Englishman in Bill's position would almost certainly have put a bullet through the black hound's heart or head, if he had had a gun. But Bill had done a good deal of kangaroo hunting in his time, and had seen many and many a hound ripped open, and even then preserved to hunt again.