That threatened to be the longest night in all his experience, for he knew that he dared not go to sleep, even for a minute, lest those daring beast of prey jump upon him; and once at close quarters, where the repeating rifle did not count for more than a cudgel, get the better of him. Sometimes it was almost impossible for the boy to keep his eyes open, despite the fact that he was fully aware of the serious consequences, that would follow, should he forget himself. He fought fully fifty battles while night held sway; and often victory was gained only by a close margin; for more than once he had nodded until his head fell forward, and this served to arouse him again. He had matches with him, and once in a long time used one so that he might have the consolation of learning the time of night. It seemed to Billie that his little nickel watch must have stopped, though he had surely wound it up, and so far as he knew it was not subject to tricks of any kind. But those minutes did drag most terribly, and when four o’clock arrived he began to look toward the east most expectantly, though he knew full well that he could not possibly discover the first gleams of coming day for at least an hour and a half. All was well, however, and that gave the boy considerable solid satisfaction. He experienced the pleasure that always accompanies a task rightly done; and even fancied that Donald and Adrian must find reasons for congratulating him, when they heard how he had kept guard all through that dreadful night. He could hear the wolves moving around every little while, but as a rule they had learned their lesson well, and kept at a certain distance away. Then again it was of course possible that, not being so ferociously hungry as they had been in the beginning, they were no longer ready to take desperate chances. Twice Billie had discovered a pair of glowing eyes shining in the darkness like twin stars; and thinking that he might as well do what execution was possible, while the chance remained, he had on both occasions carefully aimed his gun, and then fired. And as he gleefully told himself on each occasion, from the clamor that ensued he felt pretty positive that he had hit something. The other wolves did the rest; because that was what they were on the spot for, to secure a meal. But now it was almost time when he felt he must detect those welcome signs in the east that would tell of coming day. Billie rejoiced to know that he had really come through that terrible night in such decent condition. He was not a particle sleepy now, for all that had worn off, and he felt that he could hold his own. All the same, he continued to look anxiously toward that promising quarter of the horizon where he must soon discover the first gray streaks of morning. CHAPTER XIII. THE PANGS OF STARVATION.