At last she settled upon the lee of a large boulder, and began to give Gavin what remained of his milk. Boy Hugh thought this was his opportunity to make sure that they were well defended against their enemies. The moon was rising, and he remembered that Cleg Kelly had told him how lions and tigers always hunted by moonlight. That widely-read journal, "The Bully Boys of New York," was Cleg's authority for this statement. There was certainly an appalling silence on the face of the moorland. Boy Hugh could see, indeed, the rock behind which Vara and Gavin were. But he tried to forget it. He wanted the sensation of perfect loneliness. Then the devil entered into Boy Hugh, and he wanted to explore. The moon came out from behind a cloud, and everything became bleached and flat, melting away into vague immensities and nerve-shaking mysteries which vanished as you approached. Of course that was not the way Boy Hugh put it to himself. It only made him want to run away. But suddenly a vague fear struck him to the heart, and he started to run back (as he thought) towards Vara and Gavin. He imagined that he could hear the sound of some animal trampling about the moss in search of wandering little boys. And it occurred to him that he had no means of defence except the whip, and even that served him not so well now, for the lash was broken. So this was the reason why Boy Hugh ran away. Though, indeed, his progress could hardly be called running. For at every few steps he tripped in some intricate twist of heather, tough as wire, and, falling forward, he instinctively bent his body into a half-hoop, like a young hedgehog. Thus he rolled down the brae, often coming upon his feet at the bottom and continuing his flight with energy unabated and without pausing a single moment even to ascertain damages. And so soon as she missed him Vara stood up, with Gavin in her arms, and cried, "Come back, Boy Hugh!" But Boy Hugh continued his wild flight, driven by the unreasoning terror of the vast and uncomprehended which had seized him suddenly and without warning. At last Boy Hugh paused, not so much because he wished it as because he had fallen into a moss-hole up to the neck, and so could run no further. He sustained himself by grasping a bush of blaeberry plants, and he dug his toes into the soft black peat.