Now and then, a watchful dog barked at them, but they soon left him and his bark behind.
Harry noticed that Billy's figure was beginning to waver slightly, and he knew that weariness and the lack of sleep were at last gaining the mastery over his daring young spirit.

It gave him relief, as it solved a problem that had been worrying him.

He rode up by the side of Billy, but he said nothing.

The boy's eyelids were heavy and the youthful figure was wavering, but it was in no danger of falling.

Billy could have ridden his horse sound asleep.
Harry presently saw the roof of Mrs.Pomeroy's house showing among the trees.
"It's less than half a mile to your house, Billy," he said.
"But I'm not going to stop there.