"Come on," he said, "let's ride back a little way. Something back here I want to show you."
"What is it?" asked Jack as they mounted and started back.
"Oh, nothing much, only the road jumped up and hit a fellow on the back of the head a few minutes ago and I want to see how he's getting along. There are two of them, but I don't think there's much fight left in either."
He explained what had happened, as they rode along, and as he finished, they came in sight of Bob's late antagonists. The older man was just staggering to his feet, and riding up to within about twenty feet, Bob said pleasantly:
"Came round all right, did he?"
He turned and let out such a string of oaths as the boys had never before heard. When he stopped for lack of breath, Bob said:
"If that's the way you feel about it, I guess the less said the better, and we'll bid you good night. Come on, Jack."
They turned and rode slowly away turning their heads just in time to see both men shaking their fists at them.
"Well, that chapter is ended," remarked Jack, as they rode off. "Wonder what the next one will be like. We've certainly had some excitement since we made those cells."
"That's so," agreed Bob, looking at his watch. "It's after three now, and we'd better make tracks for home. You know mother will begin to worry about four o'clock if we're not there."