In the end it was set down as something of a mystery which might not be cleared up until the return of the travelers. They knew that Hiram was a very secretive sort of fellow, and that even if he accomplished something calculated to fetch him in money, he would not tell of it until he chose.

The train drew in at the station, and the three scouts got aboard amidst a perfect clamor of shouts, above which could be heard the well-known scout salute. As the conductor gave the signal for them to pull out there was a scene such as had seldom been witnessed at Hampton; which proved just how much Rob Blake, the leader of the scouts, was appreciated in his home town.

Hardly had they left the outskirts of the town behind when Hiram, who was sitting just behind Rob and Andy, leaned forward and said in a low tone:

“I’m not dead sure about it, Rob, but there was a man got aboard this train that looked a whole lot like that tricky agent I told you about, Marsters!”

CHAPTER VI.
A FALSE ALARM.

“Andy, would you mind changing seats with Hiram?” asked Rob, upon hearing what the boy behind him had just said.

“Not at all; there’s plenty of room still,” replied the troop bugler, quickly slipping out and allowing Hiram to take his place, while he leaned forward over the back of the seat so he could join in the conversation.

“Are you sure it was this same man, Hiram?” asked Rob.

“I only had a quick look at him, and his back was toward me,” explained the nervous inventor, “but I’m most certain it was that agent. He had a rather odd little limp you see, and this feller did, too.”

Hiram had his hand laid upon his chest. Inside his coat he carried the precious papers, and just then the boy seemed to be more concerned about these than he was in connection with the pocketbook that reposed in a back pocket of his trousers, or the tickets he had in another repository.