“I’ve got an idea that I ought to run down a branch line of the road I have never been over,” suggested Fred, at the close of their animated colloquy. “If I do, I’ll have to catch a train in an hour. I’ll get word to you soon again, and if you hear of anything that interests me, I’ll arrange so that a letter or a wire will reach me if you address it to Marvin Clark, Lake Hotel, Wellsville.”

“All right,” agreed Ralph.

They strolled together down to the depot a little 168 after that. A train from the west came in just as the one having Fred for a passenger steamed out. A familiar figure alighted from one of the coaches.

“Here I am again,” announced Zeph Dallas, coming up to Ralph.

“How are your little friends, the Canaries?” inquired the young engineer.

“Safe and snug at home,” replied Zeph. “Going up to the house?”

“Yes, just come in from a special trip, and I probably have a lay-over till to-morrow. I want to call and see a friend at the hotel for a few moments. Then I’m at your service.”

When they reached the hotel, Ralph sought out Archie Graham, to find the young inventor in his room, engrossed in putting together some kind of a mechanical model. The latter greeted Ralph with effusion.

“I’m having the prime chance of my life,” declared Archie. “That note of yours was the open sesame to the roundhouse and everything about it. The foreman made me as welcome as a friend. I say, Fairbanks, they think a lot of you, these railroad chums of yours.”

“Do they?” asked Ralph, with a modest smile. “I’m glad they do.”