a watch out for Clark, just as I am doing. You might get a clew to him or run across him."
"But how should I know him?" inquired Ralph.
"I'm going to give you his picture."
"That will help."
Fred drew out a memorandum book and selected from it a small photograph, which he presented to Ralph. The latter saw a bright, manly face portrayed in the picture.
"You keep that," directed Fred.
Ralph reflected for a few moments. Then they discussed the situation in all its bearings. There was not much to suggest, however, on the part of the young engineer. The most they could hope for, he told Fred, was that one or the other of them might by some circumstance run across the missing Clark and his young charge.
"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 lit-
