"Excuse me, Mr. Green, but you'll have to find that out for yourself."
"Who were they?" pressed the operator.
"As I said before, Mr. Green, you'll have to find that out for yourself."
"Then I guess I'll take you youngsters in on the charge. You know that I belong to the railway police, don't you?"
"Yes; and I also know," smiled Dick steadily, "that, if you don't succeed in proving your charge, you'll lay both yourself and the railroad liable to damages for false arrest."
Mr. Green looked a bit uneasy. This is a point of law intended to restrain officers of the law from making arrests without evidence.
"For the last time, will you tell me the names of the boys who threw the stones?"
"No," Dick rejoined, "for we don't know exactly what boys did the throwing."
"Name the boys you suspect, then."
"Nothing doing," Dave Darrin interposed, with emphasis.