"Somebody on wheels," he cried. "Turn the light on 'em!"
Dick did as requested, and to their astonishment they beheld two young fellows on bicycles. They had their heads bent low over the handlebars, and were streaking along at top speed. Soon a bend of the road hid them from view.
"Those are the chaps who put that glass in the roadway," said Tom.
"I believe you," answered his brother. "They came up here on their wheels and walked through the woods to do it. The question is, who are they?"
"They are enemies of ours," was the prompt answer.
"Yes; but how did they know we were coming this way, and in the auto?"
"They might have overheard us talking to Songbird or Stanley."
"Can they be Flockley and Koswell?"
"More likely Koswell and Larkspur. Flockley hasn't the backbone to do a thing like this, He's too much of a dude."
Dick and Tom took a look around the vicinity. By the light of the lamp they saw where the others had leaped the fence and mounted their bicycles.