"Now, I wonder what that could be?" said a voice close beside him.
"Why, hello, Wallace, is that you?" laughed Paul; "and I guess you must have made the same discovery I did?"
"Meaning that queer little light up there, eh, Paul?" remarked the other, who had been walking about uneasily, and just chanced to face upward at the time the double flash came.
"Yes. I wonder what it was," Paul went on, thoughtfully. "I happen to know that Ted and his bunch are ahead of us somewhere, and that might have been a signal to fellows who were left down here to do something to upset our camp."
"Now, do you know, Paul," Wallace went on; "I hadn't thought of that. I'll tell you what it looked like to me—some man lighting his pipe. You saw the light go up and down; that was when he puffed. But it was too far away to see any face."
Paul, remembering the man who had gone up the side of the mountain with that rig, wondered very much whether Wallace could be right, and if the unknown was even then looking down upon them from that height.
This made him turn his thoughts back to the noon camp, and try to remember whether the man in the buggy had shown that he recognized Joe
at the time the boy so suddenly sprang to his feet with a cry.
At any rate the unknown had whipped up his horse, and seemed in a great hurry to depart from the spot.