"Can't see him? Wasn't he with you?"
"Yes, but he dropped behind, to fix his shoe."
They began to call for the former farm lad, but without avail. Si was neither in sight nor hearing.
"Something has happened to him," groaned Mark. "Perhaps he has fallen over some steep rocks and been killed!"
CHAPTER XVIII
SI TAKES A TUMBLE
As has been said, Si had stopped to fix his shoe, which now hurt him more than it had for some time.
As he was bending over, the wind took off his cap and blew it across the trail. The headcovering lodged in some brushwood growing at the side of a steep incline.
"Drat the luck!" murmured the former farm boy, and having adjusted the shoe once more, he started to regain the cap.