“About fifty to a hundred feet. Are you getting out of the wheel tracks?”

“Yes. What shall we do now?”

“Put on the remaining boot.”

“Oh, I see; you didn’t want the tracks to disappear all at the same time?”

“That is the idea. You see, this is pretty firm ground. Now, Harry, can we turn the team around at right angles and go up over that steepest part?”

“I am afraid it will be a big pull.”

“All right, then; there are plenty here to help the yaks over. This is a capital place to leave the trail. I imagine they will follow it up along the valley, and not suspect that we have hauled the wagon across the hill.”

The object of this maneuver was now fully comprehended. The most infinite pains were taken to eliminate all traces of the wagon, and Muro was on hand at every point, and was most expert in the art of concealing.

The proceeding amused him exceedingly, as was shown by the constant smile that manifested itself in a chuckle, to the delight of the boys. This was real fun, and surely the boys needed it; but with all that they could not keep their minds from the Professor, and the constant speculations as to his fate.

CHAPTER XIII
THE BEREES WARRIORS UNDER COMMAND OF THE PROFESSOR