When they came up the Indian youth stood mutely pointing at something
in the sand.

Clearly imprinted in that sand was the shape of a human foot, a foot
that had worn neither boot nor moccasin when it left its trail in the
lake bed, but which was as naked as the quivering hand which Wabigoon
now held toward it!

And from that single footprint the eyes of the astonished adventurers
traveled quickly to a hundred others, until it seemed to them that a
dozen naked savages must have been dancing in these sands only a few
hours before.

And Rod, glancing toward the driftwood, saw something else,--something
toward which he pointed, speechless, white with that same strange
excitement that had taken possession of Wabigoon!




CHAPTER XIII


THE THIRD WATERFALL

The others followed Rod's arm. Behind him he heard the gentle click
of Wabigoon's revolver and the sharp, vicious snap of the safety on
Mukoki's rifle.