He wavered.

Then he saw Skookum coming back on the trail.

The dog trotted up to the boy and dropped a glove, one of Quonab's.

Undoubtedly the Indian had lost it; Skookum had found it on the trail and mechanically brought it to the nearest of his masters.
Without that glove Quonab's hand would freeze.

Rolf rose and sped along the other's trail.