After going down a few feet, Tad began treading water with all his might. This checked their downward course and in a second or so he had the satisfaction of realizing that they were slowly rising. The current, however, was forcing them up at an angle.

This, to a certain extent, worked to the boy's advantage, for the Chinaman was underneath him, thus giving Tad more freedom than had their positions been reversed.

"There they are!" cried Big-foot Sanders as the Chinaman and his would-be rescuer popped into sight.

"Go after them!" commanded Stallings.

Urging their ponies forward by beating them with their quirts, the cowboys made desperate efforts to reach the two.

Tad managed to free one arm which he held above his head.

"The rope! He wants the rope! Rope him, you idiots!" bellowed the foreman.

Big-foot made a cast. However, from his position in the water, he could not make an accurate throw and the rope fell short.

Tad saw it. He was struggling furiously now, ducking and parrying the sweep of that long, yellow arm, with which Pong sought to grasp him.

A quick eddy caught the pair and swept them out into the center of the stream, around a bend where they were caught by the full force of the current. This left their pursuers yards and yards to the rear.