Barney was right. Frank glanced in the direction indicated and saw a thrilling act.
In the midst of the Sioux was Pomp bound to the back of a mustang.
Suddenly in the midst of the melee the horse was seen to bolt from the rest and dash out upon the prairie.
Of course, Pomp had no control over the beast, having his hands tied behind him.
The mustang took his own course and ran like the wind.
The Sioux did not dare to any of them attempt pursuit. The foe in their front claimed their attention.
“Bejabers, the horse is runnin’ away wid the naygur,” cried Barney. “Phwat will we do, Misther Frank?”
“Catch him if we can,” cried Frank, seizing the throttle rein.
He opened the throttle and let the Steam Man go ahead; with long strides the machine began to gain upon the mustang.
Pomp was vainly endeavoring to free his hands.