But this was a failure.

The pony kept straight ahead, running due eastward, as the youth could see by the sun.
"All right, go as far as you please," said Dave, grimly.

"If you can stand it, so can I," and he settled in the saddle.
Another two miles were covered, and then the bronco commenced to slacken his speed.

Dave was on guard at this, and it was well to be, for, a second later, the pony once more tried the trick of flinging his rider over his head.

But the effort was a failure, and in return Dave dug his knees deeply into the steed's ribs.