"What are you going to do?" asked Jack.

"I'm going to rope that steer!" yelled the Indian lad.

He ran to where the cattleman had fallen from his horse. The rider's leg was caught, and when he tried to stand, as John helped him up, it was seen that it was broken.

"Is the horse a fast one?" John asked, pulling in the lariat, and coiling it.

"He sure is," was the answer, while the man stretched out on the ground to wait for aid, which was on the way.

A moment later John had mounted the horse and was off on a gallop after the steer, which was circling around in a wild endeavor to escape into the open. It's wild bellows were producing a panic among the other animals, that were dashing about in the pens, in imminent danger of knocking the sides down.

As John, who seemed to be perfectly at home in the saddle, rode at the animal, it gave a snort and dashed off down a railroad track. Just ahead of it a freight train was coming, but the steer did not see it, as it dashed on, with lowered head.

Straight down the track after the steer, raced John, urging the horse to top speed. Above his head swung the lasso, which the boy handled almost with the skill of a veteran.

"Come back!" yelled Mr. Post. "Don't you see the train?"

Evidently John did see, but he was not going to stop. He realized that unless he stopped the maddened steer it would dash ahead on into the locomotive. While it could not do the ponderous machine any harm, there was every chance of derailing it, if the wheels ground over the lifeless body, and a wreck might follow.