With the words Frank jumped forward. The balloon had bobbed up again in one of its queer movements, and passed over their heads. They could hear the bare-headed man in the broken basket shouting at the top of his voice:

“Grab that rope! Hold her, till I can drop out!”

Then Frank made a dive, and the rope was in his hands. Another quick movement that fairly dazzled Bob, and he saw the prairie boy whip the end three times around the butt of a small but fairly stout tree that lay within reach. The boy, who was accustomed to roping cattle had used the sapling as a “snubbing post.”

There was a shock, as the rope came taut. The tree bent far over, and Bob half expected to see it torn up by the roots, or else break in two. Neither of these catastrophes came to pass, for that sapling was made of stern stuff. It bent, but did not give way. And the mad journey of the runaway balloon seemed to have been brought to a successful termination, there, close to the little patch of timber that grew along the stream near which the saddle boys had started to make their lone camp.

It was almost ludicrous to see how quickly the man in the basket started to get over the edge, and slide down that rope to the ground.

“He’s badly hurt!” exclaimed Bob, seeing the air-voyager tumble in a heap, as though unable to stand upon his legs.

Both boys were at his side in another second. They had thought the aeronaut must have swooned because of his injuries, or the sudden sensation of relief after expecting the worst that could befall him; but on their arrival he made a movement as though trying to get up.

“I guess I’m in a bad way, boys,” he groaned. “Feels like one of my legs has been fractured. The balloon smashed against a rock as I came over the top of the ridge away over yonder. That was what broke the basket. It nearly sent me out, and ever since I seem to have lost my head.”

“Well, you’re safe on the ground now,” said Frank, as he bent over the injured man.

“We were just making camp when he sighted you,” said Bob. “And if you say the word we’ll get you over to the place, and do all we can to help you.”