“How you going to do it?” asked the merchant’s son.

“I saw a big step ladder over here!” went on the tall lad, running toward a tent where was housed a dirigible balloon. “It’s an immense one. We can put it up near the rope, and he can get down on it.”

They found the ladder standing outside the tent, and it was the work of but a few seconds to rush it back to where the scientist was still dangling. Nor were they any too soon, for as they got it in place the swaying pole cracked off close to the ground, and the professor just managed to throw himself on the ladder which was grasped and held firm by scores of willing hands.

“Oh, dear! the grasshopper got away!” exclaimed the scientist as he reached the ground.

The professor thought more of the loss of the insect than he did of his own narrow escape, but a little later, having succeeded in capturing a curious kind of bug in the grass near the tent of the Comet, he forgot his troubles.

There were many interesting aerial exhibitions that afternoon, and several small races in which our heroes did not take part. Noddy Nixon and Bill went in one race and won it, much to the delight of the bully, though really he deserved small credit, for his machine was much more powerful than those of his competitors.

Then came the turn of our friends to show what could be done in their craft, and to the wonder of the crowd they went up almost out of sight, coasted down on a bank of air, propelled themselves as a dirigible balloon, as an aeroplane, making the change high above the earth and then did some other intricate evolutions. They received many vigorous rounds of applause.

That night our friends made a careful examination of their craft in anticipation of the races for high distance that were to take place on the morrow.

“Is Noddy going to compete against us?” asked Bob. “I suppose he will though.”