“No, but speed around, do some stunts and then come down in the middle of the park.”

“All right, we’ll try it.”

And indeed Jerry was not a little proud of what their craft could do, so he was willing to fall in with Bob’s idea.

The Comet was sent up, and then directed downward. Then Jerry put her through some intricate evolutions, to show what control he had of her.

Though it was early there was a big crowd on the grounds and they were much interested in what was going on. The boys could see thousands of persons gazing up at them. They noted numbers of tents and sheds which evidently housed the big aircraft. There were several balloons without shelter, the big bags, partly filled, swaying in the wind.

One dirigible in particular attracted their attention. It was very large, and seemed to have a large boat-shaped cabin attached below it. In fact, the lower part was not unlike their own Comet.

About this craft there was quite a throng, and men could be seen busily engaged, evidently in getting it ready for a flight.

“Well, I guess we’ve done enough,” remarked Jerry at length. “We’d better go down.”

“Yes,” agreed Ned. “I’d like to see what sort of a craft that one is,” and he motioned to the big dirigible.