"Me? Oh, well-er-that is, you see; well, I'll think about it," and Mr.
Swift went to his own room, carrying with him a package of papers,
containing intricate calculations.

Tom shook his head, but said nothing. He could not understand his
father's conduct.

Work was started the next day on fitting up the car, or cabin, of the
airship, so that several persons could live, eat and sleep in it for
two weeks, if necessary. The third day after this task had been
commenced the mail brought an unusual communication to Tom and Mr.
Sharp. It was from an aero club of Blakeville, a city distant about a
hundred miles, and stated that a competition for aeroplanes and
dirigible balloons was to be held in the course of two weeks. The
affair was designed to further interest in the sport, and also to
demonstrate what progress had been made in the art of conquering the
air. Prizes were to be given, and the inventors of the Red Cloud, the
achievements of which the committee of arrangements had heard, were
invited to compete.

"Shall we go in for it, Tom?" asked the balloonist.

"I'm willing if you are."

"Then let's do it. We'll see how our craft shows up alongside of
others. I know something of this club. It is all right, but the
carnival is likely to be a small one. Once I gave a balloon exhibition
for them. The managers are all right. Well, we'll have a try at it.
Won't do us any harm to win a prize. Then for a long trip!"