"And I want to see them, Tom. Don't you think you're making a mistake,
though, in equipping it with a wireless outfit?"

"Why so?"

"Well, because it will add to the weight, and you want such a small
machine to be as light as possible."

"Yes, but you see I have a very light engine. That part my father helped
me with. In fact, it is the lightest air-cooled motor made, for the
amount of horsepower it develops, so I can afford to put on the extra
weight of the wireless outfit. I may need to signal when I am flying
along at a hundred miles an hour."

"That's so. Well, show me some of the other good points. You've
certainly got a wonderful craft here."

Tom and Mr. Sharp spent some time going over the Humming-Bird and in
talking over old times. The balloonist paid another visit to Mr. Swift,
who was feeling pretty good, and who expressed his pleasure in seeing
his old friend again.

"Can't you stay for a few days?" asked Tom, when Mr. Sharp was about to
leave. "If you wait long enough you may be able to help me work up the
clues against Andy Foger, and also witness a trial flight of the
Humming-Bird."

"I'd like to stay, but I can't," was the answer. "The committee will be
anxious for me to get back with my report. Good luck to you. I'll see