those clews cannot fail to work out this entire case. We shall soon
receive some great reports from you."

"I hope so," said Dave.

"Now then, you and your friend go over to the aerodrome and see
which one of our machines there suits you best."

It was after Dave and Hiram had spent the most fascinating half hour
of their lives viewing the wonders of mechanism on display, that the
manager rejoined them. It was then, too, that Dave reported to him
with the words:

"That is the machine I want, Mr. Randolph."

As Dave spoke he pointed to a monoplane of which he had made a close
inspection for over ten minutes. The manager burst out into a
hearty laugh.

"Well, well!" he cried, clapping Dave on the shoulder in an
approving way, "I must say you are certainly a grand judge of
monoplanes."

"How is that?" asked Dave.

"You have picked out the best machine in the place."

"Why, I was looking for the best one, wasn't I, Mr. Randolph?" asked
the young aviator with a smile.