a conclusion every time. I'll write to Mr. Sharp at once."

Chapter Thirteen

A Clash with Andy

Tom lost no time in writing to Mr. Sharp. He wondered more and more at
his own neglect in not before having asked the balloonist, when the
latter was in Shopton, where Andy was building his aeroplane. But, as
it developed later, Mr. Sharp did not know at that time.

While waiting for a reply to his letter, Tom busied himself about his
own craft, making several changes he had decided on. He also began to
paint and decorate it, for he wanted to have the Humming-Bird present a
neat appearance when she was officially entered in the great race.

Miss Nestor called on Tom again, and Mr. Damon was a frequent visitor.
He agreed to accompany Tom to the aviation park when it was time for
the race, and also to be a passenger in the ten-thousand-dollar contest.

"It must be perfectly wonderful to fly through the air," said Miss
Nestor one day, when Tom and Mr. Damon had the Humming-Bird out on the
testing ground, trying the engine, which had been keyed up to a higher
pitch of speed. "I consider it perfectly marvelous, and I can't imagine
how it must seem to skim along that way."

"Come and try it," urged Tom suddenly. "There's not a bit of danger.
Really there isn't."

"Oh! I'd never dare do it!" replied the girl, with a gasp. "That
machine is too swift by name and swift by nature for me."

"Why don't you take Miss Nestor on a grass-cutting flight, Tom?"
suggested Mr. Damon. "Bless my lawn mower! but she wouldn't be
frightened at that."

"Grass cutting?" repeated the girl. "What in the world does that mean?"

"It means skimming along a few feet up in the air," answered the young
inventor, who had now fully recovered from the effects of the blow
given him by the midnight intruder. In spite of many inquiries, no
clues to his identity had been obtained.

"How high do you go when you 'cut grass,' as you call it?" asked Miss
Nestor, and Tom thought he detected a note of eager curiosity in her
voice.

"Not high at all," he said. "In fact, sometimes I do cut off the tops
of tall daisies. Come, Mary! Won't you try that? I know you'll like it,
and when you've been over the lawn a few times you'll be ready for a
high flight. Come! there's no danger."

"I--I almost believe I will," she said hesitatingly. "Will you take me
down when I want to come?"

"Of course," said Tom. "Get in, and we'll start."

The Humming-Bird wa