a chance to tamper with it!" exclaimed Jack Butt.

"You must not make such positive statements," warned his chief.
"It may not have been Larson."

"Well, your machine was tampered with; wasn't it, just before we
sank into the river?"

"Yes, and that was what made us fall."

"Well, I'm sure Larson monkeyed with it, and no one can make me
believe anything else," said Jack, positively. "If he comes around
here--"

"He isn't likely to," interrupted Dick. "The army aviators were
sent to Texas, I believe, to give some demonstrations at a post
there."

"You never can tell where Larson will turn up," murmured Jack.

Dick was shown the progress of the work, and was consulted about
several small changes from the original, tentative plans. He agreed
to them, and then, as it was only a question of waiting until his
craft was done, he decided to call on some of his friends at
Hamilton Corners.

Innis and Paul arrived in due season, and were delighted at the
sight of Dick's big, new aircraft, which, by the time they saw it,
had assumed more definite shape. Mr. Vardon and his men had worked
rapidly.