"Wait till the Interstate folks send on their latest improved
aero-hydroplane, Mr. Grimshaw," said Dave. "You'll see some fine
work then."

"There's your friend, young Dobbs," remarked Grimshaw.

Dave saw Hiram on a run, headed towards them. He came up
breathless.

"Some one at the hangar to see you, Dave," he reported.

"Who is it, Hiram?"

"He says he's a United States revenue officer."

"Hello!" spoke Grimshaw, "I hope your hydroplane hasn't got you into
any trouble running up against the government."

"Oh, I think not," replied Dave with a smile.

"It's a long story and a big story, Dave," replied Hiram. "You know
the man you rescued he lake yesterday?"

"Yes, Hiram."

"Well, it turns out that he is a notorious smuggler and the
government is looking for him."