"Come here, Grit!" called Dick to his prize bulldog. "First you
know someone will step on you, and you'll just naturally take a
piece out of his leg. You don't belong in a crowd."

Grit came at the word of command, and Dick, slipping on the leash,
gave the animal in charge of one of the orderlies to be taken to
the stable. Grit whined and barked in protest at being separated
from his master, but Dick wanted no accidents.

"Do you find anything wrong?" asked Innis of his cousin, as the
latter went carefully over each part of the wrecked airship.

"Well, it's hard to say, on account of there being so many broken
places," was the answer. "The engine is not as badly smashed as I
expected, but it will take some time to examine and test the
gyroscope attachment. I shall remove it and set it up separately."

"Well, it's my opinion that it was monkeyed with, and done on
purpose, too!" declared Jack Butt. "And I could almost name the
fellow who did it. He was--"

"Hush! No names, if you please," interrupted the aviator. "We will
investigate first."

"All right, sir! Just as you say," grudgingly agreed the other.
"But if ever I get my hands on him--!"

Jack Butt looked rather vindictive, and probably with good reason.
For had he not been near to death; and, as he thought, through the
evil work of some enemy.