just like the way the barometer is acting. It's falling pretty fast."
"Bless my mercury tube!" cried Mr. Damon. "I hope we have no bad luck on this trip."
"Oh, we can't help a storm or two," answered Tom. "I guess it won't do any harm to prepare for it."
So everything was made snug, and movable articles on the small exposed deck of the airship were lashed fast. Then, as night settled down, our friends gathered about in the cheerful cabin, in the light of the electric lamps, and talked of what lay before them.
As Mr. Damon could steer as well as Tom or Ned, he shared in the night watch. But Mr. Petrofsky was not expert enough to accept this responsibility.
It was when Mr. Damon finished his watch at midnight, and called Tom, that he remarked.
"Bless my umbrella, Tom. But I don't like the looks of the weather."
"Why, what's it doing?"
"It isn't doing anything, but it's clouding up and the barometer is going down."
"I was afraid we were in for it," answered the young inventor. "Well, we'll have to take what comes."
The airship plunged on her way, while her
