Chapter 11 N. A. L.

"Stolen!" exclaimed Dave, in dismay.

"It startles you?" spoke the manager of the Interstate Aeroplane concern. "So it did us."

"But-"

"You are mystified-unusual occurrence rather. You can follow the track of a stolen automobile. But when it comes to pursuing an airship, you won't find many familiar roads in the clouds."

"How did it happ