Nearer and nearer, moving with measured precision, came the “Border City.”
Dave drew a long breath.
“It’s headed straight for the mountains, Cranny,” he said.
“Do they want to get bumped against some high peak? Why in the world doesn’t Major Carroll come down?”
“Perhaps he isn’t willing to let any of the gas escape.”
“And the propellers aren’t working. Guess that explains it—something wrong with the engine.”
“Say, shall I have to drag you away?”
Dave yielded his place.
“My, but isn’t it sailing along, though!” burst out Cranny. “There goes some ballast overboard.”
“Trying to find a favorable current of air, I suppose,” said Dave.