“And when they want to come down what do they do?”
“Let the gas out of the bag,” Bob said at a venture.
“That’s it,” Fitz Mee nodded. “And then they can’t go up again till they’ve refilled the bag—eh?”
“I guess that’s the way of it.”
“To be sure it is. Well, we work the thing better with our feather-bed balloons.”
“We?” Bob cried. “Do all goblins use feather-bed balloons?”
“Of course we do; that’s the way we travel. Didn’t you know that?”
“No; I never heard of it.”
“My—my!” Fitz Mee laughed. “You have a lot to learn, Bob. But I’ll show you how I can bring my balloon to earth or send it to the skies in a jiffy. When I wish to descend I just pump that tank full of compressed air. See?”
“No, I don’t see,” Bob declared.