“At any rate we’ve stopped going up,” he called out. “We’re standing still!”
His companions watched the scraps of paper anxiously. Slowly they began to settle toward the earth.
“That proves it,” said Bart. “We’re standing still.”
“Lot of good it will do us,” came from Ned. “How long will we have to stay here?”
“Hard to say,” Bart replied. “But you wanted this to happen so you ought to be satisfied.”
“If I’d known it was like this I’d never wished for it even in fun,” spoke Ned. “Don’t you s’pose we can get down?”
“Sure; sometime. The gas can’t stay in the bag forever. Some is bound to leak out and we’ll descend. Besides, as it gets colder we’ll drop some.”
“How?” asked Frank.
“Why the man told me the cold sort of condenses the gas. Makes it so there isn’t so much of it, and it hasn’t the same lifting power. But there’s one disadvantage to that.”