“How?” inquired Fenn.
“Why as soon as it gets warm again, when the sun comes out, it expands the gas and we’ll rise.”
“Keep on going back and forth, eh?” asked Ned.
“That’s about it,” said Bart.
“I’ve got a plan,” suggested Fenn.
“What, Stumpy?” inquired his chums eagerly.
“I could cut a hole in the bag with my knife and let some of the gas out.”
“How could you reach the bag? The lowest end of it, the neck, where the gas went in, is ten feet over our heads.”
“I could climb up the cordage. I read of a fellow doing that once.”