“Well, one feather, a downy feather, will fly in the air, and carry its own weight and a little more, won’t it?”
“Yes,” the lad admitted, wondering what the goblin was driving at.
“Then won’t thousands of feathers confined in a bag fly higher and lift more than one feather alone will?”
“No,” positively.
“Tut—tut!” snapped the goblin. “You don’t know anything of the law of physics, it appears. Won’t a thousand volumes of gas confined in a bag fly higher and lift more than one volume unconfined will?”
“Why, of course,” irritably.
“Well!”—triumphantly,—“don’t the same law apply to feathers? Say!”
“I—I don’t know,” Bob stammered, puzzled but unconvinced.
“To be sure it does,” the goblin continued, smoothly. “I know; I’ve tried it. And you can see for yourself that my balloon’s a success.”
“Yes, but it wouldn’t carry me,” Bob objected; “I’m too heavy.”