"Whoopee!" cried Jerry. "That's sure goin' some."
"It doesn't seem to go that fast when you're up in the air," explained Hawke. "If you are gliding close to the ground the speed seems terrific, but after you reach the high altitudes you hardly notice that the machine is moving."
"They looked as though they was moving when I saw them at Nassau Boulevard meet," put in Tender Gray. "There was a half dozen of them up in the air at once most of the time."
"All biplanes like this one?" asked Fly, a little proud of his knowledge.
"Monoplanes too. Bleriots, Dumonts, Curtiss, Wrights, all kinds."
"What you fellows talking about?" asked Dunk, who knew little about the subject.
"Well, we mean, did they have two wings or one?" answered Fly, in an offhand tone.
"What's wings?" persisted Dunk, not to be put down.
"Why this is a biplane," explained Fly, with assumed grandness, putting his thumb under his armpit, "'cause it's got two wings, top and bottom—this and this." He pointed to the main planes. "A monoplane has only one wing, the top. And—"
"Stand back and give the professor room," interrupted Dunk, with mock solemnity.