"Got it out of his head--and from watching birds fly, too, I reckon," said Uncle Tel. "That boy, he's always snatching time to sit out here on the top of old Hogback Hill, watching buzzards sail, crows flap, and how the lark gives a little spring when she sails up into the sky. Looky here, see that sort of spring, set there where the glider rests on its skid? That's what Buddy calls his 'lark spring up.' It helps him get gliding in a shorter run than he could before he put it there."