As the ship climbed away for the skies, and through the transparent floor the beach and the Atlantic fell away below the ship, a sigh of relief escaped Kleig. This was living! Up here one was free, if only for a moment, and the swift wind of flight brushed all cobwebs from the tired human brain. He watched the slender needle of the altimeter, as it moved around the face of the dial as steadily as the hands of a clock, around to thirty thousand, thirty-five, forty. Then Carlos Kane, every movement as effortless as the flight of the silvery winged Mayther, thrust forth his hand to the dash again, pressed another button. Instantly the propellers vanished into a blur as the vanes of the helicopter dropped down the slender staff and the vanes themselves fitted snugly into their appointed notches atop the wing. * * * * * For a second Carlos Kane glanced at the tiny map to the right of the dash, and set his course. It was a matter of moments only, but while Kane worked, Prester Kleig studied the instruments on the dash, for it had been months since he had flown, save for his recent half-dreamlike experience. There was a button which released the mechanism of the deadly guns, fired by compressed air, all operated from the noiseless motor, whose muzzles exactly cleared the tips of Mayther's wings, two guns to each wing, one on the entering edge, one on the trailing edge, fitted snugly into the adamant rigging. Four guns which could fire to right or left, twin streams of lead, the number of rounds governed only by the carrying power of the Mayther. Prester Kleig knew them all: the guns in the wings, the guns which fired through the three propellers, and the guns set two and two in the fuselage, to right and left of the pits, which could be fixed either up or down--all by the mere pressing of buttons. It was marvelous, miraculous, yet even as Kleig told himself that this was so, he felt, deep in the heart of him, that Moyen knew all about ships like these, and regarded them as the toys of children. Kane touched Kleig on the shoulder, signaling, indicating that the atmosphere in the pits had been regulated to their new height, and that they could remove their helmets and oxygen tanks without danger. * * * * * With a sigh Prester Kleig sat back, and the two friends turned to face each other. "You certainly look done in, Kleig," said Kane sympathetically. "You must have been through hell, and then some. Tell me about this Moyen; that is, if you think you care to talk about him."