The tuff-tuff of a motor-cycle sounded faintly in the distance, as the resonant vibrating noise of the aëroplane came more triumphantly out of the hot blue sky. Save for a scintillating white reflection to the north that might have been the crystal dome of the great big Palm House in the Jardin d’Acclimatation, and that unavoidable, useful ugliness, the gilded lantern of the Tour Eiffel, thrusting up into the middle distance over the delicately-rounded masses of new foliage upon the right-hand looking east, the glory and shame and magnificence and squalor of the Queen City of Cities might have lain a hundred leagues away, so ringed-in by delicate austere brown of serried tree-trunks, rising above rich clumps of blossoming lilac, syringa, yellow azalea, and pink, mauve, and snowy rhododendron, was the spacious green arena wherein Franky and Margot were destined to play their part. Now, followed by the wide-winged shadow that the sun of high noon threw almost directly beneath her, darkening drifting cloud, and open city spaces, passing over breasting tree-tops and wide stretches of municipal greensward, the Bird of War drew nearer and more near.... And glancing up as the portentous flying shadow suddenly blotted out the sunlight, Franky realised that the two-seater monoplane was hovering, and buzzing as she hovered, like a Brobdingnagian combination of kite-hawk, dragon-fly, and bumblebee. He pulled out a pair of vest-pocket field-glasses and scanned her as she hung there, gleaming in the sunlight, at a height of perhaps five hundred feet above the white cloths on the grass. He could make out the Union Jack on her underwings, the huge black raking capitals of her name BIRD OF WAR painted on the side of the tapering canvas-covered fuselage, the diamond-shaped tail swaying between the pendant flaps of the huge triangular elevators, clearly as though these features had been filmed upon the screen. In a curious misty circle, spinning under the fuselage, he suspected lay the secret of her kite-like poise and hover, and behind his immaculate waistcoat he was sensible of a thrill. If the English inventor had not solved the baffling Problem of Stability, he had come uncommonly near it, by the Great Brass Hat! And the dud-heads at Whitehall had shown the door to him and his invention. "Good Christmas!—how like ’em!" reflected Franky, lowering the glasses to chuckle, and looking round for Margot. There she was, some twenty yards distant, planted right in the middle of the avenue, lost to the wide in rapt contemplation of the hovering aëroplane.