ol demonstrations. In maries automatically increased the distance between ish Aeronautical Society, has made a close study of the this the spiral is done away with, and the piston is the wing tips, and opened the wrist automatically structure of a bird’s wing, its functions, and opera- ac‘uated… … THE BIRD AS A MODEI FOR THE AEROPLANE. essentially an elastic structure. The absence of re- unequal variation of the sounds, to indicate exactly the more than twenty years ago that for ordinary flight curvation at the lower portions of the record, taken in number of vibrations of each sound upon…
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