Bacon, Gertrude, 1874-1949 · New York, Dodd, Mead & company; [etc., etc.] · leaf 107
bodies which, though heavierthan the atmosphere, yet contrive to rise up-wards into the sky ; these are, firstly, birds, andsecondly, the familiar schoolboy toys, kites.To imitate the flying powers of birds and 108 BALLOONS AND FLYING MACHINES kites, he must first understand the means bywhich their… … Kestkel. as hawks and gulls—winging their way aboutthe sky, we may notice that their flight isaccomplished in two ways; either they aremoving through the air by flapping theirwings up and down, or else with wings wideoutstretched they are soaring or sailing in theair for long times together without…
Aeronautics
Internet Archive · UNC Libraries · Public Domain Mark 1.0. Free to use for anything.
