Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 17
ng. The different parts of the wing travel at different speeds, . . 252 How the wave wiug creates currents and rises upon them, and how the air assists in elevating the wing, . . 253 The artificial wing propelled at various degrees of speed during the down and up strokes, ..... 255The artificial… … LIST OF ILLUSTRATIONS. The Engravings are, with few exceptions, from Photographs, Drawings, andDesigns by Mr. Charles Berjeau and the Author. Such as are not originalare duly acknowledged. PAGE FRONTISPIECE. In the clutch of the enemy—(The Graphic). The three orders of lever—(Bishop), . . , . 19,…
Animal locomotion · Aeronautics
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