. The structure and life of birds . Fig. 5& (after Marey). Gull flying—50 images per second. Marey has obtained images of flying Gulls, at the rateof fifty per second, showing the various phases of theup- and down-strokes. The Southport Gulls are 1 Some of this has been necessarily anticipated. SeeActive Machinery, and Movements of the Wing partlydue to the Action of the Air. VII FLIGHT 19. 220 THE STRUCTURE AND LIFE OF BIRDS chap. winging their way quite unconscious of cameras, andsensitive plates, and fame. On the other hand, American Eagle, with his somewhatdraggled plumes, lo
. The structure and life of birds . Fig. 5& (after Marey). Gull flying—50 images per second. Marey has obtained images of flying Gulls, at the rateof fifty per second, showing the various phases of theup- and down-strokes. The Southport Gulls are 1 Some of this has been necessarily anticipated. SeeActive Machinery, and Movements of the Wing partlydue to the Action of the Air. VII FLIGHT 19. 220 THE STRUCTURE AND LIFE OF BIRDS chap. winging their way quite unconscious of cameras, andsensitive plates, and fame. On the other hand, American Eagle, with his somewhatdraggled plumes, looks like a scared captive, consciousthat the camera is being aimed at him. However, itis only under conditions like these last, that photo-graphs such as those of Professor Marey, showing theposition of the wing at every stage, can be obtained. When the bird is flying with great energy, he raiseshis wings high till in some cases they touch oneanother, and this is the cause of the slapping noisethat we hear when a Pigeon rises from the wing next moves forward and downward, itsunder surface looking backwards and downwards. Inits forward movement it meets with little resistance,since it cuts edgeways through the air. When it canstrain no further forward and down, it is drawn back-ward and bent sharply at the wrist-joint, facing duringthe process forwards and downwards. Durin
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Keywords: ., bookcentury1800, bookdecade1890, bookidstructurelif, bookyear1895
