Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on AëronauticsD. Appleton, 1893 - 264 páginas |
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Página 12
... downward and forward curve , and elevates the body in an upward and forward curve . When the body descends , it describes a downward and forward curve , the wing being elevated in an upward and forward curve . The curves made by the ...
... downward and forward curve , and elevates the body in an upward and forward curve . When the body descends , it describes a downward and forward curve , the wing being elevated in an upward and forward curve . The curves made by the ...
Página 53
... forward . It is in this movement that the wonderful mechanism of the foot is dis ... forwards . I have stated that the angles formed by the bones of the human ... upward direction given to the crest of the ilium in man , is so great that ...
... forward . It is in this movement that the wonderful mechanism of the foot is dis ... forwards . I have stated that the angles formed by the bones of the human ... upward direction given to the crest of the ilium in man , is so great that ...
Página 80
... upwards , and a greater or less backward thrust given each time the hands reciprocate . The progress made at first ... forward or backward direction . The position most commonly assumed in swim- ming 80 ANIMAL LOCOMOTION .
... upwards , and a greater or less backward thrust given each time the hands reciprocate . The progress made at first ... forward or backward direction . The position most commonly assumed in swim- ming 80 ANIMAL LOCOMOTION .
Página 83
... upwards , and hence the bobbing or vertical wave - movement observed in the ... forward strokes , because the arms and hands , so long as they move ... forward . The efficiency of the legs and feet as propelling organs during extension is ...
... upwards , and hence the bobbing or vertical wave - movement observed in the ... forward strokes , because the arms and hands , so long as they move ... forward . The efficiency of the legs and feet as propelling organs during extension is ...
Página 92
... upwards and forwards . In aërial flight the long axis of the body of the bird and the short axis of the wings are inclined slightly upwards , and make a forward angle with the horizon . In subaquatic flight the long axis of the body of ...
... upwards and forwards . In aërial flight the long axis of the body of the bird and the short axis of the wings are inclined slightly upwards , and make a forward angle with the horizon . In subaquatic flight the long axis of the body of ...
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Palavras e frases frequentes
action aërial albatross angle animal arms and legs arrangement artificial wave artificial wing ascends backwards bat and bird biped blades body bones Borelli Compare with fig concave depressed described downward dugong effective stroke elastic ligaments elbow-joint elevating and propelling ellipse elytra extended feet fins fish flexed flexible flexion flight flying foot force gannet glide hind horizontal direction humerus inclined planes increased insect wing joint kite less lever limbs locomotion long axis manner Marey motion move movements muscles muscular muscular system natural wing nervures oblique oscillate pectoral fins pinion porpoise portion position posterior extremities posterior margin posterior or thin produced quadruped rapidity remarkable resistance reverse right arm root rotation sail screw sea-bear shoulder-joint side speed spiral swimming tail thick margin travelling surfaces trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking waved track weight wing descends