Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on AeronauticsD. Appleton, 1882 - 264 páginas |
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Página 34
... longitudinal muscular cycles ( the former occurring in their most perfect forms where the extremities are united to the ... long axis , so as to present the lower portion of the body and the feet obliquely to the water during the return ...
... longitudinal muscular cycles ( the former occurring in their most perfect forms where the extremities are united to the ... long axis , so as to present the lower portion of the body and the feet obliquely to the water during the return ...
Página 58
... long as the rotation continues , the body rises . When the rotation ceases and one foot is placed flat upon the ... axis ; and that when the leg is not swinging , but fixed by its foot upon the ground , the trunk rotates upon the foot as an ...
... long as the rotation continues , the body rises . When the rotation ceases and one foot is placed flat upon the ... axis ; and that when the leg is not swinging , but fixed by its foot upon the ground , the trunk rotates upon the foot as an ...
Página 69
... long - bodied fishes , such as the eels , the number of the curves is increased , but in every case the curves occur ... axis of motion ( a b ) during extension , and its convexity ( c and v ) away from the axis of motion ( ab ) during ...
... long - bodied fishes , such as the eels , the number of the curves is increased , but in every case the curves occur ... axis of motion ( a b ) during extension , and its convexity ( c and v ) away from the axis of motion ( ab ) during ...
Página 70
... long axis so as to present the tail obliquely to the water . The resistance experienced by the tail when in the positions indicated by g h , kl , is increased by the tail being divaricated , by its being moved with increased energy ...
... long axis so as to present the tail obliquely to the water . The resistance experienced by the tail when in the positions indicated by g h , kl , is increased by the tail being divaricated , by its being moved with increased energy ...
Página 72
... long axis , and from side to side by causing its anterior and posterior portions to assume opposite curves . The pectoral and other fins are also thrown into curves when in action , the movement , as in the body itself , travelling in ...
... long axis , and from side to side by causing its anterior and posterior portions to assume opposite curves . The pectoral and other fins are also thrown into curves when in action , the movement , as in the body itself , travelling in ...
Outras edições - Ver tudo
Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1885 |
Animal Locomotion, Or, Walking, Swimming, and Flying: With a Dissertation on ... James Bell Pettigrew Visualização integral - 1874 |
Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1893 |
Palavras e frases frequentes
action aërial animals arrangement artificial wave wing artificial wing ascends ball-and-socket joint bat and bird biped blades body bones Borelli Compare with fig concave dead points depressed described downward dugong elastic bands elastic ligaments elbow-joint elevating and propelling elytra extended feathers feet fish flexed flexion flight flying foot force fore gannet gliding gravity hind horizontal direction humerus inclined planes increased insect insect wing kite less lever limbs locomotion long axis machine manner Marey motion move movements muscles muscular muscular system natural wing oblique oscillate ostrich pectoral fins pinion piston porpoise portions position posterior margin posterior or thin produced quadruped rapidity remarkable resistance reverse rigid root rotation sail screw shoulder-joint side Sir George Cayley speed spiral superior band swimming tail thick margin tion trunk universal joint upward direction upwards and forwards velocity vertical vibrate walking waved track wedge weight wing descends