Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on AeronauticsD. Appleton, 1882 - 264 páginas |
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Página 36
... margin and the extremity of the wing , and may not inaptly be compared to the nervures in corresponding positions in ... posterior , and greatly elongated anterior extremities , with their enormous fingers and out- spreading membranes ...
... margin and the extremity of the wing , and may not inaptly be compared to the nervures in corresponding positions in ... posterior , and greatly elongated anterior extremities , with their enormous fingers and out- spreading membranes ...
Página 76
... margin ; and a thin , flexible , and more or less elastic posterior margin . They are screw structures , and when elevated and depressed in the water , twist and untwist , screw - fashion , precisely as wings do , or the tails of the ...
... margin ; and a thin , flexible , and more or less elastic posterior margin . They are screw structures , and when elevated and depressed in the water , twist and untwist , screw - fashion , precisely as wings do , or the tails of the ...
Página 89
... margin and a thin posterior one , and in this respect resemble wings . Compare with figs . 36 and 37 , pp . 74 and 76. - Original . rus . quaint animal move alternately , and tilt or partially rotate during their action , as in the sea ...
... margin and a thin posterior one , and in this respect resemble wings . Compare with figs . 36 and 37 , pp . 74 and 76. - Original . rus . quaint animal move alternately , and tilt or partially rotate during their action , as in the sea ...
Página 94
... posterior margin is directed upwards and backwards . This has the effect of directing the under or ventral concave ... margins and under surface of the pinion being reversed for this purpose . The object now is not to depress but to ...
... posterior margin is directed upwards and backwards . This has the effect of directing the under or ventral concave ... margins and under surface of the pinion being reversed for this purpose . The object now is not to depress but to ...
Página 105
... margins ( anterior and posterior ) arranged in nearly the same plane with the horizon , 1 rotates upon its anterior margin as PROGRESSION IN OR THROUGH THE AIR . 105.
... margins ( anterior and posterior ) arranged in nearly the same plane with the horizon , 1 rotates upon its anterior margin as PROGRESSION IN OR THROUGH THE AIR . 105.
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