Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 páginas |
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Página vi
... rising when the wing is falling , and vice versâ , Flight the least fatiguing kind of motion . stronger than terrestrial ones , Fins , flippers , and wings form mobile helics or screws , Artificial fins , flippers , and wings adapted ...
... rising when the wing is falling , and vice versâ , Flight the least fatiguing kind of motion . stronger than terrestrial ones , Fins , flippers , and wings form mobile helics or screws , Artificial fins , flippers , and wings adapted ...
Página xii
... The long and short axes of the wing , 149 The waved tracks described by the wing and body of the bird as they alternately rise and fall , • 157 , 163 The positions assumed by the wing of the bird during xii LIST OF ILLUSTRATIONS .
... The long and short axes of the wing , 149 The waved tracks described by the wing and body of the bird as they alternately rise and fall , • 157 , 163 The positions assumed by the wing of the bird during xii LIST OF ILLUSTRATIONS .
Página 10
... rise to a double twisting of the body at the shoulders and loins . The legs and arms when advancing move in curves , the convexities of the curves made by the right leg and left arm , which advance together when a step is being made ...
... rise to a double twisting of the body at the shoulders and loins . The legs and arms when advancing move in curves , the convexities of the curves made by the right leg and left arm , which advance together when a step is being made ...
Página 13
... rising . The effort is of short duration , and inaugurates rather than perpetuates flight . If the volant animal can launch into space from a height , the preliminary effort may be dispensed with as in this case , the weight of the ...
... rising . The effort is of short duration , and inaugurates rather than perpetuates flight . If the volant animal can launch into space from a height , the preliminary effort may be dispensed with as in this case , the weight of the ...
Página 32
... rise to the myocommas and to that concentric arrange- ment of their constituent parts so evident on transverse section . This tendency of the muscular fibres to cross each other at various degrees of obliquity may also be traced in ...
... rise to the myocommas and to that concentric arrange- ment of their constituent parts so evident on transverse section . This tendency of the muscular fibres to cross each other at various degrees of obliquity may also be traced in ...
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Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Sin vista previa disponible - 2016 |
Términos y frases comunes
action aërial animals arms and legs arrangement artificial wave artificial wing ascends axes backwards bat and bird beetle biting surface blades body bones Borelli Compare with fig concave convex coracoid Crown 8vo depressed described downward dugong elastic ligaments elbow-joint elevating and propelling ellipse elytra extension extremities feet fins fish flexed flexible flexion flight flying foot gannet horizontal direction humerus inclined planes increased insect insect wing joint kite less lever limbs long axis manner Marey membranous motion move movements muscles muscular natural wing nervures oblique oscillate pectoral fins pinion porpoise portions position posterior margin posterior or thin primary produced quadruped rapid reciprocating Red-legged Partridge remarkable resistance root rotating scapula screw secondary feathers shoulder-joint side spiral swimming tail thick margin tion trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking wave wing waved track weight wing descends
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