Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on AëronauticsD. Appleton, 1893 - 264 páginas |
Dentro del libro
Resultados 1-5 de 61
Página xvi
... downwards , the fish ( if it be not speci- ally provided with a swimming bladder ) sinks , and the bird gravitates of necessity . There is a sudden subsiding and ces- sation of motion in either case , but the quadruped and fish have no ...
... downwards , the fish ( if it be not speci- ally provided with a swimming bladder ) sinks , and the bird gravitates of necessity . There is a sudden subsiding and ces- sation of motion in either case , but the quadruped and fish have no ...
Página 9
... downwards ) presses upon the inclined planes or kites formed by the wings in such a manner as to become converted directly into a propelling , and indirectly into a buoying or supporting power . This can be proved by experiment , as I ...
... downwards ) presses upon the inclined planes or kites formed by the wings in such a manner as to become converted directly into a propelling , and indirectly into a buoying or supporting power . This can be proved by experiment , as I ...
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 33
... downwards or vertically , instead of from side to side . The spinal column is jointed as in the fish , with this difference , that the vertebræ ( especially towards the tail ) form the rounded prominences or ball , the meniscus or cup ...
... downwards or vertically , instead of from side to side . The spinal column is jointed as in the fish , with this difference , that the vertebræ ( especially towards the tail ) form the rounded prominences or ball , the meniscus or cup ...
Página 74
... downwards , as in the foregoing mammals , but in swimming it is made to In this curious mammal the anterior extremities are more developed than in the manatee and porpoise , and resemble those found in the seal , sea - bear , and walrus ...
... downwards , as in the foregoing mammals , but in swimming it is made to In this curious mammal the anterior extremities are more developed than in the manatee and porpoise , and resemble those found in the seal , sea - bear , and walrus ...
Contenido
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Términos y frases comunes
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