Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 páginas |
Dentro del libro
Resultados 1-5 de 42
Página viii
... descends , and vice versâ , The wing acts upon yielding fulcra , 154 156 159 165 · The wing acts as a true kite both during the down and up strokes , 165 Where the kite formed by the wing differs from the boy's kite , The angles formed ...
... descends , and vice versâ , The wing acts upon yielding fulcra , 154 156 159 165 · The wing acts as a true kite both during the down and up strokes , 165 Where the kite formed by the wing differs from the boy's kite , The angles formed ...
Página 12
... descends to make the up and down strokes , it rotates within the facettes or depressions situated on the scapula and ... descends it describes a downward and forward curve , and elevates the body in an upward and forward curve . When the ...
... descends to make the up and down strokes , it rotates within the facettes or depressions situated on the scapula and ... descends it describes a downward and forward curve , and elevates the body in an upward and forward curve . When the ...
Página 38
... the leaps ; the posterior extremities and tail forming a tripod of support . 4 The rabbit occasionally takes several short steps with the fore legs and pig . As a consequence these animals descend declivities with 38 ANIMAL LOCOMOTION .
... the leaps ; the posterior extremities and tail forming a tripod of support . 4 The rabbit occasionally takes several short steps with the fore legs and pig . As a consequence these animals descend declivities with 38 ANIMAL LOCOMOTION .
Página 39
... descend declivities with difficulty . They are best adapted for slightly ascending ground . In the giraffe the anterior extremities are longer and more powerful , comparatively , than the posterior ones , which is just the opposite ...
... descend declivities with difficulty . They are best adapted for slightly ascending ground . In the giraffe the anterior extremities are longer and more powerful , comparatively , than the posterior ones , which is just the opposite ...
Página 100
... descend below the body , account for the admitted absence of beating , and have no doubt originated the belief that the pectoral fins are merely passive organs . If , however , they do not act as true pinions within the limits ...
... descend below the body , account for the admitted absence of beating , and have no doubt originated the belief that the pectoral fins are merely passive organs . If , however , they do not act as true pinions within the limits ...
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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 albatross animal arms and legs arrangement artificial wave artificial wing ascends backwards ball-and-socket joint bat and bird beetle blades body bones Borelli centre Compare with fig concave convex coracoid Crown 8vo depressed described downward dugong elastic band elastic ligaments elbow-joint elevating and propelling ellipse elytra extended extremities feet fish flexed flexion flight flying foot force gannet glide horizontal direction humerus inclined planes increased insect insect wing joint kite less lever long axis manner Marey membranous motion move movements muscles muscular muscular system natural wing nervures oblique oscillate pectoral fins pinion porpoise portions position posterior margin posterior or thin produced quadruped rapid reciprocating remarkable resistance reverse rigid root rotation sail screw shoulder-joint side spiral swimming tail thick margin tion trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking waved track wedge weight wing descends
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