Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 páginas |
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Página 67
... causing the body of the fish to move in the line dcf . The explanation is apparently a satisfactory one ; but a careful analysis of the swimming of the living fish induces me to believe it is incorrect . According to this , the commonly ...
... causing the body of the fish to move in the line dcf . The explanation is apparently a satisfactory one ; but a careful analysis of the swimming of the living fish induces me to believe it is incorrect . According to this , the commonly ...
Página 72
... 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 spiral waves ; and it is worthy of ...
... 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 spiral waves ; and it is worthy of ...
Página 80
... causing his hands to work like sculls , so as to make figure - of - 8 loops in the water . This motion greatly resembles that made by the swimming wings of the penguin . It is most effective when the hands are turned slightly upwards ...
... causing his hands to work like sculls , so as to make figure - of - 8 loops in the water . This motion greatly resembles that made by the swimming wings of the penguin . It is most effective when the hands are turned slightly upwards ...
Página 91
... causing the feathers to roll down , and giving to the back of the wing , which in this case communi- cates the more effective stroke , the angle or obliquity neces- sary for sending the animal forward . This angle , I may observe ...
... causing the feathers to roll down , and giving to the back of the wing , which in this case communi- cates the more effective stroke , the angle or obliquity neces- sary for sending the animal forward . This angle , I may observe ...
Página 95
... causing the mass of the bird to pursue a more or less horizontal course . I offer this explanation of the action of the wing in and out of the water after repeated and careful observation in tame and wild birds , and , as I am aware ...
... causing the mass of the bird to pursue a more or less horizontal course . I offer this explanation of the action of the wing in and out of the water after repeated and careful observation in tame and wild birds , and , as I am aware ...
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Otras ediciones - Ver todas
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 angle animals arms and legs arrangement artificial wave artificial wing ascends backwards ball-and-socket joint bat and bird biped blades body bones Borelli Compare with fig concave convex Crown 8vo depressed described downward dugong 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 ostrich pectoral fins pinion porpoise portion position posterior margin posterior or thin produced quadruped rapid remarkable resistance right arm root rotation sail screw sea-bear shoulder-joint side speed spiral swimming tail thick margin tion travelling surfaces trunk twisting universal joint upward direction upwards and forwards velocity vertical vibrate walking waved track weight wing descends
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