Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on AëronauticsD. Appleton, 1893 - 264 páginas |
Dentro del libro
Resultados 1-5 de 19
Página 22
... concave within , and strengthened by ridges running across their discs , as in the scapular and iliac bones ; an arrangement which affords large surfaces for the attachment of the powerful muscles of locomotion . The bones of birds in ...
... concave within , and strengthened by ridges running across their discs , as in the scapular and iliac bones ; an arrangement which affords large surfaces for the attachment of the powerful muscles of locomotion . The bones of birds in ...
Página 36
... concave , and so resemble the wings of beetles and heavy - bodied short - winged birds . The bones of the arm ( r ) , forearm ( d ) , and hand ( n , n , n ) of the bat ( fig . 17 ) support the anterior or thick margin and the extremity ...
... concave , and so resemble the wings of beetles and heavy - bodied short - winged birds . The bones of the arm ( r ) , forearm ( d ) , and hand ( n , n , n ) of the bat ( fig . 17 ) support the anterior or thick margin and the extremity ...
Página 38
... concave disc at the end of each toe , for climbing and adhering to the bark and leaves of trees . Some toads , on the other hand , are enabled , by peculiar tubercles or projections from the palm or sole , to clamber up old walls . " 1 ...
... concave disc at the end of each toe , for climbing and adhering to the bark and leaves of trees . Some toads , on the other hand , are enabled , by peculiar tubercles or projections from the palm or sole , to clamber up old walls . " 1 ...
Página 67
... concave , or biting surface being directed outwards . When , on the other hand , the tail is extended to make what is termed the effective or forward stroke , it is urged towards the ima- ginary line , its convex or non - biting surface ...
... concave , or biting surface being directed outwards . When , on the other hand , the tail is extended to make what is termed the effective or forward stroke , it is urged towards the ima- ginary line , its convex or non - biting surface ...
Página 68
... concave or biting surface ( s ) during extension ( the forward or effective stroke of authors ) when the tail is being forced with increased energy towards the axis of motion ( a b ) ; the resistance occasioned by a concave surface ...
... concave or biting surface ( s ) during extension ( the forward or effective stroke of authors ) when the tail is being forced with increased energy towards the axis of motion ( a b ) ; the resistance occasioned by a concave surface ...
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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