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 35
Página viii
... elevated and depressed must move for- wards ,. The wing ascends when the body descends , and vice versâ , The wing acts upon yielding fulcra , The wing acts as a true kite both during the down and up strokes , Where the kite formed by ...
... elevated and depressed must move for- wards ,. The wing ascends when the body descends , and vice versâ , The wing acts upon yielding fulcra , The wing acts as a true kite both during the down and up strokes , Where the kite formed by ...
Página 25
... elevated or depressed . If the hand repre- sented a travelling surface which operated on the earth , the water , or the air , it is not difficult to understand how , when it was made to move by the action of the muscles of the arm , it ...
... elevated or depressed . If the hand repre- sented a travelling surface which operated on the earth , the water , or the air , it is not difficult to understand how , when it was made to move by the action of the muscles of the arm , it ...
Página 49
... elevated , it swings forward pendulum- fashion , and describes a curve whose convexity is directed towards the right side . When the left leg is flexed and elevated , it swings forward and describes a curve whose con- vexity is directed ...
... elevated , it swings forward pendulum- fashion , and describes a curve whose convexity is directed towards the right side . When the left leg is flexed and elevated , it swings forward and describes a curve whose con- vexity is directed ...
Página 50
... elevated , and advanced , it in like manner rotates upon the trunk , sup- ported in this instance by the extended right leg . The leg which is on the ground for the time being supplies the neces- sary lever , the ground the fulcrum ...
... elevated , and advanced , it in like manner rotates upon the trunk , sup- ported in this instance by the extended right leg . The leg which is on the ground for the time being supplies the neces- sary lever , the ground the fulcrum ...
Página 53
... elevated the weight of the body falls more and more on the centre of the foot and toes , the latter spreading out1 as in birds , to seize the ground and lever the trunk forward . It is in this movement that the wonderful mechanism of ...
... elevated the weight of the body falls more and more on the centre of the foot and toes , the latter spreading out1 as in birds , to seize the ground and lever the trunk forward . It is in this movement that the wonderful mechanism of ...
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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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