Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsD. Appleton, 1885 - 264 páginas |
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Página 3
... rapid and beautiful than the movements of either the quadruped on the land or the fish in the water . What , in fact , secures the position of the quadruped on the land , the fish in the water , and the bird in the air , is the life ...
... rapid and beautiful than the movements of either the quadruped on the land or the fish in the water . What , in fact , secures the position of the quadruped on the land , the fish in the water , and the bird in the air , is the life ...
Página 8
... rapid than either walking , running , or swimming . The flying animal receives support from the air by increasing the size of its travelling surfaces , which act after the manner of twisted inclined planes or kites . When an insect , a ...
... rapid than either walking , running , or swimming . The flying animal receives support from the air by increasing the size of its travelling surfaces , which act after the manner of twisted inclined planes or kites . When an insect , a ...
Página 14
... rapid reciprocating move- ments , operate upon the water and air by a wedge - action after the manner of twisted or double inclined planes . The twisted inclined planes act upon the air and water by means of curved surfaces , the curved ...
... rapid reciprocating move- ments , operate upon the water and air by a wedge - action after the manner of twisted or double inclined planes . The twisted inclined planes act upon the air and water by means of curved surfaces , the curved ...
Página 37
... is a double purpose - the limited area pre- sented to the ground affording the animal sufficient support and leverage , and enabling it to disentangle its feet with the utmost facility , it being a condition in rapid terrestrial 18 19.
... is a double purpose - the limited area pre- sented to the ground affording the animal sufficient support and leverage , and enabling it to disentangle its feet with the utmost facility , it being a condition in rapid terrestrial 18 19.
Página 38
... rapid terrestrial pro- gression that the points presented to the earth be few in number and limited in extent , as this approximates the feet of animals most closely to the wheel in mechanics , where the surface in contact with the ...
... rapid terrestrial pro- gression that the points presented to the earth be few in number and limited in extent , as this approximates the feet of animals most closely to the wheel in mechanics , where the surface in contact with the ...
Outras edições - Ver tudo
Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1882 |
Animal Locomotion, Or, Walking, Swimming, and Flying: With a Dissertation on ... James Bell Pettigrew Visualização integral - 1874 |
Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1893 |
Palavras e frases frequentes
action aërial albatross angle animals arms and legs arrangement artificial wave artificial wing ascends backwards bat and bird biped blades body bones Borelli Compare with fig concave convex 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 horizontal direction humerus inclined planes increased insect insect wing joint kite less levers limbs locomotion long axis manner Marey motion move movements muscles muscular muscular system natural wing nervures oblique oscillate pectoral pectoral fins pinion porpoise portion position posterior margin posterior or thin produced quadruped rapidity remarkable resistance reverse 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 vertical direction vibrate walking waved track weight wing descends