Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsD. Appleton, 1885 - 264 páginas |
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Página 2
... less interesting than organic ones . The disaffected growl of the thunder , and the ghastly lightning flash , scorching and withering whatever it touches , forcibly remind us that everything above , below , and around is in motion . Of ...
... less interesting than organic ones . The disaffected growl of the thunder , and the ghastly lightning flash , scorching and withering whatever it touches , forcibly remind us that everything above , below , and around is in motion . Of ...
Página 7
... less dense . It , however , does not essentially differ from the other two , and I shall be able to show in the following pages , that the materials and forces employed in flight are literally the same as those employed in walking and ...
... less dense . It , however , does not essentially differ from the other two , and I shall be able to show in the following pages , that the materials and forces employed in flight are literally the same as those employed in walking and ...
Página 8
... less dense and the fulcrum more movable . Thus terrestrial animals have smaller travelling surfaces than amphibia , amphibia than fishes , and fishes than insects , bats , and birds . Another point to be studied in connexion with ...
... less dense and the fulcrum more movable . Thus terrestrial animals have smaller travelling surfaces than amphibia , amphibia than fishes , and fishes than insects , bats , and birds . Another point to be studied in connexion with ...
Página 10
... less symmetrical ellipse . If the curves formed by the legs and arms respectively be united , they form waved lines which intersect at every step . This arises from the fact that the curves formed by the right and left legs are found ...
... less symmetrical ellipse . If the curves formed by the legs and arms respectively be united , they form waved lines which intersect at every step . This arises from the fact that the curves formed by the right and left legs are found ...
Página 11
... less than two , a caudal and a cephalic one . They may and do exceed this number in the long - bodied fishes . The tail of the fish is made to vibrate pendulum fashion on either side of the spine , when it is lashed to and fro in the ...
... less than two , a caudal and a cephalic one . They may and do exceed this number in the long - bodied fishes . The tail of the fish is made to vibrate pendulum fashion on either side of the spine , when it is lashed to and fro in the ...
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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