Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on AëronauticsD. Appleton, 1893 - 264 páginas |
No interior do livro
Resultados 1-5 de 7
Página viii
... Elytra or wing cases and membranous wings ; their shape and uses , THE WINGS OF BATS . The bones of the wing of the bat ; the spiral configuration of their articular surfaces , • THE WINGS OF BIRDS . 170 176 The bones of the wing of the ...
... Elytra or wing cases and membranous wings ; their shape and uses , THE WINGS OF BATS . The bones of the wing of the bat ; the spiral configuration of their articular surfaces , • THE WINGS OF BIRDS . 170 176 The bones of the wing of the ...
Página 170
... Elytra or Wing - cases , Membranous Wings - their shape and uses . The wings of insects consist either of one or two pairs . When two pairs are present , they are divided into an ante- rior or upper pair , and a posterior or under pair ...
... Elytra or Wing - cases , Membranous Wings - their shape and uses . The wings of insects consist either of one or two pairs . When two pairs are present , they are divided into an ante- rior or upper pair , and a posterior or under pair ...
Página 171
... elytra are twisted upon themselves after the manner of wings . FIG . 89 . FIG . 90 . FIG . 83. the Centaur Beetle ( Augusoma centaurus ) , seen from above . Shows elytra ( r ) and meinbranous wings ( e ) in the extended state . The ...
... elytra are twisted upon themselves after the manner of wings . FIG . 89 . FIG . 90 . FIG . 83. the Centaur Beetle ( Augusoma centaurus ) , seen from above . Shows elytra ( r ) and meinbranous wings ( e ) in the extended state . The ...
Página 172
... elytra.1 In the locusts the nervures diverge from a common centre , after the manner of a fan , so that by their aid the wing is crushed up or expanded as required ; whilst in the dragon - fly , 1 The wings of the May - fly are folded ...
... elytra.1 In the locusts the nervures diverge from a common centre , after the manner of a fan , so that by their aid the wing is crushed up or expanded as required ; whilst in the dragon - fly , 1 The wings of the May - fly are folded ...
Página 187
... elytra are moved equally and simultaneously . Thus , when it is elevated , it carries with it the internal side of the base of the wings with which it is articulated , from which ensues the depression of the external side of the wing ...
... elytra are moved equally and simultaneously . Thus , when it is elevated , it carries with it the internal side of the base of the wings with which it is articulated , from which ensues the depression of the external side of the wing ...
Índice
176 | |
182 | |
188 | |
193 | |
199 | |
205 | |
210 | |
219 | |
98 | |
110 | |
120 | |
132 | |
140 | |
146 | |
154 | |
165 | |
226 | |
233 | |
240 | |
246 | |
247 | |
253 | |
262 | |
263 | |
Palavras e frases frequentes
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