Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on AëronauticsD. Appleton, 1893 - 264 páginas |
Dentro del libro
Resultados 1-5 de 12
Página 15
... reverse their planes more or less completely at every stroke . That the wing describes a figure - of - 8 truck in space when the flying animal is artificially fixed . That the wing , when the flying animal is progressing at 1 " On the ...
... reverse their planes more or less completely at every stroke . That the wing describes a figure - of - 8 truck in space when the flying animal is artificially fixed . That the wing , when the flying animal is progressing at 1 " On the ...
Página 77
... reverse of what takes place in flying , the anterior or thick margins of the wings being invariably directed upwards . 2 The air - bladder is wanting in the dermopteri , plagiostomi , and pleuronec tidæ . - Owen , op . cit . p . 255 ...
... reverse of what takes place in flying , the anterior or thick margins of the wings being invariably directed upwards . 2 The air - bladder is wanting in the dermopteri , plagiostomi , and pleuronec tidæ . - Owen , op . cit . p . 255 ...
Página 91
... reverse of what occurs in the ordinary wing in aerial flight . In those extraordinary birds ( great auk and penguin ) the wing is covered with short , bristly - looking feathers , and is a mere rudiment and exceedingly rigid , the 1 In ...
... reverse of what occurs in the ordinary wing in aerial flight . In those extraordinary birds ( great auk and penguin ) the wing is covered with short , bristly - looking feathers , and is a mere rudiment and exceedingly rigid , the 1 In ...
Página 96
... reverse . The feet of the penguin entirely differ from those of the seal , in being worked separately , the foot of one side being flexed or drawn towards the body , FIG . 48. - Swan , in the act of swimming , the right foot being fully ...
... reverse . The feet of the penguin entirely differ from those of the seal , in being worked separately , the foot of one side being flexed or drawn towards the body , FIG . 48. - Swan , in the act of swimming , the right foot being fully ...
Página 109
... reverse stroke , the wing flies upwards in a double curve , kite - fashion , and elevates the weight k The more rapidly these movements are repeated , the more powerful the wing becomes , and the greater the weight it elevates . This ...
... reverse stroke , the wing flies upwards in a double curve , kite - fashion , and elevates the weight k The more rapidly these movements are repeated , the more powerful the wing becomes , and the greater the weight it elevates . This ...
Contenido
176 | |
182 | |
188 | |
193 | |
199 | |
205 | |
210 | |
219 | |
98 | |
110 | |
120 | |
132 | |
140 | |
146 | |
154 | |
165 | |
226 | |
233 | |
240 | |
246 | |
247 | |
253 | |
262 | |
263 | |
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