Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 стор. |
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Сторінка 12
... compare the bones of the wing of a bird with the bones of the arm of a man , or those of the fore - leg of an elephant , or any other quadruped . In either case the bones are twisted upon themselves like the screw of an augur . The tail ...
... compare the bones of the wing of a bird with the bones of the arm of a man , or those of the fore - leg of an elephant , or any other quadruped . In either case the bones are twisted upon themselves like the screw of an augur . The tail ...
Сторінка 13
... , the preliminary effort may be dispensed with as in this case , the weight of the animal acting upon the inclined planes formed by the wings gets up the initial velocity . By comparing the flipper of the seal , sea - INTRODUCTION . 13.
... , the preliminary effort may be dispensed with as in this case , the weight of the animal acting upon the inclined planes formed by the wings gets up the initial velocity . By comparing the flipper of the seal , sea - INTRODUCTION . 13.
Сторінка 14
... comparing the flipper of the seal , sea - bear , and walrus with the fin and tail of the fish , whale , porpoise , etc .; and the wing of the penguin ( a bird which is incapable of flight , and can only swim and dive ) with the wing of ...
... comparing the flipper of the seal , sea - bear , and walrus with the fin and tail of the fish , whale , porpoise , etc .; and the wing of the penguin ( a bird which is incapable of flight , and can only swim and dive ) with the wing of ...
Сторінка 28
... Compare with Figs . 7 and 8. - Original . 19 j х FIG . 7 . FIG . 8 . FIG . 7. - Anterior extremity of elephant . Shows how the bones of the arm ( q ) , forearm ( q'x ) , and foot ( o ) , are twisted to form an osseous screw . Compare ...
... Compare with Figs . 7 and 8. - Original . 19 j х FIG . 7 . FIG . 8 . FIG . 7. - Anterior extremity of elephant . Shows how the bones of the arm ( q ) , forearm ( q'x ) , and foot ( o ) , are twisted to form an osseous screw . Compare ...
Сторінка 36
... Compare with figures from 10 to 14 , P. 34 . r Arm of bat ; d forearm of bat ; ef , n n n hand of bat . - Original . Although no lizard is at present known to fly , there can be little doubt that the extinct Pterodactyles ( which ...
... Compare with figures from 10 to 14 , P. 34 . r Arm of bat ; d forearm of bat ; ef , n n n hand of bat . - Original . Although no lizard is at present known to fly , there can be little doubt that the extinct Pterodactyles ( which ...
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Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Попередній перегляд недоступний - 2016 |
Загальні терміни та фрази
action aërial animals arms and legs arrangement artificial wave artificial wing ascends axes backwards bat and bird beetle biting surface blades body bones Borelli Compare with fig concave convex coracoid Crown 8vo depressed described downward dugong elastic ligaments elbow-joint elevating and propelling ellipse elytra extension extremities feet fins fish flexed flexible flexion flight flying foot gannet horizontal direction humerus inclined planes increased insect insect wing joint kite less lever limbs long axis manner Marey membranous motion move movements muscles muscular natural wing nervures oblique oscillate pectoral fins pinion porpoise portions position posterior margin posterior or thin primary produced quadruped rapid reciprocating Red-legged Partridge remarkable resistance root rotating scapula screw secondary feathers shoulder-joint side spiral swimming tail thick margin tion trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking wave wing waved track weight wing descends
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