Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 стор. |
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Сторінка vii
... horizontal flight , 112 Weight , momentum and power to a certain extent synonymous in flight , 114 Air - cells in insects and birds not necessary to flight , 115 How balancing is effected in flight , 118 Rapidity of wing movements ...
... horizontal flight , 112 Weight , momentum and power to a certain extent synonymous in flight , 114 Air - cells in insects and birds not necessary to flight , 115 How balancing is effected in flight , 118 Rapidity of wing movements ...
Сторінка xii
... horizontal track , 108 Feathers and cork flying forward , 112 Diagram illustrating how wings obtain their high speed , 120 Butterfly with large wings , 124 Beetle with small wings , 125 Partridge with small wings ; Heron with large ...
... horizontal track , 108 Feathers and cork flying forward , 112 Diagram illustrating how wings obtain their high speed , 120 Butterfly with large wings , 124 Beetle with small wings , 125 Partridge with small wings ; Heron with large ...
Сторінка 6
... horizontal burrows which they form in the banks . Although resembling the perfect insect in several respects , they differ materially in having longer antennæ , in wanting ocelli , and in possessing horn - like mandibles ; the abdomen ...
... horizontal burrows which they form in the banks . Although resembling the perfect insect in several respects , they differ materially in having longer antennæ , in wanting ocelli , and in possessing horn - like mandibles ; the abdomen ...
Сторінка 15
... " - Transactions of the Linnean Society , vol . xxvi . 3 " On the Physiology of Wings . " - Transactions of the Royal Society of Edinburgh , vol . xxvi . a high speed in a horizontal direction , describes a INTRODUCTION . 15.
... " - Transactions of the Linnean Society , vol . xxvi . 3 " On the Physiology of Wings . " - Transactions of the Royal Society of Edinburgh , vol . xxvi . a high speed in a horizontal direction , describes a INTRODUCTION . 15.
Сторінка 16
... horizontal direction , describes a looped and then a waved track , from the fact that the figure of 8 is gradually opened out or unravelled as the animal advances . That the wing acts after the manner of a kite , both during the down ...
... horizontal direction , describes a looped and then a waved track , from the fact that the figure of 8 is gradually opened out or unravelled as the animal advances . That the wing acts after the manner of a kite , both during the down ...
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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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