File:Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874) (18011692459).jpg

Title: Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics
Identifier: animallocomotio00pett (find matches)
Year: 1874 (1870s)
Authors: Pettigrew, James Bell, 1834-1908
Subjects: Animal locomotion; Aeronautics
Publisher: New York, D. Appleton & company
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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Text Appearing Before Image:
144 ANIMAL LOCOMOTION. the wing of the bat and bird. The principle is, however, in both cases the same, the loops ultimately terminating in a waved track. The impulse is communicated to the insect wing at the heavy parts of the loops ahcdefghijhlmn of fig. 71 ; the waved tracks being indicated atj? 5 ^ of the same figure. The recoil obtained from the air is repre- sented at corresponding letters of fig. 72, the body of the Fig. n.
Text Appearing After Image:
Fig. 73. insect being carried along the curve indicated by the dotted line. The impulse is communicated to the wing of the bat and bird at the heavy part of the loops a b c d e f g h ij hlmno of fig. 73, the waved track being indicated p s t u v w oi this figure. When the horizontal speed attained is high, the wing is successively and rapidly brought into contact with innumerable columns of undisturbed air. It, consequently, is a matter of indifference whether the wing is carried at a high speed against undisturbed air, or whether it operates upon air

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