Annual Report of the Board of Regents of the Smithsonian Institution Volume 1883

 
9781154189377: Annual Report of the Board of Regents of the Smithsonian Institution Volume 1883
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1881 edition. Excerpt: ...such occasions than when there was a moderate wind"; (2) that the flapping movement is quite regular and very rapid; and (3) that this movement" may be continued" for the whole or a part of the flight, but is generally discontinued after the first few rods, and the course completed by a pure skimming or sailing movement." It is further claimed that " the course of the flight is generally in a straight or curved line," but is sometimes abruptly changed, " apparently by the aid of the tail," or rather the lower lobe of the caudal flu. The average flight, it is thought, "does not perhaps exceed fifteen seconds, nor extend above four or five hundred feet"; the longest observed " lasted not less than forty seconds, and its extent was undoubtedly over eight hundred feet, and may have exceeded twelve hundred feet." 'Mobius (Carl). Die Bewegungen der fliegenden Fische durch die luff. ZeittcMft fir vifttntckaftliche Zoologie, vol. xxx; Supplement, p. 343. (Whitman (C. O.)-Do Flying Fish fly f Am. JVa., vol. xiv, pp. 641-654. S. Mis. 31 24 Prof. D. S. Jordan also carefully examined the flight of an Exoccetus (E, californicus) in the waters of Southern California. He observed it best " in early morning when both air and water were free from motion." " On rising from the water the movements of the tail are continued for some seconds until the whole body is out of water. While the tail is in motion the pectorals are in a state of very rapid vibration, and the ventrals are folded. When the action of the tail ceases, the pectorals and ventrals are spread, and, as far as we can see, held at rest. When the fish begins to fall, the tail touches the water and the motion of the pectorals recommences, and it is enabled to resume its flight, which it finally...

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