File:Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen (1912) (14766944165).jpg

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Identifier: scienceofseaele00chal (find matches)
Title: Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen
Year: 1912 (1910s)
Authors: Challenger Society Fowler, G. Herbert (George Herbert), 1861-1940
Subjects: Oceanography Ocean
Publisher: London, John Murray
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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Fig. 207.—1, 2, 3, Pelagic Eggs (Diagrammatic) x 40 car,4, Demersal Egg of Goby (after Petersen) ; 5, DemersalEgg of Spotted Sucker (after Holt) x 30 ca. a. Auditory capsule.a.b. Air bladder. a.f. Attachment filaments. b. Blastoderm.e. Eye. n. Notochord.o.g. Oil globule.p.f. Pectoral fin. y. Yolk.z.v. Zona radiata. larv^: 323
Text Appearing After Image:
g ■H J3 O • !»* 324 FISHES AND FISHING ficial ioo or 50 fathoms of the ocean provide valuablerecords, but the lack of any net at once capable ofcapturing any but the youngest and smallest fishes,and of being opened and closed at ascertainable depths,leaves us practically in absolute ignorance of the in-habitants of the middle depths of the ocean. Series ofhauls taken at the same spot with similar nets fishedopen from different depths, may afford some evidenceof the horizon at which a species is most abundant. Some slight evidence on this subject has been derivedfrom closing tow nets ; but a tow net is ill adaptedfor the capture of adult fishes, and it is most unsafe toassume that such adults are to be found at the samehorizon as the larval and young forms of the speciesto which they belong. We believe that for the capture of such larval andyoung fishes as live in the upper waters of the ocean, atow net should be allowed to sink to about 100 fathoms,since existing records rather p

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Challenger Society;

Fowler, G. Herbert (George Herbert), 1861-1940
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28 July 2014



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