. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. 6?8 DEPTHS OF THE OCEAN CHAP. Our contribution to the knowledge of this subject consists mainly in determining the vertical distribution of the silvery. Fig. 495. Vinciguerria lucetia, Garm. Nat. size, 4 cm. luminous Sternoptychidae and Stomiatidae more exactly than had previously been done (see Fig. 478, p. 629, showing the vertical distribution of some of the most peculiar luminous fishes). Fig
. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. 6?8 DEPTHS OF THE OCEAN CHAP. Our contribution to the knowledge of this subject consists mainly in determining the vertical distribution of the silvery. Fig. 495. Vinciguerria lucetia, Garm. Nat. size, 4 cm. luminous Sternoptychidae and Stomiatidae more exactly than had previously been done (see Fig. 478, p. 629, showing the vertical distribution of some of the most peculiar luminous fishes). Fig. 495 represents one of these, Vinci- guerria lucetia with its numerous power- ful light-organs, the structure of which, according to Brauer, is shown in Fig. 496, where we see the black pigment behind the reflector, the gland, and the lens (see also Fig. 493, 7, which shows a section through the light-organ in Cyclo- thone). Splendid light- organs have also fig. 496. been discovered in Light-organ of Vinciguerria lucetia, Garni., from ventral series ISGUldS and Chun of body (about -\-). dr, glandular cells ; /, lens ; r, re- V _• m i i flector ;/, black pigment. (From Brauer.) naS aeSCriDeCt tnem in many species (see Fig. 434, p. 590). These forms are entirely pelagic. The Octopoda, being bottom animals, possess no light-organs. In the large group of squids light-organs have also been found in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Murray, John, Sir, 1841-1914; Hjort, Johan, 1869-. London Macmillan
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