. 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. DEPTHS OF THE OCEAN CHAP. Chun large net. Prince of Monaco's pelagic trawl. 36 ; We have found that if the appliance is sent down open to a considerable depth, immediately closed and hauled in again, it fails to capture anything, thus proving that vertical appliances need not be closed while being lowered. For studying the vertical distribution of larger organisms Chun used during the &
. 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. DEPTHS OF THE OCEAN CHAP. Chun large net. Prince of Monaco's pelagic trawl. 36 ; We have found that if the appliance is sent down open to a considerable depth, immediately closed and hauled in again, it fails to capture anything, thus proving that vertical appliances need not be closed while being lowered. For studying the vertical distribution of larger organisms Chun used during the " Valdivia " Expedition a large silk net, 4 metres in length (Fig. 16). By lowering it to different depths. Fig. 17.—Monaco's Pelagic Trawl. (From Steuer.) and comparing the catches so obtained, he could determine at what particular depths the animals lived, and he succeeded in collecting by this means valuable data as to pelagic deep- water forms. The Prince of Monaco has also added largely to our knowledge of the habitats of the larger pelagic organisms by means of his pelagic trawl (Fig. 17), which is designed for Petersen young-fish 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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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1912
