Archive image from page 615 of The depths of the ocean. 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 depthsofoceangen00murr Year: 1912 58o DEPTHS OF THE OCEAN surface of the animals and facilitate their floating, while in northern waters the species are devoid of such appendages. It is thus interesting to compare the widespread species Calanus finmarchicus (Fig. 416), which occurs in greatest abundance in boreal areas, with the tropical Augaptiliisfiliger
Archive image from page 615 of The depths of the ocean. 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 depthsofoceangen00murr Year: 1912 58o DEPTHS OF THE OCEAN surface of the animals and facilitate their floating, while in northern waters the species are devoid of such appendages. It is thus interesting to compare the widespread species Calanus finmarchicus (Fig. 416), which occurs in greatest abundance in boreal areas, with the tropical Augaptiliisfiligeriis (Fig. 417), which has elaborate appendages, reminding one of peacocks' feathers. We find the same difference between Oithona plumifera and Oithona similis, and between EiicJiczta marina and Euclmta norvegica (Fig. 418). We find in these cases a perfect analogy with what Gran has described among the peridineae in Chapter VI. ; for instance, Ceratiuni platycorne (see Fig. 228, p. 324) in warm water en- FiG. 417. Augaptilusfiligerus, Claus. (After Zacharias, from Steuer.)
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Keywords: 1900, 1910, 1912, _michael_sars_north_atlantic_deep_sea_expedition_191, appell_f_jakob_johan_adolf_1857_, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, drawing, gran_h_h_haakon_hasberg_1870_, helland_hansen_bj_rn_1877_, historical, history, illustration, image, london_macmillan, murray_john_sir_1841_1914, north_atlantic_ocean, oceanography, page, picture, print, reference, vintage
