Archive image from page 183 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 Fig. Haliomma ivyvillei, Haeckel. From the surface (magnified). Animal remains in marine deposits. Siliceous remains. nourishment they require therein. The excreta of these animals are associated with a certain amount of slimy albuminoid matter, and in cer- tain localities these excreta become so numerous that the term ' c


Archive image from page 183 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 Fig. Haliomma ivyvillei, Haeckel. From the surface (magnified). Animal remains in marine deposits. Siliceous remains. nourishment they require therein. The excreta of these animals are associated with a certain amount of slimy albuminoid matter, and in cer- tain localities these excreta become so numerous that the term ' coprolitic mud' has been proposed for the deposits containing them. The animal remains found in deep- sea deposits are either siliceous or calcareous, those of a chitinous char- acter being extremely rare, if not entirely absent. The siliceous remains of radiolaria (see Figs, no to 117) and the spicules of siliceous sponges are widely distributed over the ocean- floor, the radiolarian skeletons being so abundant in certain regions as to make up a very large part of the deposit, which Fig. 115. Lithoptera darwinii, Haeckel. From the surface (magnified).


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