. 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. 30 DEPTHS OF THE OCEAN Coccolitho- phoridoe. • Besides these highly-organised forms, which I have given as instances, the peridineae include many with a far more simple structure. There are, especially in the samples collected by means of the centrifuge, numerous series of small forms, both coloured and colour- less, and often with very poorly de- veloped cell-walls. These, too, have already got
. 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. 30 DEPTHS OF THE OCEAN Coccolitho- phoridoe. • Besides these highly-organised forms, which I have given as instances, the peridineae include many with a far more simple structure. There are, especially in the samples collected by means of the centrifuge, numerous series of small forms, both coloured and colour- less, and often with very poorly de- veloped cell-walls. These, too, have already got or will shortly be given names, although many of them are prob- ably nothing more than development- stages of the larger forms. We can recognise the whole series by their char- acteristic ring-furrow, so that we are seldom left in doubt as to the classifica- tion of even the simplest types. Still a fig. 235. good deal remains to be done before we Ornithocercus MAGNIFICUS. & - . . . with brown flagellate cells in the can claim a thorough acquaintance with space between the ring-borders their development-history and systematic <±m. (Schiut.) r J J arrangement. The third series of pelagic algae consists of brown flagellates, the chief place amongst which is occupied by calcareous flagellates or coccolithophoridae (see Fig. 239). Their cells are. ! s -«5jo ,-• / m :i. 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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