Archive image from page 367 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 depthsofoceange00murr Year: 1912 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 of
Archive image from page 367 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 depthsofoceange00murr Year: 1912 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
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