. The earth and its inhabitants .. . Eeptb 0 to 547 i'athoms. 547 to Fathoms. the lowest reached by the plummet, the Arctic Ocean possesses a fauna of many species. The explorations have but slightly increased the number of fishes known to science, but the museums have been enriched by many new echinoderms, some yerj curious and extremely beautiful, and Wyville Thomson alone has been enabled to describe 250 new species of molluscs. On the other hand, the limits of the marine flora have remained unchanged. Beyond 50 fathoms the algoo become rare, disappearing altogether at a depth of 200
. The earth and its inhabitants .. . Eeptb 0 to 547 i'athoms. 547 to Fathoms. the lowest reached by the plummet, the Arctic Ocean possesses a fauna of many species. The explorations have but slightly increased the number of fishes known to science, but the museums have been enriched by many new echinoderms, some yerj curious and extremely beautiful, and Wyville Thomson alone has been enabled to describe 250 new species of molluscs. On the other hand, the limits of the marine flora have remained unchanged. Beyond 50 fathoms the algoo become rare, disappearing altogether at a depth of 200 fathoms. The wealth of the fauna is all the greater in the northern seas of Euroj)e because their waters flow from different climatic regions. The currents of w^arm water form-ng the upper strata bring with them southern organisms, while the
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Keywords: ., bookcentury1800, bookdecade18, booksubjectgeography, bookyear1883
