Word: mammalia
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Dates: during 1889-1889
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...organic. The primary inorganic causes are the actions of winds, streams, currents, and glaciers. It is almost impossible to estimate the amount of work due to these causes, for every one of these inorganic means is almost constantly at work, Organic means are of those of insects, fishes, lower mammalia and man. The buoyancy of seeds differs greatly, and to the greater lightness of some seeds in a great measure is due their greater chances for dissemination; for if they are buoyant they will often be carried a great ways on the surface of the water, and take root...