Abstract

The distribution of Tardigrades is worldwide. All of them are hygrophilous, but some of them are of necessity restricted to life in the water and are distinguished as Marine or Fresh Water Tardigrades. These Waterbears are found in all parts of the globe, in the Arctic as well as in the Antarctic regions, among the mosses and lichens collected at a height of 6,000 m., and among water plants. The general distribution of the animalcules is caused by the Anabiosis and the wind which carries these minute forms of animal life into every nook of our planet. Tropical countries do not seem favorable (as far as number of individuals and species are concerned) to productive Faunas of Tardigrades. The largest number of these animalcules found in a bed of dried moss was 22,000 per gm.

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