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Naturalists have given names to the nineteen varieties, with great
force of description, sometimes in           to their place of resort,
sometimes as to their peculiar properties, and sometimes in reference
to their relative size; thus we have the Greenland, Chilian, and Aus-
tralian seals; the Lion, Elephant, and Tortoise seal; the great and
little seal; and the Monk-hooded and Maned seal:--all these have
distinctive characters, but the great features are the same.