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The schools composing none but young and vigorous males, previously mentioned, offer a strong contrast to the harem schools. For while those female whales are characteristically timid, the young males, or forty-barrel-bulls, as they call them, are by far the most pugnacious of all Leviathans, and proverbially the most dangerous to encounter; excepting those wondrous grey-headed, grizzled whales, sometimes met, and these will fight you like grim fiends exasperated by a penal gout.