It is obvious that this principle may be extended from individuals to entire tribes. The Cimmerians were regarded as dwelling in a land allied with hell. In the legend of the Alhambra, as told by Washington Irving, the astrologer warns the Moorish king that the beautiful damsel is no doubt one of those Gothic sorceresses of whom they have heard so much. Although, as we have seen, England was regarded on the Continent as an island of demons because of its northern latitude, probably some of its tribes were of a character dangerous enough to prolong the superstition. The nightmare elves were believed to come from England, and to hurry away through the keyholes at daybreak, saying 'The bells are calling in England.' [119] Visigoth probably left us our word bigot; and 'Goths and Vandals' sometimes designate English roughs, as 'Turks' those of Constantinople. Herodotus says the Scythians of the Black Sea regarded the Neurians as wizards, who transformed themselves into wolves for a few days annually; but the Scythians themselves are said by Herodotus to have sprung from a monster, half-woman half-serpent; and possibly the association of the Scotch with the Scythians by the Germans, who called them both Scutten, had something to do with the uncanny character ascribed to the British Isles. Sir Walter Raleigh described the Red Men of America as gigantic monsters. 'Red Devils' is still the pioneer's epithet for them in the Far West. The hairy Dukes of Esau were connected with the goat, and demonised as Edom; and Ishmael was not believed much better by the more peaceful Semitic tribes. Such notions are akin to those which many now have of the Thugs and Bashi-Bazouks, and are too uniform and natural to tax much the ingenuity of Comparative Mythology. Underlying many of the legends of giants and dwarfs may be found a similar demonologic formation. A principle of natural selection would explain the existence of tribes, which, though of small stature, are able to hold their own against the larger and more powerful by their superior cunning. That such equalisation of apparently unequal forces has been known in pre-historic ages may be gathered from many fables. Before Bali, the monarch already mentioned, whose power alarmed the gods themselves, Vishnu appeared as a dwarf, asking only so much land as he could measure with three steps; the apparently ridiculous request granted, the god strode over the whole earth with two steps and brought his third on the head of Bali. In Scandinavian fable we have the young giantess coming to her mother with the plough and ploughman in her apron, which she had picked up in the field. To her child's inquiry, 'What sort of beetle is this I found wriggling in the sand?' the giantess replies, 'Go put it back in the place where thou hast found it. We must be gone out of this land, for these little people will dwell in it.'