But little need be said here of demons of the Dark, for they are closely related to the phantasms of Delusion, of Winter, and others already described. Yet have they distinctive characters. As many as were the sunbeams were the shadows; every goddess of the Dawn (Ushas) cast her shadow; every Day was swallowed up by Night. This is the cavern where hide the treacherous Panis (fog) in Vedic mythology, they who steal and hide Indra's cows; this is the realm of Hades (the invisible); this is the cavern of the hag Thökk (dark) in Scandinavian mythology,--she who alone of all in the universe refused to weep for Baldur when he was shut up in Helheim, where he had been sent by the dart of his blind brother Hödr (darkness). In the cavern of Night sleep the Seven Sleepers of Ephesus, and Barbarossa, and all slumbering phantoms whose genius is the night-winged raven. Thorr, the Norse Hercules, once tried to lift a cat--as it seemed to him--from the ground; but it was the great mid-earth serpent which encircles the whole earth. Impossible feat as it was for Thorr--who got only one paw of the seeming cat off the ground--in that glassless and gasless era, invention has accomplished much in that direction; but the black Cat is still domiciled securely among idols of the mental cave. There is an Anglo-Saxon word, cof-godas (lit. cove-gods), employed as the equivalent of the Latin lares (the Penates, too, are interpreted as cof-godu, cofa signifying the inner recess of a house, penetrale). The word in German corresponding to this cofa, is koben; and from this Hildebrand conjectures kob-old to be derived. The latter part of the word he supposes to be walt (one who 'presides over,' e.g., Walter); so that the original form would be kob-walt. [165] Here, then, in the recesses of the household, among the least enlightened of its members--the menials, who still often neutralise the efforts of rational people to dispel the delusions of their children--the discredited deities and demons of the past found refuge, and through a little baptismal change of names are familiars of millions unto this day. In the words of the ancient Hebrew, 'they lay in their own houses prisoners of darkness, fettered with the bonds of a long night.' 'No power of the fire might give them light, neither could the bright flames of the stars lighten that horrible night.' [166] Well is it added, 'Fear is nothing else but a betraying of the succours which reason offereth,' a truth which finds ample illustration in the Kobolds. These imaginary beings were naturally associated with the dark recesses of mines. There they gave the name to our metal Cobalt. The value of Cobalt was not understood until the 17th century, and the metal was first obtained by the Swedish chemist Brandt in 1733. The miners had believed that the silver was stolen away by Kobolds, and these 'worthless' ores left in its place. Nickel had the like history, and is named after Old Nick. So long did those Beauties slumber in