The old Welsh bards were accustomed to sing their belief that King Arthur was not dead, but conveyed away by the fairies into some charmed spot where he should remain awhile, and then return again to reign with undiminished power. These wondrous inhabitants of Elf-land--these Fays, Fairies, Elves, Little Folk, Pixies, Hobgoblins, Kobolds, Dwarfs, Pigmies, Gnomes, and Trolls are all more or less associated with the plant kingdom. They make their habitations in the leafy branches of trees, or dwell in the greater seclusion of their hollow trunks; they dally and gambol among opening buds and nodding blossoms; they hide among blushing Roses and fragrant shrubs; they dance amid the Buttercups, Daisies, and Meadow-Sweet of the grassy meads; and, as Shakspeare says, they “use flowers for their charactery.” Grimm tells us that in Germany the Elves are fond of inhabiting Oak trees, the holes in the trunks of which are deemed by the people to be utilised by the Fairies as means of entry and exit. A similar belief is entertained by the Hindus, who consider holes in trees as doors by which the inhabiting spirit passes in and out. German elves are also fond of frequenting Elder-trees. The Esthonians believe that during a thunder-storm, and in order to escape from the lightning, the timorous Elves burrow several feet beneath the roots of the trees they inhabit. As a rule these forest Elves are good-natured: if they are not offended, not only will they abstain from harming men, but they will even do them a good turn, and teach them some of the mysteries of nature, of which they possess the secret. The Elves were in former days thought to practise works of mercy in the woods, and a certain sympathetic affinity with trees became thus propagated in the popular faith. The country-folk were careful not to offend the trees that were inhabited by Fairies, and they never sought to surprise the Elfin people in their mysterious retreats, for they dreaded the power of these invisible creatures to cause ill-luck or some unfortunate malady to fall on those against whom they had a spite. Even deaths were sometimes laid at their door.