Mary's Isle, one of the Scilly group.[E] The Bryn-yr-Ellyllon,[F] or Fairy-hill, near Mold, may be cited as a similar instance in Wales, which must again be referred to. [Footnote A: _Testimony of Tradition_, p. 142.] [Footnote B: _Op. cit._, p. 56.] [Footnote C: _Folk Lore_, ii. 115.] [Footnote D: _Folk Lore Record_, i. 16 and 28.] [Footnote E: _Ritson_, p. 62.] [Footnote F: Dawkins, _Early Man in Britain_, p. 433.] The pages of Keightley's work contain instances of hill-inhabiting fairies in Scandinavia, Denmark, the Isle of Rugen, Iceland, Germany, and Switzerland. It is not only in Europe, however, that this form of habitation is to be met with; we find it also in America. The Sioux have a curious superstition respecting a mound near the mouth of the Whitestone River, which they call the Mountain of Little People or Little Spirits; they believe that it is the abode of little devils in the human form, of about eighteen inches high and with remarkably large heads; they are armed with sharp arrows, in the use of which they are very skilful. These little spirits are always on the watch to kill those who should have the hardihood to approach their residence. The tradition is that many have suffered from their malice, and that, among others, three Maha Indians fell a sacrifice to them a few years since. This has inspired all the neighbouring nations, Sioux, Mahas, and Ottoes, with such terror, that no consideration could tempt them to visit the hill.[A] [Footnote A: Lewis and Clarke, _Travels to the Source of the Missouri River._ Quoted in _Flint Chips_, p. 346. The tale is also given in _Folk Lore, Oriental and American_ (Gibbings & Co.), p. 45.] The mounds or hills inhabited by the fairies are, however, of very diverse kinds, as we discover when we attempt to analyse their actual nature. In some cases they are undoubtedly natural elevations. Speaking of the exploration of the Isle of Unst, Hunt[A] says that the term "Fairy Knowe" is applied alike to artificial and to natural mounds. "We visited," he states, "two 'Fairy Knowes' in the side of the hill near the turning of the road from Reay Wick to Safester, and found that these wonderful relics were merely natural formations. The workmen were soon convinced of this, and our digging had the effect of proving to them that the fairies had nothing to do with at least two of these hillocks." The same may surely be said of that favourite and important fairy haunt Tomnahurich, near Inverness, though Mr. MacRitchie seems to think that an investigation, were such possible, of its interior, might lead to a different explanation. [Footnote A: _Anthrop. Mems._, ii. 294.]