The Sidhe cannot make themselves visible to all. They are shape-changers; they can grow small or grow large, they can take what shape they choose; they appear as men or women wearing clothes of many colours, of today or of some old forgotten fashion, or they are seen as bird or beast, or as a barrel or a flock of wool. They go by us in a cloud of dust; they are as many as the blades of grass. They are everywhere; their home is in the forths, the lisses, the ancient round grass-grown mounds. There are thorn-bushes they gather near and protect; if they have a mind for a house like our own they will build it up in a moment. They will remake a stone castle, battered by Cromwell's men, if it takes their fancy, filling it with noise and lights. Their own country is Tir-nan-Og--the Country of the Young. It is under the ground or under the sea, or it may not be far from any of us. As to their food, they will use common things left for them on the hearth or outside the threshold, cold potatoes it may be, or a cup of water or of milk. But for their feasts they choose the best of all sorts, taking it from the solid world, leaving some worthless likeness in its place; when they rob the potatoes from the ridges the diggers find but rottenness and decay; they take the strength from the meat in the pot, so that when put on the plates it does not nourish. They will not touch salt; there is danger to them in it. They will go to good cellars to bring away the wine. Fighting is heard among them, and music that is more beautiful than any of this world; they are seen dancing on the rocks; they are often seen playing at the hurling, hitting balls towards the goal. In each one of their households there is a queen, and she has more power than the rest; but the greatest power belongs to their fool, the Fool of the Forth, Amadan-na-Briona. He is their strongest, the most wicked, the most deadly; there is no cure for any one he has struck.