Some Fairies dwell in the mines, and seem to imitate the actions of the workmen; but never unless insulted, do them harm, but rather are of semce to them. In certain silver and lead mines, in Wales, nothing is more common than these subterraneous spirits, called Knockers, who good naturedly point out where there is a rich vein. These Knockers are sometimes visible. Mr. John Lewis, iq his correspondence with Mr.Baxter, describes them as little-statured, and about half a yard long; and adds, that at this very instant. there are miners on a discovery of a vein of metal on his own lands, and that’two of them are ready to make oath they heard these Knockers in the day-time. Grose