Students of comparative folk-lore class all such manifestations under a common head, whether related of fairies or spirit mediums. They trace their origin to the same source whence come the notions of propitiating the fairies by euphemistic names. The use of such names as Jehovah, the Almighty, the Supreme Being, etc., for the terrible and avenging God of the Jewish theology, being originally an endeavour to avoid pronouncing the name of God, it is easy to see the connection with the exorcising power of that name upon all evil spirits, such as fairies are usually held to be. Here also, it is thought, is presented the ultimate source of that horror of profane language which prevails among the Puritanic peoples of England and America. The name of the devil is similarly provided with euphemisms, some of which--such as the Old Boy--are not of a sort to offend that personage's ears; and until recently the word devil was deemed almost as offensive as the word God, when profanely used. FOOTNOTES: [55] Rev. Robert Ellis, in 'Manion Hynafiaethol.' (Treherbert, 1873.) [56] 'Hamlet,' Act I., Sc. 1. [57] Brand, 'Popular Antiquities,' ii., 31. II. A popular protection from the encroachments of fairies is the eithin, or prickly furze, common in Wales. It is believed that the fairies cannot penetrate a fence or hedge composed of this thorny shrub. An account illustrating this, and otherwise curious in its details, was given in 1871 by a prominent resident of Anglesea:[58] 'One day, some thirty years ago, Mrs. Stanley went to one of the old houses to see an old woman she often visited. It was a wretched hovel; so unusually dark when she opened the door, that she called to old Betty Griffith, but getting no answer she entered the room. A little tiny window of one pane of glass at the further side of the room gave a feeble light. A few cinders alight in the miserable grate also gave a glimmer of light, which enabled her to see where the bed used to be, in a recess. To her surprise she saw it entirely shut out by a barricade of thick gorse, so closely packed and piled up that no bed was to be seen. Again she called Betty Griffith; no response came. She looked round the wretched room; the only symptom of life was a plant of the Wandering Jew (_Saxifraga tricolor_), so called by the poor people, and dearly loved to grace their windows. It was planted in a broken jar or teapot on the window, trailing its long tendrils around, with here and there a new formed plant seeming to derive sustenance from the air alone. As she stood, struck with the miserable poverty of the human abode, a faint sigh came from behind the gorse. She went close and said, "Betty, where are you?" Betty instantly recognised her voice, and ventured to turn herself round from the wall. Mrs. Stanley then made a small opening in the gorse barricade, which sadly pricked her fingers; she saw Betty in her bed and asked her, "Are you not well? are you cold, that you are so closed up?" "Cold! no.