The resemblance of this tale to many he has encountered will at once be noted by the student of comparative folk-lore. He will also observe that it trenches on the domain of another class in my own enumeration, viz., that of the Bwbach, or household fairy. This is the stone over which one is constantly stumbling in this field of scientific research. Mr. Baring-Gould's idea that all household tales are reducible to a primeval root (in the same or a similar manner that we trace words to their roots), though most ingeniously illustrated by him, is constantly involved in trouble of the sort mentioned. He encounters the obstacle which lies in the path of all who walk this way. His roots sometimes get inextricably gnarled and intertwisted with each other. But some effort of this sort is imperative, and we must do the best we can with our materials. Stories of the class of Grimm's Witchelmänner (Kinder und Hausmärchen) will be recalled by the legend of Rowli Pugh as here told. The German Hausmänner are elves of a domestic turn, sometimes mischievous and sometimes useful, but usually looking for some material reward for their labours. So with the English goblin named by Milton in 'L'Allegro,' which drudges, To earn his cream-bowl duly set. FOOTNOTE: [12] Until recently, Welsh women retained their maiden names even after marriage. IV. The Ellylldan is a species of elf exactly corresponding to the English Will-o'-wisp, the Scandinavian Lyktgubhe, and the Breton Sand Yan y Tad. The Welsh word dan means fire; dan also means a lure; the compound word suggests a luring elf-fire. The Breton Sand Yan y Tad (St. John and Father)[13] is a double ignis fatuus fairy, carrying at its finger-ends five lights, which spin round like a wheel. The negroes of the southern seaboard states of America invest this goblin with an exaggeration of the horrible peculiarly their own. They call it Jack-muh-lantern, and describe it as a hideous creature five feet in height, with goggle-eyes and huge mouth, its body covered with long hair, and which goes leaping and bounding through the air like a gigantic grasshopper. This frightful apparition is stronger than any man, and swifter than any horse, and compels its victims to follow it into the swamp, where it leaves them to die. Like all goblins of this class, the Ellylldan was, of course, seen dancing about in marshy grounds, into which it led the belated wanderer; but, as a distinguished resident in Wales has wittily said, the poor elf 'is now starved to death, and his breath is taken from him; his light is quenched for ever by the improving farmer, who has drained the bog; and, instead of the rank decaying vegetation of the autumn, where bitterns and snipes delighted to secrete themselves, crops of corn and potatoes are grown.'[14]