This legend appears, in a slightly different form, in the 'Iolo MSS.,' as translated by Taliesin Williams, of Merthyr:[25] 'The milk-white milch cow gave enough of milk to every one who desired it; and however frequently milked, or by whatever number of persons, she was never found deficient. All persons who drank of her milk were healed of every illness; from fools they became wise; and from being wicked, became happy. This cow went round the world; and wherever she appeared, she filled with milk all the vessels that could be found, leaving calves behind her for all the wise and happy. It was from her that all the milch cows in the world were obtained. After traversing through the island of Britain, for the benefit and blessing of country and kindred, she reached the Vale of Towy; where, tempted by her fine appearance and superior condition, the natives sought to kill and eat her; but just as they were proceeding to effect their purpose, she vanished from between their hands, and was never seen again. A house still remains in the locality, called Y Fuwch Laethwen Lefrith (The Milk-white Milch Cow.)' FOOTNOTE: [25] Llandovery, published for the Welsh MSS. Society, 1848. IV. The legend of the Meddygon Myddfai again introduces the elfin cattle to our notice, but combines with them another and a very interesting form of this superstition, namely, that of the wife of supernatural race. A further feature gives it its name, Meddygon meaning physicians, and the legend professing to give the origin of certain doctors who were renowned in the thirteenth century. The legend relates that a farmer in the parish of Myddfai, Carmarthenshire, having bought some lambs in a neighbouring fair, led them to graze near Llyn y Fan Fach, on the Black Mountains. Whenever he visited these lambs three beautiful damsels appeared to him from the lake, on whose shores they often made excursions. Sometimes he pursued and tried to catch them, but always failed; the enchanting nymphs ran before him and on reaching the lake taunted him in these words: Cras dy fara, Anhawdd ein dala; which, if one must render it literally, means: Bake your bread, 'Twill be hard to catch us; but which, more poetically treated, might signify: Mortal, who eatest baken bread, Not for thee is the fairy's bed!