The foaming waters may have suggested another animal personification, since the name of the Boyne in Ptolemy, (bououinda), is derived from a primitive bóu-s, "ox," and vindo-s, "white," in Irish bó find, "white cow."577 But it is not certain that this or the Celtic cult of the bull was connected with the belief in the Tarbh Uisge, or "Water-bull," which had no ears and could assume other shapes. It dwells in lochs and is generally friendly to man, occasionally emerging to mate with ordinary cows. In the Isle of Man the Tarroo Ushtey, however, begets monsters.578 These Celtic water-monsters have a curious resemblance to the Australian Bunyip.
The Uruisg, often confused with the brownie, haunts lonely places and waterfalls, and, according to his mood, helps or harms the wayfarer. His appearance is that of a man with shaggy hair and beard.579 In Wales the afanc is a water-monster, though the word first meant "dwarf," then "water-dwarf," of whom many kinds existed. They correspond to the Irish water-dwarfs, the Luchorpáin, descended with the Fomorians and Goborchinn from Ham.580
In other cases the old water beings have a more pleasing form, like the syrens and other fairy beings who haunt French rivers, or the mermaids of Irish estuaries.581 In Celtic France and Britain lake fairies are connected with a water-world like that of Elysium tales, the region of earlier divinities.582 They unite with mortals, who, as in the Swan-maiden tales, lose their fairy brides through breaking a tabu. In many Welsh tales the bride is obtained by throwing bread and cheese on the waters, when she appears with an old man who has all the strength of youth. He presents his daughter and a number of fairy animals to the mortal. When she disappears into the waters after the breaking of the tabu, the lake is sometimes drained in order to recover her; the father then appears and threatens to submerge the whole district. Father and daughters are earlier lake divinities, and in the bread and cheese we may see a relic of the offerings to these.583
Human sacrifice to water-divinities is suggested by the belief that water-monsters devour human beings, and by the tradition that a river claims its toll of victims every year. In popular rhymes the annual character of the sacrifice is hinted at, and Welsh legend tells of a voice heard once a year from rivers or lakes, crying, "The hour is come, but the man is not."584 Here there is the trace of an abandoned custom of sacrifice and of the traditional idea of the anger of the divinity at being neglected. Such spirits or gods, like the water-monsters, would be ever on the watch to capture those who trespassed on their domain. In some cases the victim is supposed to be claimed on Midsummer eve, the time of the sacrifice in the pagan period.585 The spirits of wells had also a harmful aspect to those, at least, who showed irreverence in approaching them. This is seen in legends about the danger of looking rashly into a well or neglecting to cover it, or in the belief that one must not look back after visiting the well. Spirits of wells were also besought to do harm to enemies.
Legends telling of the danger of removing or altering a well, or of the well moving elsewhere because a woman washed her hands in it, point to old tabus concerning wells. Boand, wife of Nechtain, went to the fairy well which he and his cup-bearers alone might visit, and when she showed her contempt for it, the waters rose and destroyed her. They now flow as the river Boyne. Sinend met with a similar fate for intruding on Connla's well, in this case the pursuing waters became the Shannon.586 These are variants of a story which might be used to explain the origin of any river, but the legends suggest that certain wells were tabu to women because certain branches of knowledge, taught by the well, must be reserved for men.587 The legends said in effect, "See what came of women obtruding beyond their proper sphere." Savage "mysteries" are usually tabu to women, who also exclude men from their sacred rites. On the other hand, as all tribal lore was once in the hands of the wise woman, such tabus and legends may have arisen when men began to claim such lore. In other legends women are connected with wells, as the guardians who must keep them locked up save when water was drawn. When the woman neglected to replace the cover, the waters burst forth, overwhelming her, and formed a loch.588 The woman is the priestess of the well who, neglecting part of its ritual, is punished. Even in recent times we find sacred wells in charge of a woman who instructs the visitors in the due ritual to be performed.589 If such legends and survivals thus point to former Celtic priestesses of wells, these are paralleled by the Norse Horgabrudar, guardians of wells, now elves living in the waters.590 That such legends are based on the ritual of well-worship is suggested by Boand's walking three times widdershins round the well, instead of the customary deiseil. The due ritual must be observed, and the stories are a warning against its neglect.
In spite of twenty centuries of Christianity and the anathemas of saints and councils, the old pagan practices at healing wells have survived—a striking instance of human conservatism. S. Patrick found the pagans of his day worshipping a well called Slán, "health-giving," and offering sacrifices to it,591 and the Irish peasant to-day has no doubt that there is something divine about his holy wells. The Celts brought the belief in the divinity of springs and wells with them, but would naturally adopt local cults wherever they found them. Afterwards the Church placed the old pagan wells under the protection of saints, but part of the ritual often remained unchanged. Hence many wells have been venerated for ages by different races and through changes in religion and polity. Thus at the thermal springs of Vicarello offerings have been found which show that their cult has continued from the Stone Age, through the Bronze Age, to the days of Roman civilisation, and so into modern times; nor is this a solitary instance.592 But it serves to show that all races, high and low, preserve the great outlines of primitive nature religion unchanged. In all probability the ritual of the healing wells has also remained in great part unaltered, and wherever it is found it follows the same general type. The patient perambulated the well three times deiseil or sun-wise, taking care not to utter a word. Then he knelt at the well and prayed to the divinity for his healing. In modern times the saint, but occasionally the well itself, is prayed to.593 Then he drank of the waters, bathed in them, or laved his limbs or sores, probably attended by the priestess of the well. Having paid her dues, he made an offering to the divinity of the well, and affixed the bandage or part of his clothing to the well or a tree near by, that through it he might be in continuous rapport with the healing influences. Ritual formulæ probably accompanied these acts, but otherwise no word was spoken, and the patient must not look back on leaving the well. Special times, Beltane, Midsummer, or August 1st, were favourable for such visits,594 and where a patient was too ill to present himself at the well, another might perform the ritual