In folk-survivals the practice of rain-making is connected with sacred springs, and even now in rural France processions to shrines, usually connected with a holy well, are common in time of drought. Thus people and priest go to the fountain of Baranton in procession, singing hymns, and there pray for rain. The priest then dips his foot in the water, or throws some of it on the rocks.[1105] In other cases the image of a saint is carried to a well and asperged, as divine images formerly were, or the waters are beaten or thrown into the air.[1106] Another custom was that a virgin should clean out a sacred well, and formerly she had to be nude.[1107] Nudity also forms part of an old ritual used in Gaul. In time of drought the girls of the village followed the youngest virgin in a state of nudity to seek the herb belinuntia. This she uprooted, and was then led to a river and there asperged by the others. In this case the asperging imitated the falling rain, and was meant to produce it automatically. While some of these rites suggest the use of magic by the folk themselves, in others the presence of the Christian priest points to the fact that, formerly, a Druid was necessary as the rain producer. In some cases the priest has inherited through long ages the rain-making or tempest-quelling powers of the pagan priesthood, and is often besought to exercise them.[1108]
Causing invisibility by means of a spell called feth fiada, which made a person unseen or hid him in a magic mist, was also used by the Druids as well as by Christian saints. S. Patrick's hymn, called Fâed Fiada, was sung by him when his enemies lay in wait, and caused a glamour in them. The incantation itself, fith-fath, is still remembered in Highland glens.[1109] In the case of S. Patrick he and his followers appeared as deer, and this power of shape-shifting was wielded both by Druids and women. The Druid Fer Fidail carried off a maiden by taking the form of a woman, and another Druid deceived Cúchulainn by taking the form of the fair Niamh.[1110] Other Druids are said to have been able to take any shape that pleased them.[1111] These powers were reflected back upon the gods and mythical personages like Taliesin or Amairgen, who appear in many forms. The priestesses of Sena could assume the form of animals, and an Irish Circe in the Rennes Dindsenchas called Dalb the Rough changed three men and their wives into swine by her spells.[1112] This power of transforming others is often described in the sagas. The children of Lir were changed to swans by their cruel stepmother; Saar, the mother of Oisin, became a fawn through the power of the Druid Fear Doirche when she rejected his love; and similarly Tuirrenn, mother of Oisin's hounds, was transformed into a stag-hound by the fairy mistress of her husband Iollann.[1113] In other instances in the sagas, women appear as birds.[1114] These transformation tales may be connected with totemism, for when this institution is decaying the current belief in shape-shifting is often made use of to explain descent from animals or the tabu against eating certain animals. In some of these Irish shape-shifting tales we find this tabu referred to. Thus, when the children of Lir were turned into swans, it was proclaimed that no one should kill a swan. The reason of an existing tabu seemed to be sufficiently explained when it was told that certain human beings had become swans. It is not impossible that the Druids made use of hypnotic suggestion to persuade others that they had assumed another form, as Red Indian shamans have been known to do, or even hallucinated others into the belief that their own form had been changed.
By a "drink of oblivion" Druids and other persons could make one forget even the most dearly beloved. Thus Cúchulainn was made to forget Fand, and his wife Emer to forget her jealousy.[1115] This is a reminiscence of potent drinks brewed from herbs which caused hallucinations, e.g. that of the change of shape. In other cases they were of a narcotic nature and caused a deep sleep, an instance being the draught given by Grainne to Fionn and his men.[1116] Again, the "Druidic sleep" is suggestive of hypnotism, practised in distant ages and also by present-day savages. When Bodb suspected his daughter of lying he cast her into a "Druidic sleep," in which she revealed her wickedness.[1117] In other cases spells are cast upon persons so that they are hallucinated, or are rendered motionless, or, "by the sleight of hand of soothsayers," maidens lose their chastity without knowing it.[1118] These point to knowledge of hypnotic methods of suggestion. Or, again, a spectral army is opposed to an enemy's force to whom it is an hallucinatory appearance—perhaps an exaggeration of natural hypnotic powers.[1119]
Druids also made a "hedge," the airbe druad, round an army, perhaps circumambulating it and saying spells so that the attacking force might not break through. If any one could leap this "hedge," the spell was broken, but he lost his life. This was done at the battle of Cul Dremne, at which S. Columba was present and aided the heroic leaper with his prayers.[1120]
A primitive piece of sympathetic magic used still by savages is recorded in the Rennes Dindsenchas. In this story one man says spells over his spear and hurls it into his opponent's shadow, so that he falls dead.[1121] Equally primitive is the Druidic "sending" a wisp of straw over which the Druid sang spells and flung it into his victim's face, so that he became mad. A similar method is used by the Eskimo angekok. All madness was generally ascribed to such a "sending."
Several of these instances have shown the use of spells, and the Druid was believed to possess powerful incantations to discomfit an enemy or to produce other magical results. A special posture was adopted—standing on one leg, with one arm outstretched and one eye closed, perhaps to concentrate the force of the spell,[1122] but the power lay mainly in the spoken words, as we have seen in discussing Celtic formulæ of prayer. Such spells were also used by the Filid, or poets, since most primitive poetry has a magical aspect. Part of the training of the bard consisted in learning traditional incantations, which, used with due ritual, produced the magic result.[1123] Some of these incantations have already come before our notice, and probably some of the verses which Cæsar says the Druids would not commit to writing were of the nature of spells.[1124] The virtue of the spell lay in the spoken formula, usually introducing the name of a god or spirit, later a saint, in order to procure his intervention, through the power inherent in the name. Other charms recount an effect already produced, and this, through mimetic magic, is supposed to cause its repetition. The earliest written documents bearing upon the paganism of the insular Celts contain an appeal to "the science of Goibniu" to preserve butter, and another, for magical healing, runs, "I admire the healing which Diancecht left in his family, in order to bring health to those he succoured." These are found in an eighth or ninth century MS., and, with their appeal to pagan gods, were evidently used in Christian times.[1125] Most Druidic magic was accompanied by a spell—transformation, invisibility, power over the elements, and the discovery of hidden persons or things. In other cases spells were used in medicine or for healing wounds. Thus the Tuatha Dé Danann told the Fomorians that they need not oppose them, because their Druids would restore the slain to life, and when Cúchulainn was wounded we hear less of medicines than of incantations used to stanch his blood.[1126] In other cases the Druid could remove barrenness by spells.
The survival of the belief in spells among modern Celtic peoples is a convincing proof of their use in pagan times, and throws light upon their nature. In Brittany they are handed down in certain families, and are carefully guarded from the knowledge of others. The names of saints instead of the old gods are found in them, but in some cases diseases are addressed as personal beings. In the Highlands similar charms are found, and are often handed down from male to female, and from female to male. They are also in common use in Ireland. Besides healing diseases, such charms are supposed to cause fertility or bring good luck, or even to transfer the property of others to the reciter, or, in the case of darker magic, to cause death or disease.[1127] In Ireland, sorcerers could "rime either a man or beast to death," and this recalls the power of satire in the mouth of File or Druid. It raised blotches on the face of the victim, or even caused his death.[1128] Among primitive races powerful internal emotion affects the body in curious ways, and in this traditional power of the satire or "rime" we have probably an exaggerated reference to actual fact. In other cases the "curse of satire" affected nature, causing seas and rivers to sink back.[1129] The satires made by the bards of Gaul, referred to by Diodorus, may have been believed to possess similar powers.[1130] Contrariwise, the Filid, on uttering an unjust judgment, found their faces covered with blotches.[1131]
A magical sleep is often caused by music in the sagas, e.g. by the harp of Dagda, or by the branch carried by visitants from Elysium.[1132] Many "fairy" lullabies for producing sleep are even now extant in Ireland and the Highlands.[1133] As music forms a part of all primitive religion, its soothing powers would easily be magnified. In orgiastic rites it caused varying emotions until the singer and dancer fell into a deep slumber, and the tales of those who joined in a fairy dance and fell asleep, awaking to find that many years had passed, are mythic extensions of the power of music in such orgiastic cults. The music of the Filid had similar powers to that of Dagda's harp, producing laughter, tears, and a delicious slumber,[1134] and Celtic folk-tales abound in similar instances of the magic charm of music.
We now turn to the use of amulets among the Celts. Some of these were symbolic and intended to bring the wearer under the protection of the god whom they symbolised. As has been seen, a Celtic god had as his symbol a wheel, probably representing the sun, and numerous small wheel discs made of different materials have been found in Gaul and Britain.[1135] These were evidently worn as amulets, while in other cases they were offered to river divinities, since many are met with in river beds or fords. Their use as protective amulets is shown by a stele representing a person wearing a necklace to which is attached one of these wheels. In Irish texts a Druid is called Mag Ruith, explained as magus rotarum, because he made his Druidical observations by wheels.[1136] This may point to the use of such amulets in Ireland. A curious amulet, connected with the Druids, became famous in Roman times and is described by Pliny. This was the "serpents' egg," formed from the foam produced by serpents twining themselves together. The serpents threw the "egg" into the air, and he who sought it had to catch it in his cloak before it fell, and flee to a running stream, beyond which the serpents, like the witches pursuing Tam o' Shanter, could not follow him. This "egg" was believed to cause its owner to obtain access to kings or to gain lawsuits, and a Roman citizen was put to death in the reign of Claudius for bringing such an amulet into court. Pliny had seen this "egg." It was about the size of an apple, with a cartilaginous skin covered with discs.[1137] Probably it was a fossil echinus, such as has been found in Gaulish tombs.[1138] Such "eggs" were doubtless connected with the cult of the serpent, or some old myth of an egg produced by serpents may have been made use of to account for their formation. This is the more likely, as rings or beads of glass found in tumuli in Wales, Cornwall, and the Highlands are called "serpents' glass" (glain naidr), and are believed to be formed in the same way as the "egg." These, as well as old spindle-whorls called "adder stones" in the Highlands, are held to have magical virtues, e.g. against the bite of a serpent, and are highly prized by their owners.[1139]