‘I have found out a new cure for rheumatism,’ said the lady beside whom it was my privilege to sit at dinner. ‘You carry a potato about in your pocket!’

Some one has written an amusing account of the behaviour of a man who is finishing a book. He takes his ideas everywhere with him and broods over them, even at dinner, in the pauses of conversation. But here was a lady who kindly contributed to my studies and offered me folklore and survivals in cultivated Kensington.

My mind had strayed from the potato cure to the New Zealand habit of carrying a baked yam at night to frighten away ghosts, and to the old English belief that a bit of bread kept in the pocket was sovereign against evil spirits. Why should ghosts dread the food of mortals when it is the custom of most races of mortals to feed ancestral ghosts? The human mind works pretty rapidly, and all this had passed through my brain while I replied, in tones of curiosity: ‘A potato!’

‘Yes; but it is not every potato that will do. I heard of the cure in the country, and when we came up to town, and my husband was complaining of rheumatism, I told one of the servants to get me a potato for Mr. Johnson’s rheumatism. “Yes, ma’am,” said the man; “but it must be a stolen potato.” I had forgotten that. Well, one can’t ask one’s servants to steal potatoes. It is easy in the country, where you can pick one out of anybody’s field.’ ‘And what did you do?’ I asked. ‘Oh, I drove to Covent Garden and ordered a lot of fruit and flowers. While the man was not looking, I stole a potato — a very little one. I don’t think there was any harm in it.’ ‘And did Mr. Johnson try the potato cure?’ ‘Yes, he carried it in his pocket, and now he is quite well. I told the doctor, and he says he knows of the cure, but he dares not recommend it.’

How oddly superstitions survive! The central idea of this modern folly about the potato is that you must pilfer the root. Let us work the idea of the healing of magical herb backwards, from Kensington to European folklore, and thence to classical times, to Homer, and to the Hottentots. Turning first to Germany, we note the beliefs, not about the potato, but about another vegetable, the mandrake. Of all roots, in German superstition, the Alraun, or mandrake is the most famous. The herb was conceived of, in the savage fashion, as a living human person, a kind of old witch-wife.157

Again, the root has a human shape. ‘If a hereditary thief who has preserved his chastity gets hung,’ the broad-leafed, yellow-flowered mandrake grows up, in his likeness, beneath the gallows from which he is suspended. The mandrake, like the moly, the magical herb of the Odyssey, is ‘hard for men to dig.’ He who desires to possess a mandrake must stop his ears with wax, so that he may not hear the deathly yells which the plant utters as it is being dragged out of the earth. Then before sunrise on a Friday, the amateur goes out with a dog, ‘all black,’ makes three crosses round the mandrake, loosens the soil about the root, ties the root to the dog’s tail, and offers the beast a piece of bread. The dog runs at the bread, drags out the mandrake root, and falls dead, killed by the horrible yell of the plant. The root is now taken up, washed with wine, wrapped in silk, laid in a casket, bathed every Friday, ‘and clothed in a little new white smock every new moon.’ The mandrake acts, if thus considerately treated, as a kind of familiar spirit. ‘Every piece of coin put to her over night is found doubled in the morning.’ Gipsy folklore, and the folklore of American children, keep this belief in doubling deposits. The gipsies use the notion in what they call ‘The Great Trick.’ Some foolish rustic makes up his money in a parcel which he gives to the gipsy. The latter, after various ceremonies performed, returns the parcel, which is to be buried. The money will be found doubled by a certain date. Of course when the owner unburies the parcel he finds nothing in it but brass buttons. In the same way, and with pious confidence, the American boy buries a marble in a hollow log, uttering the formula, ‘What hasn’t come here, come! what’s here, stay here!’ and expects to find all the marbles he has ever lost.158 Let us follow the belief in magical roots into the old Pagan world.

The ancients knew mandragora and the superstitions connected with it very well. Dioscorides mentions mandragorus, or antimelon, or dirc?a, or Circ?a, and says the Egyptians call it apemoum, and Pythagoras ‘anthropomorphon.’ In digging the root, Pliny says ‘there are some ceremonies observed, first they that goe about this worke, look especially to this that the wind be not in their face, but blow upon their backs. Then with the point of a sword they draw three circles round about the plant, which don, they dig it up afterwards with their face unto the west.’ Pliny says nothing of the fetich qualities of the plant, as credited in modern and medi?val Germany, but mentions ‘sufficient it is with some bodies to cast them into sleep with the smel of mandrago.’ This is like Shakespeare’s ‘poppy and mandragora, and all the drowsy syrups of the world.’ Plato and Demosthenes159 also speak of mandragora as a soporific. It is more to the purpose of magic that Columella mentions ‘the half-human mandragora.’ Here we touch the origin of the mandrake superstitions. The roots have a kind of fantastic resemblance to the human shape; Pliny describes them as being ‘of a fleshy substance and tender.’ Now it is one of the recognised principles in magic, that things like each other, however superficially, affect each other in a mystic way, and possess identical properties. Thus, in Melanesia, according to Mr. Codrington,160 ‘a stone in the shape of a pig, of a bread-fruit, of a yam, was a most valuable find,’ because it made pigs prolific, and fertilised bread-fruit trees and yam-plots. In Scotland, too, ‘stones were called by the names of the limbs they resembled, as “eye-stane,” “head-stane.” A patient washed the affected part of his body, and rubbed it well with the stone corresponding.’161 In precisely the same way, the mandrake root, being thought to resemble the human body, was credited with human and superhuman powers. Josephus mentions162 a plant ‘not easily caught, which slips away from them that wish to gather it, and never stands still’ till certain repulsive rites are performed. These rites cannot well be reported here, but they are quite familiar to Red Indian and to Bushman magic. Another way to dig the plant spoken of by Josephus is by aid of the dog, as in the German superstition quoted from Grimm. ?lian also recommends the use of the dog to pluck the herb aglaophotis, which shines at night.163 When the dog has dragged up the root, and died of terror, his body is to be buried on the spot with religious honours and secret sacred rites.

So much for mandragora, which, like the healing potato, has to be acquired stealthily and with peril. Now let us examine the Homeric herb moly. The plant is thus introduced by Homer: In the tenth book of the Odyssey, Circe has turned Odysseus’s men into swine. He sets forth to rescue them, trusting only to his sword. The god Hermes meets him, and offers him ‘a charmed herb,’ ‘this herb of grace’ (φ?ρμακον ?σθλ?ν), whereby he may subdue the magic wiles of Circe.

The plant is described by Homer with some minuteness. ‘It was black at the root, but the flower was like to milk. “Moly,” the gods call it, but it is hard for mortal men to dig, howbeit with the gods all things are possible.’ The etymologies given of ‘moly’ are almost as numerous as the etymologists. One derivation, from the old ‘Turanian’ tongue of Accadia, will be examined later. The Scholiast offers the derivation ‘μωλ?ειν, to make charms of no avail’; but this is exactly like Professor Blackie’s etymological discovery that Erinys is derived from ?ριν?ειν: ‘he might as well derive critic from criticise.’164 The Scholiast adds that moly caused death to the person who dragged it out of the ground. This identification of moly with mandrake is probably based on Homer’s remark that moly is ‘hard to dig.’ The black root and white flower of moly are quite unlike the yellow flower and white fleshy root ascribed by Pliny to mandrake. Only confusion is caused by regarding the two magical herbs as identical.

But why are any herbs or roots magical? While some Scholars, like De Gubernatis, seek an explanation in supposed myths about clouds and stars, it is enough for our purpose to observe that herbs really have medicinal properties, and that untutored people invariably confound medicine with magic. A plant or root is thought to possess virtue, not only when swallowed in powder or decoction, but when carried in the hand. St. John’s wort and rowan berries, like the Homeric moly, still ‘make evil charms of none avail’;

Rowan, ash, and red threed

Gar the witches tyne their speed,

says the Scotch rhyme. Any fanciful resemblance of leaf or flower or root to a portion of the human body, any analogy based on colour, will give a plant reputation for magical virtues. This habit of mind survives from the savage condition. The Hottentots are great herbalists. Like the Greeks, like the Germans, they expect supernatural aid from plants and roots. Mr. Hahn, in his Tsui Goam, the Supreme Being of the Khoi Khoi (p. 82), gives the following examples:—

Dapper, in his description of Africa, p. 621, tells us: ‘Some of them wear round the neck, roots, which they find far inland, in rivers, and being on a journey they lig............