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 or 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. {144} 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. {145} Let us follow the belief in magical roots into the old Pagan world.