An ingenious method of obtaining the stone is given by the same writer: ‘Put a great or overgrown toad (first bruised in divers places) into an earthen pot; put the same into an ant’s hillock, and cover the same with earth, which toad at length the ants will eat, so that the bones of the toad and stone will be left in the pot.’ A mediæval author, however, states that the stone should be obtained while the toad is living, and this may be done by simply placing upon him a piece of scarlet cloth, ‘wherewithal they are much delighted, so that, while they stretch out themselves as it were in sport upon that cloth, they cast out the stone of their head, but instantly they sup it up again, unless it be taken from them through some secret hole in the same cloth.’ The scarlet, however did not always perform this miracle, for Boethius relates how he watched a whole night an old toad he had laid on a red cloth to see him cast forth the stone, but the toad was stubborn, and left him nothing to ‘gratify the great pangs of his whole night’s restlessness.’ The Londesborough Collection contains two remarkable specimens of rings connected with toad superstition, thus described by Mr. Fairholt: ‘The first is of mixed metal, gilt, having upon it the figure of a toad swallowing a serpent. There is a mediæval story of a necromancer introducing himself to another professor of magic by showing him a serpent-ring, upon which the latter, who did not desire anyone to interfere with his practice, produced his toadstone ring, observing that the toad might swallow the serpent, thereby intimating his power to overcome him. The second ring is curious, not only as containing the true toad-stone, but the stone is embossed with the figure of a toad, according to the description of Albertus Magnus, who describes the most valuable variety of this coveted gem as having the figure of the reptile engraved on it.’ [Illustration: Toadstone rings.] Prætorius mentions that a member of the German house of Alveschleben received a ring from a ‘Nixe’ to which the future fortunes of his line were to be attached. The turquoise ring of Shylock, which he would not have given for a ‘wilderness of monkeys’ (‘Merchant of Venice,’ scene i.), was probably more esteemed for its secret virtues than from any commercial value, the turquoise, turkise, or turkey-stone having, from remote periods, been supposed to possess talismanic properties. Fenton, in his ‘Secret Wonders of Nature’ (1569), thus describes the stone: ‘The turkeys doth move when there is any peril prepared to him that weareth it.’ Dr. Donne alludes to A compassionate turquoise, that doth tell, By looking pale, the wearer is not well.