Samian stone2738 comes from the same island which produces the earth in praise of which we have spoken already.2739 It is useful for giving a polish to gold, and it is employed medicinally for the treatment of ulcerations of the eyes, combined with milk in manner already2740 described. It is good, too, for watery discharges of a chronic nature, from the eyes. Taken internally, it is useful for affections of the stomach, and it has the effect of dispelling vertigo and restoring the spirits when depressed. Some writers are of opinion that this stone may be administered with advantage for epilepsy and strangury; and it is employed as an ingredient in the restoratives known as “acopa.”2741 The test of its purity is its weight and its whiteness. Some persons will have it that, worn as an amulet, it acts as a preventive of abortion.