Arrows, pointed weapons, and other foreign substances that require to be extracted from the body, are removed by the application of a mouse split asunder, or of a lizard more particularly, similarly divided, or else the head only of the animal, pounded with salt. The snails, too, that are found in clusters upon leaves, are pounded and applied with their shells on; as also those that are used as food, the shells being first removed, applied with hare's rennet in particular. The bones of a snake, applied with the rennet of any four-footed animal, will produce a similar effect before the end of two days: cantha- rides, also, bruised applied with barley-meal, are highly extolled.