In book xviii., 23, Pliny gives us _the mode of grinding corn_. ‘All the grains are not easily broken. In Etruria they first parch the spelt in the ear, and then pound it with a pestle shod with iron at the end. In this instrument the iron is notched at the bottom, sharp ridges running out like the edge of a knife, and concentrating in the form of a star, so that, if care is not taken to hold the pestle perpendicularly while pounding, the grains will only be splintered and the iron teeth broken. Throughout the greater part of Italy, however, they employ a pestle that is only rough at the end, and wheels turned by water, by means of which the corn is gradually ground. I shall here set forth the opinions given by Mago as to the best method of pounding corn. He says that the wheat should be steeped first of all in water, and then cleaned from the husk, after which it should be dried in the sun and then pounded with the pestle; the same plan, he says, should be adopted in the preparation of barley.’ This was how corn was prepared in some parts of Italy at the time of the Christian era, by the same method as that described by Livingstone: ‘The corn is pounded in a large wooden mortar, like the ancient Egyptian one, with a pestle six feet long and about four inches thick. The pounding is performed by two or even three women at one mortar. Each, before delivering a blow with her pestle, gives an upward jerk of the body, so as to put strength into the stroke, and they keep exact time, so that two pestles are never in the mortar at the same moment.... By the operation of pounding, with the aid of a little water, the hard outside scale or husk of the grain is removed, and the corn is made fit for the millstone. The meal irritates the stomach unless cleared from the husk; without considerable energy in the operation the husk sticks fast to the corn. Solomon thought that still more vigour than is required to separate the hard husk or bran from the wheat would fail to separate “a fool from his folly.” “Though thou shouldest bray a fool in a mortar among wheat with a pestle, yet will not his foolishness depart from him.”’ [Illustration: A BAKEHOUSE AT POMPEII.] We have noticed the primitive Homeric millstones and the Etruscan pestles and mortars, but at the time of the Christian era things molinary were somewhat more advanced. Doubtless in parts of the country the hand mill or quern, called _Mola manuaria_, _versatilis_ or _trusatilis_, was in use, and it was worked by slaves, who were sent to the _pistorineum_ as a punishment. But the usual corn mill was worked by animals, and was called _Mola iumentaria_ or _Mola asinaria_.