In support of the antiquity of grinding corn, we may go as for back as the days of the patriarch Abraham, who, we are informed in Genesis xviii. 6, “hastened into the tent unto Sarah, and said, Make ready quickly three measures of fine meal, knead it, and make cakes upon the hearth.” To this we may add, that it appears in a subsequent text, Numbers xi. 8, that manna was ground like corn. The earliest instrument for this purpose seems to have been the mortar, which was retained long after the introduction of mills, properly so called: because they were most probably at first very imperfect. In process of time the mortar was made ridged, and the pestle notched at the bottom, by which means the grain was rather grated than pounded. A passage in Pliny, which has not as yet had a satisfactory interpretation, renders this conjecture probable. In time a handle was added to the top of the pestle, that it might be more easily driven round in a circle, whence this machine at first was called _mortarium_, by this means assuming the name of a hand-mill. Such a mill was so called from rubbing backwards and forwards; and varied but little from those used by our colour-grinders, apothecaries, potters, and other artisans. From expressions in the sacred volume, we may rationally infer that it was customary to have a mill of this sort in every family. Moses having forbidden to take such instruments for a pledge; for that, says he, “No man shall take the nether or the upper millstone to pledge: for he taketh a man’s life.” It is observed by Michaelis, on this passage, that a man could not then grind, consequently could not bake the necessary daily bread for the family. Grinding was then the employment of the women, particularly of female slaves, as at present in those countries which are uncivilised: the portion of strength required for the operation, therefore, could not have been great; but afterwards the mills were driven by bondsmen, whose necks were placed in a circular machine of wood, so that they could not put their hands to their mouths or eat of the meal. This must have been an interesting link between the hand and the horse-mill. In course of time shafts were added to the mill, that it might be driven by cattle, which were then blindfolded. The first cattle mills were called _molae jumentaria_, which had, probably, only a heavy pestle like the hand-mill; but it is conjectured, that it must have been soon remarked, that the labour would be more easily accomplished, if, instead of the pestle a large heavy cylinder was employed. A competent judge has, however, believed that the first cattle mills had not a spout or trough as ours have; at least those hand-mills Tournefort saw at Nicaria, consisted only of two stones; but the meal issued through an opening in the upper one, and fell upon a board or table, on which the lower one rested.