(10.) Wheat yields a fine flour[188] of the very highest quality. In African wheat the modius ought to yield half a modius of fine flour and five sextarii of pollen, that being the name given to fine wheat meal, in the same way that that of winter wheat is generally known as “flos,” or the “flower.” This fine meal is extensively used in copper works and paper manufactories. In addition to the above, the modius should yield four sextarii of coarse meal, and the same quantity of bran. The finest wheaten flour will yield one hundred[189] and twenty-two pounds of bread, and the fine meal of winter wheat one hundred[189] and seventeen, to the modius of grain. When the prices of grain are moderate, meal sells at forty asses the modius, bolted wheaten flour at eight asses more, and bolted flour of winter wheat, at sixteen asses more. There is another distinction again in fine wheaten flour, which originated formerly in the days of L. Paulus. There were three classes of wheat; the first of which would appear to have yielded seventeen pounds of bread, the second eighteen, and the third nineteen pounds and a third: to these were added two pounds and a half of seconds,[190] and the same quantity of brown[190] bread, with six sextarii of bran.[191] Winter wheat never ripens all at once, and yet there is none of the cereals that can so ill brook any delay; it being of so delicate a nature, that the ears directly they are ripe will begin to shed their grain. So long, however, as it is in stalk, it is exposed to fewer risks than other kinds of wheat, from the fact of its always having the ear upright, and not retaining the dew, which is a prolific cause of mildew. From arinca[192] a bread of remarkable sweetness is made. The grains in this variety lie closer than they do in spelt; the ear, too, is larger and more weighty. It is rarely the case that a modius of this grain does not weigh full sixteen pounds. In Greece they find great difficulty in threshing it; and hence it is that we find Homer[193] saying that it is given to beasts of burden, this being the same as the grain that he calls “olyra.” In Egypt it is threshed without any difficulty, and is remarkably prolific. Spelt has no beard, and the same is the case with winter wheat, except[194] that known as the Laconian variety. To the kinds already mentioned we have to add bromos,[195] the winter wheat just excepted, and tragos,[196] all of them exotics introduced from the East, and very similar to rice. Tiphe[197] also belongs to the same class, from which in our part of the world a cleaned grain resembling rice is prepared. Among the Greeks, too, there is the grain known as zea; and it is said that this, as well as tiphe, when cleaned from the husk and sown, will degenerate[198] and assume the form of wheat; not immediately, but in the course of three years. CHAP. 21.—THE FRUITFULNESS OF AFRICA IN WHEAT.