There is another distinction, too, to be made; where the soil is dense, cretaceous, or moist, there should be six modii of wheat or winter-wheat to the jugerum, but where the land is loose, dry, and prolific, four will be enough. A meagre soil, too, if the crop is not very thinly sown, will produce a diminutive, empty ear. Rich lands give a number of stalks to each grain, and yield a thick crop from only a light sowing. The result, then, is, that from four to six modii must be sown, according to the nature of the soil; though there are some who make it a rule that five modii is the proper proportion for sowing, neither more nor less, whether it is a densely-planted locality, a declivity, or a thin, meagre soil. To this subject bears reference an oracular precept which never can be too carefully observed[397]—“Don’t rob the harvest.”[398] Attius, in his Praxidicus,[399] has added that the proper time for sowing is, when the moon is in Aries, Gemini, Leo, Libra, and Aquarius. Zoroaster says it should be done when the sun has passed twelve degrees of Scorpio, and the moon is in Taurus. CHAP. 56.—THE PROPER TIMES FOR SOWING. We now come to a subject which has been hitherto deferred by us, and which requires our most careful attention—the proper times for sowing. This is a question that depends in a very great degree upon the stars; and I shall therefore make it my first care to set forth all the opinions that have been written in reference to the subject. Hesiod, the first writer who has given any precepts upon agriculture, speaks of one period only for sowing—the setting of the Vergiliæ: but then he wrote in Bœotia, a country of Hellas, where, as we have already stated,[400] they are still in the habit of sowing at that period.