11th and 15th January, and the Lemuria in May are on the 9th, 11th, and 13th; the Lucaria in July on 19th and 21st. In some months, too, _e.g._ August and December, perhaps also July and February, there seem to be traces of an arrangement by which festivals which probably had some connection with each other are thus arranged; _e.g._ in August six festivals, all concerned in some way with the fruits of the earth and the harvest, occur on the 17th, 19th, 21st, 23rd, 25th, and 27th. It has recently been suggested[198] that these are arranged round one central festival, which gives a kind of colouring to the others, as the Volcanalia in August, the Saturnalia in December. But the reasons von Domaszewski gives for the arrangement, and the further speculation that where it does not occur we may find traces of an older system, as yet unaffected by the so-called Pythagorean prejudice, do not seem to me satisfactory. We may be content with the general principle as I have stated it, and note that while religious duties _must_ be performed on days of odd number, civil duties were not so restricted: the days belonging to the gods, which were, so to speak, taboo days, were more important than those belonging to men. There are, as I have said, but two days marked in the large letters as festivals, which are on days of even number, 24th February and 14th March, the Regifugium and the second Equirria; and about these we know so little that it is almost useless to speculate as to the reason for their exception from the rule. Two others, 24th March and 24th May, were partly the property of the gods and partly of men, and are marked QRCF (_quando rex comitiavit fas_); but the sense in which they partially belonged to the gods is not the same as in the case of sacrificial festivals. This calendar thus shows obvious signs of both military and political development; in other words, its witness to the religious experience of the Romans proves that they had successfully adjusted the forms and seasons of their worship to the processes of government at home and of military service in the field. But the most conspicuous feature in it is the testimony it bears to the agricultural habits of the people--to the fact that agriculture and not trade, of which there is hardly a trace, was the economic basis of their life. At the time when it was drawn up, the Romans must have been able to subsist upon the _ager Romanus_, though, as we shall see later on, it was probably not long before they began commercial relations with other peoples; for their food, which was almost entirely vegetarian, and their clothing, which was entirely of wool and leather,[199] they depended on their crops, flocks, and herds; and the perils to which these were liable remain for the State, as for the farming household, the main subject of the propitiation of the gods, the main object of their endeavours to keep themselves in right relation with the Power manifest in the universe.