to the gods, and appointed their own priests for each of the deities.  And, first of all, he divided the year into twelve months, according to the courses of the moon;[19] and because the moon does not fill up the number of thirty days in each month, and some days are wanting to the complete year, which is brought round by the solstitial revolution, he so regulated this year, by inserting intercalary months, that every twentieth year, the lengths of all the intermediate years being filled up, the days corresponded with the same starting-point of the sun whence they had set out.  He likewise divided days into sacred and profane, because on certain occasions it was likely to be expedient that no business should be transacted with the people.

Next he turned his attention to the appointment of priests, though he discharged many sacred functions himself, especially those which now belong to the flamen of Jupiter.  But, as he imagined that in a warlike nation there would be more kings resembling Romulus than Numa, and that they would go to war in person, in order that the sacred functions of the royal office might not be neglected, he appointed a perpetual priest as flamen to Jupiter, and distinguished him by a fine robe, and a royal curule chair.  To him he added two other flamens, one for Mars, another for Quirinus.  He also chose virgins for Vesta, a priesthood derived from Alba, and not foreign to the family of the founder.  That they might be constant attendants in the temple, he appointed them pay out of the public treasury; and by enjoining virginity, and various religious observances, he made them sacred and venerable.  He also chose twelve Salii for Mars Gradivus, and gave them the distinction of an embroidered tunic, and over the tunic a brazen covering for the breast.  He commanded them to carry the shields called Ancilia,[20] which fell fromheaven, and to go through the city singing songs, with leaping and solemn dancing.  Then he chose from the fathers Numa Marcius, son of Marcius, as pontiff, and consigned to him a complete system of religious rites written out and recorded, showing with what victims, upon what days, and at what temples the sacred rites were to be performed, and from what funds the money was to be taken to defray the expenses.  He also placed all other religious institutions, public and private, under the control of the decrees of the pontiff, to the end that there might be some authority to whom the people should come to ask advice, to prevent any confusion in the divine worship being caused by their neglecting the ceremonies of their own country, and adopting foreign ones.  He further ordained that the same pontiff should instruct the people not only in the ceremonies connected with the heavenly deities, but also in the due performance of funeral solemnities, and how to appease the shades of the dead; and what prodigies sent by lightning or any other phenomenon were to be attended to and expiated.  To draw forth such knowledge from the minds of the gods, he dedicated an altar on the Aventine to Jupiter Elicius, and consulted the god by means of auguries as to what prodigies ought to be attended to.