Mythology.--A few words may be said about Egyptian mythology in general before we speak of some of the principal gods. The usual stories of the beginning of things are not wanting, as when the principal god is said to have been born from a primeval egg, or a whole family of gods to be the children of Seb and Nut; Seb, the earth, being in Egypt the male, and Nut, heaven, the female, of these earliest parents of all things. More than one god, moreover, is held to have been an earthly king, and to be the founder of the royal house which now pays him homage. "The days of Ra," for example, are spoken of as a golden age in which perfect justice and happiness prevailed. Many stories too may be found which profess to furnish an explanation of some feature of nature or some institution of society, to account for the names of places or of animals, or for the presence of the five days which were added to the twelve lunar months in Egypt to produce a satisfactory solar year. Many old stories of the gods have magical efficacy when told in certain situations; one is good against poison, but must be told in a certain way to produce the effect. After these stories of the gods' early reign of peace, come those relating to less happy periods, when the old god grew weak and began to have enemies, when gods and men became disobedient to him, when a war broke out among the gods, which is not yet brought to an end but breaks out ever afresh; or when the old god succumbed to his enemies, and his successor had to set out to avenge him. In some of these stories very primitive and savage traits appear, which show that they originated in a rude state of society. But they are about men, not about beasts, as we might have expected of Egyptian mythology, and the men are undoubtedly solar heroes; it is the fortunes of the daily (not the yearly) sun, his splendid and beneficent reign, his decline, his conflict with the powers of darkness, his decease and his resurrection, or the vengeance exacted on his behalf by his successor, that are spoken of, in connection now with one god and now with another.