united in the same hands, and that sooner or later the holder of the office seeks to rid himself of part of his burden by deputing to others, according to his temper and tastes, either his civil or his religious duties. Hence we may take it as probable that the fighting kings of Rome, tired of parading as Jupiter and of observing all the elaborate ritual, all the tedious restrictions which the character of godhead entailed on them, were glad to relegate these pious mummeries to a substitute, in whose hands they left the crosier at home while they went forth to wield the sharp Roman sword abroad. This would explain why the traditions of the later kings, from Tullus Hostilius onwards, exhibit so few traces of sacred or priestly functions adhering to their office. Among the ceremonies which they henceforward performed by deputy may have been the rite of the sacred marriage. [Sidenote: At the sacred marriage the King and Queen of Rome probably personated the god and goddess of the oak.] Whether that was so or not, the legend of Numa and Egeria appears to embody a reminiscence of a time when the priestly king himself played the part of the divine bridegroom; and as we have seen reason to suppose that the Roman kings personated the oak-god, while Egeria is expressly said to have been an oak-nymph, the story of their union in the sacred grove raises a presumption that at Rome in the regal period a ceremony was periodically performed exactly analogous to that which was annually celebrated at Athens down to the time of Aristotle.[638] The marriage of the King of Rome to the oak-goddess, like the wedding of the vine-god to the Queen of Athens, must have been intended to quicken the growth of vegetation by homoeopathic magic. Of the two forms of the rite we can hardly doubt that the Roman was the older, and that long before the northern invaders met with the vine on the shores of the Mediterranean their forefathers had married the tree-god to the tree-goddess in the vast oak forests of Central and Northern Europe. In the England of our day the forests have mostly disappeared, yet still on many a village green and in many a country lane a faded image of the sacred marriage lingers in the rustic pageantry of May Day. Footnote 540: See above, vol. i. pp. 17 _sq._ Footnote 541: See above, vol. i. p. 12. Footnote 542: Catullus, xxxiv. 9 _sqq_. Footnote 543: Wernicke, in Pauly-Wissowa, _Real-Encyklopädie der classischen Altertumswissenschaft_, ii. coll. 1343, 1351. Footnote 544: