In this ceremony the decoration of the horse’s head with a string of loaves, and the alleged object of the sacrifice, namely, to procure a good harvest, clearly indicate that the horse was killed as one of those animal representatives of the corn-spirit of which we have seen so many examples. The custom of cutting off the horse’s tail is like the African custom of cutting off the tails of the oxen and sacrificing them to obtain a good crop.(234) In both the Roman and the African custom the animal represents the corn-spirit; and its fructifying power is supposed to reside especially in its tail. The latter idea occurs, as we have seen, in European folk-lore.(235) Again, the custom of fumigating the cattle in spring with the blood of the horse may be compared with the custom of giving the Maiden as fodder to the cattle at Christmas, and giving the Yule Boar to the ploughing oxen or horses to eat in spring.(236) All these customs aim at ensuring the blessing of the corn-spirit on the homestead and its inmates and storing it up for another year. The Roman sacrifice of the October horse, as it was called, carries us back to the early days when the Subura, afterwards a low and crowded quarter of the great metropolis, was still a separate village, whose inhabitants engaged in a friendly contest on the harvest-field with their neighbours of Rome, then a little rural town. The Field of Mars on which the ceremony took place lay beside the Tiber, and formed part of the king’s domain down to the abolition of the monarchy. For tradition ran that at the time when the last of the kings was driven from Rome, the corn stood ripe for the sickle on the crown lands beside the river; but no one would eat the accursed grain and it was flung into the river in such heaps that, the water being low with the summer heat, it formed the nucleus of an island.(237) The horse sacrifice was thus an old autumn custom observed upon the king’s corn-fields at the end of the harvest. The tail and blood of the horse, as the chief parts of the corn-spirit’s representative, were taken to the king’s house and kept there; just as in Germany the harvest-cock is nailed on the gable or over the door of the farmhouse; and as the last sheaf, in the form of the Maiden, is carried home and kept over the fireplace in the Highlands of Scotland. Thus the blessing of the corn-spirit was brought to the king’s house and hearth and, through them, to the community of which he was the head. Similarly in the spring and autumn customs of Northern Europe the May-pole is sometimes set up in front of the house of the mayor or burgomaster, and the last sheaf at harvest is brought to him as the head of the village. But while the tail and blood fell to the king, the neighbouring village of the Subura, which no doubt once had a similar ceremony of its own, was gratified by being allowed to compete for the prize of the horse’s head. The Mamilian tower