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 an exception that we need not wonder at finding the rule of the Arician grove recorded without any mention of an exception such as I suppose. If we had had only the statements of Athenaeus and Pliny, we should have known only the rule which forbade the sacrifice of goats to Athena and excluded them from the Acropolis, without being aware of the important exception which the fortunate preservation of Varro's work has revealed to us.

The conjecture that once a year a horse may have been sacrificed in the Arician grove as a representative of the deity of the grove derives some support from the similar sacrifice of a horse which took place once a year at Rome. On the fifteenth of October in each year a chariot-race was run on the Field of Mars. Stabbed with a spear, the right-hand horse of the victorious team was then sacrificed to Mars for the purpose of ensuring good crops, and its head was cut off and adorned with a string of loaves. Thereupon the inhabitants of two wards--the Sacred Way and the Subura--contended with each other who should get the head. If the people of the Sacred Way got it, they fastened it to a wall of the king's house; if the people of the Subura got it, they fastened it to the Mamilian tower. The horse's tail was cut off and carried to the king's house with such speed that the blood dripped on the hearth of the house. Further, it appears that the blood of the horse was caught and preserved till the twenty-first of April, when the Vestal Virgins mixed it with the blood of the unborn calves which had been sacrificed six days before. The mixture was then distributed to shepherds, and used by them for fumigating their flocks.

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, seem to indicate that the horse was killed as one of those animal representatives of the corn-spirit of which we have found 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. In both the Roman and the African custom the animal apparently stands for 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. Again, the practice of fumigating the cattle in spring with the blood of the horse may be compared with the practice of giving the Old Wife, the Maiden, or the _clyack_ sheaf as fodder to the horses in spring or the cattle at Christmas, and giving the Yule Boar to the ploughing oxen or horses to eat in spring. All these usages 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 squalid 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