compete for the prize of the horse’s head. The Mamilian tower, to which the Suburans nailed the horse’s head when they succeeded in carrying it off, appears to have been a peel-tower or keep of the old Mamilian family, the magnates of the village.(159) The ceremony thus performed on the king’s fields and at his house on behalf of the whole town and of the neighbouring village presupposes a time when each township performed a similar ceremony on its own fields. In the rural districts of Latium the villages may have continued to observe the custom, each on its own land, long after the Roman hamlets had merged their separate harvest-homes in the common celebration on the king’s lands. There is no intrinsic improbability in the supposition that the sacred grove of Aricia, like the Field of Mars at Rome, may have been the scene of a common harvest celebration, at which a horse was sacrificed with the same rude rites on behalf of the neighbouring villages. The horse would represent the fructifying spirit both of the tree and of the corn, for the two ideas melt into each other, as we see in customs like the Harvest-May. (M37) However, it should be borne in mind that the evidence for thus interpreting the relation of horses to Virbius is exceedingly slender, and that the custom of excluding horses from the sacred Arician grove may have been based on some other superstitious motive which entirely escapes us. At the city of Ialysus in Rhodes there was a sanctuary of Alectrona, one of the daughters of the Sun, into which no horse, ass, mule, or beast of burden of any kind might enter. Any person who broke the law by introducing one of these animals into the holy precinct, had to purify the place by a sacrifice; and the same atonement had to be made by any man who brought shoes or any portion of a pig within the sacred boundaries. And whoever drove or suffered his sheep to stray into the precinct was obliged to pay a fine of one obol for every sheep that set foot in it.(160) The reasons for these prohibitions are quite unknown; and the taboo on horses is particularly remarkable, since the Rhodians were in the habit of offering a chariot and horses every year to the Sun, the father of Alectrona,(161) doubtless in order that he might ride on them through the sky. Did they think that it was not for the daughter of the Sun to meddle with horses, which were the peculiar property of her father? The conjecture may perhaps be supported by an analogy drawn from West Africa. The Ewe negroes of the Slave Coast conceive the Rain-god Nyikplã as a man who rides a horse, and who may be seen galloping on it through the sky in the form of a shooting star. Hence in the town of Angla, where he generally resides when he is at home, no person may appear on horseback in the streets, that being apparently regarded as an impious usurpation of the style of the deity. In former days even Europeans were forbidden to