They were, as a passage in the Book of Armagh names them, _dei terreni_, earth-gods, and were, and are still, invoked by the peasantry to yield increase and fertility. The literary conception of them is plainly Druidic in origin, the other popular; and the popular and doubtless older conception has proved the more enduring. But these features of Irish mythology will appear better in the actual tales than in any critical discussion of them; and to the tales let us now return. *The Milesian Settlement of Ireland* The Milesians had three leaders when they set out for the conquest of Ireland—Eber Donn (Brown Eber), Eber Finn (Fair Eber), and Eremon. Of these the first-named, as we have seen, was not allowed to enter the land—he perished as a punishment for his brutality. When the victory over the Danaans was secure the two remaining brothers turned to the Druid Amergin for a judgment as to their respective titles to the sovranty. Eremon was the elder of the two, but Eber refused to submit to him. Thus Irish history begins, alas! with dissension and jealousy. Amergin decided that the land should belong to Eremon for his life, and pass to Eber after his death. But Eber refused to submit to the award, and demanded an immediate partition of the new-won territory. This was agreed to, and Eber took the southern half of Ireland, “from the Boyne to the Wave of Cleena,”(115) while Eremon occupied the north. But even so the brethren could not be at peace, and after a short while war broke out between them. Eber was slain, and Eremon became sole King of Ireland, which he ruled from Tara, the traditional seat of that central authority which was always a dream of the Irish mind, but never a reality of Irish history. *Tiernmas and Crom Cruach* Of the kings who succeeded Eremon, and the battles they fought and the forests they cleared away and the rivers and lakes that broke out in their reign, there is little of note to record till we come to the reign of Tiernmas, fifth in succession from Eremon. He is said to have introduced into Ireland the worship of Crom Cruach, on Moyslaught (The Plain of Adoration(116)), and to have perished himself with three-fourths of his people while worshipping this idol on November Eve, the period when the reign of winter was inaugurated. Crom Cruach was no doubt a solar deity, but no figure at all resembling him can be identified among the Danaan divinities. Tiernmas also, it is said, found the first gold-mine in Ireland, and introduced variegated colours into the clothing of the people. A slave might wear but one colour, a peasant two, a soldier three, a wealthy landowner four, a provincial chief five, and an Ollav, or royal person, six. Ollav was a term applied to a certain Druidic rank; it meant much the same as “doctor,” in the sense of a learned man—a master of science. It is a characteristic trait that the Ollav is endowed with a distinction equal to that of a king. *Ollav Fōla*