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Rh The similarity of this tomb with those at Glen Columbkille has already been pointed out, and no doubt others exist in Ireland, and will be brought to light as soon as attention is directed to the subject. But meanwhile they seem, so far as we can at present judge, to make up an extensive group of pagan or semi-pagan monuments, extending from the time of St. Patrick to that of St. Columba, and, as such, are among the latest, and certainly among the most interesting, monuments of the class in Ireland.

Vague as all this may probably appear, there is one dolmen in Ireland which seems to have a date. The great grandson of Dathi, whose red pillar-stone at Rath Croghan, erected A.D. 428, we have already pointed out, was named Ceallach. He was murdered by his four foster-brothers through envy about the sovereignty. They were hanged for their crime at a spot known as Ard-na-Riagh, near Ballina, and were buried on a hill on the opposite side of the river, where a dolmen still stands, and is pointed out as the grave of the four Maols, the murderers. These particulars are related in the Dinnsenchus, in the Book of Lecan, and in the Annals of the Hy Fiachrach, translated by Dr. O'Donovan (p. 35), who, in a note, adds that "this evidence, coupled with the description of the situation on the other side of the Moy, opposite Ard-na-Riagh, leaves no doubt of its identity."

The dolmen in question has nothing very remarkable about it. The cap-stone, which measures 9 feet by 7 feet, is hexagonal in form, and is supported on three uprights, arranged similarly to those of Kit's Cotty House. It is perfectly level, and stands about 4 feet above the level of the soil. The cap-stone may have been fashioned into its present form by art; but there is no sign of chiselling, and, altogether there is nothing that would attract especial attention. The interest rests with its date. If it can be