Killmallock Abbey, in Limerick, belonged to the order of the Dominicans, founded by the scion of the Guzmans, the ardent apostle of Old Castile, known to history as Saint Dominick. Here again we have a beautiful abbey church with a square central tower, upborne on soaring and graceful arches from the point where the nave joined the choir. There is only one transept--on the south--so that the church is not fully cruciform, a peculiarity shared by several other Dominican buildings. The eastern window and the window of this transept are full of delicate grace and beauty, each containing five lights, and marked by the singularly charming manner in which the mullions are interlaced above. Enough remains of the cloister and the domestic buildings for us to bring back to life the picture of the old monastic days, when the good Friars worked and prayed there, with the sunlight falling on them through the delicate network of the windows. Holycross Abbey, near Thurles in Tipperary, was another of the Cistercian foundations, its charter, dating from 1182, being still in existence. Its church is cruciform; the nave is separated from the north aisle by round arches, and from the south aisle by pointed arches, which gives it a singular and unusual beauty. The great western window of the nave, with its six lights, is also very wonderful. Two chapels are attached to the north transept, with a passage between them, its roof supported by a double row of pointed arches upheld by twisted pillars. The roof is delicately groined, as is the roof of the choir, and the whole abbey breathes a luxuriant richness of imagination, bearing everywhere the signs of high creative genius. The same lavish imagination is shown everywhere in the interlaced tracery, the black limestone giving the artist an admirable vehicle for his work. Though the charter dates from the twelfth century, some of the work is about two centuries later, showing finely the continuity of life and spiritual power in the old monastic days. [Illustration: Holy Cross Abbey, Co. Tipperary.] The Friars of Saint Augustine, who were in possession of the abbey at Newtown on the Boyne, had another foundation not far from West port in Mayo, in the Abbey of Ballintober, founded in 1216 by a son of the great Ruaidri Ua Concobar. Here also we have the cruciform church, with four splendid arches rising from the intersection of nave and choir, and once supporting the tower. The Norman windows over the altar, with their dog-tooth mouldings, are very perfect. In a chapel on the south of the choir are figures of the old abbots carved in stone.