_St. Doulough’s._--The Church of St. Doulough, the origin of which is involved in obscurity, is unique, and the most remarkable example of Pointed architecture remaining in Ireland. Bishop Reeves was of opinion that St. Doulough lived about the year 600, and had a cell here. The church lies about six miles north of Dublin, and, owing to its incongruity, has received much attention from writers on the ecclesiastical architecture of Ireland. This church has generally been classed with the stone-roofed chapels and oratories of the early Irish saints; but in style it differs completely from those buildings; and numerous architectural peculiarities, evidently original, prove the structure to belong to the latter end of the thirteenth century. It is an oblong church, 48 feet by 18 feet, with a square battlemented tower in the centre. A projection on the south wall of the tower contains a passage leading from the lower part of the building to an exceedingly small chamber, in the east wall of which are two windows, one commanding the only entrance to the church, the other an altar in an apartment or chapel between the tower and the west gable. The body of the structure is divided upon the interior by a mass of masonry which was evidently intended to support the roof, and which contains a small semicircular arch now stopped up. The western apartment measures 10 by 7½ feet; it is vaulted, and was originally lighted by several windows with flat or trefoiled heads. The altar, or ‘tomb,’ as it is popularly called, rests immediately against the masonry which divides this apartment from other portions of the building. The chapel or eastern division measures 21 by 9½ feet. It was lighted by four windows, one to the east, two to the south, and one, now stopped up, to the north. The east window is larger than the others, and is divided into two lights, by a shaft, with shallow hollows at the sides and a semi-cylindrical moulding on its external face. Similar hollows, and a moulding, run round the arch, and meet those of the shafts. The north window is of plain early Lancet form. The windows in the south wall are unequal in size; the larger one is placed beneath the tower, near the centre of the building, and is divided by a shaft into two lights, the heads of which are cinquefoiled, while the space between them and the crown of the arch is left plain. The vaults of the lower apartments form the floor of a croft occupying uninterruptedly the whole length of the church. There are the remains of a fireplace in the centre of the north wall of this singular room, which appears to have been originally used as a habitation. It is lighted by small trefoiled opes in the end walls, and is higher by several feet, for a distance of about four yards from the west gable, than the other part. By this arrangement, and by a depression of the vault of the western division of the building, provision is made for a small intermediate chamber,