also corresponds with that of the aisle piers, both containing, as above mentioned, fine examples of Celtic foliage and figures. The peculiar traceried windows at the east end of the south aisle of choir and the adjoining piscina (see Fig. 999) are also clearly of late date. The cloister lies to the north of the nave; it measures 73 feet from north to south by 66 feet from east to west. The cloister walk has had a wooden roof all round, resting on corbels (see Fig. 994) in the main wall, and on an arcade on the side next the cloister garth. Some fragments of the shafts and arches of the arcade are preserved in the chapter house, and the bases of a twin column, socketed for the shafts, stand on the wall at the north-west angle. The arcade would thus appear to have rested on coupled shafts, and, so far as can be ascertained by examination of the only surviving portion at the south-west angle and the fragments in the chapter house, the arches were pointed and carved with Celtic ornament somewhat similarly to the arches of the sedilia in the choir (see Fig. 986). In each angle of the cloister walk an arch has been thrown across the walk diagonally, so as to strengthen and steady the walls. Only one of these arches, that at the south-west angle (see Fig. 994), remains entire, those in the other angles being reduced to fragments. This arch is the only one which is moulded on the edge, the others being splayed. These arches have evidently been built after the walls adjoining, as they fit awkwardly against previously existing doorways at the north-east and north-west angles. That at the south-west angle butts against a structure which seems to have formed a turret adjoining the north-west angle of the nave. This turret contains a small chamber, at about 7 feet to 8 feet above the floor of the nave, which enters by a small door from the nave, and is said to be the porter’s lodge. It has a curiously cusped loophole opening in the direction of the church door. The cloister is surrounded by buildings on the east and north. The north transept has a door to the cloister, and a benitier is placed near the entrance. Next to the transept on the north is a chamber, 10 feet wide, entering from the cloister (see Fig. 982), and lighted by a window to the east. There is a fireplace in the east wall of this room, being the only fireplace in the monastery. It seems doubtful whether this chamber was not originally the slype or passage from the cloister towards the east, as there is no other passage.