The exterior of the church is exceedingly simple. There are doors at the west end and in the west bay of the north aisle. In front of the former there was a groined porch, of which a small portion of the springer for the groining on one side only remains; this was brought to light by the removal of a brick porch which had been erected in its place. The string-course above the door is of the thirteenth century, but the window above it of three lights, and three other windows of two lights in the western bays of the aisles, are of the fourteenth century, and the work, probably, of Bishop Haymo de Hethe. The north aisle door is remarkable for its rich detail and peculiar character. One of the orders is adorned with a chevron on one face and with dogteeth on the other, and the inner order is enriched with a rose. The dogteeth and the carving of the rose are quite consistent in character with the date of the church, and the chevron is no doubt a curious instance of imitation of earlier work, rather than evidence of the doorway itself being earlier than the rest of the church. The dogteeth are well developed, and the roses are similar in character to those in the internal jambs and arches of the transept doors at Westminster. The windows in the side walls of the aisles are all alike on the exterior, simply chamfered with labels over them, save the western window of the south aisle, where there is no label. Those at the east ends of the aisles are more important; that to the east of the north aisle being of four lights, and that to the east of the south aisle of two lights. The buttresses are very simple, of two stages in height, with plain weatherings. The north chancel aisle is the Wilshyre chantry, a late third-pointed work, with a battlemented parapet. The erection of this chapel involved the removal of one of the chancel buttresses, and in place of it a very bold flying buttress was erected, which spans the roof of the chapel, and adds much to the picturesque effect of this side of the church. Its erection in the fifteenth century was good proof, in the absence of any other, that at that time at any rate the groined roof of the chancel was standing, for otherwise its erection would never have been required. The removal of the high, tiled, lean-to roof of the Wilshyre chantry has exposed the flying buttress, the fine east window of the north aisle, and the still finer window in the north wall, restored, as I have said, in exact accordance with the window which I was so happy as to find there. The vestry, which forms a continuation of the north chancel aisle, is lighted with two small windows, with ogee trefoiled heads. It was a roofless ruin, but now it has been re-roofed, and, as well as the chantry, is covered with a lead flat roof, which seems to have been the original covering, and has the advantage of not concealing any portion of the chancel. The east window is new, of three lights, corresponding in all respects with