The =Central Tower= rests on four lofty arches supported by massive piers. These piers were enlarged to carry the additional weight of the upper storeys of the tower, and are surrounded by banded shafts, chiefly of Purbeck marble. The foliage at the crown of each arch should be noticed; the same occurs on the great central arch of the west front. Above the spandrels, which are covered with the trellis-work also seen elsewhere, are two rows of arcading, with slender clustered shafts. There is a passage all round the upper arcade, and the wall behind is pierced with four windows on each side. The vaulting, like that of the western towers, was erected by Treasurer Welburne (d. 1380); it is 125 feet high. The iron rings in the great piers, two or three feet from the ground, were used for fastening the ropes of the Lady Bells, which were hung in the tower above, and were rung before service by the four choristers in black. The =Western Transept= is considered to be the least satisfactory part of the interior of the minster. The lowness of the vault is especially noticeable. In fact, it had to be raised in the last bay to the north, in order to include the whole of the circular window, part of which would otherwise have been cut off. Yet the transept possesses features of considerable interest. It was planned and commenced by St. Hugh and continued by his immediate successors. A low aisle runs along the eastern side, divided into six chapels, which are dedicated respectively (beginning at the north end) to St. Nicholas, St. Denis, St. James (or St. Thomas), St. Edward the Martyr, St. John the Evangelist and St. Giles. To the walls of these chapels we must look in order to trace the limit of St. Hugh's labours. A characteristic of the bishop's work is the curious double arcading on the walls he built (see p. 89). It is found in the choir and the eastern transept. Mr. Parker's theory that the front arcade was an afterthought, put up when the original flimsy walls were strengthened to support the vault, has been already given in his own words (p. 18). To whatever circumstance the feature may be due, its effect is certainly very good. It will be noticed that the two chapels nearest the choir, and parts of the two chapels next to them, have this double arcading, in which a slight difference has been pointed out. On the north side, the trefoiled arch is against the wall, and the simple arch in front; on the other side the order is reversed. This fact seems rather to strengthen the opinion of those who consider the double arcade to have been designed as such from the beginning. The end of this arcading must be taken to mark the limit of St. Hugh's work. An arcade of single arches is seen in the last chapel on each side, and this simpler design is continued round the other walls of the transept, the arches varying in breadth and resting on clustered shafts. The chapels each occupy one bay of the aisle, and are formed by projecting