In the west wall can be seen the place where a doorway led into a chamber built in between the sacristy and the south transept aisle. This was no doubt the treasury of the cathedral, where all the most precious relics and valuables were kept. It is now entered by a doorway in the choir aisle. At present it appears to be a receptacle for odds and ends, and cupboards are placed along the walls. On the west side are several large aumbries, in which, no doubt, the relics were kept. The floor in this chamber has been raised at some time or other, and it is now much higher than that of the adjoining consistory court, so that there are steps in the south-east corner leading to a door into the consistory court. This is not the old doorway already mentioned, which is blocked up, but probably a much later entrance. Some old cannon balls which have been discovered in and round the cathedral may be seen in the treasury. On the north wall in both the consistory court and the treasury can be seen the remains of an old course or housing which, though in both cases incomplete, appears to have a semi-circular form. No theory seems to have been advanced as to these remains, and in this book it were wiser to follow precedent. =The Chapter-House=, which lies to the north of the choir, is approached by a vestibule which has a doorway, already described, into the third bay of the north choir aisle. Both the chapter-house and the vestibule were built at the same time as the north transept--that is, somewhere near the middle of the thirteenth century--and the style is therefore that known as the Early English, but it is a later instance than that part of the choir into which the doorway leads. That the vestibule was not built when the early part of the choir was finished is evident, as "its walls abut against those of the choir with a straight joint, and the arch of entrance in the side aisle is a manifest intrusion into the space once occupied by a window." The north end of the vestibule has also been altered, there having been a doorway where now there is a window; the former existed until nearly the end of the last century, but it had been altered before the plate in Britton's "Cathedrals" was engraved. It can easily be seen from the outside that such a door must have existed, from the different colouring of the stone-work. The window has recently been filled with stained glass by Messrs Burlison & Grylls, representing Nehemiah and Simeon, in memory of the late verger, William Yeend. Down each side of the vestibule there is a very fine arcading, that on the west side being double and much deeper than that on the east, which is single; the niches are large enough to be used as seats, and it has been suggested that here the ceremony of washing the feet of the poor took place on Maundy Thursday; as there were thirteen niches, this is highly probable. Some of the capitals of the pillars of the arcade