#The Presbytery# consists of two double severies, or four compartments, terminated by a semi-circular apse of five compartments. The four compartments on either side have, in the lower stages of their design, rich four-centred arches of Perpendicular period, with niches between on the piers; the spandrels are filled in to a horizontal line, above which, at the level of the triforium floor, is an elaborate cusped cresting. The triforium is Norman, lofty in scale. Over this come four light transitional (Decorated to Perpendicular) clerestory windows, with niches canopied forward in the thickness of the wall over the clerestory path; the windows being on the outer face of wall. From the apex of the ogee arches of the niches spring the vaulting ribs of the later vault, without any intermediate shaft. The apse preserves its Norman characteristics in the lower stage as well as at the triforium level. Here the interest of the student must surely be concentrated; as this eastern arm of the cathedral is the earliest part of the building. Herbert, the founder, laid the foundation-stone at the extreme east, probably in the original Norman Lady Chapel, and built westwards, and here, in front of the high altar, was he buried. [Illustration: The Choir and Presbytery in 1816.] The remains of the first bishop's throne, with the westward position, are in the central bay of the apse. Behind it, in the screen wall, can be discerned an arch which looks like a door head; if there be a vault beneath the presbytery, it is probable that this is the walled-up entrance. On the east side of the tower over the arch can be seen the lines of the original Norman roof. The Norman clerestory was so badly damaged by part of the tower falling in 1362 that the present clerestory was built in its place by Bishop Percy (1355-69), the presbytery, at the same time being covered over with a framed timber roof. In 1463 this (together with the spire) was struck by lightning, and fell burning into the presbytery, where it burned itself away. Here and there in the aisles, and wherever the Norman stonework is visible, traces of an orange discoloration give evidence of the heat generated by the mass. The present lierne vault was added by Bishop Goldwell (1472-99), and his rebus, a gold well, can be seen cut on the bosses at the intersections of vaulting ribs. The curious junction of the later vault with the ogee-shaped arches of the clerestory should be noticed. While the original triforium yet remains, the character of the main arcade was altered by the insertion of the four-centred "Perpendicular" arches, the work of Bishop Goldwell, whose tomb is under one on the south side. These lower arches were filled with screens, removed in 1875. The lower apsidal arches, in the beginning of the century, were completely filled with imitation Norman work; this has been cleared away to the original height of the screen wall, with much improvement to the general effect.