ad; 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.

[Illustration: The Choir Stalls at the beginning of the Nineteenth
Century.]

The present altar, designed by Sir A.W. Blomfield, occupies probably the
position of the original altar. The question where the high altar stood
has provoked much speculation. Professor Willis placed it more to the
westward, thinking that a quatrefoiled opening or hagioscope in the
screen wall of the last bay on the north side of the Presbytery (marked
9 on plan) was made to afford a view of it from the aisle. Harrod points
out that there is a small hole in the vault above, from which probably
hung down the light of the sacrament. The position of this hole, and the
fact that such a light would necessarily be placed before the altar, and
not over or behind it, is evidence that the altar was about where it is
now. Blomfield, again, averred that the people stood in the aisle and
confessed to the priest standing in the sanctuary, the "voice coming
through a hole made