westernmost, which are circular and without tracery--a type of window
that is somewhat rare--can hardly be later than the time of Archbishop
Roger, and may be earlier: the next two are square and of much later
date. Above the windows the eaves of the original roofs remain,
supported on a corbel-table which is carried round the apsidal chamber
at the corner and round the eastern apse. At the south side of the
latter the builders have left a narrow recess which extends from the
ground nearly to the top of the crypt.

The apse displays in the lower storey a round-headed unglazed window
like those along the south wall, and in the upper storey a small
round-headed light at the south side and a larger window in the middle,
of the same size as that below, but not so deeply splayed, and with the
head rudely trefoiled. On either side of these central windows, a shaft,
made in short joints, runs up the apse from base to eaves. The string
between the two storeys is carried round these shafts, and their
circular bases overhang the plinth and rest on small blocks, while the
capitals are square-topped, as in Archbishop Roger's work. From the roof
of this apse and of the apsidal chamber at the corner, and from the
eaves that project along the south wall, it would seem that the whole
structure was roofed with stone at a steep inclination. Where its wall
joins the transept the stone-work seems to be of the same date on both
sides of the corner, so that there may have been an original buttress or
wall extending southwards from this point.

The third storey is now the Cathedral library, but was originally the
=Lady-chapel=, and was commonly called the Lady-loft. Such a position for
a Lady-chapel--at the south side of the choir, and in an upper
storey--is extremely unusual.[46] Authorities have differed widely as to
its date. Some have assigned it to about 1482; but the Lady-loft is
clearly mentioned in the Treasurers' Rolls in 1470, and its
architecture, which is Decorated rather than Perpendicular, would be in
favour of ascribing it to the middle of the previous century, were it
not for a certain coarseness of execution which makes a suspension of
judgment advisable.[47] To support this additional storey, the two
western buttresses were carried up, diminishing both in projection and
in width, to within a few feet of the upper string-course. The huge
buttress at the corner was very possibly added later, to counteract a
settlement which i