light under it has splayed jambs. This opening was probably once a
round-headed twelfth-century window, as the old abacus is still in
position.

The #South Side of the Choir# is externally divided into five bays.
There are five flying-buttresses to carry down the vault thrusts, with
a pinnacle above the buttress at the south-east angle. The first,
second, and third bays from the east side of the transept have still
the round-arched windows of the twelfth century set in the walling of
the same date. But it should be noted that part of the window in the
first bay was rebuilt after 1861. The fourth and fifth bays have
pointed windows, carved capitals, and angle-shafts. These, though now
entirely renewed, were built when the whole of this part of the choir
was added. Part of the walling for a few feet below the parapet was
renewed at the same time. The flying-buttresses are thirteenth-century
additions of the same date as the vaults within; and those three
nearest the transept abut on parts of the twelfth-century flat
buttresses. The flat projection was continued up to the parapet at a
later date, probably when the parapet itself was built on. But the
fourth buttress also abuts upon a slightly projecting flat strip of
buttressing. In this case, however, but not in the others, the flat
strip and the flying-buttress are of the same width and built as one
piece of structure. The third and fourth flying-buttresses have a
secondary, and apparently later, arch of fine grained white stone
beneath their larger arches.

The copings on the backs of these buttresses are not weathered like
those of the nave, and, except the one next the transept, each is
covered with lead. There are no pinnacles to them above the aisle
wall. The fourteenth-century builders had not touched them, as they
did those south of the nave. There are, too, no gutters along their
backs. It is curious that this method of carrying the water away from
the upper roofs over the lower ones should not have been adopted when
the parapets were put up.

[Illustration: THE CHOIR AND CENTRAL TOWER FROM THE SOUTH-EAST. _S.B.
Bolas & Co., photo_.]

The outer wall of the choir aisle is one of the most interesting
portions of the building, from an archaeological as well as an
architectural standpoint. It shows three of the arched heads of small
twelfth-century windows that used to light the earlier triforium
gallery. One of these has now a fifteenth-century insertion beneat