upper part is filled with geometrical tracery.

Below the west window are three other windows grouped together. They
are at the triforium level, where they were probably inserted before
the middle of the thirteenth century; but they have been restored at
various times since then.

The #West Porch# is a comparatively simple structure. It rises from
the ground with a deep weathered base. At the top of the walls is a
plain weathered coping, which overhangs about one inch. The simple,
but extremely well designed, buttresses at the north and south angles
add much interest to it as a composition artistically and as a study
in structure. The small, straight buttresses on the west are only
weathered once, and this at the top; but those on the north and south
sides are different. There is a broad central buttress weathered twice
from the base to its top, and in the angle on either side of it are
what appear to be two lower, smaller buttresses, with one weathering
slope. The probability is that there was only a small buttress here at
first, and that the larger one on either side was added by being
built over the shallower, broader, and shorter one.

[Illustration: WALL-ARCADE IN THE WEST PORCH. _S.B. Bolas & Co.,
photo_.]

These buttresses have been placed here in order to counteract the
thrust of the large, deeply-set covering arch over the entrance to the
porch. This arch is of interest, as it has but a slight label; and
then the outside angle of the soffit only is moulded, the rest being
recessed both at the jambs and in the arch for about two feet, with no
mouldings at all. Then comes a delicately moulded arch in two orders,