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 beneath
it. This is in the second bay from the transept. It is a small window
with a cusped head and a square label-mould above it. In the same area
of walling there are shown the levels of the cut string-course that
ran along under the sills of the twelfth-century aisle windows. It is
the same string and at the same level as it appears upon the
south-west angle of the transept and the south-west tower of the west
front. It shows, too, in the second bay, the level of the old abaci
which ran across from each capital in the window jambs and stopped
against the sides of the buttresses. There is also the continuous
chamfer course that ran along the walls above the heads of these aisle
windows. In proof of these things there is even now one of these same
old windows in almost its original state within the little chamber
known as the priest-vicars' vestry. This window is in the bay of aisle
walling immediately against the transept wall. The string-courses of