should be noticed that the sills of the upper windows run on as
string-courses, which are continued round the circular angle-shafts of
the buttresses.

Passing eastward from the tower, the external #Roof# of the nave
becomes visible. The irregularly waved line of the ridge where the
lead rolls meet, as it were, against the sky, is a pretty indication
of the presence of the aged timbers underneath that support it above
the walls.

The oldest part of the building to be seen from this point is the
strip of walling at the clerestory level. The twelfth-century
round-arched windows are there almost complete. In detail they are
like those of the tower. Two of them, those in the fourth and fifth
bays from the tower, have had later work inserted in the same
openings.

The crest of the wall between the west and the central tower was
renewed in the fourteenth century. It consists of a parapet with a
weathered coping for the top course of stonework, so that the water
might not rest upon it and percolate through the walls. Three courses
below this is a simply moulded string-course, and immediately beneath
is the cusped arcade supported on the course of detached moulded and
shaped corbels. For five feet below the bottom of the corbels the
newer part of the wall is continued. It will be interesting later to
notice the way in which the parapet on the north side of the nave has
been dealt with. The reason for the presence of so much new walling at
this level is no doubt to be found in the fact that the roof timbers
at the time of the second fire were carried down over the walls.