restory, and the triforium
passage runs outside the building. But when the choir proper was begun,
after an interval of some years, the architects, seeing, no doubt, that
the older design was flat and somewhat wanting in relief, were seized by
a happy idea. They set the clerestory windows some inches back, so that
they were no longer level with the interior wall and with the triforium,
and placed the triforium passage in its customary place. The difference
in the design may be easily observed both inside and outside the
building.

By this simple change, a greater relief and depth, a greater contrast of
light and shade, was given to the whole design; and this without
breaking its continuity or harmony in any degree.

The following differences in plan and detail between nave and choir may
also be remarked:--

Besides the transom dividing clerestory from triforium to be found in
the nave, there is a second transom in the choir crossing the openings
of the triforium. This gives a greater fulness and complexity to the
design.

In the eastern bays, below the openings of the triforium, the bases of
the mullions are elongated to about two feet in length, and between them
are cusped arches. These arches and the mullions themselves are set on a
slanting ridge, like the mullions of the triforium in the transepts.

The vaulting shafts also do not terminate altogether at the point at
which the ribs of the vault converge, but the outer ones rise some ten
feet higher than the central one, until they are cut short by the
spreading ribs of the vault. This is a difference characteristic of the
Perpendicular style, which tends to an interweaving of lines, and an
abolition of capitals, where possible.

The mouldings of the main arches also are broader than on the nave, and
the clusters of the piers bolder.

It must also be remembered that, as the floor of the choir rises
gradually to the east, the proportions of the eastward bays are
materially altered, and the main arches are smaller relatively to the
clerestory than in the nave. There is no doubt that this change is a
fortunate one. It is also lucky that it occurs in that part of the
building which otherwise differs least from the design of the nave.

Finally, it must be remembered, in accounting for the greater
effectiveness of the later work, that a choir design is made for
different conditions, and has different objects in view, from that of a
nave.

It has often been rema