The windows of the aisles, in the choir and part of the nave, are very
much alike and very simple in design, and some of them are grouped and
contain rudimentary rather than real tracery. Some of these are visible
in the choir in Fig. 593, and Fig. 595 shows one in the north aisle of
the choir, which may be taken as a specimen. It consists of three
lancets separated by mullions, which might rather be described as
portions of the wall with small buttresses attached, and the whole
enclosed within one arch, having the spandril above pierced with a
quatrefoil and two trefoils.
The tracery of the windows on the south side of the nave is simple, but
completely formed (see Fig. 590), each window having two mullions and
three trefoils in the arch head. Those of the clerestory have each a
central mullion divided in the arch into two branches (Fig. 596).
The tracery in the great windows in the west end (see Fig. 569) and in
those of the north transept (see Fig. 593) and south transept is modern,
and it is not easy to determine how far the designs follow the
originals. The north transept window (see Fig. 596), which was “taken
down and rebuilt,”[66] looks, from the simplicity of its design, to be
probably like what the original may have been. Regarding the other two
great windows, one cannot be so sure. The great buttress enclos-
[Illustration: FIG. 595.--St. Mungo’s Cathedral.