The external appearance of this chapel is illustrated in Fig. 1157,
where the fine angle buttresses of the apse, with their considerable
projection and height (owing to the upper story) and their picturesque
pinnacles, and the stair turret are fully shown. The buttresses have
each an ornamental corbel and canopy for a statue placed on their face,
but without any niche. Fig. 1164 shows one of them with its elaborate
carved work. The very quaint aspect of the whole building looking from
the west is seen in the drawing (see Fig. 1158). The height of the two
turrets, as shown on Mr. Mackenzie’s geometrical drawings, is the same,
viz., 41 feet 6 inches.
[Illustration: FIG. 1162.