covering an opening, the architect being apparently indifferent as to
which was used, so that it served the purpose.
The chapel is groined in the ordinary manner, the masonry being, as
usual, very fine. The ribs are all of the same general section (Fig.
1253, A A), but each set is slightly different in size, the diagonals
being the largest. There are no wall ribs. The details of the carved
bosses at the intersections are shown in Fig. 1253, B. A stone bench
runs
[Illustration: FIG. 1256.--Stirling Parish Church.