24 Transactions. 
Arch. Under the Rood Loft, on either side of the screen, are 
corbellings, on the west side of sculptured figures, and on the east 
of very large leaf work. The Chancel Arch is a segmental 
pointed one, and the imposts are shafted, with floriated capitals 
similar to that which had belonged to the west respond of the 
Arcade. 
Entering the Chancel the eastern window is seen to occupy 
nearly the whole width of the wall and extend upwards to the 
vaulting. Below the window are corbels which supported the 
slab of the High Altar, and on its sill is a small carved image 
bracket. In the south wall are a triple Sedilia or seat for the 
officiating priest and his attendants, and a Piscina; and in the 
north wall the tomb of Margaret, Countess of Douglas, all of 
very beautiful design and workmanship, and in their parts bear- 
ing considerable resemblance to one another. 
The Chancel was roofed by groined and ribbed vaulting in 
three divisions, the vaulting shafts and parts of the ribs being 
still upon the walls. The design has been a very beautiful one, 
and bore considerable resemblance to that of a later church— 
Holy Trinity, Edinburgh—of the roof of which Mr T. S. Muir 
remarks—“ A more expressive and chastely designed roof than 
that over the Choir and Apse is seldom anywhere to be met with, 
The finely moulded groin-ribs gradually breaking apart from the 
clustered stems and ramifying along the edges of the various cells, 
the heavy longitudinal rib with its bold mouldings, and the 
numerous and variously sculptured bosses, with their jutting bud- 
like forms and symbolic leafage, produce an extremely rich, 
graceful, and satisfactory effect.” 
Over the vaulting of the Chancel, as in the case of the side 
Chapel, there has been an apartment to which access was got by 
the newel stair before mentioned, and the apartment was roofed 
by plainstone vaulting with large chamfered transverse ribs. Of 
the upper vaulting only a little at each side above the springing 
remains, but it was complete when Grose visited the ruins in 
1789, and an etching by Storer in 1805 represents one of the 
ribs as then in position. 
The Sacristy is a north one, and access to it is by a rich door- 
way in the wall of the Chancel. There is a descent of three steps 
to the room, and it has been roofed, in two divisions, by seg- 
mental groined vaulting of rag work, with plain chamfered ribs, 
springing direct from the walls without shaft or corbel, 
