Fig. 1427.—Restalrig Collegiate Church. Vaulted Roof.

attached to the college, perhaps as the chapter house or St. Triduan’s Chapel.”

Fig. 1428.

Restalrig Collegiate Church.

Pier and Arch Ribs.

This building is a hexagon on plan (Fig. [1424]), measuring 29 feet in internal diameter, and stands about 3 feet from the south wall of the church, against which the angle buttresses have impinged.

On each of the three sides facing towards the south there is a window, now built up, each of which has a very flat four-centred arch, and contains three cusped lights (Fig. [1425]), divided by two mullions. The section of the jambs and mullions is shown in Fig. [1426]. The roof is vaulted (Fig. [1427]) with ribs springing from a central pier, which has a filleted roll towards each angle (Fig. [1428]).