[Illustration: FIG. 801.--Lincluden College. Door to Sacristy, and Monument to Margaret, Countess of Douglas.] been a north aisle. The sacristy is entered from the north side of the choir. The door is very ornate, and contained, on two shields, the arms of Archibald the Grim and his lady (Fig. 801). The sacristy was covered with groined vaulting, and had an entrance from the court of the domestic apartments. [Illustration: FIG. 802.--Lincluden College. Choir.] The details of the architecture of the choir are of great beauty (Fig. 802). It has often been remarked that they are unusually large and massive, as if intended for a larger structure, which gives them great picturesqueness of effect. The corbels which carry the vaulting shafts are carved in the form of angels, some playing musical instruments. The caps of the shafts are richly ornamented with foliage and armorial bearings; and as these are well preserved in the durable red stone of the district, the heraldic decorations tell the story of the intimate connection of the Douglas family with the structure (Fig. 803). [Illustration: FIG. 803.--Lincluden College. Caps of Shafts.] Large pointed windows, originally filled with fine geometric tracery (Figs. 800 and 804), are inserted in all the bays of the south side of the nave and choir and in the gable walls of the choir and transept. The design of the tracery may be easily restored from the surviving fragments (see Billings). The windows of the north wall of the choir are placed high in the wall and are of small dimensions, owing to the large monument in that wall, and also because part of the wall was covered by the roof of the sacristy. The mullions and tracery are all very massive and of purer geometric form than is generally met with in Scotland. The somewhat debased tracery common in later Scottish structures is here entirely absent. The exterior of the structure (see Fig. 800) is simple, but chaste, in design, and accords well with that of the interior. The base mouldings and the beautifully-carved cornice are decorated in character. The splendid monument in the north wall of the choir (see Fig. 801) was erected in memory of Margaret, daughter of Robert III. and wife of Archibald, 4th Earl of Douglas, son of Archibald the Grim. He went to France in 1423, with a large retinue, to the aid of Charles VII., by whom he was created Duke of Touraine. He was killed at the battle of Verneuil, in 1424. The countess survived till about 1440. She made grants to the college in 1429, which were confirmed by her brother, James I. She also founded a chapel, and increased the number of inmates from thirteen to thirty-four. The monument is evidently part of the original design. The choir would, therefore, appear to have been in [Illustration: FIG. 804.--Lincluden College. Chancel Arch, Rood Screen, and Nave.]