“I stated that the rood screen at Glasgow was erected by Archbishop Blacader, and that it was probably begun about the year 1492. The charter evidence is that the archbishop founded the two altars in their present position in the base of the screen, and that he founded the altar _for which the screen was erected_, the altar of Holy Cross. As the screen encroaches considerably on the original length of the choir, being of great depth from west to east, it is natural to suppose that its erection would entail the remodelling of the choir fittings. It was in the archbishop’s time, then, that the new choir stalls were constructed. From the measurements given in the contract for this work, between ‘the dene and cheptour of Glasgw on the tapairt, and Mychell Waghorn, wrycht, on the toder pairt,’ it is evident that the carved canopy work was carried as a cornice across the east or choir side of the screen. Rejecting my work, you state that the screen at Glasgow was probably built by Bishop Cameron, who died in 1446. You have no charter evidence to support you. You have only the mouldings and the sculpture of the two periods to found your opinion upon. In the illustration I send you (Fig. 1) I show the earlier mouldings at A and the later mouldings of the screen at B. Students can now estimate the value of your opinion. The only moulding in the aisle of Car Fergus, of Blacader’s time, is the vaulting rib which I show at C. This, you say, is a ‘coarse’ moulding. But the coarseness is not apparent when you compare it with the rib in the [Illustration: FIG. 1. Mouldings of Rood Screen at St. Mungo’s.]