The altar-screen is very graceful and beautiful, and was originally erected by Lord Neville of Raby in 1380, and much restored in 1876. It was originally painted, and the 107 niches were filled with images. The matrix of an immense brass to the memory of Bishop Beaumont (1318-1333) is seen near the altar steps. It must have been one of the largest brasses in England, and resembles the immense one at Lynn, Norfolk. The choir is paved with mosaics similar to those of the Confessor's Chapel at Westminster.
The magnificent tomb of Bishop Hatfield (d. 1381) is on the south side of the choir. He is habited in his episcopal dress. The outer garment is the chasuble, and beneath it the linen alb or surplice. His hands are covered with episcopal gloves, embroidered on the back; on his left arm is the maniple. The tomb was originally gilded and coloured. Above is the throne erected by him, the highest in England. The monument of Bishop Lightfoot stands opposite.
The _North and South Aisles of the Choir_ are similar in their architectural features to the choir itself, showing the blending of the stately Norman with the graceful Early English work. The monks used frequently to resort to the north aisle, where was a porch having an altar, with a rood and pictures of St. Mary and St. John, where they sang Mass daily. Certain holes in the stone mark the place of the porch, sometimes called the anchorage. Bishop Skirlaw's tomb stood between the third and fourth piers, before the old altar of St. Blaze. His monument has disappeared, but the stone bench remains, erected by him for his almsmen to sit upon. In the _South Aisle_ the doorway of the great vestry remains, though the building was destroyed in 1802. The grave cover of the Prior of Lytham, a cell belonging to Durham, is preserved here. Here also stood the famous Black Rood of Scotland, captured from King David Bruce of Scotland at Neville's Cross (1346).
And now we will enter the _Chapel of the Nine Altars_, at the extreme east of the building. It was commenced in 1242, and the architect was Richard de Farnham, probably a relation of Nicholas de Farnham, then bishop. Prior Melsanby (1233-1244) presided over the erection of the building, and the name of the master-mason is preserved on an inscription: _Thomas Moises_. We notice the nine-lancet windows (under each of which stood an altar separated from its neighbour by screens and partitions of wainscot); the large rose window, "restored" by Wyatt; the beautiful arcade, with its trefoiled arches and deeply-cut mouldings, raised on slender shafts of marble, and surmounted by capitals. The altars were dedicated (beginning on the south side) to St. Andrew and St. Mary Magdalene; St. John the Baptist and St. Margaret; St. Thomas à Becket and St. Catherine; St. Oswald and St. Lawrence; St. Cuthbert and St. Bede; St. Martin and St. Edmund; St. Peter and St. Paul; St. Aidan and St. Helen; St. Michael, the Archangel.