divided the chapel from the rest of the church, and in this enclosure there was "an altar with a fair alabaster table above it, where Mass was daily celebrated." Traces of the colouring which once adorned this beautiful chapel can still be seen. Leaving the nave, we enter the _Transepts_, which were part of Carileph's work. The large window in the north transept was inserted by Prior Fossor (1341-1374), and is in the Decorated style. Prior Castell in 1512 restored the window, and filled it with coloured glass representing the four doctors--SS. Augustine, Ambrose, Gregory and Jerome. Hence it is known as the Window of the Four Doctors. In the south transept is the large Perpendicular _Te Deum_ window, erected about 1450. Some of the glass is ancient, but the greater part was inserted in 1869 in memory of Archdeacon Thorp. Altars stood formerly in the aisles at the north and south extremities of the transepts. Traces of colour may still be seen, and the remains of some brackets which contained sculptured figures. Chantrey's fine monument of Bishop Barrington (1791-1826) stands in the south transept. The whole of the lantern _Tower_ is of the Perpendicular style, and was probably built by Prior Bell (1464-1478). A gallery surrounds the lower stage, supported by grotesque heads. The Tudor flower ornament may be observed on the string-course over the panelling. The screen is modern, and was designed by Sir Gilbert Scott. Passing into the choir, the earliest part of the building, we see the Norman work of Carileph blended with the later Early English style. As we have already noticed, the east end of the Norman church terminated with apses. These were subsequently removed. The whole choir comprehends four pillars on each side, two of them clustered and two round, the latter of which are cut in a spiral form. The roof was new vaulted by Prior Horton, who succeeded in 1289, the ribs of the vaulting being decorated with the dog-tooth mouldings. The work around the altar is all Early English. Clustered pillars divide the nine altars from the choir, decorated with foliage. In the year 1650 a large number of Scottish prisoners were confined in the Cathedral, who did much damage to the internal fittings. In order to gain fresh air, or for love of mischief, they broke most of the windows, and the holes in the floor in the south transept show where they made their fires for cooking their meals. Another mark of their presence was the destruction of the woodwork of the choir, which they doubtless used for firewood. At the Restoration Bishop Cosin erected the present stalls. The _misereres_ are worthy of remark--lions, mermaids, monsters, apes, peacocks and dolphins being the most striking subjects. The modern lectern and pulpit are both very beautiful, the former being designed after the ancient lectern described in the _Rites of Durham_.