A reference to the plan will best locate the cloister, but it will be noticed that the massive western buttresses, which take the thrust of the nave, show traces of the cloister wall. Also the wall-arcade and vaulting-springers are visible on the south wall of the chapel of St. Mary’s. The sacristy to the chapel, which has a piscina, was over the eastern alley, and under this can be seen the lines of four bays of the cloister and part of a fifth. Apparently the east side of the cloister was never completed, as the buttresses show no sign of additions; therefore, although a covered way was obtained between the cathedral and college, the north door remained as a separate entrance from the prebendal and other houses. The crypt[90] on which the chapel stands is roofed with a simple elliptical barrel-vault and rear arches of small lights cut into it on the northern side. Below the tower was the cloister entrance, but the steps up to the chapel have quite disappeared. The landing at the top of these steps and two bays to the north formed an ante-chamber to the chapel, and a turret-stair on the northern or garden side led down to the domestic buildings as well as to a room over the vestibule. This room had two windows, one of which looked into the chapel, as at St. Cross. It will thus be seen that there could not have been a west window. The chapel is in four bays, but as the eastern bays were utilised, on the north by the existing recess for the founder’s tomb and on the south by the sacristy, there are only three windows. The great east window--as well as others--was denuded of much ashlar-work and tracery to help in Nash’s extraordinary concoction the west window of the cathedral.[91] This great east window filled up almost the whole of the wall, and must have been a fine example of the best sort of Perpendicular. Indeed, it would not be impossible to reconstruct it even now. There is a legend (found by Browne Willis in an Elizabeth manuscript) that Houghton was excommunicated by the Pope Clement, and that he retaliated by returning the compliment, and further pictorially displayed the event in stained glass.[92] Clement died, however, in 1352, before Houghton was made bishop, but was succeeded by Innocent VI. The names may thus have got confounded, or the Pope may have been the Anti-Pope, Robert of Geneva, known at Avignon as Clement VII. Although the story is of doubtful authenticity it is quite in accord with Houghton’s vigorous character, being as he was the friend of Chaucer and John of Gaunt. He also established several ordinances for the diocese, which shows that he was no mere figure-head. He held the office of chancellor for two years.[93]