ns, and the Bishop was _ex officio_ prior of the monastery.
Of the conventual buildings erected by Bishop Robert nothing remains.

The Cathedral was erected from east to west in about 115 years.[43] The
work was commenced by Bishop Arnold in 1161, was continued by eleven
successive bishops, and was consecrated by Bishop Lamberton in 1318.
During its progress in 1276, the eastern end was greatly injured by a
violent tempest, and in 1378 the Cathedral suffered from fire, which
according to Wyntoun destroyed the south half of the nave from the west
end, and eastward to and including the ninth pillar. The restoration was
begun at once by Bishop Landel (1341-1385), and completed in the time of
Bishop Wardlaw (1404-1440), who in 1430 improved the interior by the
introduction of fine pavements in the choir, transept, and nave, and by
filling the nave with stained glass and building a large window in the
eastern gable. The south wall of the nave extends considerably westwards
beyond the present west end, and contains the remains of a vaulting
shaft, leading to the inference that the Cathedral was originally of
greater length than it now is by at least 34 feet. The north wall of
nave also projects westwards about 7 feet. There is a difficulty in
connection with the west front, and it is regarded by competent
authorities that this wall was not part of a western porch, but
"indicates that there has been a change in the design, and that the
original intention of having a wide porch extending along the whole of
the west end has been departed from after the first story was built up
to the level of the above string course, all above that point being of
later design and execution."[44]

The early chapter-house was 26 feet square, and was vaulted with four
central pillars. It opened to the cloisters, and the doorway is
pronounced to be in the purest style of early pointed architecture.[45]
Bishop Lamberton (1298-1328) erected a new chapter-house, and the old
one was made a vestibule to the new. South of the early chapter-house
was probably the fratery; on the upper floor of this building and the
chapter-house was the dormitory--a wheel-stair leading to it from the
south transept. On the west side of the cloister was the sub-prior's
house, known also as Senzie House; south-east of the fratery is the
prior's house or Hospitium Vetus, which was sometimes the residence of
the bishop. West of the cathedral are the remains of the entrance
ga