side, the whole row of the pillars
and arches of the chapel, and some traces of a clerestory, still remain.
On the wall are some traces of paintings, which are too faded to be
deciphered. Such of the pillars and arches of the hall as still survive
are strongly coloured by the great fire of 1174, in which Prior Conrad's
choir was destroyed.

[Illustration: RUINS OF THE MONKS' INFIRMARY.]

[Illustration: THE BAPTISTERY TOWER.]

Westward of the infirmary, and connected with St. Andrew's tower, stands a
strikingly beautiful building, which was once #the Vestiarium, or
Treasury#: it consists of two storeys, of which the lower is open on the
east and west, while the upper contained the treasury chamber, a finely
proportioned room, decorated with an arcade of intersecting arches.

An archway leads us from the infirmary into what is called the Dark Entry,
whence a passage leads to the Prior's Gate and onward into the Prior's
Court, more commonly known as the Green Court: this passage was the
eastern boundary of the infirmary cloister. Over it Prior de Estria
raised the _scaccarium_, or checker-building, the counting-house of
the monastery.

Turning back towards the infirmary entrance we come to #the Lavatory
Tower#, which stands out from the west end of the substructure of the
Prior's Chapel. The chapel itself was pulled down at the close of the
seventeenth century, and a brick-built library was erected on its site.
The lavatory tower is now more commonly called the baptistery, but this
name gives a false impression, and only came into use because the building
now contains a font, given to the cathedral by Bishop Warner. The lower
part of the tower is late Norman in style, and was built in the latter half
of the twelfth century, when the monastery was supplied with a system of
works by which water was drawn from some distant springs, which still
supply the cathedral and precincts. The water was distributed from this
tower to the various buildings. The original designs of the engineer are
preserved at Trinity College, Cambridge. The upper part of the tower was
rebuilt by Prior Chillenden.

From the lavatory tower a covered passage leads into the great cloister,
which can also be approached from a door in the north-west transept. The
cloister, though it stands upon the space covered by that built by
Lanfranc, is largely the work of the indefatigable Prior Chillenden. It
shows traces of many architectural periods. The east w