this
era." [15]

[15] See the Wykeham motto on the lady-chapel vault decoration, page
92.

[Illustration: THE BELL TOWER AND SPIRE AS SEEN FROM WEST STREET.
_Photochrom Co., Ltd., photo._ ]

He also said "that the spire itself was commenced before the death of
Bishop Neville. The moulding in the angles cannot, I think, have
originated later"; and "that the early work extended to about forty
feet above the tower; all the pinnacles and canopies at the base of
the spire and the upper part of the spire, were insertions and
rebuilding of one hundred years later. At the base the work of the
earlier period had had its face cut away to bond in the later work,
and the masonry of the two periods did not agree in coursing."

The mere fact that the detached tower was built suggests many
questions which are not easily solved. Why was it at all necessary?
Perhaps the cathedral bells hung in the south-west tower, and those of
the sub-deanery church in the other, or _vice-versa._ At all events,
we know that in the fifteenth century the sub-deanery church was
removed from the nave to the north arm of the transept. The great
window of the north end of the transept is also early fifteenth
century in date, and the detached tower likewise. Angle turrets were
placed upon the four angles of the transept during the same century;
and if Daniel King's drawing of 1656 is any guide, the tops of the
central and western towers had battlemented parapets added during the
same period. In any case, it appears that it took much longer to
complete the repair of the central tower than that at the south-west.
In fact, it is doubtful whether the former was finished until about
the end of the thirteenth or the beginning of the fourteenth century,
for its fall apparently wrecked much of the vaulting of the transept;
and this, from the character of its moulded and carved vaulting ribs
in the south arm of the transept, is of the same date as the rose
window in the east gable of the presbytery, the rose windows in the
east gables of the lady-chapel and the chapels at the east end of the
north and south aisles of the choir. This argues that at the end of
the thirteenth or the beginning of the fourteenth century, during
Bishop Leophardo's episcopate, these works were completed.

About the middle of the fifteenth century a stone rood screen was
built up between the western piers of the central tower. It thus
separated the choir under the crossing from the n