h they enlarged. This
accounts for the large number of handsome Norman doorways which remain
in the walls of aisles obviously later than the doorways themselves. At
Birkin in Yorkshire, the south aisle was not built till the middle of
the fourteenth century, but the doorway was removed to its new position
from the wall of the aisleless church. One very exceptional case occurs
at Felton in Northumberland. Towards the beginning of the thirteenth
century, the west part of the south wall of the church was cut through,
a chapel was added, and, east of the chapel, a porch was built. Rather
more than fifty or sixty years later, it was determined to add a south
aisle the full length of the nave. The width of the aisle was taken from
that of the existing chapel and porch. To connect the chapel with the
new work, the side walls of the porch were cut through. The outer
doorway of the porch became the new south doorway, while the inner
doorway was kept unaltered, as an arch in the new arcade.

Sec. 49. Features which have been touched upon in connexion with Raunds
bring us to two new features in the plan--the rebuilding of aisles and
the lengthening of churches westward. In most parish churches, aisles,
when they were added at first, were extremely narrow. The west wall of
Hallaton church in Leicestershire, for example, shows that, in the
fourteenth century, originally narrow aisles were heightened and
widened. The roof lines of the earlier aisles remain; they were clearly
under the same roof as the nave of the church, and had very low side
walls. This was not always the case. At Raunds the thirteenth century
south aisle was always broad and lofty, and must have had its own roof
from the first. And, as the principles of Gothic construction became
more familiar, and the larger churches began to exercise a more
wide-spread influence upon the parish church, aisles began to increase
in breadth and elevation. The small and narrow windows of churches of
the twelfth and early thirteenth centuries gave way to the broad
mullioned and traceried windows of fully developed Gothic work. For
these, with their advantage of increased light, more headway was
necessary. Aisle walls were consequently heightened or altogether
rebuilt. The acutely pointed roof of the nave could no longer be
continued downwards to cover these higher aisles. The aisle was
consequently covered with a lean-to roof, or with a separate gabled roof
of its own. A free increase