l space was thus left clear. This method of extension of the
church by adding north and south chapels to the nave was pursued
throughout the middle ages. The thirteenth century plan of Acton Burnell
is virtually identical with the tenth or eleventh century plan of
Worth. In aisled churches, such transeptal additions are simply
outgrowths of the aisle walls, and were not necessarily planned with any
regard to the spacing of the arcades of the nave. They may, of course,
be placed symmetrically at the east end of the aisles, the width of each
chapel corresponding to the width of the arch of the arcade which is
opposite its opening. Thus Exton church in Rutland, rebuilt about the
beginning of the thirteenth century, has north and south transeptal
chapels whose width is that of the eastern bay of each arcade. A
transverse arch was thrown across each aisle at its junction with the
adjacent chapel. Here the chapels form quasi-transepts in perfect union
with the design of nave and aisles. Symmetrical plans in which it is
clear at a glance that the transeptal chapels are developments of the
aisles, and have no necessary relation to the nave, are those of
Kegworth in Leicestershire, rebuilt in the fourteenth century, and
Aylsham, Cawston, and Sall in Norfolk, which belong to the fifteenth
century. But even more obvious than these are the plans in which
transeptal chapels have been thrown out at different periods, or even at
one and the same period, without the least regard to symmetry. A small
aisleless nave at Stretton in Rutland received a north aisle about the
beginning of the thirteenth century. Soon after, the eastern part of the
side walls was taken down, and chapels built out to north and south. The
width of the south chapel was determined by that of the old chancel
arch, which was rebuilt between the chapel and the nave, there being no
aisle on that side. The north chapel, on the other hand, was formed
simply by returning the wall of the aisle northward, and throwing a
transverse arch across the aisle from the wall above the arcade. Its
width corresponds roughly with that of the south chapel, but has no
correspondence with that of the adjacent bay of the arcade. Examples of
this form of growth of plan, dictated by convenience and the necessity
of the moment, are common in every part of England.

Sec. 60. It is quite clear that the transeptal chapel, being nothing more
than an excrescence from the wall of a nave or aisle, i