Chap. IV.
OF ANCIENT BUILDINGS.
207
The section shown in Fig. 12 was taken in the centre of the Basilica, and though it was 5 feet in depth, the natural sub-soil was not
Mould, 20 inches thick.
Rubble with broken tiles, 4 inches thick.
Black dacayed wood, in thickest part 6 inches thick.
Gravel.
Fig. 11.
Section in a block of buildings in the middle of the town of Silchester.
reached. The bed marked "concrete" was probably at one time a floor; and the beds beneath seem to be the remnants of more ancient buildings. The vegetable mould was
