Chapter II

. (see p. 34). In some tombs the floor was paved with flat tiles, and the roof was constructed of arched tiles forming a vault. The flat and square tiles were not used for tombs until a comparatively late period. Some graves had a second layer of tiles to protect the body from the superincumbent earth.[363] We shall have occasion to make further allusion to the use of painted terracotta slabs in Etruscan tombs (