The wall space thus framed in contained sometimes a single scene and sometimes two scenes, one above the other.

The wall must be very lofty, if this number is exceeded.

Figures and inscriptions were widely spaced, and the scenes succeeded one another with scarcely a break.

The spectator had to discover for himself where they began or ended.

The head of the king was always studied from the life, and the faces of the gods reproduced the royal portrait as closely as possible.