The ancient scenery at first consisted of mere boughs, but afterwards of tapestry, not painted canvas. The Greek stage consisted of three parts, the _scena_, across the theatre, upon the line of the curtain in our theatres; the proscenium, where the actors performed; and the post-scenium, the part behind the house, before-mentioned. To form parts of the scenes there were prisms of framework, turning upon pivots, upon each face of which was strained a distinct picture, one for tragedy, consisting of large buildings, with columns, statues, and other corresponding ornaments; a second face, with houses, windows, and balconies, for comedy; a third applied to farce, with cottages, grottoes, and rural scenes. There were the _scenae versatiles_ of Servius. Besides these, there were _scenae ductiles_, which drew backwards and forwards, and opened a view of the house, which was built upon the stage, and contained apartments for machinery, or retirement for the actors. As to the patterns of the scenes, in comedy, the most considerable building was in the centre; that on the right side was a little less elevated, and that on the left generally represented an inn. In the satirical pieces they had always a cave in the middle, a wretched cabin on the right, and on the left an old ruined temple, or some landscape. In these representations perspective was observed for Vitruvius remarks (C. 8) that the rules of it were invented and practised from the time of Aeschylus, by a painter named Agararchus, who has even left a treatise upon it. After the downfall of the Roman Empire, these decorations of the stage were neglected, till Peruzzi, a Siennese, who died in 1536, revived them. There were three entries in front, and two on the sides; the middle entry (termed the Royal door) was always that of the principal actor; thus, in tragedy, it was commonly the gate of a palace. Those on the right and left were destined to the second-part players, and the two others, on the sides, one to people from the country, the other to those from the harbour, or any public place.