portion of that circle. None of the existing theatres coincide exactly with the rules laid down by Vitruvius. Sometimes the stage stands further back than he directs, as at the Peiraeeus. Sometimes it reaches further forward, as at Megalopolis. But in most cases the deviation is very slight, and his description, taken as a general statement, may be regarded as approximately true. The fact is instructive. The largeness of the space allotted to the orchestra by the arrangement above described enables us to realize very clearly the subordinate position of the stage in Greek theatres. [Illustration: _To face p. 104._ FIG. 7. THEATRE AT EPIDAURUS, FROM THE NORTH-EAST.] Vitruvius in the above account uses the word ‘orchestra’ in its ordinary sense, to denote the whole space included within the border-line of the auditorium. But we may limit the meaning of the word, and confine it to the actual dancing-place, excluding the gutter which usually ran inside the auditorium. If this is done, it will be found that in many Greek theatres the circumference of the orchestra, when prolonged, forms a complete circle, without touching the stage. The theatre of Epidaurus (Fig. 6) offers a good example.[359] The dancing-place is here surrounded by a circular kerbstone, fifteen inches wide, which only reaches within a yard of the stage-buildings. It has been contended that all Greek theatres were constructed on this principle; that the stage was pushed back sufficiently far to allow the orchestra, in its narrower sense, to form a complete circle. The line of the orchestra might be marked out in stone, or it might not; but there was always room for it.[360] This, however, is an exaggeration. There are many Greek theatres, such as those of Delos, Assos, and Sicyon, in which the circle of the actual dancing-place could not be completed without encroaching upon the stage.[361] At Megalopolis (Fig. 11), if such a circle was completed, about a third of it would be intersected. Here the orchestra was unusually large, and the stage was therefore brought further forward, in order to be within a reasonable distance of the auditorium. These examples show that the Greeks had no pedantic feeling on the subject of the orchestra circle. No doubt in ancient times, before the development of the drama, their orchestras formed complete circles; and possibly they were enclosed all round with a kerbstone. The old orchestra at Athens seems to have been so encircled. But when regular theatres with stage-buildings began to be erected the architects appear to have discarded the stone border, and with it the imaginary circle, and to have contented themselves with allowing a sufficient space for the chorus, according to the requirements of each particular theatre. In many cases, as it happened, they left room enough for a full circle. At Epidaurus such a circle was actually marked out in stone. But this is the only known example; and there are several theatres in which the stage was so