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CHAP. VI.

OF THE PLAN OF THE THEATRE.

The plan of the theatre is thus determined. A circle isdescribed whose perimeter incloses the intended area of theorchestra; and four equidistant and equilateral triangles areinscribed in it, which touch the perimeter and divide it intotwelve equal portions. The same method is practised bythose versed in astrology, in dividing the zodiac into twelveconstellations; from the belief that a musical concordanceexists in the dispositions of the stars. The side of one ofthe triangles nearest to the situation which the scene isintended to occupy determines the line of its front; anotherline is drawn parallel to this through the centre of the circle,dividing the pulpitum of the proscenium from the orchestra.This method of determining the divisions renders thepulpitum of the Roman theatre more spacious than thatof the Grecian; for with us all representations take placeupon the stage, and the orchestra is appropriated to theaccommodation of the senators. The height of the pulpitumought not to exceed five feet, in order that what is passing onthe scene may he distinctly seen by those in the orchestra.

The different ranges of seats allotted to the receptionof the audience are separated by staircases: the positionsof those which give access to the first praecinction aredetermined by the points made by the angles of the triangles

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