chorus was perfectly natural. The principal cost of the old
chorus was in the training for the orchestic and melic parts. The
least expensive and the most practically dramatic function was
the last to be given up. The erection of the low stage of Nero
in the theatre at Athens was the first outward sign of the diminu-
tion of the chorus in one of its functions. From that time on it
took its position on the stage as in the Roman theatre. Up to
that time it had occupied the level of the orchestra with the actors.