likely AEschylus,
Euripides, Sophocles and Aristophanes.

The curved pediment of the central archway runs up into this
story and is broken in the middle by a tablet bearing the
inscription "Prodesse et Delectare," which is flanked by two
reclining genii holding garlands.

Above these are two busts on brackets, Thespis and Epicurus,
or possibly Epicharmus. The space directly above this
pediment is occupied by a window-like opening five by four
feet, the traditional Elizabethan music-room, in all
probability, which, Mr. W.J. Lawrence has shown us, occupied
this position both in Shakespeare's day and for some time
after the Restoration; an arrangement which was revived by
Mr. Steele Mackaye in the Madison Square Theatre, and
originally in the first little Lyceum, New York, both now
pulled down. The pyramidal pediment above this opening
projects above the upper cornice into a coved ceiling, which
would appear from the rendering of the drawing to form an
apse above the semi-circular stage. Behind the _proscenium_
is a large space with staircases of approach, two windows at
the rear, and apparently a fireplace for the comfort of the
waiting players. Communication with the front of the house
is provided by a door in the proscenium wall opening into
the stage door lobby, whence the outside of the building may
be reached.

There is no indication of galleries, unless some marks on
the angles of the front wall of the balcony may be
interpreted without too much license into the footings of
piers or posts to carry one; the total interior height shown
in the elevation from what I have assumed to be the floor of
the pit to the ceiling being only twenty-eight feet, there
would hardly have been room for more than one. The only
staircases which could have served it are at the rear of the
building in the corners behind the stage wall....

The general dimensions would appear to be:

Total width of the auditorium 58 ft.
Total width of the pit 36 ft.
Total width of the front stage or "apron" 35 ft.
Total depth of the stage from the railing to
the centre of the _proscenium_ 16 ft.
The entire building is 58 feet square inside, cut to
an octagon of 28 feet each