angles of the triangles inscribed in the circle bounding the 
orchestra: the positions of those in the second cavea, were 
intermediate between every two in the first. The staircases 
of the theatre of Marcellus appear to have had a disposition 
nearly similar, although not correctly so. The five remaining 
angles determined the position of the several parts of the 
scene: the middle one was opposite the doors called regiae; 
those on the right and left of that were over against the 
hospitalia; and the remaining two faced the entrances which 
were situated in the two returns of the scene. 
a.a.. Passagestotheorchestra. k.... One of the door-ways 
termed hospitalia. 
b.b.Staircases to the first 
L..,Oneoftheitineraversurarum. 
cavea. 
c.c., Staircases to the second m..The first praecinction. 
n...Second praecinction. 
cavea. 
o...Third praecinction. 
d.d.Staircases to the third 
p... Portico. 
cavea. 
q.. Plan of half the roof of the 
e.... Orchestra. 
scene. 
f..... Pulpitum. 
r.r. Walls against the horns of the 
g.g. Front of the scene. 
cunei. 
h....One of the scenes termed 
s....A column and pilaster 
periacti. 
belonging to the return 
i.....Doors called regiae. 
of the scene.