Plate I. 
- 
[ 32. ] 
ment of architeQure whatever appears to have been made ufe 
of on the outfide, nor in the part of the theatre allotted to the 
fpeCtators, though probably the whole on the infide was covered 
with cut ftone, if not with marble, and the {cena ornamented with 
columns, of which however no remains appear. 
As to the ftruéture, it feems in fome meafure to correfpond with 
the rules laid down by Vitruvius for Roman theatres, as I find 
that by infcribing the four equilateral triangles* ACB, GHI, 
MKL, DFE, in a circle whofe diameter FI is equal to the 
diameter of the orcheftra, in the triangle ACB the fide AB, 
which is parallel to the fcena, determines the front of it: A line 
FI drawn through the centre and parallel to AB feparates the 
pulpitum from the orcheftrat: The points Kt and L determine 
the entrances 44 to the firft clafs of benches, and the length of the 
fcena§S MR is double the diameter of the orcheftra, according 
to 
* Ipfus autem theatri conformatio fic eft facienda, uti quam magna futura eft peri- 
metros imi, centro medio collocato, circumagatur linea rotundationis, in eaque qua- 
tuor fcribantur trigona paribus lateribus, et intervallis, que extremam lineam circina- 
tionis tangant. Vitr. Lib. 5. Cap. 6. 
+ Ex his trigonis cujus latus fuerit proximum fcenz, ea regione, qua precidit cur- 
vaturam circinationis, ibi finiatur {cenz frons, et ab eo loco per centrum parallelos linea 
ducatur, quz disjungat profcenii pulpitum, et orcheftre regionem. Vitr. ibid. 
+ Cunei fpectaculorum in theatro ita dividuntur, ut anguli trigonorum, qui currunt 
circum curvaturam circinationis, dirigant afcenfus fcalafque inter cuneos ad primam 
precinctionem. Vitr. ibid. 
§ Scenz longitudo ad orcheftree diametron duplex fieri debet. Vitr. Lib. 5. Cap. 7. 
eth tds 
