[ Soo ] 
Adrian (8). But it does/not feem to have been to- 
tally deftroyed either time ; for the infcription of Se- 
verus fays, it was “ vetuflate corruptum;” which 
could hardly be true, if it was entirely rebuilt by 
Adrian, who began his reign but feventy-fix years be- 
fore Severus; but is very applicable to a building that 
had flood above 200 years, and been twice damaged 
by fire. Neither does it feem pofiible, that a building 
of this fize and folidity, without any timber in it, 
except the roofing of the portico, fhould be totally 
conlumed by the fire of the neighbouring buildings. 
Therefore, we may fuppofe the meafures of the prin- 
cipal parts of it to be according to the foot of the 
Auguflan age. 
If the execution of this noble building had been 
anfwerable to the beauty of the defign ; the multi- 
plicity of its parts, and the accuracy with vyhich 
Defgodetz has mealured them, would have afforded 
ample materials for the difcovery of the fooy by 
which it was conflrudled : but the dimenfions of fuch 
parts of it as fhould be equal to each other, difici fo 
widely, that fcarce any but the prime meafuies aie 
to be depended on. 
Thefe were, probably, the diameter of the circle 
palling through the centers of the columns within ; 
for on this, the diameter of the cupola depended ; 
and the diameter of the whole building, from out to 
out. 
Defgodetz has given twelve meafures of the dia- 
meter within the fhafts of the columns. The mean 
from them all, is 133 feet 27 inches Paris meafure : 
(8) Spartianus in Adriano. 
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