[ 820 ] 
difference, provided the correfpondent parts were 
made to anfwer to each other : and it is highly im- 
probable that fuch odd meafures as the paffus want- 
ing a digit, 6 feet wanting the fame, and 3 feet 
wanting half a digit, fhould be fo often repeated in 
fo large a building, and in places that do not feem 
to require any fuch precife exadtnefs. Therefore thefe 
meafures muff have been whole feet, and the divifors 
are rightly affumed. 
Their mean is 5)64,1 London parts, which exactly 
agrees with that found above from all the meafures 
taken together. 
The other remains of antiquity contained in this 
work are fuch fragments as can be be of little ule in 
the prefent enquiry. 
CONCLUSION. 
It appears from the meafures of thefe buildings, 
that the Roman foot before the reign of Titus ex- 
ceeded 970 parts in 1000 of the London foot, and 
in the reigns of Severus and Diocletian fell fhort of 
9 <> 5 - 
Whether this difference pr'oceded from any al- 
teration in the ftandard, or from a falfe meafure of 
it being got into common ufe, either before the reign 
of Titus or after, is uncertain. 
We have no account of any alteration made by 
law in the Roman ftandards after the Plebifcitum 
Silianum, quoted by Feftus (9); but as great a dif- 
ference as this might arife from their having been loft 
or deftroyed. 
(9) Cnder the words Publica pondera. 
4 
They 
