[ 77 6 ] 
Vefpafian is {till in being, and has been meafured by 
feveral learned men ; but the foot derived from it 
exceeds thofe on the marbles, and the greateft num- 
ber of the foot-rules, fo much, that Mr. Greaves 
could find no better way of accounting for fo great a 
difference, than by fuppofing what Feftus and Fan- 
nius fay (for he does not quote Frontinus), to be a 
vulgar error (2) : whereas the name of this ftandard 
{hews its figure to have been a cube (?) ; which adds 
probability to their teftimony, that its fide was intended 
for the meafure of the foot. 
The meafures of public roads in the itineraries, 
can be of little ufe in this enquiry ; for they omit 
fra&ions, and we do not know whether the diflances 
of the towns are reckoned from the market-places or 
from the gates - y but a difference of half a mile in 
fixty, is equivalent to the tenth part of an inch in 
the foot : therefore, no exadt meafure is to be ex- 
pected from thence, even though the modern men- 
surations of Caffini, Riccioli, and others, were more 
unexceptionable than they really are. 
trimodia [read, amphoram trimodiam]. Frontinus, in Expofi- 
tione Formarum. Though the paflage is corrupt, there can be no 
doubt of the meaning. 
Pes longo fpatio latoque notetur in anglo, 
Angulus ut par fit quern claudit linea triplex ; 
Quattuor ex quadris medium cingatur inane. 
Amphora fit cubus : quern ne violare liceret, 
Sacravere Jovi, Tarpeio in monte, Quirites. 
Rh. Fannius, de Pond, et Menf. 
(2) See Dr. Birch’s edition of Greaves’s Works, p.228. 
(3) Quae illi wfrf, nos quadrantalia dicimus. A.Gellius, 1. 1 . 
c. 20. 
The 
