[ 604 ] 
The former, who was an experienced furveyor, mea- 
fured the whole circuit of the wall, with the hight 
of it in fevcral places, as alfo the dimenfions of the 
amphitheatre, while we were on the fpot. And 
the other traced out the fcveral Arcets, and other 
parts of the town, to a confiderable exaftnefs. But 
as only a rough draught of the plan could then be 
taken, 1 left it with them to revife, and tranfmitto 
me an accurate copy j which has been fince done, 
and now accompanies this defeription (a). 
The circuit of the wall on the outflde, as therein 
given by the fcale, contains near one Englifh mile 
and a half; and the fcveral parcels of land contained 
within it amount together to an hundred acres, or 
upwards. Indeed Leland fais, that the compafs of 
the wall is about two miles , and conteyneth 80 
acres (i). And Camden fais the fame, except that 
he calls them Italian miles (2). But neither of 
them acquaint us, from whom they had their mea- 
furement. The wall confifts of nine fides, but very 
unequal j which might perhaps be occafioned by the 
different fituation of the ground, which in fornc 
parts is uneven. 
The materials, that compofe the wall, are large 
flints, and rough ftones of different forts, cemented 
together with very ftrong mortar. And as to the 
manner of building it, the foundation is generally 
made of a row or two of Bones laid flatwife j and 
over 
(1) Itinerary , vol. vi. p. 48, edit. 1744. 
(2) Britann. p. J96, edit. 1607. 
(a) See Tab, III, 
