( ) 
from the Method by him prefcrib’d muft be) aloft : be- 
caufe for fuftaining thofe f«h dio, he oidcrs the work un- 
derneath to be well fecur'd, with two lays of Plank that 
(hould crofs (rr) each other, and be nail’d down ; then 
the Statumtmtio or Pirching, the Mortar^ Terrace and 
Tepr^, as before on the Ground, but bccaulc by fuh 
dio Vitruvius could not defign Chambers ; and although 
Flitiy informs us the Grxeiam us‘d ( x ) lo cover or flat- 
roof their Houfes with thefe Pavements; yet fmee nei- 
ther Vitruvius nor Plir.) mention any luch Mode prevail- 
ing in their times at Rcme\ it remains, that we may 
imagine Suh dio, or the Subdi^Iia of P'itruviiu, to mean 
Pavements mounted on Pillars or Arches, which might 
afford delightful Terraces out of the upper Rooms, and 
lhady Piazzas underneath: and in this Senlc perhaps 
may be underllood the Porticos Pavim>:ntata of 7«//y 
above-mention’d. By the many Apartments, the Found- 
ations about thefe Works point out, there feems to 
have been nothing wherein the Buildings that once flood 
there, might come fhorc of the magnificent Strudlures, 
wherewith the Romans delighted to gratify their Luxury. 
The ufes each were dcfign’d for, is not to be deter- 
min’d: whether there was a Piazza cover’d with a Li- 
thofrotott, cannot be affirm’d. But be that as it will; 
*tis next to Demonflration, there was fomc upper Floor 
fuflain’d by Wood, and pav'd with the Tejfer£, after 
the fame manner as Pltravius directs ; and, on the 
Brick Pavement (lafl difeover’d), the Coat of Afhes and 
Wood Coals with Nails, cover’d with large pieces of 
the Rudus, and great lumps of the Tcffer^ well cemented 
( w) Ibid, itaqne fi neceffitas coegerit, ut minime vitiofa fiant fic erit 
faciundum: cum coaxatum fuerit, fuper altera coaxatio tranfverfa fter- 
rvatnr, clavifque fixa, SPr.-- »-Statuminatione fafta rudus inducatur, &c, 
C ;r ) Plin, Hift. Lib. XXXV. Cap. XXV. Subdialia Grsci invencre tali- 
fcoj domuscontegentes. 
together 
