RAPHAELIS FABRETTI Vrbinatis de Aquk 
qudiduEiibm veterk Rom<^e Difertatioms tres in 
Quarto Rom£^ 1680. 
I. npHe firft Difcourfe of the noble and ingenious Fahretti 
A reprefents the Art and Grandure of the AquaduChus 
Alexandrim/s^ which taking name from Se'verus the Emperor, 
a« Spartianm affures, runs obliquely for a good Foundation, 
yet loftily^in moft places upon an Arc LXX- foot high.through 
Frocoio di Pantano between the Via Lahkana and ?r<itmjiina^2iTdi by 
the noble Sepulcher of the faid Emperor and his Mother.unto 
the Vineyard of the Carthufans'm the C/f/^at 1 4 miles diftance from 
its Fountain. The Du^ or s^ecm is 1 1 foot broad, 4-2- high, 
) and thick in the fides 25, admitting in divers places an .aperture 
ot Bi eath-hole made of Tofmszl foot fquare : and is fuftein'd 
by fquare Piles of Brick , 8 foot thic^^ , well cemented 
and inwardly polifht s and cover d with an Arc of the fame 
matter 1 2 foot over, 
2 The fecond Diflertation, which treats of ^l^ua Mania and 
Claudtay is opportunely prefac t with the meafure of the Old 
Roman Foot : which this Learned Itahan afferts to be the Fes 
CarjitQlinm^ that L- Foetm procur'd, more than an hundred years 
fince, to be expreft on a marble Table in the Capitol, toge- 
ther with the F.oman Palm of nine inches, and the Canna Ar~ 
chiteblonica of ten Falms^ and the Dtcemfeda or Rod of ten Foot, 
Our Author comparing the two laft together, found the Mo- 
dem or Architectonic Palm tO make near 9 \i inches of the Ancient 
Roman Foot, the Canna Architect cmca reaching tO 77 Fcot of the 
eld Decern feda : and confequentlv that a Roman Mtk, or yooo 
Foot^ contains near 660 5 of the ?nodern Cannae y not (jo 7 Canna^ 
as L //o/ile^^i^i^ eftimates in his Difcourfe F>e miliart) Aureo^ mi- 
ftaking the modem Roman Palm for juft | of the Antique Roman 
fW. .. Much lefs will d 50. C^^;^.^ of th^ Lattr Surveiors extend 
to the length of an old Roman mile^ as l» Patm computed. But 
the meafure of the Pes Cafttolimis on the marb'e Table fo re- 
mention d, (and not the Print of it v. 8 8 L, Pm demenfidrzs^ 
too fcanty by | of an inch, ) is fufficiehtly confirmed by three 
^ joynted Braf-Feet found in different places, and by feveral Bricks, 
carrying one Foot in length, and an half in bredth, taken up 
from the Ruins in Fm Ofiknfi and in divers other places. 
Where- 
