» 
2jo Dr* Falconer's Remarks , &c. 
covery} but it appears to be by no means fb: 
and that the Aquaeduds built at fuch vaft expence 
for the conveyance of water, were not con- 
ftruded for want of knowing, that pipes would 
anfwer a fimilar purpofe, but from the perfua- 
fion, that the water 3 in pipes of lead efpecially, 
was lefs wholefome, than water conveyed in an 
open channel. This appears very clear, from 
the following pafifage in Palladius. * “ Si quis 
mons interjedus occurrerit, aut per latera ejus 
aquam ducemus obliquam, aut ad aquse caput 
fpeluncas librabimus, per quarum ftruduram 
perveniat. Sed fi fe vallis interferat, eredas 
pilas, vel arcus ufque ad aquae jufta veftigia con- 
ftruemus, aut plumbeis fiftulis claufam dejici 
patiemur, et explicata valle confurgere. Ulti¬ 
ma ratio eft, plumbeis fiftulis ducere, quae aquas 
noxias reddunt.” Vitrivius f exprefles the fame, 
though in terms rather more obfcure ; and Pliny| 
gives particular directions on the fubjed, 
* Pallad. Menf. Auguft. 
+ Vitruv. L. VIII. C. 7. 
t L. XXXI. C. 6. 
