In this connection, we may notice an ancient Roman aqueduct, the arches
of which may still be seen by the tourist as he approaches the “eternal
city;” and a view of which is given in the cut on the next page. It
reminds us, in its general outlines, of the Pont du Gard which has just
been described, except that the latter has three tiers of arches while
this has but two; and the styles of architecture in the two are
different. These immense structures, carried for miles over valleys and
through hills, were reared by the ancients at the cost of vast expense
and labor, that they might supply themselves with pure water for
domestic and public uses. And their ruins still bear witness to the
gigantic scale on which such works were planned and completed, at an age
and among a people that we are accustomed to think of as far inferior to
our own.