This Aqueduct was commenced in 1753. It is twentyseven miles long, from the sources which supply it to the gardens of Caserta. The sources are at the base of the mountain called Taburno; the principal one is called Sorgente de la Sfizzo; it is afterwards joined by streams from many other sources, which are in the country called

Airola.

These waters are all joined in one Aqueduct, crossing the river Faenza, upon a bridge of three arches, built in 1753.

Again, in the valley of Durazzano, there is another bridge of three arches, upon which the Aqueduct crosses the valley, passing over the river, and extending from the mountain called Santa Agata de'Goti, to the mountain of Durazzano.

This Aqueduct afterwards crosses a deep valley, which it meets between Monte-Longano and the hills Tifata, where ancient Caserta is situated, about the place called Monte di Gazzano. The crossing of this valley required the most important of all the constructions connected with the work. It was accomplished by an Aqueduct bridge, 1724 feet long and 190 feet in height, composed of three tiers of arches, one above another. The lower range has nineteen arches, the middle twenty-seven, and the upper one forty-three; makin all eighty-nine arches.

The labor of constructions under ground for this Aqueduct was more than that above; it pierced through five hills or mountains, making an aggregate length of tunnel of about four miles, and most of this was through rock.

To give air and light to the channel, they made pits or wells ; some of which were 250 feet deep, 10 feet diameter at the bottom, and 4 at the top.