This Aqueduct was built in connection with an ancient Causeway, which led to Civita-Castellana.
This Causeway was about 820 feet long and 32 feet wide; the greatest height was about 130 feet. It was pierced in the middle of this extent, by nine large arches; three of which were 86 feet span, and the others were each 64 feet span. Above these arches of the bridge the Aqueduct is built, the height of which is about 57 feet, and it is sustained upon a series of arches of about 19 feet span each.
Aqueduct of Montpelier.
This Aqueduct is one of the most beautiful works of the kind, which exist in France. The length is about 3,200 feet; it conducts to Montpelier the waters of Saint Clement and du Boulidou. It was built by M. Pitot, engineer and member of the Academy of Sciences. He was thirteen years constructing it. This Aqueduct is formed by two ranges of arches; those in the lower tier are seventy in number, and each 28 feet span; the piers of these arches are each 12 feet thick. The arches of the second or upper tier are much smaller, and are arranged so that three of them come within the space occupied by one of the lower arches. They are 9 feet diameter; their piers are 4 feet and a quarter thick.
The greatest height of this Aqueduct is 90 feet.
It is constructed entirely of cut stone. The quantity of water furnished by it is about 300,000 gallons in twenty-four hours.
Aqueduct of Spoleto.
This Aqueduct was constructed in the year 741, by Theodoric, King of the Goths, to communicate with the town of Spoleto, situated upon the summit of a mountain. It is composed of ten grand Gothic arches each 71 feet diameter, supported upon piers of 10½ feet thickness. The middle arches which are over the river de la Morgia, are about 328 feet high.
Napoleon Gimbrede. sc.