composed of ten grand Gothic arches each 71 feet diameter, supported upon piers of 10^- feet thickness. The middle arches which are over the river de la Morgia, are about 328 feet high.

On the top of this bridge is the Aqueduct which carries the water to Spoleto.

This structure was difficult to execute, and being built of a very hard stone, remains entire at the present day.

The total length is 800 feet, and the breadth is 44 feet.

The greatest height of this bridge is 420 feet.

Aqueduct of the Prince of Biscari.

This Aqueduct was constructed by the Prince of Biscari, in Sicily, at his own expense, across the river Saint-Paul,

the ancient Symete. It conducts a pure stream of water to

the estate of the prince, and at the same time serves as a public bridge over the valley. This bridge is composed of thirty-one arches, the largest of which, over the river, is 90 feet span. This arch is of Gothic form, while all the others are semi-circular. The bridge has two tiers or ranges of arches ; the roadway is upon the first range, and the channel for the water, upon the second or upper range. The length of the bridge is 269 feet. The height to the top is 120 feet. It is said that this magnificent structure was accomplished

in two years.

Aqueduct of Arcueil.

The Emperor Julian built this Aqueduct to bring water to Paris, A. D. 360 ; it supplied the palace and hot baths, but was destroyed by the Normans. It was above nine miles and a half long, and was entirely under ground, except the stone arcade over a deep valley at Arcueil. After its use had been suspended 800 years, a new and beautiful arched Aqueduct was built by the side of the ruins of the old one, and its final restoration to public use was completed in 1634.