A Memoir of the Construction, Cost, and Capacity of the Croton Aqueduct
The emitting reservoirs had an opening at a height of four and a half feet above the level of the pavement, to turn, if required, the flowing water to the bottom of the tower, and to facilitate their cleanings and reparations. The great reservoir of the Maison Angelique, the bottom of which is now buried in the ground, was supported by a series of vaults, separated by partition walls two and a half feet thick. Five of these vaults are still entire. They are semi-circular, built of small, rough, square stones, with courses of bricks in the voussoirs, in each ten and a half inches, and they appear to have been laid without mortar. A fall, or step, of one and a half foot, arched to a height of four feet, is still seen in a wall seven and a half feet thick. The water here descended by a well, or tank, one and a half foot square, which joins the south side, where it has a thickness of more than ten feet. Decolonia (in his Histoire Litteraire de la ville de Lyons,) says, that thirty leaden
pipes, of from 15 to 20 feet in length, marked by the initials, TI. CLA. CAES. (Tiberius Claudius Caesar,) were found in this part. He had no knowledge of the reservoir discovered by Delorme, to which it is probable these pipes belonged, and in which they were used for distributing the water to the buildings and gardens of the palace of the Emperor Claudius. The aqueduct of Metz is another of the great works of the Romans, though of what precise date seems uncertain possibly of the period when the legions of Caesar held possession of Gaul. The water which it conducted into the town was taken from the valley above Gorze distant about 23 miles now called Les Bouillons.