Page:Frontinus - The stratagems, and, the aqueducts of Rome (Bennet et al 1925).djvu/445

Rh A gauging of this aqueduct could not be taken at the intake, since there it consists of two channels. But at The Twins, which is below Spes Vetus, where it joins with a branch of Augusta, I found a depth of water of 5 feet, and a width of $1 3⁄4$ feet, making an area of $8 3⁄4$ square feet, twenty-two 100-pipes plus a 40-pipe, which makes 1,825 quinariae,—more than the records have it by 984 quinariae. It was delivering 704 quinariae,—137 quinariae less than credited in the records; and, furthermore, 1,121 quinariae less than given by the gauging at The Twins. A considerable amount of this, however, is lost by leaks in the conduit, which, being deeply buried, does not clearly exhibit them. And yet their presence is plainly indicated by the fact that in very many parts of the City excellent water is met with, which leaks from that aqueduct. But we also detected some illicit pipes within the City. Outside the City, however, on account of the depth of the level, which at the intake is 50 feet underground, the conduit suffers no depredations.

Old Anio is credited in the records with the amount of 1,541 quinariae. At the intake I found 4,398 quinariae, exclusive of the quantity which is

