Page:Frontinus - The stratagems, and, the aqueducts of Rome (Bennet et al 1925).djvu/447

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Aqueducts of Rome, II. 65–66

diverted into the special conduit of the Tiburtines,[1]—2,857 quinariae more than is recorded. There were distributed 262 quinariae, before the aqueduct reaches its settling-reservoir. The quantity at the reservoir, determined from the gauges placed there, was 2,362 quinariae, so that 1,774 quinarine were lost between the intake and the reservoir. Down-stream from the settling-reservoir, 1,348 quinariae were delivered,—more than we have stated to be the capacity according to the records by 69 quinariae, but less than we have shown was received into the conduit from the settling-reservoir by 1,014 quinariae. The total which was lost between the intake and the settling-reservoir, and below the settling-reservoir, amounted to 2,788 quinariae, which I should have suspected resulted from an error of measurement, had I not discovered where it was diverted.[2]

In the records Marcia is credited with the quantity of 2,162 quinariae. Gauging it at the intake, I found 4,690 quinariae,—2,528 quinariae more than appear in the records. There were delivered, before it reaches the settling-reservoir, 95 quinariae; and 92 quinariae were given to supplement Tepula; likewise 164 to Anio. The total delivered before the settling-reservoir is reached, was 351 quinariae. The

  1. Cf. 6.
  2. Old Anio was received into a catch-basin. (1) The measurements at the intake showed 4,398 quinariae, the records credited 1,541 quinariae, a discrepancy of 2857 quinariae; (2) between the intake and the reservoir 262 quinariae were distributed, and measurements at the reservoir showed 2,362 quinariae, revealing a loss of 1,774 quinariae above the reservoir; (3) above and below the reservoir, there were delivered in all 1,610 quinariae, 69 quinariae more than the records showed; but since measurements at the reservoir found 2,362 quinariae, and only 1,348 were delivered below that, 1,014 quinariae remained unaccounted for, and the loss above and below the reservoir totalled 2,788 quinariae.
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