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Updated: May 1, 2025
When they wished to carry water to a height within the city, up a watertower to a distributing cistern, or to the top storey of a building, they did so by pipes, just as we should; but when they brought water from forty miles away they preferred to bring it in channels lined with impermeable cement and carried upon arches, which wound across the country according to the levels in order to avoid the excessive pressure of too steep a gradient.
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