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| | Aqueduct |
 | | But since a solid wall across a valley would have cut off the usual traffic, it was found necessary to break up the wall, by means of arches, into a series of pillars, and with this commenced the system of aqueduct bridges, which have proved to be the most striking monuments of the Roman empire. |
 | | The date of its construction was the year of Rome 442, according to Frontinus, an overseer of aqueducts (curator aquarum) under the empire, whose work De Aquoeduct. |
 | | Again, partly on the same structure of arches, and with a still higher channel, flowed (5.) AQUA JULIA, from a source near that of the last-mentioned aqueduct to within 7000 paces of the walls of Rome, where the joint waters were received in a reservoir, and thence distributed in various channels to the city. |
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