. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. ity of 50,000,000 ofibic ft. of water was atfijrded to the inhabitants of Rome, so that, reckoning the po])ula-;)n at one million, which it probably never exceeded, 50 cubic ft. of water were allowed for10 consumiition of each inhabitant. More magnificent Roman a(pieducts are, however, to beund in the jirovinces than those that supplied the city. That of ^letz, whereof many ofle arcades remain, is one of the most remarkable ; extending across the .M
. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. ity of 50,000,000 ofibic ft. of water was atfijrded to the inhabitants of Rome, so that, reckoning the po])ula-;)n at one million, which it probably never exceeded, 50 cubic ft. of water were allowed for10 consumiition of each inhabitant. More magnificent Roman a(pieducts are, however, to beund in the jirovinces than those that supplied the city. That of ^letz, whereof many ofle arcades remain, is one of the most remarkable ; extending across the .Moselle, a riverconsiderable breadth where it crosses it, it conveyed the water of the Gorse to the city? Metz. From the reservoir in which the water was received, it was conducted througliibterranean channels of hewn stone, so si)acious that in them a man might stand upright,he arches appear to have been about fifty in number, and about 50 ft. in height. Those, the middle of the river have been swcjit away by the ice, at the extremities re-aining entire. In a still more perfect state than that at i\Iet/. is the afjucduct of II. ROM AX. of which one hundred and tlftyof the arches remain, all formed of large blocks unconnectedby cement, in two ranks of arcades one above the other. 225. It has been conjectured that the causes for not carrying these aqueducts in straightlines were first to avoid excessive height, where low grounds were crossed, and, secondly, todiminish the velocity of the water, so that it might not be delivered to the city in a tmbidstate. Along the line of an aqueduct, according to Montfauron, at certain intervals, re-servoirs called Castdlu were formed, in which the water might deposit its silt; tiiese wereround lowers of masonry raised of course as high as the aqueduct itself, and sometimes highlyfirnamented. The .same author observes that below the general bed of the channel, pitswere sunk for the reception and deposit of the earthy particles
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