Edward Noble Stone]]> (Key to Fabretti’s engraving
Page 8: A=the space or hollow through which the water flowed
Page 9 (top):A=the space or hollow through which the water flowed; B=the ventilation shaft to maintain freshness and allow
access; C=the ridge of the arch; D=the form of the arch upright
Page 9 (bottom): A settling tank where the water is carried through (A) and (B) into the tank (C), where the mud in the water remained. Purified water exited through (D) and (E) and continued its journey to the city.)
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Raffaele Fabretti]]>