The measure of the walls of antient Rome, is a point whereupon antiquaries have widely disagreed. The passage in Pliny's Nat. Hist. lib. iii. c. 5. to which they all refer, stands thus. “Moenia ejus collegere ambitu, Impp. Censs.que Vespasianis, anno “conditae dcccxxvi, passus xiii.m.cc.” Lipsius adds another x, and makes the circuit ten miles larger: But this insertion has with very good reason been rejected by the succeeding critics.