M. D'Anville has given, in the Memoirs of the Academy for the year 1756, (tom. xxx. p. 198 - 236,) a plan of Rome on a smaller scale, but far more accurate than that which he had delineated in 1738 for Rollin's history. Experience had improved his knowledge and instead of Rossi's topography, he used the new and excellent map of Nolli. Pliny's old measure of thirteen must be reduced to eight miles. It is easier to alter a text, than to remove hills or buildings.