[224] Frontinus, c. 125.
[225] Ibid., c. 93.
[226] They remind English people of the Clapham Junction of the railways near London, where trains crossing each other at different levels can be seen.
[227] Supra Portam Capenam, F. i. 19.
[228] See Frontinus de Aqueductibus, caps. 11, 18, 22, and 71.
[229] Frontinus de Aqueductibus, cap. 13, 14, 18, 20.
[230] Cohen. Méd. Imp. Alex. Sev., (Nos. 239, 334).
[231] This water is not mentioned in the Regionary Catalogue, and its whole history appears doubtful. Some think the name is a corruption of Argentina, the short stream that rises in the Lupercal or Wolf’s Cave, under the north-west corner of the Palatine, as before mentioned.
[232] These sources are on the cliffs above the river Anio, at from five seven miles from Rome, and two miles from Ponte Nono, in swampy meadows called “the meadows of Lucullus,” and some in old stone quarries.
[233] See also the Photo-engravings, Plates [I.] and [II.]; and Historical Photographs, Nos. 865, 866, 867.