[Footnote 64: For the aqueducts and cloacae, see Strabo, (l. v.
p. 360;) Pliny, (Hist. Natur. xxxvi. 24; Cassiodorus, (Var. iii.
30, 31, vi. 6;) Procopius, (Goth. l. i. c. 19;) and Nardini,
(Roma Antica, p. 514 - 522.) How such works could be executed by
a king of Rome, is yet a problem.
Note: See Niebuhr, vol. i. p. 402. These stupendous works
are among the most striking confirmations of Niebuhr's views of
the early Roman history; at least they appear to justify his
strong sentence - "These works and the building of the Capitol
attest with unquestionable evidence that this Rome of the later
kings was the chief city of a great state." - Page 110 - M.]