at the floor of the Anio valley has risen since Roman
times, it is impossible to identify them exactly.
Nero outraged public opinion by bathing in its springs: but the
aqueduct itself seems to have yielded but little to the city in his day,
owing to the depredations of private persons (Frontinus cit.; Plin. NH
xxxi. 42), and a further restoration was carried out by Titus in 79 A.D.
(CIL vi. 1246): there is evidence of repairs by Hadrian; and others were
probably made by Septimius Severus in 196 A.D. (CIL vi. 1247); while
in 212-3 Caracalla cleared the springs, made some new tunnels, and added
another spring, the fons Antoninianus, in connection no doubt with
the construction of the branch to his thermae (ib. 1245).
The aqua Marcia was joined by the AQUA TEPULA (q.v.) and the
AQUA IULIA (q.v.) before the point where it emerged from its underground
course, near the sixth mile of the via Latina; and their channels were
carried above it on the same arches, and are to be seen in section in
e near Porta Septimiana and in Regio I, 532;
alters Rostra, 453;
Schola Xanthi restored, 468;
builds new Castra Equitum Singularium, 105;
Balneae (?), 70;
strengthens aqueduct of Nero, 41:
Septem Domus Parthorum, 187:
so-called Domus Gelotiana under Palatine, 162:
house of Clemens, 177;
Julia Domna restores House of Vestals, 60, and Temple of Vesta, 558;
alterations in the barracks of first Cohort of Vigiles, 129.
196Repairs to Aqua Marcia, 25.
197Domus Lateranorum, 183.
197-198Terminal stones of Tiber banks, 538.
202Pantheon restored, 383.
203Porticus of Octavia restored after a fire, 427.
Arch of Severus in Forum, 43.
(ca.). Domus Cilonis, 176.
204Arch of Severus in the Forum Boarium, 44.
209-211Restorations to Pompey's Theatre, 517.
211-217Reign of Caracalla: he constructs Via Nova, 565;
builds Aqua Antoniniana, 26, 32:
Pons Aurelius (?), 399;
enlarges ianuae of Circus Ma