The springs Acqua Maggiore, Acqua della Nocchia, Acqua del Sambuco, Acqua Ritrovata, Acqua della Formetta (Petrini, Memorie Prenestine, p. 286).
Fernique, Étude sur Préneste, p. 96 ff., p. 122 ff.; Nibby, Analisi, II, p. 501 ff.; Marucchi, Guida Arch., p. 45.
Nibby, Analisi, II, p. 503, the sanest of all the writers on Præneste, even made some ruins which he found under the Fiumara house on the east side of town, into the remains of a reservoir to correspond to the one in the Barberini gardens. The structures according to material differ in date about two hundred years.