10); was she who sold to Tarquin the Proud the Sibylline books.
These officials, at the command of the senate, consulted the Sibylline books in order to discover, not exact predictions of definite future events, but the religious observances necessary to avert extraordinary calamities (pestilence, earthquake) and to expiate prodigies in cases where the national deities were unable, or unwilling, to help. Only the interpretation of the oracle which was considered suitable to the emergency was made known to the public, not the oracle itself.
In the year 12 B.C. Augustus sought out and burned a great many spurious oracles and subjected the Sibylline books to a critical revision; they were then placed by him in the temple of Apollo Patrotis on the Palatine, where we hear of them still existing in A.D.
Klausen (Aeneas and die Penaten, 1839), the oldest collection of Sibylline oracles appears to have been made about the time of Solon and Cyrus at Gergis on Mount Ida in the Troad; it was attributed to the Hellespontine Sibyl and was preserved in the temple of Apollo at Gergis.
Some genuine Sibylline verses are preserved in the Book of Marvels (IIepi oav,sautwv) of Phlegon of Tralles (2nd century A.D.).