Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
How much the government was obliged
to concede, or at any rate did concede, is obvious from what has been
stated. The Roman custom, under which the state consulted Etruscan
sages in certain emergencies and the government accordingly took steps
to secure the traditional transmission of Etruscan lore in the noble
families of Etruria, as well as the permission of the secret worship
of Demeter, which was not immoral and was restricted to women, may
probably be ranked with the earlier innocent and comparatively
indifferent adoption of foreign rites.
But the admission of the
worship of the Mother of the Gods was a bad sign of the weakness which
the government felt in presence of the new superstition, perhaps even
of the extent to which it was itself pervaded by it; and it showed in
like manner either an unpardonable negligence or something still
worse, that the authorities only took steps against such proceedings
as the Bacchanalia at so late a stage, and even then on an accidental
information.