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
When
a Roman lady belonging to the high nobility, the sister of one of the
numerous citizen-admirals who in the first Punic war had ruined the
fleets of the state, one day got among a crowd in the Roman Forum, she
said aloud in the hearing of those around, that it was high time to
place her brother once more at the head of the fleet and to relieve
the pressure in the market-place by bleeding the citizens afresh
(508). Those who thus thought and spoke were, no doubt, a small
minority; nevertheless this outrageous speech was simply a forcible
expression of the criminal indifference with which the whole noble
and rich world looked down on the common citizens and farmers.
They did not exactly desire their destruction, but they allowed it to
run its course; and so desolation advanced with gigantic steps over
the flourishing land of Italy, where countless free men had just been
enjoying a moderate and merited prosperity.