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
For the future also the mode of admission to the senate was
regulated anew and placed on an essentially different basis.
As the constitution had hitherto stood, men entered the senate
either through the summons of the censors, which was the proper and
ordinary way, or through the holding of one of the three curule
magistracies--the consulship, the praetorship, or the aedileship--
to which since the passing of the Ovinian law a seat and vote in
the senate had been de jure attached.(14)
The holding of an inferior
magistracy, of the tribunate or the quaestorship, gave doubtless a
claim de facto to a place in the senate--inasmuch as the censorial
selection especially turned towards the men who had held such
offices--but by no means a reversion de jure.
