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
The Sabellian and Umbrian worship, judging from the little we know
of it, rested upon quite the same fundamental views as the Latin
with local variations of colour and form. That it was different
from the Latin is very distinctly apparent from the founding
of a special college at Rome for the preservation of the Sabine
rites;(19) but that very fact affords an instructive illustration
of the nature of the difference.
Observation of the flight of
birds was with both stocks the regular mode of consulting the gods;
but the Tities observed different birds from the Ramnian augurs.
Similar relations present themselves, wherever we have opportunity
of comparing them. Both stocks in common regarded the gods as
abstractions of the earthly and as of an impersonal nature; they
differed in expression and ritual. It was natural that these
diversities should appear of importance to the worshippers of those
days; we are no longer able to apprehend what was the characteristic
distinction, if any really existed.