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
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Religion of the Sabellians
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.
19. Cf. I. IV. Tities and Luceres
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.
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Reference address : http://www.ellopos.net/elpenor/rome/1-12-religion.asp?pg=33