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
In the spiritual hierarchy on the other hand Caesar, although he issued a detailed law respecting this portion of the state-economy, made no material alteration, except that he connected with the person of the regent the supreme pontificate and perhaps also the membership of the higher priestly colleges generally; and, partly in connection with this, one new stall was created in each of the three supreme colleges, and three new stalls in the fourth college of the banquet-masters. If the Roman state-hierarchy had hitherto served as a support to the ruling oligarchy, it might render precisely the same service to the new monarchy.
The conservative religious policy of the senate was transferred to the new kings of Rome; when the strictly conservative Varro published about this time his "Antiquities of Divine Things," the great fundamental repository of Roman state-theology, he was allowed to dedicate it to the -Pontifex Maximus- Caesar. The faint lustre which the worship of Jovis was still able to impart shone round the newly-established throne; and the old national faith became in its last stages the instrument of a Caesarian papacy, which, however, was from the outset but hollow and feeble.
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Reference address : http://www.ellopos.net/elpenor/rome/5-11-old-republic-new-monarchy.asp?pg=56