Ab urbe condita

Titus Livius (Livy)

Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.

The knights were first summoned to record their vote, then the eighty centuries of the infantry of the First Class; if their votes were divided, which seldom happened, it was arranged for the Second Class to be summoned; very seldom did the voting extend to the lowest Class.

Nor need it occasion any surprise, that the arrangement which now exists since the completion of the thirty-five tribes, their number being doubled by the centuries of juniors and seniors, does not agree with the total as instituted by Servius Tullius.