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 matter was settled by the hundred senators dividing them-selves into ten “decuries,” and one was chosen from each decury to exercise the supreme power.

Ten therefore were in office, but only one at a time had the insignia of authority and the lictors. Their individual authority was restricted to five days, and they exercised it in rotation. This break in the monarchy lasted for a year, and it was called by the name it still bears —that of “interregnum.”