Fior._ lib.ii.sect.II.The number of the Priors was first three, then six, and finally eight.

Up to 1282 the city had been divided into Sestieri.

It was then found convenient to divide it into quarters, and the numbers followed this alteration.
[3] Machiavelli, _Ist.

Fior._ lib.ii.sect.13, may be consulted for the history of Giano della Bella and his memorable ordinance.
Dino Compagni's _Chronicle_ contains the account of a contemporary.
[4] See Varchi, vol.i.p.

169; Mach._Ist.