with assignments to various towns in Italy (e.g., Ostia for management of the food supply). The specific number elected year-to-year is difficult to determine at any time, but before Lucius Cornelius Sulla's reforms in 81 BC, there were 19 quaestors; his reforms created one for the water supply, raising the total to 20. He also made holding the quaestorship compulsory for advancement to future offices. These reforms also established a minimum age for the office, established at 30. Additionally, the reforms granted quaestors automatic membership in the senate upon being elected, whereas previously, membership in the senate was granted only after censors revised the Senate rolls every few years. During Julius Caesar's dictatorship, he doubled the number of quaestors to forty. During the empire Principate During the Principate, the number was halved back to twenty by Augustus. He also removed the quaestors from government of the aerarium (with a short interlude under Claudius when this was reversed). The emperor and the two consuls each had two quaestors, with the emperor selecting his own, the quaestores Caesaris, who were often up-and-coming men from noble families. Over time, the former duties of the quaestors were subsumed by imperial officials, but, in the senatorial provinces, they "retained some financial functions through the Principate". Late empire During the reign of the Emperor Constantine I, a new quaestorship was established, called the quaestor sacri palatii (). The office functioned as a spokesman for the emperor and was charged with the creation of laws and management of legal petitions, serving as de facto minister of justice. The formal judicial powers of the office were slim, but, as chief legal advisor to the emperor, holders gained substantial influence. Various famous lawyers held this quaestorship, including Antiochus Chuzon and Tribonian, who contributed greatly to the production of the Theodosian code and Code of Justinian, respectively. From 440 onward, the office of the quaestor worked in conjunction with the praetorian prefect of the East to oversee the supreme tribunal, or supreme court, at Constantinople. There, they heard appeals from the various subordinate courts and governors. Byzantine empire Emperor Justinian I also created the offices , a judicial and police official for Constantinople, and (quaestor of the army), a short-lived joint military-administrative post covering the border of the lower Danube. The survived long into the Byzantine Empire, although its duties were altered to match the by the 9th century AD,