We are not in a position to fix even approximately the amount of the net income of the treasury of Darius which came in every year over and above the land-tax of the provinces and the tolls. Nor can we say how high the yearly contributions in kind paid by the provinces for the court and army ran. If we set aside the extraordinary burdens of supporting the king on a journey, or a satrap, or officer, and the maintenance of troops on a march, and follow Theopompus in assuming that the average daily expense of the whole court amounted to 30 Babylonian talents, a total of 11,000 talents of the royal standard, _i.e._ more than £3,000,000, would be required for this purpose, a sum in excess of the land-tax of the provinces. If we further assume that the maintenance of the army imposed on the provinces a burden equal to the maintenance of the court, the provinces would have to pay for the state, in ordinary burdens, without regard to their own requirements, three times the amount of the land-tax. Egypt, which, with Cyrene and Barca, had to pay 700 talents in tax, would thus pay 2100 talents of royal money every year, _i.e._ more than £600,000. At a later time we find that Ptolemy II. received each year from Egypt 14,800 Attic talents, _i.e._ about £3,000,000, and 1,500,000 artabès of corn, and Ptolemy Auletes received 6000, and, according to Cicero's statement, 12,500 Attic talents.[390] The income of the empire of the Sassanids under Chosru Parviz is put at nearly £14,000,000.[391]