Some exceptions to the general uniformity had almost of necessity to be made in so vast and heterogeneous an empire as the Persian. Occasionally it was thought wise to allow the continuance of a native dynasty in a province; and the satrap had in such a case to share with the native prince a divided authority. This was certainly the case in Cilicia, and probably in Paphlagonia and Phoenicia. Tribes also, included within the geographical limits of a satrapy, were sometimes recognized as independent; and petty wars were carried on between these hordes and their neighbors. Robber bands in many places infested the mountains, owing no allegiance to any one, and defied alike the satrap and the standing army.

The condition of Persia Proper was also purely exceptional. Persia paid no tribute, and was not counted as a satrapy. Its inhabitants were, however, bound, when the king passed through their country, to bring him gifts according to their means. This burthen may have been felt sensibly by the rich, but it pressed very lightly on the poor, who, if they could not afford an ox or a sheep, might bring a little milk or cheese, a few dates, or a handful of wild fruit. On the other hand, the king was bound, whenever he visited Pasargadae, to present to each Persian woman who appeared before him a sum equal to twenty Attic drachmas, or about sixteen shillings of our money. This custom commemorated the service rendered by the sex in the battle wherein Cyrus first repulsed the forces of Astyages.

The substitution of definite burthens on the subject in lieu of variable and uncertain charges was aimed at, rather than effected, by the new arrangement of the revenue which is associated with the name of Darius. This arrangement consisted in fixing everywhere the amount of tribute in money and in kind which each satrapy was to furnish to the crown. A definite money payment, varying, in ordinary satrapies, from 170 to 1000 Babylonian silver talents,330 or from L42,000. to L250,000. of our money, and amounting, in the exceptional case of the Indian satrapy, to above a million sterling, was required annually by the sovereign, and had to be remitted by the satrap to the capital. Besides this, a payment, the nature and amount of which was also fixed, had to be made in kind, each province being required to furnish that commodity, or those commodities, for which it was most celebrated. This latter burthen must have pressed very unequally on different portions of the Empire, if the statement of Herodotus be true that Babylonia and Assyria paid one-third of it. The payment seems to have been very considerable in amount. Egypt had to supply grain sufficient for the nutriment of 120,000 Persian troops quartered in the country. Media had to contribute 100,000 sheep, 4000 mules, and 3000 horses; Cappadocia, half the above number of each kind of animal; Armenia furnished 20,000 colts; Cilicia gave 360 white horses and a sum of 140 talents (L35,000.) in lieu of further tribute in kind. Babylonia, besides corn, was required to furnish 500 boy eunuchs. These charges, however, were all fixed by the crown, and may have been taken into consideration in assessing the money payment, the main object of the whole arrangement evidently being to make the taxation of each province proportionate to its wealth and resources.

The assessment of the taxation upon the different portions of his province was left to the satrap. We do not know on what principles he ordinarily proceeded, or whether any uniform principles at all were observed throughout the Empire. But we find some evidence that, in places at least, the mode of exaction and collection was by a land-tax. The assessment upon individuals, and the actual collection from them, devolved, in all probability, on the local authorities, who distributed the burthen imposed upon their town, village, or district as they thought proper. Thus the foreign oppressor did not come into direct contact with the mass of the conquered people, who no doubt paid the calls made upon them with less reluctance through the medium of their own proper magistrates.

If the taxation of the subject had stopped here, he would have had no just ground of complaint against his rulers. The population of the Empire cannot be estimated at less than forty millions of souls. The highest estimate of the value of the entire tribute, both in money and kind, will scarcely place it at more than ten millions sterling. Thus far, then, the burthen of taxation would certainly not have exceeded five shillings a head per annum. Perhaps it would not have reached half that amount. But, unhappily, neither was the tribute the sole tax which the crown exacted from its subjects, nor had the crown the sole right of exacting taxation. Persian subjects in many parts of the Empire paid, besides their tribute, a water-rate, which is expressly said to have been very productive. The rivers of the Empire were the king’s; and when water was required for irrigation, a state officer superintended the opening of the sluices, and regulated the amount of the precious fluid which might be drawn off by each tribe or township. For the opening of the sluices a large sum was paid to the officer, which found its way into the coffers of the state. Further, it appears that such things as fisheries—and if so, probably salt-works, mines, quarries, and forests—were regarded as crown property, and yielded large sums to the revenue. They appear to have been farmed to responsible persons, who undertook to pay at a certain fixed rate, and made what profit they could by the transaction. The price of commodities thus farmed would be greatly enhanced to the consumer.

By these means the actual burthen of taxation upon the subject was rendered to some extent uncertain and indefinite, and the benefits of the fixed tribute system were diminished. But the chief drawback upon it has still to be mentioned. While the claims of the crown upon its subjects were definite and could not be exceeded, the satrap was at liberty to make any exactions that he pleased beyond them. There is every reason to believe that he received no stipend, and that, consequently, the burthen of supporting him, his body-guard, and his Court was intended to fall on the province which had the benefit of his superintendence. Like a Roman proconsul, he was to pay himself out of the pockets of his subjects; and, like that class of persons, he took care to pay himself highly. It has been calculated that one satrap of Babylon drew from his province annually in actual coin a sum equal to L100,000. of our money. We can scarcely doubt that the claims made by the provincial governors were, on the average, at least equal to those of the crown; and they had the disadvantage of being irregular, uncertain, and purely arbitrary.

Thus, what was gained by the new system was not so much the relief of the subject from uncertain taxation as the advantage to the crown of knowing beforehand what the revenue would be, and being able to regulate its expenditure accordingly. Still a certain amount of benefit did undoubtedly accrue to the provincials from the system; since it gave them the crown for their protector. So long as the payments made to the state were irregular, it was, or at least seemed to be, for the interest of the crown to obtain from each province as much as it could anyhow pay. When the state dues were once fixed, as the crown gained nothing by the rapacity of its officers, but rather lost, since the province became exhausted, it was interested in checking greed, and seeing that the provinces were administered by wise and good satraps.

The control of its great officers is always the main difficulty of a despotic government, when it is extended over a large space of territory and embraces many millions of men. The system devised by Darius for checking and controlling his satraps was probably the best that has ever yet been brought into operation. His plan was to establish in every province at least three officers holding their authority directly from the crown, and only responsible to it, who would therefore act as checks one upon another. These were the satrap, the military commandant, and the secretary. The satrap was charged with the civil administration, and especially with the department of finance. The commandant was supreme over the troops. The office of the secretary is less clearly defined; but it probably consisted mainly in keeping the Court informed by despatches of all that went on in the province. Thus, if the satrap were inclined to revolt, he had, in the first place, to persuade the commandant, who would naturally think that, if he ran the risk, it might as well be for himself; and, further, he had to escape the lynx eyes of the secretary, whose general right of superintendence gave him entrance everywhere, and whose prospects of advancement would probably depend a good deal upon the diligence and success with which he discharged the office of “King’s Eye” and “Ear.” So, if the commandant were ambitious of independent sway, he must persuade the satrap, or he would have no money to pay his troops; and he too must blind the secretary, or else bribe him into silence. As for the secretary, having neither men nor money at his command, it was impossible that he should think of rebellion.

But the precautions taken against revolt did not end here. Once a year, according to Xenophon, or more probably at irregular intervals, an officer came suddenly down from the Court with a commission to inspect a province. Such persons were frequently of royal rank, brothers or sons of the king. They were accompanied by an armed force, and were empowered to correct whatever was amiss in the province, and in case of necessity to report to the crown the insubordination or incompetency of its officers. If this system had been properly maintained, it is evident that it would have acted as a most powerful check upon misgovernment, and would have rendered revolt almost impossible.

Another mode by which it was sought to secure the fidelity of the satraps and commandants was by choosing them from among the king’s blood relations, or else attaching them to the crown by marriage with one of the princesses. It was thought that the affection of sons and brothers would be a restraint upon their ambition, and that even connections by marriage would feel that they had an interest in upholding the power and dignity of the great house with which they had been thought worthy of alliance. This system, which was entensively followed by Darius, had on the whole good results, and was at any rate preferable to that barbarous policy of prudential fratricide which has prevailed widely in Oriental governments.