More important than these contributions of the Arabians, negroes, and Colchians, was the income in money which the crown derived from local sources, within the empire, and the proceeds of royal privileges--more important still the produce in kind which the provinces had to pay every year in addition to the land-tax. In the satrapy of the Parthians and Areians a large sum was paid every year for the opening of the sluices of the Ares (no doubt an affluent of the Margus, V. 9), without which the fields were in that district dried up in the summer. In Egypt the fishery on the canal, which connected the lake of Amenemhat with the Nile, brought the king every year 240 talents.[375] In what way the contributions in kind were divided and imposed upon the provinces, it is not easy to see. Herodotus only tells us that the whole kingdom was divided into cantons for the support of the king and army; a full third of this burden fell upon the satrapy of Babylon.[376] We know that Cappadocia, _i.e._ Phrygia and Cappadocia, the third satrapy of Herodotus, provided each year, in addition to the land-tax of £103,000, 1500 horses, 2000 mules, and 50,000 sheep; Media in addition to her land-tax provided double this amount of animals.[377] Armenia provided 10,000 foals each year in addition to the tax of £115,000.[378] Cilicia furnished 360 grey horses each year. Besides these contributions in animals, there were payments in corn for the garrisons in the provinces. The Persians who formed the garrison of the White Fortress in Memphis received yearly from Egypt 120,000 bushels of wheat, an amount which would abundantly supply the wants of 8000 men. As wheat was cheap in Egypt this contribution would represent a value of about £8500.[379] Each province sent its best products to the court; and nothing but the best was brought to court or received there; there all that was splendid in the empire was to be collected.[380] Babylon sent every year 500 eunuch-boys for service at the court, and Colchis sent male and female slaves of Caucasian race. Chalybon (Helbon) in Syria furnished wine for the court; wheat came from the cities of the Aeolians and the Anatolian coast, salt from the Libyans and the oasis of Siwah.[381]