The Peries and Deevs of the modern Persians answer to the good and evil Jinn of the Arabs, of whose origin and nature we shall presently give an account. The same Suleymans ruled over them as over the Jinn, and both alike were punished for disobedience. It is difficult to say which is the original; but when we recollect in how much higher a state of culture the Persians were than the Arabs, and how well this view accords with their ancient system of religion, we shall feel inclined to believe that the Arabs were the borrowers, and that by mingling with the Persian system ideas derived from the Jews, that one was formed by them which is now the common property of all Moslems. In like manner we regard the mountains of Kâf, the abode alike of Jinn and of Peries and Deevs, as having belonged originally to Persian geography. The fullest account of it appears in the Persian romance of Hatim Taï,[26] the hero of which often visited its regions. From this it would seem that this mountain-range was regarded as, like that of the ancient Greek cosmology, surrounding the flat circular earth like a ring, or rather like the bulwarks of a ship, outside of which flowed the ocean; while some Arab authorities make it to lie beyond, and to enclose the ocean as well as the earth.[27] It is said to be composed of green chrysolite, the reflection of which gives its greenish tint to the sky. According to some, its height is two thousand English miles. Jinnestân is the common appellation of the whole of this ideal region. Its respective empires were divided into many kingdoms, containing numerous provinces and cities. Thus in the Peri-realms we meet with the luxuriant province of Shad-u-kâm (_Pleasure and Delight_), with its magnificent capital Juherabâd (_Jewel-city_), whose two kings solicited the aid of Cahermân against the Deevs,[28] and also the stately Amberabâd (_Amber-city_), and others equally splendid. The metropolis of the Deev-empire is named Ahermanabâd (_Aherman's city_); and imagination has lavished its stores in the description of the enchanted castle, palace, and gallery of the Deev monarch, Arzshenk. The Deevs and Peries wage incessant war with each other. Like mankind, they are subject to death, but after a much longer period of existence; and, though far superior to man in power, they partake of his sentiments and passions. We are told that when the Deevs in their wars make prisoners of the Peries, they shut them up in iron cages, and hang them from the tops of the highest trees, exposed to every gaze and to every chilling blast. Here their companions visit them, and bring them the choicest odours to feed on; for the ethereal Peri lives on perfume, which has moreover the property of repelling the cruel Deevs, whose malignant nature is impatient of fragrance.[29]