The Great Plateau which has been here described is bordered everywhere, except at its north-eastern and north-western corners, by low regions. On the north the lowland is at first a mere narrow strip intervening between the Elburz range and the Caspian, a strip which has been already described in the account given of the Third Monarchy. Where, however, the Caspian ends, its shore trending away to the northward, there succeeds to this mere strip of territory a broad and ample tract of sandy plain, extending from about the 54th to the 68th degree of east longitude—a distance of 760 miles—and reaching from the 36th to the 50th parallel of north latitude—a distance not much short of a thousand miles! This tract which comprises the modern Khanats of Khiva and Bokhara, together with a considerable piece of Southern Asiatic Russia, is for the most part a huge trackless desert, composed of loose sand, black or red, which the wind heaps up into hills. Scarcely any region on the earth’s surface is more desolate. The boundless plain lies stretched before the traveller like an interminable sea, but dead, dull, and motionless. Vegetation, even the most dry and sapless, scarcely exists. For three or four hundred miles together he sees no running stream. Water, salt, slimy, and discolored, lies Occasionally in pools, or is drawn from wells, which yield however only a scanty supply. For anything like a drinkable beverage the traveller has to trust to the skies, which give or withhold their stores with a caprice that is truly tantalizing. Occasionally, but only at long intervals, out of the low sandy region there issues a rocky range, or a plateau of moderate eminence, where the soil is firm, the ground smooth, and vegetation tolerably abundant. The most important of the ranges are the Great and Little Balkan, near the Caspian Sea, between the 39th and 40th parallels, the Khalata and Urta Tagh, north-west, of Bokhara, and the Kukuth; still further to the north-west in latitude 42° nearly. The chief plateau is that of Ust-Urt, between the Caspian and the Sea of Aral, which is perhaps not more than three or four hundred feet above the sandy plain, but is entirely different in character.
This desolate region of low sandy plain would be wholly uninhabitable, were it not for the rivers. Two great streams, the Amoo or Jyhun (anciently the Oxus), and the Sir or Synuti (anciently the Jaxartes), carry their waters across the desert, and pour them into the basin of the Aral. Several others of less volume, as the Murg-ab, or river of Merv, the Abi Meshed or Tejend, the Heri-rud, the river of Maymene, the river of Balkh, the river of Khulm, the Shehri-Sebz, the Ak Su or river of Bokhara, the Kizil Deria, etc., flow down from the high ground into the plain, where their waters either become lost in the sands, or terminate in small salt pools. Along the banks of these streams the soil is fertile, and where irrigation is employed the crops are abundant. In the vicinity of Khiva, at Kermineh on the Bokhara river, at Samarcand, at Balkh—and in a few other places, the vegetation is even luxuriant; gardens, meadows, orchards, and cornfields fringe the river-bank; and the natives see in such favored spots resemblances of Paradise! Often, however, even the river-banks themselves are uncultivated, and the desert creeps up to their very edge; but this is in default, not in spite, of human exertion. A well-managed system of irrigation could, in almost every instance, spread on either side of the streams a broad strip of verdure.
In the time of the Fifth Monarchy, the tract which has been here described was divided among three nations. The region immediately to the east of the Caspian, bounded on the north by the old course of the Oxus and extending eastward to the neighborhood of Merv, though probably not including that city, was Chorasmia, the country of the Chorasmians. Across the Oxus to the north-east was Sogdiana (or Sugd), reaching thence to the Jaxartes, which was the Persian boundary in this direction. South of Sogdiana, divided from it by the Middle and Upper Oxus, was Bactria, the country of the Bakhtars or Bactrians. The territory of this people reached southward to the foot of the Paropamisus, adjoining Chorasmia and Aria on the west, and on the south Sattagydia and Gandaria.
East of the table-land lies the valley of the Indus and its tributaries, at first a broad tract, 350 miles from west to east, but narrowing as it descends, and in places not exceeding sixty or seventy miles, across. The length of the valley is not less than 800 miles. Its area is probably about a hundred thousand square miles. We may best regard it as composed of two very distinct tracts—one the broad triangular plain towards the north, to which, from the fact of its being watered by five main streams, he natives have given the name of Punj-ab, the other the long and comparatively narrow valley of the single Indus river, which, deriving its appellation from that noble stream, is known in modern geography as Sinde. The Punjab, which contains an area of above fifty thousand square miles, is mountainous towards the north, where it adjoins on Kashmeer and Thibet, but soon sinks down into a vast plain, with a soil which is chiefly either sand or clay, immensely productive under irrigation, but tending to become jungle or desert if left without human care. Sinde, or the Indus valley below the Punjab, is a region of even greater fertility. It is watered, not only by the main stream of the Indus, but by a number of branch channels which the river begins to throw off from about the 28th parallel. It includes, on the right bank of the stream, the important tract called Cutchi Gandava, a triangular plain at the foot of the Suliman and Hala ranges, containing about 7000 square miles of land which is all capable of being made into a garden. The soil is here for the most part rich, black, and loamy; water is abundant; and the climate suitable for the growth of all kinds of grain. Below Cutchi Gandava the valley of the Indus is narrow for about a hundred miles, but about Tatta it expands and a vast delta is formed. This is a third triangle, containing above a thousand square miles of the richest alluvium, which is liable however to floods and to vast changes in the river beds, whereby often whole fields are swept away. Much of this tract is moreover low and swampy; the climate is trying; and rice is almost the only product that can be advantageously cultivated.
The low region lying south of the Great Plateau is neither extensive nor valuable. It consists of a mere strip of land along the coast of the Indian Ocean, extending a distance of about nine degrees (550 miles) from the mouth of the Persian Gulf to Cape Monze, near Kurrachee, but in width not exceeding ten or, at the most, twenty miles. This tract was occupied in ancient times mainly by a race which Herodotus called Ethiopians and the historians of Alexander Ichthyophagi (Fish-Eaters). It is an arid, sultry, and unpleasant region, scarcely possessing a perennial stream, and depending for its harvests entirely upon the winter rains, and for its water during the summer on wells which are chiefly brackish. Tolerable pasturage is, however, obtainable in places even during the hottest part of the year, and between Cape Jask and Gwattur the crops produced are far from contemptible.
A small tract of coast, a continuation of the territory just described, intervening between it and Kerman, was occupied in the early Persian times by a race known to the Persians as Maka, and to the Greeks as Mycians. This district, reaching from about Cape Jask to Gombroon, is one of greater fertility than is usual in these regions, being particularly productive in dates and grain. This fertility seems, however, to be confined to the vicinity of the sea-shore.
To complete the description of the Eastern provinces two other tracts must be mentioned. The mountain-chain which skirts the Great Plateau on the north, distinguished in these pages by the name of Elburz, broadens out after it passes the south-eastern corner of the Caspian Sea till it covers a space of nearly three degrees (more than 200 miles). Instead of the single lofty ridge which separates the Salt Desert from the low Caspian region, we find between the fifty-fourth and fifty-ninth degrees of east longitude three or four distinct ranges, all nearly parallel to one another, having a general direction of east and west. Broad and rich valleys are enclosed between these latitudinal ranges which are watered by rivers of a considerable size, as more especially the Ettrek and the Gurgan. Thus a territory is formed capable of supporting a largish population, a territory which possesses a natural unity, being shut in on three sides by mountains, and on the fourth by the Caspian. Here in Persian times was settled a people called Hyrcani; and from them the tract derived the name of Hyrcania (Vehrkana), while the lake on which it adjoined came to be known as “the Hyrcanian Sea.” The fertility of the region, its broad plains, shady woods and lofty mountains were celebrated by the ancient writers.
Further to the east, beyond the low sandy plain, and beyond the mountains in which its great rivers have their source—on the other side of the “Roof of the World,” as the