Springing from fields of snow, which surround Alpine lakes, the Indus descends from an elevated mountain plain to the south of the highest ridge. At first the river flows in a westerly direction through a cleft between parallel rows of mountains. In spite of the long and severe winter of this region, mountain sheep and goats flourish here, and the sandy soil contains gold-dust. To the south of the course of the river we find depressions in the mountains, where the climate is happily tempered by the nature of the sky and the elevation of the soil. The largest of these is the valley of Cashmere, surrounded by an oval of snowy mountains. To the west of Cashmere the Indus turns its course suddenly to the south; it breaks through the mountain ranges which bar its way, and from this point to the mouth accompanies the eastern slope of the table-land of Iran. As soon as the Himalayas are left behind, a hilly land commences on the left bank, of moderate warmth and fruitful vegetation, spreading out far to the east between the tributaries of the stream. The river now receives the Panjab, and the valley is narrowed in the west by the closer approach of the mountains of Iran; in the east by a wide, waterless steppe, descending from the spurs of the Himalayas to the sea, which affords nothing beyond a scanty maintenance for herds of buffaloes, asses, and camels. The heat becomes greater as the land becomes flatter, and the river more southerly in its course; in the dry months the earth cracks and vegetation is at a standstill. Any overflow from the river, which might give it new vigour, on the melting of the snow in the upper mountains, is prevented for long distances by the elevation of the banks. The Delta formed by the Indus at its mouth, after a course of 1500 miles, contains only a few islands of good marsh soil. The sea comes up over the flat shore for a long distance, and higher up the arms of the river a thick growth of reeds and rushes hinders cultivation, while the want of fresh water makes a numerous population impossible.