Barth diverged somewhat to the westward in order to visit U’shek, the largest corn-producing district in western Bornú; it is characterized by a curious alternation of luxuriance and sterility. At the foot of a mountain lies a barren, desolate tract, on the very threshold of which lies an undulating country, bright with date-palms and tamarisks, with crystal pools and rich grasses. Around the town of U’shek spreads a glittering girdle of corn-fields, onion-beds, cotton-fields, in various stages of development. Here the labourer is breaking up the clods and irrigating the soil; there, his neighbour is weeding out his blooming crops. The vegetation everywhere is abundant. The accumulation of refuse prevents you, however, from gaining a general view of the village, which lurks in the sheltering folds of the soil; but the main group of houses surrounds the foot of an eminence, crowned by the habitation of the chief. Observe that while the huts are made of reeds and the stems of millet, the towers in which the grain is pounded are constructed of clay, and ten feet in height. Beyond U’shek stretches a sandy table-land, waving with a dense growth of reeds, and intersected by fertile valleys. Then comes a spur of the mountain-range which rises in the south-west; an irregular and broken plain, carpeted with grass and broom; a jungle of mimosas, dense thickets of capparis, and at intervals small patches of cultivated land. The climate is intensely hot; the very soil seems to burn; and our traveller, feeling himself ill, was forced to rest. During the night, a cold north-east wind covered him and his followers with the feathery awns of the pennixtum; and they rose in the morning in a condition of indescribable uneasiness. The next night was also cold; but there was no wind. At Badámuni, the fertile fields are brightened with springs, which feed a couple of lakes, connected by a canal. Notwithstanding this channel of intercommunication, one of these lakes is of fresh water; the other brackish, and strongly impregnated with natron. It is noticeable that in this region all the valleys and all the mountain-chains run from north-east to south-west, and the direction of the two lakes is the same. Their margin is fringed with papyrus, except that at the point where the water turns brackish the papyrus is succeeded by the kumba, the pith of which is edible. Dr. Barth’s two attendants, born on the shores of the Tchad, immediately recognized this species of reed as growing in a similar manner at the point where that great inland sea touches the basins of nature that surround it. It is a curious circumstance that while the lake of fresh water is of a bright blue, and calm and smooth as a mirror, the other is green as the sea, and heaves to and fro in constant commotion, rolling its foamy waves to the beach, which they strew with marine weeds.