But he was really ill when he arrived at Kúkáwa, and, unhappily, the rainy season had begun. During the night of the 3rd of August, the storm converted his sleeping apartment into a small lake, and his fever was seriously aggravated. The pools which formed in every nook and corner of the town were rendered pestiferous by the filth of all kinds which stagnated in them. He ought to have withdrawn to some healthier country, but, in order to pay the debts of the expedition and prepare for new explorations, was compelled to remain and sell the merchandise which had arrived in his absence. He made all haste, however, to discharge this duty; and when, early in September, the Government despatched a body of the Welád Shinán—Arab mercenaries whom they had enlisted—to reconquer the eastern districts of the province of Kánem, he attached himself to the expedition, accompanied by his fellow-traveller, Overweg. In the course of this new journey they obtained another view of Lake Tchad, under peculiar circumstances. It was about seven o’clock in the morning. Far to their right, a whole herd of elephants, arranged in almost military array, like an army of rational beings, slowly proceeded to the water. In front appeared the males, as was evident from their size, in regular order; at a little distance followed the young ones; in a third line were the females; and the whole were brought up by five males of immense size. The latter, though the travellers were riding along quietly, and at a considerable distance, took notice of them, and some were seen throwing dust into the air; but no attempt was made to disturb them. There were altogether about ninety-six. Barth and Overweg returned to Kúkáwa on the 14th of November, but ten days afterwards they again sallied forth, accompanying another warlike expedition, which had been ordered to march against Mánderá. It presented, however, few features of interest or importance. The indefatigable pioneers were back again in Kúkáwa on the 1st of February, 1852, and there they remained until the 1st of March. Though crippled by want of means, enfeebled by fever, and beset by a thousand difficulties, Dr. Barth resolved on continuing his work of exploration, and, on the 17th of March, entered into Bagirmi, a region never before visited by Europeans. Bagirmi forms an extensive table-land, with an inclination towards the north, and an elevation of 900 to 1000 feet above the sea-level. It measures about 240 miles from north to south, and 150 from east to west. In the north lie some scattered mountain ranges, which separate the two basins of Lake Fittri and Lake Tchad. The chief products are sorghum, millet, sesamum, poa, wild rice, haricot beans, water-melons, citron, and indigo. Very little grain is cultivated. The population numbers about 1,500,000 souls.