In 1813 Burckhardt explored Nubia proper, including Mahass and Kemijour. This expedition cost him only forty-two francs, a very paltry sum in comparison with the price involved in the smallest attempt at an African journey in our own day; but we must not forget that Burckhardt was content to live upon millet-seed, and that his entire _cortege_ consisted of two dromedaries. Two Englishmen, Mr. Legh and Mr. Smelt, were travelling in the country at the same time, scattering gold and presents as they passed, and thus rendering the visits of their successors costly. Burckhardt crossed the cataracts of the Nile. "A little farther on," says the narrative, "near a place called Djebel-Lamoule, the Arab guides practise a curious extortion." This is their plan of proceeding. They halt, descend from their camels, and arrange a little heap of sand and pebbles, in imitation of a Nubian tomb. This they, call "_preparing the grave for the traveller_" and follow up the demonstration by an imperious demand for money. Burckhardt having watched his guide commence this operation, began quietly to imitate him, and then said, "Here is thy grave; as we are brothers, it is but fair that we should be buried together." The Arab could not help laughing, both graves were simultaneously destroyed, and remounting the camels, the cavalcade proceeded, better friends than before. The Arab quoted a saying from the Koran: "No human being knows in what spot of the earth he will find his grave." [Illustration: "Here is thy grave."] Burckhardt had hoped to get as far as Dingola, but was obliged to rest satisfied with collecting information about the country and the Mamelukes, who had taken refuge there after the massacre of their army by order of the viceroy of Egypt. The attention of the traveller was frequently directed to the ruins of temples and ancient cities, than which none are more curious than those of Isambul. "The temple on the banks of the Nile is approached by an avenue flanked by six colossal figures, which measure six feet and a half from the ground to the knees. They are representations of Isis and Osiris, in various attitudes. The sides and capitals of the pillars are covered with paintings or hieroglyphic carvings, in which Burckhardt thought a very ancient style was to be traced. All these are hewn out of the rock, and the faces appear to have been painted yellow, with black hair. Two hundred yards from this temple are the ruins of a still larger monument, consisting of four enormous figures, so deeply buried in the sand that it is impossible to say whether they are in a standing or sitting posture." These descriptions of antiquities, which in our own day are accurately known by drawings and photographs, have, however, little value for us; and are merely interesting as indicating the state of the ruins when Burckhardt visited them, and enabling us to judge how far the depredations of the Arabs have since changed them.