The Swiss, whom some odd caprice of fate, here unexplained, had converted into an Egyptian naval captain, and to whom the scientific duties of the expedition were confided, died in the following spring, and his place was taken by Captain Selim. Mr Werne and his brother, who had long ardently desired to accompany one of these expeditions up the Nile, were greatly discouraged at this change, which they looked upon as destructive to their hopes. At the town of Chartum, at the confluence of the White and Blue streams, they witnessed, in the month of November 1839, the departure of the first flotilla; and, although sick and weak, from the effects of the climate, their hearts were wrung with regret at being left behind. This expedition got no further than 6° 35' N. L.; although, either from mistakes in their astronomical reckoning or wishing to give themselves more importance, and not anticipating that others would soon follow to check their statements, they pretended to have gone three degrees further south. But Mehemet Ali, not satisfied with the result of their voyage, immediately ordered a second expedition to be fitted out. Mr Werne, who is a most adventurous person, had been for several months in the Taka country, in a district previously untrodden by Europeans, with an army commanded by Achmet Bascha, governor-general of Sudan, who was operating against some rebellious tribes. Here news reached him of the projected expedition; and, to his great joy, he obtained from Achmet permission to accompany it in the quality of passenger. His brother, then body-physician to the Bascha, could not be spared, by reason of the great mortality in the camp.