Horneman, after remaining some time at Mourzouk, had resolved to join a caravan about to proceed southwards into the interior, when observing that the cavalcade consisted almost wholly of black traders, any connexion or intercourse with whom was likely to afford him little favour in the eyes of the Moors, he was induced to forego this purpose; more especially as there was the greatest reason to apprehend obstruction in passing through the country of the Turiacks, then at war with Fezzan. He was informed besides, that caravans from Bornou occasionally terminated their journey at Mourzouk, again returning south; by which under more propitious circumstances he hoped to accomplish his object. These considerations determined him to postpone his departure, resolving in the mean while, with the view of forwarding his despatches to the association, to visit Tripoli, where, however, he did not arrive till the 19th August, 1799, having been detained a considerable time by sickness. After remaining in this city about three months he returned to Mourzouk, nor was it till the 6th April, 1800, that he departed thence for the southward, in company with two shereefs, who had given him assurances of friendship and protection. His letters were filled with the most sanguine hopes of success. But the lapse of two years without any tidings, threw a damp on the cheering expectations then raised in the association and the public. In September 1803, a Fezzan merchant informed Mr. Nissen, the Danish consul of Tripoli, that Yussuph, as Horneman had chosen to designate himself, was seen alive and well on his way to Gondasch, with the intention of proceeding to the coast, and of returning to Europe. Another moorish merchant afterwards informed Mr. M’Donogh, British consul at Tripoli, that Yussuph was in safety at Kashna, in June 1803, and was there highly respected as a mussulman, marabout or saint. Major Denham afterwards learned that he had penetrated across Africa as far as Nyffe, on the Niger, where he fell a victim, not to any hostility on the part of the natives, but to disease and the climate. A young man was even met with, who professed to be his son, though there were some doubt as to the grounds of his claim to that character.