Tinnes following on 5 February. Heuglin also had geographical exploration in mind, intending to explore the uncharted region beyond the river and to ascertain how far westward the Nile basin extended. He also intended to investigate the reports of a vast lake in Central Africa eastwards of those already known, most likely the lake-like expanses of the middle Congo. Ascending the Bahr-el-Ghazal, the limit of navigation was reached on 10 March. From Mishra-er-Rek, a journey was made overland, across the Bahr Jur and south-west by the Bahr Kosango to Jebel Kosango, on the borders of the Niam-Niam country. During the journey, all of the travellers suffered severely from fever. A student died in April and Tinne's mother in July, followed by two Dutch maids. After much travel and dangers, the remainder of the party reached Khartoum at the end of March 1864, when Tinne's aunt, who had stayed in Khartoum, died. Tinne buried her aunt and one maid and brought the corpse of her mother and the other maid back to Cairo. John Tinne, her half-brother from Liverpool, visited in January–February 1865, with the intention of persuading her to return home with him. Tinne was not to be persuaded and John left with the two corpses and a large part of her ethnographic collection. Her mother's body later was buried at the Oud Eik en Duinen Cemetery in The Hague. Tinne's ethnographic collection was donated by John to the Public Museum (now the Liverpool World Museum). At Cairo, Tinne lived in Oriental style during the next four years, visiting Algeria, Tunisia, and other parts of the Mediterranean. An attempt to reach the Touaregs in 1868 from Algiers failed. Sahara and death In January 1869, she again made an attempt to reach the Touaregs. She started from Tripoli with a caravan, with the intention of traveling to Lake Chad, followed by Wadai, Darfur and Kordofan before reaching the upper Nile. In Murzuq, she met the German explorer Gustav Nachtigal, with whom she intended to cross the desert. As Nachtigal wanted to go to the Tibesti Mountains first, she set out for the South on her own. Her caravan advanced slowly. Due to her diseases (attacks of gout and inflammation of her eyes), she was not able to maintain order in her group. In the early morning of 1 August, on the route from Murzuk to Ghat, she was murdered together with