The Livingstone, from the base of Iryamba bluffs on the left bank to our camp on the right bank, a mile below the confluence, was about two thousand yards in width. By dead reckoning we ascertained the latitude to be south 1° 28′, or 24 miles north of the Urindi affluent of the Livingstone, 95 miles north of the Lira, and 199 geographical miles north of the mouth of the Luama affluent. The relative rank of these four great tributaries may be estimated by their width, at or near the confluence. The Luama was 400 yards wide; the Lira 300 yards, but deep; the Urindi, 500 yards; the Lowwa, 1000 yards. The parallel of latitude in which the Lowwa mouth is situated is fifty miles north of the extreme north end of Lake Tanganika. From all I could gather by a comparison of names and the relative authenticity of my informants, I am inclined to believe that the sources of this last great river may be placed near the south-west corner of Lake Muta-Nzigé; also, that the Urindi’s head streams must approach the sources of the Luanda, which joins the Rusizi, and flows into Lake Tanganika, and that the Lira must drain the country west of Uvira. The length of the Urindi river, which empties into the Livingstone only fifteen miles south of the Lowwa, may be estimated by a glance at the course of the Luama, which I followed from its source to its confluence with the Lualaba. In the same manner, the Lira’s course and length may be judged. The growing importance and volume of the tributaries as we proceed north also proves a northern prolongation of the mountain chain, which shuts in Tanganika on the west, and probably a slight deflection to the eastward. It will be observed also that while the Luama, the Lulindi, the Kunda, the Kariba, the Rumuna, the Kipembwé, the Lira, Urindi, and Lowwa rivers all issue from the country east, within a length of about two hundred miles of the Livingstone, we have only discovered two comparatively small rivers, the Ruiki and the Kasuku, issuing from the west side during the same course. The nature of the eastern country may be judged after a study of the chapter descriptive of our journey from Lake Tanganika to the mouth of the Luama. At 2 P.M. we left our camp in the forest of Luru, and pulled across to the Iryamba side of the Livingstone. But as soon as the rain had ceased, a strong breeze had risen, which, when we were in mid-river, increased to a tempest from the north, and created great heavy waves, which caused the foundering of two of our canoes, the drowning of two of our men, Farjalla Baraka and Nasib, and the loss of four muskets and one sack of beads. Half-a-dozen other canoes were in great danger for a time, but no more fatal accidents occurred.