GEOGRAPHY AND EXPLORATION. 319 



powerful chief, and passed through !Njangsve, then Ujiji, on Lake 

 Tangauj'ika, then Bagamoyo, and reached Zanzibar in five months, 

 making too quick a journey to add much to our geographical knowl- 

 edge of the regions crossed. 



Dr. Lenz, the famous explorer, who was sent to the aid of Dr. Junker, 

 was detained at Stanley Falls by circumstances beyond his control 

 until April, 1886, when he left for Nyaugwe and Tanganyika. In 

 the mean time Dr. Junker virtually became a captive, and the lot of 

 Dr. Lenz has become a source of inquietude because he is doubtless 

 completely in the power of Arabs hostile to Europeans. Dr. Lenz 

 was accompanied by Dr. Baumaun and Bohndorff, the faithful com- 

 panion of Dr. Junker. He seems to have given up the possibility of 

 reaching the valley of the TJelle through that of the Mobangi (the 

 connection only existing on some fancifully constructed maps). At 

 first he intended traveling up the Aruwimi, but later news from the 

 captives, which led him to believe that they were on the eastern side 

 of Albert I^yanza, determined him to give the preference to the Mbura 

 route. 



The best and clearest resume of the work of all investigators of the 

 affluents of the Congo has been given in Petermann's Mitteilungen, 1886, 

 IX and XI, by v. Frangois. It embodies the work of Grenfell, Kund, 

 Tappenbeck, Wissmann, Wolf, and himself, among others. The year has 

 been rather poor in results as far as the basin of the main river Congo 

 has been concerned. Many travelers have passed up the river as far as 

 Stanley Falls, among them Lenz, Bove, v, Schwerin, etc., but nothing 

 new has been pointed out. In January, 1886, Kund and Tappenbeck 

 found that the Ikata enters the Kassai just before this latter river enters 

 the Congo. There is still considerable doubt concerning the lower 

 course of the Kwango, one of the main southern branches of the Congo, 

 and it is to be regretted that the travels of Massari and Buttner do not 

 throw any new light on the subject, because their itineraries agree and 

 disagree in the most peculiar manner. 



Lieutenants Kund and Tappenbeck have traveled over portions of the 

 Kwango, Kassai, and Sankuru. They found two new tributaries of the 

 Kwango, viz, the Wambu and the Sale, which latter empties into the 

 Kuilu before it joins the Kwango. None of their guides would follow 

 them beyond the Kassai, and on reaching the Sankuru with boats and 

 travelling along it they turned eastward through prairies and dense 

 forests. On their return they discovered a new and important river, 

 the Ikatta, which reaches the Congo under the name of Mfiui. This 

 latter river Stanley believes is the outlet of Lake Leopold II. 



Lieutenant Wissmann has descended the Kassai, and the result has 

 been the complete revolutionizing of our previous ideas of its course. 

 He has gone still further eastward to Lake Lanji, the great basin from 

 which the Congo flows aiul into which the great rivers, the Lualoba, 

 the Luapula, and the Liitira, empty. 



