Notes oil the Congo River. 189 
In the middle region of the Tanganyika, I found 
the rainy season lasting from September to May. 
At Lake Liemba, the south-eastern projection of 
the Tanganyika, Dr. Livingstone in 1867 saw no 
rain from May 12 to September, and in Many- 
wema-land, west of the central Tanganyika, about 
south latitude 5 0 , the wet season began in No¬ 
vember, and continued till July with intervals, 
marking the passage of the belt of calms. But, 
for the Congo to rise in September, we must 
assume the rains to have fallen in early August, 
allowing ten or fifteen days for the streams to 
descend, and the rest for the saturation of the 
land. This postulates a supply from the Central 
African regions far north of the equator. Even for 
the March-June freshets, we must also undoubtedly 
go north of the Line, yet Herr H. Kiepert 1 places 
the northernmost influent of Congo some 150 
miles south of the equator. Under these limita¬ 
tions I agree with Dr. Behm :—“ Taking every¬ 
thing into consideration, in the present state of our 
knowledge, there is the strongest probability that 
the Lualaba is the head stream of the Congo, and 
the absolute certainty that it has no connection 
with the Nile or any other river (system) of the 
northern hemisphere.” And again : “ As surely 
as the sun stands over the southern hemisphere in 
“ Erlauterungen,” &c. Berlin: Dietrich Reimer, 1874. 
