70 A NATURALIST IN MID-AFRICA. 



cloth : the poor wretch had been kept there half- 

 starving for eighteen months ! 



After I had waited two days, my ambassador, 

 Taratibu, appeared with the news that Antari was 

 sending me a big chief, Lnkala, to guide me 

 through the country. 



I went on past Kitangule, over the vast alluvial 

 deposits of the Kagera river, which I kept in view 

 till I crossed it at Kitoboka's on the 16th of 

 March. I had reached the Karagwe hills on the 

 14th, and left the Victoria plateau. These hills, 

 which extend over most of Karagwe and Ankole, 

 are of a distinctly younger age than the granite of 

 the Nyanza region. They consist of a series of 

 clay slates, schists and quartzites, which appeared 

 to me to be folded over and over again, and to 

 overlie unconformably the granite and gneisses of 

 which Uganda and the other countries in the 

 Yictoria region are composed. 



They appear to be part of a series of rocks 

 which are much developed in the basin of the 

 Upper Congo, and probably extend south as far 

 as the south end of Tanganyika. I call this the 

 Central Watershed, for they separate the drainage 

 area of the Nile from that of Tanganyika and the 

 Congo. 



These hills extend over most of Karagwe and 

 Ankole ; the Kuampala mountains, marked on 

 most maps, are not easily distinguishable from the 

 rest. Their general level is from 5,000 to 0,000 



