THE TANGANYIKA PROBLEM. 



93 



manner, succeeded in forcing its way out, and cut a channel 

 for its overflow to the west into the Congo. 



This view of the matter will at once explain the fact that 

 Tanganyika has otherwise unaccountably fallen some 40, 

 possibly a great many more, feet within no great number of 

 years, the overplus of water in it having worn away the 



The steep West Coast of the Albert Edward Nyanza. The Western side of the Great 

 Central eurycolpic fold. 



channel to the west to such an extent that it will never 

 regain its ancient high level. 



The portion of the great central eurycolpic fold which ex- 

 tends beyond the Mfumbiro mountains, and contains the 

 Albert Edward Nyanza, is similar in character to the more 

 southern portion of the same great valley which contains 

 Lake Tanganyika, until we reach the northern shores of 

 the Albert Edward Lake. Here, however, a new feature 



