PLATE 11. 



^<XV\Vv.-:::V.; 



Generalized Geological skctch-viap of 

 Lake Tanganyika and its surround- 

 ings, based upon tJte researches of 

 Moore., Fergtison, Cornet, Barrat, 

 Kohlschiitter, &=c. 



N.B. — The orientation of the Lake 

 itself represents tfte principal Graben: 

 this is continued northwards up the 

 valley of the R uzizi. The longitudinal 

 slices included bet%veen the broken 

 lines, are intended to represent sub- 

 sidiary Graben. 



