THE TANGANYIKA BASIN. 



271 



tree Senecio, Viola Abyssinica, the tree heather 

 (Ericinella Johnstonei), and the gigantic Lobelia, 

 all growing several hundred feet lower than they 

 occur farther north. . 



- From the position where we began the descent, 

 Tanganyika should have been visible, but was 

 shrouded in mist ; I could, however, distinctly see 



Fig. 39. — Hillsides. 



the main course of the ridge on which I stood. 

 This was curving round in a north-westerly direc- 

 tion, until it nearly reached the ridge on the 

 opposite side of the valley, which latter forms the 

 boundary of Tanganyika on the west, and is con- 

 tinued almost due north for, at any rate, 40 

 miles. 



This puts me (now that I have seen Dr. 



