266 LIVINGSTONE'S LAST JOURNALS. [Chap. X. 



also found at Katanga, and specimens were lately sent to the 

 Sultan of Zanzibar. 



As we come down from the watershed towards Tanganyika 

 we enter an area of the earth's surface still disturbed by 

 internal igneous action. A hot fountain in the country of 

 Nsama is often used to boil cassava and maize. Earth- 

 quakes are by no means rare. We experienced the shock: of 

 one while at Chitimba's village, and they extend as far as 

 Casembe's. I felt as if afloat, and as huts would not fall 

 there was no sense of danger ; some of them that happened at 

 night set the fowls a cackling. The most remarkable effect 

 of this one was that it changed the rates of the chronometers ; 

 no rain fell after it. No one had access to the chronometers 

 but myself, and, as I never heard of this effect before, I may 

 mention that one which lost with great regularity l s *5 

 daily, lost 15 s ; another; whose rate since leaving the coast 

 was 15 8 , lost 40 s ; and a third, which gained 6 s daily, stopped 

 altogether. Some of Nsama's people ascribed the earth- 

 quakes to the hot fountain, because it showed unusual com- 

 motion on these occasions ; another hot fountain exists near 

 Tanganyika than Nsama's, and we passed one on the shores 

 of Moero. 



We could not understand why the natives called Moero 

 much larger than Tanganyika till we saw both. The 

 greater Lake lies in a comparatively narrow trough, with 

 highland on each side, which is always visible ; but when we 

 look at Moero, to the south of the mountains of Eua on the 

 west, we have nothing but an apparently boundless sea 

 horizon. The Luapula and Eovukwe form a marsh at the 

 southern extremity, and Casembe dissuaded me from en- 

 tering it, but sent a man to guide me to different points 

 of Moero further down. From the heights at which the 

 southern portions were seen, it must be from forty to sixty 

 miles broad. From the south end of the mountains of Eua 

 (9° 4' south lat.) it is thirty-three miles broad. No native 



