SOUTHERNMOST RESERVOIR OF THE NILE. 307 



MOST Reservoir oe the Nile until some more 

 positive evidence, by actual observation, shall 

 otherwise determine it.' 



To this view the geographical public offered 

 two objections. The first was that the northern 

 end of the Tanganyika is encircled by the ' con- 

 cave of the Mountains of the Moon.' This was 

 easily removed, as the reader of these pages will 

 see, by a collation of the several maps forwarded 

 by the Expedition from the interior. The first, 

 bearing date May, 1858, was sent from Kazeh on 

 July 2, 1858 : it showed the results of our 

 discovery (in February, 1858) and of the inform- 

 ation supplied to me by narratio obliqua through 

 the Arabs and Africans of Unyanyembe. Having 

 no theory to support, it laid down, what we saw 

 or thought we saw, an open longitudinal valley 

 running northwards from the Tanganyika Lake. 

 But that which my companion brought home in 

 June, 1859, bore signs of great change, especially 

 in a confused mass of mountains completely in- 

 vesting the northern third of the long narrow cre- 

 vasse : this by degrees resolved itself into a huge 

 horseshoe, which was incontinently dubbed the 

 ' Mountains of the Moon, about 6000 feet.' In 

 his second expedition (Journal, p. 2G3) Capt. Speke 

 declares that the range had been laid down ' solely 



