346 
AFRICA AND ITS EXPLORATION. 
months, I thought there might still be a chance of 
obtaining them, before setting out westward, by des- 
patching messengers to Unyanyembe. Announcing my 
intentions to the governor, I obtained a promise that 
he would collect other men, as he and several Arabs at 
Ujiji were also anxious to communicate with their 
friends. Manwa Sera therefore selected five of the 
most trustworthy men, the Arabs also selected five of 
their confidential slaves, and the ten men started for 
Unyanyembe on the 3rd of June.* 
Before departing on the voyage of circumnavigation 
of Lake Tanganika, many affairs had to be provided for, 
such as the wellbeing of the Expedition during my 
absence, distribution of sufficient rations, provisioning 
for the cruise, the engagement of guides, &c. 
The two guides I obtained for the lake were Para, 
who had accompanied Cameron in March and April 
1874, and Ruango, who accompanied Livingstone and 
myself in December 1871 to the north end of Lake 
Tanganika. 
The most interesting point connected with this lake 
was its outlet. Before starting from Zanzibar, I had 
heard that Cameron had discovered the outlet to Lake 
Tanganika in the Lukuga river, which ran through 
Uguha to the west, and was therefore an affluent of 
Livingstone’s great river. 
In Commander Cameron’s book, vol. i. p. 305, the 
following sentences, bearing upon what he personally 
saw of the Lukuga, are found : 
“ In company with the chief, I went four or five 
miles down the river, until navigation was rendered 
impossible, owing to the masses of floating vegetation. 
Here the depth was three fathoms, breadth 600 yards, 
current one-and-a-half knots, and sufficiently strong to 
drive us well into the edge of the vegetation. I noticed 
that the embouchures of some small streams flowing 
* My five trustworthy men arrived at Unyanyembe within fifteen days,, 
but from some cause they never returned to the Expedition. We halted 
at Ujiji for seventy days after their departure, and when we turned our 
faces towards Nyangwe, we had given up all hopes of hearing from 
civilization. 
