553 
GEOGRAPHICAL RESULTS. 
to give an idea of the difficulties encountered in following 
up the central line of drainage through the country of the 
cannibals, called Manyuema or Manyema. I found it a 
year afterwards, where it was left. Other letters had made 
no further progress to the coast; in fact Manyema country 
is an entirely new field, and nothing like postage exists, 
nor can letters be sent to Ujiji except by large trading 
parties who have spent two or three months in Manyema. 
The geographical results of four arduous trips in differ- 
ent directions in the Manyema country, are briefly as 
follows: — The great river, Webb’s Lualaba, in the centre 
of the Nile valley, makes a great bend to the west, soon 
after leaving Lake Moero, of at least one hundred and 
eighty miles ; then turning to the north for some distance, 
it makes another large sweep west of about one hundred 
and twenty miles, in the course of which about thirty 
miles of southing are made ; it then draws round to north- 
east, receives the Lomani, or Locki, a large river which 
flows through Lake Lincoln. After the union a large lake 
is formed, with many inhabited islands in it; but this has 
still to be explored. It is the fourth large lake in the cen- 
tral line of drainage, and cannot be lake Albert ; for assum- 
ing Speke’s longitude of Ujiji to be pretty correct, and my 
reckoning not enormously wrong, the great central lacus- 
trine river is about five degrees west of Upper and Lower 
Tanganyika. 
The mean of many' barometric and boiling point obser- 
vations made Upper Tanganyika 2880 feet high. Respect 
for Speke’s memory made me hazard the conjecture that he 
found it to be nearly the same, but from the habit of writ- 
ing the Annum Domini a mere slip of the pen made him 
say 1844 feet; but I have more confidence in the baro- 
meters then in the boiling points, and they make Tangan- 
yika over 3000 feet, and the lower part of Central Lualaba 
one inch lower, or about the altitude ascribed to Gondokoro. 
Beyond the fourth lake the water passes, it is said, into 
large reedy lakes, and is in all probability Petheriek’* 
