Up the Congo to Banza Nokki . 133 
ya Nzondo, which others call Sanga ya Ngondo ; 
in the chart this one-tree island is written “ Catlo 
Zonda,” it is the first of two similar formations. 
Oscar Rock, its western (down stream) neighbour, 
had shared the fate of “ Soonga lem Paccula,” 
(Zunga chya Makula ?) a stone placed in the map 
north-east of the Makula or Annan debouchure ; 
both were invisible, denoted only by swirls in the 
water. We had taken seven hours to cover what 
we easily ran down in two, and we slept com¬ 
fortably with groan of rock and roar of stream 
for lullaby. 
September 7.—Our course now lay uninter¬ 
ruptedly along the left bank, where the scenery 
became yet more Rhine-like, in natural basins, 
reaches on the chart: here and there rugged up- 
rocks passably simulated ruined castles. The 
dwarf bays of yellow sand were girt by a goodly 
vegetation, the palm and the calabash only telling 
us that we were in Africa. 
Our men pointed to the work of a Nguvu or 
hippopotamus, which they say sometimes attacks 
canoes; they believe with Tuckey that the river- 
horses cause irregularity of soundings by assem¬ 
bling and trampling deep holes in the bed ; but the 
Ngadi is a proof that they do not, as M. du Chaillu 
supposes, exclusively affect streams with shoals 
and shallows. The jacare (crocodile) is known 
especially to avoid the points where the current 
