EFFECTS OF EXPOSURE. 
309 
lucky to throw these away, and a beautiful convolvu- 
lus (Argyreia sp) with immense mauve flowers, was 
planted by their side. With a branch of this plant in 
the hand of the hunter, it is believed that he is certain 
of sport. 
The millstone in use here is a slab from the brick- 
red, rough-grained granite seen along the pathways, 
and it is placed inside a hut, embedded in and edged 
round with clay. Any round stone in the hands of a 
woman, who kneels to her work, rubs down the grain, 
These stones had not been seen in Uganda, as the people 
there seldom grind corn. Another slab, with irregular 
fracture, seemed of hornblende, as waving lines ran 
through it. 
In our short experience we did not observe much 
disease amongst the people, and the country, where it 
sloped down to the Nile with an eastern exposure, 
appeared very healthy. Wens on the forehead and 
behind the ear were noticed upon some men ; and a 
woman, whose hand had been cut off, probably for some 
misdemeanour when in Uganda, was the only maimed 
person we saw. She appeared to be an old vixen. 
Exposure in an open canoe during the heat of the 
day is very trying, and told on both of us, causing 
sick headaches. There was nothing, when the river 
was broad, to rest the eye upon but its glassy surface, 
consequently we were glad to come upon cataracts and 
proceed by land. On the eighth and ninth days from 
the time we embarked, both of us had attacks of fever, 
sickness, and dysentery. 
After a severe day of illness during the march, 
I arrived in camp exhausted, at dusk of the 19 th 
November, and found Speke also unwell,- but with 
