2 THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
journey, we visited many villages and made tiresome expeditions to visit those 
especially mentioned to us, not a single case of illness did we see in which sleep was 
a marked feature. 
We stayed for some time at the Baptist Missionary Society's station at Wathen, 
in the Lutete district, where we received hospitality and assistance at the hands of 
those in charge of the mission. From here excursions were made into the surrounding 
district, and a large number of persons brought to us as cases of sleeping sickness 
were examined. 
These consisted of a heterogeneous collection of men, women, and children, many 
of whom were found to be suffering from heart, lung, and other more or less common 
ailments. Amongst the boys it seemed that a diagnosis of ' worms ' was sufficient in 
many cases to account for the symptoms. Cases of apparent starvation and neglect 
were also common, and it appeared from what we were told that, owing to there 
being a general belief in the contagiousness of' manimba' — the native name for what 
is believed to be sleeping sickness — children and even adults were, as soon as the 
slightest symptoms developed, liable to be isolated and shunned by everyone, causing, 
eventually, a state of emaciation and tilth which ended sooner or later in death. 
Apart from these, however, and eliminating the many common ailments, there still 
remains in the cataract region a class of cases which, undoubtedly, terminate fatally 
within a year or two. These cases, of which most villages visited by us contained 
one to three examples, have few very evident symptoms of illness beyond emaciation, 
and, in some cases, weakness, headache, enlargement of lymphatic glands, and dirty, 
dry, scurvy skin. In a proportion of these cases trypanosomes were found in the 
peripheral blood, and we think it probable that it a systematic examination were 
possible, the parasites would be found in a much larger number. 
Trypanosomes have been found in the finger blood both of those cases in which 
the diagnosis ot sleeping sickness was certain, and of those in which the case picture 
was atypical. In addition, trypanosomes have been frequently seen in the peripheral 
blood of apparently healthy individuals. The routine method adopted for the 
detection of the parasites in the peripheral blood ot unsuspected cases was the simple 
examination of a rather thick, freshly-made, cover-slip preparation. All of the 
following persons were examined in this way : — 
