r 
83 
or as percentages of population (based on number examined): — 
+ - 
+ — 
005 
3-99 
23-99 
The majority (5,000) were from villages closely bordering the 
Luapula, but the results from various other districts visited were much 
the same, so that these figures may be accepted as a fair index of the 
occurrence of enlarged glands throughout tlie whole country. 
In as many cases as was practicable, gland puncture was performed 
and the juices thus obtained examined microscopically. The results 
were: — 
Class 
Number 
Palpated 
Number 
Punctured 
Number 1 
Infected 
% of successful 
punctures 
+ 
5 =^ 
5 
3 
60 
+ - 
3b 
30 
0 
0 
+- 
1837 
297 
0 
0 
From this table it will be seen that in the ‘ +— ’ and ' -j-’ 
groups the result was uniformly negative, while of the five ' + ’ cases, 
three harboured trypanosomes. 
These findings point to the conclusions that slight enlargement of 
the glands commonly occurs unassociated with trypanosomiasis, and 
that excessive enlargement, in practice, means ‘ sleeping sickness.’ By 
this we mean that such cases should certainly be regarded with 
suspicion, and should be isolated until puncture can be performed by 
a properly qualified person. The number of positive cases we have 
seen is altogether too small-to permit of any dogmatic statement as 
to how great a percentage of ‘ ’ glands, in this country, harbour the 
parasites. 
As regards Nyassaland, a report sent to us before leaving England 
shows that of 3,467 natives examined in various parts of that 
• One of these, a child 4 years old, had only one gland, measuring 2x1 cm. 
There was no apparent cause for the enlargement. 
