Table I 
Agglutination 
présent 
Agglutination 
absent 
Persons seen and e.xamined 
on a single occasion 
Trypano¬ 
somes ^ 
Trypano- 
somes 0 
J 
Trypano- j 
somes / 
\ 
No 
? C» 
- 0 
^ C 
o- E 
c 
U (f) 
H 
Tôt al s 
Apparently healthy persons ( 6 ). 
51 
145 (2) 
T 
806 (41 
1 .U07 
Persons selected because of 
cervical glandular enlarge- 
ment. 
81 ( 5 ) 
48 (.1) 
12 
179 
320 
Cases recognised as Sleeping 
Sickness because of their 
symptoms. 
. 5 ' 
19 (1) 
7 
2 
79 
lotals . . . . 
>83 
212 
24 
987 
1.406 
I. 
2 . 
Seven of these cases uilimately died of (( 
Sickness ». 
Four of these [versons ultimately died of « 
Sickness ». 
Sleeping- '] The history is 
/ known of only a 
Sleeping- (small percentage 
1 of these cases 
3. Two of these jjersons ultimately died of (i 
Sickness ». 
4. Ten t)f tliese jjersons died within three 
« Sleeping Sickness ». 
.Sleeping J The history is 
( known of only a 
years of Ivery small percen- 
jtageof these cases 
5. Trypanosomes were found in t)ne of these, an early case, in the céré¬ 
bro-spinal fluid onlv, after a very careful e.xamination had failed to 
find them in the gland juice and blood. 
(). Thirty-one of these ])ersons were Furopeans employed at Léopoldville 
auto-agglutination, without trypanosomiasis, occurred in two of them. 
l'able 1 .shows the incidence of anto-ago-hitination in 1406 pen¬ 
sons in the Con^o l'ree State who w'ere seen tind examinée! on 
one occasion only. Auto-tig'^hilination was présent in 395 of these 
persons ; trvjDanosome.s were onlv foimd in 183 of them. Trypa¬ 
nosomes were aiso found in 24 persons frttm whose blood auto- 
agglutination wxis c'ibsent. 
I 5 eCc'iu.se ot the insufficient search nic'ide for them, it is proba¬ 
ble that in these persons tr\4:)canosome.s were présent much more 
t)ften than they wawe found. 
In iof)7 of these persems only a single fresh coverslip of blood was exa- 
mined, and gland puncture was done in onlv 320 persons with enlarged 
glands and in yq natives, believed to be cases of « Sleeping .Sickness » be- 
cause of the clinical symptoms |:)resent in them. 
