BLACKWATER FEVER 
215 
Author 
Day before hemoglobinuria 
Day of hemoglobinuria 
Day after onset 
No. of cases 
No. positive 
No. of cases 
No. positive 
No. of cases 
No. positive 
A. Plehn ... 
5 
5 
5 
3 
1 O 
2 
F. Plehn ... 
0 
0 
2 I 
18 
IO 
3 
Koch 
5 
5 
8 
6 
6 
1 
Stephens and Christophers 
1 
1 
9 
2 
16 
0 
l.ANIELS ... 
3 
3 
3 
1 
2 
0 
Panse 
9 
8 
'7 
9 
20 
5 
Total 
23 
2 2 
63 
39 
6+ 
1 1 
Percentage Positive 
9 5 "6 per cent. 
6 1 - 9 per cent. 
171 P < 
;r cent. 
It is almost unnecessary to add any comment for the figures shew conclusively 
that when examined before the onset of the blackwater, parasites are present in 95-6 
per cent, of cases, whereas on the day after, when it will be noticed the highest num- 
ber of cases (sixty-four) was examined, the remarkable fall to iyi percent, is the 
result. On the day of the blackwater itself, we have only a figure of 61*9 per cent, 
instead of 95-6 per cent. To assume, as has been done, that malaria in these cases 
is only an accidental concomitant seems to be to disregard common sense. My 
intention here is solely to draw attention to the great importance of an early examination, 
it malarial parasites are to be found. 
