MALARIA EXPEDITION TO NIGERIA 61 
TABLE VI 
Name 
Date 
No. 
OF FlLARIAE IN 
THREE SPECIMENS AT 
A.M. 
P.M. 
3 
6 
9 
1 2 
3 
6 
9 
1 2 
I. Robert 
I 2. 
vii. 00 
0 
8 
84 
58 
66 
+7 
0 
0 
2. Adeyemi 
27. 
viii. 00 
0 
3 
8 
48 
7 
3 
0 
0 
3. Obudu 
27. 
viii. 00 
0 
10 
2 1 
32 
8 
1 
0 
4.. Garuba 
*7- 
viii. 00 
0 
1 
2 7 
52 
38 
9 
0 
0 
5. Apanituen 
20. 
vii. 00 
1 
3 
7 
8 
3 
0 
0 
0 
It has not been easy to pick out from our records a fair number or cases either 
of F. nocturna or diurna which may be said to be absolutely typical ; thus only eight 
cases of F. nocturna and only five of diurna could be found. We propose to call a 
case typical when the maximum number of embryos are present in the blood at mid- 
day or midnight as the case may be, or about those hours and when twelve hours 
later they are absent from peripheral blood. 
The majority of the cases which we encountered on the West African coast 
were then atypical, in that, embryos were never absent from peripheral blood, or the 
maximum did not occur at mid-day and midnight or thereabouts according to the 
species. Among the former cases there were many shewing decided periodicity and 
among the latter, the hour at which the maximum number was present, varied 
considerably. In some cases two maxima during the twenty-four hours were indicated. 
Table VII shews a few cases in which though a decided periodicity is to be noted, 
embryos are never absent from peripheral blood. 
TABLE VII 
Name 
Date 
Number of Embryos in three 
SPECIMENS 
AT 
A.M. 
P. 
M. 
3 
6 
9 
1 2 
3 
6 
9 
1 2 
i. Davis 
1 2. 
vii. 00 
1 2 
61 
+25 
478 
197 
252 . 
1 2 
9 
2. Ajaca 
27. 
viii. 00 
9 
20 
10 
5 
3 
35 
18 
3. Arrigwe 
3- 
vii. 00 
7 
6 
16 
58 
58 
45 
+ 
4. Ijululockia ... 
20. 
vii. 00 
15 
18 
56 
61 
2 5 
1 
1 
3 
