J. A. Innes and A. E. Campbell 
195 
The details of the infected appendices are : 
No. 
Sex of patient 
Age 
No. of 0. vcrmicularis 
Males Females 
Total 
Type of appendicitis ' 
1 
F 
22 
0 
1 
i 
Recurrent 
2 
F 
7 
10 
10 
20 
Acute catarrhal 
3 
M 
22 
5 
14 
19 
Recurrent 
4 
F 
15 
1 
3 
4 
Recurrent 
5 
M 
12 
21 
21 
42 
Recurrent 
6 
F 
19 
1 
0 
1 
Subacute catarrhal 
7 
F 
17 
0 
1 
1 
Recurrent 
8 
F 
24 
0 
1 
1 
Recurrent 
9 
F 
23 
0 
1 
1 
Recurrent 
10 
M 
23 
1 
1 
2 
Subacute catarrhal 
11 
12 
M 
11 
1 
11 
12 
Recurrent 
F 
6 
0 
4 
4 
Acute catarrhal 
13 
F 
17 
1 
1 
2 
Recurrent 
14 
M 
21 
0 
2 
2 
Recurrent 
15 
F 
12 
2 
4 
6 
Recurrent 
16 
F 
23 
0 
1 
1 
Subacute catarrhal 
17 
M 
18 
0 
2 
2 
Recurrent 
It is a matter of some importance to note the various sizes of worms 
found, in connection with the degree of maturity attained by them. 
The length of the female worm is given by authorities as from 9 to 12 mm. 
and that of the male worm as from 2 to 5 mm. Out of the 121 Oxyuris 
measured, no female worm exceeded 9 mm. in length, and only one 
specimen gave that measurement. The average length of the female 
was from 5 to 6 mm., and 3 mm. in the case of the male. 
Judged by size, the worms found in the appendix were not mature, 
but the males had reached a further state of development, on an average, 
than the females. 
Still (1909) discusses this point of immaturity, and holds that this 
is a good reason for believing the appendix to act as a breeding ground 
for Oxyuris. He doubts if infection is kept up solely by the repeated 
swallowing of ova. 
Percentage of Infected Cases. 
The percentage of infection, viz., 17 % in all cases of appendicitis, 
is undoubtedly lower than what it would be if the appendices had been 
examined under conditions which excluded any possible source of error. 
In spite of every means being taken to attain the greatest accuracy, it 
