71 
By the following arrangement, however, we have managed to 
include most of the statistics of the prevalence of Trichuris, Oxyuris, 
and Ascaris at different ages as reported by various authors . a 
Examined. 
Infected. 
Per cent. 
Trichuris trichiura: 
0-1 year 
66 
0 
0.00 
1-3 years 
64 
1 
1.56 
0-5 years 
228 
16 
7.02 
3-5 years 
61 
6 
9.84 
5-10 years 
203 
52 
25.62 
0-15 years .• 
2,381 
400 
16.80 
5-15 years 
427 
101 
23.65 
10-15 years 
224 
49 
21.88 
15-20 years 
121 
3 
2.48 
15-30 years 
733 
41 
5.59 
20-30 years 
255 
16 
6.27 
30-40 years 
232 
19 
8.19 
30-50 years 
728 
66 
9.07 
40-50 years 
139 
12 
8.63 
50-60 years 
78 
6 
7.69 
50-70 years 
108 
9 
8.33 
50 4- years 
226 
16 
7.08 
60-70 years 
30 
3 
10.00 
70-80 years 
10 
0 
0.00 
70-t-vears 
13 
0 
0.00 
80+vears 
3 
0 
0.00 
Ascaris lumbriccid.es: 
0-1 year 
66 
0 
0.00 
1-3 years 
64 
3 
4.68 
0-5 years 
228 
17 
7.46 
3-5 years 
61 
3 
4.92 
5-10 years 
203 
47 
23.15 
0-15 years 
2,381 
444 
18.65 
5-15 years 
427 
94 
22.01 
10-15 years 
224 
47 
20.98 
15-20 years 
121 
21 
17.36 
15-30 years 
733 
50 
6.82 
20-30 years 
255 
6 
2.35 
30-40 years 
232 
15 
6.47 
30-50 years 
728 
35 
4.81 
40-50 years 
139 
4 
2.88 
50-60 years 
78 
1 
1.28 
50-70 years 
108 
2 
1.85 
50+years 
226 
5 
2.21 
60-70 years 
30 
1 
3.33 
70-80 years 
10 
0 
0.00 
70-4- years 
13 
1 
7.69 
80+ years 
3 
1 
33.33 
Oxyuris vermicularis: 
0-1 year 
66 
0 
0.00 
1-3 years 
64 
17 
26.56 
0-5 years 
169 
-O 
14.79 
a Heavy-faced type indicates the age-groups which correspond in years to those into 
which our own patients were divided. 
