E. Hilt 
313 
Table showing species and sex of Anktjlostoma worms discharged in 
faeces of each of 18 Indians. 
Duration of 
Residence 
in years 
Necator 
ainericanus 
Anlcylostoma duodenale 
Male 
-\ 
Female 
r 
Male 
Female 
Total 
Over 10 
19 
34 
0 
0 
53 
7 
27 
45 
19 
19 
110 
6 
5 
33 
— 
— 
38 
4 
9 
27 
1 
1 
38 
4 
1 
8 
1 
— 
10 
4 
16 
31 
8 
8 
63 
4 
2 
18 
— 
6 
26 
4 
84 
85 
— 
1 
170 
3 
1 
6 
— 
— 
7 
3 
3 
17 
1 
7 
28 
3 
9 
24 
1 
— 
34 
3 
2 
14 
1 
— 
17 
3 
— 
12 
— 
— 
12 
2 
12 
35 
2 
2 
51 
i 
2 
28 
— 
— 
30 
i 
7 
16 
— 
— 
23 
i 
19 
36 
— 
— 
55 
i 
2 
3 
17 
37 
59 
220 
472 
51 
81 
824 
