228 
Distribution of Hookworms 
North Indians in Fiji. 
Additional data and probably of greater value were obtained in Fiji from 
indentured and free coolies that had come directly from Calcutta. That is 
to say, they had embarked at Calcutta having been recruited from various 
places, for the most part north of 20° N. latitude—Central United and North 
West Provinces and speaking Hindustani—not Tamil or Telegu. 
The information is of great value for there are no Chinese or other 
ancylostome bearing people on the island to complicate the species formula. 
Thirty-four North Indians that had been brought out under indenture 
and had worked in the plantations five years and under were found to harbour 
2480 hookworms, of which 684 were A. duodenale and the remainder N. ameri- 
canus, the gross ancylostome index being 27*5 %. 
The individual percentages vary from nil to 93 as is seen in the following 
table. 
North Indians, Fiji. Years resident in Fiji. 
1 year 
2 years 
3 years 
4 years 
o years 
A. duod. 
Necat. 
A. duod. 
Necat. 
A. duod. 
Necat. 
A. duod. 
Necat. 
A. duod. 
Necat. 
33 
11 
51 
5 
31 
17 
9 
17 
8 
27 
21 
197 
3 
38 
28 
98 
19 
83 
47 
74 
30 
20 
56 
36 
4 
29 
53 
347 
1 
6 
24 
247 
29 
64 
31 
24 
8 
16 
5 
6 
0 
17 
17 
25 
1 
1 
5 
2 
39 
3 
15 
3 
3 
20 
23 
43 
16 
20 
5 
1 
5 
8 
101 
7 
83 
90 
58 
16 
The free Indians or those who elected to remain in Fiji after their indenture 
had expired, were found after 7 to 14 years of residence to have lost a good 
many of their A. duodenale but to have become severely infected with Necator 
—the hookworm of the Fijians and of the country. 
Among 35 Free North Indians the ancylostome index was found to be 
only 4-2 %—a striking illustration of the tendency of the index of the immi¬ 
grants to approach that of the autochthones. 
Other Asiatics from north of 20° N. Latitude. 
Chinese. 
The Chinese fall into two groups (a) those born in China who came to the 
Federated Malay States or Java as adults and ( b ) those born in Indonesia. 
Chinese immigrants to Indonesia come from the Southern Provinces and 
