68
The following table gives the results of the systematic examination of
1,228 stomachs of N. stephensi :-
Examination of Midgut for Zygotes.
Month.
Number dissected.
Number infected.
Percentage infected.
Total zygotes seen.
1909.
July
69
11
15.2
36
August
103
12
11.7
56
September
32
3
9.3
7
October
27
3
11.1
10
November
18
December
10
1910.
January
12
February
10
March
April
12
May
59
June
25
July
105
12
11.4
108
August
75
14
18.6
158
September
71
10
14.0
52
October
82
9
10.9
35
November
60
5
8.3
6
December
67
5
7.4
29
1911.
January
153
6
3.9
15
February
173
1
0.5
2
March
65
Total
1,228
91
7.4
The result of the examination of 1,217 salivary glands of Neocellia
stephensi is given below:-
Month.
Number dissected.
Number infected.
Percentage infected.
1909.
July
63
1
1.5
August
70
4
5.7
September
56
2
3.5
October
14
1
7.1
November
18
December
11
1910.
January
6
February
March
April
11
May
14
June
15

July
90
9
10.0
August
158
5
3.1
September
79
4
5.0
October
94
2
2.1
November
60
1
1.6
December
67
1911.
January
153
1
0.6
February
173
March
65
Total
1,217
30
2.4