KING INSTITUTE, GUINDY, FOR 1927–28            17

       Evidence of malaria.—The spleen and parasite rates from the examination of
children are given below:—

TABLE I.—The spleen and parasite rates in Udayagiri.
Name of village. Total number of
children
examined.		 Spleen rate. Index of
size of
spleen.		 Parasite
rate.
    PER CENT. C.M. PER CENT.
Udayagiri (main village). 150
(for spleen).
100
(bloods).		 53.3 8 96
Gengureddipalli (hamlet). 15 73.3 8.1 40
Ganugapentapalli 25 36 9 64
Massayapet 25 68 9.2 80
Total 215 54.4 8.4 83.6

       It is apparent that the spleen rate is high. The average is 54 per cent.
This is evidence that malaria has been at a high level for some time. The average
index of the size of the spleen (Christopher's method) is 8.4 which shows that on
the average the enlarged spleens are moderately big, suggesting that hyperendemic
conditions have been established for some time. From the statistics embodied in
the curves for malaria in charts I and II the continuous epidemic period has been
18 months which is probably sufficient to account for the findings. The high
percentage of children with parasite in their blood is astonishing—almost 100 per
cent in the main village. Malignant and benign tertian parasites were found in
practically equal proportion as is evident from table II. In one-third of the
total cases both species were found.

TABLE II.—Species of parasites.
Name of village. Total
number
of
positives.		 Malig-
nant tertian.
er		 Benign
tertian.		 Quartan. Mixed
M.T.
and
B.T.
Udayagiri (main village) 96 25 30 ... 41
Gengureddipalli (hamlet) 6 6 ... ... ...
Ganugapentapalli 16 8 4 ... 4
Massayapet 20 4 1.3 ... 3
Total 138 43 47 ... 48

       A small but representative number of adults were examined. The spleen and
parasite rates are given below:—

TABLE III.—Adult spleen and parasite rates.
Name of village. Number of
adults
examined.		 Spleen rate. Parasite
rate.
    PER CENT. PER CENT.
Udayagiri (main village) 50 28 24
Gengureddipalli (hamlet) 26 30.77 15.4
Ganugapentapalli 22 ... 4.5
Massayapet 30 20 16.6

       As was to be expected the adult rate are much lower than those of children.
The hamlet Ganugapentapalli maintains its position as the least affected by
malaria.

       Mosquitoes.—Both anophelines and culicines abounded in the houses and this
despite the late season. Not only had there been rain in March which was
unusual but showers also fell in April during the survey. It was noted that

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