P. H. Bahr 
153 
private latrines. The only standing water in immediate vicinity is a rock pool, quarter 
of an acre in extent, in the quarry. 
102 children examined—55 males and 47 females. 
Spleen rate 7'8 per cent. ; parasite rate 8'9 per cent. 
Five children regularly treated with quinine. 
Appendix III. 
Details of Malaria Parasites found. 
Malaria parasites were found 45 times in 435 blood specimens. 
The quartan parasite greatly predominated. 
Quartan found 33 times, tertian found 12 times. 
Sub-tertian crescents found three times. 
There were two double infections: one a tertian and quartan, the other tertian 
and sub-tertian crescents. 
One of the 33 times in which the quartan parasite was found, it existed as the 
gametocyte stage and the infection was an extremely scanty one in all cases except 
two. In five instances only one gametocyte cell could be found hi the film. In 
five out of the 11 cases in which the tertian parasite was found, the gametocyte stage 
was also represented ; in three instances also one gametocyte cell only could be found 
in the film. The sub-tertian parasite was found solely in the crescent stage. 
Appendix IV 
Statistics showing the effects of systematic treatment with 
Quinine Pills. 
Of 43 children treated regularly with quinine, 60 "4 per cent, had enlarged spleens, 
13'9 per cent, had parasites in their blood. 
392 had had no regular treatment with quinine, 33\8 per cent, had parasites in 
their blood. 
Appendix V. 
Figures hearing on the Drainage of the Paddy Fields in Kurunegala. 
I am indebted to Mr E. B. Daniels, a recognized authority on paddy land culti¬ 
vation in Kurunegala, for figures regarding the relative values of paddy and cocoanut 
lands in Kurunegala. 
1. Valuation of Paddy Land .—-Paddy land in the centre of the town is appraised 
at Rs. 200 an acre, though the owners’ valuation is in some instances lower than this 
—Rs. 150 an acre. The average value of the best paddy land is about Rs. 250 an 
acre. 
Many of the paddy fields in the town are cultivated but once a year, as the soil 
has lost its fertilizing power through too intense cultivation. 
Parasitology vii 
11 
