







19 



7 













1918 







Month 



July 



August 



September 



October 



November 



December 



January 



February 



March 



April 



May 



June 



Week 



12 3 4 



12 3 4 



Absent 



12 3 4 



12 3 4 



12 3 4 



12 3 4 5 



12 3 4 



12 3 4 



Absent 



12 3 4 



12 3 4 



15 











1 K 



i r 





ft 



■0 













14 



350 





> v 





J 







3 



3 

 c 



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<u 













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ti 





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12 

 II 



300 



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 5 





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10 



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t 



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Rainfa// in inches per month — — — — . A/umber of Anopheles caught per week' 



Number ofCu/ex group caught per week ■ 



