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To INVESTIGATE EUROPEAN MALARIA 



I. Examine the blood of as many Europeans 

 as possible. Enquire carefully whether the person is 

 taking quinine at the time, also take the temperature. 



(i) The number shewing parasites or crescents. 



(ii) The presence of pigmented leucocytes. 



(iii) The presence of an increase of the large 

 mononuclear leucocytes. 



In every case make a differential count of the 

 leucocytes and keep the record. 



Observe especially, any community of Europeans 

 shewing a larger percentage than usual of malarial 

 infection. Note the conditions under which these 

 are living, and note also the probable greater prevalence 

 of blackwater fever in these communities, e.g., Roman 

 Catholic Fathers, West African miners, railway com- 

 munities, Europeans in poor circumstances living in 

 the slums of native towns, etc., Syrian hawkers, etc. 

 Note those communities habitually taking quinine. 



Large 



camp 



European quarters oa ~ 

 Native quarters -~ 



Fig. 70. Shews how Europeans are injected with Malaria 

 from the native (children) 



