1772 



HELMINTH INFECTIONS 



quickest way is to examine the people for anaemia, and treat tfie 

 anaemics with thymol, the eucalyptus-oil mixture, or /3-naphthol, 

 after the examination of the faeces. On estates the method of 

 examining the blood of non-anaemic persons for an eosinophilia 

 might be adopted, as the worms may be present before the anaemia 

 shows itself. The faeces of persons showing eosinophilia should 

 then be examined for ova, and treatment instituted on the findings. 

 Of course a certain degree of eosinophilia is also present in cases of 

 ascariasis and other kinds of helminthiasis. 



With regard to the second method, the formation and use of 

 proper latrines may do much. With regard to estates, tea-bushes. 



Fig, 757. — A Cheap and Easily Constructed Incinerator. 



etc., should not be allowed to grow right up to the coolies' lines, 

 but a clear area should be left, and this should be treated from time 

 to time with quickhme. Further, every alternate row of bushes 

 might be left out in the half-acre adjoining the lines, and in the 

 vacant spaces latrine-holes lined with lime might be dug. The use 

 of bucket -latrines and the destruction of the faeces in a small crude 

 incinerator would be better, and could be easily managed on estates. 

 The best cheap latrine is 'Bailey's patent,' manufactured by the 

 Empire Engineering Company of Cawnpore, at a cost of 118 rupees 

 for a two-seat, and 360 rupees for an eight-seat latrine. 



Leiper has suggested that fruitful results would be obtained from a more 

 detailed study of the larvicidal effects of chemical manures such as ' nitro- 

 line,' etc. According to certain experiments made by this author, it would 

 seem that after treatment with such chemicals human ordure could perhaps 

 be used on the land with safety. 



