PROPHYLAXIS 189 



FIG. 73. Disposal of Excrement as Manure. Chinese method. 



(l) Chinaman taking from public latrines (2) Decanting into his manure pit where, 



in a Government receptacle fresh human if kept long enough^ the eggs of most 

 ordure. entozoa will be destroyed. It is rarely 



kept long enough. 



(3) Filling his private bucket with the 

 contents of manure pit, consisting in part of 

 faeces kept sufficiently long for eggs to be 

 destroyed, but in part sufficiently fresh for 

 eggs to retain their vitality. To the con- 

 tents of this bucket water is usually added. 



(4) Watering vegetables, including those 

 used for salads or eaten raw, with the con- 

 tents of this bucket. The great prevalence 

 of "flukes" (Trematoda) amongst the 

 Chinese is probably due to the general use 

 of some such method. 



