CARRIAGE BY HOUSE-FLIES 155 



patients. Flies must be of very great importance in the spread of 

 amoebic dysentery, and the results recorded above afford another 

 argument, if, indeed, any further argument is needed, in favour of 

 unceasing warfare against these noxious pests. It may be impos- 

 sible to isolate and cure every carrier case in a large body of men, 

 but much can be done by the careful use of fly-proof latrines and 

 covered receptacles. ^With an efficient system of fly and faeces . 



destruction and arrangements for the prevention of flies coming A 

 into contact with excreta, there is every reason to believe thatx j 

 amoebic dysentery as well as many other intestinal disorders^. 1 



would be very materially reduced, if not entirely eradicated.*/ 



A 



