208 SLEEl'ING SICKNESS, FLIES, AND DISEASE 



DEATHS EKOM SLEEPING SICKNESS IN BUGANDA 



KINGDOM 



THE SEPTIC FLY {Musca domestica) 



The awakening of interest in in.sects as carriers of 

 disease by the study of the tropical diseases, malaria, 

 yellow fever, plague and tsetse fly disease, has 

 been chiefly instrumental in drawing om- attention 

 to the danger of the common house fly. Recently 

 Howard of Washington has proposed to substitute 

 the name " typhoid fly " instead of house fly. He is 

 indeed justifled in doing so, for there is overwhelming 

 proof that the house fly is one of the important 

 carriers of that disease. It has been more especially 

 during military campaigns that e\idence to this effect 

 on a vast scale has been forthcoming, but in the 

 case of villages and towns we have abundant e\'idence 

 also of tlie acti^•ity of the fly in spreading typhoid. 

 Inasmuch, however, as the common fly is equally 

 able to tran.smit cholera, tuberculosis, and the various 

 intestinal bacteria associated with the diarrhoea pre- 



