INSECTS AFFECTING MAN AND ANIMALS 177 



and the carriage of typhoid germs from the latrines and 

 privies to food by flies is common and often results in epi- 

 demics of typhoid fever. ... In farmhouses in small com- 

 munities and even in the badly cared-for portions of large 

 cities typhoid germs are carried from excrement to food by 



FIG. 126. Window fly trap showing bait tray removed. 



flies, and the proper supervision and treatment of the breed- 

 ing places of the house fly become most important elements 

 in the prevention of typhoid. 



"In the same way other intestinal germ diseases are 

 carried by flies. The Asiatic cholera, dysentery, and in- 

 fantile diarrhea are also carried. . . . There is strong cir- 



