THE HOUSE FLY AND DISEASE 85 



Example of a City Fly Campaign. — As an example of what 

 may be accomplished in a city against the house fly we can cite 

 the results of a fly campaign that was carried on in Cleveland, 

 Ohio, during the years 1912 and 1913. Interest was created in 

 the public schools by the teachers and among the rest of the 

 people through the newspapers. First, the over-wintering flies 

 were attacked. Two hundred thousand fly swatters were dis- 

 tributed and ten cents per hundred flies was paid as a bounty. 

 Fifty thousand mother flies were killed in this way, at a compar- 

 atively low cost. The citizens soon became sensitive to the 

 presence of flies and as their numbers increased with the advance 

 of summer, dealers in meats and provisions, and the proprietors 

 of lunch rooms and restaurants were obliged to clean up the 

 breeding places and kill off the adult flies if the}'- wished to keep 

 their customers. Many of the school children aided in the cam- 

 paign. The boys joined the Junior Sanitary Police Force for 

 the purpose of discovering unsanitary conditions in yards, alleys, 

 and vacant lots, and the girls were organized as Sanitary Aides 

 with the duty of decreasing the number of flies in stores where 

 food was kept. " Before the close of the school year streets 

 were cleaned, alleys and vacant lots ceased to be dumping 

 grounds for filth, and the rubbish from back yards gave way to 

 gardens of flowers and vegetables." ' Any city can carry out 

 a similar campaign, and many of them, in fact, are doing so. 



REFERENCES 



Microbiology, edited by C. E. Marshall. — P. Blakiston's Son and Co., 

 Philadelphia. 



House-Flies and How They Spread Disease, by C. G. Hewitt. — Cambridge 

 University Press, England. 



Bulletins and Circulars published by the Bureau of Entomology, U. S. De- 

 partment of Agriculture. 



1 Dawson, J., Eliminating a City's Filth and Flies. 



