The House-Fly and Its Near Relations 



horses are very much on the decrease in cities; the motor 

 vehicles of different kinds are becoming multiplied, and with 

 this change will come a decrease, and a marked one in the num- 

 ber of house-flies. In the country and in agricultural communi- 

 ties there is not much hope in the near future except through 

 better knowledge on the part of the inhabitants and an effort to 

 do away with the breeding places of this nuisance. 



170 



