426 



A YEAR IX SCIENCE 



before it reaches our kitchen, we may be certain it is 

 bringing with it hundreds of disease producing germs. 

 Until we get rid of flies, it is very important that by 

 screening we keep them away from our food and away 

 from the sick room. 



Fig. 189. Foot 

 of a fly, showing 

 hooks, hairs, and 

 pads to which 

 germs easily ad- 

 here. 



Permission U. S. Dept. of Agriculture. 



Fig. 190. Gelatine plate showing bac- 

 teria in fly foot prints. 



The most effective way of abolishing this pest is to 

 prevent it from breeding. This can be done by remov- 

 ing the dirty places in which it breeds. Manure and 

 garbage should be kept in closed cans or boxes, and 

 frequently removed and destroyed. The neighborhood 

 should be kept clean and sanitary so that the fly can 

 not find a place in which to lay her eggs. Any cam- 

 paign against the fly must be directed against filth as 

 well as against the adult fly. 



