PRINCIPLES OF FARM PRACTICE 



germs or bacteria. True cleanliness is the kind that removes 

 most of the danger of disease from germs. 



Source of infection is not a pleasant subject to consider, 

 but it is one on which every one should be informed. Con- 

 tamination from the wastes of the human body is a most 



Plan of installation of complete system for disposal of house- 

 hold wastes. Distance of septic tank from house should be at 

 least fifty feet. (Cornell Agricultural Experiment Station.) 



common source of disease. The custom of placing outdoor 

 toilets near wells is a dangerous one. The origin of many 

 cases of typhoid fever has been traced to wells into which 

 wastes have entered from toilets. 



