FARM SANITATION 509 



quate window surface does not add materially to the cost of 

 the construction and should not be admitted for this reason. 

 Wide buildings and basement barns cannot be lighted well, 

 and for this reason should be guarded against. It is to be 

 remembered in this connection that natural lighting is only- 

 one factor in providing sanitary quarters. Cleanliness and 

 ventilation are more important; but none of these features 

 should be neglected. 



QUESTIONS 



1. Describe the changes which have taken place in the natural 

 lighting of farm buildings. 



2. What is the threefold purpose of the natural lighting of farm 

 ouildings? 



3. What value has direct sunlight in destroying disease germs? 



4. Discuss how windows should be located to be the most effective. 



5. What should be the general shape of windows, and what may- 

 be said concerning the thickness of casings and width of eaves? 



6. Discuss the relation between window surface and floor surface 

 in different types of buildings. 



