FARM [IMPLEMENTS AND IH/ILDINGS. 



65 



In building and arranging a basement for barn Light and Air 

 (see III. 32) intended for live stock, it is essential to 

 provide for light and pure air. See III. 2g. Accord- 

 ing to scientific experiments, light is a prevention of 



IIA\ C \KKIi;i< V \l> SI,I NGS. 



many infectious diseases. It destroys bad germs, 

 such as those of consumption and diphtheria. It is 

 therefore important that we should arrange to get 



