BUILDINGS 



309 



depth of about two feet, in order to prevent draughts about 

 the floor. This method of housing sows is better than close 

 confinement in warm pens, and will be found to answer very 



2-4 



N 



/I' 



Fia. 76. Front view of portable pen. 



FIG. 77. End view of portable pen. 



well when other means to provide shelter and exercise are not 

 available. 



The A-shaped Pen. The accompanying sketches (Figs. 78 

 and 79) show a convenient portable pen which may be used 



