COW-BYEES 



149 



2. Ventilation and Air Space. — Ventilation will be amply provided 

 for if openings, extending the full length of the byre, be left between 

 the top of each side- wall and the corrugated iron of the roof, and if the 

 roof be left open along the ridge. The openings between the top of 



Fig. 128. 



each side-wall and the iron of the roof may be 3 inches wide, while 

 the opening along the ridge of the roof may have a width of 18 inches 

 protected by a raised, curved ridge-cap as shown in the accompanying 

 drawings. 



The doors should be hung about 1 inch clear of the floor, so that 



