HOUSING AND CARE OF COWS 



87 



all times to the main shaft to help force the draft. This ventilat- 

 ing shaft is made of galvanized iron, the upper portion being 3 

 feet in diameter. The covering on the outside is simply for archi- 

 tectural effect. G F show method of intake of air. 



Sketch C — Section of the cow stable of 'the dairy barn at the Wisconsin 

 Experiment Station. 



In mild climates a single storied, high studded (10 to 12 ft.) 

 barn may be best, without the King system of ventilation but with 

 a monitor roof. This resembles a small second story running along 

 the top of the main roof and having numerous windows in its side 

 and ventilators on its top — both to aid ventilation. 



