Ventilation of Farm Buildings. 



357 



tion it is cubic feet of air rather than cubic feet of space 

 which should be provided, and in the construction of stables 

 the amount of space need be only so much as is required to 

 permit ample room and freedom to care for the animals. 



FIG. is?. Two methods of ventilating a dairy barn. On the right the ven- 

 tilating flue D F rises straight from the floor, passing out through 

 the roof and rising above the ridge. One, two, or three of these 

 would be used according to number of cattle. The flues should be at 

 one or the other side of the cupola rather than behind it. On the 

 left C E represents how a hay shoot may be used also for ventilating 

 flue. In each of these cases the ventilating flue would take the place 

 of one cow. This method would give the best ventilation but has 

 the objection of occupying valuable space. C, in the feed shoot, is 

 a door which swings out when hay is being thrown down, but is 

 closed when used as a ventilator, the door not reaching quite to the 

 floor. To take air into this stable if it is built of wood with studding, 

 openings would be left at A about 4x12 inches every twelve to six- 

 teen feet, and the air would enter and rise between the sheeting 

 of the inside and the siding on the outside, entering at B as repre- 

 sented by the arrows. If the barn is a basement or stone structure 

 the air intakes could be such as described in figures 150, 151, and 152. 



Twenty cows should not be housed in a space much less 



than 28x33 feet, with ceilings 8 feet in the clear. In 



warm climates there is no objection, except the matter of 



cost, to high stables, but where it is cold high ceilings per- 



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