132 



PROFITABLE DAIRYING 



ceiling, and not the bad air, which is to be found 

 near the floor, will be drawn off. These venti- 

 lating flues may be made from wood or from 



EL 



li 



Ed 



* 





^ESSCS^ 



EC 



ii. 



Fig. 37. King system of ventilation. 

 I. Arranged for cows facing outward. 

 II. Arranged for cows facing center aisle. 



galvanized iron, tin, or sheet iron pipe. A single 

 flue 2x2 feet, inside measure, is said to be suffi- 

 cient for twenty cows. The intake flues should 

 be of the same capacity. In stone walls these 

 are usually made of tile. If two or more smaller 

 flues are used, which in the judgment of the 



