128 PROFITABLE DAIRYING 



passage of air, but keep out the storm. The fresh 

 air enters at the windward; the warm air escapes 

 to leeward. 



In cold weather this system works perfectly; in 

 warm, foggy weather, the circulation is sluggish and 

 the ventilation not active enough. Then a slide 

 door put in at the end of the driveway may be partly 

 opened. This makes the circulation sufficient to 

 ventilate the barn perfectly at all times. Another 

 opening under breast girts in the center of the barn 

 is made for the purpose of throwing down bedding 

 material, but this is never used for ventilating pur- 

 poses. The other places are also used as hay 

 chutes. In dropping from these to the floor of the 

 basement, the major part of the dirt is shaken out. 



FEED ROOM 



In one corner of the barn is a room for storing 

 feed. It is divided into bins, one of which is 

 used for mixing. From it there is a spout leading to 

 a box in the stable below. On the opposite side of 

 the barn a space is partitioned off for another feed 

 bin for use on that side. 



HOSPITAL STALLS 



Every barn should have two or more hospital 

 stalls. In a herd of twenty-five cows there should 

 not be less than three, each at least 9x12 feet. 

 They are for use of cows expected to come fresh. 

 When not needed for these purposes, they may be 



