4IO MANAGEMENT AND BREEDING OF HORSES 



order to take advantage of the wind, regardless of the 

 direction from which it blows. In this way a large quan- 

 tity of air is admitted and evenly distributed throughout 

 the stable. A convenient size for these inlets is 4 x 12 

 inches, as this permits them to be built between two four- 

 inch studding. They should begin near the ground on 

 the outside and end near the ceiling on the inside. 



The outlets must be so constructed as to, meet three 

 conditions : First, they should remove the stable air from 

 near the stable floor. The refuse gases are heavier than 

 the other air of the stable and remain near the floor, as 

 does the colder air. Second, they should be provided with 

 openings near the ceiling, which can be closed at will, for 

 the removal of the warm air when the stable becomes too 

 warm, particularly in the summer. Third, it is important 

 that these ventilators be so arranged as to afford as little 

 inconvenience as possible, particularly when they extend 

 through the hay loft, where they are sometimes in the 

 way of the hay fork. These outlets should be as large 

 as convenient. The essentials of a good ventilating flue 

 are similar to a good chimney. 



Ventilating shafts are expensive, particularly if con- 

 structed so as to work properly, for which reason 

 windows are more commonly used for ventilating the 

 horse barn. The windows can be so arranged as to form 

 a good system of .ventilation. When so used they should 

 be hinged near the center, allowing the top to open in- 

 ward. This is important, for if the bottoms open into 

 the stable, the windows are likely to be broken by the 

 animals running against them. By opening windows so 

 arranged a good circulation of air is provided. (Fig. 180.) 



Light. — Sunlight is nature's disinfectant. With suf- 

 ficient light and proper ventilation, germ disease is not 

 likely to occur. Window glass is inexpensive and should 

 be abundantly supplied in the construction of the barn. 

 Best results are obtained by cutting the windows long 

 from top to bottom and by having them extend low, as 



