30 



there is a day so cool that it is thought best to keep the house shut up, 

 no serious bad results develop. But when there are several days of con- 

 tinued cold weather, with the houses shut all the time, conditions inside 

 the houses begin to be bad ; and if — as sometimes happens — cold and 



v» 



rr 



u.\ 



o M ? « S 2 

 S o o S 



cS-g-CO -go 





'- ° ° ff 



stormy weather is prolonged for a week or more, conditions in the poul- 

 try house become very bad, the walls and under side of the roof drip 

 with moisture, and the air becomes bad. Under such conditions roup 

 often develops and becomes epidemic; or, where no virulent disease 

 appears, the fowls are catarrhal, debilitated and unproductive. 



