122 Farm Poultry 



warm pure air is desired. The greatest vigor cannot 

 be secured if the fowls are required to breathe 

 impure air. Neither can greatest production be 

 obtained if the fowls are uncomfortable on account 

 of the low temperature. For prolificacy the spring- 

 time conditions in central northern United States 

 are without doubt the nearest ideal, a moderately 

 warm temperature, pure fresh air, plenty of exer- 

 cise with fresh vegetable, grain and animal food. 



