HOUSING OF POULTRY 



177 



that type of ventilation which is found in houses that have 

 more warmth but less pure air. 



Curtain-front House. The curtain-front house has also 

 been used successfully in cold climates. Instead of leaving 

 the front of the house open at all seasons adjustable cur- 

 tains of muslin or burlap are used. They are closed at 

 night as necessary during the winter. The objections to 

 the adjustable curtain are, first, that it may not admit 

 enough air, and second that it requires nightly attention 



OREGON STATION'S FIRST OPEN-FRONT COLONY HOUSE 



in cold weather to adjust it. There is the further disad- 

 vantage that it may be closed or open when it should be 

 the reverse, as the temperature or weather conditions in 

 the evening do not always indicate what they may be 

 before morning. In other words, it may be necessary to 

 close the curtain in the evening but not necessary toward 

 'the morning, or the reverse. It will be better in cold 

 climates to keep the curtain closed continuously during 

 cold weather. "When this is done there should be win- 

 dows in the house to admit light and sunshine. 



