PROPER VENTILATION 131 



is not properly ventilated. Any odor is sufficient 

 evidence that the house is not properly aired. 



Drafts are just as injurious to the health of the 

 fllock as improper ventilation is and must be care- 

 fully guarded against. Drafts can be avoided by 

 having all openings on the end of the house, pre- 

 ferably the south end. Have the north and west 

 ends or sides built as tightly as possible and v^ell 

 protected from the winds. 



A glass front house causes extremes in tempera- 

 ture, warming up in the day time and then turning 

 cold with the setting of the sun. This is also apt 

 to cause disease and make the fowls' combs and 

 wattles more sensitive to frosts. The open muslin 

 front is by far the best and at the same time the 

 least expensive. Some glass may be used, but not 

 exclusively. 



Poultry to be healthy must have plenty of fresh 

 air. They must breathe this fresh air all the time, 

 at night as well as during the day. The carbon 

 dioxide gases are expelled by the fowls in the pro- 

 cess of breathing, and these should not again be 

 inhaled, but pure fresh oxygen should go into their 

 lungs, if we expect our poultry to be healthy and 

 vigorous. Many of the flocks which have a ten- 

 dency to be delicate, are kept in houses not supplied 

 with the proper amount of fresh air. 



In supplying the hens with this necessary fresh 

 air there is no necessity to expose them to draughts. 



