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( UNIVERSITY 1 



Windows and Ventilators ^J 109 



made of thin matched lumber nailed together so 

 as to make a solid shutter. This shade or shut- 

 ter may be hinged to the side of the poultry 

 house just above the window with loose hinges, 

 the lower edge supported by a wire, as shown in 

 Fig. 37. Such shades exclude the sun and serve 

 as a protection from the heat during the warm- 

 est part of the year when the windows are left 

 open. The loose hinges permit of easy removal 

 for winter storage. 



Ventilation. During the warm weather the 

 open windows will afford sufficient ventilation, 

 but during the colder months some means of ven- 

 tilating the building should be provided, aside 

 from that afforded by the doors and windows. 

 Many ventilators have been planned for poultry 

 houses, but all ventilators that are in continu- 

 ous operation either give too much ventilation 

 during the coldest weather or not enough during 

 the warm, still days. As a rule, they furnish 

 too much ventilation during the cold nights, 

 and not enough during the sunny part of the 

 day. Any system of ventilation that will fully 

 meet the requirements of the busy farmer or 

 poultryman must be simple and readily con- 

 trolled by the attendant. Ventilators are not 

 needed in the severest weather, but during the 

 warm days of spring and whenever the tempera- 

 ture is above the freezing point during the winter 



