32 CIRCULAR NO. 14 



the air when heated by the fowl's body does not readily pass 

 up and out of the house. 



The semi-monitor is the tall narrow shed roof with a small 

 shed roof, or lean-to, built in front for scratching shed. It 

 cannot be used for long houses because all material going in 

 or out in cleaning must come through the end, as the sides 

 are too low to permit a door to be placed in them. The mon- 

 itor roof is too complicated in construction for poultry houses. 

 It is too high and allows too much heat to escape, and is, there- 

 fore, little used under climatic conditions similar to those found 

 in Utah. 



