TWO-THIRDS SPAN LAYING HOUSE 137 
house. On both sides are muslin frames 3 x 5 feet, which being four 
feet from the floor do not permit drafts on the birds when open. 
One is opened every day during the winter, but closed at night. 
Floor Plan. 
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Cross Section. 
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Front View. 
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Fig. 91a.—Half-monitor type of laying house: Working plans. 
The house is lined on all sides and above. This would not be 
advisable in a commercial house. 
The roosts are also set on 2 x 4 inch pieces in the form of a 
