PORTABLE LAYING HOUSE 139 



left entirely open two feet above the ground. The opening is 

 covered with small-mesh poultry netting, no curtains being pro- 

 vided for it. The nests and perches are in the back part of the 

 main house, and are protected and separated from the open front 

 by a solid board partition extending from the lower part of the 

 windows to within two feet of the floor. The windows in the peak 

 are equipped with transom sash, so that they may be opened, 

 being hinged at the top and opening outward. 



List of Materials. — The following is a list of material required 

 for the half-monitor house complete, 20 x 40 feet: 



Foundation, concrete wall as deep as necessary and 8 inches wide — 22 bags 

 cement, 2 cubic yards gravel, 4 cubic yards cinders. 



Sills 12 ps. 2" X 6" X 20' 



4 ps. 2" X 6" X 12' 

 4 ps. 2" X 6" X 8' 



Corner and division posts (doubled) 16 ps. 2" x 4" x 5' 



8 ps. 2" X 4" x 9' 

 End wall and division studs 6 ps. 2" x 4" x 6' 



12 ps. 2" X 4" X 8' 

 Side wall studs and long partition 28 ps. 2" x 4" x 5' 



9 ps. 2" X 4" x 9' 



Plates 8 ps. 2" X 4" X 2C 



Girder, sill under windows 2 ps. 2" x 4" x 20' 



Rafters 21 ps. 2" x 4" x 14' 



21 ps. 2" X 4" X 10' 



Extra pieces for window work, dropping boards, etc 10 ps. 2" x 4" x 12' 



Supports for dropping boards 12 ps. 2" x 4" x 10' 



Perches 16 ps. 2" x 2" x 10' 



Partitions, nests, and dropping boards 720 sq. ft. ship-lap. 



Roof 1,000 sq. ft. ship-lap. 



Roofing paper 1,000 sq. ft. 



Sash 12, 34" X 34' 



Trimmings dressed white pine 50 linear ft. 1" x 2' 



150 linear ft. I"x3' 

 80 linear ft. 1" x 4 



120 linear ft. 1" x 6' 



This material will cost approximately $219.50. The house of 

 forty linear feet will cost $5.48 per running foot; or $0.27 per sq. ft. 

 for the total area of 800 sq. ft. The cost per bird, allowing 4 sq. ft. 

 each, is $1.08, not including labor. 



Portable Lajring House.* — This house has two curtain openings 

 and one large window in front (Figs. 92a and 926). These provide 

 ample sunlight and ventilation. The openings for the curtains are 



* After Iowa Bulletin No. 132 by Davidson and Lippincott. 



