26 SQUABS FOR PROFIT 



the pens so as to give proper ventilation for each two 

 sections. One of these windows is shown in Fig. 12, 

 section B, at "i". All the windows are made so as to 

 slide easily and are covered with wire netting on the 

 outside. 



In each inside partition, near the gable, is a two-foot 

 opening covered with wire netting as shown at "a", in 

 Fig. 13. These openings are above the nests as indi- 

 cated, and permit a free circulation of air through the 

 various sections. As an additional means of ventila- 

 tion, some breeders erect cupolas with slatted sides in 

 the center of each house. There is no possible objec- 

 tion to their use, except that they slightly increase 

 the cost of the building. We have not found them 

 necessary in our houses. We would, however, advise 

 their use in houses longer than 40 feet. 



Doors. — Strong, wooden doors, under lock and key, 

 are provided at either end of the alleyway leading 

 outside. These doors swing outward. They are 

 also provided on the inside with self-closing doors 

 covered with wire netting, as shown in Fig. 9. The 

 doors leading into the sections or pens are covered 

 with wire netting, as well as those leading into the 

 yard or fly, as shown at "b v , Fig. 13. All doors are 

 supplied with strong hinges, such as are used on screen 

 doors and are self-closing. This feature is of special 

 value as it effectually prevents the escape of birds 

 from carelessness in leaving doors open when one 

 enters or leaves the building or yard. 



Materials and construction. — Three rows of brick, 

 stone or concrete piers 12 to 18 inches high serve as a 

 foundation for the buildings. The 3 x 4-inch sills rest 

 upon these as shown at "h", "i", "j" in Fig. 11. The 

 2 x 4-inch joists are laid 2 feet apart on these sills. 



