454
��Po'pular Science Monthly
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��Elevation of the house showing the construction and location of the brick piers beneath the ends of the ^partitions between each of the pens where they support the ends of the sills
��pair having two nests adjoining. Be- tween each pair of double nests there is an upright. This keeps the cock birds from fighting. A glance at the plan and then at the section will show the good features of the double nests. In placing the nests as shown there is no draft across any nest box — a decided ad- vantage. This pen with its arrangement of nests will easily accommodate 50 pairs of breeders.
Under the bottom row of nests should
��be placed a crate containing plenty of nesting material. This is an absolute necessity and must not be overlooked. Beneath the house and at the back of the fly is placed a frame made of 2-in. square material on which is stretched a 2-in. wire mesh. These frames fit in between the brick piers.
The fly pens are constructed of studs, which form the uprights. Around the base of the pens is placed a board 8 in. wide. The tops of the uprights are
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��Plan of the pens and flies with" dimensions and a sectional view showing the location of the doors and the running boards, one of which is provided on each side of each pen
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