As the construction of this building has been already noticed, I will proceed to describe its interior arrangement for a brooding-house. In the first place, as in the breeding-house, there should be a walk three feet wide the entire length of the building on the back side. Next to the walk, and parallel with it, the brooder box should run. This box will be thirty inches wide, and like the walk, the entire length of the building. In my building the brooding arrangement is very simple, being a box with two sides resting on the ground, eight inches high in the clear, the ground being utilized as the bottom of brooder. This brooding-box consists of two parts. The sides, seven inches wide, are nailed securely, and constitute the sides of the pipe-stand. The cover is portable, with cleats nailed across the top to strengthen it, and with strips an inch wide nailed underneath, in front and in back, to keep it in position. These strips are supposed to rest on the seven-inch strips in the sides, and, when the cover is on, make a tight brooder. Figure 13 represents the interior of brooding-house, with these covers on the brooders and ready for use. Also, with two of the covers removed showing the heating pipes. These consist of a two-inch flow and return, running parallel with each other the entire length of the building, and lying ten inches apart from centre to centre. These pipes rest upon cross boards, whose length corresponds with the width of the brooder, and to which the sides are nailed; two-inch holes are cut out in the top of these boards into which the pipes are laid, the upper surface of which comes flush with the top of the boards, so that when the cover of brooders is in position it rests equally on pipes and boards. [Illustration: _PLAN OF BROODING HOUSE._ (FIG. 13.)] The distance between these boards corresponds with the width of pens outside of brooder, and constitute partitions for the same. The partitions are simply inch boards, twelve or fourteen inches wide, fitting into ground in front of building to keep them upright and in position. The front of the brooder leading into the pens is cut out in centre of brooder four feet long and four inches deep to allow the free passage of the ducklings. These openings in the first four pens are fringed with woolen cloth, cut up every four inches, to keep the brooder warmer in cold weather. The remaining brooders are not fringed, for reasons which will appear hereafter. The heater can be located in the end of building most convenient to the operator.