in Chap. 21, in which case the turned back edge should be next to the frame to save caretaker's sleeves from any sharp edges. Now, nail the rear ends of the sides to the back. Next, lightly nail two temporary holding strips across the front of pens, one near top and one near bottom, so that pens are of equal width. These strips will be removed just before making the doors. Now, the 10x21 hdw. cl. floor section may be installed. It is strictly optional whether it laps down 1⁄2 inch on the door sill (D.S.) as shown In Illus. 14, or whether it stops at the front edge of the door sill. Install the board floor so as to leave a self-cleaning area 61⁄2 to 7 Inches, as shown in Illus. 13. It may save possible splitting of side frames if a board of the same length as the 1x2 pillar (Pil.) is held beneath the point where each nail is driven while nailing the floor boards to the side frames. The shock of the hammer blows will thus be absorbed by this small piece of board rather than the side frames. No. 5 double pointed tacks will secure the rear end of the hdw. cl. to the wood floor. Nail the door sill (D.S.) in place.
illu13
The removable top 1x21x23 is made up of two or more boards 21 inches long running crosswise on the pens. The boards are held together by use of Top Strips (P.S.) as shown in Illus. 32, Chap. 23. One top strip to fit just in from each side (S). Some may prefer to add another top strip along one side of the
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