SHELTER FOR SWINE 265 



against the upper side of the blocks d, f, e, g, and butt 

 against c. This may easily be accomplished by raising 

 the farther side of the table a little so that the boards will 

 keep their position against the blocks. The table should 

 also be inclined a little toward c. The crossbars which 

 have been sawed 40 inches long are now nailed one across 

 each end and one at the middle as shown in the illustra- 

 tion. These are to be six inches wide and only on one 

 side of the panel and nailed with 8d wire nails which 

 should be clinched. The two end crossbars can rest 

 against the ends of the blocks f, e and g, with their sides 

 and against d with their ends. Saw out one inch deep 

 from the upper edge of each end of the lower board out- 

 side of the cross-bar. This will make a fence that is forty 

 inches high when the lower board rests on the ground. 

 By following the method here outlined the panels will all 

 be of the same dimension and will thus fit the triangles 

 without difficuty. 



To construct the triangle represented in B and B' and 

 used to support the panel, saw three pieces of board six 

 inches wide and four feet long. Nail a one-inch board at 

 the front side of the table for a straight edge and use this 

 as the base line. Take a point 1 on the base line and 21 

 inches each side of this point, the points m and m'. Take 

 a point o so that it is 27 l / 2 inches above 1, and at right 

 angles to the base line at 1. Now take two of the boards 

 four feet long and lay the lower and inside corners at m 

 and m', and allow the inside of the two boards to cross 

 at the point o. Nail the boards lightly in this position, 

 and lay out r and s which are notches sawed out for the 

 ends of the boards of the panel to fit into. These notches 

 are 2^2 inches wide and the upper end of r is 2S T /2 inches 

 from the base line. The lower end of notch s is 7*/2 



