298 THE HOUSE FLY— DISEASE CARRIER 



inches wide, and 8 feet 5 inches long; these are nailed 

 next to the sides. (Fig. 38.) 



Roof. — The roof may now be finished. This re- 

 quires five boards (/), measuring (when cut to fit) 

 I inch thick, 12 inches wide, and 6 feet long. They 

 are so placed that they extend 8 inches beyond the front. 

 The joints (cracks) are to be broken (covered) by 

 laths one-half inch thick, 3 inches broad, and 6 feet 

 long. (Fig. 39.) 



Box. — The front of the box may be made with 

 two boards, i inch thick, 3 feet 10 inches long. One 

 may measure 12 inches wide, the other 5 inches wide. 

 These are nailed in place, so that the back of the 

 boards is 18 inches from the inside of the back- 

 boards. The seat of the box may be made with two 

 boards, i inch thick, 3 feet 10 inches long; one 

 may measure 12 inches wide, the other 7 inches 

 wide. One must be jogged (cut out) to fit around the 

 back corner posts (F). An oblong hole, 10 inches 

 long and 7^ inches wide, is cut in the seat. The edge 

 should be smoothly rounded or beveled. An extra 

 (removable) seat for children may be made by cutting 

 a board i inch thick, 15 inches wide, and 20 inches 

 long; in this seat a hole is cut, measuring 7 inches long 

 by 6 inches wide; the front margin of this hole should 

 be about 3 inches from the front edge of the board; 

 to prevent warping, a cross cleat is nailed on top near 

 or at each end of the board. 



A cover {K) to the seat should measure 1 inch thick 

 by 15 inches wide by 20 inches long; it is cleated on 



