296 THE HOUSE FLY—DISEASE CARRIER 
First lay down the sills marked A and join them 
with the joist marked B; then nail in position the two 
joists marked C, with their ends 3 inches from the 
outer edge of A; raise the corner posts ( D and F), 
spiking them at bottom to A and C, and joining them 
with L, In, G, and K; raise door posts E, fastening 
them at J, and then spike I x in position; H is fastened 
to K. (Fig. 37.) 
Sides. —Each side requires four boards (a) 12 inches 
wide by 1 inch thick and 8 feet 6 inches long; these are 
nailed to K, L, and A. (Fig. 37.) The corner boards 
are notched at G, allowing them to pass to bottom or 
roof; draw a slant from front to back at G-G, on the 
outside of the boards, and saw the four side boards 
to correspond with this slant. (Fig. 39.) 
Back. —The back requires two boards (b) 12 inches 
wide by 1 inch thick and 6 feet 11 inches long, and two 
boards 12 inches wide by 1 inch thick and 6 feet 5 
inches long. The two longest boards (6) are nailed 
next to the sides; the shorter boards are each sawed in 
two so that one piece (c 1 ) measures 4 feet 6 inches, 
the other (c 2 ) 1 foot 11 inches; the longer portion 
(c 1 ) is nailed in position above the seat; the shorter 
portion (c 2 ) is utilized in making the back door. 
Floor. —The floor requires four boards ( d ) which 
(when cut to fit) measure 1 inch thick, 12 inches wide, 
and 3 feet 10 inches long. (Fig. 38.) 
Front. —The front boards may next be nailed on. 
The front requires (aside from the door) two boards 
( E ) which (when cut to fit) measure 1 inch thick, 9 
