376 Animal Husbandry 
If the house is badly infested, also spray the floor and entire 
wall area. Drive several nail holes into the top of the baking 
powder can and use it to shake the powder into the feathers. 
Thoroughly dust each fowl with the powder. One student should 
hold the fowl head downward and legs spread apart while another 
shakes the powder into the feathers, and with his free hand works 
it into the skin. 
Every fowl should be treated. In order to kill the lice or mites 
which hatch out after the first application, a second should be made 
10 days later. 
47. Pouttry Hovusss 
Object. To make a working drawing of a poultry house for lay- 
ing fowls. ; 
Materials. Drawing paper; drawing board; scale rule; com- 
passes; hard pencil. 
Directions. Make a working drawing (showing only the impor- 
tant details) of a poultry house. 
1. Cross-section view showing roosts, nests, wall, and floor 
construction and dimensions. 
2. Front view showing windows, etc., and dimensions. 
3. Ground plan showing interior arrangement. 
4. Estimate square feet of floor space, cubic feet of air space, 
number of square feet of floor to each square foot of glass area, 
number of square feet ‘of floor to each square foot of cloth area 
(p. 340). 
48. Coop ror Hen wiry CHICKS 
Object. To make a box coop with covered run for hens with 
chicks. 
Materials. Hammer, nails, saw, square, one box at least 2 feet 
on-each side and 18 inches deep, extra matched lumber and small 
pieces to use as cleats, wire or lath for the covered run. 
Directions. Remove the top of the box. Saw diagonally through 
