Laboratory Exercises 375 
square, deep breast, larger size and more sluggish attitude of the 
meat fowl. 
45. Makinc MATERIALS FOR KILLING CHICKEN LicE 
Object. The preparation of a powder and a liquid for killing 
lice and mites. 
Materials. One-fourth pint crude carbolic acid, three-fourths 
pint gasoline, and two and one-half pounds of plaster of paris or 
a multiple of these amounts, also one pint crude carbolic acid and 
three pints kerosene or a multiple quantity. One pan, one pail, 
mixing ladle, one mosquito mesh wire screen. 
Directions. For the powder, mix the carbolic acid and gasoline 
together thoroughly. Sprinkle this mixture on the plaster of 
paris and stir until the whole become a homogeneous pinkish 
brown mixture. Spread out thin on paper until dry, screen and 
make fluffy, then box it for future use. 
For the liquid lice killer, mix the crude carbolic acid with the 
kerosene in the formula of 1 to 3. Apply as soon as possible, pref- 
erably in the form of a fine spray. 
46. KiuuiInc CHICKEN LIcE 
Object. To apply lice powders and liquid lice killers. 
Materials. Access to a poultry house and flock. A good supply 
of both the lice powder and the liquid lice killer ; a foot pump and 
pail or hand force pump ; a large box with door at one end and at 
top; shovel; and several empty baking powder cans. 
Directions. Quietly drive the fowls into the box, preferably by 
putting the open door of the box on the outside of the house just 
in front of the exit. Clean off the nests and droppings boards, 
and if the pen be badly infested, remove the litter. Thoroughly 
spray the roosts, droppings platform, nests, and wall near the roosts 
with the liquid. Take care to force the liquid into all crevices and 
cracks. 
