alin and 2v3 ounces of potassium permanganate for every 1000 

 cubic feet of space to be disinfected. 



For disinfecting with formaldehyde gas the temperature should 

 be at least 50° Fahrenheit, preferably above. Remove birds from 

 the house and close tightly all windows and yard openings, seal- 

 ing cracks with strips of paper or cotton. Open all closets, cup- 

 boards, drawers or bins which are to be disinfected. Weigh out 

 the required amounts of formalin and potassium permanganate 

 in separate dishes. Scatter the permanganate crystals in the 

 deep dishpan and place pan on the large piece of sheet iron on 

 the floor of the room to be disinfected. Since much heat is 

 evolved in the leaction of the formalin and permanganate all 

 combustible materials should be removed from the vicinity of the 

 pan. Place a kettle of boiling water in the room to give a moist 

 atmosphere. Pour the formalin quickly over the potassium per- 

 manganate crystals in the pan, leave the room at once, and shut 

 and seal the door tightly. Allow the house to remain closed 

 6-12 hours, allowing 12 hours whenever it is desired to disinfect 

 materials into which the gas must penetrate (fabrics or hay.) 

 At the end of 6-12 hours open the house and air thoroughly. 



TO DISINFECT HOUSES, ROOSTS, NESTS, INCUBATORS, 

 BROODERS, ETC., WITH LIQUID DISINFECTANTS. 



Formaldehyde. As an affective disinfectant a solution of forma- 

 lin and water may be employed. Add 1-2 pint of commercial 

 formalin to each gallon of water used, and with a pressure spray 

 pump or a brush apply the mixture to the areas to be disinfected. 

 Because of the irritating vapor all doors and windows should 

 be open. The worker should protect his hands by wearing oiled 

 leather or rubber gloves. Apply the disinfectant twice, allowing 

 houses, roosts, etc., to dry between applications. 



Compound Cresol Solution. A highly recommended coal-tar 

 disinfectant is found in compound cresol solution, a mixture of 

 cresol and linseed-oil-potash soap. Such a mixture is necessary 

 as cresol alone does not mix with water readily This compound 

 may be purchased under the name of liquor cresolis compositus, 

 U. S. P., or it may be made according to the following directions 

 taken from "Diseases of Poultry," by Pearl, Surface and Curtis. 



"Commercial cresol" can be obtained from a druggist. Do not 

 allow this cresol to come in contact with the skin as it is corrosive. 



