568 DISINFECTION 



3. Chlori7iated lime. Five ounces of chloride of lime to a 

 gallon of water (4 per cent). This should be applied in the 

 same way as the corrosive sublimate. 



4. A niixiure of crude carbolic and sulphuric acid. The 

 following disinfectant has been found to be very serviceable. 

 It is not poisonous, but quite corrosive, and care should be 

 taken to protect the eyes and hands from accidental splashing : 



Gallon. 

 Crude carbolic acid y^ 



Crude sulphuric acid y^ 



These two substances should be mixed in tubs or glass 

 vessels. The sulphuric acid is very slowly added to the car- 

 bolic acid. During the mixing a large amount of heat is de- 

 veloped. The disinfecting power of the mixture is heightened 

 if the amount of heat is kept down by placing the tub or glass 

 demijohn containing the carbolic acid in cold water while the 

 sulphuric acid is being added. The resulting mixture is added 

 to water in the ratio of i to 20. One gallon of mixed acids 

 will thus furnish 20 gallons of a strong disinfecting solution, 

 having a slightly milky appearance. 



5. Formalin. Formalin is being highly recommended as 

 a disinfectant when used in a 5 per cent solution. The floors 

 and walls should be thoroughly wet with it. 



6. Ordijiary slaked lime. Although it does not possess 

 the disinfecting power of the substances given above, slaked 

 lime is nevertheless very useful. It is well adapted for disin- 

 fecting the surface of yards and pens. It is very good to apply 

 to the ceilings and walls of stables. 



There are a number of other substances that may be used, 

 such as a solution of blue vitriol or creolin. 



In disinfecting stables and pens all litter which has accu- 

 mulated should be removed before applying the disinfectant. 

 As the litter itself is infected it should be disinfected as well as 

 the stable floor and walls. The most efficient method for 

 disinfecting the litter is fire. The practice of washing the 

 floors and ceiling with water before applying the disinfectant 



