DISENFECTION 375 



4, Ordinary slaked lime, though it does not possess the 

 disinfecting power of the substances given above, is neverthe- 

 less very useful, and should be used more particularly on in- 

 fected soil. 



More recently the thorough sprinkling of the floors, walls, 

 and ceilings with Formalin has been highly recommended. 



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 eflicient method for this 

 is fire. The practice of washing the floors and ceiling with 

 water before applying the disinfectant has in most instances 

 the disadvantage that the water carries the microorganisms to 

 be destroyed into cracks and possibly through the floor where 

 they will not be affected by the later application of the germi- 

 cide. It is deemed safer, to simply use a dry cleaning in 

 which the sweepings are burned and then apply the disinfect- 

 ant in sufficient quantities to thoroughly saturate the surfaces 

 including the adhering particles of dirt. The solutions avail- 

 able for stable disinfection are cheap enough to admit of this 

 precaution. 



It is often desirable to disinfect yards where infected 

 animals have been kept. It is well in such cases to carefully 

 scrape together and burn the litter after which the surface of 

 the soil must be disinfected. For this the milk of lime or a 

 a very liberal coating of slacked lime has been recommended. 

 The burning of the surface as can be done by covering it with 

 a layer of old straw and burning, is a more certain destroyer, 

 especially if animal parasites are to be eliminated. The method 

 of disinfecting with a flame as described by Ferbusch in 1896 

 and recently recommended by Stiles for disinfecting kennels, 

 pens and yards offers possibilities not found in other means. 

 The procedure consists of a "Cyclone burner" attached to the 

 end of a long iron tube with a wooden shield. This is con- 

 nected with a short piece of hose of the kind made for the 

 delivering of oil attached to a spray pump. A tank of suitable 

 size is taken and paraffin gas oil is used-. The spray of oil is 

 ignited giving a very hot and effective flame which is run over 



