74 Dairy Bacteriology. 



it will destroy most forms of life. In many cases it is 

 inapplicable on account of its odor. 



Corrosive sublimate (HgCl 2 ) for most purposes is a 

 good disinfectant, but it is such an intense poison that its 

 use is dangerous in places that are at all accessible to stock. 



For the disinfection of walls in stables and barns, com- 

 mon thin whitewash (CaOH) if made from freshly burned 

 quicklime is admirably adapted. It possesses strong 

 germicidal powers, increases the amount of light in the 

 barn, is a good absorbent of odors, and is exceedingly 

 cheap. 



Carbolic acid, creosote, and such products, while excel- 

 lent disinfectants, cannot well be used in factories on ac- 

 count of their odor. 



For gutters, drains, and waste-pipes in factories, vitriol 

 salts (sulfates of copper, iron, and zinc) are often used 

 These are deodorants as well as mild disinfectants. 



