430 Bacteria in Relation to Country Life 



ough cleanliness. When objectionable bacteria, molds, 

 or yeasts, have invaded the premises, it may become 

 necessary, therefore, to resort to sterilization of the 

 utensils and disinfection of the rooms. Again, certain 

 faults occurring in the output of the cheese factory 

 may not be due to microorganisms, but to faulty manipu- 

 lation. An instance of this is found in the manufacture 

 of soft cheeses, when some of the products become too 

 dry on account of the lack of sufficient moisture in the 

 atmosphere of the drying room. 



