Il8 PRACTICAL DAIRY BACTERIOLOGY 



webs and hay that may be clinging to the ceilings of the barn, 

 for all such are traps for accumulating dirt, as well as sources 

 of bacteria, thus aiding in contaminating the milk. Plastered 

 or sheathed walls and ceilings are very much to be preferred 

 to a rough finish. The bedding of the cattle is a matter of some 

 importance also, and clean shavings appear on the whole the 

 best for this purpose. They serve better than straw or hay, 



FIG. 45 COLONIES FIG. 46 COLONIES 



Developing from bacteria falling upon Developing from bacteria falling upon 



a plate exposed during milking in a a plate exposed during milking in a 



poorly-kept barn (Fraser) well-kept barn (Eraser) 



inasmuch as they give rise to less dust and dirt and are not so 

 liable to be a source of bacteria contamination for the milk. 

 A coat of whitewash should be applied with a spray pump at 

 least once a year. It helps to disinfect and makes the stable 

 light and clean. Flushing with water should be frequent. 

 (Figs. 45 and 46.) 



DAIRY PERSONNEL 



There has been a strong tendency in recent years to give 

 much greater attention to the habits of the persons employed 

 on a dairy farm. It is not uncommon to find them dressed in 



