INFECTIOUS MASTITIS IN GENERAL 35 



may become more discernible. Chronic stroma-infection, like- 

 wise, becomes complicated with a milk-infection which is indistinct 

 at first but later becomes very severe and pronounced. 



The acute primary stroma-infection due to external udder- 

 wounds, however, runs its course without complication, if it does 

 not pass into a milk-infection in the beginning. 



The primary milk-infection is the most common, next comes the 

 chronic stroma-infection. The primary acute stroma-infection is 

 comparatively uncommon because of the important port of infec- 

 tion, the udder-wound. 



