34 MASTITIS OF THE COW 



A. Local conditions. 



Primary lesion. 



Inflammation. 



Sequestration and necrosis. 



Sloughing, softening, encapsulation. 



The milk. 



Complication with saprophytic invasion. 



B. General conditions. 



Blood-infection. 

 Intoxication. 

 Termination. 

 2. Stroma-infection of a chronic character. 



Ports of infection : teat canal, wound or blood. 

 Transportation of infectious organisms by leuco- 

 cytes. 



A. Local conditions. 



Primary lesion. 



Inflammation. 



Distribution of progressive necrosis by the 



leucocytes. 

 Secondary milk-infection, fistula formation. 

 Milk. 



Complication with saprophytic invasion. 

 Causes of its infrequent occurrence. 



B. General conditions. 



AA. Blood-infection. 

 BB. Intoxication. 



Chronic septic-intoxication. 



Septic-putrid intoxication. 



Termination : progressive destruction 

 of the udder. 



The milk-infection and stroma-infection apparently originate 

 together very infrequently, however, as in an acute wound infection. 



As a rule they are very sharply separated originally, but may 

 later complicate each other. 



Milk-infection often becomes complicated with the stroma- 

 infection, which as a rule is less distinct, but as in nodular necrosis 



