POST-MORTEM REPORT 151 



Both left quarters manifested the same lesions, although 

 the lesions in the anterior quarter were more advanced than 

 those in the posterior quarter. The incision was succulent 

 and the juice consisted of a thin red fluid. The cut surface 

 was even, uniformly red stained, and of firm but friable 

 consistency. The structure was indistinct. No milk 

 points were present. Red juice was expressed. Here and 

 there poorly defined grayish-green areas the size of a nut 

 were observed, which had a soft elastic consistency and 

 crepitated when incised (emphysema). Small excised 

 pieces floated in water. These parts presented a putre- 

 factive odor. The milk-ducts and the cisterns contained 

 grayish-red firm but friable fibrin cylinders; the subcutis 

 over the diseased anterior quarter was swollen, red and of 

 a gelatinous consistency. A red fluid was expressed. The 

 connective tissue of the teat of this quarter showed the same 

 lesion (oedema). No lesions were seen in the other parts 

 of the udder. 



The fibrin contained a great number of Gram positive 

 cocci arranged in irregular bunches (staphylococci). The 

 diagnosis was corroborated by culture. 



In the green parts large Gram positive spore-bearing 

 bacilli were seen (putrefactive bacilli). 



C. COLIBACILLOSIS 



1. Colihacillosis in the right posterior quarter. 



Only the right posterior quarter was slightly swollen, 

 and its consistency somewhat firm. 



The incision at this point was succulent and the juice 

 consisted of yellow flocculent milk. In the lower part of 

 the cut surface was even, yellowish-gray and somewhat firm. 

 The lobuli showed no milk points and yellow fibrin cylinders 

 were expressed. In the posterior part a somewhat sharply 

 circumscribed area was present which was red stained, of 



