POST-MORTEM REPORT 149 



firm, necrotic body of irregularly rounded shape and with 

 uneven, ragged external surface. The body was of firm 

 but friable consistency. In the cisterns and the milk-ducts 

 yellow fibrin and viscid croupous membranes were observed. 

 Other parts of the udder manifested no alterations. 



A great number of small Gram positive cocci grouped 

 in twos or short chains, for instance, streptococci, were 

 observed in the fibrin and the necrotic tissue. The diag- 

 nosis was corroborated by cultures. 



3. Atypical chronic streptomycosis in the right anterior 

 quarter, together with a typical chronic streptomycosis in 

 both posterior quarters. 



The right anterior quarter of the udder was slightly 

 changed, disproportionate and hard. Both posterior quar- 

 ters were decreased in size, but still thick and somewhat 

 firm. 



Right anterior quarter : The incision was somewhat dry. 

 The cut surface was even, grayish-white and firm. The 

 lobuli were small and presented no milk points. Yellow 

 fibrin cylinders were expressed. Groups of grayish-white, 

 convex, soft and elastic unaltered lobuli showing milk 

 points were present here and there. Firm yellow fibrin 

 was observed in the milk-ducts and the cisterns. 



Both posterior quarters presented the same lesions. 

 The incision was succulent and the liquid of the incision 

 consisted of a yellow, cream-like pus. The cut surface 

 was even, grayish-white and tendinous. The lobuli were 

 small and presented no milk points. Yellow cream-like 

 pus was found in the milk-ducts and the cisterns. No lesions 

 were found in the other parts of the udder. 



In the fibrin of the right anterior quarter a great number 

 of Gram positive cocci arranged in twos or short chains were 

 present ( streptococci ) . 



In the pus of both posterior quarters a great number 



