'70 PRINCIPLES OF VETERINARY SURGERY 



tend to show tliat the so-called hotryomyces are no specific 

 Lacteria, but an aggregation of staphylococci. 



What bacieria are mainly responsible for the production of 

 abscesses in cattle ? 

 According to Lncet and Nocard, streptococcus pyogenes 

 bovis, staphylococcus pyogenes bovis, bacillus pyogenes 

 bovis, bacillus liquefaciens bovis, bacillus crassus pyogenes 

 bovis. 



What forms of abscesses are recognised ? 



Acute, cold or chronic, circumscribed, diffused, gravita- 

 tive, tympanitic, metastatic or pysemic, superficial, deep, 

 intermuscular, subfacial, etc. 



What do you understand by an acute abscess ? 



One following an acute purulent inflammation. 



What do you understand by a cold abscess f 



An abscess the result of a chronic purulent inflammation. 



What do you understand by a circumscribed, what by a 

 diffused abscess ? 



A circumscribed one is limited by a wall of granulation 

 tissue ; a diffused one is usually more extensive and not 

 limited by a wall of embryonic tissue. 



What is a gravitative abscess 9 



Abscesses point toward the point of least resistance; 

 therefore, depending on the nature of the tissues, the pus, 

 trying to get out, wanders, appearing at some distant spot 

 from its point of formation. 



What is a tympanitic abscess 9 



One containing gases of putrefaction. 



