348 PRINCIPLES OF VETERINARY SURGERY 



pure culture of a certain micro-organism. Ogston, since 

 1881, has found micro-organisms in all of 74 abscesses ex- 

 amined. 



In abscesses of the domestic animals, the same pyogenic 

 micro-organisms are found as in the human species. These 

 are : 



Staphylococcus pyogenes albus 



Staphylococcus pyogenes aureus 



Staphylococcus pyogenes citreus 



Staphylococcus pyogenes flavus 



Streptococcus pyogenes 



Streptococcus of strangles 



Bacillus Pyogenes Fetidus (Coli Communis). 

 The microbian flora of abscess of the horse has been 

 studied by Nocard, Schultz and Lucet. Lucet examined 93 

 abscesses and found the white staphylococcus, pure or mixed, 

 47 times, — three of which were pure cultures, and the citrine 

 variety 28 times, out of 75 cases examined. 



Among the animals of the bovine species the pyogenic 

 micro-organisms are very probably the same as those found 

 in the other species. The differences in the cultures on mi- 

 croscopic examination must be attributed to the modifica- 

 tions of the environments. Lucet, in studying the microbian 

 flora of abscesses in the ox, has met chiefly staphylococci 

 and bacilli. In this species must be included the bacillus of 

 Hofflich and Enderlen, which generates pyelonephritis with 

 abscess formation in the kidneys. In the hog the microbe of 

 Charon is frequently associated with the ordinary micro- 

 organisms of suppuration. (Cadeac) 



In birds fetid abscesses are sometimes observed in the 

 neck and head. (Jacquot and Legrain). They are noted for 

 the offensive odor of the pus they contain. Jacquot and 

 Legrain have found this pus to contain a thick, short, motile 

 bacillus I to 1.2 microns thick, and 1.8 to 2 microns in length. 



