174 



INFECTIVE DISEASES. 



The bacteria whicli have been isolated from pus include : — 

 Staphylococcus pyogenes aureus, albus, and citreus, Staphylo- 

 coccus cereus flavus and albus, Streptococcus pyogenes, Micrococcus 

 pyogenes tenuis, Micrococcus pneumoniae crouposse. Bacillus pyo- 

 cyaneus. Bacillus pyogenes foetidus, Micrococcus tetragenus, Bacillus 

 intracellularis meningitidis, Gonococcus, Bacillus septicus vesicae, 

 TJrobacillus liquefaciens septicus. Bacillus typhosvis. Bacillus coli 

 communis, Bacillus anthracis, Bacillus tuberculosis. Bacillus mallei, 

 and Actinomyces. 



Fig. 8,3. — Suppueation of Subcutaneous Tissue. 



d, Leucocyte containing micrococci ; d', leucocyte with pale nucleus showing 

 necrosis ; c, fixed connective tissue cells, much enlarged, containing several 

 nuclei, of which some («') are pale and necrotic ; numerous cocci, diplococci, 

 and short chains. (Coknil and Ranvier. ) 



Some idea of the disti'ibution of the bacteria most commonly 

 occurring in pus may be gathered from the records made by Passet 

 and by Karlinski. 



Passet examined acute abscesses, and found Staphylococcus 

 pyogenes aureus and albus in 11 cases. Staphylococcus pyogenes 

 albus alone in 4, Staphylococcus pyogenes albus and citreus in 2, 

 Streptococcus pyogenes alone in 8, Staphylococcus pyogenes albus 

 and Streptococcus pyogenes in 1, and Staphylococcus pyogenes albus 

 and citreus, and Streptococcus pyogenes in 1. 



