INDEX OF INFECTIOUS DISEASES AND 

 BACTERIA FOUND IN THEM. 



Abscesses. The bacteria most commonly found in acute abscesses 

 are : Staphylococcus pyogenes aureus, 468, and albus, 470, and strep- 

 tococcus pyogenes, 481-483. The following species are also occa- 

 sionally met with: Pneumococcus, 509; colon bacillus, 449-453; 

 typhoid bacillus, 410; micrococcus tetragenus, 472, and influenza 

 bacillus, 324. In " cold abscesses " the tubercle bacillus is usually 

 the only micro-organism present. Beside these bacteria other varie- 

 ties may sometimes cause circumscribed suppurative processes. 



Acne. Unna and Hodara (1894) obtained a bacillus from the 

 contents of acne pustules which they believe to be the cause of true 

 acne in man. Staphylococci are usually present in the pustules, and 

 undoubtedly exert some influence in the production of the affection. 



Actinomycosis. Due to the presence of the actinomyces or ray 

 fungus, 618. 



Alopecia. Although many dermatologists consider alopecia 

 areata to be of neurotic origin, others incline to the belief that 

 this affection is due to micro-organisms. Definite proof, however, 

 is still wanting of the infectiousness of the disease, or of the causal 

 relation of any specific micro-organism to it. Holborn (1895) de- 

 scribed a micra-ui' 6 ..- ' " wlvrh he named trichophyton radeus, 

 obtained it in pufre culture ^ pi^aced a similar affection in rab- 

 bits by inoculation, claiming that it was the cause of the disease in 

 man. 



Angina. When not diphtheritic the pyogenic cocci, 483, includ- 

 ing the pneumococcus, are most frequently found in angina, also 

 Vincent's bacillus, 354. 



Anthrax. Due to the bacillus anthracis, 554. 



Appendicitis. In thirty-two put of thirty-five cases of appen- 

 dicitis bacteriologically examined by Hodenpyl (1893) the bacillus 



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