176 INFECTIVE DISEASES. 



Rosenbach examined six cases of metastatic pyaemia : Strepto- 

 coccus pyogenes was found five times, partly in the blood and partly 

 in the metastatic deposits, and twice in company with Staphylococcus 

 pyogenes aureus. 



Baumgarten, also, found Streptococcus pyogenes in the internal 

 organs in pysemic cases, and Eiselsberg found Streptococcus pyogenes 

 in company with Staphylococcus pyogenes aureus in the blood of 

 cases of septicaemia. 



Frankel isolated a streptococcus from puerperal fever, which 

 he at first called Streptococcus puerperalis, but subsequently 

 identified with Streptococcus pyogenes. These researches have 

 been confirmed by others. Winkel obtained a pure cultivation of 

 a streptococcus from the blood of the heart in a case of puerperal 

 peritonitis. It produced erysipelatous redness when inoculated 

 in the rabbit's ear, and in form and in cultivation was similar to 

 the streptococcus in erysipelas. Gushing also found Streptococcus 

 pyogenes associated with puerperal infection. The cocci were 

 found in endometritis diphtheritica as well as in secondary puerperal 

 inflammation. These observations were still further confirmed by 

 Baumgarten, and Bumm isolated the same organism in puerperal 

 mastitis. 



DESCRIPTION OF BACTERIA IN Pus. 



A description may now be given of the cocci most frequently 

 found. Staphylococcus pyogenes aureus and albus and Strepto- 

 coccus pyogenes and Gonococcus are the most important of these. 

 Staphylococcus pyogenes citreus, cereus albus and flavus, are pro- 

 bably merely epiphytic. Micrococcus tetragenus, Micrococcus 

 pyogenes tenuis, Ba'cillus pyogenes foetid us, Bacillus pyocyaneus, 

 Bacillus coli communis, Bacillus septicus vesicae, Urobacillus lique- 

 faciens septicus, and Bacillus intracellularis meningitidis will be 

 described fully in Part III. The description of Actinomyces, of 

 Micrococcus pneumoniae crouposae and of the bacilli of anthrax, 

 tuberculosis, glanders, and typhoid fever, will be found in other 

 chapters in Part II. 



Staphylococcus pyogenes aureus (Rosenbach). Yellow 

 coccus in pus (Ogston). Cocci singly, in pairs, very short chains, and 

 irregular masses. Cultivated on nutrient agar-agar, an orange- 

 yellow culture develops, looking like a streak made with oil paint. 

 One variety grows on nutrient gelatine without liquefying it ; 

 another produces rapid liquefaction, and the growth subsides as 



