SUPPURA TION. 259 



In 11 cases studied by Wright 1 a general streptococcus 

 infection occurred in 4, a pneumococcic infection in 1, 

 and a mixed infection of pyogenic cocci in 1. 



Lemoine 2 found streptococci in the blood during life 

 in 2 out of 33 cases studied. Pearce s studied 17 cases 

 and found streptococci in the heart's blood and liver in 4 

 cases, in the spleen in 2 cases, in the kidney in 5 cases. 

 In 2 of the cases it was mixed with the Staphylococcus 

 pyogenes aureus. 



The streptococcus is the most common bacterium 

 found in the suppurative sequelae of scarlatina, fre- 

 quently occurring alone, sometimes with the staphylo- 

 cocci, sometimes with the pneumococci. As found asso- 

 ciated with scarlatina the organisms have no peculiarities 

 by which it is possible to differentiate them from the 

 Staphylococcus pyogenes. 



The streptococcus of Rosenbach is thought to be iden- 

 tical with a streptococcus described by Fehleisen as the 

 Streptococcus erysipelatis (Fig. 56). It may seem unwise 

 to omit the Streptococcus erysipelatis as a major topic 

 for discussion, but the similarity of the organism to that 

 just described has caused me to consider them in the 

 same chapter. 



The streptococci of erysipelas can be obtained in almost 

 pure culture from the serum which oozes from a puncture 

 made in the margin of an erysipelatous patch. They are 

 small cocci, forming long chains — generally from six to 

 ten individuals, but sometimes reaching a hundred in 

 number. Occasionally the chains can be found collected 

 in tangled masses. They can be cultivated at the room- 

 temperature, but grow much better at 30-37 C. They 

 are not particularly sensitive to the absence of oxygen, 

 but develop a little more rapidly in its presence. 



The erysipelas cocci, like the Streptococcus pyogenes, 

 are not motile, form no spores, and are destroyed by a 



1 Boston Med. and Surg. Journal, March 21, 1895. 



2 Bull, et mini. Soc. d'hdp. de Paris, 1896, 3 s M xiii. 



8 Journal of the Boston Society of the Medical Sciences, March, 1898. 



