BACTERIOLOGY. 



yellow sediment. On potatoes and blood serum a 

 similar orange-yellow culture grows luxuriantly. 



The micro-organisms injected into the pleura or 

 knee of a rabbit produce, as a rule, a fatal result 

 on the following day, but if it survives longer, it 

 eventually dies of severe phlegmon. If injected 

 into the knee of a dog, suppuration occurs, fol- 

 lowed by disintegration of the joint. The cocci do 

 not cause any septic odour in pus, nor does any 

 gas develop. Albumen is converted by their action 

 into peptones. 



They occur in the pus of boils and in the 

 abscesses of pyaemia, puerperal fever, and acute 

 osteomyelitis. Injected into the peritoneal cavity 

 of animals, they set up peritonitis, and introduced 

 into the jugular vein they produce septicaemia and 

 death. When a small quantity of a cultivation was 

 introduced into the jugular vein after previous 

 fracture or contusion of the bones of the leg, the 

 animal died in about ten days, and abscesses were 

 found in and around the bones, and in some cases 

 in the lungs and kidneys. Similar cocci were found 

 in the blood and pus of the animals.* 



Streptococcus pyogenes albus (Staphyio- 

 coccus pyogenes albus, Rosenbach). Cocci micro- 

 scopically indistinguishable from the above. In 

 cultivations also they resemble the Streptococcus 

 pyogenes aureus, but the growth consists of opaque 

 white masses. They liquefy nutrient gelatine 



* Becker, Deutsche Med. Wochenschr. Nov. 1883. 



