SYSTEMATIC AND DESCR 



ing abscess formed, which was fatal to the animal in 

 about twelve days. No bacteria were observed in 

 the blood, but in the walls of the abscess thick 

 masses of cocci were found. The pus is infectious, 

 causing the same disease in healthy rabbits. 



Micrococcus parvus ovatus (Bacillus parvus 

 ovatus, Loffler). Small ovoid cocci, similar to the 

 coccus of rabbit septicaemia. Cultivated on gelatine 

 they develop readily a greyish-white growth at the 



FIG. 74. MICROCOCCUS OF PYAEMIA IN RABBITS ; VESSEL FROM THE 

 CORTEX OF THE KIDNEY, x 700. (a) Nuclei of the vascular wall ; (c) 

 Masses of micrococci adherent to the wall and enclosing blood corpuscles. 



entrance of the inoculating needle. They are 

 pathogenic in mice and rabbits. They proved also 

 fatal in a pig after two days, producing oedema of 

 the skin, inflammation of the mucous membrane of 

 the stomach, but no effect on the general intestinal 

 tract or mesentery. They were isolated from a pig 

 suffering from a fatal disease simulating swine- 

 erysipelas. 



Micrococcus of pyaemia in mice, Klein. 

 Certain cocci which were present in pork broth 



