I 2 6 BACTERIOLOGY. 



In Paris, in 1843, the fungus was peculiarly 

 prevalent, attacking especially the bread produced 

 in the military bakehouses. 



The cocci themselves are colourless. The colour- 

 ing matter resembles fuchsine ; it is insoluble in 

 water, but soluble in alcohol. The addition of 

 acids changes it to a carmine red, and of alkalies 

 to a yellow colour. 



Micrococcus of septicaemia in rabbits, 

 Koch.* Ellipsoidal cocci '8 i JJL in largest diam. 

 The disease was produced by the injection of putrid 

 meat infusion. After death slight oedema was 

 noted at the site of injection, slight extravasation of 

 blood, and great enlargement of the spleen. No 

 emboli or peritonitis resulted. Masses of cocci 

 were found in the capillaries of different organs, 

 especially in the glomeruli of the kidneys. Rabbits 

 and mice inoculated with blood from the heart 

 proved susceptible to the disease. 



Micrococcus of pyaemia in rabbits, 

 Koch.*)" Round cocci and diplococci '25 //, in 

 diam. The disease was produced by the subcu- 

 taneous injection in a rabbit of distilled water, in 

 which the skin of a mouse had been macerated. 

 At the autopsy there were found great infiltration 

 around the site of injection, peritonitis, and accu- 

 mulations in the liver and lungs ; in short, the 

 appearances of pyaemia. In the capillaries of the 



* Koch, Wundinfect. Krankheit, 1878. 

 t Koch, ibid. 



