BY R. GREIG-SMITH. 113 



indol is formed and nitrates are reduced to nitrites. On potato 

 a moist transparent growth is slowly formed. Gelatine is slowly- 

 liquefied, and no gas is produced from glucose. In stab-culture, 

 the gelatine is softened and the growth gravitates. It is not 

 patliogenic to mice. 



These characters show that it is only distinguishable from 

 Micrococcus pyogenes y albus (Rosenbach) by its being non- 

 pathogenic to mice. 



Postscript {added oOth April, 1909). — After this paper was 

 read, a fresh specimen of coagulated milk was obtained. The 

 micrococcus was isolated and its lethal temperature tested imme- 

 diately after isolation. The infected milk exposed for 10 minutes 

 at 62° was coagulated and at 63" was unaltered upon incubation. 



