BACILLUS PRODiaiOSUS 



115 



downwards and coalesce with one another if they He closely, 

 the diagnosis being established by the early appearance of a 



i\ 



- Funnel-shaped 

 area of lique- 

 faction 



. I 



! 



- Funnel-shaped 

 area of lique- 

 faction 



Fig. 39. — Thrtjst-Culture dt Gelatinte 

 OF Bacillus subtilis (third day). 



Needle-track in 

 the unliquefied 

 part 



Fig. 40. — THnusT-CuLTtrRB ts Gelatine 

 OF Bacxllus pbodigiobtjs (fourth day). 



red coloTir. The thrust-culture liquefies from the surface 

 down, and soon a funnel-shaped area of liquefaction is 



I 2 



