BACILLUS PRODIGIOSUS 



115 



downwards and coalesce with one another if they lie closely, 

 the diagnosis being established by the early appearance of a 



Funnel-shaped 

 area of lique- 

 faction 



Funnel-shaped 

 area of lique- 

 faction 



FIG. 39. THRUST-CULTURE IN GELATINE 

 OF BACILLUS SUBTILIS (THIRD DAY). 



Needle-track in 

 the unliquefied 

 part 



FIG. 40. THRUST-CULTURE IN GELATINE 

 OP BACILLUS PRODIGIOSUS (FOURTH DAY). 



red colour. The thrust-culture liquefies from the surface 

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



i 2 



