134 BACTERIOLOGY 



colonies with ill-defined margins develop on the gelatine 

 plate, and later on send out shoots resembling the filaments 



ft. 



Liquefied portion 



Processes extending radially 

 from the needle-track 



FIG. 47. THRUST-CULTURE IN GELATINE OF BACILLUS RAMOS us (THIRD DAY). 



of mould. When, after growing for some time, the fibres 

 have become entangled with one another, they form an 

 interlacing root-like network (fig. 46), an appearance which 



