150 CULTUEB ChAEACTEES 



Eeaction of media (Fuller's scale) -|- or 



Gelatin plate: Grown 24 hours at °C. I Sketches. 



(a) Surface Colonies. : (h) Deep Colonies. 



48 hours at °C. 



6 days at "C. 



Agar plate: Grown 24 hours at °C. 



(a) Surface Colonies. ; (b) Deep Colonies. 



Sketches. 



48 hours at °C. 



6 days at °C. 



Special Media: (Such as litmus milk and blood serum.) 



