168 Culture Chaeacters 



Reaction of media (Fuller 's scale) -j- or 



Gelatin plate: Grown 24 hours at °C. 



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



Sketches. 



48 hours at °C. 



6 days at. 



•C. 



(a) Surface Colonies. 



Agar plate: Grown 24 hours at °C. 



(b) Deep-Colonies. 



Sketches. 



48 hours at °C. 



6 days at °C. 



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



