248 Culture Chaeactees 



Reaction of media (Puller 's scale) -|- or 



Gelaiin plate: Grown 24 hours at °C. 



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



Sketches. 



48 hours at °C. 6 days at 



Agar plate: Grown 24 hours at °C. 



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



Sketches. 



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



