200 LAURENCE F. FOSTER 



Limits of hydrogen-ion concentration which permit growth of organisms — continued 



OHGANI8M 



Bact. typhosum 



Bad. paraty- 

 phosum (A) 



Bact. paraty- 

 phosujn (B) 



Bact. dysente- 

 riae (Flex- 

 ner) 



Bact. dysente- 

 riae (Shiga) 



C. ivelchii 



C. metchnikoff 



Hemophilus 

 influenzae 



Corynebact. 

 diphtheriae 



V. cholerae 



B. melitensis 



REFERENCE 



Fennel and Fish- 

 er (1919) 



Schoenholz and 

 Meyer (1919) 



Fennel and Fish- 

 er (1919) 



Fennel and Fish- 

 er (1919) 



Fennel and Fish- 

 er (1919) 



Fennel and Fish- 

 er (1919) 



Wolf and Harris 

 (1917a) 



Wolf and Harris 

 (1917a) 



Fennel and Fish- 

 er (1917a) 



Bunker (1916-17) 



Fennel and Fish- 

 er (1919) 



Fennel and Fish- 

 er (1919) 



Nutrient agar 



Nutrient agar 



Nutrient agar 



Nutrient agar 



Nutrient agar 



Glucose-peptone 

 (2 per cent) 

 water 



Glucose-peptone 

 (2 per cent) 

 water 



Chocolate medi- 

 um 



Extract agar or 

 broth 



Nutrient agar 



6.2-7.2 

 6.8-7.0 



6 2-7.2 



6.2-7.2 



6.2-8.4 



6.2-8.4 



7.8-8.0 



6.5-7.5 



6.2-8.0 



6.6-8.2 



