94 



RELATIONSHIPS OF THE COCCACE^E 



second subgroup which raises the average value for the genus. 

 One of the most striking points about the curve is the 



i Bhodococcus 



-.0025 .0025 



.0075 



streptococcus 



.0125 .0175 .0225 

 Normal Acidity 



.0275 



.0325 



.0375 



FIG. II. Acid Production of certain Genera of the Coccaceae in 

 Dextrose Broth. 



tendency exhibited to tail off very gradually toward ex- 

 tremely high acidities, a phenomenon due, of course, to the 

 presence of subgroups of very great fermentative power. 



