32 
North Carolina Agricultural Experiment Station 
Table 6._Influence of Varying Concentrations of Dextrose in Plain 
Bouillon Upon the Final pH Concentrations. Initial pH 7.2 
Organisms 
Bacterium tabacum. 
Bacterium angulatum - 
Bacillus carotovorus.-- 
Bacterium glycineum. 
Bacterium sojae. 
Bacterium campestre -. 
Age of Cultures in Days and pH Concentrations 
Concen- 
tration 
of 
Days 
Dextrose 
1 
2 
3 
4 
5 
7 
9 
11 
Per Cent 
pH 
pH 
pH 
pH 
pH 
pH 
pH 
pH 
0.1 
7.0 
7.0 
7.0 
7.2 
7.4 
7.8 
8.4 
8.4 
0.3 
7.0 
7.0 
6.8 
7.2 
7.4 
7.6 
8.2 
8.4 
0.6 
7.0 
6.8 
6.4 
6.4 
6.8 
7.2 
7.8 
8.4 
1.0 
7.0 
6.2 
6.0 
6.2 
6.2 
6.4 
7.4 
8.0 
2.0 
7.0 
6.0 
5.6 
5.4 
5.2 
5.0 
5.0 
5.0 
0.1 
7.0 
7.0 
7.0 
7.0 
7.4 
7.8 
8.2 
8.4 
0.3 
7.0 
7.0 
6.8 
7.0 
7.4 
7.6 
8.4 
8.4 
0.6 
7.0 
6.8 
6.4 
6.4 
6.6 
7.0 
7.6 
8.2 
1.0 
7.0 
6.2 
6.2 
6.4 
6.4 
6.8 
7.4 
8.0 
2.0 
7.0 
6.0 
5.6 
5.4 
5.2 
5.2 
5.0 
5.0 
0.1 
5.6 
5.4 
5.4 
5.6 
6.2 
7.4 
8.2 
8.4 
0.3 
5.6 
5.2 
5.2 
5.0 
5.0 
5.0 
5.0 
5.0 
0.6 
5.4 
5.2 
5.0 
5.0 
5.0 
5.0 
5.0 
5.0 
1.0 
5.4 
5.2 
5.2 
5.0 
5.0 
5.0 
5.0 
5.0 
2.0 
5.4 
5.2 
5.2 
5.0 
5.0 
5.0 
5.0 
5.0 
0.1 
7.0 
7.0 
6.6 
7.2 
7.6 
8.0 
8.2 
8.4 
0.3 
7.0 
7.0 
7.0 
6.8 
7.0 
7.4 
7.8 
8.2 
0.6 
7.0 
6.8 
6.8 
6.4 
6.8 
7.0 
7.6 
8.0 
1.0 
7.0 
6.8 
6.6 
6.6 
6.4 
6.6 
7.0 
7.4 
2.0 
7.0 
6.8 
6.4 
6.2 
5.8 
5.2 
5.0 
5.0 
0.1 
7.0 
7.0 
7.0 
7.2 
7.6 
8.0 
8.2 
8.4 
0.3 
7.0 
7.0 
7.0 
7.2 
7.4 
7.6 
8.0 
8.2 
0.6 
7.2 
6.8 
6.8 
6.8 
7.0 
7.2 
7.6 
8.0 
1.0 
7.0 
6.8 
6.8 
6.6 
7.0 
7.2 
7.4 
7.8 
2.0 
7.0 
6.8 
6.4 
6.4 
6.2 
6.0 
5.6 
5.4 
0.1 
7.2 
7.2 
7.2 
7.2 
7.4 
7.6 
7.8 
7.8 
0.3 
7.2 
7.2 
7.2 
•7.2 
7.4 
7.4 
7.8 
7.8 
0.6 
7.2 
7.2 
7.2 
7.4 
7.4 
7.6 
7.8 
7.8 
1.0 
7.2 
7.2 
7.2 
7.2 
7.4 
7.6 
7.6 
8.0 
2.0 
7.2 
7.2 
7.2 
7.2 
7.4 
7.4 
7.4 
7.6 
