BACTERICIDAL INFLUENCE OF FLOUR 
Experiment 7. Sterilized water inoculated with B. typhosus. 
When cultures were 
made 
Dilution 
No. of colonies on 
plate 
No. of bacteria per 
c.c. 
Immediately 
I : 1 
00 
00 
2 days 
I : I 
O 
0 
3 days 
I : I 
O 
O 
The work has had to be interrupted. It remains for further investigation to 
show precisely to what extent a constituent or flour is responsible for the inhibitory 
action, or to what extent the decrease in nutriment determines the diminution in the 
number of bacilli. 
In closing, I wish to thank Dr. Grunbaum, who suggested this line of research. 
