32 
HOUSEHOLD BACTERIOLOGY. 
Importance 
of 
Bacteriology 
cause putrefaction. Each of these differences means' 
much to the trained observer, for from such results 
has been and must be gathered our knowledge of 
their probable behavior outside of the laboratory. 
In the bacteriological laboratory has been found 
out facts which in the commercial life of the world 
mean millions of dollars; there, too, have been started 
experiments which have led to incalculable saving of 
human suffering and life, through sanitation, pre¬ 
ventive medicine, and surgery. 
Here we see how the little things of life have con¬ 
founded the mighty and how “the science of the 
infinitely small/’ by which some one has defined bac¬ 
teriology, “has become the infinitely important.” 
