DUST. 
5 
making some wind currents. If dust is present in this 
current, it will be stirred up to settle back, where it 
was before, or to be blown to some other place. The 
more dust or the stronger the wind, the surer it is that 
the dust will be carried along with the current. 
But why should the housewife spend so much energy 
and time in trying to keep her house free from dust? 
All the dust elements we have seen so far are no.t likely 
to do her much harm. The ashes or other mineral dust 
may scratch the polished table or the brass ornaments 
and silverware, but not so long as it lies quiet. It is 
the moving grain of sand, not the still one, that 
scratches. The other ingredients, bits of dead animal 
or vegetable matter, may be disagreeable to think of, 
but they are of the same stuff as ourselves, our clothes, 
our furniture. If this dead matter were all there is 
to dust, no one would ever have heard of the science 
of bacteriology. 
Many of the daily occurrences in the home give 
rise to questions which may be readily answered if we 
will but turn our kitchens into laboratories and try 
some simple experiments. 
Perhaps you forgot to change the water in a vase of 
flowers and it stayed there a week. How did it smell 
when you poured it out? How did the stems that had 
been in the dirty water feel? 
Possibly when you left home for a week’s visit last 
summer, you knew the ice was all gone from the refrig¬ 
erator, but you forgot to empty the pan underneath. 
Why Keep 
Free From 
Dust 
Familiar 
Experiences 
