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Newspaper Page Text
NEW STUNT DOWN ON THE FARM
The hens are trained to lay eggs for omelets at meal time.
, WHY TEETH DECAY
There are more than thirty va
rieties of bacteria naturally in the
mouth. They are not there when
a child is born, but they begin to
arrive soon afterward. In addi
tion to those which each person
has in the mouth, there areothers,
such as- .pneumonia and diphr
theria bacilli, which are only to
be found in some mouths.
The ordinary bacteria secrete
alkaline substances which are not
harmful to teeth. But there are a
few which produce acid. These
Little particles of food lodge in
a crack or some shielded place in
the tooth. Into'it germs find their ;
way. They grow and secrete acid.
This dissolves the enamel of the
teeth. The result is a CAVITY.
The more acid and the larger
number of germs the greater the
In short, decay in the teeth
comes from acid working in one
place. Acid comCs from germs,
and germs feed upon food refuse
Cavities may be cleaned out"
and filled. But the wise, sane
process is to keep the mouth and
the teeth so clean that decay will
not make its appearance.
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