Page 157 - My FlipBook
P. 157
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from without inward, but after the decay has passed through
the enamel it spreads along the dento-enamel junction in
every direction and then the enamel that is undermined will
decay from within outward, and that we term backward de-
cay. He found that in this backward decay he could not hold
the micro-organisms in position by his hardening processes
as he held them in position in direct decay. There seemed
to be a difference, and that difference was in the agglutinating
process, by the formation of gelatinous material, for Dr.
Williams saw that in direct decay they seemed to hang to-
gether so that he could harden them, hold them well in posi-
tion, while in the backward decay, in spite of him, they would
be torn out of the section. And he remarked this difference
that in direct decay where they are liable to disturbance and
removal continually, they must literally bind themselves to-
gether, forming comparatively a solid wall, or be worsted in
the struggle for existence ; while in the interior, where they
were not disturbed, it seemed as though it was not so neces-
sary to their existence that they cHng together in this way.
Now there is a difference in condition and in localities
that seems to call out a difference in the physiological process
of micro-organisms by which they form this gelatinous ma-
terial in the one position, and not in the O'ther, accounting for
this difference that Dr. Wilhams found in the agglutinating
together in the one case and the failure to agglutinate to-
^
gether in the other.'
145
from without inward, but after the decay has passed through
the enamel it spreads along the dento-enamel junction in
every direction and then the enamel that is undermined will
decay from within outward, and that we term backward de-
cay. He found that in this backward decay he could not hold
the micro-organisms in position by his hardening processes
as he held them in position in direct decay. There seemed
to be a difference, and that difference was in the agglutinating
process, by the formation of gelatinous material, for Dr.
Williams saw that in direct decay they seemed to hang to-
gether so that he could harden them, hold them well in posi-
tion, while in the backward decay, in spite of him, they would
be torn out of the section. And he remarked this difference
that in direct decay where they are liable to disturbance and
removal continually, they must literally bind themselves to-
gether, forming comparatively a solid wall, or be worsted in
the struggle for existence ; while in the interior, where they
were not disturbed, it seemed as though it was not so neces-
sary to their existence that they cHng together in this way.
Now there is a difference in condition and in localities
that seems to call out a difference in the physiological process
of micro-organisms by which they form this gelatinous ma-
terial in the one position, and not in the O'ther, accounting for
this difference that Dr. Wilhams found in the agglutinating
together in the one case and the failure to agglutinate to-
^
gether in the other.'
145
