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Fio. 114.
Fig. 114. The photograph in this ca.se was taken with the surface dry, with the expectation that
the areas of decay would show whiter. This succeeded well with the decay on the left side, but not
with the one on the right. The hyaline area of the left decay is well shown. The extension occlusally
of decay along the dento-enamel junction and the very white backward decay of the enamel are inter-
esting features. After this photograph was made, the polished surface was cemented to a cover glass
and ground thin for photomicrographing, and Figures 115, 116 were made.
13a
