Page 368 - My FlipBook

340 THE MICRO-ORGANISMS OF THE HUMAN MOUTH.
occur, which proceed from the alveoli of the molars or from the
spongiosa of the bone, inflate the latter, corrode it, and finally,
after having loosened the molars and destroyed the normal tis-
sues which impeded their growth, break through the skin ex-
ternally or into the oral or pharyngeal cavities.
" The inflated bones have
l^fo- 122. a pumifce-stone-like appear-
ance, caused by central osteo-
porosis and external hyper-
ostosis. Most of the bulbous
and conglomerated growths,
which, after some length of
time, often become puriform
or entirely break down, and
lead to the formation of ul-
cers, abscesses, and fistulous
canals, usually attain the size
of a child's head or even
beyond.
" Such tumors are com-
posed of a conglomeration of
soft consistency, pale yellow-
ish color, and juicy luster
(saftigem Glanze), united by
tense connective tissue. On
the surflice of the cut we
find scattered, usually cloudy,
yellowish-white, abscess-like
centers, or the hard cores are
of spongious structure, show-
The Ray-Fun'gus. (Actinomyces.)
ing numerous hemp-seed-
(After Ponfick.)
sized spaces and caverns in
the fibrous stroma, which contain murky, yellow, thick, often
cheesy pap. The mass of the tumor is infiltrated with a puri-
form or cheesy substance which often shows a reticular arrange-
ment, and may be readily obtained by scraping the surface of the
cut with a knife.
" The microscopical examination reveals, among other things,