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THE EIGHTEENTH CENTLRY 325

will render the eruption of the tooth still more difficult, l^ell admits, too,
that lancing the gum is altogether superfluous when the tooth has pierced
the tissue, all the more so that the accidents provoked by the erup-
tion are then generally already passed and gone, but the operation ought,
in his opinion, to take place much earlier; and should the \vound close
again before the tooth has erupted, the gum must he lanced a second time.

Fig. 98

Campani's forceps: The first for molar teeth when loose or after having been shaken
with the pelican; the second for deciduous teeth.

Bell contradicts the opinion of Jourdain and Hunter that the morbid
gatherings of Highmore's antrum are generally consequent upon the closing
of the normal opening of the cavity in the middle meatus. In many
cases of disease of the maxillary sinus this orifice remains open, the
liquid therein collected discharging itself not unfrequently through it,
in certain positions of the bod}'. Instead of penetrating into the antrum