Note 38 — DISSERTATION II. CONTINUED.

There is a curious case of caries, which is frequently met with: The diseased part, instead of being cast off, is surrounded by a covering of new bone, (except at one portion, where a sinus and ulcer is formed in the soft parts) and may be felt rattling within it. In this case, there is necessarily a permanent enlargement of the part, from the additional bony matter; and this, together with the sinous openings, and the internal caries, being felt with the probe, form the character of the disease, which has been called necrosis, a term which formerly implied merely mortification. The cure of this complaint is to be accomplished by extracting the diseased part, when it becomes loose, if the opening in the case be sufficiently large; if not, it is to be enlarged with the trephine, &c. See the works of Ruysch, Default, &c.; and, more lately, the publication of Mr. Russel.