The principles of surgery . nts, p. 177. Patient a policeman, aet. 22. lous texture, pus will probably begin to ooze by the side of the instru-ment. In withdrawing the trephine, along with the laminated portionof bone which it has detached, a tea-spoonful or two of tolerably laudablepus may escape; and then, evacuation having been fully accomplished,the patient passes almost at once from most cruel torment into placidrepose. The flaps are replaced, and the wound treated on ordinaryprinciples. All inordinate excitement quickly subsides; and the partultimately cicatrizes, firmly and permanently.
The principles of surgery . nts, p. 177. Patient a policeman, aet. 22. lous texture, pus will probably begin to ooze by the side of the instru-ment. In withdrawing the trephine, along with the laminated portionof bone which it has detached, a tea-spoonful or two of tolerably laudablepus may escape; and then, evacuation having been fully accomplished,the patient passes almost at once from most cruel torment into placidrepose. The flaps are replaced, and the wound treated on ordinaryprinciples. All inordinate excitement quickly subsides; and the partultimately cicatrizes, firmly and permanently. Should the first trephining fail to detect pus, and the symptoms yetbe most convincing of its presence, the instrument is to be reapplied ;with hopes of a better success—as is well exemplified in a case detailedin Listons Elements, p. 11G. By such comparatively simple procedure, both life and limb may besaved ; an important fact; for which our profession stands indebted toSir Benjamin Brodie. CHRONIC ABSCESS OF BONE. 377. Chronic Internal Abscess.—This may result from the acute; the in-flammatory process subsiding, no primary osseousbarrier of limitation existing, and pus continuing tobe formed not more rapidly than the surrounding partscan accommodate themselves to by expansion. Orthe inflammatory process is chronic throughout. Thelaminated texture is gradually distended; and thecancellous is either condensed, assisting to form theparietes of the cavity; or is removed by absorption,ulceration, or both. Sometimes small dead portionsbecome detached, and mingle with the fluid cavity steadily enlarges. Its contents are puru-lent, but usually thin ; commingled with the ulcerativedebris, and, as just observed, often containing smallsequestra. A distinct pyogenic membrane lines theinterior ; and the walls consist of the expanded laminaeof the bone, strengthened from time to time by recentosseous deposit. On making a section of bone soaffected, its laminated portion
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