_Treatment._--The removal of all dead teeth involved. Other teeth whose pulps are living may be loose, and to a casual observer appear to be complicated, but a careful examination will reveal the fact that they should not be disturbed but retained in their places; only one tooth may be the offender, being a dead one which has caused the trouble. After the removal of the cause, let it be either one or more dead teeth or fangs of teeth, cyst walls may be punctured with a sharp instrument, and the contents of the sac released, this being done by carrying the instrument through the alveoli, and not through the bony parietes of the jaw. After the contents of the sac is let out, and the sharp spicula of bone trimmed, with engine burs, tincture of iodine full strength may be forced into the cyst sac, by saturating tufts of cotton-wool and allowing them to remain, again repeating the treatment at intervals of a day. If necrosis of bone be present, it is good practice to alternate the iodine treatment with aromatic sulphuric acid. Cases generally yield to this treatment in from six week to three months. I have seen cases not yielding to treatment for nine months. There are other and shorter methods in the treatment which perhaps some would prefer--the cutting down through the body of the tumor, by making a crucial incision and scraping out the contents of the sac, afterwards allowing nature to do the rest--but I do not believe it is the best or safest way. There is surely a much greater loss of structure, which is never restored as in the former method by granulation, after the secreting cells have been destroyed by medicinal applications of iodine and sulphuric acid treatment.--_Medical and Surgical Reporter._ ARTICLE V. THOROUGHNESS. BY L. P. DOTTERER, D. D. S. [Read before the South Carolina Dental Association.] Though scarcely more than a novice in the vast field of Operative Dentistry, I have gleaned sufficient experience from observation and practice to know that THOROUGHNESS is the surest means of success. Just as the tillers of the soil sow their seeds, watch their crops, and reap their harvests, so must we do our duty, advise our patients as to the best means of preservation, and would that I could say, reap our harvest. There has been so much written upon this subject that I have nothing _new_ to say, but will touch upon several points, and in giving my idea of thoroughness, as there applied, I may draw out some discussion. The first step towards the preparation of the mouth for dental operations is the removal of calculus and decayed fangs. Let this be done in a manner that will _insure future cleanliness_, where the proper after attention is given on the part of the patient.