This dissection is advocated and can be readily done from one of the nostrils at a point just beyond the union of skin and mucous membrane. The dissection under such method can be made more thoroughly than when done exteriorly, for the reason that the entire field is laid open to a free use of the scalpel, leaving no visible cicatrix externally. The dissection may be followed by the immediate injection of the mixture of paraffin and vaselin, as already referred to, used cold, or the area is injected with normal salt solution until the intranasal wound has healed, which usually takes place in about five days. The mucous membrane in such instance may be neatly but not too tightly sutured with No. 1 silk. If the operator deems it advisable he may inject the salt solution again on the third day to prevent the formation of such adhesions as may interfere with the ultimate hydrocarbon injection. This is rarely found necessary. If the post-operative inflammation prove mild, then the adhesions will not be as tenacious, in which case the surgeon may wait until even the seventh or eighth day before injecting the paraffin compound, to be sure of not forcing the intranasal wound apart under the pressure of the mass injected. Never should so large a quantity of the mass be injected as to cause blanching of the narrow strip of skin. This is sure to result in gangrene of some, if not all, of the skin of the subseptum—a result much to be regretted, since subsequent correction of the deformity increased by the contraction of the dermal cicatrix is rendered well-nigh impossible by reason of this very tissue. Hard paraffin injected in its molten state is never borne in this part of the human economy. It is usually thrown off after a few days of very painful and highly inflammatory symptoms, undoubtedly explained by the fact that the circulation of the subseptum is principally dependent upon the delicate branches of the two small septal arteries of the superior coronary and a hard, ungiving mass would readily cause their obliteration. DEFORMITIES ABOUT THE MOUTH =Labial Deficiency= _(Upper and Lower Lip)_.—There are a number of causes creating deficiencies about the labial orifice. The same causes apply naturally to both lips, whether the defect be unilateral, bilateral, or median. Some of these deformities are more often met with than others, as, for instance, a median deficiency of the upper lip following cicatricial contraction due to a harelip operation done early in life; in elderly patients a partial paralysis is found to affect one half the upper and sometimes a part of the lower lip, giving to the mouth a drooped and grinning appearance. Other causes are dental defects, abnormalities of the alveolar processes, traumatism, and disease.