For the latter reason repeated small injections have been advised, but the author believes oft-repeated injections of paraffin in a small area are prone to set up considerable disturbance, and that the resultant tissue replacement is interfered with. Furthermore, the injected mass would eventually be in grape-bunch like form, and in that condition not as manageable or inducive to the establishment of contour angulation, such as is required in the chin. The final appearance of chins thus rebuilt is heavy and rounded, lacking the concavity above the inferior prominence along the anterior line as well as the angulation laterally. With the cold mixture advised a considerable mass may be injected at one sitting, which is easily molded into form and which retains that form unless the reactive inflammation is severe. This should not follow unless actual hyperinjection has been done or an unclean product has set up an infective cellulitis. When the chin is uncommonly peaked, or small, it may be found necessary to inject both sides of the chin beyond the angle and in an upward direction slightly below and following the external oblique line. Such deficiency may be found decidedly unilateral as a result of lack of development of one half of the lower maxillary bone, a resection of either maxilla for whatever cause, imperfect union following fracture or disease of the bone early in life. In such cases the lateral deficiency must be first restored, using the same method, before the chin proper can be built up. Ofttimes the lower cheek of the affected side must also be injected. This should be done after the site overlying the former body of the maxilla of the affected side has been rebuilt. The cheek should then be built out above this hard linear mass by the injection of cold white vaselin, as heretofore referred to. The following illustrations show a chin deficient anteriorly and laterally before and the result after correction. The post-operative treatment should be collodion dressing, followed by cold antiseptic applications for at least two days. The latter ameliorates the inflammation and helps to retain the molded shape of the mass. Subsequent sittings may be made one a week or ten days apart. DEFORMITIES ABOUT THE EAR =Pro-auricular Deficiency= _(Unilateral and Bilateral)_.—A deep furrow in front of the ear may be found unilateral in hemiatrophy of the face, but the condition is usually a bilateral one, due to malnutrition or the fatty degeneration of past middle age. In the latter case the depression is accompanied by a redundancy and wrinkling of the skin. Owing to the close proximity of the large temporal vessels a hard mass should never be injected subcutaneously for the relief of this condition. Even the mixture of vaselin and paraffin has caused considerable reaction when injected to overlie these vessels.