The author advises the injection of white sterile vaselin or sperm oil for this form of correction. It should be carefully injected, since the vessels lie close to the skin with the anterior auricular crossing transversely about the center of the furrow. Every precaution should be taken, one injection only being made from below upward at each sitting if more than one is necessary, and then only after the needle has been unscrewed from the syringe to make sure vessel bleeding does not follow the puncture. The reaction is usually severe, with considerable edema and ecchymosis. The resultant tissue formation likewise is active, and hyperplasia at this site is not uncommon, especially if the mixture or hard paraffin has been employed. A cellulitis following such an injection is exceedingly troublesome, the injected mass being thrown off usually at the base of the furrow, which is followed by a low type of inflammation with a protracted oozing of serous exudate. Should such a case come under the care of the surgeon, thorough cleansing of the affected site under scrupulous antisepsis should be done at once, and wet antiseptic dressings be applied daily until the wound is entirely healed. A plastic skin operation must be done in most of these cases to overcome the ragged cicatrix formed upon healing of the wound. This should never be undertaken until the wound has been healed for several weeks at least. After the injection of the parts cold antiseptic dressings should be applied at once, and kept up until every sign of reactive inflammation has subsided. At no time should the subsequent injection be undertaken before a month has elapsed from the time of the former operation. =Post-auricular Deficiency.=—This defect is invariably unilateral, and then the result of a mastoid operation. The skin about the depressed site will be found to be more or less firmly adherent, necessitating subcutaneous dissection before an injection for correction can be undertaken. In this case the cold mixture of vaselin and paraffin is indicated, since the softer products will hardly suffice to elevate the tense skin. If the former surgical operation has been done some time previous to the required injection the parts may at one or two sittings be restored to a fairly normal contour, depending entirely upon the amount of ungiving scar tissue at the site. If the parts are tender and not reduced to normal, the injections should be made frequently, about ten days apart, injecting a small mass across and through the subcutaneous scar attachment at each sitting. The reactions following such injections help to tease the scar away from the bony tissue, but should not be sufficient to cause extensive inflammation. The same mode of post-operative treatment as has been given with pro-auricular corrections should be followed. SPECIFIC TECHNIQUE FOR THE CORRECTION OF DEFORMITIES ABOUT THE SHOULDERS