While it is true excellent results may be obtained with hard paraffin, used in liquefied form, it can often be shown, however, that the paraffin injected under pressure will run down in narrow, pencil-like streams underneath the chin and skin of the anterior aspect of the neck, where they may be felt afterward as hard oval cysts or of elongated form. This is not possible when the cold mixture of vaselin and paraffin is used, since the position of the mass can be easily followed with the eye or felt with the fingers. The injections should be made from either angle at the first sitting. Enough of the mass should be introduced to leave a ridgelike formation across the anterior chin, varying in thickness according to the shape of the chin previous to operation and the form desired. It is not well in chins of very deficient type to attempt to make the anterior contour as it should be in the first sitting. Too much pressure would be required, and unless the skin was freely movable considerable reactive inflammation would result, with possible necrosis of the skin in part and consequent expulsion of the injected mass. The anterior line of such chins should be rebuilt in several sittings, always waiting for the parts to become normal in appearance and sensitiveness. This method helps to stretch the skin, allowing of further injections and the introductions of a greater quantity than could be introduced at one time only. The author advocates making two or three sittings of the anterior restoration of contour and two for each angle. The angles of the chin are injected at a point about midway between the mental process and beginning of external oblique line. The mass is injected as near the inferior ridge as possible, and somewhat above the attachment of the platysma myoides muscle. [Illustration: FIG. 304. FIG. 305. FRONTAL VIEW, SHOWING CORRECTION OF ANTERO-LATERAL DEFICIENCY ABOUT CHIN; ALSO CORRECTION OF DEFICIENCY OF CHEEKS.] Only one needle insertion is made at each angle, and the mass is injected until a round elevated tumor is attained, which is pinched or squeezed with the fingers into the desired angular form, one finger being placed over the needle opening to avoid squeezing the mass out. It can be readily seen that with this puttylike mass much better results than with the comparatively soft vaselin could be obtained while with the liquefied paraffin the operator would be at a loss to know just what had been accomplished until the mass had become fairly solidified, and then often finding the semisolid mass, which required rapid molding to give the desired shape before it would become hard and unmanageable, in a different position and much more distributed than he had expected.